Mechanical rescue top

Abstract

This invention discloses a mechanical rescue jack, comprising an outer tube, an inner tube, a screw, a support plate, and a base. The upper end of the inner tube is inserted into the interior of the outer tube, and the lower end of the inner tube extends out of the outer tube and connects to the base. The lower end of the screw is inserted into the interior of the inner tube and threadedly connected to it. A linkage rod is rotatably connected to the upper end of the outer tube, and the lower end of the linkage rod is connected to the upper end of the screw. The upper end of the linkage rod has a slot. One end of the support plate is connected to the outer tube. In this mechanical rescue jack, the height of the support plate can be arbitrarily adjusted on the outer tube via a movable sleeve and quickly locked using a ratchet mechanism, adapting to different lifting height requirements and expanding the applicability of the equipment. The purely mechanical transmission structure fundamentally avoids the safety risks caused by hydraulic system leakage; simultaneously, the double locking of the safety pin and ratchet mechanism effectively prevents the support plate from sliding, ensuring the stability and reliability of the lifting process.

Description

Technical Field

[0001] This invention belongs to the field of rescue tool technology, specifically relating to mechanical rescue jacks. Background Technology

[0002] In scenarios such as vehicle rescue, construction, and geological disaster relief, it is often necessary to lift overturned vehicles or collapsed structures. Currently, the most common lifting equipment on the market is the hydraulic jack. While it has the advantage of high lifting capacity, it poses significant safety hazards in complex rescue environments: if the hydraulic system experiences seal aging or oil pipe rupture, it can easily lead to a sudden pressure drop, causing the lifted object to suddenly fall, seriously threatening the lives of operators and trapped personnel. Furthermore, hydraulic jacks have strict limitations on their operating angle, are difficult to operate stably on inclined or uneven ground, and require high levels of maintenance.

[0003] In contrast, purely mechanically driven rescue jacks employ a screw and nut structure, using screw rotation to achieve lifting and lowering. This offers advantages such as high safety, no risk of hydraulic oil leakage, and self-locking capabilities, and is gradually gaining attention in the rescue field. However, existing mechanical rescue jacks still have shortcomings in practical applications: the support plate is usually fixed to the top of the outer tube, making it impossible to adjust its position according to the specific height of the object being lifted, resulting in poor adaptability; in complex outdoor terrain, it is difficult for the equipment to maintain constant perpendicularity to the ground, and the rigidly connected base can easily lead to uneven stress; the locking method of the support plate is limited, and accidental contact during lifting may cause it to loosen and slip, posing a safety hazard; simultaneously, the screw is directly exposed to the external environment, and the intrusion of dust and mud will accelerate thread wear, affecting transmission smoothness and equipment lifespan.

[0004] Therefore, it is necessary to optimize the structure of the mechanical rescue roof to improve its environmental adaptability, operational safety, and ease of use. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a mechanical rescue top, including an outer tube, an inner tube, a screw, a support plate, and a base. The upper end of the inner tube is inserted into the interior of the outer tube from the lower end of the outer tube, and the lower end of the inner tube extends out of the outer tube and is connected to the base. The lower end of the screw is inserted into the interior of the inner tube from the upper end of the inner tube and is threadedly connected to the inner tube. A linkage rod is rotatably connected to the upper end of the outer tube, and the lower end of the linkage rod is connected to the upper end of the screw. A groove is provided at the upper end of the linkage rod. One end of the support plate is connected to the outer tube.

[0006] As a preferred embodiment of the above technical solution, one end of the support plate is connected to a movable sleeve, which is fitted onto the outer tube. The movable sleeve is fixed on the outer tube by a ratchet mechanism, which includes several toothed grooves on the outer tube, a latch mounted on the movable sleeve, and a spring.

[0007] As a preferred embodiment of the above technical solution, the support plate and the movable sleeve are hinged by a horizontally set rotating shaft, the support plate is fixedly connected by a latch located below the rotating shaft, the spring is located above the rotating shaft, one end of the spring is fixedly connected to the movable sleeve, and the other end presses against the support plate. A limiting block is provided below the support plate, and the limiting block is fixedly connected to the movable sleeve.

[0008] As a preferred embodiment of the above technical solution, after the support plate contacts the limiting block, it is fixed to the movable sleeve by a safety pin. The support plate and the movable sleeve are respectively provided with pin holes for the safety pin to pass through, and the safety pin is connected to the movable sleeve by a fixing rope.

[0009] As a preferred embodiment of the above technical solution, the support plate is provided with several anti-slip grooves.

[0010] As a preferred embodiment of the above technical solution, the lower end of the inner tube is connected to the base via a universal joint.

