Cross side dump headframe and flight conveyor

Abstract

The utility model provides a kind of cross side unloading type head frame and scraper conveyor, it is related to coal mine underground transport equipment technical field, cross side unloading type head frame includes: head frame body is connected with transfer machine upper chain channel middle plate and transfer machine lower chain channel bottom plate;Scraper machine upper chain channel movable middle plate is connected with head frame body;Scraper machine lower chain channel bottom plate is connected with head frame body;Scraper machine upper chain channel movable middle plate, transfer machine upper chain channel middle plate, scraper machine lower chain channel bottom plate and transfer machine lower chain channel bottom plate are sequentially arranged from top to bottom, form scraper machine upper chain passage, transfer machine upper chain passage, scraper machine lower chain passage and transfer machine lower chain passage;Multiple coal return holes are equipped on scraper machine lower chain channel bottom plate, each coal return hole is equipped with a baffle, and the baffle is detachably connected with the coal return hole.In the technical scheme of the utility model, the overall opening of multiple coal return holes is adjusted by flexible disassembly and assembly of the baffle, thereby realizing multi-stage adjustment of coal return amount, and solving the problem of power imbalance.

Description

Technical Field

[0001] This utility model relates to the technical field of underground transportation equipment in coal mines, and more specifically, to a cross-side unloading head frame and scraper conveyor. Background Technology

[0002] In the efficient transportation system of a fully mechanized coal mining face, the coordinated operation of the scraper conveyor and the roadway transfer conveyor is the core link in the continuous transportation of coal. Fully mechanized mining faces typically use a cross-side-discharge headstock to transfer coal blocks between the scraper conveyor and the roadway transfer conveyor.

[0003] In related technologies, the cross-side unloading head frame includes a scraper conveyor lower chain track bottom plate, on which a special-shaped elongated coal return hole is provided. The coal returned from the scraper conveyor can be unloaded into the lower chain track of the transfer machine through this special-shaped elongated coal return hole. However, the coal return hole is usually of a fixed size and its opening cannot be adjusted. When the coal return flow is unbalanced, it will lead to a power imbalance between the transfer machine and the scraper conveyor. Utility Model Content

[0004] In order to solve or improve the technical problem that the opening of the coal return hole cannot be adjusted, which easily leads to power imbalance between the transfer machine and the scraper conveyor, one objective of this utility model is to provide a cross-side unloading head frame.

[0005] Another objective of this invention is to provide a scraper conveyor having the aforementioned cross-side unloading head frame.

[0006] To achieve the above objectives, the first aspect of this utility model provides a cross-side unloading head frame for connecting a transfer conveyor, the transfer conveyor including an upper chain conveyor middle plate and a lower chain conveyor bottom plate; the cross-side unloading head frame includes: a head frame body connected to the upper chain conveyor middle plate and the lower chain conveyor bottom plate of the transfer conveyor; a scraper conveyor upper chain conveyor movable middle plate connected to the head frame body; and a scraper conveyor lower chain conveyor bottom plate connected to the head frame body; the scraper conveyor upper chain conveyor movable middle plate, the transfer conveyor upper chain conveyor middle plate, the scraper conveyor lower chain conveyor bottom plate, and the transfer conveyor lower chain conveyor bottom plate are arranged sequentially from top to bottom; the scraper... A scraper conveyor upper chain channel is formed above the movable middle plate of the upper chain conveyor; a transfer conveyor upper chain channel is formed between the movable middle plate of the upper chain conveyor and the middle plate of the upper chain conveyor of the transfer conveyor; a scraper conveyor lower chain channel is formed between the middle plate of the upper chain conveyor of the transfer conveyor and the bottom plate of the lower chain conveyor of the scraper conveyor; a transfer conveyor lower chain channel is formed between the bottom plate of the lower chain conveyor of the scraper conveyor and the bottom plate of the lower chain conveyor of the transfer conveyor; multiple coal return holes are provided on the bottom plate of the lower chain conveyor of the scraper conveyor, and each coal return hole is provided with a corresponding blocking plate. The blocking plate and the coal return hole are detachably connected; when the blocking plate and the coal return hole are connected, the blocking plate is used to block the coal return hole.

[0007] In the technical solution defined by this utility model, firstly, each coal return hole is provided with a corresponding blocking plate, and the blocking plate is detachably connected to the coal return hole. This design allows workers to flexibly disassemble and install the blocking plate, adjust the overall opening of multiple coal return holes, thereby achieving multi-level adjustment of the coal return volume and solving the problem of power imbalance. Secondly, workers can disassemble or replace the blocking plate in a short time (usually no more than 10 minutes), which helps to reduce downtime and improve work efficiency. Thirdly, the modular design helps to reduce maintenance costs and extend the service life of the equipment.

[0008] In some technical solutions, optionally, the wall of the coal return hole is provided with a wing plate; the blocking plate is a cylinder, and an annular groove is provided on the circumferential side wall of the blocking plate. A clearance notch is provided at the bottom of the blocking plate, and the clearance notch communicates with the annular groove; during the process of the blocking plate extending into the coal return hole, the wing plate enters the annular groove through the clearance notch, and the wing plate is used to abut against the groove wall of the annular groove.

[0009] In this technical solution, the blocking plate and the coal return hole adopt a rotatable locking mechanical connection structure to achieve a detachable connection between the blocking plate and the coal return hole. Through the rotational interlocking structure of the wing plate and the annular groove, the blocking plate forms a mechanical interlock with the coal return hole after installation, preventing the blocking plate from loosening and falling off due to coal flow impact or equipment vibration. Compared with the traditional bolt fixing method, locking can be achieved by rotation without additional tools, making operation convenient and more reliable.

[0010] In some technical solutions, optionally, the upper surface of the wing plate is the upper limit surface and the lower surface of the wing plate is the lower limit surface; when the wing plate is in the annular groove, rotating the blocking plate allows the upper limit surface to abut against the groove wall of the annular groove, and the lower limit surface to abut against the groove wall of the annular groove.

