Unpowered mechanical trolley

Abstract

The invention relates to the technical field of mechanical trolleys, in particular to an unpowered mechanical trolley which comprises a supporting frame, a supporting frame is arranged above the supporting frame, a square plate is fixed in the supporting frame, rollers are rotatably arranged on the surface of the square plate, a top column is fixedly connected to the bottom of the square plate, the bottom of the top column is fixedly connected to a connecting plate, and the connecting plate is arranged on a lifting table. A spline shaft is fixed to the center of the bottom of the lifting table, lower supports are arranged at the bottoms of the two sides of the connecting plate, a supporting seat is arranged on the surface of the carrying plate, the interior of the supporting seat is hollow, a spline sleeve is rotationally arranged above the supporting seat, the spline shaft is matched with the spline sleeve, and a driven bevel gear is fixed to the outer side of the top of the spline sleeve. The trolley has the beneficial effects that the trolley does not need to be driven by an external energy source, and goods are conveyed by skillfully utilizing the gravity of the goods and the elastic force of the spring, so that the energy consumption is effectively reduced, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of mechanical trolleys, in particular to a non-powered mechanical trolley. Background Art

[0002] In the existing transportation system, most transport vehicles rely on electricity for direct or indirect driving, or rely entirely on manpower to transport goods. For electric-driven transport vehicles, when the weight of the transported objects increases, the energy consumption required also increases significantly, which not only increases operating costs, but also creates a certain burden on the environment.

[0003] On the other hand, in short-distance transportation scenarios, the use of traditional transport vehicles often has the problem of energy waste. For example, in order to cope with frequent start-stop needs, some transport vehicles have to continuously turn on or frequently shut down the power system, which not only reduces energy utilization efficiency, but also shortens the service life of the equipment.

[0004] Therefore, the present invention proposes a non-powered mechanical trolley to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a non-powered mechanical trolley to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an unpowered mechanical trolley, the unpowered mechanical trolley comprising: a support frame, a support frame is arranged above the support frame, a square plate is fixed inside the support frame, rollers are rotatably arranged on the surface of the square plate, a top column is fixedly connected to the bottom of the square plate, the bottom of the top column is fixedly connected to a connecting plate, the connecting plate is arranged on a lifting platform, a spline shaft is fixed at the bottom center of the lifting platform, and lower brackets are arranged at the bottom of both sides of the connecting plate;

[0007] A carrier plate, a support seat is arranged on the surface of the carrier plate, the interior of the support seat is hollow, a spline sleeve is rotatably arranged above the support seat, the spline shaft and the spline sleeve are adapted, and a driven bevel gear is fixed on the top outer side of the spline sleeve;

[0008] A base plate, two groups of support plates are fixed on the top of the base plate by bolts, a transmission shaft is rotatably arranged on the two groups of support plates, a driving bevel gear is fixed at the end face of the transmission shaft, the driving bevel gear and the driven bevel gear are meshed and connected, a driving sprocket is fixed on the transmission shaft, and the driving sprocket is located between the two groups of support plates.

[0009] Preferably, the square plates are provided in two groups, the two groups of square plates are symmetrically distributed about the central axis of the support frame, a plurality of rollers are provided, the plurality of rollers are linearly distributed equidistantly on the surface of the square plates, and retaining frames are fixed on both sides above the support frame.

[0010] Preferably, the top columns are provided with four groups, and the four groups of top columns are distributed in a "mouth" shape on the lower surfaces of the two groups of square plates. The lifting platform is in the shape of a square plate, and two groups of connecting plates are provided, and the two groups of connecting plates are symmetrically distributed about the central axis of the lifting platform surface. The cross-section of the lower bracket is "L"-shaped, and the short side of the lower bracket faces the outside of the lifting platform.

[0011] Preferably, two groups of first inner plates, two groups of second inner plates and two groups of third inner plates are fixed on the support frame, the first inner plates are located higher than the second inner plates, the second inner plates are higher than the third inner plates, and an upper bracket is provided on the surface of the first inner plate facing the inner side of the support frame, and two groups of upper brackets are provided, and the two groups of upper brackets are symmetrically distributed about the central axis of the inner plate surface.

