A gravity center height adjusting mechanism of a trackless self-propelled platform vehicle

Abstract

This utility model discloses a center-of-gravity height adjustment mechanism for a trackless self-propelled platform vehicle. The mechanism adjusts the center-of-gravity height of the equipment platform, with a trackless trolley mounted on the outside of the platform. Both ends of the trackless trolley are equipped with winding components for lifting and adjusting the platform. Tensioning components are bolted to both ends of the trackless trolley, and each tensioning component has a rope groove symmetrically formed along its axis on one side of its inner cavity. Simultaneously, a pressure plate is inclined downwards within the inner cavity of the tensioning component. This design achieves reliable unidirectional locking of the steel rope through the coordinated action of the pressure plate and the coiling spring in the tensioning component. This effectively prevents reverse slippage due to gravity or vibration after winding, ensuring the equipment platform maintains its target height stably and avoiding drops and fluctuations.

Description

Technical Field

[0001] This utility model belongs to the technical field of trackless self-propelled platform vehicles, and particularly relates to a center of gravity height adjustment mechanism for trackless self-propelled platform vehicles. Background Technology

[0002] In existing trackless self-propelled platform vehicle height adjustment technology, the inability to reliably lock the steel cable after it is wound up is a core problem that urgently needs to be solved. Specifically, traditional winding mechanisms generally lack an effective one-way locking mechanism when driving the steel cable to lift the equipment platform, resulting in the steel cable not being stably fixed after it is wound up.

[0003] When the equipment platform is raised to the target height, the steel cable maintains its position solely through the passive tension of the drive mechanism. However, due to the continuous effect of the equipment platform's own weight or external environmental vibrations (such as mechanical impacts from the working components or bumps caused by uneven ground), the steel cable is prone to reverse slippage. This slippage not only causes an uncontrollable slow descent of the equipment platform's height but may also lead to repeated fluctuations in the lifting height, making it impossible to stably maintain the required center of gravity position. Utility Model Content

[0004] The purpose of this utility model is to provide a center of gravity height adjustment mechanism for a trackless self-propelled platform vehicle, so as to solve the technical problem mentioned in the background art that the steel cable cannot be reliably locked after being wound up, which easily causes the equipment platform height to drop and the lifting height to fluctuate.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows: A center of gravity height adjustment mechanism for a trackless self-propelled platform vehicle, used for adjusting the center of gravity height of the equipment platform, wherein a trackless trolley is mounted on the outside of the equipment platform, and both the front and rear ends of the trackless trolley are equipped with winding components for lifting and adjusting the equipment platform. Both the front and rear ends of the trackless trolley are bolted with tensioning components, and one side of the inner cavity of the tensioning component is symmetrically provided with rope grooves along the axis. At the same time, a clamping plate is inclined downward in the inner cavity of the tensioning component.

[0006] Preferably, the winding assembly includes a plurality of guide pulleys arranged symmetrically to each other and an adjusting pulley, wherein the guide pulleys are fixedly connected to the side wall of the trackless trolley by a shaft fitted into and mounted on the end of its center of gravity.

[0007] Preferably, the winding assembly further includes a mounting base fitted into the end of the side wall of the trackless trolley, and two sets of guide pulleys are installed at both ends of the inner cavity of the mounting base.

[0008] Preferably, the surfaces of the first guide pulley, the adjusting pulley, and the second guide pulley are all provided with a steel rope, and one end of the steel rope passes through the second guide pulley and is connected to one side of the top of the equipment platform.

[0009] Preferably, one end of the abutment plate is fitted with a mounting shaft, and a coil spring is fitted onto the rear end of the mounting shaft.

[0010] Preferably, the side wall of the tensioning assembly is movably mounted with a telescopic rod for adjusting the angle of the abutment plate.

[0011] The mounting shaft has an adjusting sleeve fitted at its end, and the end of the adjusting sleeve and the output end of the telescopic rod are movably connected by a rotating shaft.

[0012] Preferably, the trackless trolley is equipped with a drive mechanism for winding and unwinding the steel rope at both its front and rear ends.

[0013] Preferably, the drive mechanism includes hydraulic cylinder telescopic components symmetrically installed at the front and rear ends of the trackless trolley, and the output end of the hydraulic cylinder telescopic component is connected to the end of the steel rope adjacent to the extension rod.

