Flip-top coal chute

Abstract

The utility model relates to the technical field of coal mining, especially relates to a flip type coal chute. The flip type coal chute comprises a hopper body, two guide assemblies, a driving shaft, a flap and a driving assembly, one side of the hopper body away from the belt conveyor is provided with a material buffer plate, and the top of the hopper body is provided with an opening. The driving shaft is driven to rotate by the driving assembly, so that the flap is switched between the open state and the closed state. In the open state, the flap is inclined downward towards the material buffer plate, so that the flip type coal chute can work normally. In the closed state, the flap covers the discharge port to block the discharge port, so that routine maintenance or cleaning operation can be carried out, the accident probability of the belt conveyor in routine maintenance and cleaning operation is reduced, in addition, the oil cylinder displacement sensor is electrically connected with the belt conveyor, the electrical interlocking and physical isolation of the belt conveyor can also be realized, and the safety of the flip type coal chute is further improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, and in particular to a flip-top coal chute. Background Technology

[0002] Belt conveyors are widely used in many industries such as mining, metallurgy, non-ferrous metals, building materials, and tobacco. The operation, cleaning, and maintenance of conveyors are important daily tasks for these companies. With increasingly stringent safety regulations, the mandatory implementation of six safety protection measures for belt conveyors has effectively suppressed related accidents during operation. However, there are currently no highly effective technical measures to address accidents during the installation and maintenance of belt conveyors (at present, management methods are the primary means of prevention). Utility Model Content

[0003] This utility model provides a flip-top coal chute to address the lack of measures in the existing technology to reduce the probability of accidents during routine maintenance of belt conveyors.

[0004] This utility model provides a flip-top coal chute, comprising: The bucket body has a material buffer plate on the side away from the belt conveyor, an opening on the top of the bucket body, and a discharge port on the bottom wall of the bucket body. Two guide components are respectively disposed on both sides of the discharge port and extend along the length direction of the discharge port; A drive shaft is provided on the side of the discharge port near the belt conveyor, and the drive shaft is rotatably engaged with the side wall or bottom wall of the bucket body; A flap is provided at the discharge port, and the two sides of one end of the flap are slidably engaged with the two guide components one by one. The flap is connected to the drive shaft through a connecting rod assembly. A drive assembly is connected to the drive shaft and is used to drive the drive shaft to rotate so that the flap can switch between an open state and a closed state. In the open state, the flap is tilted downward toward the material buffer plate; in the closed state, the flap covers the discharge port to block the discharge port.

[0005] According to the present invention, a flip-top coal chute is provided, wherein the guiding assembly includes: Two sliding rods are arranged at intervals in the vertical direction and extend along the length of the discharge port; a first connecting shaft is provided on both sides of one end of the flap, and the first connecting shaft is slidably engaged between the two sliding rods.

[0006] According to the present invention, a flip-top coal chute is provided at the end of the first connecting shaft away from the flip plate, and the limiting block and the slide rod are engaged in a limiting cooperation in the width direction of the discharge port.

[0007] According to the present invention, a flip-top coal chute is provided, wherein the connecting rod assembly includes: Two first connecting rods are arranged at intervals along the width direction of the discharge port and are respectively located on both sides of the flap. One end of each first connecting rod is rotatably engaged with the two sides of the flap, and the other end of each first connecting rod is connected to both ends of the drive shaft.

[0008] According to the present invention, a flip-top coal chute is provided in which the first connecting rod and the drive shaft are integrally formed.

[0009] According to the present invention, a flip-top coal chute is provided, the driving assembly comprising: A transmission mechanism, wherein the transmission mechanism is connected to one end of the drive shaft; A linear drive unit is connected to the transmission mechanism, and the linear drive unit is used to drive the drive shaft to rotate through the transmission mechanism.

[0010] According to the present invention, a flip-top coal chute is provided, wherein the transmission mechanism includes: A first connector is connected to the linear drive component; A limiting link, one end of which is hinged to the first connecting member; The second link is connected to one end of the drive shaft, and the end of the second link away from the drive shaft is hinged to the other end of the limiting link.

[0011] According to the present invention, a flip-top coal chute is provided, wherein the linear drive component is a hydraulic cylinder, and the telescopic rod of the hydraulic cylinder is connected to the first connecting component.

[0012] According to the present invention, a flip-top coal chute further includes: A hydraulic cylinder displacement sensor is electrically connected to the belt conveyor and is used to control the working state of the belt conveyor by detecting the piston position of the hydraulic cylinder.

[0013] According to the present invention, a flip-top coal chute is provided, wherein both the first connecting shaft and the slide rod are provided with positioning holes.

