Scraper conveyor middle trough suitable for large-mining-height and large-transportation-volume environment

Abstract

The invention relates to the technical field of coal mine mechanical equipment, in particular to a scraper conveyor middle trough suitable for a large-mining-height and large-transportation-volume environment, and the scraper conveyor middle trough suitable for the large-mining-height and large-transportation-volume environment is provided with a trough body assembly. The groove body assembly comprises a baffle groove side, a shovel plate groove side, a supporting plate, a bottom sealing plate, a first replacement plate and a second replacement plate, the two ends of the supporting plate are fixedly connected with the baffle groove side and the shovel plate groove side respectively, the bottom sealing plate is located below the supporting plate, and the two ends of the bottom sealing plate are fixedly connected with the baffle groove side and the shovel plate groove side respectively. The two ends of the first replacement plate are detachably installed on the baffle ledge and the supporting plate respectively, and the two ends of the second replacement plate are detachably installed on the shovel plate ledge and the supporting plate respectively. Thus, when the middle plate of the middle trough is abraded, only the first replacement plate or the second replacement plate needs to be detached, then a new first replacement plate or second replacement plate needs to be replaced, the middle plate of the middle trough can be replaced without welding, and the replacement efficiency of the middle plate of the middle trough is improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine mechanical equipment, and in particular to a middle trough of a scraper conveyor suitable for large mining height and large transportation volume environments. Background Art

[0002] Among the comprehensive mining equipment used in mines, the scraper conveyor is the main transportation equipment in coal mines. 80% of the main body of the equipment is composed of the middle trough, which provides a channel for the transportation of coal. With the updating of coal mining equipment, the mining height and transportation volume of coal are also increasing, and the load and wear of the middle trough are also increasing. In the environment of large mining height and large transportation volume, the middle plate of the middle trough is prone to collapse during the long-distance transportation of coal, and needs to be replaced in time.

[0003] At present, the middle plate of the middle trough is replaced by an overall splitting method. First, channel steels are welded on the shovel plate groove side and the baffle plate groove side of the middle trough as tension bars, and then the middle plate is planed off as a whole by carbon arc gouging. Then, a wear-resistant steel plate with the same strength as the middle plate is welded to the middle trough as the middle plate. However, the spacing between the middle plate and the bottom plate of the middle trough is small, and it is difficult for the welding gun to reach the weld of the middle plate for welding. The bottom plate must be planed off by carbon arc gouging to expose all the welds of the middle plate, and then the welds between the middle plate and the shovel plate groove side and the baffle plate groove side are welded in a specified order, and then the bottom plate is welded. After welding, insulation treatment is performed. The replacement and maintenance process of the middle plate is relatively cumbersome, and the bottom plate needs to be repaired after the welding of the middle plate is completed. Cracks are prone to occur at the welding point, increasing the possibility of cracking.

[0004] To solve the above technical problems, the technical solution of the Chinese invention patent announcement with patent application number CN202310424716.3 is a middle trough structure and replacement method, which is used to replace the middle plate component in the middle trough structure, including a trough body, which has two trough bodies, which are arranged parallel to each other; a middle plate component, which has multiple middle plate components, which are distributed in sequence along the extension direction of the trough body, and each middle plate component is used to carry materials; wherein the length of each middle plate component along the extension direction of the trough body is less than or equal to two-thirds of the length of the trough body along its extension direction. This solves the problem that the replacement process of the middle plate in the middle trough in the prior art is too complicated.

[0005] However, the above-mentioned prior art has the following technical problems: in the above-mentioned middle trough structure and replacement method, the middle plate is divided into multiple parts to simplify the middle plate replacement process of the middle trough, but when replacing the middle plate of the middle trough, it is still necessary to first plane off the middle plate of the middle trough, and then weld the replacement middle plate to the middle trough, and the environment in the mine is harsh. It is not only filled with various flammable and explosive gases, but also has a lot of dust and a narrow space. It is difficult to replace the middle plate of the middle trough by welding, resulting in a decrease in the replacement efficiency of the middle plate of the middle trough. Summary of the invention

[0006] In view of this, it is necessary to provide a scraper conveyor middle trough suitable for large mining height and large transportation volume environment, without having to replace the middle plate of the middle trough by welding, thereby improving the replacement efficiency of the middle plate of the middle trough.