[0014] Preferably, the drive mechanism includes a winding machine symmetrically arranged at the front and rear ends of the trackless trolley, and the winding machine is installed on the surface of the trackless trolley through a U-shaped plate on one side. The output end of the winding machine is connected to a winding reel for winding and pulling the steel rope, wherein the end of the steel rope near the winding reel is wound around the outer surface of the winding reel.

[0015] Preferably, a limiting ratchet is fitted at the output end of the winding machine and on one side of the winding reel, and a limiting pawl assembly is installed on one side of the limiting ratchet.

[0016] The center-of-gravity height adjustment mechanism of the trackless self-propelled platform vehicle of this utility model has the following advantages:

[0017] This invention relates to a center-of-gravity height adjustment mechanism for a trackless self-propelled platform vehicle. The mechanism connects the platform to the drive mechanism via steel cables in the winding assemblies at both ends of the trackless trolley. When the drive mechanism stretches the steel cables, the cables move downwards, causing the platform to rise. At this time, the clamping plate inside the tensioning assembly tilts downwards under the action of the coil spring, not obstructing the movement of the steel cables, thus achieving one-way locking. When it is necessary to lower the platform, the telescopic rod pushes the adjusting sleeve to change the angle of the clamping plate, releasing the lock on the steel cables. The drive mechanism then releases the cables, causing the platform to move downwards, thereby completing the adjustment of the platform's center-of-gravity height. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1This is one of the schematic diagrams of the overall structure of the trackless trolley and the assembly of the hydraulic cylinder telescopic component of this utility model.

[0020] Figure 2 The second schematic diagram shows the overall structure of the trackless trolley and the assembly of the hydraulic cylinder telescopic components of this utility model.

[0021] Figure 3 This is a schematic diagram of the assembly structure of the hydraulic cylinder telescopic component and the winding assembly of this utility model.

[0022] Figure 4 This is one of the schematic diagrams of the overall structure of the trackless trolley and the assembly of the winding machine of this utility model;

[0023] Figure 5 The second schematic diagram shows the overall structure of the trackless trolley and the assembly of the winding machine of this utility model.

[0024] Figure 6 This is a schematic diagram of the structure and assembly of the winding machine and winding reel of this utility model with the winding assembly;

[0025] Figure 7 This is a schematic diagram of the assembly structure of the limiting ratchet and limiting pawl of this utility model;

[0026] Figure 8 This is a schematic diagram of the tensioning component structure of this utility model;

[0027] Figure 9 This is an exploded view of the tensioning component structure of this utility model.

[0028] The markings in the diagram are as follows: 100, trackless trolley; 110, traveling component; 120, equipment platform; 200, winding component; 210, guide pulley one; 220, adjusting pulley; 230, mounting base; 231, guide pulley two; 240, steel rope; 300, hydraulic cylinder telescopic component; 400, winding machine; 410, winding reel; 420, limiting ratchet; 430, limiting pawl assembly; 500, tensioning component; 501, rope groove; 510, telescopic rod; 511, mounting base; 520, clamping plate; 530, coil spring component; 540, mounting shaft; 550, adjusting push sleeve. Detailed Implementation

[0029] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0030] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0031] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0033] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0034] To better understand the purpose, structure, and function of this utility model, the following detailed description, in conjunction with the accompanying drawings, provides an explanation of the center of gravity height adjustment mechanism for a trackless self-propelled platform vehicle.

[0035] like Figures 1-9 As shown, the present invention discloses a center of gravity height adjustment mechanism for a trackless self-propelled platform vehicle, which is used to adjust the center of gravity height of the equipment platform 120, while a trackless trolley 100 is mounted on the outside of the equipment platform 120; the trackless trolley 100 and the equipment platform 120 are used in conjunction.

[0036] Specifically, a traveling component 110 is installed on the outside of the trackless trolley 100, which can drive the trackless trolley 100 to move. Both the front and rear ends of the trackless trolley 100 are equipped with a winding component 200 for lifting and adjusting the equipment platform 120. When lifting and adjusting the position of the equipment platform 120, both the front and rear ends of the trackless trolley 100 are bolted with a tensioning component 500. The inner cavity of the tensioning component 500 has a rope groove 501 symmetrically opened along the axis on one side, and the steel rope 240 in the winding component 200 is inserted into it. At the same time, a pressing plate 520 is inclined downward in the inner cavity of the tensioning component 500. The pressing plate 520, together with the rope groove 501, presses against the surface of the steel rope 240 to lock and limit it in one direction. The tensioning component 500 can limit and lock the steel rope 240 in the winding component 200.