[0012] Preferably, a spring is provided inside the support frame, one end of the spring is fixedly connected to an upper connector, the other end of the spring is fixedly connected to a lower connector, the lower connector is rotatably connected to the lower bracket, the upper connector is rotatably connected to the upper bracket, and the spring connects the lifting platform and the first inner plate.

[0013] Preferably, columns are fixed on the surface of the second inner plate, and two groups of columns are provided. The two groups of columns are symmetrically distributed about the central axis of the surface of the second inner plate, and the top end faces of the columns are chamfered. Side panels are fixed on both sides of the columns, and mounting holes are provided on the surfaces of the side panels and the columns.

[0014] Preferably, the carrier plate is designed on a connecting rod, and two groups of connecting rods are provided. The two groups of connecting rods are located on both sides of the bottom of the carrier plate. The carrier plate is connected to the connecting rod by countersunk internal five-point bolts. Through holes are provided on the surfaces of both ends of the connecting rod. The outer wall of the column and the inner wall of the through hole are slidably connected. Mounting holes are provided on the sides of both ends of the connecting rod. The mounting holes penetrate the through holes. The connecting rod is located on the inner sides of the two groups of side plates, and stud bolts are provided in the mounting holes.

[0015] Preferably, the support seat is fixed to the carrier plate by countersunk pentagonal bolts, the support seat is located directly below the lifting platform, the base plate is in the shape of a square plate, support columns are fixed at the four ends of the lower surface of the base plate, and the bottom of the support column is fixedly connected to the carrier plate.

[0016] Preferably, a diagonal support plate is provided between the third inner plate and the support frame, one end of the diagonal support plate is fixedly connected to the third inner plate by bolts, and the other end of the diagonal support plate is fixedly connected to the support frame by bolts, and the cross-section of the gap between the support frame, the third inner plate and the diagonal support plate is a right triangle.

[0017] Preferably, a base is fixed at the four ends of the bottom of the support frame, a rotating shaft is connected to the base through a bearing, two sets of moving wheels are fixed on the rotating shaft, the moving wheels are located next to the base, a driven sprocket is fixed on one side of the rotating shaft, the driven sprocket and the driving sprocket are connected by a chain, a through groove and an outer groove are opened on the surface of the carrier plate, the chain passes through the through groove and the outer groove, and the chain penetrates the base plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention proposes an unpowered mechanical trolley that does not require external energy to drive, thus reducing energy consumption and environmental pollution, and conforming to the green and low-carbon development concept. Through clever design, the present invention simplifies the structure of the mechanical trolley, reduces production costs and maintenance difficulties, and cleverly utilizes the gravity of the goods and the elastic force of the spring to achieve stable operation of the trolley, thereby realizing the transportation of goods and improving its reliability and durability. The trolley has a compact structure, is easy to operate, and is easy for users to get started and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a side view of the overall structure of the present invention;

[0022] Figure 3 It is the front view of the overall structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the second inner plate of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the lower extension rod of the present invention;

[0025] Figure 6 It is a schematic diagram of the connecting rod structure of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the connecting plate of the present invention;

[0027] Figure 8 It is a schematic diagram of the substrate structure of the present invention;

[0028] Fig. 9 It is a schematic diagram of the carrier structure of the present invention.

[0029] In the figure: 1, stop frame; 2, roller; 3, square plate; 4, guide rod; 5, first inner plate; 6, diagonal support plate; 7, third inner plate; 8, lower extension rod; 9, ball bearing; 10, rolling groove; 11, strip plate; 12, moving wheel; 13, base; 14, second inner plate; 15, spring; 16, support frame; 17, support frame; 18, connecting plate; 19, spline shaft; 20, lifting platform; 21, top column; 22, lower bracket; 23, chain; 24, main Moving bevel gear; 25, rotating shaft; 26, driven bevel gear; 27, column; 29, side plate; 30, upper bracket; 31, bottom plate; 32, driven sprocket; 34, driving sprocket; 35, spline sleeve; 36, carrier plate; 37, through hole; 38, connecting rod; 39, through groove; 40, outer groove; 41, base plate; 42, support column; 43, support plate; 44, transmission shaft; 45, guide hole; 46, upper connecting piece; 47, lower connecting piece; 48, support seat. DETAILED DESCRIPTION