[0007] The present invention provides a middle trough of a scraper conveyor suitable for a large mining height and large transportation volume environment, including a trough body assembly, wherein the trough body assembly includes a baffle trough side, a shovel plate trough side, a support plate, a bottom plate, a first replacement plate and a second replacement plate, wherein the two ends of the support plate are respectively fixedly connected to the baffle trough side and the shovel plate trough side, the bottom plate is located below the support plate, and the two ends are respectively fixedly connected to the baffle trough side and the shovel plate trough side, the two ends of the first replacement plate are respectively detachably mounted on the baffle trough side and the support plate, and the two ends of the second replacement plate are respectively detachably mounted on the shovel plate trough side and the support plate.

[0008] Preferably, the slot assembly further comprises at least N first connecting members of the same structure and N second connecting members of the same structure; at least N first mounting grooves are evenly formed on one side where the first replacement plate is connected to the baffle slot side, at least N first positioning grooves are evenly formed on one side where the baffle slot side is connected to the first replacement plate, each first mounting groove is arranged opposite to each first positioning groove to form at least N first fixing grooves, the bottom of each first connecting member extends into each first fixing groove, and the two ends of the top of each first connecting member are respectively bolted to the opposite first mounting groove and first positioning groove, To fix the first replacement plate to the baffle plate groove side; at least N second installation grooves are evenly opened on the side where the second replacement plate is connected to the shovel plate groove side, and at least N second positioning grooves are evenly opened on the side where the shovel plate groove side is connected to the second replacement plate, and each second installation groove is arranged opposite to each second positioning groove to form at least N second fixed grooves, and the bottom of each second connecting member extends into each second fixed groove, and the two ends of the top of each second connecting member are respectively bolted to the opposite second installation groove and second positioning groove to fix the second replacement plate to the shovel plate groove side; wherein, N≥1.

[0009] Preferably, the first replacement plate and the second replacement plate have the same structure, both comprising a C-shaped portion and a flat plate portion, the C-shaped portion being used to connect to the shovel plate groove side or the baffle plate groove side, the flat plate portion being used to connect to the support plate, and the C-shaped portion and the flat plate portion being cast as one piece to facilitate the casting of the first replacement plate and the second replacement plate.

[0010] Preferably, the flat plate portion of the first replacement plate and the flat plate portion of the second replacement plate are both connected to the support plate bolts to facilitate the disassembly and assembly of the first replacement plate and the second replacement plate; the flat plate portion of the first replacement plate does not contact the flat plate portion of the second replacement plate to prevent the impact force borne by the first replacement plate from being directly transmitted to the second replacement plate, and to prevent the impact force borne by the second replacement plate from being directly transmitted to the first replacement plate, thereby improving the service life of the first replacement plate and the second replacement.

[0011] Preferably, the baffle plate groove side and the shovel plate groove side are made of high-strength wear-resistant material to increase the service life of the baffle plate groove side and the shovel plate groove side.

[0012] Preferably, the baffle plate groove side, shovel plate groove side, support plate and bottom plate all adopt a cast-welded structure, the connection between the support plate and the baffle plate groove side and the shovel plate groove side is connected by wear-resistant wire-filling welding technology, and the connection between the bottom plate and the baffle plate groove side and the shovel plate groove side is connected by wear-resistant wire-filling welding technology to improve the wear resistance of the trough body assembly.

[0013] Preferably, the middle trough of the scraper conveyor suitable for large mining height and large transportation volume environment also includes at least one angle adjustment component; at least one push ear is evenly provided on the side of the baffle trough facing away from the support plate, and the fixed end of each angle adjustment component is used to be installed on the frame of the scraper conveyor, and the driving end of each angle adjustment component is respectively connected to each push ear to adjust the angle between the trough assembly and the frame of the scraper conveyor.

[0014] Preferably, each angle adjustment assembly includes a fixed seat, a connecting seat and an adjusting cylinder, the fixed seat is located at the top end of the baffle groove side facing away from the support plate, one end of the connecting seat is used to be mounted on the frame of the scraper conveyor, and the other end is rotatably connected to the push ear, and the two ends of the adjusting cylinder are rotatably mounted on the connecting seat and the fixed seat respectively, so that the baffle groove side can rotate with the connection between each connecting seat and each push ear as the center through the extension and contraction of the adjusting cylinder.

