A belt unloading device and belt conveyor

Abstract

This utility model relates to a discharge device for a belt conveyor and a belt conveyor, including a support frame, a telescopic discharge mechanism, and a material transport mechanism. The telescopic discharge mechanism includes a discharge hopper and a connecting unit. The discharge hopper telescopically moves and is used to receive and discharge materials. The connecting unit is disposed between the support frame and the discharge hopper and is used to realize the telescopic movement of the discharge hopper. The material transport mechanism includes a conveyor belt, a first transmission assembly, and a second transmission assembly. The conveyor belt is used to transport materials to the discharge hopper. The first transmission assembly is disposed on the discharge hopper, and the second transmission assembly is disposed on the support frame. The conveyor belt is disposed on the support frame, the first transmission assembly, and the second transmission assembly. The second transmission assembly can automatically adjust the tension of the conveyor belt according to its operating state. The telescopic movement of the discharge hopper allows it to switch between different discharge states, and the length and tension of the conveyor belt can also be adjusted in a timely manner.

Description

Technical Field

[0001] This utility model relates to the technical field of mining belt conveyors, specifically to a material unloading device for a belt conveyor and a belt conveyor. Background Technology

[0002] Full-face rock tunnel boring machines (MTBGs) are used to excavate rock tunnels during tunnel construction, and their associated belt conveyor muck removal system is one of the key pieces of equipment to ensure efficient muck removal. In actual construction, existing muck removal systems continuously unload materials from the unloading hopper on the front belt conveyor to the rear belt conveyor of the muck removal system, and then the rear belt conveyor transports the materials to the muck truck to be transported outside the tunnel.

[0003] Currently, the unloading hoppers on belt conveyors are often fixed on the belt conveyor, making it difficult to achieve the transition between different unloading states. For example, it is difficult to achieve the transition between different unloading states during the tunneling process, such as unloading materials to the bottom of the tunnel for lining and unloading materials to the subsequent belt conveyor, which requires secondary lining and shotcrete for the tunnel bottom. Summary of the Invention

[0004] In view of this, the present invention provides a material unloading device for a belt conveyor and a belt conveyor, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0005] To achieve the aforementioned objective, the first aspect of this utility model provides a discharge device for a belt conveyor, the discharge device comprising:

[0006] support;

[0007] A telescopic unloading mechanism includes an unloading hopper and a connecting unit. The unloading hopper moves telescopically along the length of the support and is used to receive and unload materials. The connecting unit is disposed between the support and the unloading hopper and is used to realize the telescopic movement of the unloading hopper.

[0008] The material transport mechanism includes a conveyor belt, a first transmission assembly, and a second transmission assembly. The conveyor belt is used to transport materials to the unloading hopper. The first transmission assembly is disposed on the unloading hopper, and the second transmission assembly is disposed on the support. The conveyor belt is disposed on the support, the first transmission assembly, and the second transmission assembly, respectively. The second transmission assembly can automatically adjust the tension of the conveyor belt according to the operating status of the conveyor belt.

[0009] In the aforementioned unloading device for belt conveyors, optionally, the connecting unit includes a sluice groove disposed on the support along the length direction of the support and a slide rail inserted in the sluice groove and slidably connected to the sluice groove along the length direction of the sluice groove, the slide rail also being connected to the unloading hopper.

[0010] Optionally, the connecting unit further includes a first hydraulic cylinder, one end of which is connected to the unloading hopper or slide rail, and the other end of which is connected to the bracket;

[0011] The first hydraulic cylinder is capable of telescopic movement and has extended and retracted states. When the first hydraulic cylinder is in the extended state, the unloading hopper is located in a first position that allows the material to be in a first unloading state. When the first hydraulic cylinder is in the retracted state, the unloading hopper is located in a second position that allows the material to be in a second unloading state. The first unloading state and the second unloading state are different unloading states.

[0012] Optionally, the unloading hopper is located behind the support. When the unloading hopper is in the first position, it is located away from the support; when the unloading hopper is in the second position, it is located close to the support.

