Plate trailer capable of being automatically adjusted

Abstract

The utility model relates to the technical field of cargo transport vehicles, in particular to a plate trailer capable of being automatically adjusted. Comprising a vehicle body, a top plate, a bull-eye bearing, a heavy hammer, a pull rod, a support and a spring, the top plate is arranged on the vehicle body, the bull-eye bearing comprises a ball, a base and a cover plate, the base is installed in the center of the top face of the vehicle body, a spherical groove is formed in the top face of the base, the ball is installed in the spherical groove of the base, and the cover plate is annular and installed on the top face of the base; the lower end of the pull rod is connected with the center of the top face of the heavy hammer, and the upper end of the pull rod penetrates through the center of the bottom face of the base to be connected with the ball. The bracket is cross-shaped, is mounted on the pull rod and is perpendicular to the pull rod, and the pull rod is positioned in the center of the bracket; the four tail ends of the support are each provided with a vertical spring, and the upper portions of the springs make contact with the bottom face of the top plate. The top plate of the plate trailer can be kept horizontal all the time, and the problem that goods slide down is thoroughly solved.

Description

Technical Field

[0001] The utility model relates to the technical field of goods transportation vehicles, in particular to a flatbed truck with automatic adjustment function. Background Art

[0002] When transferring goods, flatbed trucks are usually used. When a traditional flatbed truck passes through a slope, the top surface of the flatbed truck will tilt, and the goods are at risk of slipping.

[0003] In the prior art, the invention patent with the authorization announcement number CN 113120053 B discloses a logistics flatbed truck for slopes, including a vehicle body and an adjustment mechanism, and the adjustment mechanism is arranged inside the vehicle body; the vehicle body includes a vehicle board, a bearing board and a handle bracket, the bearing board is movably arranged on the top of the vehicle board, and the handle bracket is movably arranged on the top of the vehicle board. For this logistics flatbed truck for slopes, the support frame is fixed on the top of the vehicle board, the bearing board is hinged to the support frame, a trigger is fixed at the hinged part at the bottom of the bearing board, the bottom and the top of a telescopic motor are respectively hinged to the top of the vehicle board and the bottom of the bearing board, a controller is fixed on the top of the vehicle board, and a trigger button is arranged on the inner side of the handle. When the bearing board is in an inclined state, the control board controls the telescopic motor to adjust the angle of the bearing board, so as to achieve the purpose of automatically adjusting the bearing board according to the angle of the slope.

[0004] In the process of implementing the present utility model, the inventor found that there are at least the following problems in the prior art: 1. The patented technology uses a mercury trigger to prompt the angle change of the flatbed truck. When the flatbed truck is moving, the mercury is in a vibrating state, which is prone to misoperation, cannot ensure the correct feedback of the flatbed truck angle, and thus cannot keep the top plate of the flatbed truck horizontal; 2. Using the mercury trigger method and arranging trigger tubes at intervals can only feedback a limited number of angle changes of the flatbed truck, and can only be adjusted after the top plate of the flatbed truck tilts to a certain extent, cannot always keep the top surface of the flatbed truck horizontal, and cannot completely solve the problem of goods slipping. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present utility model develops a flatbed truck with automatic adjustment function, and the top plate of this flatbed truck can always remain horizontal, completely solving the problem of goods slipping.

[0006] The technical solution for the present utility model to solve the technical problem is as follows: An embodiment of the present utility model provides an automatically adjustable flatbed cart, including a vehicle body. The flatbed cart further includes a top plate, a bull's-eye bearing, a plumb bob, a pull rod, a bracket, and a spring. The top plate is arranged on the vehicle body. The bull's-eye bearing includes a spherical ball, a base, and a cover plate. The base is installed at the center of the top surface of the vehicle body. A spherical groove is provided on the top surface of the base. The spherical ball is installed in the spherical groove of the base. The cover plate is annular and is installed on the top surface of the base. A through hole is provided at the center of the bottom surface of the base, and the through hole communicates with the spherical groove. The lower end of the pull rod is connected to the center of the top surface of the plumb bob, and the upper end passes through the center of the bottom surface of the base and is connected to the spherical ball. The bracket is cross-shaped and is installed on the pull rod. The bracket is perpendicular to the pull rod, and the pull rod is located at the center of the bracket. A vertical spring is respectively provided at each of the four ends of the bracket, and the upper part of the spring contacts the bottom surface of the top plate.