[0014] The flip-top coal chute provided by this utility model uses a drive assembly to drive the drive shaft to rotate, so that the flip plate switches between an open state and a closed state. In the open state, the flip plate tilts downward toward the material buffer plate, allowing the flip-top coal chute to operate normally. In the closed state, the flip plate covers the discharge port to block the discharge port, thus enabling routine maintenance or cleaning operations and reducing the probability of accidents during routine maintenance and cleaning of the belt conveyor. In addition, the hydraulic cylinder displacement sensor is electrically connected to the belt conveyor, which can realize electrical interlocking and physical isolation of the belt conveyor, further improving the safety of the flip-top coal chute. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the flip-top coal chute provided by this utility model.

[0017] Figure 2 This is a perspective structural diagram of the flip-top coal chute provided by this utility model.

[0018] Figure 3 This is a schematic diagram of the flap provided by this utility model in the open state.

[0019] Figure 4 This is a schematic diagram of the flap provided by this utility model in the closed state.

[0020] Figure 5 This is a schematic diagram of the transmission mechanism and drive shaft provided by this utility model.

[0021] Figure label: 10. Bucket body; 11. Material buffer plate; 20. Drive shaft; 30. Flip plate; 31. First connecting shaft; 40. Slide rod; 50. First connecting rod; 60. Transmission mechanism; 61. First connecting piece; 62. Limiting connecting rod; 63. Second connecting rod; 70. Belt conveyor. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element 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 the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to 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 the embodiments of this utility model based on the specific circumstances.

[0025] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0027] like Figure 1 and Figure 2 As shown, the flip-top coal chute includes a chute body 10, two guide assemblies, a drive shaft 20, a flap 30, and a drive assembly. A material buffer plate 11 is provided on the side of the chute body 10 away from the belt conveyor 70. An opening is provided at the top of the chute body 10, and a discharge port is provided on the bottom wall of the chute body 10. The two guide assemblies are respectively located on both sides of the discharge port and extend along the length of the discharge port. The drive shaft 20 is located on the side of the discharge port near the belt conveyor 70. The drive shaft 20 is flush with the side wall of the chute body 10 or... The bottom wall rotates in conjunction with the material; the flap 30 is set at the discharge port, and the two sides of one end of the flap 30 are slidably connected to the two guide components one by one. The flap 30 is connected to the drive shaft 20 through the connecting rod assembly; the drive assembly is connected to the drive shaft 20 and is used to drive the drive shaft 20 to rotate so that the flap 30 switches between the open state and the closed state. In the open state, the flap 30 tilts downward toward the material buffer plate 11; in the closed state, the flap 30 covers the discharge port to block the discharge port.

[0028] The flip-top coal chute provided by this utility model drives the drive shaft 20 to rotate via a drive assembly, so that the flap 30 switches between an open state and a closed state. In the open state, the flap 30 tilts downward toward the material buffer plate 11, allowing the flip-top coal chute to operate normally. In the closed state, the flap 30 covers the discharge port to block it, thus enabling routine maintenance or cleaning operations and reducing the probability of accidents during routine maintenance and cleaning of the belt conveyor 70. In addition, the hydraulic cylinder displacement sensor is electrically connected to the belt conveyor 70, which can realize electrical interlocking and physical isolation of the belt conveyor 70, further improving the safety of the flip-top coal chute.

[0029] In one embodiment of this utility model, such as Figure 2 and Figure 3As shown, the guide assembly includes two slide rods 40, which are spaced apart in the vertical direction and extend along the length of the discharge port. The two slide rods 40 are parallel to each other, and both ends of the slide rods 40 are connected to the bottom wall of the hopper body 10. A first connecting shaft 31 is provided on both sides of one end of the flap 30, and the first connecting shaft 31 is slidably engaged between the two slide rods 40. Through the sliding engagement of the first connecting shaft 31 and the slide rods 40, it can be ensured that one end of the flap 30 moves smoothly and steadily along a preset trajectory during movement, effectively preventing the flap 30 from deviating, jamming, or shaking, thereby ensuring the reliability and accuracy of the sealing and opening actions of the coal chute.

[0030] In one embodiment of this utility model, a limiting block is provided at the end of the first connecting shaft 31 away from the flap 30. The outer diameter of the limiting block is larger than the distance between the two slide rods 40, and the limiting block and the slide rods 40 are engaged in a limiting fit in the width direction of the discharge port. Since the first connecting shaft 31 may move laterally due to vibration or accidental impact during sliding, the limiting block can reliably abut against the slide rods 40, thereby effectively avoiding the risk of the first connecting shaft 31 slipping off between the two slide rods 40. This not only greatly enhances the stability and reliability of the connection between the flap 30 and the bucket 10, ensuring the structural integrity of the entire guiding mechanism during long-term operation, but also avoids equipment downtime for maintenance due to the connecting shaft falling off, improving the overall operating efficiency and service life of the equipment.

