Telescopic tail and transporter

Abstract

The utility model provides a telescopic machine tail and conveyer, telescopic machine tail is applied to conveyer, telescopic machine tail includes fixed groove, movable slot and telescopic portion, among them, movable slot sets up in fixed groove, movable slot includes first slot body and second slot body, and second slot body is detachably connected with first slot body, telescopic portion sets up in fixed groove, and is connected with first slot body, and telescopic portion can drive first slot body relative to fixed groove movement, among them, telescopic machine tail has maintenance state, under maintenance state, first slot body is connected with second slot body, and telescopic portion drives first slot body away from second slot body, and forms maintenance space between first slot body and second slot body. The utility model discloses the cooperation of telescopic machine tail through split movable slot and telescopic portion, and the operator can be in the maintenance space between first slot body and second slot body and advances maintenance operation, improves the reliability and maintenance efficiency of telescopic machine tail.

Description

Technical Field

[0001] This utility model relates to the field of scraper conveyor technology, and more specifically, to a telescopic tail and a conveyor. Background Technology

[0002] In related technologies, the telescopic tail section, as the tail component of a conveyor, typically employs a combination of a fixed trough and a movable trough, with the movable trough often being an integral design. When maintenance is required, such as cleaning coal sludge from the bottom trough, replacing worn parts, or addressing scraper jamming, the integrated structure of the movable trough prevents mine operators from directly and promptly repairing the worn lower and middle plates underground, limiting the effectiveness of cleaning coal piles in the bottom trough. Furthermore, when scrapers become stuck within the telescopic tail section, there is a lack of convenient underground solutions; the entire telescopic tail section must be dismantled, or the middle plate of the movable trough must be cut through to remove the scraper, resulting in time-consuming and costly operations that severely impact equipment maintenance efficiency and production continuity. Utility Model Content

[0003] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0004] In view of the above, according to the first aspect of the present invention, the present invention proposes a telescopic tail section, which is applied to a transport machine. The telescopic tail section includes a fixed groove, a movable groove, and a telescopic part. The movable groove is movably disposed in the fixed groove and includes a first groove body and a second groove body, which are detachably connected to the first groove body. The telescopic part is disposed in the fixed groove and connected to the first groove body. The telescopic part can drive the first groove body to move relative to the fixed groove. The telescopic tail section has a maintenance state. In the maintenance state, the first groove body and the second groove body are disconnected, and the telescopic part drives the first groove body away from the second groove body, forming a maintenance space between the first groove body and the second groove body.

[0005] The telescopic tail section proposed in this invention is applied to a transport aircraft. The telescopic tail section mainly comprises three parts: a fixed groove, a movable groove, and a telescopic part. Among them, the fixed groove serves as a basic support structure, the movable groove is assembled on the fixed groove and can move on the fixed groove, and the fixed groove can restrict the movement direction of the movable groove.

[0006] The movable trough consists of a first trough body and a second trough body, where the first trough body is the rear movable trough and the second trough body is the front movable trough. The second trough body and the first trough body are detachably connected, that is, the second trough body and the first trough body are combined through a detachable connecting piece. The fixed trough body is located at the tail end of the conveyor, and the first trough body is closer to the connection position between the fixed trough body and the conveyor body relative to the second trough body.

[0007] The first groove is connected to the fixed groove via a telescopic part. When the second groove is connected to the first groove as a whole, the movable groove and the fixed groove are connected. The telescopic part is set inside the fixed groove. Through the telescopic movement of the telescopic part, the first groove moves along the length direction of the fixed groove, thereby driving the entire movable groove to move relative to the fixed groove.

[0008] In normal operation, the telescopic tail of the present invention is connected to the first groove and the second groove. The entire movable groove moves relative to the fixed groove under the drive of the telescopic part, extending out of the fixed groove or retracting into the fixed groove, so as to meet the length adjustment requirements of the telescopic tail and realize the tensioning of the chain.

[0009] When maintenance is required, such as cleaning coal sludge from the bottom trough, replacing worn parts, or fixing scraper jamming, the connection between the first and second troughs is released, separating them. The telescopic unit then drives the first trough to move away from the second trough, creating a maintenance space between them. At this time, the second trough, no longer constrained by its connection, remains in its original position. Maintenance personnel can directly access the second or first trough, or even the interior of the fixed trough, through this maintenance space without disassembling the entire machine or cutting through the middle plate. This significantly reduces maintenance difficulty. Furthermore, the split-type movable trough design allows for partial disassembly, avoiding the drawback of requiring venting to the surface for maintenance with a single movable trough, thus improving the downhole maintainability of the telescopic treadmill.