[0013] Optionally, the connecting units are respectively provided on opposite sides of the unloading hopper, and each connecting unit includes the chute, the slide rail and the first hydraulic cylinder.

[0014] In the aforementioned unloading device for belt conveyors, optionally, the first transmission assembly includes an unloading roller and a first redirecting roller respectively spaced apart on the unloading hopper;

[0015] The second transmission assembly includes a sliding roller unit, a second redirecting roller and a second hydraulic cylinder disposed on the bracket. The sliding roller unit includes a sliding seat movably disposed on the bracket along the length direction of the bracket and a sliding roller disposed on the sliding seat.

[0016] The conveyor belt is arranged to pass around the unloading roller, the first redirecting roller, the sliding roller and the second redirecting roller in sequence. The second hydraulic cylinder is connected between the bracket and the sliding seat. The second hydraulic cylinder can perform telescopic movement, thereby driving the sliding roller unit to move on the bracket, thereby adjusting the tension of the conveyor belt.

[0017] Optionally, the support includes a first support, a second support disposed below the first support, and a connecting frame connected between the first support and the second support. The sliding roller unit is movably disposed on the second support. The second hydraulic cylinder is connected between the second support and the sliding seat. The connecting unit is disposed between the first support and the unloading hopper.

[0018] The second transmission assembly further includes a fixed roller disposed on the connecting frame, the second redirecting roller disposed at the bottom of the first support, the fixed roller disposed between the first redirecting roller and the sliding roller, and the conveyor belt also passing around the fixed roller.

[0019] Optionally, rollers are provided on opposite sides of the sliding seat, and fixed tracks are respectively provided on the second bracket along the length direction of the bracket corresponding to the positions of the rollers, and the rollers are rotatably mounted on the fixed tracks on the corresponding sides.

[0020] Optionally, in the aforementioned unloading device for belt conveyors, the telescopic unloading mechanism further includes a primary cleaning scraper and a secondary cleaning scraper disposed on the unloading hopper and located below the unloading drum. The primary cleaning scraper and the secondary cleaning scraper are spaced apart and are used to remove material adhering to the conveyor belt.

[0021] Optionally, in the aforementioned unloading device for belt conveyors, the bottom of the unloading hopper is provided with a discharge port.

[0022] To achieve the aforementioned objective, a second aspect of this utility model provides a belt conveyor, including the unloading device as described above, wherein the belt conveyor employs a trough-type idler group.

[0023] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0024] The unloading device of this utility model realizes the telescopic movement of the unloading hopper through the connecting unit, so that it can switch between different unloading states. During the switching process, the length and tension of the conveyor belt can also be adjusted in time. While achieving seamless connection between different unloading states of the unloading hopper, the tension of the belt conveyor is kept stable, slippage is avoided, and construction efficiency is improved. Attached Figure Description

[0025] The disclosure of this utility model will become more apparent from the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0026] Figure 1 and Figure 2 This is a three-dimensional structural diagram of the unloading device according to an embodiment of the present invention from different perspectives (the unloading hopper is in the first position).

[0027] Figure 3 for Figure 1 Side view of the unloading device;

[0028] Figure 4 and Figure 5This is a three-dimensional structural diagram of the unloading device according to an embodiment of the present invention from different perspectives (the unloading hopper is in the second position).

[0029] Figure 6 for Figure 4 Side view of the unloading device;

[0030] Figure 7 for Figure 1 A schematic diagram of the sliding roller unit of the unloading device;

[0031] In the picture:

[0032] 1. First support; 2. Connecting frame; 3. Second support; 4. Unloading hopper; 4a. Unloading port; 5. Slide rail; 6. Conveyor belt; 7. First hydraulic cylinder; 8. Second hydraulic cylinder; 9. Unloading roller; 10. First redirecting roller; 11. Sliding roller unit; 11a. Sliding seat; 11b. Sliding roller; 11c. Roller; 12. Second redirecting roller; 13. Fixed roller; 14. First slag cleaning scraper; 15. Second slag cleaning scraper. Detailed Implementation

[0033] Referring to the accompanying drawings and specific embodiments, the structure, composition, features, and advantages of the unloading device for belt conveyors of this utility model will be described below by way of example. However, all descriptions should not be construed as limiting the present utility model in any way.

