Gravity self-locking carrier

Abstract

The utility model relates to a carrier technology field especially relates to a gravity self -locking type carrier, including the bottom plate, the top center fixed mounting of bottom plate has the sleeve column, the inside sliding joint of sleeve column has the lifting column, the top fixed mounting of lifting column has the bracket, sleeve column and lifting column coaxial arrangement are installed in the inside of sleeve column and lifting column and have the height -adjusting subassembly, height -adjusting subassembly is used for adjusting the height of lifting column, the side detachable mounting of bottom plate has a plurality of bearing blocks, the side away from bottom plate of bearing block is equipped with the sliding slot, and bearing block is movably set in the outside of self -locking subassembly through the sliding slot, the self -locking subassembly includes the wheel support and elastic part, and the abutment of elastic part between the top of wheel support and sliding slot, the bottom end of wheel support is installed with the moving wheel, and bearing block can move along the up and down direction of wheel support.

Description

Technical Field

[0001] This utility model relates to the field of transport vehicle technology, and in particular to a gravity self-locking transport vehicle. Background Technology

[0002] In scenarios requiring frequent and rapid handling of supports or equipment bases, the handling method directly impacts labor input and operational efficiency. In daily practice, forklift transport, direct dragging, or the installation of fixed or omnidirectional casters are commonly used to achieve rapid handling—but without using wheeled movement, it is difficult to achieve rapid movement; and when using wheeled movement, effective fixation is often not achieved, or the fixation effect is poor.

[0003] To address these issues, current common practice is to install retractable locking clips on casters or brackets, securing the wheels by locking their rotation. However, this method is only suitable for large components: these components have sufficient center of gravity distance, making them less prone to tipping over or rolling. For components that are heavy but small in size, wheeled movement can easily lead to tipping over due to insufficient center of gravity distance, especially when large objects are placed on top of the component, making the risk even more pronounced. Utility Model Content

[0004] The purpose of this utility model is to propose a gravity self-locking transport vehicle to solve the problems of poor applicability of existing transport vehicles and the high risk of tipping over.

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

[0006] A gravity self-locking transport vehicle includes a base plate, a sleeve column fixedly installed at the top center of the base plate, a lifting column slidably connected inside the sleeve column, a bracket fixedly installed at the top of the lifting column, the sleeve column and the lifting column being coaxially arranged, and a height adjustment component installed inside the sleeve column and the lifting column for adjusting the height of the lifting column.

[0007] Multiple load-bearing blocks are detachably installed on the side of the base plate. A sliding groove is provided on the side of the load-bearing block away from the base plate. The load-bearing block is movably sleeved on the outside of the self-locking assembly through the sliding groove.

[0008] The self-locking assembly includes a wheel frame and an elastic element;

[0009] The elastic element abuts between the top of the wheel frame and the slide groove, and a movable wheel is installed at the bottom of the wheel frame. The load-bearing block can move along the vertical direction of the wheel frame.

[0010] Preferably, the self-locking assembly includes a self-locking screw and an adjusting bolt;

[0011] The load-bearing block is also provided with a sliding hole, which is located above the sliding groove. The sliding groove and the sliding hole are connected to each other, and the groove diameter is larger than the hole diameter.

[0012] One end of the self-locking screw passes through the sliding hole and extends into the sliding groove, and is fixedly connected to the top of the wheel frame. The elastic element is sleeved on the outside of the self-locking screw. The bottom end of the elastic element abuts against the top of the wheel frame, and the top end of the elastic element abuts against the inside of the sliding groove.

[0013] The other end of the self-locking screw is threadedly connected to the adjusting bolt, and the adjusting bolt is exposed outside the load-bearing block;

[0014] The bottom end of the wheel frame is provided with a movable wheel groove, on which the movable wheel is rotatably mounted. The outer contour of the wheel frame is smaller than the groove diameter of the groove.

[0015] Preferably, the height adjustment assembly includes a horizontal bar and a vertical bar;

[0016] The horizontal rod is perpendicular to the sleeve column. The sleeve column has an adjustment hole. One end of the horizontal rod passes through the adjustment hole and extends into the interior of the sleeve column, where a drive gear is fixedly installed. The horizontal rod is rotatably mounted on the adjustment hole.

