Material transport vehicle

Abstract

The utility model belongs to the technical field of material conveying equipment, and discloses a material transport vehicle. The material transport vehicle comprises a vehicle body, a cable and an anti-dragging device, the cable is connected with the vehicle body and comprises a plug, and the plug can be connected with an external power source; the anti-dragging device comprises an electric mortise lock assembly and a pull rod assembly, the electric mortise lock assembly is connected with the vehicle body, the pull rod assembly is movably connected with the vehicle body, the electric mortise lock assembly is electrically connected with the cable, and the electric mortise lock assembly is used for locking the pull rod assembly in the state that the pull rod assembly abuts against the ground. According to the material transport vehicle, impact on the plug and an external power supply caused by huge inertia generated by dragging the vehicle body when the plug is not pulled out is avoided, and potential safety hazards of electricity utilization are eliminated.

Description

Technical Field

[0001] This utility model relates to the field of material conveying equipment technology, and in particular to a material transport vehicle. Background Technology

[0002] In the cigarette manufacturing workshop, the feeding cart is a key piece of equipment for conveying materials to the shredder. The feeding cart is powered by a quick-connect socket and requires an external power source during use. After production is completed, the plug must be unplugged for cleaning and maintenance.

[0003] However, during maintenance of the feeding trolley, on-site staff often negligently drag the trolley without unplugging it. Due to the trolley's large mass, the immense inertia generated during dragging can impact the plug and external power source, potentially affecting internal wiring and creating electrical safety hazards. Currently, a steel wire cable shorter than the cable is fixed between the trolley and the plug to prevent stress on the cable during negligent dragging. However, due to the trolley's large mass, the steel wire cable is insufficient to protect the cable under the immense inertia during dragging, causing impact on the plug and external power source. Utility Model Content

[0004] The purpose of this utility model is to provide a material transport vehicle that avoids the impact on the plug and external power source caused by the huge inertia generated when the plug is not unplugged, thus eliminating potential electrical safety hazards.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A material transport vehicle, comprising:

[0007] Vehicle body;

[0008] A cable, connected to the vehicle body, the cable including a plug capable of connecting to an external power source;

[0009] The anti-drag device includes an electric lock assembly and a pull rod assembly. The electric lock assembly is connected to the vehicle body, the pull rod assembly is movably connected to the vehicle body, and the electric lock assembly is electrically connected to the cable. The electric lock assembly is used to lock the pull rod assembly in a state where the pull rod assembly is pressed against the ground.

[0010] As an optional solution for a material transport vehicle, the pull rod assembly includes a locking rod that is movably connected to the vehicle body and has a locking hole. The electric bolt lock assembly includes an electric bolt lock with a bolt that can be inserted into the locking hole to lock the pull rod assembly.

[0011] As an alternative to a material transport vehicle, the tie rod assembly also includes a support rod and a first connecting shaft. The locking rod includes a push section and a locking section connected together. The locking section is rotatably connected to the vehicle body via the first connecting shaft, and the support rod is connected to the locking section.

[0012] As an optional solution for a material transport vehicle, the anti-drag device includes two electric bolt lock assemblies. The locking rod includes two locking sections. The two ends of the push section are connected to the two locking sections one by one. Both locking sections are provided with locking holes, and the locking holes correspond one-to-one with the electric bolt lock assemblies.

[0013] As an alternative to a material transport vehicle, the tie rod assembly also includes a second connecting shaft. The support rod has a first connecting hole, through which the second connecting shaft passes and is capable of moving horizontally relative to the first connecting hole.

[0014] As an optional solution for a material transport vehicle, the first connecting hole is an oblong hole, and the long axis of the oblong hole is set at an angle to the vertical direction.

[0015] As an optional solution for a material transport vehicle, the locking rod is rotatably connected to the support rod, the vehicle body includes a floor plate, the floor plate is provided with a guide hole, and the support rod passes through the guide hole.