[0011] In this technical solution, when the blocking plate is inserted into the coal return hole and rotated until the wing plate is completely inside the annular groove, the upper limit surface of the wing plate is in close contact with the upper wall of the annular groove; the lower limit surface of the wing plate is in close contact with the lower wall of the annular groove. This design can prevent the blocking plate from moving along the axial direction (vertical direction), avoiding the blocking plate from loosening, falling off, or sinking due to the impact of coal flow, and ensuring the stability of the coal return hole opening.

[0012] In some technical solutions, optionally, the wing plate is provided with a first through hole; the blocking plate is provided with a second through hole, the second through hole communicating with the annular groove; the cross-side unloading nose frame also includes: a cylindrical pin, which passes through the second through hole and the first through hole when the wing plate is in the annular groove, so as to realize the detachable connection between the blocking plate and the wing plate.

[0013] In this technical solution, by setting a cylindrical pin, firstly, it helps to improve the connection strength between the blocking plate and the coal return hole when they are connected, and largely prevents the blocking plate from detaching from the coal return hole during operation; secondly, it prevents the blocking plate from rotating around the axis, avoids the blocking plate from being unlocked due to misoperation or vibration, and ensures the reliability of the adjustment state.

[0014] In some technical solutions, optionally, the blocking plate is provided with a raised hole, which is connected to the annular groove.

[0015] In this technical solution, the purpose of setting the tilting hole is to provide a point of force application, so that workers can easily insert tools into the tilting hole to rotate the blocking plate, thus avoiding the situation where the blocking plate gets stuck and cannot be rotated.

[0016] In some technical solutions, optionally, the plug plate is provided with a disassembly threaded hole, which is used to screw in bolts to assist in the insertion and removal of the plug plate; the disassembly threaded hole is a through hole structure or a blind hole structure.

[0017] In this technical solution, by setting a disassembly threaded hole on the plug plate, it is convenient for workers to screw bolts into the disassembly threaded hole, and to insert, remove or rotate the plug plate by hand using the bolt, which is easy to operate.

[0018] In some technical solutions, optionally, the upper chain conveyor plate of the transfer machine is provided with a skylight hole, which is connected to the lower chain conveyor of the scraper conveyor; the cross-side unloading machine head frame also includes: a skylight plate, which is detachably connected to the skylight hole; when the skylight plate and the skylight hole are connected, the skylight plate is used to block the skylight hole.

[0019] In this technical solution, when the skylight plate covers the skylight opening, its surface is flush with the upper surface of the middle plate of the upper chain conveyor of the transfer machine, forming a continuous coal transportation plane. After the skylight plate is removed, the skylight opening is exposed, forming an operating window that leads directly to the lower chain channel of the scraper conveyor, facilitating maintenance, observation, and adjustment by the staff.

[0020] In some technical solutions, optionally, at least two coal return holes have different diameters; and / or the diameter of the coal return holes is 120 mm to 260 mm.

[0021] In this technical solution, by setting the diameters of at least two coal return holes to be different, and matching the size of the blocking plate with the diameter of the coal return holes, this design method is conducive to the precise adjustment of the coal return amount, effectively avoiding the situation where there is no coal accumulation or excessive coal accumulation in the scraper after adjustment.

[0022] By limiting the diameter range of the coal return holes, firstly, the diameter of a single coal return hole is not too large, avoiding insufficient adjustment accuracy after disassembling and assembling the blocking plate, and also ensuring the structural strength of the bottom plate of the scraper conveyor's lower chain track; secondly, the diameter of a single coal return hole is not too small, avoiding difficulties in adjustment.

[0023] In some technical solutions, optionally, the upper conveyor plate of the scraper conveyor is detachably connected to the head frame body.

[0024] In this technical solution, the detachable design of the movable middle plate of the scraper conveyor's upper chain path facilitates the disassembly and assembly of the movable middle plate by workers, which is beneficial for maintenance or replacement. During maintenance, workers can quickly disassemble and assemble the movable middle plate (the movable middle plate of the scraper conveyor's upper chain path) to expose the internal chain path (such as the upper chain channel of the scraper conveyor).

[0025] The second aspect of this utility model provides a scraper conveyor, including: a cross-side unloading head frame as described in any of the above technical solutions, used to connect a transfer machine.

[0026] Since the scraper conveyor includes any of the cross-side unloading head frames mentioned in the first aspect above, it has the beneficial effects of any of the above technical solutions, which will not be elaborated here.

[0027] Additional aspects and advantages of the present invention will become apparent in the following description or may be learned by practice of the present invention. Attached Figure Description

[0028] Figure 1 A schematic diagram of a cross-side unloading machine head frame according to an embodiment of the present invention is shown;

[0029] Figure 2 A cross-sectional view of a cross-side unloading head frame according to an embodiment of the present invention is shown;

[0030] Figure 3 A schematic diagram of a cross-side unloading machine head frame according to another embodiment of the present invention is shown;

[0031] Figure 4 A top view of a cross-side unloading head frame according to an embodiment of the present invention is shown;

[0032] Figure 5 A cross-sectional view of a cross-side unloading head frame according to another embodiment of the present invention is shown;

[0033] Figure 6 A cross-sectional view of the bottom plate of the scraper conveyor lower chain track according to an embodiment of the present invention is shown;

[0034] Figure 7 A schematic diagram of the bottom plate of the scraper conveyor lower chain track according to an embodiment of the present invention is shown;

[0035] Figure 8 A schematic diagram of a blocking plate according to an embodiment of the present invention is shown;

[0036] Figure 9 A schematic diagram of the bottom plate of the scraper conveyor lower chain track according to another embodiment of the present invention is shown;

[0037] Figure 10 A schematic diagram of a scraper conveyor according to another embodiment of the present invention is shown.

