Bottom guard plate structure and mine car

Abstract

The utility model belongs to the technical field of mine cars, and discloses a bottom guard plate structure and a mine car, the bottom guard plate structure comprises a guard plate body, a fixing bolt and a sling, the guard plate body is provided with a hinged end hinged to a car frame and a fixed end opposite to the hinged end, the fixing bolt is arranged at the fixed end, the fixing bolt can be in threaded connection with the car frame, and the sling is fixed to the car frame. The fixing bolt is in threaded connection with the vehicle frame at the closing position, the fixing bolt is separated from the vehicle frame, and the protection plate body rotates around the hinged end to the opening position with the maximum opening angle under the action of self gravity, one end of the sling is connected to the fixed end, and the other end of the sling is connected to the vehicle frame. After the fixing bolt is separated from the frame, the sling can limit the guard plate body between the closing position and the opening position, so that the situation that the falling distance of the guard plate body is large due to the fact that the fixing bolt is separated from the frame, and a worker is hurt is greatly avoided. And therefore, the safety of the worker during disassembly of the bottom protection plate structure is improved.

Description

Technical Field

[0001] This application belongs to the technical field of mining cars, specifically relating to a bottom guard plate structure and a mining car. Background Technology

[0002] Mining cars are heavy-duty transport equipment specifically designed for harsh working conditions such as mines and quarries. They are mainly used to transport materials such as ore, coal, and earth. The engine, as the core component of a mining car, is generally mounted on the frame. The oil pan, being the lowest point of the engine, is easily damaged when the car travels on uneven surfaces. Therefore, to protect the engine, a bottom guard plate is usually installed at the bottom of the frame, located below the engine. This bottom guard plate protects the engine, reducing the failure rate of the mining car and ensuring its normal operation.

[0003] Currently, underbody protection plates are typically installed on the bottom of the vehicle frame in two ways. One method involves fixing both ends of the underbody protection plate to the frame with bolts. While this protects the engine, it requires multiple workers to lift it during installation and removal, thus affecting the ease of installation and removal. The other method involves connecting one end of the underbody protection plate to the frame via a hinge and the other end to the frame with bolts. Although this method facilitates installation and removal to some extent, the underbody protection plate may suddenly rotate under its own weight when the bolts are separated from the frame, affecting the safety of workers during disassembly. Utility Model Content

[0004] This application provides a bottom protection plate structure to improve the safety of workers when disassembling the bottom protection plate.

[0005] The technical solution adopted in this application is as follows:

[0006] A bottom guard plate structure includes a guard plate body, a fixing bolt, and a sling. The guard plate body has a hinged end hinged to a vehicle frame and a fixed end opposite to the hinged end. The fixing bolt is located at the fixed end and can be threaded to the vehicle frame, so that the guard plate body has a closed position where the fixing bolt is threaded to the vehicle frame and an open position where the fixing bolt is separated from the vehicle frame and the guard plate body rotates around the hinged end to the maximum opening angle under its own weight. One end of the sling is connected to the fixed end, and the other end of the sling is connected to the vehicle frame, so that after the fixing bolt is separated from the vehicle frame, the sling can confine the guard plate body between the closed position and the open position.

[0007] By adopting the above technical solution, since the hinged end of the skid plate body in this application is hinged to the vehicle frame and the fixed end is connected to the vehicle frame by fixing bolts, the difficulty of disassembling and assembling the bottom skid plate structure is reduced compared to the solution where both ends of the skid plate body are connected to the vehicle frame by bolts, thereby improving the convenience of disassembling and assembling the bottom skid plate structure.

[0008] When inspecting or maintaining the engine of a mining car equipped with the bottom guard plate structure described in this application, the fixing bolts are first separated from the frame. Then, the fixed end of the guard plate body rotates downward around the hinge end under its own weight. Since the two ends of the sling are connected to the frame and the fixed end respectively, the rotation of the guard plate body around the hinge end will drive the sling to move. When the sling is in a taut state, the guard plate body cannot continue to rotate. Thus, the sling is used to limit the guard plate body between the closed and open positions, which greatly avoids the situation where the guard plate body falls a large distance due to the separation of the fixing bolts from the frame, which could cause injury to the workers. This increases the safety of workers when disassembling the bottom guard plate structure.