[0037] like Figures 1 to 6 As shown, please refer to the following for details. Figure 3 and Figure 6 The winding assembly 200 includes a plurality of guide pulleys 210 and an adjusting pulley 220 symmetrically arranged. The guide pulleys 210 are fixedly connected to the side wall of the trackless trolley 100 via a shaft fitted onto its center of gravity. The adjusting pulleys 220 are mounted on the surface of the trackless trolley 100 in the same manner as the guide pulleys 210. The guide pulleys 210 and the adjusting pulleys 220 guide the steel cable 240, changing its position.

[0038] As a further step in this solution, to reduce friction when the steel rope 240 contacts the guide pulley 210 and the adjusting pulley 220, the guide pulley 210 and the adjusting pulley 220 can be movably connected to the adjacent shafts via bearings. When the steel rope 240 is stretched, due to the influence of the steel rope 240, the adjacent guide pulley 210 and the adjusting pulley 220 will only rotate around the adjacent shafts, reducing friction between the steel rope 240 and the surfaces of the adjacent guide pulley 210 and the adjusting pulley 220, thereby reducing wear and tear during long-term use.

[0039] As a further optimization of this solution, when the guide pulley 210 and the adjusting pulley 220 are integrally fixedly connected to the connecting shaft, in order to reduce the friction between the steel rope 240 and the guide pulley 210 and the adjusting pulley 220, ball grooves can be opened on the surface of the guide pulley 210 and the adjusting pulley 220, and rolling balls can be movably embedded in the ball grooves of the guide pulley 210 and the adjusting pulley 220. When the steel rope 240 is stretched, the rolling balls on the guide pulley 210 and the adjusting pulley 220 come into contact with the steel rope 240, and the rolling balls slide in the ball grooves, thereby reducing friction.

[0040] In practical use, to reduce costs and reduce friction between the steel rope 240 and the adjacent guide pulley 210 and adjusting pulley 220, the surfaces of the guide pulley 210 and adjusting pulley 220 can be coated with lubricant at regular intervals to reduce friction between the steel rope 240 and the guide pulley 210 and adjusting pulley 220 when the steel rope 240 is stretched.

[0041] The winding assembly 200 also includes a mounting base 230 fitted into the end of the side wall of the trackless trolley 100. Two sets of guide pulleys 231 are installed at both ends of the inner cavity of the mounting base 230. The guide pulleys 231 are used to guide the steel rope 240 so that it can pass through the trackless trolley 100 and connect to the equipment platform 120.

[0042] A steel rope 240 is provided on the surfaces of the guide pulley 210, the adjusting pulley 220, and the guide pulley 231. One end of the steel rope 240 passes through the guide pulley 231 and is connected to the top side of the equipment platform 120, while the other end of the steel rope 240 passes through the adjusting pulley 220 and is connected to the drive mechanism. The drive mechanism is used to stretch the steel rope 240 to adjust the position of the equipment platform 120.

[0043] Specifically, a mounting shaft 540 is installed through one end of the clamping plate 520, and the shaft end of the mounting shaft 540 extends beyond the outside of the tensioning assembly 500. The surfaces of the mounting shaft 540 and the tensioning assembly 500 are connected via bearings. Figure 8 and Figure 9 As shown, a coil spring 530 is fitted on the rear end of the mounting shaft 540. The coil spring 530 can keep the clamping plate 520 in a slanted clamping state. When the steel rope 240 moves downward, the clamping plate 520, which is in a downward tilting state, does not restrain it, so that the steel rope 240 can be stretched downward by the drive mechanism to drive the equipment platform 120 to move upward. When the reverse control drive mechanism drives the steel rope 240 to move upward, the clamping plate 520, which is in a downward tilting state, will clamp and lock the steel rope 240, preventing it from moving freely. When the clamping plate 520 is adjusted to continue tilting downward by the telescopic rod 510, the clamping plate 520 can no longer clamp the steel rope 240. Therefore, the drive mechanism can be controlled to release the steel rope 240, thereby driving the equipment platform 120 to move downward and changing the center of gravity height of the equipment platform 120.