[0038] in, Figures 1 to 10 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0039] 100: Cross-side unloading head frame; 110: Head frame body; 121: Upper chain conveyor plate of scraper conveyor; 122: Lower chain conveyor bottom plate of scraper conveyor; 123: Upper chain channel of scraper conveyor; 124: Upper chain channel of transfer conveyor; 125: Lower chain channel of scraper conveyor; 126: Lower chain channel of transfer conveyor; 131: Coal return hole; 132: Wing plate; 1321: Upper limit surface; 1322: Lower limit surface; 1323: First through hole; 1 40: Blocking plate; 141: Annular groove; 142: Clearance notch; 143: Second through hole; 144: Raised hole; 145: Disassembly threaded hole; 151: Cylindrical pin; 152: Bolt; 153: Skylight plate; 200: Scraper conveyor; 210: Scraper chain assembly; 300: Transfer conveyor; 310: Middle plate of upper chain track of transfer conveyor; 311: Skylight hole; 320: Bottom plate of lower chain track of transfer conveyor; D1: Diameter of return coal hole. Detailed Implementation

[0040] To better understand the above-mentioned objectives, features, and advantages of the embodiments of this utility model, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, embodiments of the present invention may be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0042] The following reference Figures 1 to 10 This invention describes a cross-side unloading headstock and scraper conveyor provided according to some embodiments of the present invention.

[0043] In one embodiment of this utility model, the cross-side unloading head frame 100 is used to connect the transfer machine 300, which includes an upper chain track middle plate 310 and a lower chain track bottom plate 320.

[0044] It should be noted that the cross-side-discharge headstock 100 is part of the scraper conveyor 200. In the fully mechanized mining face, the cross-side-discharge headstock 100 is used to transfer materials between the scraper conveyor 200 and the transfer conveyor 300. Optionally, the material is coal.

[0045] Optionally, the transfer machine 300 is a roadway transfer machine. A roadway transfer machine is an intermediate transfer device installed in the roadway (arranged along the coal seam direction) of a fully mechanized coal mining face, used to receive materials unloaded by the scraper conveyor 200, and to transfer the materials to the belt conveyor (belt conveyor) through its own scraper chain drive system.

[0046] The cross-side discharge headstock 100 is used to unload materials from the scraper conveyor's lower chain channel 125 through the coal return hole 131 to the transfer conveyor's lower chain channel 126. The scraper chain of the transfer conveyor 300 drives the material to move towards the tail of the machine, and finally unloads it onto the belt conveyor, completing the transfer transportation.

[0047] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the cross-side unloading conveyor head frame 100 includes a head frame body 110, a movable middle plate 121 of the upper conveyor track of the scraper conveyor, and a bottom plate 122 of the lower conveyor track of the scraper conveyor. The head frame body 110 is connected to the middle plate 310 of the upper conveyor track of the transfer conveyor; the head frame body 110 is also connected to the bottom plate 320 of the lower conveyor track of the transfer conveyor. The movable middle plate 121 of the upper conveyor track of the scraper conveyor is connected to the head frame body 110; the bottom plate 122 of the lower conveyor track of the scraper conveyor is connected to the head frame body 110.

[0048] In other words, the transfer machine upper conveyor plate 310, the transfer machine lower conveyor bottom plate 320, the scraper conveyor upper conveyor plate 121, and the scraper conveyor lower conveyor bottom plate 122 are all connected to the head frame body 110, and the head frame body 110 mainly serves to install the carrier.

[0049] Optionally, the movable center plate 121 of the scraper conveyor upper chain track is detachably connected to the head frame body 110, which facilitates the disassembly and assembly of the movable center plate 121 by the operator, and is beneficial for maintenance or replacement. During maintenance, the operator can quickly disassemble and assemble the movable center plate (movable center plate 121 of the scraper conveyor upper chain track) to expose the internal chain track (such as the scraper conveyor upper chain channel 123).

[0050] In one specific embodiment, the upper chain conveyor plate 310 of the transfer machine is fixedly connected to the head frame body 110 by welding. This design method is simple to manufacture and helps to ensure the connection strength between the upper chain conveyor plate 310 and the head frame body 110. In addition, the upper chain conveyor plate 310 needs to withstand the coal transportation load of the upper chain channel 124 of the transfer machine and the tension of the scraper chain. Welding fixation can avoid loosening of the connection due to vibration or impact, and ensure structural stability.

[0051] In one specific embodiment, the scraper conveyor lower chain track bottom plate 122 is fixedly connected to the head frame body 110 by welding. This design is simple to process and easy to operate.

[0052] In one specific embodiment, the scraper conveyor lower chain track bottom plate 122 and the head frame body 110 are integral structures. Compared with the post-processing method, it has better mechanical properties and higher connection strength, which helps to reduce the number of parts and improve assembly efficiency.

[0053] In one specific embodiment, the scraper conveyor lower chain track bottom plate 122 is detachably connected to the machine head frame body 110, which facilitates the disassembly and assembly of the scraper conveyor lower chain track bottom plate 122 by the staff, and is beneficial for maintenance or replacement.

[0054] In one specific embodiment, the bottom plate 320 of the lower chain conveyor of the transfer machine is fixedly connected to the head frame body 110 by welding. This design method is simple to process and helps to ensure the connection strength between the bottom plate 320 of the lower chain conveyor of the transfer machine and the head frame body 110.

[0055] like Figure 2 As shown, the upper conveyor plate 121 of the scraper conveyor, the upper conveyor plate 310 of the transfer conveyor, the lower conveyor plate 122 of the scraper conveyor, and the lower conveyor plate 320 of the transfer conveyor are arranged sequentially from top to bottom. An upper conveyor channel 123 is formed above the upper conveyor plate 121; an upper conveyor channel 124 is formed between the upper conveyor plate 121 and the upper conveyor plate 310; a lower conveyor channel 125 is formed between the upper conveyor plate 310 and the lower conveyor plate 122; and a lower conveyor channel 126 is formed between the lower conveyor plate 122 and the lower conveyor plate 320.