[0031] In one embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the linkage assembly includes two first linkages 50, which are spaced apart along the width of the discharge port and located on both sides of the flap 30. This symmetrical arrangement ensures that the driving force is evenly transmitted to both sides of the flap 30, effectively preventing twisting or deflection of the flap 30 due to uneven force during movement, thus ensuring the smoothness and synchronicity of the flap 30's opening and closing actions. One end of each of the two first linkages 50 is rotatably engaged with the sides of the flap 30. Preferably, a second connecting shaft is provided on each side of the flap 30, with one end of each of the two first linkages 50 rotatably engaged with the second connecting shaft, and the other ends of each of the two first linkages 50 fixedly connected to both ends of the drive shaft 20. This connection method ensures that the torque output from the drive shaft 20 can directly drive the two first linkages 50 to swing synchronously without loss or slippage, thereby achieving precise control of the opening and closing angle and speed of the flap 30 and improving the response speed and control accuracy of the entire transmission mechanism 60.

[0032] In one embodiment of this utility model, such as Figure 5As shown, the first connecting rod 50 and the drive shaft 20 are integrally formed. The integrally formed structure also simplifies the number of parts, reduces assembly complexity and potential failure points, and enhances the structural strength and durability of the entire connecting rod assembly.

[0033] In one embodiment of this utility model, the drive assembly includes a transmission mechanism 60 and a linear drive component. The linear drive component (such as a hydraulic cylinder, pneumatic cylinder, or electric push rod) is used as the power source, leveraging its advantages of simple structure, large thrust, ease of control, and being an industrial standard component to provide reciprocating motion driving force for the entire device. The transmission mechanism 60 is connected to one end of the drive shaft 20; the linear drive component is fixed to the bottom or side wall of the bucket body 10 and connected to the transmission mechanism 60. The linear drive component drives the drive shaft 20 to rotate via the transmission mechanism 60. The transmission mechanism 60 (such as a crank-rocker mechanism) plays a role in motion conversion, accurately converting the linear reciprocating motion output by the linear drive component into the rotational motion required by the drive shaft 20, thereby driving the entire flap 30 linkage system to operate.

[0034] In one embodiment of this utility model, such as Figure 5 As shown, the transmission mechanism 60 includes a first connecting member 61, a limiting link 62, and a second link 63. These three components together constitute a crank-rocker type transmission mechanism 60, which converts the linear reciprocating motion provided by the linear drive component into the rotational motion required by the drive shaft 20. The first connecting member 61 is used to connect the limiting link 62 to the linear drive component, and the connection between the first connecting member 61 and the linear drive component is detachable. As the power input end, the detachable connection between the first connecting member 61 and the linear drive component greatly simplifies the installation, debugging, and subsequent maintenance process. When the linear drive component needs repair or replacement, it can be quickly separated without disassembling the entire transmission mechanism 60, thereby effectively shortening equipment downtime and reducing maintenance costs. One end of the limiting link 62 is hinged to the first connecting member 61, and the second link 63 is connected to one end of the drive shaft 20. The end of the second link 63 away from the drive shaft 20 is hinged to the other end of the limiting link 62. The second link 63 converts the push / pull force transmitted from the limiting link 62 into the rotational torque of the drive shaft 20. The length and arrangement of the limiting link 62 can precisely limit the total rotation angle of the drive shaft 20, ensuring that the opening and closing action of the flap 30 can be accurately completed between the preset start and stop positions.

[0035] In one embodiment of this utility model, the linear drive component is a hydraulic cylinder, and the extension rod of the hydraulic cylinder is connected to the first connecting component 61.

[0036] In one embodiment of this utility model, such as Figure 3 and Figure 4As shown, the flip-top coal chute also includes a hydraulic cylinder displacement sensor, which is electrically connected to the belt conveyor 70. By setting up the hydraulic cylinder displacement sensor, an automated safety interlock mechanism is constructed, directly binding the opening and closing state of the flap 30 to the start and stop permissions of the conveyor, thereby greatly improving the operational safety of the system. The hydraulic cylinder displacement sensor determines and controls the working state of the belt conveyor 70 by detecting the position of the hydraulic cylinder piston rod in real time and accurately.