[0009] Optionally, one end of the sling is fixedly connected to the vehicle frame, and the other end of the sling is detachably connected to the fixed end.

[0010] By adopting the above technical solution, since one end of the sling is fixedly connected to the vehicle frame and the other end is detachably connected to the fixed end, the skid plate body can rotate around its hinged end until the sling is in a taut state. Then, the sling can be separated from the fixed end, allowing the skid plate to continue rotating toward the open position, thus ensuring that it is convenient for workers to inspect the engine. Compared with the solution where the sling is detachably connected to the vehicle frame, this reduces the difficulty of operation for workers and ensures the efficiency of workers in disassembling and assembling the underbody skid plate structure.

[0011] Optionally, the guard plate body has a hidden side facing the engine and an exposed side opposite to the hidden side. The fixed end of the hidden side is provided with a connecting frame, and the sling is provided with a connecting part, which is detachably connected to the connecting frame.

[0012] By adopting the above technical solution, the efficiency of disassembling and assembling the bottom guard plate structure is further reduced because the connecting part is detachably connected to the connecting frame; at the same time, the connection stability between the sling and the guard plate body is increased because the connecting part is connected to the connecting frame located on the guard plate body.

[0013] Optionally, the connecting frame includes a connecting piece, the connecting portion has a receiving hole through which the connecting piece passes, the connecting piece is provided with a pin hole, an O-pin passes through the pin hole, and the O-pin is located on the outside of the connecting portion.

[0014] By adopting the above technical solution, when separating the sling from the guard plate body, the O-pin is first removed from the connecting piece, and then a force is applied to the connecting part of the sling in the direction away from the connecting frame to separate the connecting part from the connecting piece, thus completing the separation of the sling from the guard plate body; when connecting the sling to the guard plate body, the guard plate body is first moved towards the closed position. When the guard plate body moves to the position where the sling can be connected to the connecting piece, a force is applied to the connecting part of the sling in the direction of the connecting frame to make the connecting part fit over the outside of the connecting piece. Then the O-pin is installed on the connecting piece to block the connecting part, thereby ensuring the connection stability between the sling and the connecting piece.

[0015] Optionally, the hidden side is provided with a protrusion having a downward-opening receiving cavity, and the bolt head of the fixing bolt is located in the receiving cavity.

[0016] By adopting the above technical solution, since the bolt head of the fixing bolt is located in the accommodating cavity, the bolt head of the fixing bolt can be hidden, thereby protecting the fixing bolt with the protective plate body to avoid damage to the fixing bolt or the inability to separate it from the frame due to the bolt head being bumped.

[0017] Optionally, the protrusions are spaced apart in multiples, and the connecting frame further includes a fixing piece fixedly connected to the hidden side. The connecting piece is disposed on the fixing piece, and the fixing piece is fixedly connected to the multiple protrusions.

[0018] By adopting the above technical solution, since the protrusions are spaced out in multiples, the fixing bolts are also spaced out in multiples, thereby increasing the fixing points on the protective plate body and improving the fixing stability of the protective plate body. Furthermore, since the fixing plates are fixedly connected to multiple protrusions, the fixing plates can be used to increase the connection strength between the protrusions and the protective plate body, thereby increasing the stability of the protrusions and further ensuring the fixing effect of the fixing bolts on the protective plate body.

[0019] Optionally, the bottom of the connecting piece is provided with a limiting protrusion, which is spaced apart from the fixing piece and can accommodate the connecting part.

[0020] By adopting the above technical solution, since the bottom of the connecting piece is provided with a limiting protrusion, and the limiting protrusion is spaced apart from the fixing piece and can accommodate the connecting part, the limiting protrusion can be used to block the connecting part, thereby increasing the connection stability between the sling and the guard plate body, and further increasing the safety of the workers when opening the bottom guard plate structure.

[0021] Optionally, at least a portion of the guard plate body protrudes in a direction away from the engine and forms an outward protrusion, at least a portion of the fixing piece is located on the outward protrusion, the fixing piece is provided with an avoidance notch, and a drain hole is formed between the avoidance notch and the outward protrusion.