[0056] It should be noted that the upper chain conveyor plate 121 of the scraper conveyor, the upper chain conveyor plate 310 of the transfer conveyor, the lower chain conveyor bottom plate 122 of the scraper conveyor, and the lower chain conveyor bottom plate 320 of the transfer conveyor are arranged sequentially from top to bottom, forming a cross-distributed upper chain channel 123 of the scraper conveyor, upper chain channel 124 of the transfer conveyor, lower chain channel 125 of the scraper conveyor, and lower chain channel 126 of the transfer conveyor. Materials can pass through the upper chain channel 123 of the scraper conveyor, the upper chain channel 124 of the transfer conveyor, the lower chain channel 125 of the scraper conveyor, and the lower chain channel 126 of the transfer conveyor in sequence.

[0057] Optionally, the upper chain channel 123 of the scraper conveyor is connected to the upper chain channel 124 of the transfer conveyor; the upper chain channel 124 of the transfer conveyor is connected to the lower chain channel 125 of the scraper conveyor; and the lower chain channel 125 of the scraper conveyor is connected to the lower chain channel 126 of the transfer conveyor through the coal return hole 131.

[0058] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the bottom plate 122 of the scraper conveyor's lower chain conveyor is provided with multiple coal return holes 131, and each coal return hole 131 is provided with a corresponding blocking plate 140. The blocking plate 140 and the coal return hole 131 are detachably connected. When the blocking plate 140 and the coal return hole 131 are connected, the blocking plate 140 is used to block the corresponding coal return hole 131.

[0059] Optionally, the blocking plate 140 and the coal return hole 131 adopt a rotatable locking mechanical connection structure to achieve a detachable connection between the blocking plate 140 and the coal return hole 131. After the blocking plate 140 is placed in the coal return hole 131, by rotating the blocking plate 140 to a certain angle, the blocking plate 140 and the coal return hole 131 can be mechanically locked, preventing the blocking plate 140 from disengaging from the coal return hole 131. At this time, the blocking plate 140 can block the coal return hole 131. When it is necessary to open the coal return hole 131, the blocking plate 140 is rotated to another angle, releasing the mechanical lock between the blocking plate 140 and the coal return hole 131. At this time, the worker can remove the blocking plate 140 from the coal return hole 131.

[0060] Optionally, the outer wall of the blocking plate 140 is provided with external threads, and the inner wall of the coal return hole 131 is provided with internal threads. The blocking plate 140 and the coal return hole 131 are detachably connected by a threaded connection, which is simple in structure and easy to process.

[0061] Optionally, a baffle is provided at the bottom of the coal return hole 131. After the blocking plate 140 is placed in the coal return hole 131, the outer wall of the blocking plate 140 abuts against the hole wall of the coal return hole 131, and the baffle can support the blocking plate 140 to achieve a detachable connection between the blocking plate 140 and the coal return hole 131.

[0062] In one specific embodiment, multiple coal return holes 131 are asymmetrically distributed on the bottom plate 122 of the scraper conveyor lower chain track, covering the middle and side areas of the bottom plate 122 of the scraper conveyor lower chain track.

[0063] In one specific embodiment, a plurality of coal return holes 131 are distributed in a rectangular array on the bottom plate 122 of the scraper conveyor lower chain track, covering the middle and side areas of the bottom plate 122 of the scraper conveyor lower chain track.

[0064] It should be noted that since there are multiple coal return holes 131, and each coal return hole 131 is equipped with a corresponding blocking plate 140, multi-level adjustment of the coal return amount can be achieved by removing or installing some blocking plates 140.

[0065] In one specific embodiment, a plurality of coal return holes 131 are arranged in three rows on the bottom plate 122 of the scraper conveyor lower chain conveyor; each row has at least three coal return holes 131. In each row of coal return holes 131, the diameter D1 of at least three coal return holes 131 increases or decreases sequentially.

[0066] Specifically, in each row of coal return holes 131, at least one coal return hole 131 has a diameter D1 of 120 mm, at least one coal return hole 131 has a diameter D1 of 170 mm, and at least one coal return hole 131 has a diameter D1 of 220 mm. The radial dimension of the blocking plate 140 is adapted to the diameter D1 of the coal return hole 131.

[0067] When the utilization rate of the transfer machine is high and there is no coal accumulation on the lower chain channel 125 of the scraper conveyor, it is necessary to increase the number of blocking plates 140 to reduce the overall opening of multiple coal return holes 131 and balance the power load of the scraper conveyor 200 and the transfer machine 300.

[0068] In one specific embodiment, when the utilization rate of the transfer machine power is greater than 80% and there is no coal accumulation on the scraper conveyor lower chain channel 125, it is necessary to increase the number of blocking plates 140 to reduce the overall opening of multiple coal return holes 131 and balance the power load of scraper conveyor 200 and transfer machine 300.

[0069] When the scraper conveyor has a high power utilization rate and the lower chain channel 126 of the transfer machine has an idle load margin, it is necessary to reduce the number of blocking plates 140 in order to increase the overall opening of multiple coal return holes 131 and balance the power load of the scraper conveyor 200 and the transfer machine 300.

[0070] In one specific embodiment, when the scraper conveyor power utilization rate is greater than 80% and the lower chain channel 126 of the transfer machine has no-load margin, it is necessary to reduce the number of blocking plates 140 in order to increase the overall opening of multiple coal return holes 131 and balance the power load of the scraper conveyor 200 and the transfer machine 300.

[0071] In the technical solution defined by this utility model, firstly, each coal return hole 131 is provided with a corresponding blocking plate 140, and the blocking plate 140 is detachably connected to the coal return hole 131. This design allows workers to flexibly disassemble and install the blocking plate 140, adjust the overall opening of multiple coal return holes 131, thereby achieving multi-level adjustment of the coal return volume and solving the problem of power imbalance. Secondly, workers can disassemble or replace the blocking plate 140 in a short time (usually no more than 10 minutes), which helps to reduce downtime and improve work efficiency. Thirdly, the modular design helps to reduce maintenance costs and extend the service life of the equipment.

