An adaptive clamping device and a transport vehicle

Abstract

This invention discloses an adaptive clamping device and a transport vehicle, relating to the field of clamping device technology. The adaptive clamping device includes a base, a limiting slider, two clamping arms, and an elastic reset component. When the object to be clamped is inserted through the opening at the top of the clamping arm, its own weight or thrust drives the limiting slider to overcome the elastic force of the elastic reset component and move downward. Then, through a lever transmission mechanism, the tops of the two clamping arms synchronously retract inward, automatically achieving stable clamping of the object. This process does not require motor drive or continuous manual adjustment, and can adapt to different objects within a certain size range. The entire device has a simple structure, low cost, and convenient operation. Moreover, under dynamic working conditions such as vibration or tilting, it can always maintain a reliable locking state due to its mechanical self-locking characteristics, significantly improving the efficiency and reliability of handling and loading operations.

Description

Technical Field

[0001] This invention relates to the field of clamping device technology, and more specifically to an adaptive clamping device and a transport vehicle. Background Technology

[0002] In the land and air logistics transportation sector, trailers, lifting platforms, and container transfer equipment frequently and precisely handle and mount various types of equipment, such as pods, auxiliary fuel tanks, and standard containers. These operations place near-stringent demands on safety, reliability, and efficiency: in wartime environments, operations must be rapid and covert, maintaining absolute reliability even under turbulence, vibration, and severe weather; in aviation support, the mounting process must ensure zero damage to precision interfaces and expensive equipment; and in logistics hubs, high-speed turnaround and broad adaptability to different cargo specifications are required.

[0003] Currently, common clamping methods mainly rely on motor-driven solutions and manual mechanical locking solutions. Motor-driven solutions can achieve precise adjustment of clamping force and status feedback through servo control systems, and have a high degree of automation. However, their system structure is complex, and the purchase and maintenance costs are high. Moreover, their normal operation always depends on a continuous and stable external power source. On the other hand, the widely used manual locking solution, although simple in structure and not dependent on external power, requires operators to perform tedious force and position adjustments one by one when dealing with external objects of different sizes and shapes. This results in low work efficiency, high labor intensity for personnel, and, due to reliance on human experience, is prone to the risk of loosening due to insufficient locking or the risk of equipment damage due to over-locking, leading to poor reliability.

[0004] Therefore, there is an urgent need for a purely mechanical clamping device that can achieve adaptive clamping without external power or continuous manual intervention, and maintain reliable locking and stability under complex dynamic working conditions, so as to fundamentally improve the efficiency and reliability of transport equipment operation. Summary of the Invention

[0005] The purpose of this invention is to provide an adaptive clamping device and a transport vehicle to solve the problems existing in the prior art, and to achieve high efficiency and high reliability in handling and loading operations.

[0006] To achieve the above objectives, the present invention provides the following solution: This invention provides an adaptive clamping device, including a base, a limiting slider, two clamping arms, and an elastic reset member. The limiting slider is slidably disposed on the base along the longitudinal direction. The two clamping arms are rotatably connected to the base, forming a lever structure, and are symmetrically arranged on both sides of the limiting slider. An opening for clamping an object to enter and exit is formed between the top ends of the two clamping arms. The two clamping arms have an open state, a clamping state, and a clamping state. The bottom end of each clamping arm is movably connected to the limiting slider so that when the limiting slider moves longitudinally toward the opening, it can utilize the lever. The principle is that when the tips of the two clamping arms move away from each other to an open state, and move longitudinally away from the opening, the tips of the two clamping arms can be brought closer together to a clamping state by lever principle; the elastic reset member is connected between the base and the limiting slider; under normal conditions, the elastic reset member is used to drive the limiting slider to maintain a first position facing the opening, at which time the two clamping arms are in an open state; when the limiting slider is moved to a second position by a force in the direction away from the opening, the two clamping arms switch from the open state to the clamping state.