[0010] In summary, the telescopic tail section proposed in this utility model, through the cooperation of the split movable groove and the telescopic part, allows operators to perform maintenance operations within the maintenance space between the first and second grooves. This effectively solves the problems of concentrated chain wear, difficulty in cleaning coal sludge, and complex maintenance in the prior art, thereby improving the reliability and maintenance efficiency of the telescopic tail section.

[0011] In addition, the telescopic tail of the machine according to the above-mentioned technical solution provided by this utility model may also have the following additional technical features:

[0012] Optionally, in some technical solutions of this utility model, the movable groove further includes a connector, which is connected to the first groove and the second groove respectively, so as to realize the detachable connection between the first groove and the second groove.

[0013] Optionally, in some technical solutions of this utility model, a first through hole is provided on the first groove body, a second through hole is provided on the second groove body, and the connecting parts include bolts and nuts. The bolts pass through the first through hole and the second through hole, and the nuts are threadedly connected to the bolts and abut against the side wall of the first groove body.

[0014] Optionally, in some technical solutions of this utility model, the connecting member further includes a washer, which is sleeved on the bolt and located between the nut and the side wall of the first groove.

[0015] Optionally, in some technical solutions of this utility model, a third through hole is provided on the first groove, and the connecting member further includes a connecting pin, which is disposed in the second groove, and one end of the connecting pin away from the second groove is disposed in the third through hole.

[0016] Optionally, in some technical solutions of this utility model, the first groove includes a first connecting end plate with a first through hole, and the second groove includes a second connecting end plate with a second through hole.

[0017] In some technical solutions of this utility model, optionally, the telescopic part includes a telescopic cylinder and a piston rod. The telescopic cylinder includes a cylinder body and a piston rod. The cylinder body is fixedly disposed on the side wall of the fixed groove. One end of the piston rod extends into the cylinder body, and the other end is connected to the first groove body. The telescopic cylinder drives the first groove body to move relative to the fixed groove through the extension and retraction of the piston rod.

[0018] In some technical solutions of this utility model, a pusher seat is provided on the first groove, and the other end of the piston rod is connected to the pusher seat.

[0019] In some technical solutions of this utility model, the fixing groove includes a middle plate and two side plates, the middle plate extending along the length direction of the fixing groove; the two side plates are respectively connected to both sides of the middle plate; wherein, the middle plate and the two side plates limit the movable groove assembled in the fixing groove, so that the movable groove moves along the length direction of the fixing groove.

[0020] According to a second aspect of the present invention, the present invention provides a transport aircraft, which includes a telescopic tail as described in any of the above technical solutions.

[0021] The telescopic tail of the present invention, since it includes the telescopic tail of any of the above-mentioned technical solutions, has all the beneficial effects of the telescopic tail of any of the above-mentioned technical solutions, and will not be repeated here.

[0022] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 A schematic diagram of the telescopic tail section in a maintenance state is shown in an embodiment of this utility model;

[0025] Figure 2 A schematic diagram of the structure of the first groove of the telescopic tail section in an embodiment of this utility model is shown;

[0026] Figure 3 A schematic diagram of the structure of the second groove of the telescopic tail section in an embodiment of this utility model is shown;

[0027] Figure 4 A schematic diagram of the movable groove of the telescopic tail section in an embodiment of this utility model is shown;

[0028] Figure 5 A schematic diagram of the telescopic tail section in the retracted state of the movable slot is shown in an embodiment of this utility model;

[0029] Figure 6 A schematic diagram of the telescopic hydraulic cylinder in an embodiment of this utility model is shown.

[0030] Figure label:

[0031] 100 Telescopic tail section, 110 Fixed groove, 120 Movable groove, 122 First groove body, 124 First connecting end plate, 126 First through hole, 128 Third through hole, 130 Second groove body, 132 Second connecting end plate, 134 Second through hole, 140 Connector, 142 Nut, 144 Connecting pin, 150 Telescopic part, 152 Telescopic cylinder, 154 Cylinder body, 156 Piston rod, 160 Push seat, 170 Maintenance space. Detailed Implementation

[0032] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present 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 and features described in these embodiments can be combined with each other.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also 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.