[0016] As an alternative to a material transport vehicle, the support rod includes a connecting section and an abutting section connected together. The connecting section is connected to the locking rod, and the abutting section is capable of pressing against the ground. The cross-sectional area of ​​the abutting section is greater than or equal to the cross-sectional area of ​​the connecting section.

[0017] As an alternative to material transport vehicles, the end face of the contact section away from the connecting section is covered with a friction layer.

[0018] As an alternative to a material transport vehicle, the electric bolt lock assembly also includes a mounting base for connecting the electric bolt lock to the vehicle body.

[0019] Beneficial effects:

[0020] This utility model provides a material transport vehicle equipped with an anti-drag device consisting of an electric lock assembly and a pull rod assembly. The electric lock assembly is connected to the vehicle body, and the pull rod assembly is movably connected to the vehicle body. The electric lock assembly shares a power source with the vehicle body. When the plug is connected to an external power source, the electric lock assembly is energized and locks the pull rod assembly, causing the pull rod assembly to press against the ground. Thus, when the plug is not unplugged, the significant resistance generated by the pull rod assembly against the ground effectively restricts the movement of the vehicle body, preventing the huge inertial impact on the plug and external power source caused by directly dragging the vehicle body. When the plug is disconnected from the external power source, the electric lock assembly loses power and unlocks the pull rod assembly, allowing the operator to pull the pull rod assembly to separate it from the ground. At this point, the vehicle body can be moved normally for maintenance and other operations. This material transport vehicle avoids electrical safety hazards caused by workers negligently dragging the vehicle body without unplugging the plug, ensuring the safety of the plug, external power source, and internal wiring, while also guaranteeing the normal use and maintenance procedures of the material transport vehicle. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the material transport vehicle provided in this embodiment of the utility model;

[0022] Figure 2 yes Figure 1 A magnified view of position A in the middle;

[0023] Figure 3 This is a schematic diagram of the locking rod provided in an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the support rod provided in an embodiment of the present invention.

[0025] In the picture:

[0026] 1. Vehicle body; 11. Floor plate; 111. Guide hole;

[0027] 2. Anti-drag device;

[0028] 21. Electric bolt lock assembly; 211. Electric bolt lock; 212. Mounting base; 2111. Lock tongue;

[0029] 22. Pull rod assembly; 221. Locking rod; 222. Support rod; 223. First connecting shaft; 224. Second connecting shaft; 2211. Locking section; 2212. Hand-push section; 22111. Locking hole; 2221. Connecting section; 2222. Abutting section. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of the device. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper" and "lower," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] This embodiment provides a material transport vehicle, and the following description uses a feeding vehicle as an example. Figures 1-4 As shown, the feeding vehicle includes a vehicle body 1, a cable, and an anti-drag device 2. The cable is connected to the vehicle body 1 and includes a plug that can be connected to an external power source. The anti-drag device 2 includes an electric lock assembly 21 and a pull rod assembly 22. The electric lock assembly 21 is connected to the vehicle body 1, and the pull rod assembly 22 is movably connected to the vehicle body 1. The electric lock assembly 21 is electrically connected to the cable and is used to lock the pull rod assembly 22 in a state where the pull rod assembly 22 is pressed against the ground.

[0035] The electric bolt lock assembly 21 shares a power source with the vehicle body 1. When the plug is connected to an external power source, the electric bolt lock assembly 21 is energized and locks the pull rod assembly 22, causing the pull rod assembly 22 to press against the ground. This creates significant resistance between the pull rod assembly 22 and the ground when the plug is not unplugged, effectively limiting the movement of the vehicle body 1 and preventing the large inertial impact on the plug and external power source caused by directly dragging the vehicle body 1. When the plug is disconnected from the external power source, the electric bolt lock assembly 21 loses power and unlocks the pull rod assembly 22. Operators can then pull the pull rod assembly 22 to separate it from the ground, allowing the vehicle body 1 to move normally for maintenance and other operations. This feeding vehicle avoids electrical safety hazards caused by workers negligently dragging the vehicle body 1 without unplugging the plug, ensuring the safety of the plug, external power source, and internal wiring, while also guaranteeing the normal use and maintenance procedures of the feeding vehicle.

