Extra-heavy composite secondary buffer bed

Abstract

The utility model discloses an extra-heavy composite secondary buffer bed which comprises a cross beam frame, two groups of buffer supporting components, two groups of bent supporting frames and buffer sliding strips, and the two groups of buffer supporting components are symmetrically arranged at the two ends of the cross beam frame; at least two positioning assemblies are symmetrically arranged on the cross beam frame, the two bent supporting frames are symmetrically installed on the cross beam frame through the two positioning assemblies in a drawing mode, and the inner sides of the top faces of the two bent supporting frames form a groove bottom face. The buffering sliding strip is longitudinally installed on the top face of the bending supporting frame through a long-strip-shaped bending plate. According to the technical scheme, the bending supporting frames which are symmetrically installed are matched with the cross beam frame, the left bending supporting frame and the right bending supporting frame which are connected with the whole buffering sliding strip can be pulled out towards the left side and the right side of the cross beam frame in the transverse direction respectively, and pulling adjustable modular installation is achieved; installation and transportation are convenient, installation, maintenance and replacement of the buffering sliding strips are also convenient, time and labor are saved, and convenience and rapidness are achieved; and each component is in independent modular design, so that the product maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of buffer beds, in particular to an ultra-heavy composite secondary buffer bed. Background Art

[0002] During the material conveying process on the conveyor belt, at the transfer point of the process flow, due to the height difference between the upper and lower joints, the falling materials will form a strong impact force on the conveyor belt due to the acceleration of gravity. Since the traditional ordinary supporting rollers do not have the ability to absorb the impact of the falling materials on the conveyor belt, it is very easy to cause impact damage to the conveyor belt, and the rubber of the conveyor belt will be damaged and scratched. If the material is stuck between the two rollers, it will cause the conveyor belt to be penetrated and longitudinally torn. The arrangement of the spaced roller frames and the sealing system of the transfer point are wavy, causing material to fly. Under super-heavy load conditions, ordinary buffer rollers and conventional buffer bed products cannot achieve a good buffering effect and cannot absorb the impact of materials, thereby causing abnormal damage to the conveyor belt and shortening the service life of the conveyor belt. Therefore, for material buffering and vibration absorption under high-load and heavy-load conditions, avoiding conveyor belt damage and extending the service life of the conveyor belt are important links in the conveying system.

[0003] Defects and shortcomings of the existing technology:

[0004] With the increasing efficiency requirements of modern bulk material conveying enterprises, the damage to the conveyor belt due to material impact under overload conditions will affect production efficiency and shorten the service life of the conveyor belt. Providing matching buffer system products for such working conditions is a prerequisite for normal production operations. The commonly used transfer point buffer product structures on the market are as follows:

[0005] 1. Ordinary supporting rollers: Because they do not have the ability to absorb the impact of falling materials on the conveyor belt, when the material impacts, the supporting frame is frequently impacted by the material and is easily deformed, and the upright support seat of the supporting roller is easy to scratch or tear the belt. The rotating bearing of the supporting roller is impacted for a long time, and the bearing and seal are prone to failure, causing the roller body to rotate inflexibly or not, and wearing the belt surface. The surface of the supporting roller is inelastic, and the surface is prone to adhesion of materials and wear of the belt after long-term operation. In severe cases, it will cause the belt to deviate.

[0006] 2. Ordinary buffer rollers: The buffer structure of the roller support is a rubber ring bonded to the roller. The buffer effect is poor, the impact absorption is poor, and the support roller is easy to be damaged. The rubber ring is easy to fall off when subjected to a large impact. The support buffer roller is in line contact with the conveyor belt, and the conveyor belt between the two rollers is suspended. It is easy for materials or other sharp hard objects to penetrate the conveyor belt between the two rollers and get stuck between the roller and the blanking port, causing the belt to tear longitudinally. The buffer roller is not fully combined with the skirt rubber, and the belt between the two rollers is easy to sag, causing the belt in the blanking port area to be wavy and the sealing is poor, causing material scattering and environmental pollution.