[0015] Preferably, each angle adjustment component also includes a first clamping block and a second clamping block; both ends of the adjustment cylinder are spherical; a first adjustment groove is provided on the fixing seat, a hemispherical first clamping groove is provided on the first adjustment groove, a hemispherical second clamping groove is provided on the first clamping block, the first clamping block is fixedly installed in the first adjustment groove, and the first clamping groove can be connected with the second clamping groove to form a spherical first cylinder groove; a second adjustment groove is provided on the connecting seat, a hemispherical third clamping groove is provided on the second adjustment groove, a hemispherical fourth clamping groove is provided on the second clamping block, the second clamping block is fixedly installed in the second adjustment groove, and the third clamping groove can be connected with the fourth clamping groove to form a spherical second cylinder groove, and the two ends of the adjustment cylinder are respectively clamped in the first cylinder groove and the second cylinder groove.

[0016] Preferably, each angle adjustment assembly also includes a first wedge block and a second wedge block, the first wedge block is fixedly installed in the first adjustment slot by bolts, and the two sides of the first clamping block are respectively clamped with the fixing seat and the first wedge block, so that the first clamping block is fixedly installed in the first adjustment slot through the first wedge block; the second wedge block is fixedly installed in the second adjustment slot by bolts, and the two sides of the second clamping block are respectively clamped with the connecting seat and the second wedge block, so that the second clamping block is fixedly installed in the second adjustment slot through the second wedge block.

[0017] The above-mentioned scraper conveyor suitable for large mining height and large transportation volume environment is provided with a trough body assembly in the middle trough, the trough body assembly includes a baffle trough side, a shovel plate trough side, a support plate, a bottom plate, a first replacement plate and a second replacement plate, the two ends of the support plate are respectively fixedly connected to the baffle trough side and the shovel plate trough side, the bottom plate is located below the support plate, and the two ends are respectively fixedly connected to the baffle trough side and the shovel plate trough side, the two ends of the first replacement plate are respectively detachably installed on the baffle trough side and the support plate, and the two ends of the second replacement plate are respectively detachably installed on the shovel plate trough side and the support plate; in this way, when the middle plate of the middle trough is worn and needs to be replaced, the two ends of the first replacement plate are first removed from the baffle trough side and the support plate, or the two ends of the second replacement plate are respectively removed from the shovel plate trough side and the support plate, and then the new first replacement plate or the second replacement plate is replaced, so that the middle plate of the middle trough can be replaced, thereby replacing the middle plate of the middle trough without welding, thereby improving the replacement efficiency of the middle plate of the middle trough. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a side view of the middle trough of the scraper conveyor of the present application which is suitable for large mining height and large transportation volume environment.

[0019] Figure 2 It is a top view of the middle trough of the scraper conveyor of the present application which is suitable for large mining height and large transportation volume environment.

[0020] Figure 3 It is a side view of the tank assembly of the present application.

[0021] Figure 4 It is an oblique bird's-eye view of the baffle groove of the present application.

[0022] Figure 5 is a front view of the first replacement plate of the present application.

[0023] Figure 6 It is an oblique top-down view of the angle adjustment component of the present application.

[0024] Figure 7 It is an oblique upward view of the fixing seat of the present application.

[0025] Figure 8 This is an oblique bird's-eye view of the connection socket of the present application.

[0026] Fig. 9 This is an oblique bird's-eye view of the first card block of the present application.

[0027] Fig.10 This is an oblique bird's-eye view of the second card block of the present application.

[0028] In the figure: the middle trough 10 of the scraper conveyor suitable for large mining height and large transportation environment, the trough body assembly 20, the baffle trough side 21, the first positioning groove 211, the push ear 212, the shovel plate trough side 22, the second positioning groove 221, the support plate 23, the bottom plate 24, the first replacement plate 25, the first installation groove 251, the C-shaped part 252, the flat part 253, the second replacement plate 26, the second installation groove 261, the first connecting member 27, the second connecting member 28, the angle adjustment assembly 30, the fixing seat 31, the first adjustment groove 311, the first clamping groove 312, the connecting seat 32, the second adjustment groove 321, the third clamping groove 322, the adjustment cylinder 33, the first clamping block 33, the second clamping groove 331, the second clamping block 34, the fourth clamping groove 341, the first wedge block 35, and the second wedge block 36. DETAILED DESCRIPTION

[0029] The technical solutions and technical effects of the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings of the present invention.