[0007] In some embodiments, the base is provided with a slide rail, and the limiting slider is slidably engaged in the slide rail; each clamping arm has a guide groove at its bottom end; the limiting slider is provided with two guide pins, which are respectively housed in the guide grooves of the two clamping arms; when the limiting slider slides longitudinally, the movement of the guide pins in the corresponding guide grooves drives the two clamping arms to rotate, thereby realizing state switching.

[0008] In some embodiments, the limiting slider is T-shaped and includes mutually perpendicular slider bodies and guide pins.

[0009] In some embodiments, the slide has a rectangular cross-section, and the slider body has a rectangular cross-section that matches the slide, so as to restrict the limiting slider from rotating around its axis.

[0010] In some embodiments, a pressure plate is provided on the top of the limiting slider, and the area of ​​the pressure plate is larger than the cross-sectional area of ​​the limiting slider; the pressure plate is used to increase the contact area between the limiting slider and the clamped external object.

[0011] In some embodiments, the inner gripping side of the clamping arm is provided with a rough layer to increase the friction between the clamped objects.

[0012] In some embodiments, the elastic reset element is a helical spring, the base is provided with a first hanging point, the limiting slider is provided with a second hanging point, and the two ends of the helical spring are respectively connected to the first hanging point and the second hanging point.

[0013] In some embodiments, the clamping arm is C-shaped.

[0014] In some embodiments, the base is further provided with a cover plate, which is used to limit the horizontal displacement of the two clamping arms and the limiting slider.

[0015] The present invention also provides a transport vehicle including at least one adaptive clamping device as described in any of the above claims.

[0016] The present invention achieves the following technical effects compared to the prior art: This invention provides an adaptive clamping device, comprising a base, a limiting slider, two clamping arms, and an elastic reset component. When an object is inserted through the opening at the top of the clamping arms, its own weight or thrust drives the limiting slider to move downwards against the elastic force of the reset component. This, in turn, via a lever transmission mechanism, causes the tops of the two clamping arms to synchronously retract inwards, automatically achieving stable clamping of the object. This process requires no motor drive or continuous manual adjustment and can adapt to different objects within a certain size range. The entire device has a simple structure, low cost, and convenient operation. Furthermore, under dynamic conditions such as vibration or tilting, its mechanical self-locking characteristic ensures a reliable locking state, significantly improving the efficiency and reliability of handling and mounting operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the adaptive clamping device in the clamping state in some embodiments; Figure 2 This is a schematic diagram of the adaptive clamping device in the open state in some embodiments; Figure 3 This is an exploded view of the adaptive clamping device in some embodiments; Figure 4 This is a schematic diagram of the limit slider structure; In the figure: 1-base; 2-limiting slider; 21-slider body; 22-guide pin; 23-pressure plate; 24-bolt; 3-clamping arm; 31-guide groove; 4-elastic reset component; 5-cover plate; 51-screw. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The purpose of this invention is to provide an adaptive clamping device and a transport vehicle to solve the problems existing in the prior art, which are highly convenient and reliable.

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1 Combination Figures 1 to 4 This embodiment provides an adaptive clamping device, including a base 1, a limiting slider 2, two clamping arms 3, and an elastic reset member 4. The limiting slider 2 is slidably disposed on the base 1 along the longitudinal direction. The two clamping arms 3 are rotatably connected to the base 1, forming a lever structure, and are symmetrically arranged on both sides of the limiting slider 2. An opening for clamping an object is formed between the top ends of the two clamping arms 3. The two clamping arms 3 have an open state and a clamping state. The bottom end of each clamping arm 3 is movably connected to the limiting slider 2 so that when the limiting slider 2 moves longitudinally toward the opening, it can... By utilizing the lever principle, the tops of the two clamping arms 3 are moved away from each other to an open state. When moving longitudinally away from the opening, the tops of the two clamping arms 3 are moved closer together to a clamping state by utilizing the lever principle. The elastic reset member 4 is connected between the base 1 and the limiting slider 2. Under normal conditions, the elastic reset member 4 is used to drive the limiting slider 2 to remain in the first position facing the opening, at which time the two clamping arms 3 are in an open state. When the limiting slider 2 is moved to the second position by the force acting in the direction away from the opening, the two clamping arms 3 switch from the open state to the clamping state.