[0007] 3. Ordinary buffer bed: It is mainly composed of buffer strips and buffer brackets. The buffer bracket plays a supporting role, and the buffer strip plays a buffering role. Because its buffer strip is a sliding part, rubber that absorbs impact force, and a frame vulcanized together through a mold, its vulcanization process is complicated, requiring large-scale vulcanization equipment, and the cost is high. Conventional buffer strips are limited by the vibration absorption mode, and the service life of its sliding part is short, and the rubber has limited impact absorption. Therefore, for ultra-heavy working conditions, ordinary buffer beds are easily bent and deformed. In addition, the buffer strips used in ordinary buffer beds have a short service life and frequent maintenance and high costs for ultra-heavy working conditions with high belt speeds and large loads. Utility Model Content

[0008] The purpose of the utility model is to target various wide bandwidth conveying industries with bandwidth ≥ B1400 such as various metal mines, ports, coal mines, etc. Because the conveyor belt has a large carrying capacity, large material particle size, high drop height and other ultra-heavy working conditions, the conveyor belt cannot absorb the impact force caused by the impact of the material well, which can easily cause damage to the rollers, frequent maintenance and material spillage. A buffer device suitable for ultra-heavy working conditions has been developed, and has the advantages of simple and convenient structure, high reliability and easy maintenance.

[0009] In order to achieve the above-mentioned purpose, the utility model is specifically realized through the following technical solutions:

[0010] An ultra-heavy-duty composite secondary buffer bed comprises a crossbeam frame, a buffer support assembly, two groups of bending support frames and a buffer slide bar. The buffer support assembly consists of two groups, which are symmetrically installed at both ends of the crossbeam frame. At least two groups of positioning assemblies are symmetrically arranged on the crossbeam frame. The two groups of bending support frames are symmetrically installed on the crossbeam frame through two positioning assemblies respectively, and a groove bottom surface is formed on the inner sides of the top surfaces of the two bending support frames. The buffer slide bar is longitudinally installed on the top surface of the bending support frame through a long bending plate.

[0011] Furthermore, a connecting plate is installed at the end of the crossbeam frame, the end of the crossbeam frame is fixed on the inner side of the connecting plate, and the buffer support assembly is fixed on the outer side of the connecting plate.

[0012] Furthermore, the bending support frame includes a bottom groove cross frame and a side wall angle frame which are integrally connected and have obtuse top surfaces. The side wall angle frame is arranged on the outer top surface of the bottom groove cross frame, and the bottom groove cross frame is positioned and connected to the cross beam frame through a positioning assembly.

[0013] Furthermore, the angle between the top surface of the connection between the bottom groove cross frame and the side wall angle frame and the cross beam frame is 3-8°; the angle between the side wall angle frame and the cross beam frame is 28-32°.

[0014] Furthermore, the positioning assembly includes a first positioning member and a first fixing member; a second positioning member corresponding to the first positioning member and a second fixing member corresponding to the first fixing member are arranged on the bending support frame.

[0015] Furthermore, the buffer support assembly includes two rubber springs whose ends are staggered and fixed by a buffer connecting plate, and mounting holes are provided on the top and the bottom of the buffer support assembly.

[0016] Furthermore, a rack fixing hole is provided at the bottom of the buffer support assembly.

[0017] Furthermore, the buffer slide bar includes a support plate and a ceramic buffer bar installed on the support plate; the top surface of the ceramic buffer bar has a columnar ceramic block layer, and the thickness of the columnar ceramic block layer is 15-25 mm.

[0018] Furthermore, an out-of-slot support assembly is arranged on the outer sides of both ends of the crossbeam frame, and the out-of-slot support assembly includes a support beam and an inclined buffer frame installed on the top of the support beam, and the angle between the inclined buffer frame and the crossbeam frame is 32-38°.

[0019] Furthermore, a second buffer slide bar is installed on the inclined buffer frame, and the second buffer slide bar includes a second support plate, a long bending plate and a ceramic buffer strip which are fixedly installed in sequence from bottom to top.