[0030] Please refer to Figure 1 to Figure 2The present invention provides a middle trough 10 of a scraper conveyor suitable for a large mining height and large transportation volume environment, including a trough body assembly 20, the trough body assembly 20 includes a baffle trough side 21, a shovel plate trough side 22, a support plate 23, a bottom plate 24, a first replacement plate 25 and a second replacement plate 26, the two ends of the support plate 23 are respectively fixedly connected to the baffle trough side 21 and the shovel plate trough side 22, the bottom plate 24 is located below the support plate 23, and the two ends are respectively fixedly connected to the baffle trough side 21 and the shovel plate trough side 22, and the two ends of the first replacement plate 25 are respectively detachably mounted on the baffle trough side 21. and the support plate 23, and the two ends of the second replacement plate 26 are detachably mounted on the shovel plate groove side 22 and the support plate 23 respectively; in this way, when the middle plate of the middle groove is worn and needs to be replaced, first remove the two ends of the first replacement plate 25 from the baffle groove side 21 and the support plate 23 respectively, or remove the two ends of the second replacement plate 26 from the shovel plate groove side 22 and the support plate 23 respectively, and then replace it with the new first replacement plate 25 or the second replacement plate 26, so that the middle plate of the middle groove can be replaced, thereby replacing the middle plate of the middle groove without welding, thereby improving the replacement efficiency of the middle plate of the middle groove.

[0031] Please refer to Figures 1 to 3 Furthermore, the tank assembly 20 further includes at least N first connecting members 27 with the same structure and N second connecting members 28 with the same structure; at least N first mounting grooves 251 are uniformly formed on one side where the first replacement plate 25 is connected to the baffle plate tank side 21, and at least N first positioning grooves 211 are uniformly formed on one side where the baffle plate tank side 21 is connected to the first replacement plate 25, and each first mounting groove 251 is arranged opposite to each first positioning groove 211 to form at least N first fixing grooves, and the bottom of each first connecting member 27 extends into each first fixing groove, and the two ends of the top of each first connecting member 27 are respectively bolted to the first mounting groove 251 and the first positioning groove 211 opposite to each other, so as to prevent the first mounting groove 251 from being damaged and the first positioning groove 211 from being damaged. The first replacement plate 25 is fixedly connected to the baffle plate groove side 21; at least N second installation grooves 261 are evenly opened on the side where the second replacement plate 26 is connected to the shovel plate groove side 22, and at least N second positioning grooves 221 are evenly opened on the side where the shovel plate groove side 22 is connected to the second replacement plate 26. Each second installation groove 261 is arranged opposite to each second positioning groove 221 to form at least N second fixed grooves, and the bottom of each second connecting member 28 extends into each second fixed groove, and the two ends of the top of each second connecting member 28 are respectively bolted to the opposite second installation groove 261 and the second positioning groove 221 to fix the second replacement plate 26 to the shovel plate groove side 22; wherein, N≥1.

[0032] Please refer to 1 and Figure 5Furthermore, the first replacement plate 25 and the second replacement plate 26 have the same structure, both including a C-shaped portion 252 and a flat portion 253. The C-shaped portion 252 is used to connect to the shovel plate groove or the baffle plate groove, and the flat portion 253 is used to connect to the support plate. The C-shaped portion 252 and the flat portion 253 are cast as one piece to facilitate the casting of the first replacement plate 25 and the second replacement plate 26. Specifically, during casting, there is no need to cast the first replacement plate 25 and the second replacement plate 26 separately. Only the same C-shaped groove needs to be cast in batches. During replacement, there is no need to select a specific first replacement plate 25 or second replacement plate 26 to facilitate the replacement of the first replacement plate 25 and the second replacement plate 26.

[0033] In this embodiment, the first replacement plate 25 or the second replacement plate 26 is directly replaced after being worn, so that the service life of the middle plate part of the middle trough 10 of the scraper conveyor suitable for large mining height and large transportation volume environment can be balanced with other parts, and the overall service life of the middle trough 10 of the scraper conveyor suitable for large mining height and large transportation volume environment is increased by 200% compared with the traditional middle trough.