[0023] In this embodiment, when the object is inserted through the opening at the top of the clamping arm 3, its own weight or thrust drives the limiting slider 2 to move downwards against the elastic force of the elastic reset member 4. This, in turn, via a lever transmission mechanism, causes the tops of the two clamping arms 3 to synchronously retract inwards, automatically achieving stable clamping of the object. Simultaneously, when the object needs to be removed, the elastic reset member 4 drives the limiting slider 2 to move towards the opening, at which point the tops of the two clamping arms 3 move away from each other, thus opening the clamping arms 3. This process requires no motor drive or continuous manual adjustment and can adapt to different objects within a certain size range. The entire device has a simple structure, low cost, and convenient operation. Furthermore, under dynamic conditions such as vibration or tilting, its mechanical self-locking characteristic ensures a reliable locking state, significantly improving the safety, reliability, and efficiency of handling and loading operations.

[0024] It is understandable that the length of the limiting slider 2 is greater than the longitudinal movement of the clamping arm 3 due to the lever structure.

[0025] In some examples, the base 1 is provided with a slide rail, and the limiting slider 2 is slidably fitted in the slide rail; the bottom end of each clamping arm 3 is provided with a guide groove 31; the limiting slider 2 is provided with two guide pins 22, which are respectively housed in the guide grooves 31 of the two clamping arms 3; when the limiting slider 2 slides longitudinally, the movement of the guide pins 22 in the corresponding guide grooves 31 drives the two clamping arms 3 to rotate, thereby realizing the state switching.

[0026] In this embodiment, when the external object pushes the limiting slider 2 to move linearly along the slide, the guide pin 22 fixed on the slider rotates and moves within the guide groove 31 at the bottom of the clamping arm 3. Through the constraint of the groove wall, the longitudinal displacement of the pin is converted into a lateral thrust on the bottom of the clamping arm 3, and then converted into a radial clamping force at the top of the clamping arm 3 via the lever principle. This process is direct and efficient, ensuring the immediacy of the action and the effective transmission of force. Secondly, the symmetrically distributed guide grooves 31 force the two clamping arms 3 to move completely synchronously under the single drive of the slider, thereby ensuring that the clamping force is evenly distributed and automatically corrects the center of the object, avoiding off-center loading. At the same time, the entire transmission structure consists of only a few simple moving and rotating pairs, without complex electrical or hydraulic components, resulting in an extremely low failure rate and achieving long-term maintenance-free stable operation.

[0027] In some examples, a guide pin 22 can be set on each clamping arm 3, and a guide groove 31 can be set on the limiting slider 2. The clamping arm 3 can be driven to switch states when the limiting slider 2 moves longitudinally by the guide pin 22, the guide groove 31 and the lever principle.

[0028] Understandably, the limiting slider can be slidably connected to a longitudinal slide rail on the base to achieve sliding; alternatively, a through hole can be set on the base, and the limiting slider can be inserted into the through hole to achieve sliding through rigid friction.

[0029] In some examples, the limit slider 2 is T-shaped, including a slider body 21 and a guide pin 22 that are perpendicular to each other.

[0030] This embodiment provides a specific structure for a limiting slider 2, wherein the end of the guide pin 22 is provided with a threaded hole. When the guide pin 22 passes through the guide groove 31 of the clamping arm 3, the guide pin 22 can be limited to the guide groove 31 by a bolt 24 with a nut cross-section larger than the cross-section of the guide groove 31, thereby further improving the stability of the device structure.