[0017] The vertical rod is installed inside the lifting column, and the outer surface of the vertical rod is threadedly connected to the inner surface of the lifting column. A driven gear is fixedly installed at the bottom end of the vertical rod, and the driving gear and the driven gear mesh with each other.

[0018] Preferably, the height adjustment component further includes a height adjustment knob, which is fixedly installed on one end of the horizontal bar that is exposed outside the sleeve post.

[0019] Preferably, the device further includes multiple reinforcing frames, one end of which is fixedly installed on the column body of the sleeve column, and the other end of which is fixedly installed on the top of the base plate. The multiple reinforcing frames are inclined to the sleeve column.

[0020] Preferably, it also includes mounting screws and mounting bolts;

[0021] The load-bearing block has a first mounting hole, and the base plate has a second mounting hole;

[0022] One end of the mounting screw passes through the first mounting hole and the second mounting hole in sequence, and is bolted to the mounting bolt.

[0023] Preferably, the base plate includes an equilateral triangular plate and an isosceles trapezoidal plate;

[0024] The longer horizontal side of the isosceles trapezoidal plate is connected to one side of the equilateral triangle plate.

[0025] The number of load-bearing blocks is four, with two load-bearing blocks respectively located on the other two sides of the equilateral triangular plate, and the other two load-bearing blocks spaced apart on the shorter horizontal side of the isosceles trapezoidal plate.

[0026] Preferably, an anti-slip pad is installed at the top of the bracket, and the anti-slip pad is made of rubber.

[0027] One of the above technical solutions has the following beneficial effects:

[0028] 1. Resolving the conflict between mobility and fixation, and improving safety: It retains the flexibility of wheeled mobility to meet the needs of frequent and rapid handling, while automatically triggering self-locking based on the weight of the goods themselves, solving the problem of poor fixation in traditional wheeled pallet trucks. Especially for the "heavy but small components" mentioned in the background technology, the greater the weight of the goods, the more stable the self-locking effect, effectively preventing safety hazards such as tipping over. Even if a large object is placed on the component, its stability can be guaranteed by reliable self-locking.

[0029] 2. Automatic triggering and unlocking improves operational efficiency: Unlike traditional methods, there is no need to manually operate locking devices such as clamps. The device automatically locks after the goods are placed and automatically unlocks after unloading, reducing operation steps and labor input. In scenarios with frequent loading and unloading, it can significantly improve operational efficiency and avoid delays caused by manually operating the fixing devices.

[0030] 3. Wide adaptability and high flexibility: The load-bearing blocks feature a detachable design, allowing for flexible increases or decreases in quantity based on cargo weight. The initial trigger gravity for self-locking can also be adjusted, making it suitable for handling lighter goods as well as meeting the self-locking requirements of heavier items. The height adjustment component allows for bracket height adjustment, accommodating loading and unloading scenarios with supports or equipment bases of varying heights, enhancing the equipment's versatility.

[0031] 4. Stable and reliable structure, extending service life: The sleeve column and lifting column are coaxially arranged to ensure the verticality of gravity transmission and reduce eccentric wear of the structure; the sliding groove provides precise guidance for the movement of the load-bearing block, avoiding misalignment and friction between components and reducing mechanical wear. At the same time, the overall structure is mainly based on mechanical linkage, reducing the use of electronic components, making it more durable in complex industrial environments and reducing maintenance costs. Attached Figure Description

[0032] Figure 1 This is a structural schematic diagram of a gravity self-locking transport vehicle according to this utility model;

[0033] Figure 2 This is a schematic diagram of the installation of the load-bearing block and self-locking component in a gravity self-locking transport vehicle according to this utility model;

[0034] Figure 3 This is an installation diagram of the sleeve column, lifting column and height adjustment component in a gravity self-locking transport vehicle according to this utility model;

[0035] In the attached diagram: base plate 1, equilateral triangle plate 11, isosceles trapezoid plate 12, sleeve column 2, lifting column 3, bracket 4, height adjustment component 5, horizontal bar 51, vertical bar 52, driving gear 53, driven gear 54, height adjustment knob 55, load-bearing block 6, first mounting hole 60, sliding groove 61, sliding hole 62, self-locking component 7, wheel frame 71, elastic element 72, self-locking screw 73, adjusting bolt 74, moving wheel groove 75, moving wheel 8, reinforcing frame 9, anti-slip pad 10, mounting screw 101, mounting bolt 102. Detailed Implementation