[0020] Furthermore, one end of the long bending plate facing the feeding direction of the conveyor belt has an L-shaped bend, and the front end of the second rubber lining is arranged inside the L-shaped bend. The technical solution of the utility model utilizes the symmetrically installed bending support frame to cooperate with the crossbeam frame, and the left and right bending support frames connecting the entire buffer slide bar can be pulled out to the left and right sides of the crossbeam frame, respectively, to achieve pull-out adjustable modular installation; not only is it convenient to install and transport, but it is also convenient to install, maintain and replace the buffer slide bar, saving time and effort, and being convenient and quick.

[0021] Two sets of buffer support components are assembled at both ends of the beam frame to provide buffering and shock absorption between the beam frame and the fixed frame, which can ensure that the impact of materials on the conveyor belt is fully absorbed under super-heavy load conditions, and the structure is convenient and easy to install. The adjustable structural design of the support components outside the groove on both sides allows the spacing between the buffer strips on both sides and the conveyor belt to be properly adjusted, ensuring high sealing performance between the conveyor belt and the skirt system, and effectively preventing the splashing and scattering of materials on the conveyor belt.

[0022] The buffer bed of the utility model can adjust the length of the ceramic buffer slide bar and the number of module arrangement combinations according to the length required by the customer to meet different length requirements; the ceramic buffer strip uses ceramic columns as a resistant layer to extend its service life, reduce maintenance frequency, and save costs; each component is independently modularized, and low-cost product maintenance can be performed according to the replaced module units, thereby reducing product maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a front structural schematic diagram of the utility model;

[0025] Figure 3 This is a schematic diagram of the installation of the crossbeam frame and the bending support frame in the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the crossbeam frame in the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the bending support frame in the utility model;

[0028] Figure 6 It is a three-dimensional structural schematic diagram of the buffer support assembly in the utility model;

[0029] Figure 7 It is a side structural schematic diagram of the buffer support assembly in the utility model;

[0030] Figure 8 It is a structural schematic diagram of the buffer slide bar in the utility model;

[0031] Fig. 9 This is a schematic diagram of the structure of the outer support assembly of the middle tank of the utility model;

[0032] Fig.10 It is a structural schematic diagram of the second buffer slide bar in the utility model;

[0033] Fig.11 It is a side structural schematic diagram of the second buffer slide bar in the utility model;

[0034] Fig.12 The figure is a schematic diagram of the overall structure of an embodiment of the utility model.

[0035] In the figure, 1-beam frame; 2-buffer support assembly; 21-buffer connecting plate; 22-rubber spring; 23-mounting hole; 3-bending support frame; 31-bottom groove cross frame; 32-side wall angle frame; 33-second positioning member; 34-second fixing member; 4-buffer slide; 41-support plate; 42-ceramic buffer strip; 43-columnar ceramic block layer; 5-positioning assembly; 51-first positioning member; 52-first fixing member; 6-connecting plate; 7-outer groove support assembly; 71-support beam; 72-inclined buffer frame; 8-second buffer slide; 81-second support plate; 82-long bending plate; 83-second ceramic buffer strip. DETAILED DESCRIPTION

[0036] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0037] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0038] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0039] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0041] like Figures 1 to 12As shown, an ultra-heavy-duty composite secondary buffer bed of the utility model comprises a crossbeam frame 1, a buffer support assembly 2, two groups of bending support frames 3 and a buffer slide bar 4. The buffer support assembly 2 consists of two groups, which are symmetrically installed at both ends of the crossbeam frame 1; at least two groups of positioning assemblies 5 are symmetrically arranged on the crossbeam frame 1, and the bending support frames 3 on both sides are symmetrically pulled and installed on the crossbeam frame 1 through two positioning assemblies 5, and the inner sides of the top surfaces of the two bending support frames form a groove bottom surface; the buffer slide bar 4 is longitudinally installed on the top surface of the bending support frame 3.