[0031] In some examples, the slide has a rectangular cross-section, and the slider body 21 has a rectangular cross-section that matches the slide, so as to restrict the limit slider 2 from rotating around its axis.

[0032] This embodiment provides a specific structure of the slide and the slider body 21. The slide with a rectangular cross-section is designed to cooperate with the slider body 21, which effectively restricts the rotational freedom of the limiting slider 2 around its axis and prevents it from deflecting unexpectedly due to uneven force or external vibration. Secondly, this constraint significantly improves the rigidity, stability and durability of the entire transmission system and reduces the risk of additional wear and jamming caused by the rotation of the slider.

[0033] In some examples, other structures besides a rectangle whose cross-section of the slider body 21 matches the slide rail can also be used. For example, a slider body with a polygonal cross-section is also within the scope of protection of this application.

[0034] In some examples, the top of the limiting slider 2 is provided with a pressure plate 23, the area of ​​which is larger than the cross-sectional area of ​​the limiting slider 2; the pressure plate 23 is used to increase the contact area between the limiting slider 2 and the clamped external object.

[0035] In this embodiment, by adding a larger pressure plate 23 to the top of the limiting slider 2, the contact area with the clamped object is increased, making it easier to trigger the longitudinal movement of the slider smoothly and reliably. This improves the device's initial contact adaptability and trigger reliability for objects of different shapes. Furthermore, the larger pressure plate 23 can better withstand off-center or non-perpendicular loads, effectively dispersing lateral forces and preventing the slider from jamming due to uneven force distribution, thus ensuring the smoothness of the clamping action and the stability of the adaptive process.

[0036] In some examples, the inner gripping side of the clamping arm 3 is provided with a rough layer to increase the friction between the clamped objects.

[0037] In this embodiment, by adding a rough layer to the inner side of the clamping arm 3, the static friction between the clamping arm 3 and the surface of the clamped object is greatly improved, forming a more secure grip and effectively preventing the object from sliding or loosening due to vibration, impact or tilt during transportation, directly enhancing the clamping reliability under dynamic working conditions. Secondly, the rough layer enhances the adaptability of the device to different surface materials (such as smooth metallic paint, composite materials or shells with condensation), ensuring a consistent and sufficiently high coefficient of friction under various common working conditions, and also plays a certain role in buffering and protection, reducing the indentation or scratches that the hard clamping arm 3 may cause to the surface of the object.

[0038] In some examples, the elastic reset element 4 is a helical spring, the base 1 is provided with a first hanging point, the limiting slider 2 is provided with a second hanging point, and the two ends of the helical spring are respectively connected to the first hanging point and the second hanging point.

[0039] This embodiment provides a specific structure of the elastic reset component 4. The helical spring has a stable and controllable reset force. It has a simple structure, is easy to install, has high reliability, is not sensitive to ambient temperature and vibration, and has low maintenance costs.

[0040] In some examples, the clamping arm 3 is C-shaped; the unique bending structure of the C-shaped clamping arm 3 can cover the object with a larger arc, making the clamping force distribution more uniform and avoiding stress concentration. At the same time, the lever arm is optimized, and the displacement of the slider is efficiently converted into radial clamping force, enhancing the clamping efficiency and self-locking effect. In addition, this configuration provides stronger lateral support and bending and torsional stiffness, which can effectively resist off-center loading and swaying during transportation. The inward tendency of its arm end also forms a physical anti-disengagement barrier, further ensuring the clamping reliability and safety under complex dynamic working conditions.

[0041] In some examples, the base 1 is also provided with a cover plate 5, which is used to limit the horizontal displacement of the two clamping arms 3 and the limiting slider 2.