[0036] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] A gravity self-locking transport vehicle includes a base plate 1, a sleeve column 2 fixedly installed at the top center of the base plate 1, a lifting column 3 slidably connected inside the sleeve column 2, a bracket 4 fixedly installed at the top of the lifting column 3, the sleeve column 2 and the lifting column 3 being coaxially arranged, and a height adjustment component 5 installed inside the sleeve column 2 and the lifting column 3 for adjusting the height of the lifting column 3;

[0041] Multiple load-bearing blocks 6 are detachably installed on the side of the base plate 1. A sliding groove 61 is provided on the side of the load-bearing block 6 away from the base plate 1. The load-bearing block 6 is movably sleeved on the outside of the self-locking assembly 7 through the sliding groove 61.

[0042] The self-locking assembly 7 includes a wheel frame 71 and an elastic element 72;

[0043] The elastic element 72 abuts between the top of the wheel frame 71 and the sliding groove 61, and a movable wheel 8 is installed at the bottom of the wheel frame 71. The load-bearing block 6 can move along the up and down direction of the wheel frame 71.

[0044] like Figures 1-3 As shown, this gravity-operated self-locking transport vehicle achieves automatic locking and unlocking through the dynamic balance of the weight of the goods and the elastic force of the elastic element 72, combined with the linkage of the mechanical structure. The specific process is as follows:

[0045] 1. Unloaded state, free to move

[0046] When the pallet truck is not loaded with goods, the load-bearing block 6 on the side of the base plate 1 is only subject to its own weight. At this time, the elastic element 72 at the top of the wheel frame 71 in the self-locking assembly 7 is in a naturally extended state. Its upward elastic force is greater than the weight of the load-bearing block 6 and other components, pushing the load-bearing block 6 upward along the wheel frame 71 without exceeding the top of the wheel frame 71. This allows the sliding groove 61 of the load-bearing block 6 to maintain a loose and flexible fit with the wheel frame 71. Since the load-bearing block 6 exerts no additional pressure on the wheel frame 71, the moving wheel 8 at the bottom of the wheel frame 71 is not braked, allowing the pallet truck to move flexibly and meet the basic requirements for rapid transportation.

[0047] 2. Under load, gravity triggers self-locking.

[0048] When goods are placed on the bracket 4, the weight of the goods is transmitted sequentially through the bracket 4 and the lifting column 3 to the base plate 1, and then from the base plate 1 to the detachable load-bearing block 6. The number of load-bearing blocks 6 can be increased or decreased according to the weight of the goods to adjust the initial trigger threshold. At this time, the resultant force of the weight of the goods and the weight of the load-bearing block 6 itself is greater than the elastic force of the elastic element 72, pushing the load-bearing block 6 to move downward along the wheel frame 71 through the slide groove 61. The slide groove 61 provides precise vertical guidance for the load-bearing block 6, preventing it from deviating during movement. As the load-bearing block 6 moves downward, the elastic element 72 is compressed, and the inner wall of the slide groove 61 exerts gradually increasing pressure on the wheel frame 71, gradually transferring all the pressure to the moving wheel 8, making the moving resistance of the moving wheel 8 greater, thereby achieving automatic locking of the moving wheel 8. Moreover, the greater the weight of the goods and the farther the load-bearing block 6 moves downward, the greater the compression of the elastic element 72, the greater the pressure on the wheel frame 71, and the more stable the self-locking effect. In addition, the sleeve column 2 and the lifting column 3 are set coaxially to ensure that the weight of the goods is vertically transmitted to the bottom plate 1, thus ensuring the stability of the self-locking trigger.

[0049] 3. Automatically unlocks when uninstalled.

[0050] After the goods are unloaded, the weight on the bracket 4 disappears, and the downward force on the load-bearing block 6 decreases accordingly. The compressed elastic element 72 gradually extends under its own elastic force, pushing the load-bearing block 6 upward along the wheel frame 71 and returning it to its initial position. At this time, the pressure of the slide 61 on the wheel frame 71 disappears, thereby unlocking the moving wheel 8 and restoring the transport vehicle to a free-moving state. At the same time, the height adjustment component 5 can adjust the height of the lifting column 3 to adapt to different loading and unloading needs, improving the versatility of the equipment.

