A wear-resistant mine scraper flight assembly

Abstract

The present application belongs to the technical field of material conveying, and proposes a wear-resistant mine scraper trough assembly, which comprises a trough body and a scraper body. The trough body comprises an upper trough and a lower trough. The scraper body comprises a first scraper and a second scraper. The first scraper is located in the upper trough, and the second scraper is located in the lower trough. A first wear-resistant assembly is arranged between the first scraper and the upper trough, and a second wear-resistant assembly is arranged between the second scraper and the lower trough. The present application changes the use principle of the original trough, changes the wear position of the trough and the scraper, and reconstructs the fixed wear position of the original trough into a detachable wear-resistant assembly, so that the wear is concentrated on the replaceable wear-resistant assembly. When the wear-resistant assembly is worn out, only partial replacement is needed, avoiding the scrapping of the main structure of the trough due to wear, thereby improving the overall service life of the trough.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material conveying, in particular to a wear-resistant mine scraper chute assembly. BACKGROUND

[0002] In the past, the standard for identifying whether the chute is usable is the wear condition of the contact position between the chute and the horn of the scraper. When the original chute is in use, the horns at both ends of the scraper rub against the walking cavities at both ends of the chute. In the long-term use process, the horns at both ends of the chute and the scraper will be severely worn, which will cause the geometric size of the chute at both ends to exceed the use size, and further cause the scraper to be squeezed out of the chute during high-speed operation, thereby causing a major accident. Moreover, after the wear of the walking cavities at both ends of the chute, it is difficult to repair, and usually only scrap processing can be done. SUMMARY

[0003] The purpose of the present application is to solve at least one of the above technical defects.

[0004] To this end, one object of the present application is to provide a wear-resistant mine scraper chute assembly to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides a wear-resistant mine scraper chute assembly, comprising: a chute body and a scraper body, the chute body comprising an upper chute and a lower chute, the scraper body comprising a first scraper and a second scraper, the first scraper being located in the upper chute, the second scraper being located in the lower chute, a first wear-resistant assembly being provided between the first scraper and the upper chute, and a second wear-resistant assembly being provided between the second scraper and the lower chute.

[0006] Preferably, the first wear-resistant assembly comprises a C-shaped wear-resistant strip, a convex wear-resistant strip and a first right-angle wear-resistant block, the C-shaped wear-resistant strip being sleeved on the upper edge of the side profile of the upper chute and being installed and fixed by a first pin shaft, the convex wear-resistant strip being embedded in the bottom groove of the upper chute, and the first right-angle wear-resistant block being installed on the upper end of the horn of the first scraper by a second pin shaft.

[0007] Preferably, the bottom of the first scraper is provided with a first installation groove, a first rotating wheel is rotatably installed in the first installation groove, the wheel surface of the first rotating wheel comprises a first wheel surface and a second wheel surface, the first wheel surface and the second wheel surface have a certain height difference, and the upper surface of the convex wear-resistant strip comprises a high surface and a low surface.

[0008] When the first scraper moves in the upper chute, the first wheel surface contacts the high surface, and the second wheel surface contacts the low surface.

[0009] The upper surface of the horn of the first scraper is provided with a second mounting groove, and a second rotating wheel is rotatably mounted in the second mounting groove.

[0010] When the first scraper moves in the upper groove, the wheel surface of the second rotating wheel is in contact with the C-shaped wear-resistant strip, and the first right-angle wear-resistant block is in contact with the C-shaped wear-resistant strip.

[0011] Preferably, the second wear-resistant assembly comprises a second right-angle wear-resistant block and an obtuse-angle wear-resistant strip, the second right-angle wear-resistant block is mounted at the upper end of the horn of the first scraper through a third pin shaft, and the obtuse-angle wear-resistant strip is laid at the connection between the side profile of the lower groove and the bottom surface of the lower groove.

[0012] Preferably, the structure of the second scraper is the same as that of the first scraper, the first scraper is placed in the upper groove, and the second scraper is placed upside down in the lower groove, when the second scraper moves in the lower groove, the wheel surface of the second rotating wheel of the second scraper is in contact with the obtuse-angle wear-resistant strip, and the second right-angle wear-resistant block is in contact with the obtuse-angle wear-resistant strip.

[0013] Preferably, a plurality of linear wear-resistant strips are further included, and the plurality of linear wear-resistant strips are laid on the bottom surface of the upper groove and the bottom surface of the lower groove.

[0014] Preferably, one end of the bottom surface of the upper groove is provided with a connecting block, and the other end of the bottom surface of the upper groove is provided with a connecting groove, when a plurality of chutes are laid, the connecting block of a previous chute is embedded into the connecting groove of a next chute, so as to realize the assembly connection of the plurality of chutes.