[0034] The following reference Figures 1 to 6 The present invention describes a telescopic tail 100 and a transport vehicle according to some embodiments thereof.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, in some embodiments of this utility model, a telescopic tail section 100 is proposed. The telescopic tail section 100 is applied to a transport aircraft. The telescopic tail section 100 includes a fixed groove 110, a movable groove 120, and a telescopic part 150. The movable groove 120 is movably disposed in the fixed groove 110 and includes a first groove body 122 and a second groove body 130. The second groove body 130 is detachably connected to the first groove body 122. The telescopic part 150 is disposed in the fixed groove 110 and connected to the first groove body 122. The telescopic part 150 can drive the first groove body 122 to move relative to the fixed groove 110. The telescopic tail section 100 has a maintenance state. In the maintenance state, the first groove body 122 is disconnected from the second groove body 130, and the telescopic part 150 drives the first groove body 122 away from the second groove body 130, forming a maintenance space 170 between the first groove body 122 and the second groove body 130.

[0036] In this embodiment, the telescopic tail 100 proposed by this utility model is applied to a transport aircraft. The telescopic tail 100 mainly includes three parts: a fixed groove 110, a movable groove 120, and a telescopic part 150. Among them, the fixed groove 110 serves as a basic support structure, the movable groove 120 is assembled on the fixed groove 110 and can move on the fixed groove 110, and the fixed groove 110 can restrict the movement direction of the movable groove 120.

[0037] The movable trough 120 consists of a first trough body 122 and a second trough body 130, wherein the first trough body 122 is the rear movable trough and the second trough body 130 is the front movable trough. The second trough body 130 is detachably connected to the first trough body 122, that is, the second trough body 130 and the first trough body 122 are combined through a detachable connecting member 140. The fixed trough 110 is located at the tail end of the transport machine, and the first trough body 122 is closer to the connection position between the fixed trough 110 and the transport machine relative to the second trough body 130.

[0038] The first groove 122 is connected to the fixed groove 110 via a telescopic part 150. When the second groove 130 is integrated with the first groove 122, the connection between the movable groove 120 and the fixed groove 110 is achieved. The telescopic part 150 is disposed within the fixed groove 110. Through the telescopic movement of the telescopic part 150, the first groove 122 is driven along the length direction of the fixed groove 110 (e.g., ...). Figure 1 The movement (in the direction indicated by the middle arrow A) drives the movable groove 120 to move relative to the fixed groove 110.

[0039] In normal operation, the telescopic tail 100 proposed in this utility model has the first groove 122 and the second groove 130 connected. The entire movable groove 120 moves relative to the fixed groove 110 under the drive of the telescopic part 150, extending out of the fixed groove 110 or retracting into the fixed groove 110, so as to meet the length adjustment requirements of the telescopic tail 100 and realize the tensioning of the chain.

[0040] When maintenance is required, such as cleaning coal sludge from the bottom trough, replacing worn parts, or fixing scraper jamming, the connection between the first trough 122 and the second trough 130 is released, separating the first trough 122 and the second trough 130. The telescopic part 150 drives the first trough 122 to move away from the second trough 130, forming a maintenance space 170 between them. At this time, the second trough 130 remains in place due to the loss of connection constraints. Maintenance personnel can directly access the bottom of the second trough 130 or the first trough 122, or the interior of the fixed trough 110 through this space, without disassembling the entire machine or cutting through the middle plate, significantly reducing maintenance difficulty. At the same time, the split movable trough 120 design allows for partial disassembly, avoiding the disadvantage of the integral movable trough 120 requiring up-the-ground maintenance, and improving the downhole maintainability of the telescopic tail 100.

[0041] Specifically, when in maintenance mode, before the first groove 122 and the second groove 130 are disconnected, the telescopic part 150 first drives the first groove 122 to move away from the fixed groove 110, so that the movable groove 120 extends out of the fixed groove 110.

[0042] Specifically, the movable groove 120 is movably disposed on the fixed groove 110, and the first groove body 122 is assembled on the fixed groove 110.

[0043] Specifically, the second groove 130 is connected to the end of the first groove 122 that is away from the fixed groove 110.

[0044] Specifically, the first groove 122 can slide on the fixed groove 110 under the drive of the telescopic part 150.