[0022] By adopting the above technical solution, since at least a portion of the guard plate body protrudes in the direction away from the engine, on the one hand, the guard plate body can adapt to the bottom shape of the engine to ensure the protective effect of the guard plate body on the engine; on the other hand, it can also increase the structural strength of the guard plate body to further ensure the protective effect of the guard plate body on the engine, and also improve the passability of the mining car.

[0023] Optionally, the guard plate body has a hidden side facing the engine, and the hidden side is provided with a plurality of reinforcing ribs at intervals;

[0024] And / or, the guard plate body is provided with an inspection port, the inspection port is provided corresponding to the engine drain port, and the guard plate body is provided with an inspection cover for sealing the inspection port.

[0025] By adopting the above technical solution, since multiple reinforcing ribs are set at intervals on the hidden side, on the one hand, the structural strength of the guard plate body can be increased by the reinforcing ribs to improve the protection effect of the guard plate body on the engine. On the other hand, the passability of the mine car can also be guaranteed to avoid the situation where the passability of the mine car is affected because the reinforcing ribs are set on the side of the guard plate body away from the engine.

[0026] Because the access panel is positioned to correspond to the engine's drain plug, and the guard plate itself has an access cover for sealing the access panel, when draining the engine oil, the access cover can be opened before operating the engine's drain plug, allowing the engine to fall through the access panel. This avoids the need to open the guard plate itself when draining the engine oil, thus facilitating the draining of the engine oil.

[0027] This application also discloses a mining car to improve the safety of workers when overhauling the engine of the mining car.

[0028] A mining car includes a frame, an engine disposed on the frame, and a bottom guard structure as described above, the bottom guard structure being disposed on the frame and located below the engine.

[0029] By adopting the above technical solution, since the mining car in this application includes the aforementioned bottom protection plate structure, the safety of workers when disassembling the bottom protection plate structure is increased while ensuring the protection effect on the engine.

[0030] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0031] 1. The underbody protection structure in this application includes a protection plate body, fixing bolts, and a sling. The protection plate body has a hinge end that is hinged to the vehicle frame and a fixed end opposite to the hinge end. The fixing bolts are located at the fixed end and can be threaded to the vehicle frame, so that the protection plate body has a closed position where the fixing bolts are threaded to the vehicle frame and an open position where the fixing bolts are separated from the vehicle frame and the protection plate body rotates around the hinge end to the maximum opening angle under its own weight. One end of the sling is connected to the fixed end, and the other end of the sling is connected to the vehicle frame, so that after the fixing bolts are separated from the vehicle frame, the sling can limit the protection plate body between the closed and open positions, thereby greatly avoiding the situation where the protection plate body falls a large distance due to the separation of the fixing bolts from the vehicle frame, which could cause injury to the workers. This increases the safety of workers when disassembling the underbody protection structure.

[0032] 2. In this application, one end of the sling is fixedly connected to the vehicle frame, and the other end of the sling is detachably connected to the fixed end. This allows the skid plate body to rotate around its hinged end until the sling is in a taut state. Then, the sling can be separated from the fixed end, allowing the skid plate to continue rotating toward the open position, thus facilitating engine maintenance by the staff. Compared to a solution where the sling is detachably connected to the vehicle frame, this reduces the operational difficulty for the staff and ensures the efficiency of disassembling and assembling the underbody skid plate structure.

[0033] 3. The skid plate body in this application has a hidden side facing the engine and an exposed side opposite to the hidden side. The fixed end of the hidden side is provided with a connecting frame, and the sling is provided with a connecting part. The connecting part is detachably connected to the connecting frame, which further reduces the efficiency of disassembling and assembling the bottom skid plate structure. At the same time, since the connecting part is connected to the connecting frame provided on the skid plate body, the connection stability between the sling and the skid plate body is increased. Attached Figure Description

[0034] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0035] Figure 1 This is a schematic diagram of the bottom protective plate structure according to one embodiment of this application;

[0036] Figure 2 This is a schematic diagram of the state of the underbody when the underbody structure described in one embodiment of this application is connected to the vehicle frame and the fixing bolts are separated from the vehicle frame and the sling is in a tensioned state.