[0037] The hydraulic cylinder displacement sensor controls the operating state of the belt conveyor 70 by detecting the piston position of the hydraulic cylinder. When the hydraulic cylinder is in the retracted state, the flap 30 is in the open position, the material passage is unobstructed, and the hydraulic cylinder displacement sensor outputs an electrical signal to the control system of the belt conveyor 70, enabling it to operate normally. The belt conveyor 70 can start and stop normally for conveying operations, ensuring a smooth production process. Conversely, when the hydraulic cylinder is in the extended state, the flap 30 is closed and the coal chute outlet is blocked, indicating that the equipment is undergoing maintenance or cleaning. In this state, the hydraulic cylinder displacement sensor outputs a stop or prohibit start signal, locking the belt conveyor 70 in the maintenance or stop state. This design fundamentally eliminates the risk of the conveyor being mistakenly started during maintenance due to human error or other unforeseen circumstances, effectively protecting the personal safety of downstream maintenance personnel and the safety of the equipment. It achieves a reliable engineering safety protection, with a reliability far exceeding that of "soft" safety measures that rely on operating procedures or personnel self-awareness.

[0038] It should be noted that hydraulic cylinder displacement sensors are mainly based on converting the mechanical displacement of the piston into an electrical signal. Hydraulic cylinder displacement sensors can be potentiometer-type, magnetostrictive-type, and pressure change-type sensors.

[0039] In one embodiment of this utility model, both the first connecting shaft 31 and the slide rod 40 are provided with positioning holes. When the flap 30 is in the closed state, the positioning holes on the first connecting shaft 31 and the slide rod 40 are aligned. By inserting a pin into the positioning hole, the flap 30 can be prevented from opening due to loss of control of the hydraulic cylinder.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A flip-top coal chute, characterized in that, include: The bucket (10) has a material buffer plate (11) on the side away from the belt conveyor (70), an opening on the top of the bucket (10), and a discharge port on the bottom wall of the bucket (10). Two guide components are respectively disposed on both sides of the discharge port and extend along the length direction of the discharge port; A drive shaft (20) is provided on the side of the discharge port near the belt conveyor (70), and the drive shaft (20) is rotatably engaged with the side wall or bottom wall of the bucket body (10). Flip plate (30), the flip plate (30) is disposed at the discharge port, and the two sides of one end of the flip plate (30) are slidably engaged with the two guide components one by one. The flip plate (30) is connected to the drive shaft (20) through the connecting rod assembly. A drive assembly is connected to the drive shaft (20) and is used to drive the drive shaft (20) to rotate so that the flap (30) switches between an open state and a closed state. In the open state, the flap (30) tilts downward toward the material buffer plate (11); in the closed state, the flap (30) covers the discharge port to block the discharge port.

2. The flip-top coal chute according to claim 1, characterized in that, The guiding component includes: Two slide rods (40) are arranged at intervals in the vertical direction and extend along the length of the discharge port; a first connecting shaft (31) is provided on both sides of one end of the flap (30), and the first connecting shaft (31) is slidably locked between the two slide rods (40).

3. The flip-top coal chute according to claim 2, characterized in that, A limiting block is provided at one end of the first connecting shaft (31) away from the flap (30), and the limiting block and the slide rod (40) are engaged in a limiting cooperation in the width direction of the discharge port.

4. The flip-top coal chute according to claim 2, characterized in that, The linkage assembly includes: Two first connecting rods (50) are arranged at intervals along the width direction of the discharge port and are respectively located on both sides of the flap (30). One end of each of the two first connecting rods (50) is rotatably engaged with both sides of the flap (30), and the other end of each of the two first connecting rods (50) is connected to both ends of the drive shaft (20).

5. The flip-top coal chute according to claim 4, characterized in that, The first connecting rod (50) is integrally formed with the drive shaft (20).

6. The flip-top coal chute according to any one of claims 1 to 5, characterized in that, The driving component includes: A transmission mechanism (60) is connected to one end of the drive shaft (20); A linear drive unit is connected to the transmission mechanism (60) and is used to drive the drive shaft (20) to rotate through the transmission mechanism (60).

7. The flip-top coal chute according to claim 6, characterized in that, The transmission mechanism (60) includes: A first connector (61) is connected to the linear drive component; A limiting link (62), one end of which is hinged to the first connecting member (61); The second link (63) is connected to one end of the drive shaft (20), and the end of the second link (63) away from the drive shaft (20) is hinged to the other end of the limiting link (62).

8. The flip-top coal chute according to claim 7, characterized in that, The linear drive component is a hydraulic cylinder, and the extension rod of the hydraulic cylinder is connected to the first connecting component (61).

9. The flip-top coal chute according to claim 8, characterized in that, Also includes: A hydraulic cylinder displacement sensor is electrically connected to the belt conveyor (70) and is used to control the working state of the belt conveyor (70) by detecting the piston position of the hydraulic cylinder.

10. The flip-top coal chute according to any one of claims 2 to 5, characterized in that, Both the first connecting shaft (31) and the slide rod (40) are provided with positioning holes.

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