[0034] Furthermore, for any single technical feature described or implied in the embodiments submitted herein, or any single technical feature shown or implied in the various drawings, the present invention still operates by making any combination or deletion of these technical features or their equivalents without any technical obstacle. Therefore, it should be considered that these further embodiments according to the present invention are also within the scope of the description herein.

[0035] In this application, "front" refers to the tunneling direction of the tunneling machine, and "rear" refers to the opposite direction. For example, the "front end" of a component faces the tunneling direction relative to its "rear end." "Left" and "right" are defined based on the viewpoint of an observer located inside the tunneling machine, facing the tunneling direction, as shown in [reference needed]. Figure 3 .

[0036] Figure 1 and Figure 2 The diagram shows a three-dimensional structural schematic diagram of a conveyor belt unloading device according to an embodiment of the present invention from different perspectives, and the diagram shows the unloading hopper in the first position. Figure 3 for Figure 1 Side view of the unloading device. Figure 4 and Figure 5 This is a three-dimensional structural diagram of the unloading device from different perspectives, and the diagram shows the unloading hopper in the second position. Figure 6 for Figure 4 Side view of the unloading device. Figure 7 A schematic diagram of the sliding roller unit is shown.

[0037] Depend on Figure 1 and Figure 2 As can be seen, the unloading device for the belt conveyor includes a bracket, which is used to provide support for the telescopic unloading mechanism and the material conveying mechanism. The bracket includes a first bracket 1, a second bracket 3 disposed below the first bracket 1, and a connecting frame 2 connecting the first bracket 1 and the second bracket 3.

[0038] In some alternative embodiments, the belt conveyor employs trough idler groups, with multiple trough idler groups arranged along the length of the first support 1 to support the conveyor belt.

[0039] The unloading device for this belt conveyor also includes a telescopic unloading mechanism.

[0040] like Figures 1-6 The telescopic unloading mechanism includes an unloading hopper 4 and a connecting unit. The bottom of the unloading hopper 4 is provided with an unloading port 4a. The unloading hopper 4 is used to receive materials and unload them. The unloading hopper 4 can telescopically move along the length of the support. In an optional embodiment, the unloading hopper 4 can be telescopically connected to the tail end of the first support 1 through the connecting unit, and the connecting unit is used to realize the telescopic movement of the unloading hopper 4.

[0041] The connecting unit includes a slide groove arranged on the first support 1 along the length direction of the support, a slide rail 5 inserted in the slide groove and slidably connected to the slide groove along the length direction of the slide groove, and a first hydraulic cylinder 7. The unloading hopper 4 is connected to the rear end of the slide rail 5. The first hydraulic cylinder 7 extends along the length direction of the first support 1, and the two ends of the first hydraulic cylinder 7 are connected between the first support 1 and the unloading hopper 4.

[0042] To ensure stable telescopic movement of the unloading hopper 4, connecting units are provided on opposite sides of the unloading hopper 4. Each connecting unit includes a slide groove, a slide rail 5, and a first hydraulic cylinder 7. The first hydraulic cylinder 7 on each side is capable of telescopic movement and has extended and retracted states. When the first hydraulic cylinder 7 is in the extended state, the unloading hopper 4 is located in a first position allowing material to be in the first unloading state (e.g., ...). Figures 1-3 When the first hydraulic cylinder 7 is in the retracted state, the unloading hopper 4 is in the second position that allows the material to be in the second unloading state (e.g., Figures 4-6 The first unloading state and the second unloading state are different unloading states. For example, the first unloading state is the continuous unloading state of the slag discharge conveyor belt in the later stage, and the second unloading state is the unloading state adapted to the bottom slag discharge in the roadway.

[0043] In this example, the unloading hopper 4 is located behind the first support 1. When the unloading hopper 4 is in the first position, it is located away from the first support 1; when the unloading hopper 4 is in the second position, it is located close to the first support 1.