[0051] To further explain, the self-locking assembly 7 includes a self-locking screw 73 and an adjusting bolt 74;

[0052] The load-bearing block 6 is also provided with a sliding hole 62, which is located above the sliding groove 61. The sliding groove 61 and the sliding hole 62 are connected to each other, and the groove diameter of the sliding groove 61 is larger than the hole diameter of the sliding hole 62.

[0053] One end of the self-locking screw 73 passes through the sliding hole 62 and extends into the sliding groove 61, and is fixedly connected to the top end of the wheel frame 71. The elastic element 72 is sleeved on the outside of the self-locking screw 73. The bottom end of the elastic element 72 abuts against the top end of the wheel frame 71, and the top end of the elastic element 72 abuts against the inside of the sliding groove 61.

[0054] The other end of the self-locking screw 73 is threadedly connected to the adjusting bolt 74, and the adjusting bolt 74 is exposed outside the load-bearing block 6;

[0055] The bottom end of the wheel frame 71 is provided with a movable wheel groove 75, on which the movable wheel 8 is rotatably mounted. The outer contour of the wheel frame 71 is smaller than the groove diameter of the sliding groove 61.

[0056] like Figure 2 As shown, the self-locking screw 73 passes through the sliding hole 62 and is fixed to the wheel frame 71, forming a rigid guide structure of "screw-sliding hole". Compared with the simple guide of the sliding groove 61, it completely avoids the lateral tilt of the load-bearing block 6 when it moves up and down, and ensures the vertical transmission of gravity. It is especially suitable for stable handling of small-volume heavy parts with concentrated center of gravity and easy to shift. The elastic element 72 is sleeved on the outside of the self-locking screw 73 and is limited by the sliding groove 61 and the wheel frame 71. It will not be misaligned or fall off due to long-term compression, thus extending its service life.

[0057] Furthermore, the initial preload of the elastic element 72 can be changed by rotating the adjusting bolt 74: for "heavy but small components" in the background art, the preload can be increased to ensure that it will not unlock with slight touch and will be firmly locked under heavy load to prevent tipping; for lightweight goods, the preload can be reduced to avoid "mis-locking under light load" and solve the problem that traditional fixing clamps cannot flexibly adapt to different weights. The adjustment process does not require disassembly of the components, and the exposed adjusting bolt 74 can be quickly operated on-site, adapting to scenarios where the type of goods is frequently changed.

[0058] To further explain, the height adjustment component 5 includes a horizontal bar 51 and a vertical bar 52;

[0059] The horizontal rod 51 is set perpendicular to the sleeve column 2. The sleeve column 2 has an adjustment hole 21 on its column body. One end of the horizontal rod 51 passes through the adjustment hole 21 and extends into the interior of the sleeve column 2 and is fixedly installed with a drive gear 53. The rod body of the horizontal rod 51 is rotatably installed in the adjustment hole 21.

[0060] The vertical rod 52 is installed inside the lifting column 3, and the outer rod surface of the vertical rod 52 is threadedly connected to the inner cylindrical surface of the lifting column 3. A driven gear 54 is fixedly installed at the bottom end of the vertical rod 52, and the driving gear 53 and the driven gear 54 mesh with each other.

[0061] like Figure 3 As shown, the operator rotates the horizontal bar 51, which rotates on the sleeve 2 via the height adjustment hole 21, causing the drive gear 53 fixed at its end to rotate synchronously. The drive gear 53 meshes with the driven gear 54, converting the horizontal rotational motion into the vertical plane rotation of the driven gear 54. The driven gear 54 is fixed to the bottom end of the vertical bar 52, causing the vertical bar to rotate synchronously. Since the vertical bar 52 is threadedly connected to the inner wall of the lifting column 3, and the lifting column 3 is constrained by the sleeve 2 and cannot rotate but can only slide axially, the rotational motion of the vertical bar 52 is converted into the linear lifting motion of the lifting column 3 through the threaded pair.