[0015] Preferably, wear lines are arranged on the first wear-resistant assembly and the second wear-resistant assembly, during the use of the scraper chute assembly, the wear degree of the first wear-resistant assembly and the second wear-resistant assembly is determined according to the wear lines, and the first wear-resistant assembly and the second wear-resistant assembly are replaced according to the wear degree.

[0016] Preferably, the material of the first wear-resistant assembly and the second wear-resistant assembly comprises, by weight percentage, C: 0.5-0.55%, Si: 0.6-0.8%, Cr: 7.2-8.1%, Mo: 0.7-0.8%, W: 0.5-0.6%, and the balance is iron.

[0017] Preferably, the material of the first pin shaft, the second pin shaft and the third pin shaft comprises, by weight percentage, C: 0.37-0.44%, Si: 0.17-0.37%, Mn: 0.50-0.80%, Cr: 0.60-0.90%, Ni: 1.25-1.65%, and the balance is iron.

[0018] Compared with the prior art, the application has the advantages and beneficial effects that:

[0019] The application changes the use principle of the original chute, changes the wear position of the chute and the scraper, and concentrates the wear on the replaceable wear assembly by reconstructing the fixed wear position (the walking cavity / upper groove and lower groove at both ends) of the original chute into a detachable wear assembly. Only partial replacement is needed when the wear assembly is worn out, avoiding the scrapping of the main structure of the chute due to wear, thereby prolonging the overall service life of the chute.

[0020] The wear assembly of the application is small in size and convenient to replace, is fixed by using a special pin shaft, and has a much shorter maintenance and replacement time than the overall chute replacement. Enterprises do not need to frequently purchase large spare parts, but only need to store wear strips, thereby saving spare part costs and reducing production capacity loss caused by equipment downtime.

[0021] The geometric dimension of the original chute and the scraper will be out of tolerance after wear, which will cause the scraper to derail during high-speed operation and may cause a major accident. The application transfers the wear to the controllable wear assembly, ensures the integrity of the main structure of the chute and the scraper, and fundamentally avoids the risk of the scraper being squeezed out of the chute.

[0022] The wear assembly of the application is made of high-chromium alloy and has super wear resistance and impact resistance; the pin shaft contains nickel-chromium alloy to provide high toughness, and the double-material upgrade ensures the stability of the assembly under extreme working conditions.

[0023] The scraper chute assembly of the application can reduce the overall scrappage rate of the chute, reduce the consumption of steel resources, simplify the supply chain (only small wear spare parts are needed), reduce carbon emissions during transportation, and meet the green mine construction goal.

[0024] The additional aspects and advantages of the application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the application will become apparent and easy to understand from the description of the embodiments combined with the following drawings, in which:

[0026] Figure 1 It is an isometric view of the prior art chute;

[0027] Figure 2 It is a front view of the prior art chute;

[0028] Figure 3 It is a front view of the prior art scraper;

[0029] Figure 4 It is an isometric side view of the scraper chute assembly of the embodiment of the application;

[0030] Figure 5 Front view of the scraper trough assembly of an embodiment of the present application;

[0031] Figure 6 Front view of the scraper trough assembly of an embodiment of the present application; Figure 5 Enlarged view of the middle I;

[0032] Figure 7 Isometric side view of the scraper trough assembly of an embodiment of the present application with the scraper hidden;

[0033] Figure 8 Front view of the scraper trough assembly of an embodiment of the present application with the scraper hidden;

[0034] Figure 9 Isometric side view of the scraper of an embodiment of the present application;

[0035] Figure 10 Front view of the scraper of an embodiment of the present application;

[0036] Figure 11 Wear line diagram of an embodiment of the present application.

[0037] In the figure: 1, trough body; 2, upper trough; 3, lower trough; 4, first scraper; 5, second scraper; 6, C-shaped wear-resistant strip; 7, convex wear-resistant strip; 8, first right-angle wear-resistant block; 9, side profile of the upper trough; 10, upper edge position; 11, first pin shaft; 12, bottom surface of the upper trough; 13, groove; 14, second pin shaft; 15, upper end of the horn; 16, first rotating wheel; 17, first wheel surface; 18, second wheel surface; 19, high surface; 20, low surface; 21, second rotating wheel; 22, second right-angle wear-resistant block; 23, obtuse-angle wear-resistant strip; 24, side profile of the lower trough; 25, bottom surface of the lower trough; 26, straight-line wear-resistant strip; 27, connecting block; 28, connecting groove; 29, wear line. DETAILED DESCRIPTION

[0038] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals are used throughout to designate the same or similar elements or elements having the same or similar functions. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and are not to be understood as limiting the present application.