[0045] In summary, the telescopic tail 100 proposed in this utility model, through the cooperation of the split movable groove 120 and the telescopic part 150, allows operators to perform maintenance operations within the maintenance space 170 between the first groove 122 and the second groove 130. This effectively solves the problems of concentrated chain wear, difficulty in cleaning coal sludge, and complex maintenance in the prior art, and improves the reliability and maintenance efficiency of the telescopic tail 100.

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments of this utility model, the movable groove 120 may optionally include a connector 140, which is connected to the first groove 122 and the second groove 130 respectively, so as to realize the detachable connection between the first groove 122 and the second groove 130.

[0047] In this embodiment, the movable groove 120 further includes a connector 140, which is connected to the first groove 122 and the second groove 130 respectively to achieve a detachable connection. In use, the connector 140 directly contacts the connection part of the first groove 122 and the second groove 130, and the first groove 122 and the second groove 130 are fixed or separated through mechanical connection.

[0048] During maintenance, disconnect the connector 140, such as by loosening the bolts or pulling out the pin, to separate the first groove 122 from the second groove 130. During normal operation, the two grooves are fastened together by the connector 140 to form an integral movable groove 120.

[0049] Through the aforementioned connector 140, this utility model enables the movable slot 120 to be disassembled and reassembled separately, avoiding the drawback of the integral movable slot 120 requiring up-well maintenance, and significantly improving downhole maintainability.

[0050] Specifically, there are multiple connectors 140, which are connected to the first groove 122 and the second groove 130 respectively, thereby improving the strength of the connection.

[0051] Specifically, the connector 140 is a mechanical connection assembly. The core function of the connector 140 is to realize the rapid separation and fastening of the first groove 122 and the second groove 130. The movable groove 120 may also include auxiliary parts such as positioning pins and guide sleeves, which cooperate with the connector 140 to achieve precise connection.

[0052] The connector 140 acts directly on the first groove 122 and the second groove 130, generating mechanical force through thread preload and interference fit, transmitting tensile or shear force, and ensuring that the two grooves have no relative displacement during normal operation.

[0053] During maintenance, on the one hand, the operator uses tools to contact the constraint of the connector 140 to separate the first groove 122 from the second groove 130. During normal operation, the connector 140 is tightened by reverse operation to form an integral movable groove 120.

[0054] On the other hand, the automatic disassembly device can be used to control the disassembly and installation of the connector 140, thereby achieving automated control of the movable slot 120.

[0055] Specifically, a hydraulically driven snap-fit ​​structure can be integrated into the connector 140, enabling tool-free disassembly and assembly by remotely controlling the locking and releasing of the snap-fit, thereby further shortening maintenance time.

[0056] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, in some embodiments of this utility model, optionally, the first groove 122 is provided with a first through hole 126, the second groove 130 is provided with a second through hole 134, the connector 140 includes a bolt and a nut 142, the bolt passes through the first through hole 126 and the second through hole 134, the nut 142 is threadedly connected to the bolt and abuts against the side wall of the first groove 122.

[0057] In this embodiment, the first groove 122 has a first through hole 126, and the second groove 130 has a second through hole 134. The connector 140 consists of a bolt and a nut 142. The bolt passes through the first through hole 126 of the first groove 122 and the second through hole 134 of the second groove 130 in sequence, and the nut 142 is threadedly engaged with the end of the bolt. The bolt passes through the through holes of the two grooves, and the nut 142 is tightened on the side wall of the first groove 122. The preload of the threaded pair ensures that the two grooves are tightly connected.

[0058] During connection, the bolt passes through the two through holes, and the nut 142 is screwed into the end of the bolt and presses against the side wall of the first groove 122, providing axial preload. During disassembly, the nut 142 is loosened and the bolt is pulled out, separating the two grooves.

[0059] Through the cooperation of the first through hole 126, the second through hole 134, the bolt and nut 142, this utility model provides a stable and repeatedly disassembled connection method with controllable preload, which is suitable for maintenance scenarios that require frequent disassembly and assembly.

[0060] Specifically, there are two nuts 142, which are fitted with one bolt. One of the nuts 142 is close to the first through hole 126 and is tightened on the side wall of the first groove 122, abutting against the side wall of the first groove 122. The other nut 142 is close to the second through hole 134 and is tightened on the side wall of the second groove 130, abutting against the side wall of the second groove 130.