[0034] Please refer to Figure 2 Furthermore, the flat plate portion of the first replacement plate 25 and the flat plate portion of the second replacement plate 26 are both connected to the support plate bolts to facilitate the disassembly and assembly of the first replacement plate 25 and the second replacement plate 26; the flat plate portion of the first replacement plate 25 and the flat plate portion of the second replacement plate 26 are not in contact with each other to prevent the impact force borne by the first replacement plate 25 from being directly transmitted to the second replacement plate 26, and to prevent the impact force borne by the second replacement plate 26 from being directly transmitted to the first replacement plate 25, thereby improving the service life of the first replacement plate 25 and the second replacement.

[0035] Furthermore, the baffle plate groove side 21 and the shovel plate groove side 22 are made of high-strength wear-resistant materials, for example, BN1200 cast steel material, and the wear resistance is improved by 30% or more than that of traditional materials, so as to improve the service life of the baffle plate groove side 21 and the shovel plate groove side 22.

[0036] Furthermore, the baffle plate groove side 21, the shovel plate groove side 22, the support plate 23 and the bottom plate 24 all adopt a cast-welded structure, the connection between the support plate 23 and the baffle plate groove side 21 and the shovel plate groove side 22 is connected by wear-resistant wire-filling welding technology, and the connection between the bottom plate 24 and the baffle plate groove side 21 and the shovel plate groove side 22 is connected by wear-resistant wire-filling welding technology to improve the wear resistance of the trough body assembly 20.

[0037] Please refer to Figure 1 , Figure 4 and Figure 6Furthermore, the middle trough 10 of the scraper conveyor suitable for large mining height and large transportation environment also includes at least one angle adjustment component 30; at least one push ear 212 is evenly provided on the side of the baffle trough 21 facing away from the support plate 23, and the fixed end of each angle adjustment component 30 is used to be installed on the frame of the scraper conveyor, and the driving end of each angle adjustment component 30 is respectively connected to each push ear 212 to adjust the angle between the trough body component 20 and the frame of the scraper conveyor to adapt to working surfaces with different strike angles, and can be used for downward mining or upward mining, thereby adapting to coal walls with different inclination angles.

[0038] Please refer to Figures 6 to 10 Furthermore, the angle adjustment assembly 30 includes a fixed seat 31, a connecting seat 32 and an adjusting cylinder 33. The fixed seat 31 is located at the top of the baffle groove 21 on the side facing away from the support plate 23. One end of the connecting seat 32 is used to be installed on the frame of the scraper conveyor, and the other end is rotatably connected to the push ear 212. The two ends of the adjusting cylinder 33 are rotatably installed on the connecting seat 32 and the fixed seat 31 respectively, so that the baffle groove 21 can rotate with the connection between the connecting seat 32 and the push ear 212 as the center through the expansion and contraction of the adjusting cylinder 33, so that the trough assembly 20 is lifted according to the changes in the coal wall and coal mining, thereby reducing the resistance of the trough assembly 20 during the forward movement.

[0039] Please refer to Figures 6 to 10 Further, each angle adjustment component 30 also includes a first clamping block 33 and a second clamping block 34; both ends of the adjustment cylinder 33 are spherical; a first adjustment groove 311 is formed on the fixing seat 31, a hemispherical first clamping groove 312 is formed on the first adjustment groove 311, a hemispherical second clamping groove 331 is formed on the first clamping block 33, the first clamping block 33 is fixedly installed in the first adjustment groove 311, and the first clamping groove 312 can be connected with the second clamping groove 331 to form a spherical first cylinder groove; a second adjustment groove 321 is formed on the connecting seat 32, a hemispherical third clamping groove 322 is formed on the second adjustment groove 321, a hemispherical fourth clamping groove 341 is formed on the second clamping block 34, the second clamping block 34 is fixedly installed in the second adjustment groove 321, and the third clamping groove 322 can be connected with the fourth clamping groove 341 to form a spherical second cylinder groove, and the two ends of the adjustment cylinder 33 are respectively clamped in the first cylinder groove and the second cylinder groove.

[0040] In this embodiment, the fixed end of the adjusting cylinder 33 is installed in the first cylinder groove, and the driving end is installed in the second cylinder groove to prevent pollutants in the mine, such as coal ash and slag, from falling into the adjusting cylinder 33 and causing the adjusting cylinder 33 to be blocked.