[0044] The tensioning assembly 500 has a telescopic rod 510 that adjusts the angle of the abutment plate 520 movably mounted on its side wall. The telescopic rod 510 has a mounting base 511 on its outer side. The mounting base 511 is movably connected to the surface of the telescopic rod 510 via a pivot. The other end of the mounting base 511 is fixedly welded to the surface of the adjacent tensioning assembly 500.

[0045] Specifically, such as Figure 9As shown, the shaft end of the mounting shaft 540 is fitted with an adjusting push sleeve 550, and the end of the adjusting push sleeve 550 and the output end of the telescopic rod 510 are movably connected by a rotating shaft.

[0046] In this design, when the clamping plate 520 is adjusted to be in a non-contact state with the steel rope 240, the telescopic rod 510 pushes the adjusting sleeve 550, which in turn moves the mounting shaft 540, thereby changing the tilt angle of the clamping plate 520 and releasing it from its restriction on the steel rope 240. This allows the steel rope 240 to be laid down, achieving the purpose of lowering the center of gravity of the equipment platform 120.

[0047] As a further optimization of this solution, there are multiple sets of tensioning components 500, which are installed on the surface of the trackless trolley 100. Each tensioning component 500 is equipped with a retaining plate 520, so that multiple sets of retaining plates 520 can lock the retracted steel rope 240 together.

[0048] In order to stretch the steel rope 240 and adjust the center of gravity of the equipment platform 120, drive mechanisms for winding and unwinding the steel rope 240 are installed at both ends of the trackless trolley 100.

[0049] Specifically, such as Figures 1 to 3 This is the first embodiment of the drive mechanism, which includes hydraulic cylinder telescopic components 300 symmetrically installed at the front and rear ends of the trackless trolley 100, and the output end of the hydraulic cylinder telescopic component 300 is connected to the adjacent end of the steel rope 240 through an extension rod.

[0050] Therefore, when the output end of the hydraulic cylinder telescopic component 300 retracts, it can pull the steel rope 240 to move on the guide pulley 210, the adjusting pulley 220 and the mounting base 230, thereby pulling the equipment platform 120 upward. Conversely, when the output end of the hydraulic cylinder telescopic component 300 extends outward, the steel rope 240 is released, causing the equipment platform 120 to move downward on the trackless trolley 100.

[0051] Specifically, in this solution, the hydraulic cylinder telescopic component 300 is a hydraulic cylinder, and its specific model is selected according to the actual use requirements. It is controlled by a controller, and the solution of using a controller to control the hydraulic cylinder is existing technology, which will not be described in detail in this solution.

[0052] Specifically, such as Figures 4 to 6 This is a second embodiment of the drive mechanism, which includes winding machines 400 symmetrically arranged at the front and rear ends of the trackless trolley 100. The winding machines 400 are mounted to the surface of the trackless trolley 100 via a U-shaped plate on one side. The fixed end of the winding machine 400 is fixedly connected to the surface of the U-shaped plate by bolts, while the U-shaped plate is connected to the trackless trolley 100 by welding. Figure 7As shown, the output end of the winding machine 400 is connected to a winding reel 410 for winding and pulling the steel rope 240. The end of the steel rope 240 near the winding reel 410 is coiled around the outer surface of the winding reel 410. The winding machine 400 drives the winding reel 410 to move, which can wind the steel rope 240 and pull the steel rope 240, thereby adjusting the position of the equipment platform 120.

[0053] A limiting ratchet 420 is installed at the output end of the winding machine 400 and on one side of the winding reel 410. A limiting pawl assembly 430 is installed on one side of the limiting ratchet 420. The limiting pawl assembly 430 and the limiting ratchet 420 work together. The limiting pawl assembly 430 can limit the limiting ratchet 420 in one direction to prevent the winding machine 400 from bearing too much reverse force.

[0054] As a further optimization of this solution, an electric push rod is movably mounted on the shaft end of the limit pawl assembly 430. The electric push rod extends to insert the limit pawl assembly 430 into the limit ratchet 420 for engagement.