[0037] Figure 3This is a schematic diagram of the state of the underbody when the underbody structure described in one embodiment of this application is connected to the vehicle frame and the fixing bolts are separated from the vehicle frame and the sling is separated from the underbody.

[0038] Figure label:

[0039] 1. Guard plate body; 11. Protrusion; 12. Drain hole; 13. Reinforcing rib; 14. Inspection cover; 2. Fixing bolt; 3. Lifting sling; 4. Connecting frame; 41. Connecting piece; 411. Pin; 42. Fixing piece. Detailed Implementation

[0040] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

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

[0042] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. 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 can be combined in any suitable manner in one or more embodiments or examples.

[0045] Reference Figures 1 to 3 A bottom guard plate structure is disclosed, which includes a guard plate body 1, a fixing bolt 2, and a sling 3. The guard plate body 1 has a hinge end that is hinged to the vehicle frame and a fixed end opposite to the hinge end. The fixing bolt 2 is located at the fixed end and can be threaded to the vehicle frame, so that the guard plate body 1 has a closed position where the fixing bolt 2 is threaded to the vehicle frame and an open position where the fixing bolt 2 is separated from the vehicle frame and the guard plate body 1 rotates around the hinge end to the maximum opening angle under its own weight. One end of the sling 3 is connected to the fixed end and the other end of the sling 3 is connected to the vehicle frame, so that after the fixing bolt 2 is separated from the vehicle frame, the sling 3 can limit the guard plate body 1 between the closed position and the open position.

[0046] Since the hinged end of the skid plate body 1 in this application is hinged to the vehicle frame and the fixed end is connected to the vehicle frame by fixing bolts 2, compared with the scheme where both ends of the skid plate body 1 are connected to the vehicle frame by bolts, the difficulty of disassembling and assembling the bottom skid plate structure is reduced, thereby improving the convenience of disassembling and assembling the bottom skid plate structure.

[0047] When inspecting or maintaining the engine of a mining car equipped with the bottom guard plate structure described in this application, the fixing bolt 2 is first separated from the frame. Then, the fixed end of the guard plate body 1 rotates downward around the hinge end under its own weight. Since the two ends of the sling 3 are connected to the frame and the fixed end respectively, the rotation of the guard plate body 1 around the hinge end will drive the sling 3 to move. When the sling 3 is in a tensioned state, the guard plate body 1 cannot continue to rotate. Thus, the sling 3 is used to limit the guard plate body 1 between the closed position and the open position, which greatly avoids the situation where the guard plate body 1 falls a large distance due to the separation of the fixing bolt 2 from the frame, which could cause injury to the workers. This increases the safety of workers when disassembling the bottom guard plate structure.

[0048] This application does not specify the connection method between the sling 3 and the vehicle frame and the fixed end. Preferably, one end of the sling 3 is fixedly connected to the vehicle frame, and the other end of the sling 3 is detachably connected to the fixed end.

[0049] It should be noted that the phrase "the other end of the sling 3 can be detachably connected to the fixed end" means that the sling 3 can be separated from the guard plate body 1.

[0050] Since one end of the sling 3 is fixedly connected to the frame and the other end of the sling 3 is detachably connected to the fixed end, the skid plate body 1 can rotate around its hinge end until the sling 3 is in a tensioned state. Then the sling 3 can be separated from the fixed end so that the skid plate can continue to rotate toward the open position, thus ensuring that the staff can easily inspect the engine. Compared with the solution where the sling 3 is detachably connected to the frame, this reduces the difficulty of operation for the staff and ensures the efficiency of the staff in disassembling and assembling the underbody skid plate structure.

[0051] This application does not specify the detachable connection method between the sling 3 and the guard plate body 1. Preferably, refer to Figure 1 The guard plate body 1 has a hidden side facing the engine and an exposed side opposite to the hidden side. The fixed end of the hidden side is provided with a connecting frame 4, and the sling 3 is provided with a connecting part, which is detachably connected to the connecting frame 4.

[0052] Understandably, the exposed side refers to the side of the guard plate body 1 that is away from the engine.

[0053] Since the connecting part is detachably connected to the connecting frame 4, the efficiency of disassembling and assembling the bottom guard plate structure is further reduced; at the same time, since the connecting part is connected to the connecting frame 4 located on the guard plate body 1, the connection stability between the sling 3 and the guard plate body 1 is increased.