[0030] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0031] Example 1: Please refer to Figures 1 to 9 The present invention provides a technical solution: a non-powered mechanical trolley, comprising: a support frame 16, a support frame 17 is arranged above the support frame 16, a square plate 3 is fixed inside the support frame 17, a roller 2 is rotatably arranged on the surface of the square plate 3, a top column 21 is fixedly connected to the bottom of the square plate 3, the bottom of the top column 21 is fixedly connected to the connecting plate 18, the connecting plate 18 is arranged on the lifting platform 20, a spline shaft 19 is fixed at the bottom center of the lifting platform 20, and lower brackets 22 are arranged at the bottom of both sides of the connecting plate 18;

[0032] A carrier plate 36, a support seat 48 is arranged on the surface of the carrier plate 36, the support seat 48 is hollow inside, a spline sleeve 35 is rotatably arranged above the support seat 48, the spline shaft 19 and the spline sleeve 35 are adapted, and a driven bevel gear 26 is fixed to the outer side of the top of the spline sleeve 35;

[0033] Base plate 41, two groups of support plates 43 are fixed on the top of the base plate 41 by bolts, and transmission shafts 44 are rotatably arranged on the two groups of support plates 43, and a driving bevel gear 24 is fixed on the end surface of the transmission shaft 44, and the driving bevel gear 24 is meshed and connected with the driven bevel gear 26, and a driving sprocket 34 is fixed on the transmission shaft 44, and the driving sprocket 34 is located between the two groups of support plates 43;

[0034] When in use, the device does not require external energy drive, which reduces energy consumption and environmental pollution, and is in line with the green and low-carbon development concept. Through clever design, the present invention simplifies the structure of the mechanical trolley, reduces the production cost and maintenance difficulty, and cleverly uses the gravity of the goods and the elastic force of the spring 15 to achieve the stable operation of the trolley, thereby realizing the transportation of goods and improving its reliability and durability. The trolley has a compact structure, is easy to operate, and is easy for users to get started and use.

[0035] Embodiment 2: Based on Embodiment 1, two groups of square plates 3 are provided, and the two groups of square plates 3 are symmetrically distributed about the central axis of the support frame 17, a plurality of rollers 2 are provided, and the plurality of rollers 2 are linearly distributed equidistantly on the surface of the square plates 3, and retaining frames 1 are fixed on both sides above the support frame 17;

[0036] When in use, the support frame 17 and the square plate 3 can receive the goods to be transported, and the plurality of rollers 2 are arranged to facilitate pushing the goods, thereby realizing the movement and transfer of the goods. The two sets of baffles 1 can protect the goods placed on the support frame 17 and the square plate 3 to prevent the goods from tipping over;

[0037] There are four groups of top columns 21, which are distributed in a "mouth" shape on the lower surfaces of the two groups of square plates 3. The lifting platform 20 is in a square plate shape. There are two groups of connecting plates 18, which are symmetrically distributed about the central axis of the surface of the lifting platform 20. The cross section of the lower bracket 22 is "L" shaped, and the short side of the lower bracket 22 faces the outside of the lifting platform 20.

[0038] A spring 15 is provided inside the support frame 16, one end of the spring 15 is fixedly connected to an upper connector 46, the other end of the spring 15 is fixedly connected to a lower connector 47, the lower connector 47 is rotatably connected to the lower bracket 22, the upper connector 46 is rotatably connected to the upper bracket 30, and the spring 15 connects the lifting platform 20 and the first inner plate 5;

[0039] When in use, the four groups of top columns 21 are evenly distributed, so that the support frame 17 can be lifted and lowered more smoothly. At the same time, when the support frame 17 is lifted and lowered, the four groups of springs 15 will be deformed by force and store elastic potential energy, which is convenient for the subsequent recovery of the lifting platform 20. The lower connecting piece 47 is rotatably connected to the lower bracket 22, and the upper connecting piece 46 is rotatably connected to the upper bracket 30. Therefore, the elastic force of the spring 15 can be released and stored more stably when the lifting platform 20 is lifted and lowered.