[0042] In the utility model, the symmetrically installed bending support frame 3 cooperates with the crossbeam frame 1, and the left and right bending support frames 3 connected to the buffer slide 4 can be respectively pulled out to the left and right sides of the crossbeam frame 1 to realize the pull-out adjustable modular installation; it is not only convenient for installation and transportation, but also convenient for the installation, maintenance and replacement of the buffer slide 4, saving time and effort, and being convenient and fast. In the embodiment, the positioning assembly 5 is at least one group on a single side of the crossbeam frame 1, and the installation distance of the two bending support frames 3 can be adjusted according to the width of the on-site conveyor belt to realize different width groove bottom surfaces to meet the buffering requirements of conveyor belts of different widths.

[0043] In a preferred embodiment, a connecting plate 6 is installed at the end of the crossbeam frame 1, the end of the crossbeam frame 1 is fixed on the inner side of the connecting plate 6, and the buffer support assembly 2 is fixed on the outer side of the connecting plate 6. The connecting plate 6 is two opposite C-shaped steel plates, and the inner bottom of the connecting plate 6 at the end of the crossbeam frame 1 is fixedly connected. The buffer support assembly 2 is fixed on the outer side of the connecting plate 6, and further, a frame fixing hole 21 is provided at the bottom of the buffer support assembly 2. The two ends of the crossbeam frame 1 are fixedly connected to the on-site frame through the buffer support assembly 2, the middle part of the crossbeam frame 1 is suspended in the air, and the two ends use the buffer support assembly 2 to provide support and buffering, so as to improve the buffer bearing capacity of the crossbeam frame 1. The pressure direction of the buffer support assembly 2 is consistent with the running direction of the conveyor belt.

[0044] Preferably, the bending support frame 3 includes a bottom groove cross frame 31 and a side wall angle frame 32 which are integrally connected and have an obtuse top surface, and the side wall angle frame 32 is arranged on the outer top surface of the bottom groove cross frame 31. The bottom surface of the bottom groove cross frame 31 and the top surface of the beam frame 1 are fastened and connected by bolts. Accordingly, there are at least two groups of bolt holes on the bottom surface of the bottom groove cross frame 31, which play the role of temporary fixation, pre-positioning, and multi-position installation. The two bending support frames 3 are installed relative to each other, and the inner side forms a groove bottom surface. The bottom groove cross frame 31 and the beam frame 1 are positioned by the positioning assembly 5 to ensure that the installation position is symmetrical and not offset. The bottom groove cross frames 31 of the bending support frames 3 on both sides are slidably assembled on the left and right sides of the beam frame 1, which improves the assembly convenience and can further increase the size of the super heavy-duty buffer bed on the basis of existing assembly conditions.

[0045] Preferably, the angle between the top surface of the connection between the bottom trough cross frame 31 and the side wall angle frame 32 and the cross beam frame 1 is 3-8°, and the angle between the side wall angle frame 32 and the cross beam frame 1 is 28-32°. The gentle slope fillet formed at the connection between the bottom trough cross frame 31 and the side wall angle frame 32 forms a multi-angle arc transition with the side wall angle frame 32, so that the arrangement of the buffer slide 4 and the conveyor belt surface are more closely fitted, the force distribution is more uniform, and the conveyor belt passes more smoothly.

[0046] Preferably, the positioning assembly 5 includes a first positioning member 51 and a first fixing member 52; the bending support frame 3 is provided with a second positioning member 33 corresponding to the first positioning member 51 and a second fixing member 34 corresponding to the first fixing member 52. In the embodiment, the first positioning member 51 is a positioning pin, the first fixing member 52 is a bolt hole, the first positioning member 51 is a positioning groove that cooperates with the positioning pin, and the second fixing member 34 is also a bolt hole.