[0054] Furthermore, refer to Figure 1 The connecting frame 4 includes a connecting piece 41. The connecting part has a receiving hole through which the connecting piece 41 passes. The connecting piece 41 is provided with a pin hole, and an O-pin passes through the pin hole. The O-pin is located on the outside of the connecting part.

[0055] When separating the sling 3 from the guard plate body 1, first remove the O-pin from the connecting piece 41, and then apply a force to the connecting part of the sling 3 in a direction away from the connecting frame 4 to separate the connecting part from the connecting piece 41, thus completing the separation of the sling 3 from the guard plate body 1. When connecting the sling 3 to the guard plate body 1, first move the guard plate body 1 towards the closed position. When the guard plate body 1 moves to the position where the sling 3 can be connected to the connecting piece 41, apply a force to the connecting part of the sling 3 in the direction of the connecting frame 4 to make the connecting part fit over the outside of the connecting piece 41. Then install the O-pin on the connecting piece 41 to block the connecting part, thereby ensuring the connection stability between the sling 3 and the connecting piece 41.

[0056] This application does not specifically limit the structure of the sling 3. Preferably, the sling 3 is a steel chain, with the bottommost ring of the steel chain forming the connecting part. In other embodiments, the sling 3 can also be a steel wire rope, with one end of the steel wire rope folded back and fixedly connected to the main body of the steel wire rope to form the connecting part.

[0057] In other implementation examples, a hook can be provided at the end of the sling 3, and a hole structure for the hook to be attached can be provided at the fixed end of the guard plate body 1, so as to realize the detachable connection between the sling 3 and the guard plate body 1 by attaching the hook to the guard plate body 1.

[0058] Furthermore, refer to Figure 1 The hidden side is provided with a protrusion 11, which has a downward-opening receiving cavity. The bolt head of the fixing bolt 2 is located in the receiving cavity, thereby enabling the bolt head of the fixing bolt 2 to be hidden. This allows the guard plate body 1 to protect the fixing bolt 2, preventing the fixing bolt 2 from being damaged or unable to be separated from the frame due to the bolt head being bumped.

[0059] This application does not specifically limit the structure of the protrusion 11. Preferably, the protrusion 11 is formed as a box-shaped structure on the guard plate body 1 to increase the connection stability between the protrusion 11 and the guard plate body 1. In other embodiments, the protrusion 11 may also be a structure formed by the guard plate body 1 being recessed towards the engine.

[0060] Furthermore, refer to Figure 1 The protrusions 11 are spaced out in multiples. The connecting frame 4 also includes a fixing piece 42 fixedly connected to the hidden side. The connecting piece 41 is disposed on the fixing piece 42, and the fixing piece 42 is fixedly connected to the multiple protrusions 11.

[0061] It is understandable that the fixing bolts 2 and the protrusions 11 are set in a one-to-one correspondence.

[0062] Since there are multiple protrusions 11 spaced apart, there are also multiple fixing bolts 2 spaced apart, which increases the number of fixing points for the guard plate body 1, thereby improving the fixing stability of the guard plate body 1. Furthermore, since the fixing piece 42 is fixedly connected to multiple protrusions 11, the fixing piece 42 can be used to increase the connection strength between the protrusions 11 and the guard plate body 1, thereby increasing the stability of the protrusions 11, and further ensuring the fixing effect of the fixing bolts 2 on the guard plate body 1.

[0063] Specifically, the connecting piece 41 is located on the side of the fixing piece 42 away from the hinge end, so as to further facilitate the separation of the sling 3 from the connecting piece 41 by the workers. At the same time, the top view projection of the connecting piece 41 is located inside the guard plate body 1, so that the side of the fixing piece 42 away from the hinge end can accommodate the sling 3, so as to avoid the sling 3 and the fixing piece 42 interfering with each other and affecting the fixing of the guard plate body 1.

[0064] The better one is to refer to Figure 1 There are two protrusions 11 and two fixing bolts 2 corresponding to the protrusions 11. The two ends of the fixing plate 42 are respectively connected to the two protrusions 11 to ensure the connection stability between the protrusions 11 and the guard plate body 1, and at the same time ensure the fixing point of the guard plate body 1 to increase the connection stability between the guard plate body 1 and the vehicle frame.