[0036] It is worth noting that, in addition to the feeding vehicle, the material transport vehicle can also be a tobacco transfer vehicle, an auxiliary material handling vehicle, etc. As long as the vehicle body 1 needs to be connected to an external power source when working, the anti-drag device 2 can be used to drag the vehicle body 1 without unplugging it, thereby damaging the plug, external power source and internal wiring, thus avoiding potential electrical safety hazards.

[0037] It is worth noting that the vehicle body 1 is used for feeding after the plug is connected to an external power source. The feeding process and vehicle body structure of the feeding vehicle are well known in the art, so their specific structure will not be described in detail here.

[0038] like Figure 1 and Figure 2 As shown, the pull rod assembly 22 includes a locking rod 221, which is movably connected to the vehicle body 1. The locking rod 221 has a locking hole 22111. The electric bolt lock assembly 21 includes an electric bolt lock 211, which includes a bolt 2111. The bolt 2111 can be inserted into the locking hole 22111 to lock the pull rod assembly 22. This structural design makes it simple and convenient for the bolt 2111 to engage with the locking hole 22111, enhancing the reliability and convenience of the anti-drag device 2 and improving the safety of the feeding vehicle.

[0039] like Figure 1 and Figure 3As shown, the lever assembly 22 also includes a support rod 222 and a first connecting shaft 223. The locking rod 221 includes a push section 2212 and a locking section 2211 connected together. The locking section 2211 is rotatably connected to the vehicle body 1 via the first connecting shaft 223. The support rod 222 is connected to the locking section 2211, and the connection position between the support rod 222 and the locking section 2211 is located between the first connecting shaft 223 and the push section 2212. The locking section 2211 is used to lock the vehicle body 1, and the push section 2212 is used to push the vehicle body 1 after unlocking. The push section 2212 facilitates pushing the vehicle body 1 after unlocking, improving operational convenience, allowing operators to apply force easily, reducing labor intensity, and maintaining a safe distance between personnel and the vehicle body 1. The locking section 2211 is dedicated to locking the vehicle body 1, making the function clear, the locking precise and reliable, and avoiding misoperation.

[0040] Specifically, the connection point between the support rod 222 and the locking rod 221 is closer to the first connecting shaft 223. Compared to the connection point between the support rod 222 and the locking rod 221 being closer to the push section 2212, this reduces the lever arm length required for the locking rod 221 to rotate. Based on the lever principle, this reduces the force applied by the operator during locking and unlocking, thus reducing operational difficulty and labor intensity. Simultaneously, this connection method makes the locking rod 221 more stable during rotation, ensuring that the axis of the support rod 222 remains as vertical as possible during lifting and lowering, reducing its swaying and offset when pressed against or separated from the ground, ensuring accurate insertion of the locking tongue 2111 into the locking hole 22111, and improving the accuracy and reliability of the anti-drag device 2. Furthermore, it makes the entire pull rod assembly 22 more compact, reducing its space occupation on the vehicle body 1 and optimizing the overall layout of the feeding vehicle.

[0041] Furthermore, such as Figure 1 and Figure 2 As shown, in this embodiment, the locking rod 221 is provided with a second connecting hole, and the vehicle body 1 is provided with a third connecting hole. The first connecting shaft 223 passes through the second connecting hole and the third connecting hole to allow the locking rod 221 to be rotatably connected to the vehicle body 1. This enables the locking rod 221 to rotate flexibly relative to the vehicle body 1, facilitating the pull rod assembly 22 to perform the action of pressing against or separating from the ground. At the same time, it improves the stability of the device, can better withstand resistance to ensure the normal operation of the anti-drag function, and has a simple structure that is easy to maintain and replace parts.