[0041] Please refer to Figures 6 to 10Furthermore, each angle adjustment assembly 30 also includes a first wedge block 35 and a second wedge block 36. The first wedge block 35 is fixedly installed in the first adjustment groove 311 by bolts, and the two sides of the first clamping block 33 are respectively clamped with the fixing seat 31 and the first wedge block 35, so that the first clamping block 33 is fixedly installed in the first adjustment groove 311 through the first wedge block 35; the second wedge block 36 is fixedly installed in the second adjustment groove 321 by bolts, and the two sides of the second clamping block 34 are respectively clamped with the connecting seat 32 and the second wedge block 36, so that the second clamping block 34 is fixedly installed in the second adjustment groove 321 through the second wedge block 36.

[0042] In one embodiment, the first clamping block 33 is fixedly installed in the first adjustment slot 311 by bolts, and the second clamping block 34 is fixedly installed in the second adjustment slot 321 by bolts.

[0043] In this embodiment, the middle troughs 10 of the scraper conveyors suitable for large mining heights and large transport volumes are positioned and connected by spherical cylindrical pins. The chute misalignment of the middle troughs of the scraper conveyors suitable for large mining heights and large transport volumes connected in this way is no more than 1 / 3 of that of the traditional middle trough structure.

[0044] In this embodiment, the middle trough 10 of the scraper conveyor suitable for large mining height and large transportation volume environment has a trough width of 1800 mm, a trough length of 2400 mm, and a conveying capacity of 8500 t / h.

[0045] In this embodiment, the middle groove 10 of the scraper conveyor is suitable for large mining height and large transportation environment. The pin row used is a strong traction pin row. The pin row adopts a convex tooth design and can withstand 3000kN mining machine traction force and engage well, meeting the traction requirements of large mining height coal mining machines under various geological conditions.

[0046] Example 1, replacement process of the first replacement plate 25 1. Remove the bolts at both ends of the connecting piece in the first fixing groove, and take the connecting piece out of the first fixing groove; 2. Remove the bolts at the connection between the first replacement plate 25 and the support plate 23; 3. Take out the first replacement plate 25; 4. Place the new first replacement plate 25 in the designated position; 5. Bolt the new first replacement plate 25 to the support plate 23; 6. Place the connecting piece into the first fixing groove, and respectively connect its two ends to the first installation groove 251 and the first positioning groove 211 with bolts.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A middle trough of a scraper conveyor suitable for large mining height and large transportation volume environment, characterized in that: The invention comprises a trough body assembly, which comprises a baffle plate trough side, a shovel plate trough side, a support plate, a bottom plate, a first replacement plate and a second replacement plate, wherein two ends of the support plate are respectively fixedly connected to the baffle plate trough side and the shovel plate trough side, the bottom plate is located below the support plate, and two ends are respectively fixedly connected to the baffle plate trough side and the shovel plate trough side, the two ends of the first replacement plate are respectively detachably mounted on the baffle plate trough side and the support plate, and the two ends of the second replacement plate are respectively detachably mounted on the shovel plate trough side and the support plate.

2. The middle trough of a scraper conveyor suitable for large mining height and large transportation volume environment as claimed in claim 1, characterized in that: The slot assembly also includes at least N first connecting members with the same structure and N second connecting members with the same structure; at least N first mounting grooves are evenly formed on one side of the first replacement plate connected to the baffle slot side, and at least N first positioning grooves are evenly formed on one side of the baffle slot side connected to the first replacement plate, and each first mounting groove is arranged opposite to each first positioning groove to form at least N first fixing grooves, and the bottom of each first connecting member extends into each first fixing groove, and the two ends of the top of each first connecting member are respectively connected to the opposite first mounting groove and the first positioning groove with bolts, so as to fix The first replacement plate is fixedly connected to the baffle plate groove side; at least N second installation grooves are evenly opened on the side where the second replacement plate is connected to the shovel plate groove side, and at least N second positioning grooves are evenly opened on the side where the shovel plate groove side is connected to the second replacement plate, and each second installation groove is arranged opposite to each second positioning groove to form at least N second fixed grooves, and the bottom of each second connecting member extends into each second fixed groove, and the two ends of the top of each second connecting member are respectively bolted to the opposite second installation groove and second positioning groove to fix the second replacement plate to the shovel plate groove side; wherein, N≥1.

3. The middle trough of the scraper conveyor suitable for large mining height and large transportation volume environment as claimed in claim 1, characterized in that: The first replacement plate and the second replacement plate have the same structure, both including a C-shaped portion and a flat plate portion. The C-shaped portion is used to connect to the shovel plate groove side or the baffle plate groove side, and the flat plate portion is used to connect to the support plate. The C-shaped portion and the flat plate portion are cast as one piece to facilitate the casting of the first replacement plate and the second replacement plate.