[0039] As Figure 1 , Figure 2 and Figure 3As shown, the original chute design scraper E position (horn) in the running process wear chute B, C position (both ends of the walking cavity), in the long-term use process after wear B, C position of the chute, the chute can not be used normally, the repair difficulty is bigger here, the chute can only be scrapped. The application changes the use principle of the original chute, changes the wear position of the chute, changes the original wear position B, C of the chute to the present A, D position, changes the original wear position E of the scraper to the present F position, designs a replaceable wear assembly on the new wear position, so that the chute is protected to a certain extent, and the service life is prolonged.

[0040] Based on this, the application provides a wear-resistant mine scraper chute assembly, as shown in Figures 4-11 As shown, comprising: a chute body 1 and a scraper body, the chute body 1 comprises an upper chute 2 and a lower chute 3, the scraper body comprises a first scraper 4 and a second scraper 5, the first scraper 4 is located in the upper chute 2, the second scraper 5 is located in the lower chute 3, the first scraper 4 and the upper chute 2 are provided with a first wear-resistant assembly, and the second scraper 5 and the lower chute 3 are provided with a second wear-resistant assembly.

[0041] The application changes the use principle of the original chute, changes the wear position of the chute and the scraper, and reconstructs the fixed wear part (both ends of the walking cavity / upper chute 2 and lower chute 3) of the original chute into a detachable wear-resistant assembly, so that the wear is concentrated on the replaceable wear-resistant assembly. When the wear-resistant assembly is worn out, only partial replacement is needed, avoiding the wear-out of the main structure of the chute, so that the overall service life of the chute is improved.

[0042] The original chute and the scraper wear after the geometric size is out of tolerance, which will cause the scraper to derail when running at high speed, which may cause a major accident. The application transfers the wear to the controllable wear-resistant assembly, ensures the integrity of the main structure of the chute and the scraper, and fundamentally avoids the risk of the scraper extruding out of the chute.

[0043] Further, the first wear-resistant assembly comprises a C-shaped wear-resistant strip 6, a convex wear-resistant strip 7 and a first right-angle wear-resistant block 8, the C-shaped wear-resistant strip 6 is sleeved on the upper edge position 10 of the side profile 9 of the upper chute and is installed and fixed by a first pin shaft 11, the convex wear-resistant strip 7 is embedded in the groove 13 of the bottom surface 12 of the upper chute, and the first right-angle wear-resistant block 8 is installed at the upper end 15 of the horn of the first scraper 4 by a second pin shaft 14.

[0044] As shown in Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the C-shaped wear-resistant strip 6, the convex wear-resistant strip 7 and the first right-angle wear-resistant block 8 each have two.

[0045] It is understandable that when the wear-resistant components are installed and fixed by the pin, the corresponding wear-resistant block or wear-resistant strip is provided with a pin hole. On the chute or scraper, there is also a mounting hole at the position where the corresponding wear-resistant block or wear-resistant strip is installed. The mounting hole and the pin hole correspond to each other, and the installation and fixing are achieved by the pin.

[0046] Furthermore, the bottom of the first scraper 4 is provided with a first mounting groove, in which a first rotating wheel 16 is rotatably mounted. The wheel surface of the first rotating wheel 16 includes a first wheel surface 17 and a second wheel surface 18. There is a certain height difference between the first wheel surface 17 and the second wheel surface 18. The upper surface of the convex wear-resistant strip 7 includes a high surface 19 and a low surface 20.

[0047] When the first scraper 4 moves within the upper groove 2, the first wheel surface 17 contacts the high surface 19, and the second wheel surface 18 contacts the low surface 20.

[0048] The upper surface of the first scraper 4 at the horn is provided with a second mounting groove, and a second rotating wheel 21 is rotatably mounted in the second mounting groove;

[0049] When the first scraper 4 moves within the upper groove 2, the wheel surface of the second rotating wheel 21 contacts the C-shaped wear-resistant strip 6, and the first right-angle wear-resistant block 8 contacts the C-shaped wear-resistant strip 6.

[0050] It is understandable that the first scraper 4 and the second scraper 5 can move longitudinally within the upper trough 2 and lower trough 3 of the chute (i.e., Figure 4 The first scraper 4 and the second scraper 5 move along the X-axis direction (as shown in the figure). The first scraper 4 and the second scraper 5 are connected to the chain (not shown in the figure). The chain is driven by the drive device to move along the longitudinal direction of the upper groove 2 and the lower groove 3 (i.e., Figure 4 The movement (in the X-axis direction shown) drives the first scraper 4 and the second scraper 5 to move.