[0040] Embodiment 3: On the basis of Embodiment 2, a column 27 is fixed on the surface of the second inner plate 14, and two groups of columns 27 are provided. The two groups of columns 27 are symmetrically distributed about the central axis of the surface of the second inner plate 14, and the top end surfaces of the columns 27 are chamfered. Side panels 29 are fixed on both sides of the columns 27, and mounting holes are provided on the surfaces of the side panels 29 and the columns 27;

[0041] The carrier plate 36 is designed on the connecting rod 38. The connecting rod 38 is provided with two groups. The two groups of connecting rods 38 are located on both sides of the bottom of the carrier plate 36. The carrier plate 36 is connected to the connecting rod 38 by countersunk internal pentagonal bolts. Through holes 37 are opened on the surfaces of both ends of the connecting rod 38. The outer wall of the column 27 and the inner wall of the through hole 37 are slidably connected. Mounting holes are opened on the side surfaces of both ends of the connecting rod 38. The mounting holes penetrate the through hole 37. The connecting rod 38 is located on the inner sides of the two groups of side plates 29. Stud bolts are provided in the mounting holes.

[0042] When in use, the through hole 37 on the connecting rod 38 is matched with the column 27 to achieve the first limit of the connecting rod 38, ensuring that the connecting rod 38 can be stably connected to the second inner plate 14. At the same time, the connecting rod 38 will be located between the two sets of side plates 29. By tightening the stud bolts in the mounting holes of the side plates 29, the mounting holes of the column 27 and the mounting holes of the pole, the pole can be limited and fixed, thereby improving the stability of the pole and ensuring the stability of the carrier plate 36.

[0043] The support seat 48 is fixed to the carrier plate 36 by countersunk pentagonal bolts. The support seat 48 is located directly below the lifting platform 20. The base plate 41 is in the shape of a square plate. The four ends of the lower surface of the base plate 41 are fixed with support columns 42. The bottom of the support column 42 is fixedly connected to the carrier plate 36.

[0044] A diagonal brace plate 6 is provided between the third inner plate 7 and the support frame 16, one end of the diagonal brace plate 6 is fixedly connected to the third inner plate 7 by bolts, and the other end of the diagonal brace plate 6 is fixedly connected to the support frame 16 by bolts, and the cross section of the gap between the support frame 16, the third inner plate 7 and the diagonal brace plate 6 is a right triangle;

[0045] When in use, it is fixed by countersunk internal pentagon bolts, which can take up less space when connected, making the structure more compact, which is particularly important for a small car with limited space, and can ensure the stability and reliability of the connection. At the same time, the countersunk internal pentagon bolts are made of high-strength materials and can withstand large loads and torques, which makes them perform well when subjected to vibrations, ensuring the firmness and durability of the connection. The diagonal brace plate 6 provides stable support for the connection between the support frame 16 and the third inner plate 7, thereby improving the overall stability of the vehicle body;

[0046] The four ends of the bottom of the support frame 16 are fixed with a base 13, and a rotating shaft 25 is connected to the base 13 through a bearing. Two sets of moving wheels 12 are fixed to the rotating shaft 25, and the moving wheels 12 are located beside the base 13. A driven sprocket 32 ​​is fixed to one side of the rotating shaft 25, and the driven sprocket 32 ​​and the driving sprocket 34 are connected through a chain 23. A through groove 39 and an outer groove 40 are opened on the surface of the carrier plate 36, and the chain 23 passes through the through groove 39 and the outer groove 40, and the chain 23 penetrates the base plate 41;

[0047] When in use, the active bevel gear 24 on the transmission shaft 44 is meshed and connected with the driven bevel gear 26, thereby achieving stable power transmission and avoiding interruption of power transmission. This design simplifies the power transmission system and improves the operating efficiency of the trolley. The through groove 39 and the outer groove 40 are provided to achieve stable rotation of the chain 23 and ensure stable and continuous power transmission.

[0048] Embodiment 4: On the basis of embodiment 3, guide holes 45 are provided at the four ends of the upper surface of the support frame 16, guide rods 4 are fixed at the four ends of the lower surface of the support frame 17, the outer wall of the guide rod 4 and the inner wall of the guide hole 45 are slidably connected, a bottom plate 31 is fixed by bolts at the center axis of the lower surface of the third inner plate 7, a lower extension rod 8 is connected to the bottom plate 31, the angle between the lower extension rod 8 and the ground is 45 degrees, a ball 9 is provided at the end of the lower extension rod 8, a strip plate 11 is fixed below the support frame 16, a rolling groove 10 is provided on the surface of the strip plate 11, and the ball 9 is located in the rolling groove 10 and is arranged to roll;