[0062] The height adjustment component 5 is designed to achieve efficient and precise height adjustment through a purely mechanical means. This not only solves the problem of fixed height in traditional handling vehicles, but also avoids the reliability risks of complex electronic systems, making it particularly suitable for industrial scenarios with high requirements for safety and durability.

[0063] To further explain, the height adjustment component 5 also includes a height adjustment knob 55, which is fixedly installed on one end of the horizontal rod 51 that is exposed on the sleeve post 2.

[0064] like Figure 3 As shown, rotating the height adjustment knob 55 can drive the horizontal bar 51 to rotate, converting the horizontal rotational force into a vertical adjustment force, making it convenient for the operator to adjust the height of the bracket 4.

[0065] Further explanation includes multiple reinforcing frames 9, one end of which is fixedly installed on the column body of the sleeve column 2, and the other end of which is fixedly installed on the top of the base plate 1. The multiple reinforcing frames 9 are inclined to the sleeve column 2.

[0066] like Figure 1 As shown, multiple reinforcing frames 9 form a stable triangular support structure. When the bracket 4 supports goods, the weight of the goods is transferred to the sleeve column 2 through the lifting column 3. The sleeve column 2 will be subjected to downward pressure and lateral force due to possible shift of the center of gravity of the goods. At this time, the reinforcing frame 9 uses its own inclined structure to effectively distribute the force on the sleeve column 2 onto the base plate 1, preventing the sleeve column 2 from bearing the entire load by relying on a single point connection with the base plate 1. This prevents the sleeve column 2 from bending, deforming, or even breaking under heavy pressure or lateral force, thus improving the overall reliability and durability of the equipment.

[0067] Further explanation includes mounting screw 101 and mounting bolt 102;

[0068] The load-bearing block 6 has a first mounting hole 60, and the base plate 1 has a second mounting hole;

[0069] One end of the mounting screw 101 passes through the first mounting hole 60 and the second mounting hole in sequence, and is bolted to the mounting bolt 102.

[0070] like Figures 1-2 As shown, the connection between the load-bearing block 6 and the base plate 1 is both firm and detachable through the cooperation of the mounting screw 101 and mounting bolt 102. Compared with the traditional fixed connection load-bearing structure, it is more convenient to flexibly increase or decrease the number of load-bearing blocks 6 or change their installation position according to the weight, size and center of gravity distribution of the goods, further optimize the load-bearing balance of the equipment and enhance its adaptability to different goods handling scenarios.

[0071] To further explain, the base plate 1 includes an equilateral triangular plate 11 and an isosceles trapezoidal plate 12;

[0072] The longer horizontal side of the isosceles trapezoidal plate 12 is connected to one side of the equilateral triangle plate 11.

[0073] The number of load-bearing blocks 6 is four, with two load-bearing blocks 6 respectively located on the other two sides of the equilateral triangular plate 11, and the other two load-bearing blocks 6 spaced apart on the shorter horizontal side of the isosceles trapezoidal plate 12.

[0074] like Figure 1 As shown, since the equilateral triangular plate 11 itself has good stability, when it is combined with the isosceles trapezoidal plate 12 and the four load-bearing blocks 6 are reasonably distributed, the overall stability of the equipment when carrying goods can be greatly improved, effectively resisting the overturning force caused by uneven weight of goods, and solving the problem that traditional handling vehicles are prone to tilting and tipping over due to unreasonable load distribution.

[0075] To further explain, an anti-slip pad 10 is installed at the top of the bracket 4, and the anti-slip pad 10 is made of rubber.

[0076] like Figure 1 As shown, an anti-slip pad 10 is installed at the top of the bracket 4 to increase friction with the goods and prevent the goods from sliding and falling during handling.