[0051] It is understandable that the first scraper 4 and the second scraper 5 have the same structure. The difference is that the first scraper 4 is placed upright in the upper groove 2 of the chute and moves along the X+ direction under the drive of the chain, while the second scraper 5 is placed upside down in the lower groove 3 of the chute and moves along the X- direction under the drive of the chain. That is, the movement directions of the first scraper 4 and the second scraper 5 are opposite / relative.

[0052] like Figures 4-8As shown, when the first scraper 4 moves in the upper chute 2 of the chute, the first runner 16 on the first scraper 4 is in contact with the convex wear-resistant strip 7 on the bottom surface 12 of the upper chute, more specifically, the first wheel surface 17 of the first runner 16 is in contact with the high surface 19 of the convex wear-resistant strip 7, and the second wheel surface 18 of the first runner 16 is in contact with the low surface 20 of the convex wear-resistant strip 7. On the one hand, the bottom of the first scraper 4 is not in direct contact with the bottom surface 12 of the upper chute, but is in contact with the convex wear-resistant strip 7 through the first runner 16, so that during the movement of the scraper, neither the scraper body nor the chute body 1 is worn, but the first runner 16 and the convex wear-resistant strip 7 are worn, which can be replaced after a certain degree of wear. On the other hand, the design of the first wheel surface 17 and the second wheel surface 18 of the first runner 16 cooperates with the high surface 19 and the low surface 20 of the convex wear-resistant strip 7, which can limit the micro-motion or wobble of the first scraper 4 in the upper chute 2 in the transverse direction (i.e. the Y-axis direction) to a certain extent, and can also prevent the first scraper 4 from being squeezed out of the chute due to excessive micro-motion or wobble in the transverse direction (i.e. the Y-axis direction) in the upper chute 2. Figure 4 Figure 4 As shown, when the first scraper 4 moves in the upper chute 2 of the chute, the first runner 16 on the first scraper 4 is in contact with the convex wear-resistant strip 7 on the bottom surface 12 of the upper chute, more specifically, the first wheel surface 17 of the first runner 16 is in contact with the high surface 19 of the convex wear-resistant strip 7, and the second wheel surface 18 of the first runner 16 is in contact with the low surface 20 of the convex wear-resistant strip 7. On the one hand, the bottom of the first scraper 4 is not in direct contact with the bottom surface 12 of the upper chute, but is in contact with the convex wear-resistant strip 7 through the first runner 16, so that during the movement of the scraper, neither the scraper body nor the chute body 1 is worn, but the first runner 16 and the convex wear-resistant strip 7 are worn, which can be replaced after a certain degree of wear. On the other hand, the design of the first wheel surface 17 and the second wheel surface 18 of the first runner 16 cooperates with the high surface 19 and the low surface 20 of the convex wear-resistant strip 7, which can limit the micro-motion or wobble of the first scraper 4 in the upper chute 2 in the transverse direction (i.e. the Y-axis direction) to a certain extent, and can also prevent the first scraper 4 from being squeezed out of the chute due to excessive micro-motion or wobble in the transverse direction (i.e. the Y-axis direction) in the upper chute 2.

[0053] As shown, when the first scraper 4 moves in the upper chute 2 of the chute, the first runner 16 on the first scraper 4 is in contact with the convex wear-resistant strip 7 on the bottom surface 12 of the upper chute, more specifically, the first wheel surface 17 of the first runner 16 is in contact with the high surface 19 of the convex wear-resistant strip 7, and the second wheel surface 18 of the first runner 16 is in contact with the low surface 20 of the convex wear-resistant strip 7. On the one hand, the bottom of the first scraper 4 is not in direct contact with the bottom surface 12 of the upper chute, but is in contact with the convex wear-resistant strip 7 through the first runner 16, so that during the movement of the scraper, neither the scraper body nor the chute body 1 is worn, but the first runner 16 and the convex wear-resistant strip 7 are worn, which can be replaced after a certain degree of wear. On the other hand, the design of the first wheel surface 17 and the second wheel surface 18 of the first runner 16 cooperates with the high surface 19 and the low surface 20 of the convex wear-resistant strip 7, which can limit the micro-motion or wobble of the first scraper 4 in the upper chute 2 in the transverse direction (i.e. the Y-axis direction) to a certain extent, and can also prevent the first scraper 4 from being squeezed out of the chute due to excessive micro-motion or wobble in the transverse direction (i.e. the Y-axis direction) in the upper chute 2. Figure 4 Figure 4 As shown, when the first scraper 4 moves in the upper chute 2 of the chute, the first runner 16 on the first scraper 4 is in contact with the convex wear-resistant strip 7 on the bottom surface 12 of the upper chute, more specifically, the first wheel surface 17 of the first runner 16 is in contact with the high surface 19 of the convex wear-resistant strip 7, and the second wheel surface 18 of the first runner 16 is in contact with the low surface 20 of the convex wear-resistant strip 7. On the one hand, the bottom of the first scraper 4 is not in direct contact with the bottom surface 12 of the upper chute, but is in contact with the convex wear-resistant strip 7 through the first runner 16, so that during the movement of the scraper, neither the scraper body nor the chute body 1 is worn, but the first runner 16 and the convex wear-resistant strip 7 are worn, which can be replaced after a certain degree of wear. On the other hand, the design of the first wheel surface 17 and the second wheel surface 18 of the first runner 16 cooperates with the high surface 19 and the low surface 20 of the convex wear-resistant strip 7, which can limit the micro-motion or wobble of the first scraper 4 in the upper chute 2 in the transverse direction (i.e. the Y-axis direction) to a certain extent, and can also prevent the first scraper 4 from being squeezed out of the chute due to excessive micro-motion or wobble in the transverse direction (i.e. the Y-axis direction) in the upper chute 2.