[0007] As an optimization, the four sides of the bracket are respectively perpendicular to the four sides of the top plate.

[0008] As an optimization, the flatbed cart further includes an oil pressure buffer. The oil pressure buffer is vertically installed on the top surface of the vehicle body, and one is respectively provided below the center of each of the four sides of the top plate.

[0009] As an optimization, a vertical guide rod is respectively provided at each of the four ends of the bracket. The spring is installed on the guide rod, and the length of the guide rod is less than the distance between the bracket and the bottom surface of the top plate.

[0010] As an optimization, the flatbed cart further includes a linear push rod. The linear push rod is vertically installed on the top surface of the vehicle body, and one is respectively provided below the center of each of the four sides of the top plate. A button is further provided at the top of the guide rod.

[0011] As an optimization, the length of the guide rod is a, the distance between the guide rod and the center of the bracket is b, and the distance between the bracket and the bottom surface of the top plate is h, and h - a / b < tan10°. The top plate is set to be inclined at 10° to trigger the button.

[0012] As an optimization, the plumb bob is spherical or cylindrical.

[0013] As an optimization, a spherical groove is provided at the center of the bottom surface of the top plate. The size and position of the spherical groove correspond to those of the spherical ball, and the spherical ball is clamped into the spherical groove on the bottom surface of the top plate.

[0014] The effects provided in the utility model content are only the effects of the embodiments, rather than all the effects of the utility model. The above technical solutions have the following advantages or beneficial effects:

[0015] 1. The pull rod remains vertical under the gravity of the counterweight at all times, so that the bracket remains horizontal. The goods are loaded on the top plate. When loading the goods, adjust the position of the goods to make the top plate horizontal. The total weight of the top plate and the goods is transmitted to the vehicle body through the bull's-eye bearing. The force borne by the four springs is very small. When the ground is uneven or the vehicle passes through a slope, the vehicle body will tilt. However, since the bracket always remains horizontal, the springs level the top plate at all times. The weight of the goods is concentrated at the center of the top plate. The springs can achieve leveling of the top plate by applying a very small force. In actual application, the slope of the bottom surface is gently transitioned, and the top plate will not tilt suddenly and significantly. The continuous adjustment of the springs can meet the requirements, and the top plate will remain horizontal under the action of the springs. The top plate of this flatbed truck can always remain horizontal, completely solving the problem of goods slipping.

[0016] 2. The bracket is cross-shaped, and the four ends of the cross are the four ends of the bracket. The four sides of the bracket are perpendicular to the four sides of the top plate respectively, and the springs are facing the four sides of the top plate, facilitating the horizontal adjustment of the top plate.

[0017] 3. The oil buffer can slow down the movement speed of the top plate, providing time for the spring adjustment. The guide rod can limit the spring to prevent it from bending and losing its function during the compression process.

[0018] 4. When the springs cannot adjust the top plate in time or when the adjustment function of the springs fails due to the sliding of the goods on the top plate, the inclination angle of the top plate increases until one or two buttons are triggered. Then, the linear push rod on the side where the button is located extends, and the linear push rod on the opposite side contracts until all the buttons are released from the triggered state, realizing the leveling of the top plate.

[0019] 5. By providing a spherical groove at the center of the bottom surface of the top plate, the spherical ball is clamped into the spherical groove on the bottom surface of the top plate, which can limit the horizontal position of the top plate and prevent it from sliding. Description of the Drawings

[0020] Figure 1 It is the front view of an embodiment of the present utility model.

[0021] Figure 2 It is the left view of an embodiment of the present utility model.

[0022] Figure 3 is Figure 2 The sectional view along the A-A direction.

[0023] Figure 4 It is the perspective view of an embodiment of the present utility model with the vehicle body hidden.

[0024] Figure 5 is Figure 2 The perspective view after sectional view along the A-A direction.

[0025] Figure 6 isFigure 3 Partial enlarged view of area B in the middle.

[0026] Figure 7 It is Figure 5 Partial enlarged view of area C in the middle.