4. The middle trough of the scraper conveyor suitable for large mining height and large transportation volume environment as claimed in claim 3, characterized in that: The flat plate portion of the first replacement plate and the flat plate portion of the second replacement plate are both connected to the support plate bolts to facilitate the disassembly and assembly of the first replacement plate and the second replacement plate; the flat plate portion of the first replacement plate does not contact the flat plate portion of the second replacement plate to prevent the impact force borne by the first replacement plate from being directly transmitted to the second replacement plate, and to prevent the impact force borne by the second replacement plate from being directly transmitted to the first replacement plate, thereby improving the service life of the first replacement plate and the second replacement.

5. The middle trough of the scraper conveyor suitable for large mining height and large transportation volume environment as claimed in claim 1, characterized in that: The baffle plate groove side and the shovel plate groove side are made of high-strength wear-resistant material to increase the service life of the baffle plate groove side and the shovel plate groove side.

6. The middle trough of a scraper conveyor suitable for large mining height and large transportation volume environment as claimed in claim 1, characterized in that: The baffle plate groove side, shovel plate groove side, support plate and bottom plate all adopt a cast-welded structure. The connection between the support plate and the baffle plate groove side and the shovel plate groove side is connected by wear-resistant wire-filling welding technology. The connection between the bottom plate and the baffle plate groove side and the shovel plate groove side is connected by wear-resistant wire-filling welding technology to improve the wear resistance of the trough body assembly.

7. The middle trough of a scraper conveyor suitable for large mining height and large transportation volume environment as claimed in claim 1, characterized in that: The middle trough of the scraper conveyor suitable for large mining height and large transportation volume environment also includes at least one angle adjustment component; at least one push ear is evenly provided on the side of the baffle trough facing away from the support plate, and the fixed end of each angle adjustment component is used to be installed on the frame of the scraper conveyor, and the driving end of each angle adjustment component is respectively connected to each push ear to adjust the angle between the trough assembly and the frame of the scraper conveyor.

8. The middle trough of a scraper conveyor suitable for large mining height and large transportation volume environment as claimed in claim 7, characterized in that: Each angle adjustment assembly includes a fixed seat, a connecting seat and an adjusting cylinder. The fixed seat is located at the top end of the baffle groove side facing away from the support plate. One end of the connecting seat is used to be installed on the frame of the scraper conveyor, and the other end is rotatably connected to the push ear. The two ends of the adjusting cylinder are rotatably installed on the connecting seat and the fixed seat respectively, so that the baffle groove side can rotate with the connection between each connecting seat and each push ear as the center through the extension and contraction of the adjusting cylinder.

9. The middle trough of a scraper conveyor suitable for large mining height and large transportation volume environment as claimed in claim 8, characterized in that: Each angle adjustment component also includes a first clamping block and a second clamping block; both ends of the adjustment cylinder are spherical; a first adjustment groove is provided on the fixed seat, a hemispherical first clamping groove is provided on the first adjustment groove, a hemispherical second clamping groove is provided on the first clamping block, the first clamping block is fixedly installed in the first adjustment groove, and the first clamping groove can be connected with the second clamping groove to form a spherical first cylinder groove; a second adjustment groove is provided on the connecting seat, a hemispherical third clamping groove is provided on the second adjustment groove, a hemispherical fourth clamping groove is provided on the second clamping block, the second clamping block is fixedly installed in the second adjustment groove, and the third clamping groove can be connected with the fourth clamping groove to form a spherical second cylinder groove, and the two ends of the adjustment cylinder are respectively clamped in the first cylinder groove and the second cylinder groove.

10. The middle trough of a scraper conveyor suitable for large mining height and large transportation volume environment as claimed in claim 9, characterized in that: Each angle adjustment assembly also includes a first wedge block and a second wedge block. The first wedge block is fixedly installed in the first adjustment slot by bolts, and the two sides of the first clamping block are respectively clamped with the fixing seat and the first wedge block, so that the first clamping block is fixedly installed in the first adjustment slot through the first wedge block; the second wedge block is fixedly installed in the second adjustment slot by bolts, and the two sides of the second clamping block are respectively clamped with the connecting seat and the second wedge block, so that the second clamping block is fixedly installed in the second adjustment slot through the second wedge block.

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