[0049] When in use, while the support frame 17 is being raised and lowered, the guide rod 4 will continue to slide in the guide hole 45, providing guidance and support for the movement of the support frame 17, thereby improving the stability of the support frame 17. At the same time, in order to ensure that the vehicle body can perform the specified linear motion, a bottom plate 31, a lower extension rod 8, a ball 9 and a strip board 11 are provided. When the vehicle body moves, the movable ball 9 will continue to roll in the groove of the ball 9. By setting the strip board 11 in a straight line, the straight and stable transportation of the vehicle body is ensured.

[0050] Working principle: In actual use, when the goods are placed in the support frame 17 at the cargo sending point, the gravity of the goods will be applied to the support frame 17, and the gravity will be applied to the spline shaft 19, and then based on a downward thrust of the spline shaft 19, since the spline shaft 19 and the spline sleeve 35 are adapted, when the spline shaft 19 is forced to move downward, the spline sleeve 35 will rotate, and the driven bevel gear 26 will rotate, thereby driving the active bevel gear 24 to rotate, and then driving the active sprocket 34 to rotate. Under the transmission action of the chain 23, the driven sprocket 32 ​​will be driven to rotate, and then the rotating shaft 25 and the moving wheel 12 will be driven to rotate, so as to realize the movement of the vehicle body. In this process, the set lifting seat will continue to move downward, thereby driving the connecting plate 18 to move downward, and then pulling the spring 15 , the spring 15 will continue to store elastic potential energy. When the support frame 17 continues to descend until it contacts the support frame 16, the vehicle body will stop moving. Then the operator will take the goods off. Due to the removal of the goods, the support frame 17 will no longer be subjected to downward thrust, and the elastic potential energy of the spring 15 will continue to be released, thereby driving the connecting plate 18 and the lifting seat to move upward, thereby driving the spline shaft 19 to move upward, and similarly driving the spline sleeve 35 and the driven bevel gear 26 to rotate, thereby driving the driving bevel gear 24 to rotate, so that the driving sprocket 34 rotates in the opposite direction, and then under the transmission action of the chain 23, the driven sprocket 32, the rotating shaft 25 and the moving wheel 12 are driven to rotate in the opposite direction, thereby realizing the movement of the vehicle body in the direction of travel, and finally realizing the vehicle body returning to the starting point, and then reloading operation is carried out.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An unpowered mechanical trolley, characterized in that: The unpowered mechanical trolley comprises: a support frame (16), a support frame (17) is arranged above the support frame (16), a square plate (3) is fixed inside the support frame (17), a roller (2) is rotatably arranged on the surface of the square plate (3), a top column (21) is fixedly connected to the bottom of the square plate (3), the bottom of the top column (21) is fixedly connected to a connecting plate (18), the connecting plate (18) is arranged on a lifting platform (20), a spline shaft (19) is fixed at the center position of the bottom of the lifting platform (20), and lower brackets (22) are arranged at the bottom of both sides of the connecting plate (18); A carrier plate (36), a support seat (48) is arranged on the surface of the carrier plate (36), the support seat (48) is hollow inside, a spline sleeve (35) is rotatably arranged above the support seat (48), the spline shaft (19) and the spline sleeve (35) are matched, and a driven bevel gear (26) is fixed on the outer side of the top of the spline sleeve (35); A base plate (41) is provided, and two groups of support plates (43) are fixed on the upper side of the base plate (41) by bolts. A transmission shaft (44) is rotatably arranged on the two groups of support plates (43). A driving bevel gear (24) is fixed on the end surface of the transmission shaft (44). The driving bevel gear (24) and the driven bevel gear (26) are meshed and connected. A driving sprocket (34) is fixed on the transmission shaft (44), and the driving sprocket (34) is located between the two groups of support plates (43).

2. The unpowered mechanical vehicle according to claim 1, characterized in that: The square plates (3) are provided in two groups, and the two groups of square plates (3) are symmetrically distributed about the central axis of the support frame (17). A plurality of rollers (2) are provided, and the plurality of rollers (2) are linearly distributed at equal intervals on the surface of the square plates (3). Stop frames (1) are fixed on both sides above the support frame (17).