[0072] It should be noted that the cross-side unloading head frame 100 of this utility model integrates the upper and lower chain tracks of the scraper conveyor 200 (the upper chain track middle plate 121 and the lower chain track bottom plate 122) and the upper and lower chain tracks of the transfer machine 300 (the upper chain track middle plate 310 and the lower chain track bottom plate 320). Through a three-dimensional cross layout, four independent coal flow channels are formed (the upper chain track 123 of the scraper conveyor, the upper chain track 124 of the transfer machine, the lower chain track 125 of the scraper conveyor, and the lower chain track 126 of the transfer machine), so that the material can flow orderly between the chain tracks at different heights and directions, avoiding the blockage problem caused by spatial interference in traditional straight-line transportation.

[0073] In some embodiments, optionally, such as Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the wall of the coal return hole 131 is provided with a wing plate 132. The blocking plate 140 is a cylinder, and an annular groove 141 is provided on the circumferential side wall of the blocking plate 140. The bottom of the blocking plate 140 is provided with a clearance notch 142, which communicates with the annular groove 141. During the process of the blocking plate 140 extending into the coal return hole 131, the wing plate 132 enters into the annular groove 141 through the clearance notch 142, and the wing plate 132 is used to abut against the groove wall of the annular groove 141.

[0074] In one specific embodiment, the wall of the coal return hole 131 is fixedly connected to the wing plate 132 by welding. This design is simple to process and easy to operate.

[0075] In one specific embodiment, the wall of the coal return hole 131 and the wing plate 132 are integral structures. Compared with the post-processing method, it has better mechanical properties and higher connection strength, which helps to reduce the number of parts and improve assembly efficiency.

[0076] The wall of the coal return hole 131 extends outward to form a wing plate 132, which is a fan-shaped protrusion. The blocking plate 140 is a cylinder with an annular groove 141 machined on its circumferential sidewall. The annular groove 141 surrounds the blocking plate 140 along its axis, and its depth matches the thickness of the wing plate 132. A clearance notch 142 is provided at the bottom of the blocking plate 140. The clearance notch 142 is a fan-shaped or rectangular groove, one end of which communicates with the annular groove 141, and the other end extends to the bottom end face of the blocking plate 140, forming a guide channel for the insertion of the wing plate 132.

[0077] After the blocking plate 140 is inserted into the coal return hole 131, mechanical locking can be achieved by rotating the blocking plate 140 (the upper and lower surfaces of the wing plate 132 abut against the wall of the annular groove 141), thus fixing the blocking plate 140 and the coal return hole 131 relatively. When it is necessary to remove the corresponding blocking plate 140, rotating the blocking plate 140 causes the wing plate 132 to disengage from the annular groove 141 through the clearance notch 142, thus achieving rapid separation of the blocking plate 140 and the coal return hole 131.

[0078] Specifically, when the blocking plate 140 needs to be inserted into the coal return hole 131, the clearance notch 142 of the blocking plate 140 is aligned with the wing plate 132, and the blocking plate 140 moves downward under the guidance of the clearance notch 142. After the wing plate 132 has completely entered the annular groove 141 through the clearance notch 142, the blocking plate 140 is rotated 90 degrees clockwise or counterclockwise. At this time, the upper surface of the wing plate 132 abuts against the upper wall of the annular groove 141, the lower surface of the wing plate 132 abuts against the lower wall of the annular groove 141, and the side of the wing plate 132 fits against the groove wall of the annular groove 141, forming a three-dimensional limit, ensuring that the blocking plate 140 cannot move axially or rotate circumferentially under the impact and vibration of coal.

[0079] When it is necessary to remove the blocking plate 140, rotate the blocking plate 140 so that the clearance notch 142 is aligned with the wing plate 132, at which point the staff can quickly remove the blocking plate 140.

[0080] The blocking plate 140 and the coal return hole 131 adopt a rotatable locking mechanical connection structure to achieve a detachable connection between the blocking plate 140 and the coal return hole 131. Through the rotatable engagement structure between the wing plate 132 and the annular groove 141, the blocking plate 140 forms a mechanical interlock with the coal return hole 131 after installation, preventing the blocking plate 140 from loosening and falling off due to coal flow impact or equipment vibration. Compared with the traditional bolt fixing method, locking can be achieved by rotation without additional tools, making operation convenient and more reliable.

[0081] After the plug plate 140 is inserted into the coal return hole 131, it only needs to be rotated 90 degrees to lock. To disassemble, simply rotate it in the opposite direction to release the limit. This design is simple to operate, helps to shorten the replacement time of the plug plate 140, significantly improves the maintenance efficiency of downhole equipment, and reduces downtime losses.

[0082] In some embodiments, optionally, such as Figure 6 As shown, the upper surface of the wing plate 132 is the upper limit surface 1321, and the lower surface of the wing plate 132 is the lower limit surface 1322. When the wing plate 132 is in the annular groove 141, rotating the blocking plate 140 allows the upper limit surface 1321 to abut against the groove wall of the annular groove 141, and the lower limit surface 1322 to abut against the groove wall of the annular groove 141.

[0083] When the blocking plate 140 is inserted into the coal return hole 131 and rotated until the wing plate 132 is completely inside the annular groove 141, the upper limit surface 1321 of the wing plate 132 is in close contact with the upper wall of the annular groove 141; the lower limit surface 1322 of the wing plate 132 is in close contact with the lower wall of the annular groove 141. This design can prevent the blocking plate 140 from moving along the axial direction (vertical direction), avoid the blocking plate 140 from loosening, falling off or sinking due to the impact of coal flow, and ensure the stability of the opening of the coal return hole 131.

[0084] It should be noted that while the upper and lower surfaces of the wing plate 132 abut against the upper and lower groove walls of the annular groove 141, the side of the wing plate 132 interlocks with the side wall of the annular groove 141 (for example, after rotating 90 degrees, it abuts vertically), preventing the blocking plate 140 from rotating around the axis, avoiding the blocking plate 140 from being unlocked due to misoperation or vibration, and ensuring the reliability of the adjustment state.