[0044] In actual construction, material is continuously unloaded from the front conveyor belt to the rear slag discharge conveyor belt, and then transported to the outside of the roadway by the rear slag discharge conveyor belt. During the material transport process of the front conveyor belt, a portion of the material needs to be unloaded in advance for roadway paving. In this condition, if the front conveyor belt continuously unloads material to the rear slag discharge conveyor belt, and the rear slag discharge conveyor belt transports the material out of the slag car and to the outside of the roadway, then the first hydraulic cylinder 7 extends, positioning the unloading hopper 4 away from the first support 1. Figures 1-3 As shown, this allows the unloading hopper 4 to unload material onto the downstream slag discharge conveyor belt; however, if bottom lining is required, unloading must be done in advance, the first hydraulic cylinder 7 retracts, driving the unloading hopper 4 to retract, so that the unloading hopper 4 is positioned close to the first support 1, as shown. Figures 4-6 As shown, the unloading hopper 4 discharges material to the bottom of the tunnel in advance for lining. In this way, the unloading hopper 4 is driven by the first hydraulic cylinder 7 to perform telescopic movement, realizing the switching between the first position and the second position of the unloading hopper, thereby achieving a seamless connection between continuous unloading to the subsequent slag discharge conveyor and pre-unloading for lining.

[0045] To enable the unloading hopper 4 to telescopically move and achieve seamless connection between continuous unloading to the downstream slag discharge conveyor and pre-unloading and bottom laying, the unloading device also includes a material transport mechanism. The material transport mechanism includes a conveyor belt, a first transmission component, and a second transmission component. The conveyor belt is used to transport materials to the unloading hopper. The first transmission component is installed on the unloading hopper, and the second transmission component is installed on the support. The conveyor belt is installed on the support, the first transmission component, and the second transmission component, respectively. The second transmission component can automatically adjust the tension of the conveyor belt according to the operating status of the conveyor belt.

[0046] See Figure 3 and Figure 6 The first transmission assembly includes a discharge roller 9 and a first redirecting roller 10 respectively spaced on the discharge hopper 4. The discharge roller 9 is located inside the discharge hopper 4, and the first redirecting roller 10 is located in front of the discharge roller 9.

[0047] The second transmission assembly includes a sliding roller unit 11, a second redirecting roller 12 disposed at the bottom of the first bracket 1, a fixed roller 13 disposed on the connecting frame 2, a sliding roller 11b, and a second hydraulic cylinder 8. The fixed roller 13 is located between the sliding roller 11b and the first redirecting roller 10.

[0048] See Figure 7 The sliding roller unit 11 includes a sliding seat 11a and a sliding roller 11b disposed on the sliding seat 11a. See also... Figure 3 and Figure 6 The sliding seat 11a is movably mounted on the second support 3 along the length direction of the second support 3. In order to reduce the friction between the sliding seat 11a and the second support 3, rollers 11c are provided on opposite sides of the sliding seat 11a. Fixed tracks extending along the length direction of the second support 3 are respectively provided on the second support 3 at the positions corresponding to the rollers 11c. The rollers 11c are rolled on the fixed tracks on the corresponding sides. In an optional embodiment, rollers 11c are respectively provided at the front and rear parts of the left and right sides of the sliding seat 11a, and the axle of each roller 11c extends along the left and right sides of the belt conveyor.

[0049] Figure 3 and Figure 6 The dotted line in the figure represents the conveyor belt. As can be seen from the figure, the winding path of the conveyor belt 6 passes through the unloading roller 9, the first redirecting roller 10, the fixed roller 13, the sliding roller 11b, and the second redirecting roller 12 in sequence. The running direction of the conveyor belt 6 changes after passing through the first redirecting roller 10, the sliding roller 11b, and the second redirecting roller 12.