[0042] In another alternative embodiment, the locking rod 221 is provided with a groove (not shown in the figure), and the vehicle body 1 is provided with a slider (not shown in the figure). The slider cooperates with the groove to allow the locking rod 221 to slide slidably with the vehicle body 1. This allows the locking rod 221 to slide flexibly relative to the vehicle body 1 along a specific path (the wall of the groove), and during the sliding of the locking rod 221, the movement trajectory of the slider within the groove is limited, avoiding unnecessary shaking or deviation of the locking rod 221 and enhancing the stability of the connection between the entire tie rod assembly 22 and the vehicle body 1. In other embodiments, the locking rod 221 is provided with a slider, and the vehicle body 1 is provided with a groove. The slider cooperates with the groove to allow the locking rod 221 to slide slidably with the vehicle body 1.

[0043] like Figures 1-3 As shown, the anti-drag device 2 includes two electric bolt lock assemblies 21. The locking rod 221 includes two locking sections 2211. The two ends of the push section 2212 are connected to the two locking sections 2211 in a one-to-one correspondence. Both locking sections 2211 are provided with locking holes 22111, and the locking holes 22111 correspond one-to-one with the electric bolt lock assemblies 21. This enhances the locking reliability, makes the pull rod assembly 22 more stable against the ground, and better restricts the movement of the vehicle body 1; it also balances the force distribution, avoids deformation and damage of the locking rod 221, and extends the life of the device. Specifically, as... Figure 1 and Figure 3 As shown, the locking rod 221 is U-shaped, with its open end movably connected to the vehicle body 1. The U-shaped design avoids the sharpness at the connection between the locking section 2211 and the push section 2212, eliminating the risk of operators being cut. It also enhances the overall strength of the locking rod 221, reduces damage caused by frequent operation or external impact, lowers maintenance costs, and ensures the safe and stable operation of the feeding vehicle.

[0044] In this embodiment, the pull rod assembly 22 further includes a second connecting shaft 224. The support rod 222 has a first connecting hole, and the second connecting shaft 224 passes through the first connecting hole and can move horizontally relative to the first connecting hole. After the unlocking operation is completed, the operator lifts the locking rod 221, and the locking rod 221 will rotate upward at a certain angle relative to the horizontal direction. At this time, since the second connecting shaft 224 can move horizontally within the first connecting hole, it can effectively ensure that the support rod 222 moves up and down as vertically as possible. This allows the support rod 222 to fine-tune its position to better fit the ground when encountering uneven ground, enhancing the adaptability of the anti-drag device 2; it can also reduce interference when the locking rod 221 rotates, making the rotation smoother, protecting the structure of the pull rod assembly 22 and extending its service life; at the same time, it ensures the accuracy of locking and unlocking, which is conducive to the accurate cooperation between the locking tongue 2111 and the locking hole 22111 and the correct pressure or separation between the support rod 222 and the ground.

[0045] Specifically, the horizontal direction here refers to the second connecting shaft 224 having a degree of freedom of movement in the horizontal direction relative to the first connecting hole, rather than restricting its relative movement in other directions.

[0046] Furthermore, the first connecting hole is an oblong hole, and the long axis of the oblong hole is set at an angle to the vertical direction. This enhances the horizontal adjustment flexibility of the support rod 222, allowing it to adjust its position more flexibly to adapt to the ground under complex working conditions and ensure effective pressure resistance; it also optimizes the movement trajectory of the support rod during locking and unlocking, making its rotation more coordinated with that of the locking rod 221, reducing jamming and interference.

[0047] like Figure 1 As shown, the locking rod 221 and the support rod 222 are rotatably connected. The vehicle body 1 includes a base plate 11, which has a guide hole 111 through which the support rod 222 passes. The rotatable connection between the locking rod 221 and the support rod 222 allows for flexible relative rotation between them. The guide hole 111 on the base plate 11 provides precise guidance for the movement of the support rod 222, ensuring that it can only move along the direction of the guide hole 111, preventing swaying and deviation. During the locking and unlocking process controlled by the electric bolt lock assembly 21, the support rod 222 can accurately contact or disengage from the ground, ensuring the reliable implementation of the anti-drag function. At the same time, the constraint of the guide hole 111 on the support rod 222 enhances the structural stability of the anti-drag device 2. When the support rod 222 encounters significant resistance against the ground, the guide hole 111 restricts its position, preventing lateral displacement, ensuring the stability of the connection structure between the locking rod 221, the support rod 222, and the vehicle body 1, reducing the risk of damage to the device due to uneven force, and extending its service life.