[0061] Specifically, the first groove 122 has multiple first through holes 126, the second groove 130 has multiple second through holes 134, and the number of connectors 140 is multiple, with one bolt cooperating with one first through hole 126 and one second through hole 134.

[0062] Specifically, the bolts can be high-strength alloy steel bolts, and the nut 142 is a hexagonal thick nut with internal threads that match the bolts and is galvanized for rust prevention.

[0063] Specifically, nut 142 can also be a self-locking nut, which uses the friction or elastic deformation between the threads to prevent the nut from loosening and reduce the risk of connection failure caused by downhole vibration.

[0064] Specifically, torque markings can be engraved on the ends of bolts, allowing operators to quickly check the tightening status and avoid connection problems caused by insufficient or excessive torque.

[0065] Specifically, the connector 140 can also be fixed in other ways than bolts and screws, such as a snap-fit ​​structure.

[0066] In some embodiments of the present invention, the connector 140 may optionally include a washer, which is fitted onto the bolt and located between the nut 142 and the side wall of the first groove 122.

[0067] In this embodiment, the connector 140 also includes a washer, which is fitted onto the bolt and located between the nut 142 and the side wall of the first groove 122. During connection, as the nut 142 is tightened, the washer is compressed, dispersing the local pressure exerted by the nut 142 on the side wall of the first groove 122. During disassembly, the washer recovers its deformation as the nut 142 is loosened and can be reused. By using the washer, this invention avoids local indentations or deformation caused by the nut 142 directly pressing against the groove surface, enhancing connection stability and extending the service life of the groove.

[0068] Specifically, the washer can be a flat washer made of hard steel, with its inner diameter matching the outer diameter of the bolt.

[0069] Specifically, the washer can also be a spring washer, which uses elastic deformation to provide continuous preload compensation, reducing loosening of the connection caused by thermal expansion and contraction of the groove or vibration.

[0070] Specifically, the washer can also be a composite washer, with a wear-resistant rubber layer pasted on the surface of the steel flat washer, which not only disperses the pressure but also reduces the rigid friction between the nut 142 and the groove, thus reducing the resistance during disassembly.

[0071] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments of the present invention, optionally, a third through hole 128 is provided on the first groove 122, and the connector 140 further includes a connecting pin 144, which is disposed in the second groove 130, and one end of the connecting pin 144 away from the second groove 130 is disposed in the third through hole 128.

[0072] In this embodiment, the first groove 122 is provided with a third through hole 128, and the connector 140 adopts a connecting pin 144 structure, wherein the connecting pin 144 is fixed to the second groove 130, and its end facing away from the second groove 130 is inserted into the third through hole 128 of the first groove 122, so as to realize the detachable connection between the second groove 130 and the first groove 122.

[0073] This utility model, through the mechanical cooperation of the connecting pin 144 and the third through hole 128, not only ensures the connection strength and stability of the movable groove 120 during normal operation, avoiding loosening of the connection due to vibration or impact, but also allows for quick release of connection constraints during maintenance. For example, pulling out the connecting pin 144 can separate the first groove 122 and the second groove 130. With the help of the telescopic part 150, the first groove 122 is moved to form a maintenance space 170, allowing maintenance personnel to directly access the interior of the second groove 130, the first groove 122, or the fixed groove 110 for operation. This significantly simplifies the maintenance process, avoids the complex operation of disassembling the entire movable groove 120 or cutting through the middle plate, reduces the technical difficulty and time cost of downhole maintenance, and improves equipment maintenance efficiency.

[0074] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of the present invention, optionally, the first groove 122 includes a first connecting end plate 124, on which a first through hole 126 is provided, and the second groove 130 includes a second connecting end plate 132, on which a second through hole 134 is provided.

[0075] In this embodiment, the first groove 122 includes a first connecting end plate 124, and the second groove 130 includes a second connecting end plate 132. Specifically, the first connecting end plate 124 is a straight plate extending upward from the side wall of the first groove 122, and the second connecting end plate 132 is a straight plate extending upward from the side wall of the second groove 130. A first through hole 126 and a second through hole 134 are respectively provided on the two connecting end plates.

[0076] The first connecting end plate 124 and the second connecting end plate 132 are fitted together facing each other, and the through holes are aligned for inserting the connector 140. During connection, the two connecting end plates are fitted together, the through holes are aligned, and the connector 140 is inserted to achieve fixation. During disassembly, the connector 140 is released, the two connecting end plates separate, and the first and second grooves 130 are separated.