[0027] Wherein: vehicle body 1, top plate 2, bull's-eye bearing 3, weight 4, pull rod 5, bracket 6, spring 7, oil buffer 8, linear push rod 9, button 10, spherical ball 31, base 32, cover plate 33, guide rod 61. Specific implementation mode

[0028] In order to clearly illustrate the technical features of this solution, the present invention will be elaborated in detail below through specific implementation modes and in combination with its accompanying drawings.

[0029] Figures 1 to 7 This is an embodiment of the present utility model. As Figure 3 shown, an adjustable flatbed cart includes a vehicle body 1. The flatbed cart further includes a top plate 2, a bull's-eye bearing 3, a weight 4, a pull rod 5, a bracket 6, and a spring 7. The top plate 2 is arranged on the vehicle body 1. As Figure 6 shown, the bull's-eye bearing 3 includes a spherical ball 31, a base 32, and a cover plate 33. The base 32 is installed at the center of the top surface of the vehicle body 1. A spherical groove is provided on the top surface of the base 32. The spherical ball 31 is installed in the spherical groove of the base 32. The cover plate 33 is annular, and the cover plate 33 is installed on the top surface of the base 32. A through circular hole is provided at the center of the bottom surface of the base 32, and the circular hole communicates with the spherical groove. The lower end of the pull rod 5 is connected to the center of the top surface of the weight 4, and the upper end passes through the center of the bottom surface of the base 32 and is connected to the spherical ball 31. The bracket 6 is cross-shaped, and the bracket 6 is installed on the pull rod 5. The bracket 6 is perpendicular to the pull rod 5, and the pull rod 5 is located at the center of the bracket 6. A vertical spring 7 is respectively provided at the four ends of the bracket 6, and the upper part of the spring 7 is in contact with the bottom surface of the top plate 2. The weight 4 is cylindrical.

[0030] The pull rod 5 always remains vertical under the action of the gravity of the weight 4, so that the bracket 6 remains horizontal. The goods are loaded on the top plate 2. When loading, the position of the goods is adjusted to make the top plate 2 horizontal. The total weight of the top plate 2 and the goods is transmitted to the vehicle body 1 through the bull's-eye bearing 3. The force borne by the four springs 7 is very small. When the ground is uneven or when passing through a slope, the vehicle body 1 will tilt. However, since the bracket 6 always remains horizontal, the spring 7 is always leveling the top plate 2. The weight of the goods is concentrated at the center of the top plate 2. The spring 7 can apply a very small force to level the top plate 2. And in practical applications, the slope of the bottom surface is gently transitioned, and the top plate 2 will not suddenly tilt greatly. The continuous adjustment of the spring 7 can meet the requirements, and the top plate 2 will remain horizontal under the action of the spring 7. The top plate of this flatbed cart can always remain horizontal, completely solving the problem of goods slipping.

[0031] The four sides of the bracket 6 are respectively perpendicular to the four sides of the top plate 2. The bracket 6 is in a cross shape, and the four ends of the cross are the four ends of the bracket 6. The four sides of the bracket 6 are respectively perpendicular to the four sides of the top plate 2, and the springs 7 are opposite to the four sides of the top plate 2, facilitating the horizontal adjustment of the top plate 2.

[0032] The flatbed cart further includes an oil pressure buffer 8, which is vertically installed on the top surface of the vehicle body 1, and one oil pressure buffer 8 is respectively arranged below the centers of the four sides of the top plate 2. The oil pressure buffer 8 can slow down the movement speed of the top plate 2, providing time for the adjustment of the springs 7.

[0033] One vertical guide rod 61 is respectively arranged at the four ends of the bracket 6, the spring 7 is installed on the guide rod 61, and the length of the guide rod 61 is less than the distance between the bracket 6 and the bottom surface of the top plate 2. The guide rod 61 can limit the spring 7 to prevent the spring 7 from bending and losing its function during the compression process.