[0085] Furthermore, the planar contact limiting structure can evenly transfer the impact load of the coal flow to the head frame body 110, avoiding structural damage caused by single-point stress. Compared with traditional pin limiting or spring clips and other flexible connections, this rigid limiting structure can better withstand high-frequency vibrations and the impact of large pieces of coal and gangue underground, which helps to extend the service life of the equipment.

[0086] In some embodiments, optionally, such as Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the wing plate 132 is provided with a first through hole 1323. The blocking plate 140 is provided with a second through hole 143, which communicates with the annular groove 141.

[0087] When the blocking plate 140 needs to be inserted into the coal return hole 131, the clearance notch 142 of the blocking plate 140 is aligned with the flange 132, and the blocking plate 140 is moved downward under the guidance of the clearance notch 142. After the flange 132 has completely entered the annular groove 141 through the clearance notch 142, the blocking plate 140 is rotated so that the second through hole 143 of the blocking plate 140 is aligned with the first through hole 1323 of the flange 132.

[0088] The cross-side-discharge nose frame 100 also includes a cylindrical pin 151. With the wing plate 132 in the annular groove 141 and the second through hole 143 aligned with the first through hole 1323, the cylindrical pin 151 passes through the second through hole 143 and the first through hole 1323 to achieve a detachable connection between the end plate 140 and the wing plate 132.

[0089] By setting the cylindrical pin 151, firstly, it helps to improve the connection strength between the blocking plate 140 and the coal return hole 131 when they are connected, and largely prevents the blocking plate 140 from detaching from the coal return hole 131 during operation; secondly, it prevents the blocking plate 140 from rotating around the axis, avoids the blocking plate 140 from being unlocked due to misoperation or vibration, and ensures the reliability of the adjustment state.

[0090] It should be noted that the cylindrical pin 151 is a flexible cylindrical pin. In order to improve the efficiency of disassembly and assembly, when the staff needs to remove the blocking plate 140, the cylindrical pin 151 can be directly knocked out with a tool, so that the cylindrical pin 151 falls directly into the lower chain channel 126 of the transfer machine.

[0091] In some embodiments, optionally, such as Figure 7 and Figure 8 As shown, the blocking plate 140 is provided with a lifting hole 144, which is connected to the annular groove 141.

[0092] The purpose of setting the pry hole 144 is to provide a point of force application, so that the staff can insert the tool into the pry hole 144 to rotate the block plate 140, and avoid the block plate 140 from getting stuck and unable to rotate.

[0093] When inserting the plug plate 140, the lever principle can be used to reduce the torque required to manually rotate the plug plate 140 by inserting a pry bar into the pry hole 144 and rotating it. This is especially suitable for one-handed operation or operation while wearing gloves in environments such as damp underground mines or areas with high levels of coal dust. When rotated into place, the relative position of the pry hole 144 and the wing plate 132 can be quickly confirmed visually or by touch, improving installation efficiency.

[0094] When disassembling the blocking plate 140, insert a tool into the pry hole 144 and pry it in the unlocking direction. This overcomes the frictional resistance between the wing plate 132 and the annular groove 141, preventing jamming problems caused by long-term use. The pry hole 144 provides a point of force application, preventing workers from directly striking the end face of the blocking plate 140 or the edge of the annular groove 141, which could cause deformation and help extend the service life of the blocking plate 140 and the coal return hole 131.

[0095] In some embodiments, optionally, such as Figure 6 , Figure 7 and Figure 8 As shown, the plug plate 140 is provided with a disassembly threaded hole 145, which is used to screw in the bolt 152 to assist in the insertion and removal of the plug plate 140. The disassembly threaded hole 145 can be a through hole or a blind hole.

[0096] By providing a disassembly threaded hole 145 on the plug plate 140, it is convenient for workers to screw in the bolt 152 into the disassembly threaded hole 145, and to insert, remove or rotate the plug plate 140 by holding the bolt 152, which is easy to operate.

[0097] The process of quickly removing the block plate 140 is as follows: After confirming that the scraper conveyor (scraper conveyor 200) and the transfer machine 300 are stopped, open the skylight plate 153 on the middle plate 310 of the upper chain track of the transfer machine, screw the bolt 152 into the disassembly and assembly threaded hole 145 of the block plate 140 through the skylight hole 311, knock out the elastic cylindrical pin (cylindrical pin 151) that fixes the block plate 140, and then rotate the block plate 140 90 degrees through the pry hole 144, that is, the side positioning surface of the block plate 140 is parallel to the side positioning surface of the coal return hole 131. After releasing the mechanical lock, the block plate 140 can be removed.

[0098] The process of quickly installing the blocking plate 140 is as follows: With the scraper conveyor (scraper conveyor 200) and transfer conveyor 300 stopped, open the skylight plate 153 on the middle plate 310 of the upper chain track of the transfer conveyor, screw the bolt 152 into the disassembly and assembly threaded hole 145 of the blocking plate 140, and put the blocking plate 140 into the coal return hole 131 through the skylight hole 311. At this time, the side positioning surface of the blocking plate 140 (the side wall of the annular groove 141) is parallel to the side positioning surface of the coal return hole 131. Then, rotate the blocking plate 140 90 degrees through the pry hole 144, and then hammer in the elastic cylindrical pin (cylindrical pin 151). The upper and lower surfaces of the wing plate 132 abut against the upper and lower groove walls of the annular groove 141, restricting all degrees of freedom of the blocking plate 140. At this time, the installation of the blocking plate 140 is completed.

[0099] In some embodiments, optionally, such as Figure 1 As shown, the upper chain channel plate 310 of the transfer machine is provided with a skylight hole 311, which is connected to the lower chain channel 125 of the scraper conveyor.

[0100] Optionally, the cross-sectional shape of the skylight 311 is square, circular, or elliptical. The size of the skylight 311 is larger than the diameter D1 of the coal return hole 131, and the size of the skylight 311 is larger than the radial dimension of the blocking plate 140, ensuring that workers can observe or contact the interior of the scraper conveyor lower chain channel 125 through the skylight 311.