[0077] This invention achieves standardized connecting components by setting dedicated connecting parts in the first groove 122 and the second groove 130, which facilitates the unified design of through hole positions and dimensions, and improves assembly accuracy and reliability.

[0078] Specifically, the first groove 122 also includes a first body, a first connecting end plate 124 connected to the first body, and the first connecting end plate 124 and the first body are an integral structure.

[0079] Specifically, the second groove 130 also includes a second body, and the second connecting end plate 132 is connected to the second plate, and the second connecting end plate 132 and the second plate are an integral structure.

[0080] Specifically, the movable groove 120 also includes a positioning boss and a positioning groove. The present invention provides a positioning boss on one of the first connecting end plate 124 or the second connecting end plate 132, and a corresponding positioning groove on the other. When connecting, the positioning boss is embedded in the positioning groove to achieve quick alignment and reduce manual adjustment time.

[0081] Specifically, reinforcing ribs are welded to the back of the first connecting end plate 124 and the second connecting end plate 132, i.e., at the connection with the side wall of the tank, to enhance the bending stiffness of the end plates and prevent deformation of the end plates caused by the pre-tightening force of the connector 140.

[0082] like Figure 5 and Figure 6 As shown, in some embodiments of this utility model, optionally, the telescopic part 150 includes a telescopic cylinder 152 and a piston rod 156. The telescopic cylinder 152 includes a cylinder body 154 and a piston rod 156. The cylinder body 154 is fixedly disposed on the side wall of the fixed groove 110. One end of the piston rod 156 extends into the cylinder body 154, and the other end is connected to the first groove 122. The telescopic cylinder 152 drives the first groove 122 to move relative to the fixed groove 110 through the extension and retraction of the piston rod 156.

[0083] In this embodiment, the telescopic part 150 includes a telescopic cylinder 152, which drives the first groove 122 to move via a piston rod 156. The telescopic cylinder 152 consists of a cylinder body 154 and a piston rod 156. The cylinder body 154 is fixed to the side wall of the fixed groove 110, and one end of the piston rod 156 is inside the cylinder body 154, while the other end is connected to the first groove 122. The cylinder body 154 is fixed to the side wall of the fixed groove 110 by bolts or welding, and the end of the piston rod 156 is connected to the first groove 122 via a connecting structure.

[0084] The piston rod 156 extends or retracts under the action of hydraulic oil, driving the first groove 122 to move along the length of the fixed groove 110, away from or close to the second groove 130. The extension and retraction speed can be adjusted by controlling the hydraulic oil flow.

[0085] By means of the telescopic cylinder 152, this application provides a stable and high-thrust drive method to meet the requirements of the telescopic tail 100 for motion accuracy and load capacity.

[0086] Specifically, telescopic cylinders 152 can be arranged on both sides of the fixed groove 110. One telescopic cylinder 152 is set on each side of the fixed groove 110. The two telescopic cylinders 152 control the hydraulic oil flow through a synchronization valve to ensure that the piston rod 156 extends and retracts at the same speed, thus avoiding the first groove 122 from tilting due to unilateral drive.

[0087] Specifically, a magnetostrictive displacement sensor is installed in the piston rod 156 or cylinder 154 to monitor the extension and retraction of the piston rod 156 in real time and feed the signal back to the control system to achieve closed-loop control of the position of the first groove 122.

[0088] Specifically, the telescopic part 150 can also be a drive motor.

[0089] like Figure 5 and Figure 6 As shown, in some embodiments of this utility model, optionally, a pusher seat 160 is provided on the first groove 122, and the other end of the piston rod 156 is connected to the pusher seat 160.

[0090] In this embodiment, a pusher seat 160 is provided on the first groove 122, and the other end of the piston rod 156 is connected to the pusher seat 160. Specifically, the pusher seat 160 is a boss extending outward from the side wall of the first groove 122 or an independently installed connecting block, with a connecting hole on its surface for connecting to the end of the piston rod 156. The end of the piston rod 156 is fixed to the connecting hole of the pusher seat 160 by a pin, bolt, etc., forming a rigid connection.

[0091] When the piston rod 156 extends or retracts, the thrust is transmitted to the first groove 122 through the pusher seat 160, causing it to move. The pusher seat 160 disperses local stress, preventing the piston rod 156 from directly acting on the side wall of the groove and causing deformation. By setting the pusher seat 160, this utility model enhances the connection reliability, reduces stress concentration at the connection between the piston rod 156 and the groove, and extends the service life of the telescopic part 150.