[0047] After the left and right bending support frames 3 are inserted into the crossbeam frame 1 from both sides, the first positioning member 51 and the second positioning member 33 at one position in the middle of the crossbeam frame 1 are locked according to the size requirements for positioning, and the bolt holes of the corresponding first fixing member 52 and the bolt holes of the second fixing member 34 are used to fix the inserted left and right bending support frames 3 and the crossbeam frame 1 with M16×45 bolts. The unique left and right insertion design decomposes the entire left and right support and the support of the middle buffer slide 4 into two left and right parts, which facilitates the installation and later replacement and maintenance of the buffer slide 4, saving time and effort, and is convenient and fast; at the same time, the complete crossbeam frame 1 and the left and right bending support frames 3 are used for connection to ensure the strength of the entire pull-out heavy-duty buffer frame.

[0048] Preferably, the buffer slide bar 4 comprises a support plate 41 and a ceramic buffer bar 42 mounted on the support plate 41; the top surface of the ceramic buffer bar 42 has a columnar ceramic block layer 43, and the thickness of the columnar ceramic block layer 43 is 15-25 mm.

[0049] In a preferred embodiment, the buffer support assembly 2 includes two rubber springs 22 whose ends are staggered and fixed by a buffer connecting plate 21, forming a double shock-absorbing module combination; the top and bottom of the buffer support assembly 2 are provided with mounting holes 23, the top mounting hole 23 is used to be fixedly connected to the outer side of the connecting plate 6 at the two ends of the crossbeam frame 1, and the bottom mounting hole 23 is used to be fixedly connected to the on-site ground or the rack. The buffer support assemblies 2 on both sides are each provided with multiple groups, and when the two staggered and fixed rubber springs 22 in each group are subjected to force and pressure, the two rubber springs simultaneously bear torsion force, thereby increasing the load-bearing capacity.

[0050] Preferably, an outer groove support assembly 7 is provided on the outer sides of both ends of the cross beam frame 1. The outer groove support assembly 7 includes a support beam 71 and an inclined buffer frame 72 installed on the top of the support beam 71. The angle between the inclined buffer frame 72 and the cross beam frame 1 is 32-38 degrees. The outer groove support assembly 7 is provided on both sides of the cross beam frame 1 and is independently installed on the on-site rack. The outer groove support assemblies 7 on both sides are adjustable structures, so that the angle and height of the fitting spacing between the buffer slide bars 4 on both sides and the two edges of the conveyor belt can be appropriately adjusted to ensure the high sealing performance of the conveyor belt and the skirt system, and effectively prevent the splashing and scattering of the conveyor belt material.

[0051] Preferably, a second buffer slide bar 8 is installed on the inclined buffer frame 72, and the second buffer slide bar 8 includes a second support plate 81, a long bending plate 82, and a second ceramic buffer bar 83 fixedly installed in sequence from bottom to top. The second ceramic buffer bar 83 and the ceramic buffer bar 42 are actually buffer bars of the same structure. The second ceramic buffer bar 83 and the long bending plate 82 are connected to the top surface of the bending support frame 3 through square head fasteners.

[0052] Preferably, the end of the long curved plate 82 facing the feeding direction of the conveyor belt has an L-shaped bend, and the front end of the second ceramic buffer strip 83 is arranged inside the L-shaped bend. The pressure direction of the long curved plate 82 is consistent with the running direction of the conveyor belt, which can effectively prevent the sliding displacement in the running direction of the conveyor belt caused by the friction between the second buffer slide bar 8 and the conveyor belt.

[0053] The ultra-heavy-duty composite secondary buffer device of the utility model has independent modular design of each component. The number of length combinations of the buffer slide bar 4 can be adjusted according to the length required by the customer to meet different length requirements and facilitate later maintenance and replacement; the arc-shaped transition surface design on the top surface of the bending support frame 3 makes the arrangement of the buffer slide bar 4 and the conveyor belt surface more closely fitted, the force distribution is more uniform, and the conveyor belt has better passability.