[0054] Further, the second wear-resistant assembly includes a second right-angle wear-resistant block 22 and an obtuse-angle wear-resistant strip 23, the second right-angle wear-resistant block 22 is installed on the upper end 15 of the horn of the first scraper 4 through a third pin shaft, and the obtuse-angle wear-resistant strip 23 is laid at the connection between the side profile 24 of the lower chute and the bottom surface 25 of the lower chute.

[0055] It can be understood that the obtuse-angle wear-resistant strip 23 can be fixed by a pin shaft, or a groove 13 can be provided at the connection between the side profile 24 of the lower chute and the bottom surface 25 of the lower chute, and the obtuse-angle wear-resistant strip 23 is embedded in the groove 13 for fixation.

[0056] ​​Further, the structure of the second scraper 5 is the same as that of the first scraper 4, the first scraper 4 is placed in the upper groove 2, and the second scraper 5 is placed upside down in the lower groove 3, when the second scraper 5 moves in the lower groove 3, the wheel surface of the second rotating wheel 21 of the second scraper 5 is in contact with the obtuse-angle wear-resistant strip 23, and the second right-angle wear-resistant block 22 is in contact with the obtuse-angle wear-resistant strip 23.

[0057] As shown in Figures 4-8 Fig. 2, when the second scraper 5 moves in the lower groove 3 of the chute in the longitudinal direction (i.e. the X-axis direction shown in Figure 4 Fig. 2), the second rotating wheel 21 on the second scraper 5 is in contact with the obtuse-angle wear-resistant strip 23 at the joint between the side profile 24 of the lower groove and the bottom surface 25 of the lower groove, so that the scraper body and the chute body 1 are not worn during the movement of the scraper, and the second rotating wheel 21 and the obtuse-angle wear-resistant strip 23 are worn, which can be replaced when worn to a certain extent.

[0058] It can be understood that when the second scraper 5 moves in the lower groove 3 of the chute in the longitudinal direction (i.e. the X-axis direction shown in Figure 4 Fig. 2), the second scraper 5 also produces micro-movement or shaking in the transverse direction (i.e. the Y-axis direction shown in Figure 4 Fig. 2) in the lower groove 3, at this time, the second right-angle wear-resistant block 22 on the second scraper 5 is in contact with the obtuse-angle wear-resistant strip 23 at the joint between the side profile 24 of the lower groove and the bottom surface 25 of the lower groove, thereby causing wear and loss, and the scraper body and the chute body 1 are not in contact and are not worn, and the second right-angle wear-resistant block 22 and the obtuse-angle wear-resistant strip 23 can be replaced when worn to a certain extent.

[0059] The present application changes the use principle of the original chute, changes the wear position of the chute and the scraper, and reconfigures the fixed wear parts (walking cavities / upper grooves 2 and lower grooves 3 at both ends) of the original chute into detachable wear-resistant assemblies, so that the wear is concentrated on the replaceable wear-resistant assemblies. When the wear-resistant assemblies are worn, only partial replacement is required, avoiding the scrapping of the chute body structure due to wear, thereby prolonging the overall service life of the chute.

[0060] The scraper chute assembly of the present application can reduce the overall scrapping rate of the chute, reduce the consumption of steel resources, simplify the supply chain (only small-sized wear-resistant spare parts are required), reduce carbon emissions during transportation, and meet the green mine construction goal.

[0061] It can be understood that the wear-resistant components of the present application, including C-shaped wear-resistant strips 6, convex wear-resistant strips 7, right-angle wear-resistant blocks, obtuse-angle wear-resistant strips 23, etc., are named according to the shapes shown in the drawings, but the shapes of the wear-resistant strips and wear-resistant blocks of the present application are not limited thereto, and any shape of the wear-resistant components that can reconstruct the fixed wear parts (both ends of the walking cavity / upper groove 2 and lower groove 3) of the original chute into detachable wear-resistant components so that the wear is concentrated on the replaceable wear-resistant components is within the protection scope of the present application.