[0011] As a preferred embodiment of the above technical solution, the lower end of the linkage rod is connected to the upper end of the screw through a planetary reduction gear set.

[0012] As a preferred embodiment of the above technical solution, the upper end of the screw is connected to a screw support seat.

[0013] As a preferred embodiment of the above technical solution, the upper end of the outer tube is connected to a waterproof and dustproof cap, the middle of which is provided with a through hole, and the lower end of the outer tube is connected to an inner tube support cap, the middle of which is provided with a central hole for the inner tube to extend out.

[0014] The beneficial effects of this invention are as follows: The height of the support plate of the mechanical rescue jack can be arbitrarily adjusted on the outer tube via a movable sleeve, and quickly locked using a ratchet mechanism, adapting to different lifting height requirements and expanding the applicability of the equipment. The purely mechanical transmission structure fundamentally avoids the safety risks caused by hydraulic system leakage; simultaneously, the double locking of the safety pin and ratchet mechanism effectively prevents the support plate from sliding, ensuring the stability and reliability of the lifting process. The lower end of the inner tube is connected to the base via a universal joint, allowing the equipment to maintain vertical force on inclined ground; the waterproof and dustproof cap design effectively prevents foreign object intrusion, extending the service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a physical image of the present invention. Detailed Implementation

[0016] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0017] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0019] like Figure 1-2 As shown, the mechanical rescue jack includes an outer tube 1, an inner tube 2, a screw 3, a support plate 4, and a base 5. The upper end of the inner tube 2 is inserted into the interior of the outer tube 1 from the lower end, and the lower end of the inner tube 2 extends out of the outer tube 1 and connects to the base 5. The lower end of the screw 3 is inserted into the interior of the inner tube 2 from the upper end and threadedly connected to the inner tube 2. A linkage rod 6 is rotatably connected to the upper end of the outer tube 1, and the lower end of the linkage rod 6 is connected to the upper end of the screw 3. The upper end of the linkage rod 6 has a slot 7. One end of the support plate 4 is connected to the outer tube 1. In use, the support plate 4 is placed under the object to be lifted (such as a vehicle), and a screwdriver or electric wrench is inserted into the slot 7. The linkage rod 6 drives the screw 3 to rotate. The rotation of the screw 3 extends out of or retracts into the inner tube 2, thereby causing the outer tube 1 to rise or fall, and the support plate 4 to rise or fall, thus lifting or lowering the object.

[0020] Furthermore, one end of the support plate 4 is connected to a movable sleeve 8, which is fitted onto the outer tube 1. The movable sleeve 8 is held in place on the outer tube 1 by a ratchet mechanism, which includes several toothed grooves 9 on the outer tube 1, a latch 10 mounted on the movable sleeve 8, and a spring 11. The height of the support plate 4 can be adjusted to adapt to different usage environments.

[0021] Furthermore, the support plate 4 and the movable sleeve 8 are hinged via a horizontally arranged pivot 12. A latch 10 is fixedly connected to the support plate 4, located below the pivot 12. A spring 11 is located above the pivot 12, with one end fixedly connected to the movable sleeve 8 and the other end pressing against the support plate 4. A limiting block 13 is provided below the support plate 4, and the limiting block 13 is fixedly connected to the movable sleeve 8. The cross-section of the slot 7 is shown in the attached instruction manual. Figure 1 As shown, gently lift the movable sleeve 8 and pry the support plate 4 upwards. The support plate 4 rotates within a certain angle range, the spring 11 is compressed, and the latch 10 moves and disengages from the toothed groove 9. This allows the movable sleeve 8 to move up and down, thus adjusting the height of the support plate 4. Releasing the support plate 4, under the restoring force of the spring 11 and the weight of the support plate 4, the support plate 4 rotates until it is stopped by the limiting block 13, and the latch 10 engages in the toothed groove 9. At this point, the movable sleeve 8 cannot move up or down, and the height of the support plate 4 is locked.

[0022] Furthermore, after the support plate 4 contacts the limiting block 13, it is fixed to the movable sleeve 8 by a safety pin 14. Both the support plate 4 and the movable sleeve 8 have pin holes 15 for the safety pin 14 to pass through. The safety pin 14 is connected to the movable sleeve 8 by a fixing rope. After the height of the support plate 4 is adjusted, the safety pin 14 is inserted into the pin hole 15, preventing the support plate 4 from rotating relative to the outer tube 1. The ratchet mechanism ensures the stability of the support plate 4, preventing it from sliding on the outer tube 1 and ensuring safety during the use of the mechanical rescue jack.

[0023] Furthermore, the support plate 4 is provided with a plurality of anti-slip grooves 16. The anti-slip grooves 16 increase the friction of the support plate 4 and prevent slippage.