[0065] Furthermore, the bottom of the connecting piece 41 is provided with a limiting protrusion. The limiting protrusion is spaced apart from the fixing piece 42 and can accommodate the connecting part. The limiting protrusion can then block the connecting part to increase the connection stability between the sling 3 and the guard plate body 1, thereby further increasing the safety of the workers when opening the bottom guard plate structure.

[0066] Furthermore, at least a portion of the guard plate body 1 is protruding in the direction away from the engine and forms an outward protrusion. At least a portion of the fixing piece 42 is located on the outward protrusion. The fixing piece 42 is provided with an avoidance notch, and a drain hole 12 is formed between the avoidance notch and the outward protrusion.

[0067] Since at least a portion of the guard plate body 1 protrudes in the direction away from the engine, on the one hand, the guard plate body 1 can adapt to the bottom shape of the engine to ensure the protective effect of the guard plate body 1 on the engine; on the other hand, it can also increase the structural strength of the guard plate body 1 to further ensure the protective effect of the guard plate body 1 on the engine, and also improve the passability of the mining car.

[0068] In addition, since at least a portion of the fixing plate 42 is located in the protruding part, the protruding part can be used to increase the structural strength of the guard plate body 1, so as to further ensure the protective effect of the bottom guard plate structure on the engine.

[0069] Meanwhile, since a drainage hole 12 is formed between the clearance gap and the protrusion, rainwater or dust moving to the hidden side can be discharged through the drainage hole 12 to reduce the load on the mine car. At the same time, it avoids the situation where dust or rainwater contaminates the workers' clothes when disassembling the bottom protection plate structure, thereby improving the workers' experience in disassembling the bottom protection plate structure.

[0070] Preferably, the depth of the protrusion gradually increases along the direction from the hinge end to the fixed end, thereby allowing rainwater or dust on the hidden side to move along the protrusion toward the fixed end, so as to ensure that rainwater or dust can move to the fixed end through the drain hole 12 and be discharged from the hidden side.

[0071] In other embodiments, one end of the sling 3 can be fixedly connected to the fixed end of the guard plate body 1, and the other end of the sling 3 can be detachably connected to the vehicle frame.

[0072] In a preferred embodiment, refer to Figure 1 and Figure 2 The guard plate body 1 has a hidden side facing the engine, and multiple reinforcing ribs 13 are arranged at intervals on the hidden side. On the one hand, the reinforcing ribs 13 can be used to increase the structural strength of the guard plate body 1 to improve the protection effect of the guard plate body 1 on the engine. On the other hand, it can also ensure the passability of the mine car to avoid the situation where the passability of the mine car is affected because the reinforcing ribs 13 are set on the side of the guard plate body 1 away from the engine.

[0073] The better one is to refer to Figure 1 A drainage hole 12 is also formed between the reinforcing rib 13 and the concealed side to ensure that rainwater or dust on the concealed side can move along the protrusion to the outside of the protective plate body 1.

[0074] In a preferred embodiment, refer to Figure 1 and Figure 2 The guard plate body 1 is provided with an inspection port, which is set to correspond to the oil drain port of the engine, and the guard plate body 1 is provided with an inspection cover 14 for sealing the inspection port.

[0075] Since the inspection port is set to correspond to the engine's drain port, and the guard plate body 1 is equipped with an inspection cover 14 for sealing the inspection port, when draining the engine oil, the inspection cover 14 can be opened, and then the engine drain port can be operated to allow the engine to fall through the inspection port, thereby avoiding the need to open the guard plate body 1 when draining the engine oil, thus achieving the effect of facilitating the draining of engine oil.

[0076] This application does not specifically limit the connection method between the inspection cover 14 and the protective plate body 1. Preferably, one end of the inspection cover 14 is hinged to the protective plate body 1, and the other end of the inspection cover 14 is provided with a flat lock for locking the inspection cover 14 to increase the stability of the inspection cover 14. In other embodiments, the inspection cover 14 can also be fixedly connected to the protective plate body 1 by bolts or screws.