[0048] To ensure that the support rod 222 remains vertical during the rotation of the locking rod 221, a guide sleeve is also provided on the vehicle body 1. The guide sleeve is spaced apart from the bottom plate 11, and the support rod 222 passes through the guide sleeve, which guides the support rod 222.

[0049] Furthermore, if the diameter of the guide hole 111 is larger than the diameter of the support rod 222, the support rod 222 can be rotatably connected to the locking rod 221. The guide hole 111 provides a certain amount of room for movement, allowing the support rod 222 to swing and move slightly within the guide hole 111 during contact or separation from the ground. This design combines flexibility and guidance, ensuring the support rod 222's ability to fine-tune its position on the ground for better contact, while the constraint of the guide hole 111 prevents excessive swaying and offset of the support rod 222.

[0050] Furthermore, if the diameter of the guide hole 111 is slightly larger than the diameter of the support rod 222, this appropriate gap, combined with the flexible adjustment structure of the second connecting shaft 224 at the first connecting hole, forms an organic whole. When the electric bolt lock assembly 21 locks or unlocks, the second connecting shaft 224 moves within the elongated first connecting hole, reducing the swaying of the support rod 222 within the guide hole 111. The horizontal movement of the second connecting shaft 224 within the elongated hole achieves initial position adjustment of the support rod 222. The guide hole 111 provides guidance for the support rod 222, and combined with the cooperation of the first connecting hole and the second connecting shaft 224, allows the support rod 222 to move precisely in a roughly vertical direction, thereby better contacting the ground, enhancing the pressure resistance, and, combined with the optimization of the movement trajectory by the elongated hole, ensuring the accuracy of locking and unlocking actions.

[0051] Furthermore, the vehicle body 1 is provided with two base plates 11 along the vertical direction, each base plate 11 having a guide hole 111, through which the support rod 222 passes in sequence. This arrangement of double base plates and double guide holes 111 further enhances the constraint and guidance effect on the movement of the support rod 222.

[0052] like Figure 4 As shown, the support rod 222 includes a connecting section 2221 and an abutment section connected together. The connecting section 2221 is connected to the locking rod 221, and the abutment section can press against the ground. The cross-sectional area of ​​the abutment section is greater than or equal to the cross-sectional area of ​​the connecting section 2221. This design enhances the stability under ground pressure, making the support more stable by dispersing pressure and effectively preventing the vehicle body 1 from moving; it also improves the structural strength and reliability. The thinner connecting section 2221 reduces weight and facilitates operation, while the thicker abutment section can withstand greater pressure and reduce the risk of damage.

[0053] Furthermore, the end face of the abutment section away from the connecting section 2221 is covered with a friction layer (not shown in the figure). This friction layer increases the friction between the abutment section and the ground, generating greater resistance to prevent the vehicle body 1 from moving when the abutment section presses against the ground, significantly improving the anti-drag effect. This friction layer is particularly crucial when the ground is relatively smooth, effectively preventing the vehicle body 1 from sliding due to insufficient friction. Moreover, the friction layer also acts as a buffer, reducing wear and impact from direct contact between the abutment section and the ground, protecting both the abutment section and the ground, extending the service life of the abutment section and the entire support rod 222, and also reducing the possibility of damage to the ground.

[0054] Specifically, the friction layer is made of Oxford rubber pads. Oxford pads are wear-resistant and have a moderate coefficient of friction, which increases the friction between the contact section and the ground, effectively preventing the vehicle body 1 from moving. Even on smooth surfaces, they can ensure anti-drag performance. Their toughness and elasticity can buffer contact impacts, reduce wear on the contact section, and reduce ground damage.