[0050] The second hydraulic cylinder 8 extends along the length of the second support 3 and connects the second support 3 and the sliding seat 11a. Optionally, a connecting seat is fixedly installed in the middle of the second support 3 and in front of the sliding seat 11a. The body of the second hydraulic cylinder 8 is connected to the connecting seat, and the piston of the second hydraulic cylinder 8 is connected to the middle of the sliding seat 11a. The extension and retraction of the second hydraulic cylinder 8 drives the sliding seat 11a to move back and forth on the second support 3, thereby adjusting the length of a portion of the conveyor belt between the first support 1 and the unloading roller 9, such as when the unloading hopper 4 is in the first position (e.g.) Figure 3 ), and when the unloading hopper 4 is in the second position (such as Figure 6 The length of the conveyor belt between the first support 1 and the unloading roller 9 is variable. At the same time, the second hydraulic cylinder 8 can ensure that the conveyor belt is always in a suitable tension state during the change of the length of this part of the conveyor belt, so as to ensure the tension of the belt conveyor is stable, avoid the conveyor belt slippage, and improve construction efficiency.

[0051] To prevent material residue from remaining on the conveyor belt after unloading, such as Figure 2 and Figure 5 The telescopic unloading mechanism also includes a primary cleaning scraper 14 and a secondary cleaning scraper 15 disposed on the unloading hopper 4 and located below the unloading drum 9. The primary cleaning scraper 14 and the secondary cleaning scraper 15 are spaced apart and used to remove material adhering to the conveyor belt 6.

[0052] In some alternative embodiments, the discharge hopper 4 may include a discharge hopper frame and a plurality of side plates surrounding the discharge hopper frame, see [reference]. Figure 1 and Figure 4The three sides of the unloading hopper frame are surrounded by side plates, the unloading roller 9 is set on the unloading hopper frame, and the bottom of the three side plates forms the unloading port 4a.

[0053] The first cylinder 7 and the second cylinder 8 of the unloading device are controlled by a control system. The control system automatically adjusts the extension and retraction lengths of the first cylinder and the second cylinder according to the material conveying situation, so as to realize the automated operation of the unloading device.

[0054] In some alternative embodiments, the belt conveyor including the unloading device adopts a trough idler group, which is arranged on the first support 1 along the length direction of the first support 1. In alternative embodiments, the connecting unit may also be provided with a trough idler group, and the conveyor belt is wound around the unloading drum 9 after passing through the trough idler group.

[0055] When the belt conveyor using this unloading device is used in specific construction, when the belt conveyor is continuously unloading material to the slag discharge belt conveyor at the end, the first hydraulic cylinder 7 extends by one stroke, and the unloading hopper 4 extends backward, driving the unloading roller 9 and the first redirecting roller 10 to move backward. This, in turn, causes the portion of the conveyor belt between the first support 1 and the unloading roller 9 to lengthen. At this time, the second hydraulic cylinder 8 extends in coordination, tensioning the conveyor belt to prevent slippage. During this process, the fixed roller and the second redirecting roller remain fixed in their original positions, thereby achieving the redirection of the conveyor belt and ultimately achieving the desired result. Figure 3 The state shown is the continuous slag discharge and unloading state of the subsequent slag discharge conveyor. The material is unloaded to the subsequent slag discharge conveyor and transported to the outside of the roadway through this conveyor.

[0056] When the first hydraulic cylinder 7 and the second hydraulic cylinder 8 retract in tandem, they drive the unloading hopper 4 to retract forward, causing the unloading roller 9 and the first redirecting roller 10 to move forward. This, in turn, shortens the portion of the conveyor belt between the first support 1 and the unloading roller 9, while simultaneously tensioning the conveyor belt, ultimately achieving the desired effect. Figure 6 The state shown is for unloading material at the bottom of the tunnel. The material is unloaded to the bottom of the tunnel by the belt conveyor for tunnel paving.

[0057] In addition, in the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to mechanical connection or electrical connection, or the internal connection of two components. They can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0058] The above embodiments are only used to illustrate the present utility model, and are not intended to limit the present utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also fall within the scope of the present utility model. The patent protection scope of the present utility model should be defined by the claims.