[0054] Each buffer support assembly 2 is assembled with two core high-strength vibration-absorbing elements. The super-strong buffering and shock-absorbing capacity can ensure that the impact of materials on the conveyor belt is fully absorbed under super-heavy load conditions. The wear-resistant layer on the top surface of the buffer slide 4 and the second buffer slide 8 is made of highly wear-resistant 92% Al2O3 columnar ceramic composite material, which can effectively solve the problem of ordinary buffer strips being not wear-resistant under large bandwidths with a bandwidth ≥ B1400 and super-heavy conditions. The rubber lining can also absorb part of the impact of materials on the conveyor belt, increase the service life of the conveyor belt, reduce the maintenance cost of the conveyor belt, and improve production efficiency.

[0055] The specific embodiments in the present invention are merely explanations of the present invention, and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An ultra-heavy composite secondary impact bed, characterized in that: The invention comprises a crossbeam frame (1), a buffer support assembly (2), two groups of bending support frames (3) and a buffer slide bar (4), wherein the buffer support assembly is in two groups and is symmetrically mounted at both ends of the crossbeam frame; at least two groups of positioning assemblies (5) are symmetrically arranged on the crossbeam frame, and the two groups of bending support frames are symmetrically pulled out and mounted on the crossbeam frame respectively through two positioning assemblies, and the inner sides of the top surfaces of the two bending support frames form a groove bottom surface; the buffer slide bar is longitudinally mounted on the top surfaces of the bending support frames; and outer groove support assemblies (7) are arranged on the outer sides of both ends of the crossbeam frame.

2. The super heavy composite secondary impact bed according to claim 1, characterized in that: A connecting plate (6) is installed at the end of the cross beam frame, the end of the cross beam frame is fixed on the inner side of the connecting plate, and the buffer support assembly is fixed on the outer side of the connecting plate.

3. The super heavy composite secondary impact bed according to claim 1, characterized in that: The bending support frame comprises a bottom groove cross frame (31) and a side wall angle frame (32) which are integrally connected and have obtuse top surfaces. The side wall angle frame is arranged on the outer top surface of the bottom groove cross frame. The bottom groove cross frame is positioned and connected to the cross beam frame via a positioning assembly.

4. The ultra-heavy composite secondary impact bed according to claim 3, characterized in that: The included angle between the top surface of the connection between the bottom trough cross frame and the side wall angle frame and the cross beam frame is 3-8°; the included angle between the side wall angle frame and the cross beam frame is 28-32°.

5. The super heavy composite secondary impact bed according to claim 1, characterized in that: The positioning assembly comprises a first positioning member (51) and a first fixing member (52); a second positioning member (33) corresponding to the first positioning member and a second fixing member (34) corresponding to the first fixing member are arranged on the bending support frame.

6. The super heavy composite secondary impact bed according to claim 1, characterized in that: The buffer support component comprises two rubber springs (22) whose ends are staggered and fixed through a buffer connection plate (21), and mounting holes (23) are provided on the top and bottom of the buffer support component.

7. The super heavy composite secondary impact bed according to claim 1, characterized in that: The buffer slide bar comprises a support plate (41) and a ceramic buffer bar (42) mounted on the support plate. The top surface of the ceramic buffer bar has a columnar ceramic block layer (43) with a thickness of 15-25 mm.

8. The super heavy composite secondary impact bed according to claim 1, characterized in that: The outer groove support assembly comprises a support beam (71) and an inclined surface buffer frame (72) installed on the top of the support beam, and the angle between the inclined surface buffer frame and the cross beam frame is 32-38 degrees.

9. The super heavy composite secondary impact bed according to claim 8, characterized in that: A second buffer slide bar (8) is installed on the inclined buffer frame, and the second buffer slide bar comprises a second support plate (81), a long bending plate (82) and a second ceramic buffer strip (83) which are fixedly installed in sequence from bottom to top.

10. The super heavy composite secondary impact bed according to claim 9, characterized in that: One end of the long bending plate facing the feeding direction of the conveyor belt has an L-shaped bend, and the front end of the second rubber lining plate is arranged on the inner side of the L-shaped bend.

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