[0077] This application does not specify the articulation method between the articulated end and the frame. Preferably, the articulated end is provided with an articulation shaft, the frame is welded with a mounting tube, and the articulation shaft extends into the mounting tube to achieve the articulation between the articulated end and the frame.

[0078] Preferably, the frame is equipped with a front bumper, and the mounting tube is welded to the bottom of the front bumper so that the underbody protection structure extends from the front bumper to the rear, thereby improving the underbody protection structure's protective effect on the engine.

[0079] In other embodiments, the hinged end may also be hinged to the frame via a hinge.

[0080] This application also discloses a mining car, which includes a frame, an engine mounted on the frame, and a bottom guard structure as described above, wherein the bottom guard structure is mounted on the frame and located below the engine.

[0081] Since the mining car in this application includes the aforementioned underbody protection structure, it not only ensures the protection of the engine but also increases the safety of workers when disassembling the underbody protection structure.

[0082] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0083] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0084] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A bottom protective plate structure, characterized in that, The system includes a guard plate body (1), a fixing bolt (2), and a sling (3). The guard plate body (1) has a hinge end that is hinged to the frame and a fixed end opposite to the hinge end. The fixing bolt (2) is located at the fixed end and can be threaded to the frame so that the guard plate body (1) has a closed position where the fixing bolt (2) is threaded to the frame and an open position where the fixing bolt (2) is separated from the frame and the guard plate body (1) rotates around the hinge end to the maximum opening angle under its own weight. One end of the sling (3) is connected to the fixed end and the other end of the sling (3) is connected to the frame so that after the fixing bolt (2) is separated from the frame, the sling (3) can limit the guard plate body (1) between the closed position and the open position.

2. The bottom protective plate structure according to claim 1, characterized in that, One end of the sling (3) is fixedly connected to the vehicle frame, and the other end of the sling (3) is detachably connected to the fixed end.

3. The bottom protective plate structure according to claim 2, characterized in that, The guard plate body (1) has a hidden side facing the engine and an exposed side opposite to the hidden side. The fixed end of the hidden side is provided with a connecting frame (4), and the sling (3) is provided with a connecting part. The connecting part is detachably connected to the connecting frame (4).

4. The bottom protective plate structure according to claim 3, characterized in that, The connecting frame (4) includes a connecting piece (41), the connecting part has a receiving hole through which the connecting piece (41) passes, the connecting piece (41) is provided with a pin hole, an O-pin is provided in the pin hole, and the O-pin is located on the outside of the connecting part.

5. A bottom protective plate structure according to claim 4, characterized in that, The hidden side is provided with a protrusion (11), the protrusion (11) has a downward-opening receiving cavity, and the bolt head of the fixing bolt (2) is located in the receiving cavity.

6. A bottom protective plate structure according to claim 5, characterized in that, The protrusions (11) are spaced apart and multiple. The connecting frame (4) also includes a fixing piece (42) fixedly connected to the hidden side. The connecting piece (41) is disposed on the fixing piece (42) and the fixing piece (42) is fixedly connected to multiple protrusions (11).

7. A bottom protective plate structure according to claim 6, characterized in that, The bottom of the connecting piece (41) is provided with a limiting protrusion, which is spaced apart from the fixing piece (42) and can accommodate the connecting part.

8. A bottom protective plate structure according to claim 6, characterized in that, At least a portion of the guard plate body (1) is provided to protrude in the direction away from the engine and form an outward protrusion. At least a portion of the fixing piece (42) is located on the outward protrusion. The fixing piece (42) is provided with an avoidance notch. A drain hole (12) is formed between the avoidance notch and the outward protrusion.

9. A bottom protective plate structure according to any one of claims 1-8, characterized in that, The guard plate body (1) has a hidden side facing the engine, and the hidden side is provided with a plurality of reinforcing ribs (13) at intervals; And / or, the guard plate body (1) is provided with an inspection port, the inspection port is provided with an oil drain port of the engine, and the guard plate body (1) is provided with an inspection cover (14) for sealing the inspection port.

10. A mining car, characterized in that, The vehicle includes a frame, an engine mounted on the frame, and a bottom guard structure as described in any one of claims 1-9, the bottom guard structure being mounted on the frame and located below the engine.

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