[0042] In this embodiment, screw holes are provided on the base 1, and through holes corresponding to the screw holes are provided on the cover plate 5. The cover plate 5 is fastened to the base 1 by screws 51, thereby constraining the horizontal displacement of the clamping arm 3 and the limiting slider 2. This effectively prevents the clamping arm 3 and the slider from shifting or shaking under dynamic load, ensuring the accuracy and stability of force transmission during clamping. It can suppress unexpected displacement of components, thereby maintaining clamping alignment and preventing the decrease in clamping force or accidental loosening caused by component misalignment. This further enhances the stability and long-term reliability of the purely mechanical clamping device under complex operating conditions.

[0043] Example 2 This embodiment also provides a transport vehicle for transporting artillery shells, including at least one adaptive clamping device as in Embodiment 1; Embodiment 2 has the advantages of Embodiment 1, which will not be described in detail here.

[0044] In the description of this invention, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are only used to complement the content disclosed in the specification, so as to enable those skilled in the art to understand and read them, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0046] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this invention to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes. Any component provided by this invention can be assembled from multiple individual components or can be a single component manufactured by a one-piece molding process.

[0047] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all changes falling within the meaning and scope of the equivalents of the claims be included within the present invention.

[0048] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An adaptive clamping device, characterized in that, include: Base; A limiting slider is slidably mounted on the base along the longitudinal direction; Two clamping arms are rotatably connected to the base to form a lever structure and are symmetrically arranged on both sides of the limiting slider. An opening for clamping an object to enter and exit is formed between the tops of the two clamping arms. The two clamping arms have an open state, a clamping state, and a clamping state. The bottom end of each clamping arm is movably connected to the limiting slider so that when the limiting slider moves longitudinally toward the opening, it can use the lever principle to drive the tops of the two clamping arms away from each other to the open state; when it moves longitudinally away from the opening, it can use the lever principle to drive the tops of the two clamping arms closer to each other to the clamping state. as well as An elastic reset member is connected between the base and the limiting slider. Under normal conditions, the elastic reset member drives the limiting slider to remain in a first position facing the opening, at which time the two clamping arms are in an open state. When the limiting slider is moved to a second position by a force acting away from the opening, the two clamping arms switch from the open state to the clamping state.

2. The adaptive clamping device according to claim 1, characterized in that, The base is provided with a slide rail, and the limiting slider is slidably engaged in the slide rail; each clamping arm has a guide groove at its bottom end; the limiting slider is provided with two guide pins, which are respectively housed in the guide grooves of the two clamping arms; when the limiting slider slides longitudinally, the movement of the guide pins in the corresponding guide grooves drives the two clamping arms to rotate, thereby realizing state switching.

3. The adaptive clamping device according to claim 2, characterized in that, The limiting slider is T-shaped and includes a slider body and a guide pin that are perpendicular to each other.

4. The adaptive clamping device according to claim 3, characterized in that, The slide has a rectangular cross-section, and the slider body has a rectangular cross-section that matches the slide, so as to restrict the limiting slider from rotating around its axis.

5. The adaptive clamping device according to claim 1, characterized in that, The top of the limiting slider is provided with a pressure plate, the area of ​​which is larger than the cross-sectional area of ​​the limiting slider; the pressure plate is used to increase the contact area between the limiting slider and the clamped external object.

6. The adaptive clamping device according to claim 1, characterized in that, The inner gripping side of the clamping arm is provided with a rough layer to increase the friction between the clamped objects.

7. The adaptive clamping device according to claim 1, characterized in that, The elastic reset component is a helical spring. The base is provided with a first hanging point, and the limiting slider is provided with a second hanging point. The two ends of the helical spring are respectively connected to the first hanging point and the second hanging point.

8. The adaptive clamping device according to claim 1, characterized in that, The clamping arm is C-shaped.

9. The adaptive clamping device according to claim 1, characterized in that, The base is also provided with a cover plate, which is used to limit the horizontal displacement of the two clamping arms and the limiting slider.

10. A transport vehicle, characterized in that, It includes at least one adaptive clamping device as described in any one of claims 1 to 9.

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