Claims

1. A discharge device for a belt conveyor, characterized in that, The unloading device includes: support; A telescopic unloading mechanism includes an unloading hopper and a connecting unit. The unloading hopper moves telescopically along the length of the support and is used to receive and unload materials. The connecting unit is disposed between the support and the unloading hopper and is used to realize the telescopic movement of the unloading hopper. The material transport mechanism includes a conveyor belt, a first transmission assembly, and a second transmission assembly. The conveyor belt is used to transport materials to the unloading hopper. The first transmission assembly is disposed on the unloading hopper, and the second transmission assembly is disposed on the support. The conveyor belt is disposed on the support, the first transmission assembly, and the second transmission assembly, respectively. The second transmission assembly can automatically adjust the tension of the conveyor belt according to the operating status of the conveyor belt.

2. The unloading device for a belt conveyor according to claim 1, characterized in that, The connecting unit includes a slide groove disposed on the support along the length direction of the support and a slide rail inserted in the slide groove and slidably connected to the slide groove along the length direction of the slide groove. The slide rail is also connected to the unloading hopper.

3. The unloading device for a belt conveyor according to claim 2, characterized in that, The connecting unit also includes a first hydraulic cylinder, one end of which is connected to the unloading hopper or slide rail, and the other end is connected to the bracket. The first hydraulic cylinder is capable of telescopic movement and has extended and retracted states. When the first hydraulic cylinder is in the extended state, the unloading hopper is located in a first position that allows the material to be in a first unloading state. When the first hydraulic cylinder is in the retracted state, the unloading hopper is located in a second position that allows the material to be in a second unloading state. The first unloading state and the second unloading state are different unloading states.

4. The unloading device for a belt conveyor according to claim 3, characterized in that, The unloading hopper is located behind the support. When the unloading hopper is in the first position, it is located away from the support; when the unloading hopper is in the second position, it is located close to the support. And / or, The connecting units are respectively provided on opposite sides of the unloading hopper, and each connecting unit includes the chute, the slide rail and the first oil cylinder.

5. The unloading device for a belt conveyor according to claim 1, characterized in that, The first transmission assembly includes a discharge roller and a first redirecting roller, which are respectively spaced apart on the discharge hopper; The second transmission assembly includes a sliding roller unit, a second redirecting roller and a second hydraulic cylinder disposed on the bracket. The sliding roller unit includes a sliding seat movably disposed on the bracket along the length direction of the bracket and a sliding roller disposed on the sliding seat. The conveyor belt is arranged to pass around the unloading roller, the first redirecting roller, the sliding roller and the second redirecting roller in sequence. The second hydraulic cylinder is connected between the bracket and the sliding seat. The second hydraulic cylinder can perform telescopic movement, thereby driving the sliding roller unit to move on the bracket, thereby adjusting the tension of the conveyor belt.

6. The unloading device for a belt conveyor according to claim 5, characterized in that, The support includes a first support, a second support disposed below the first support, and a connecting frame connecting the first support and the second support. The sliding roller unit is movably disposed on the second support. The second hydraulic cylinder is connected between the second support and the sliding seat. The connecting unit is disposed between the first support and the unloading hopper. The second transmission assembly further includes a fixed roller disposed on the connecting frame, the second redirecting roller disposed at the bottom of the first support, the fixed roller disposed between the first redirecting roller and the sliding roller, and the conveyor belt also passing around the fixed roller.

7. The unloading device for a belt conveyor according to claim 6, characterized in that, Rollers are provided on opposite sides of the sliding seat, and fixed tracks are provided on the second bracket along the length of the bracket corresponding to the positions of the rollers. The rollers are rolled on the fixed tracks on the corresponding sides.

8. The unloading device for a belt conveyor according to claim 5, characterized in that, The telescopic unloading mechanism also includes a primary slag cleaning scraper and a secondary slag cleaning scraper disposed on the unloading hopper and located below the unloading drum. The primary slag cleaning scraper and the secondary slag cleaning scraper are arranged at intervals to remove material adhering to the conveyor belt.

9. The unloading device for a belt conveyor according to claim 1, characterized in that, The bottom of the unloading hopper is provided with an unloading port.

10. A belt conveyor, characterized in that, The belt conveyor includes the unloading device as described in any one of claims 1 to 9, and the belt conveyor employs a trough-type idler group.

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