[0062] It can be understood that the design of the first rotating wheel 16 and the second rotating wheel 21 can also reduce the friction when the scraper moves on the chute (in the walking cavity / upper groove 2 and lower groove 3), so that it is easier and less laborious for the chain to drive the scraper to move.

[0063] Further, a plurality of linear wear-resistant strips 26 are arranged on the bottom surface 12 of the upper groove and the bottom surface 25 of the lower groove.

[0064] It can be understood that the positions of the linear wear-resistant strips 26 correspond to the positions of the chain, and when the chain drives the scraper to move, the chain does not directly contact the bottom surface 12 of the upper groove and the bottom surface 25 of the lower groove, further avoiding the wear and tear of the chute and improving the service life of the chute.

[0065] Further, as shown in Figure 7 the bottom surface 12 of the upper groove is provided with a connecting block 27 at one end and a connecting groove 28 at the other end, and when a plurality of chutes are laid, the connecting block 27 of the previous chute is embedded into the connecting groove 28 of the next chute, realizing the assembly connection of the plurality of chutes.

[0066] The existing chute has smooth planes on both sides, and when a plurality of chutes are butt-jointed and assembled, only the end of the previous chute is aligned with the other end of the next chute, and there is no limiting structure. The connecting groove 28 and the connecting block 27 are arranged to facilitate the alignment operation when a plurality of chutes are butt-jointed and assembled, and also enhance the stability and firmness of the connection of the adjacent two chutes.

[0067] As an embodiment, the size of the connecting block 27 is slightly smaller than the size of the connecting groove 28. This makes the chute transportation line formed by the assembly of a plurality of chutes not only linear, but also arc-shaped with a certain arc (smaller arc) or arched with a certain arc (smaller arc), so as to adapt to the laying of the chute transportation line in different terrain transportation sites.

[0068] Furthermore, the first wear-resistant component and the second wear-resistant component are provided with wear lines 29. During the use of the scraper chute assembly, the wear degree of the first wear-resistant component and the second wear-resistant component is determined according to the wear lines 29, and the first wear-resistant component and the second wear-resistant component are replaced according to the wear degree.

[0069] like Figure 11 As shown, taking the C-shaped wear-resistant strip 6 as an example, wear lines 29 are set on the C-shaped wear-resistant strip 6. During the use of the scraper chute assembly, the wear-resistant components are constantly worn. The wear degree of the C-shaped wear-resistant strip 6 can be determined by the distance between the wear line 29 and the edge of the C-shaped wear-resistant strip 6. When the wear line 29 of the C-shaped wear-resistant strip 6 disappears or partially disappears, it can be determined that the wear degree of the C-shaped wear-resistant strip 6 is large and has reached the replacement condition, so it should be replaced in time.

[0070] It is understandable that wear lines 29 can be set on each component of the wear-resistant assembly to monitor the wear of the wear lines 29 on the C-shaped wear-resistant strip 6, convex wear-resistant strip 7, first right-angle wear-resistant block 8, second right-angle wear-resistant block 22, and obtuse-angle wear-resistant strip 23, and replace them individually; or wear lines 29 can be set only on the C-shaped wear-resistant strip 6, and when the wear lines 29 on the C-shaped wear-resistant strip 6 disappear or partially disappear, all wear-resistant components can be replaced together.

[0071] The above-mentioned method involves setting wear lines 29 to determine the wear degree of wear-resistant components and then replacing them based on the wear degree. This requires manual inspection. In actual applications, there are many chutes on the transport line, and manual inspection is time-consuming and labor-intensive. Furthermore, real-time monitoring is not possible, resulting in a gap period. During this gap period, there is a possibility that the wear degree of the wear components may be too high, causing the scraper to be squeezed out of the chute.

[0072] Therefore, in another embodiment, the present invention also provides a method for real-time monitoring of wear amount of wear-resistant components, comprising:

[0073] Replace the first and second wear-resistant components with new ones. Collect the initial parameters of the scraper chute assembly under no-load operation based on the triaxial vibration sensor and acoustic emission sensor, including the initial amplitude A0, initial characteristic frequency f0 and background sound energy S0 of the chute side profile.