[0077] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A gravity-operated self-locking transport vehicle, characterized in that, Includes a base plate (1), a sleeve column (2) is fixedly installed at the top center of the base plate (1), a lifting column (3) is slidably connected inside the sleeve column (2), a bracket (4) is fixedly installed at the top of the lifting column (3), the sleeve column (2) and the lifting column (3) are coaxially arranged, and a height adjustment component (5) is installed inside the sleeve column (2) and the lifting column (3), the height adjustment component (5) is used to adjust the height of the lifting column (3); Multiple load-bearing blocks (6) are detachably installed on the side of the base plate (1). A sliding groove (61) is provided on the side of the load-bearing block (6) away from the base plate (1). The load-bearing block (6) is movably sleeved on the outside of the self-locking assembly (7) through the sliding groove (61). The self-locking assembly (7) includes a wheel frame (71) and an elastic element (72); The elastic element (72) abuts between the top of the wheel frame (71) and the slide groove (61), and a movable wheel (8) is installed at the bottom of the wheel frame (71). The load-bearing block (6) can move along the up and down direction of the wheel frame (71).

2. The gravity self-locking transport vehicle according to claim 1, characterized in that, The self-locking assembly (7) includes a self-locking screw (73) and an adjusting bolt (74); The load-bearing block (6) is also provided with a sliding hole (62), which is located above the sliding groove (61). The sliding groove (61) and the sliding hole (62) are connected to each other. The groove diameter of the sliding groove (61) is larger than the hole diameter of the sliding hole (62). One end of the self-locking screw (73) passes through the sliding hole (62) and extends into the sliding groove (61) and is fixedly connected to the top of the wheel frame (71). The elastic element (72) is sleeved on the outside of the self-locking screw (73). The bottom end of the elastic element (72) abuts against the top of the wheel frame (71), and the top end of the elastic element (72) abuts against the inside of the sliding groove (61). The other end of the self-locking screw (73) is threadedly connected to the adjusting bolt (74), which is exposed outside the load-bearing block (6); The bottom end of the wheel frame (71) is provided with a movable wheel groove (75), and the movable wheel (8) is rotatably mounted in the movable wheel groove (75). The outer contour of the wheel frame (71) is smaller than the groove diameter of the slide (61).

3. The gravity self-locking transport vehicle according to claim 1, characterized in that, The height adjustment component (5) includes a horizontal bar (51) and a vertical bar (52); The horizontal rod (51) is set perpendicular to the sleeve column (2). The sleeve column (2) has an adjustment hole (21) on its column body. One end of the horizontal rod (51) passes through the adjustment hole (21) and extends into the interior of the sleeve column (2) and is fixedly installed with a drive gear (53). The rod body of the horizontal rod (51) is rotatably installed in the adjustment hole (21). The vertical rod (52) is installed inside the lifting column (3), and the outer rod surface of the vertical rod (52) is threadedly connected to the inner cylindrical surface of the lifting column (3). A driven gear (54) is fixedly installed at the bottom end of the vertical rod (52), and the driving gear (53) and the driven gear (54) mesh with each other.

4. A gravity-operated self-locking transport vehicle according to claim 3, characterized in that, The height adjustment component (5) also includes a height adjustment knob (55), which is fixedly installed on one end of the horizontal bar (51) exposed on the sleeve (2).

5. A gravity-operated self-locking transport vehicle according to claim 1, characterized in that, It also includes multiple reinforcing frames (9), one end of which is fixedly installed on the column body of the sleeve column (2), and the other end of which is fixedly installed on the top of the base plate (1). The multiple reinforcing frames (9) are inclined to the sleeve column (2).

6. A gravity-operated self-locking transport vehicle according to claim 1, characterized in that, It also includes mounting screws (101) and mounting bolts (102); The load-bearing block (6) has a first mounting hole (60), and the base plate (1) has a second mounting hole; One end of the mounting screw (101) passes through the first mounting hole (60) and the second mounting hole in sequence, and is bolted to the mounting bolt (102).

7. A gravity-operated self-locking transport vehicle according to claim 1, characterized in that, The base plate (1) includes an equilateral triangular plate (11) and an isosceles trapezoidal plate (12); The longer horizontal side of the isosceles trapezoidal plate (12) is connected to one side of the equilateral triangular plate (11); The number of the load-bearing blocks (6) is four, with two load-bearing blocks (6) respectively located on the other two sides of the equilateral triangular plate (11), and the other two load-bearing blocks (6) spaced apart on the shorter horizontal side of the isosceles trapezoidal plate (12).

8. A gravity-operated self-locking transport vehicle according to claim 1, characterized in that, The top of the bracket (4) is equipped with an anti-slip pad (10), which is made of rubber.

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