[0034] The flatbed cart further includes a linear push rod 9, which is vertically installed on the top surface of the vehicle body 1, and one linear push rod 9 is respectively arranged below the centers of the four sides of the top plate 2; a button 10 is also arranged at the top of the guide rod 61. When the spring 7 cannot adjust the top plate 2 in time or the adjustment function of the spring 7 fails due to the sliding of the goods on the top plate 2, the inclination angle of the top plate 2 increases until one or two buttons 10 are triggered, then the linear push rod 9 on the side where the button 10 is located is extended, and the linear push rod 9 on the opposite side is contracted until all the buttons 10 are released from the triggered state, realizing the leveling of the top plate 2.

[0035] The length of the guide rod 61 is a, the distance between the guide rod 61 and the center of the bracket 6 is b, and the distance between the bracket 6 and the bottom surface of the top plate 2 is h, and h - a / b < tan10°. The top plate 2 is set to tilt 10° to trigger the button 10.

[0036] A spherical groove is arranged at the center of the bottom surface of the top plate 2, and the size and position of the spherical groove correspond to those of the spherical ball 31, and the spherical ball 31 is stuck into the spherical groove at the bottom surface of the top plate 2. By arranging a spherical groove at the center of the bottom surface of the top plate 2 and sticking the spherical ball 31 into the spherical groove at the bottom surface of the top plate 2, the horizontal position of the top plate 2 can be restricted to prevent it from sliding.

[0037] Although the specific implementation manners of the utility model are described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the utility model. Based on the technical solutions of the utility model, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the utility model.

Claims

1. An automatically adjustable flatbed cart, comprising a vehicle body (1), characterized in that: The flatbed cart further includes a top plate (2), a bull's-eye bearing (3), a weight (4), a pull rod (5), a bracket (6), and a spring (7). The top plate (2) is arranged on the vehicle body (1). The bull's-eye bearing (3) includes a spherical ball (31), a base (32), and a cover plate (33). The base (32) is installed at the center of the top surface of the vehicle body (1). A spherical groove is provided on the top surface of the base (32). The spherical ball (31) is installed in the spherical groove of the base (32). The cover plate (33) is annular and is installed on the top surface of the base (32). A through circular hole is provided at the center of the bottom surface of the base (32), and the circular hole communicates with the spherical groove. The lower end of the pull rod (5) is connected to the center of the top surface of the weight (4), and the upper end passes through the center of the bottom surface of the base (32) and is connected to the spherical ball (31). The bracket (6) is cross-shaped and is installed on the pull rod (5). The bracket (6) is perpendicular to the pull rod (5), and the pull rod (5) is located at the center of the bracket (6). A vertical spring (7) is respectively provided at the four ends of the bracket (6), and the upper part of the spring (7) contacts the bottom surface of the top plate (2).

2. The self-adjustable flatbed cart according to claim 1, characterized in that, The four sides of the bracket (6) are respectively perpendicular to the four sides of the top plate (2).

3. The adjustable flatbed cart according to claim 1, characterized in that, The flatbed cart further includes an oil buffer (8). The oil buffer (8) is vertically installed on the top surface of the vehicle body (1), and one oil buffer (8) is respectively provided below the centers of the four sides of the top plate (2).

4. The self - adjustable flatbed cart according to claim 1, characterized in that, A vertical guide rod (61) is respectively provided at the four ends of the bracket (6), and the spring (7) is installed on the guide rod (61). The length of the guide rod (61) is less than the distance between the bracket (6) and the bottom surface of the top plate (2).

5. The automatic-adjustable flatbed cart according to claim 4, wherein The flatbed cart further includes a linear push rod (9). The linear push rod (9) is vertically installed on the top surface of the vehicle body (1), and one linear push rod (9) is respectively provided below the centers of the four sides of the top plate (2). A button (10) is further provided at the top of the guide rod (61).

6. The self - adjustable flatbed cart according to claim 5, characterized in that, The length of the guide rod (61) is a, the distance between the guide rod (61) and the center of the bracket (6) is b, and the distance between the bracket (6) and the bottom surface of the top plate (2) is h. (h - a) / b < tan10°.

7. The self-adjustable flatbed cart according to claim 1, wherein The weight (4) is spherical or cylindrical.

8. The self-adjustable flatbed cart according to claim 1, characterized in that, A spherical groove is provided at the center of the bottom surface of the top plate (2). The size and position of the spherical groove correspond to those of the spherical ball (31), and the spherical ball (31) is clamped into the spherical groove on the bottom surface of the top plate (2).

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