[0055] like Figure 1 and Figure 2 As shown, the electric bolt lock assembly 21 also includes a mounting base 212, which is used to connect the electric bolt lock 211 and the vehicle body 1. The mounting base 212 can securely install the electric bolt lock 211, withstand locking and unlocking forces, ensure precise operation, improve the stability and safety of the anti-drag device 2, and also facilitate the installation and removal of the electric bolt lock 211, reducing maintenance costs. Specifically, the mounting base 212 is L-shaped and connected to the vehicle body 1 by bolts. The L-shaped design provides multi-angle support, enhancing structural stability, and the bolt connection makes installation more flexible and reliable, facilitating adjustment and maintenance.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A material transport vehicle, characterized in that, include: Vehicle body (1); A cable is connected to the vehicle body (1), the cable including a plug that can be connected to an external power source; The anti-drag device (2) includes an electric bolt lock assembly (21) and a pull rod assembly (22). The electric bolt lock assembly (21) is connected to the vehicle body (1), and the pull rod assembly (22) is movably connected to the vehicle body (1). The electric bolt lock assembly (21) is electrically connected to the cable. The electric bolt lock assembly (21) is used to lock the pull rod assembly (22) in a state where the pull rod assembly (22) is pressed against the ground.

2. The material transport vehicle according to claim 1, characterized in that, The pull rod assembly (22) includes a locking rod (221), which is movably connected to the vehicle body (1). The locking rod (221) has a locking hole (22111). The electric bolt lock assembly (21) includes an electric bolt lock (211), which includes a bolt (2111). The bolt (2111) can be inserted into the locking hole (22111) to lock the pull rod assembly (22).

3. The material transport vehicle according to claim 2, characterized in that, The pull rod assembly (22) further includes a support rod (222) and a first connecting shaft (223). The locking rod (221) includes a push section (2212) and a locking section (2211) connected to each other. The locking section (2211) is rotatably connected to the vehicle body (1) through the first connecting shaft (223). The support rod (222) is connected to the locking section (2211).

4. The material transport vehicle according to claim 3, characterized in that, The anti-drag device (2) includes two electric bolt lock assemblies (21), the locking rod (221) includes two locking sections (2211), the two ends of the push section (2212) are connected to the two locking sections (2211) one by one, and both locking sections (2211) are provided with locking holes (22111), and the locking holes (22111) correspond one by one with the electric bolt lock assembly (21).

5. The material transport vehicle according to claim 3, characterized in that, The pull rod assembly (22) further includes a second connecting shaft (224). The support rod (222) has a first connecting hole. The second connecting shaft (224) passes through the first connecting hole and can move horizontally relative to the first connecting hole.

6. The material transport vehicle according to claim 5, characterized in that, The first connecting hole is an oblong hole, and the long axis of the oblong hole is set at an angle to the vertical direction.

7. The material transport vehicle according to claim 3, characterized in that, The locking rod (221) is rotatably connected to the support rod (222). The vehicle body (1) includes a bottom plate (11). The bottom plate (11) is provided with a guide hole (111). The support rod (222) passes through the guide hole (111).

8. The material transport vehicle according to claim 3, characterized in that, The support rod (222) includes a connecting section (2221) and an abutting section (2222) connected to each other. The connecting section (2221) is connected to the locking rod (221). The abutting section (2222) can press against the ground. The cross-sectional area of ​​the abutting section (2222) is greater than or equal to the cross-sectional area of ​​the connecting section (2221).

9. The material transport vehicle according to claim 8, characterized in that, The end face of the abutting section (2222) away from the connecting section (2221) is covered with a friction layer.

10. The material transport vehicle according to claim 2, characterized in that, The electric bolt lock assembly (21) also includes a mounting base (212) for connecting the electric bolt lock (211) and the vehicle body (1).

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