[0092] In some embodiments of this utility model, optionally, the fixing groove 110 includes a middle plate and two side plates, the middle plate extending along the length direction of the fixing groove 110; the two side plates are respectively connected to both sides of the middle plate; wherein, the middle plate and the two side plates limit the movable groove 120 assembled in the fixing groove 110, so that the movable groove 120 moves along the length direction of the fixing groove 110.

[0093] In this embodiment, the structure of the fixing groove 110 is defined. The fixing groove 110 includes a middle plate, the middle plate edge of which extends along the length direction. The fixing groove 110 also includes two side plates connecting the two sides of the middle plate. The middle plate and the side plates limit the movable groove 120, causing it to extend along the length direction (as follows). Figure 1 Move in the direction indicated by arrow A in the diagram.

[0094] In the fixed groove 110, the middle plate is the core support plate of the fixed groove 110, extending along the length of the fixed groove 110, and the two side plates are vertically connected to both sides of the middle plate to form a U-shaped groove.

[0095] The side plates are fixed to the middle plate by welding or bolts to form a stable U-shaped structure; the movable groove 120 is assembled in the U-shaped groove, and the inner walls of the middle plate and side plates are in contact with the outer wall of the movable groove 120. When the movable groove 120 moves, the inner walls of the middle plate and side plates restrict its lateral and vertical displacement, ensuring that it can only move in a straight line along its length.

[0096] In summary, this utility model reduces the offset and wear of the movable trough 120 during movement by limiting the position of the U-shaped structure, thereby improving the stability of the movement; the bottom plate seals the bottom of the trough to prevent coal slurry and debris from entering the trough.

[0097] In some embodiments of this utility model, optionally, the first groove 122 is a rear movable groove, the second groove 130 is a front movable groove, and the connecting member 140 is a bolt, nut 142, or washer. The telescopic part 150 is a hydraulic cylinder. The front movable groove and the rear movable groove are connected into a single movable groove 120 by bolts, nuts 142, and washers. Figure 4 As shown. The integral movable groove 120 is assembled on the fixed groove 110, and the integral movable groove 120 is limited by the side plate and middle plate of the fixed groove 110. The integral movable groove 120 and the fixed groove 110 are connected by a hydraulic cylinder. As the hydraulic cylinder extends and retracts, the movable groove 120 can extend and retract on the fixed groove 110 to achieve chain tension.

[0098] The telescopic tail 100 proposed in this utility model is a split type telescopic tail 100. By dividing the movable groove 120 into a front movable groove and a rear movable groove, during the pushing process of the movable groove 120, the separation and merging of the front movable groove and the rear movable groove are controlled to form a maintenance space 170 between the movable grooves 120. This facilitates the maintenance of the middle plate, the cleaning of coal sludge in the fixed groove 110, and the treatment of scrapers that are stuck in the fixed groove 110.

[0099] like Figure 1 As shown, when the telescopic tail section 100 needs to create a maintenance space 170, the hydraulic cylinder extends the integral movable groove 120 according to its own stroke, removing the bolts, nuts 142, and washers between the front and rear movable grooves. Since the push seat 160 on the movable groove 120 is located in the rear movable groove, the hydraulic cylinder is then retracted. The front movable groove will not be affected by the retraction force of the hydraulic cylinder and will remain in place. The rear movable groove will be pulled back as the hydraulic cylinder retracts. After the hydraulic cylinder retracts and pulls back, the front and rear movable grooves will separate, thus creating the maintenance space 170.

[0100] like Figure 5As shown, when the scraper conveyor telescopic tail 100 needs to close the maintenance space 170, the hydraulic cylinder extends the rear movable groove according to its own stroke, and installs the bolts, nuts 142 and washers between the front and rear movable grooves. After installation, the movable groove 120 will be pulled back as the hydraulic cylinder retracts. After the hydraulic cylinder retracts, the maintenance space 170 between the front and rear movable grooves disappears, and the telescopic tail 100 can be used normally.

[0101] In summary, the telescopic tail 100 of this utility model adopts a split structure. By dividing the movable groove 120 into a front movable groove and a rear movable groove, during the movement of the movable groove 120, the separation and merging of the front and rear movable grooves are controlled to form a maintenance space 170 between the movable grooves 120. This facilitates the maintenance of the middle plate, the cleaning of coal sludge in the fixed groove 110, and the treatment of scrapers stuck in the fixed groove 110. The purpose of maintenance can be achieved without disassembling the entire telescopic tail 100 or cutting the middle plate, which reduces workload and saves costs.