[0101] The cross-side unloading headframe 100 also includes a skylight plate 153. The skylight plate 153 is detachably connected to the skylight opening 311. When the skylight plate 153 and the skylight opening 311 are connected, the skylight plate 153 is used to block the skylight opening 311.

[0102] Optionally, the sunroof panel 153 and the sunroof hole 311 can be detachably connected by bolts, clips or other means, which makes it convenient for staff to disassemble and assemble the sunroof panel 153, and facilitates maintenance or replacement.

[0103] When the skylight plate 153 covers the skylight opening 311, its surface is flush with the upper surface of the middle plate 310 of the upper chain conveyor of the transfer machine, forming a continuous coal transportation plane. After the skylight plate 153 is removed, the skylight opening 311 is exposed, forming an operating window that leads directly to the lower chain channel 125 of the scraper conveyor, facilitating maintenance, observation, and adjustment by the staff.

[0104] Without disassembling a large number of parts, staff can directly observe the coal accumulation in the scraper conveyor's lower chain channel 125, the installation status of the blockage plate 140, and the chain's running trajectory through the skylight 311, quickly locating fault points such as chain jamming and coal blockage, and shortening downtime for troubleshooting.

[0105] When the block plate 140 assembly needs to be adjusted, there is no need to stop the machine and empty the coal in the chain conveyor. The operator can directly insert tools (such as wrenches or pry bars) through the skylight hole 311 and use the pry hole 144 and the disassembly and assembly threaded hole 145 to quickly rotate or insert and remove the block plate 140 to achieve dynamic adjustment under load and avoid the impact of frequent start-stop of the equipment on the transmission system.

[0106] In some embodiments, optionally, at least two coal return holes 131 have different apertures D1.

[0107] It should be noted that since there are multiple coal return holes 131, and each coal return hole 131 is equipped with a corresponding blocking plate 140, multi-level adjustment of the coal return amount can be achieved by removing or installing some blocking plates 140.

[0108] By setting the diameter D1 of at least two coal return holes 131 to be different, and matching the size of the block plate 140 with the diameter D1 of the coal return holes 131, this design method is conducive to the precise adjustment of the coal return amount, and effectively avoids the situation where there is no coal accumulation or excessive coal accumulation in the scraper after adjustment.

[0109] Optionally, each coal return hole 131 of the scraper conveyor lower chain track bottom plate 122 is equipped with a blocking plate 140 of different radial dimensions.

[0110] In some embodiments, optionally, such as Figure 9 As shown, the diameter D1 of the coal return hole 131 ranges from 120 mm to 260 mm.

[0111] By limiting the range of the diameter D1 of the coal return hole 131, firstly, the diameter D1 of a single coal return hole 131 is not too large, avoiding insufficient adjustment accuracy after disassembling and assembling the blocking plate 140, and also ensuring the structural strength of the bottom plate 122 of the scraper conveyor lower chain track; secondly, the diameter D1 of a single coal return hole 131 is not too small, avoiding difficulties in adjustment.

[0112] In one specific embodiment, the diameter D1 of at least one coal return hole 131 is 120 mm. The radial dimension of the blocking plate 140 is 120 mm.

[0113] In one specific embodiment, the diameter D1 of at least one coal return hole 131 is 170 mm. The radial dimension of the plug plate 140 is 170 mm.

[0114] In one specific embodiment, the diameter D1 of at least one coal return hole 131 is 230 mm. The radial dimension of the blocking plate 140 is 230 mm.

[0115] In one specific embodiment, the diameter D1 of at least one coal return hole 131 is 260 mm. The radial dimension of the blocking plate 140 is 260 mm.

[0116] In one specific embodiment, the diameter D1 of the coal return hole 131 has three types: 120mm, 170mm, and 230mm. By combining the three corresponding radially sized blocking plates 140, multi-level adjustment (stepped adjustment) of the coal return amount of 30%, 60%, and 100% can be achieved; the power load of the scraper conveyor and transfer conveyor 300 can be balanced, and the effect of manual cleaning of the coal return can be reduced.

[0117] In some embodiments, the movable center plate 121 of the scraper conveyor upper chain track is optionally detachably connected to the head frame body 110, which facilitates the disassembly and assembly of the movable center plate 121 by the operator, and is beneficial for maintenance or replacement. During maintenance, the operator can quickly disassemble and assemble the movable center plate (movable center plate 121 of the scraper conveyor upper chain track) to expose the internal chain track (such as the scraper conveyor upper chain channel 123).

[0118] In one specific embodiment, the upper conveyor plate 121 of the scraper conveyor is detachably connected to the head frame body 110 via a pin. This design features a simple connection structure and is easy to operate.

[0119] In one specific embodiment, the upper conveyor plate 121 of the scraper conveyor is detachably connected to the head frame body 110 by screws. This design method results in a simple connection structure and is easy to operate.

[0120] The detachable design of the movable center plate 121 on the scraper conveyor's upper chain path allows workers to quickly inspect and repair chain wear, loose connecting rings, and other faults without disassembling the entire scraper chain or other auxiliary components. The movable center plate (movable center plate 121 on the scraper conveyor's upper chain path) is an independent module and can be disassembled and replaced separately. When the movable center plate becomes dented or deformed due to long-term wear, only this component needs to be replaced; there is no need to replace the entire head frame (cross-side discharge head frame 100), which helps reduce spare parts procurement costs and inventory pressure.

[0121] In one embodiment of this utility model, such as Figure 10As shown, the scraper conveyor 200 includes the cross-side discharge head frame 100 of any of the above embodiments. The cross-side discharge head frame 100 is used to connect to the transfer machine 300.

[0122] It should be noted that the cross-side-discharge headstock 100 is part of the scraper conveyor 200. In the fully mechanized mining face, the cross-side-discharge headstock 100 is used to transfer materials between the scraper conveyor 200 and the transfer conveyor 300. Optionally, the material is coal.