[0074] The system uses triaxial vibration sensors and acoustic emission sensors to collect real-time operating parameters of the scraper chute assembly under load, including the real-time amplitude A of the chute side profile. i Real-time characteristic frequency f i and real-time total sound field energy S i Based on the initial characteristic frequency f0 and the real-time characteristic frequency f i Determine the real-time frequency offset Δf;

[0075] According to the real-time amplitude A i , the initial amplitude A0, the real-time frequency offset Δf and the initial characteristic frequency f0 to determine the first wear index W v ;

[0076] According to the background sound energy S0, the first energy entropy E0 is extracted by wavelet packet decomposition, and according to the real-time total sound field energy S i The second energy entropy E is extracted by wavelet packet decomposition i , according to the first energy entropy E0 and the second energy entropy E i Determine the second wear index W s ;

[0077] According to the first wear index and the second wear index, the multi-source wear index W total , when the multi-source wear index W total is greater than the first preset threshold, the new first wear-resistant component and the second wear-resistant component are replaced.

[0078] When the scraper moves in the upper trough and the lower trough of the chute, the wear-resistant component is continuously worn and consumed, and as the consumption increases, the wear-resistant component gradually thins, and the degree of micro-motion or shaking of the scraper in the transverse direction (i.e. Figure 4 Y-axis direction) becomes larger, and the vibration and sound field energy generated by the collision of the scraper with the chute also increases, therefore, the present application based on the sensor for real-time data acquisition, through the signal fusion of vibration and sound, constructed the wear-resistant component wear amount monitoring and early warning system from data acquisition, wear quantization to intelligent decision, realized the real-time quantitative evaluation and replacement warning of wear state.

[0079] Specifically, the first wear index calculation method is:

[0080]

[0081] Specifically, the second wear index calculation method is:

[0082]

[0083] Specifically, the multi-source wear index calculation method is:

[0084]

[0085] Wherein, W v，max is the maximum value of the first wear index at each historical wear-resistant component replacement; W s，max is the maximum value of the second wear index at each historical wear-resistant component replacement.

[0086] As an implementation form, the triaxial vibration sensor and the acoustic emission sensor are installed on the inner wall or the outer wall of the chute side profile, and one triaxial vibration sensor and one acoustic emission sensor are arranged corresponding to each chute.

[0087] As an implementation form, the collection of the initial amplitude A0, the initial characteristic frequency f0 and the background sound energy S0 is specifically as follows: the scraper chute assembly is operated for 24 hours under no load, and the average value of the data collected by the triaxial vibration sensor and the acoustic emission sensor within 24 hours is calculated as the initial amplitude A0, the initial characteristic frequency f0 and the background sound energy S0.

[0088] As an implementation form, the first preset threshold is 0.6. total When the multi-source wear index W is greater than 0.6, an alarm is given through an alarm device, reminding to replace the new first wear-resistant component and the second wear-resistant component.

[0089] The real-time monitoring method for the wear amount of the wear-resistant component provided in the embodiment realizes real-time quantitative evaluation and replacement warning of the wear state, based on real-time data collection by sensors, through signal fusion of vibration and sound, and construction of a wear-resistant component wear amount monitoring and early warning system from data collection, wear quantification to intelligent decision-making.

[0090] Further, the material of the first wear-resistant component and the second wear-resistant component is composed of the following components in percentage by weight: C: 0.5-0.55%, Si: 0.6-0.8%, Cr: 7.2-8.1%, Mo: 0.7-0.8%, W: 0.5-0.6%, and the balance is iron.

[0091] Further, the material of the first pin shaft 11, the second pin shaft 14 and the third pin shaft is composed of the following components in percentage by weight: C: 0.37-0.44%, Si: 0.17-0.37%, Mn: 0.50-0.80%, Cr: 0.60-0.90%, Ni: 1.25-1.65%, and the balance is iron.

[0092] The wear-resistant component of the application adopts high-chromium alloy, has super wear resistance and impact resistance; the pin shaft contains nickel-chromium alloy to provide high toughness, and the double-material upgrade ensures the stability of the component under extreme working conditions.

[0093] The wear-resistant component of the application has small volume and is convenient to replace, is fixed by using a special pin shaft, and the time consumption for maintenance and replacement is much lower than that of the whole chute replacement. Enterprises do not need to frequently purchase large spare parts, but only need to store wear-resistant strips, thereby saving spare part costs and reducing production capacity loss caused by equipment downtime.