[0102] In some embodiments of this utility model, a transport aircraft is proposed, which includes a telescopic tail 100 as in any of the above embodiments.

[0103] In this embodiment, the transport aircraft proposed by this utility model, because it includes the telescopic tail 100 as in any of the above embodiments, has all the beneficial effects of the telescopic tail 100 in any of the above embodiments.

[0104] Specifically, the conveyor can be a scraper conveyor, such as a flexible scraper conveyor or a telescopic scraper conveyor, mainly to realize the continuous transportation of coal or materials. The telescopic tail 100 proposed in this utility model is a key component of the scraper conveyor. Through the cooperation of the split movable trough and the telescopic part 150, it effectively solves the problem of difficult underground maintenance and is suitable for various scraper conveyors that require frequent length adjustment and efficient maintenance.

[0105] In this utility model, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" 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.

[0106] 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.

[0107] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A telescopic tail section (100) for use in a transport aircraft, characterized in that, include: Fixed groove (110); A movable slot (120) is movably disposed in the fixed slot (110), the movable slot (120) comprising: First groove (122); The second groove (130) is detachably connected to the first groove (122); A telescopic part (150) is disposed in the fixed groove (110) and connected to the first groove body (122). The telescopic part (150) can drive the first groove body (122) to move relative to the fixed groove (110). The telescopic tail (100) has a maintenance state. In the maintenance state, the first groove (122) is disconnected from the second groove (130), and the telescopic part (150) drives the first groove (122) away from the second groove (130), forming a maintenance space (170) between the first groove (122) and the second groove (130).

2. The telescopic tail section (100) according to claim 1, characterized in that, The movable slot (120) also includes: A connector (140) is connected to the first groove (122) and the second groove (130) respectively, so as to realize the detachable connection between the first groove (122) and the second groove (130).

3. The telescopic tail section (100) according to claim 2, characterized in that, The first groove (122) is provided with a first through hole (126), the second groove (130) is provided with a second through hole (134), and the connector (140) includes: A bolt, the bolt passing through the first through hole (126) and the second through hole (134); Nut (142), which is threadedly connected to the bolt and abuts against the side wall of the first groove (122).

4. The telescopic tail section (100) according to claim 3, characterized in that, The connector (140) further includes: A washer is fitted onto the bolt and located between the nut (142) and the side wall of the first groove (122).

5. The telescopic tail section (100) according to claim 2 or 3, characterized in that, The first groove (122) is provided with a third through hole (128), and the connector (140) further includes: A connecting pin (144) is disposed in the second groove (130), and one end of the connecting pin (144) facing away from the second groove (130) is disposed in the third through hole (128).

6. The telescopic tail section (100) according to claim 3, characterized in that, The first groove (122) includes a first connecting end plate (124), and the first connecting end plate (124) is provided with the first through hole (126); The second groove (130) includes a second connecting end plate (132), and the second connecting end plate (132) has a second through hole (134).

7. The telescopic tail section (100) according to claim 1, characterized in that, The telescopic portion (150) includes: Telescopic cylinder (152), the telescopic cylinder (152) includes a cylinder body (154) and a piston rod (156), the cylinder body (154) is fixedly disposed on the side wall of the fixing groove (110); A piston rod (156) has one end extending into the cylinder (154) and the other end connected to the first groove (122); The telescopic cylinder (152) drives the first groove (122) to move relative to the fixed groove (110) by the extension and retraction of the piston rod (156).

8. The telescopic tail section (100) according to claim 7, characterized in that, The first groove (122) is provided with a pusher seat (160), and the other end of the piston rod (156) is connected to the pusher seat (160).

9. The telescopic tail section (100) according to claim 1, characterized in that, The fixing groove (110) includes: A middle plate, which extends along the length direction of the fixing groove (110); Two side plates are respectively connected to both sides of the middle plate; The middle plate and the two side plates limit the movable groove (120) assembled in the fixed groove (110), so that the movable groove (120) moves along the length direction of the fixed groove (110).

10. A transport aircraft, characterized in that, include: The telescopic tail (100) as described in any one of claims 1 to 9.

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