[0123] Optionally, the transfer machine 300 is a roadway transfer machine. A roadway transfer machine is an intermediate transfer device installed in the roadway (arranged along the coal seam direction) of a fully mechanized coal mining face, used to receive materials unloaded by the scraper conveyor 200, and to transfer the materials to the belt conveyor (belt conveyor) through its own scraper chain drive system.

[0124] The cross-side discharge headstock 100 is used to unload materials from the scraper conveyor's lower chain channel 125 through the coal return hole 131 to the transfer conveyor's lower chain channel 126. The scraper chain of the transfer conveyor 300 drives the material to move towards the tail of the machine, and finally unloads it onto the belt conveyor, completing the transfer transportation.

[0125] Since the scraper conveyor 200 includes the cross-side discharge head frame 100 in any of the above embodiments, it has the beneficial effects of any of the above embodiments, which will not be repeated here.

[0126] Optionally, such as Figure 10 As shown, the scraper conveyor 200 also includes a scraper chain assembly 210, which is connected to the cross-side discharge head frame 100. The scraper chain assembly 210 is the traction component of the scraper conveyor 200, consisting of scrapers and a circular link chain. The circular link chain is connected end-to-end through connecting rings to form a closed loop structure, and the scrapers are fixed to the circular link chain at certain intervals. Driven by the sprocket, the scraper chain assembly 210 performs continuous cyclical motion within the central trough, and the scrapers push the coal forward along the central trough, thereby realizing the transportation of coal.

[0127] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0128] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0129] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0130] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cross side discharge headstock characterized by, For connecting a transfer machine, the transfer machine includes an upper chain track center plate (310) and a lower chain track bottom plate (320); the cross-side unloading head frame includes: The head frame body (110) is connected to the upper chain track middle plate (310) of the transfer machine and the lower chain track bottom plate (320) of the transfer machine; The scraper conveyor upper chain track movable middle plate (121) is connected to the machine head frame body (110); The bottom plate (122) of the scraper conveyor lower chain track is connected to the head frame body (110); The upper chain track plate (121) of the scraper conveyor, the upper chain track plate (310) of the transfer machine, the lower chain track bottom plate (122) of the scraper conveyor, and the lower chain track bottom plate (320) of the transfer machine are arranged sequentially from top to bottom; A scraper conveyor upper chain channel (123) is formed above the movable middle plate (121) of the upper chain conveyor of the scraper conveyor; a transfer machine upper chain channel (124) is formed between the movable middle plate (121) of the upper chain conveyor of the scraper conveyor and the middle plate (310) of the upper chain conveyor of the transfer machine; a scraper conveyor lower chain channel (125) is formed between the middle plate (310) of the upper chain conveyor of the transfer machine and the bottom plate (122) of the lower chain conveyor of the scraper conveyor; a transfer machine lower chain channel (126) is formed between the bottom plate (122) of the lower chain conveyor of the scraper conveyor and the bottom plate (320) of the lower chain conveyor of the transfer machine. The scraper conveyor lower chain track bottom plate (122) is provided with a plurality of coal return holes (131), each of the coal return holes (131) is provided with a corresponding blocking plate (140), the blocking plate (140) and the coal return hole (131) are detachably connected; when the blocking plate (140) and the coal return hole (131) are in the connected state, the blocking plate (140) is used to block the coal return hole (131).

2. The cross-side offloading headstock of claim 1, wherein, The wall of the coal return hole (131) is provided with a wing plate (132); The blocking plate (140) is a cylinder, and an annular groove (141) is provided on the circumferential side wall of the blocking plate (140). A clearance notch (142) is provided at the bottom of the blocking plate (140), and the clearance notch (142) communicates with the annular groove (141). As the blocking plate (140) extends into the coal return hole (131), the wing plate (132) enters the annular groove (141) through the clearance notch (142), and the wing plate (132) is used to abut against the groove wall of the annular groove (141).

3. The cross-side offloading headstock of claim 2, wherein, The upper surface of the wing plate (132) is the upper limit surface (1321), and the lower surface of the wing plate (132) is the lower limit surface (1322). When the wing plate (132) is in the annular groove (141), the blocking plate (140) is rotated, and the upper limit surface (1321) abuts against the groove wall of the annular groove (141), and the lower limit surface (1322) abuts against the groove wall of the annular groove (141).

4. The cross-side offloading headstock of claim 2, wherein, The wing plate (132) is provided with a first through hole (1323); the blocking plate (140) is provided with a second through hole (143), and the second through hole (143) communicates with the annular groove (141); The cross-side unloading head frame also includes: A cylindrical pin (151) passes through the second through hole (143) and the first through hole (1323) when the wing plate (132) is in the annular groove (141) to achieve a detachable connection between the plug plate (140) and the wing plate (132).

5. The cross-side offloading headstock of claim 2, wherein, The blocking plate (140) is provided with a protruding hole (144), which is connected to the annular groove (141).

6. The cross-side offloading headstock of claim 2, wherein, The plug plate (140) is provided with a disassembly threaded hole (145), which is used to screw in a bolt (152) to assist in the insertion and removal operation of the plug plate (140); the disassembly threaded hole (145) is a through hole structure or a blind hole structure.

7. The cross-side offloading headstock of any one of claims 1 to 6, wherein, The transfer machine upper chain channel plate (310) is provided with a skylight hole (311), which is connected to the scraper conveyor lower chain channel (125); The cross-side unloading head frame also includes: The sunroof panel (153) is detachably connected to the sunroof hole (311); when the sunroof panel (153) and the sunroof hole (311) are connected, the sunroof panel (153) is used to block the sunroof hole (311).

8. The cross-side offloading headstock of any one of claims 1 to 6, wherein, At least two of the coal return holes (131) have different diameters; and / or the diameter of the coal return holes (131) is between 120 mm and 260 mm.

9. The cross-side offloading headstock of any one of claims 1 to 6, wherein, The upper chain conveyor plate (121) of the scraper conveyor is detachably connected to the head frame body (110).

10. An apron conveyor characterized in that include: The cross-side unloading head frame as described in any one of claims 1 to 9 is used to connect to a transfer machine.

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