3. The unpowered mechanical vehicle according to claim 1, characterized in that: The top columns (21) are provided in four groups, and the four groups of top columns (21) are distributed in a "mouth" shape on the lower surfaces of the two groups of square plates (3). The lifting platform (20) is in a square plate shape. The connecting plates (18) are provided in two groups, and the two groups of connecting plates (18) are symmetrically distributed about the central axis of the surface of the lifting platform (20). The cross section of the lower bracket (22) is "L"-shaped, and the short side of the lower bracket (22) faces the outside of the lifting platform (20).

4. The unpowered mechanical vehicle according to claim 1, characterized in that: Two groups of first inner plates (5), two groups of second inner plates (14) and two groups of third inner plates (7) are fixed on the support frame (16); the first inner plates (5) are located higher than the second inner plates (14); the second inner plates (14) are higher than the third inner plates (7); an upper bracket (30) is arranged on a surface of the first inner plate (5) facing the inner side of the support frame (16); two groups of the upper brackets (30) are arranged; and the two groups of the upper brackets (30) are symmetrically distributed about the central axis of the inner plate surface.

5. The unpowered mechanical vehicle according to claim 1, characterized in that: A spring (15) is arranged inside the support frame (16), one end of the spring (15) is fixedly connected to an upper connecting piece (46), the other end of the spring (15) is fixedly connected to a lower connecting piece (47), the lower connecting piece (47) is rotatably connected to the lower bracket (22), the upper connecting piece (46) is rotatably connected to the upper bracket (30), and the spring (15) connects the lifting platform (20) and the first inner plate (5).

6. The unpowered mechanical vehicle according to claim 4, characterized in that: A column (27) is fixed on the surface of the second inner plate (14), and two groups of columns (27) are provided. The two groups of columns (27) are symmetrically distributed about the central axis of the surface of the second inner plate (14), and the top end surface of the column (27) is chamfered. Side panels (29) are fixed on both sides of the column (27), and mounting holes are opened on the surfaces of the side panels (29) and the column (27).

7. The unpowered mechanical vehicle according to claim 1, characterized in that: The carrier plate (36) is designed on the connecting rod (38), and the connecting rod (38) is provided with two groups. The two groups of connecting rods (38) are located at both sides of the bottom of the carrier plate (36). The carrier plate (36) is connected to the connecting rod (38) by countersunk internal pentagonal bolts. Through holes (37) are opened on the surfaces of both ends of the connecting rod (38). The outer wall of the column (27) and the inner wall of the through hole (37) are slidably connected. Mounting holes are opened on the side surfaces of both ends of the connecting rod (38), and the mounting holes penetrate the through hole (37). The connecting rod (38) is located on the inner sides of the two groups of side plates (29), and stud bolts are arranged in the mounting holes.

8. The unpowered mechanical vehicle according to claim 1, characterized in that: The support seat (48) is fixed on the carrier plate (36) by means of countersunk internal five-point bolts. The support seat (48) is located directly below the lifting platform (20). The base plate (41) is in the shape of a square plate. Support columns (42) are fixed at the four ends of the lower surface of the base plate (41). The bottom of the support column (42) is fixedly connected to the carrier plate (36).

9. The unpowered mechanical vehicle according to claim 4, characterized in that: A diagonal support plate (6) is provided between the third inner plate (7) and the support frame (16); one end of the diagonal support plate (6) is fixedly connected to the third inner plate (7) by bolts; the other end of the diagonal support plate (6) is fixedly connected to the support frame (16) by bolts; and the cross section of the gap between the support frame (16), the third inner plate (7) and the diagonal support plate (6) is a right triangle.

10. The unpowered mechanical vehicle according to claim 1, characterized in that: The support frame (16) is fixed with a base (13) at the four ends of the bottom, the base (13) is connected with a rotating shaft (25) through a bearing, two groups of moving wheels (12) are fixed on the rotating shaft (25), the moving wheels (12) are located beside the base (13), a driven sprocket (32) is fixed on one side of the rotating shaft (25), the driven sprocket (32) and the driving sprocket (34) are connected through a chain (23), a through groove (39) and an outer groove (40) are opened on the surface of the carrier plate (36), the chain (23) passes through the through groove (39) and the outer groove (40), and the chain (23) penetrates the base plate (41).

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