[0094] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0095] It is obvious for those skilled in the art that the present application includes any combination of the parts shown in the summary and detailed description of the application and the drawings, and each scheme formed by the combination is not described one by one due to the limited space and the simplicity of the specification. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0096] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments without departing from the principles and spirit of the present application within the scope of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A wear resistant mining flight assembly comprising a flight body and a flight body, characterised in that, The chute body comprises an upper chute and a lower chute, the scraper body comprises a first scraper and a second scraper, the first scraper is located in the upper chute, the second scraper is located in the lower chute, a first wear-resistant component is arranged between the first scraper and the upper chute, and a second wear-resistant component is arranged between the second scraper and the lower chute; The first wear-resistant component comprises a C-shaped wear-resistant strip, a convex wear-resistant strip and a first right-angle wear-resistant block, the C-shaped wear-resistant strip is sleeved on the upper edge of the side profile of the upper chute and is fixed by a first pin shaft, the convex wear-resistant strip is embedded in the bottom groove of the upper chute, and the first right-angle wear-resistant block is installed on the upper end of the horn of the first scraper by a second pin shaft; The bottom of the first scraper is provided with a first installation groove, a first rotating wheel is rotatably installed in the first installation groove, the wheel surface of the first rotating wheel comprises a first wheel surface and a second wheel surface, and the first wheel surface and the second wheel surface have a certain height difference, and the upper surface of the convex wear-resistant strip comprises a high surface and a low surface; When the first scraper moves in the upper chute, the first wheel surface is in contact with the high surface, and the second wheel surface is in contact with the low surface; The upper surface of the horn of the first scraper is provided with a second installation groove, and a second rotating wheel is rotatably installed in the second installation groove; When the first scraper moves in the upper chute, the wheel surface of the second rotating wheel is in contact with the C-shaped wear-resistant strip, and the first right-angle wear-resistant block is in contact with the C-shaped wear-resistant strip; The second wear-resistant component comprises a second right-angle wear-resistant block and an obtuse-angle wear-resistant strip, the second right-angle wear-resistant block is installed on the upper end of the horn of the first scraper by a third pin shaft, and the obtuse-angle wear-resistant strip is laid at the connection between the side profile of the lower chute and the bottom of the lower chute; The structure of the second scraper is the same as that of the first scraper, the first scraper is placed in the upper chute, the second scraper is placed upside down in the lower chute, when the second scraper moves in the lower chute, the wheel surface of the second rotating wheel of the second scraper is in contact with the obtuse-angle wear-resistant strip, and the second right-angle wear-resistant block is in contact with the obtuse-angle wear-resistant strip; Also include monitoring system, based on three-axis vibration sensor and acoustic emission sensor acquisition scraper chute assembly when the initial parameters of no load operation, including the initial amplitude of the chute side profile , initial characteristic frequency And background acoustic energy ; Based on the triaxial vibration sensor and acoustic emission sensor, the running parameters of the scraper chute assembly during the load operation are collected in real time, including the real-time amplitude of the chute side profile , real-time characteristic frequency and real-time total sound field energy , the real-time frequency offset is determined according to the initial characteristic frequency and the real-time characteristic frequency ; Based on real-time amplitude Initial amplitude Real-time frequency offset and initial characteristic frequency Determine the first wear index ; According to background sound energy Extracting a first energy entropy by wavelet packet decomposition According to real-time total sound field energy Extracting a second energy entropy by wavelet packet decomposition Determining a second wear index according to the first energy entropy and the second energy entropy ;​ Determining a multi-source wear index from a first wear index and a second wear index When the multi-source wear index replacing the new first wear-resistant component and the second wear-resistant component.

2. The abrasion-resistant mining flight bar assembly of claim 1, wherein, A plurality of linear wear-resistant strips are further arranged, and the plurality of linear wear-resistant strips are laid on the bottom of the upper chute and the bottom of the lower chute.

3. The wear resistant mining flight bar assembly of claim 2, wherein, One end of the bottom of the upper chute is provided with a connecting block, the other end of the bottom of the upper chute is provided with a connecting groove, when a plurality of chutes are laid, the connecting block of a previous chute is embedded into the connecting groove of a next chute, and the assembly and connection of the plurality of chutes are realized.

4. The abrasion-resistant mining flight bar assembly of claim 1, wherein, Wear lines are arranged on the first wear-resistant component and the second wear-resistant component, the wear degrees of the first wear-resistant component and the second wear-resistant component are determined according to the wear lines in the use process of the scraper chute assembly, and the first wear-resistant component and the second wear-resistant component are replaced according to the wear degrees.

5. The abrasion-resistant mining flight bar assembly of claim 1, wherein, The material of the first wear-resistant component and the second wear-resistant component comprises the following components in percentage by weight: C: 0.5-0.55%, Si: 0.6-0.8%, Cr: 7.2-8.1%, Mo: 0.7-0.8%, W: 0.5-0.6%, and the balance is iron.

6. The abrasion-resistant mining flight bar assembly of claim 1, wherein, The first pin shaft, the second pin shaft and the third pin shaft are made of a material with a composition by weight percentage of C: 0.37-0.44%, Si: 0.17-0.37%, Mn: 0.50-0.80%, Cr: 0.60-0.90%, Ni: 1.25-1.65%, and the balance of iron.

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