[0055] The working principle of the center of gravity height adjustment mechanism of a trackless self-propelled platform vehicle: In this scheme, the equipment platform 120 is connected to the drive mechanism through the steel rope 240 in the winding assembly 200 at both ends of the trackless trolley 100. When the drive mechanism stretches the steel rope 240, the steel rope 240 moves downward and drives the equipment platform 120 to move upward. At this time, the abutment plate 520 in the tensioning assembly 500 tilts downward under the action of the coil spring 530 without hindering the movement of the steel rope, thus achieving one-way locking. When it is necessary to lower the equipment platform 120, the telescopic rod 510 pushes the adjusting sleeve 550 to change the angle of the abutment plate 520 to release the lock on the steel rope 240. The drive mechanism releases the cable to make the equipment platform 120 move downward, thereby completing the adjustment of the center of gravity height of the equipment platform 120.

[0056] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A center-of-gravity height adjustment mechanism for a trackless self-propelled platform vehicle, used for adjusting the center-of-gravity height of an equipment platform (120), wherein a trackless trolley (100) is mounted on the outside of the equipment platform (120), characterized in that: The trackless trolley (100) is equipped with a winding assembly (200) for lifting and adjusting the equipment platform (120) at both the front and rear ends. The trackless trolley (100) is bolted with a tensioning assembly (500). The tensioning assembly (500) has a rope groove (501) symmetrically opened along the axis on one side of its inner cavity. At the same time, the tensioning assembly (500) has a pressing plate (520) inclined downward in its inner cavity.

2. The center-of-gravity height adjustment mechanism of the trackless self-propelled platform vehicle according to claim 1, characterized in that: The winding assembly (200) includes a plurality of guide pulleys (210) arranged symmetrically to each other and an adjusting pulley (220). The guide pulleys (210) are fixedly connected to the side wall of the trackless trolley (100) by a shaft fitted into the end of its center of gravity.

3. The center-of-gravity height adjustment mechanism of the trackless self-propelled platform vehicle according to claim 2, characterized in that: The winding assembly (200) also includes a mounting base (230) fitted into the end of the side wall of the trackless trolley (100), and two sets of guide pulleys (231) are installed at both ends of the inner cavity of the mounting base (230).

4. The center of gravity height adjustment mechanism of the trackless self-propelled platform vehicle according to claim 3, characterized in that: The surfaces of the first guide pulley (210), the adjusting pulley (220) and the second guide pulley (231) are all provided with a steel rope (240), and one end of the steel rope (240) passes through the second guide pulley (231) and is connected to one side of the top of the equipment platform (120).

5. The center-of-gravity height adjustment mechanism of the trackless self-propelled platform vehicle according to claim 4, characterized in that: One end of the abutment plate (520) is fitted with a mounting shaft (540), and a coil spring (530) is fitted on the rear end of the mounting shaft (540).

6. The center of gravity height adjustment mechanism of the trackless self-propelled platform vehicle according to claim 5, characterized in that: The tensioning assembly (500) has a telescopic rod (510) movably mounted on its side wall for adjusting the angle of the abutment plate (520); The mounting shaft (540) has an adjusting sleeve (550) fitted on its shaft end, and the end of the adjusting sleeve (550) and the output end of the telescopic rod (510) are movably connected by a rotating shaft.

7. The center of gravity height adjustment mechanism of the trackless self-propelled platform vehicle according to claim 4, characterized in that: The trackless trolley (100) is equipped with a drive mechanism for winding and unwinding the steel rope (240) at both the front and rear ends.

8. The center of gravity height adjustment mechanism of the trackless self-propelled platform vehicle according to claim 7, characterized in that: The drive mechanism includes hydraulic cylinder telescopic components (300) symmetrically installed at the front and rear ends of the trackless trolley (100), and the output end of the hydraulic cylinder telescopic component (300) is connected to the adjacent end of the steel rope (240) through an extension rod.

9. The center of gravity height adjustment mechanism of the trackless self-propelled platform vehicle according to claim 7, characterized in that: The driving mechanism includes a winding machine (400) symmetrically arranged at the front and rear ends of the trackless trolley (100). The winding machine (400) is mounted on the surface of the trackless trolley (100) through a U-shaped plate on one side. The output end of the winding machine (400) is connected to a winding reel (410) for winding the pulling steel rope (240). The end of the steel rope (240) near the winding reel (410) is coiled around the outer surface of the winding reel (410).

10. The center-of-gravity height adjustment mechanism of the trackless self-propelled platform vehicle according to claim 9, characterized in that: A limiting ratchet (420) is fitted at the output end of the winding machine (400) and on one side of the winding reel (410), and a limiting pawl assembly (430) is installed on one side of the limiting ratchet (420).

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