[0024] Furthermore, the lower end of the inner tube 2 is connected to the base 5 via a universal joint 17. The universal joint 17 allows the inner tube 2 and the outer casing to be tilted at a certain angle as a whole, enabling the mechanical rescue top to adapt to complex environments.

[0025] Furthermore, the lower end of the linkage rod 6 is connected to the upper end of the screw 3 via a planetary reduction gear set 18. The planetary reduction gear set 18 controls the rotational speed of the screw 3, so when the linkage rod 6 is driven to rotate by an electric wrench, the rotational speed of the screw 3 can be effectively controlled, thereby controlling the lifting speed of the outer tube 1 and the support plate 4.

[0026] Furthermore, a screw support seat 19 is connected to the upper end of the screw 3. The screw support seat 19 ensures smooth rotation of the screw 3 without wobbling. The screw support seat 19 can be made of a bearing or a ring-shaped self-lubricating material.

[0027] Furthermore, a waterproof and dustproof cap 20 is connected to the upper end of the outer tube 1, and a through hole 21 is provided in the middle of the waterproof and dustproof cap 20. An inner tube support cap 22 is connected to the lower end of the outer tube 1, and a central hole 23 for the inner tube 2 to extend from the middle of the inner tube support cap 22. The waterproof and dustproof cap 20 prevents water and dust and other foreign objects from entering the interior of the outer tube 1, ensuring the normal operation of the planetary reduction gear set 18, screw 3, etc. The inner tube support cap 22 supports the inner tube 2 without affecting the movement of the outer tube 1. The inner side of the inner tube support cap 22 and the inner side of the waterproof and dustproof cap 20 are both provided with self-lubricating materials (such as copper-based self-lubricating materials, polytetrafluoroethylene-based self-lubricating materials, etc.) to improve lubricity.

[0028] It is worth mentioning that the planetary reduction gear set 18, universal joint 17 and other technical features involved in this patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial arrangement of these technical features can be adopted by conventional choices in the field, and should not be regarded as the inventive point of this patent. This patent will not be further elaborated in detail.

[0029] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experimentation on the basis of the prior art should be within the scope of protection defined by the claims.

Claims

1. A mechanical rescue roof, characterized in that, It includes an outer tube, an inner tube, a screw, a support plate, and a base. The upper end of the inner tube is inserted into the interior of the outer tube from the lower end, and the lower end of the inner tube extends out of the outer tube and is connected to the base. The lower end of the screw is inserted into the interior of the inner tube from the upper end and is threadedly connected to the inner tube. A linkage rod is rotatably connected to the upper end of the outer tube, and the lower end of the linkage rod is connected to the upper end of the screw. The upper end of the linkage rod is provided with a groove. One end of the support plate is connected to the outer tube.

2. The mechanical rescue roof as described in claim 1, characterized in that, One end of the support plate is connected to a movable sleeve, which is fitted onto the outer tube. The movable sleeve is fixed on the outer tube by a ratchet mechanism, which includes several toothed grooves on the outer tube, a latch and a spring mounted on the movable sleeve.

3. The mechanical rescue roof as described in claim 2, characterized in that, The support plate and the movable sleeve are hinged by a horizontally set rotating shaft. The support plate is fixedly connected by a latch, which is located below the rotating shaft. The spring is located above the rotating shaft. One end of the spring is fixedly connected to the movable sleeve, and the other end presses against the support plate. A limiting block is provided below the support plate, and the limiting block is fixedly connected to the movable sleeve.

4. The mechanical rescue roof as described in claim 3, characterized in that, After the support plate contacts the limiting block, it is fixed to the movable sleeve by a safety pin. The support plate and the movable sleeve are respectively provided with pin holes for the safety pin to pass through. The safety pin is connected to the movable sleeve by a fixing rope.

5. The mechanical rescue pylon as described in claim 1 or 4, characterized in that, The support plate is provided with several anti-slip grooves.

6. The mechanical rescue roof as described in claim 1, characterized in that, The lower end of the inner tube is connected to the base via a universal joint.

7. The mechanical rescue roof as described in claim 1, characterized in that, The lower end of the linkage rod is connected to the upper end of the screw through a planetary reduction gear set.

8. The mechanical rescue roof as described in claim 7, characterized in that, The upper end of the screw is connected to a screw support seat.

9. The mechanical rescue roof as described in claim 1, characterized in that, The upper end of the outer tube is connected to a waterproof and dustproof cap, and the middle of the waterproof and dustproof cap is provided with a through hole. The lower end of the outer tube is connected to an inner tube support cap, and the middle of the inner tube support cap is provided with a central hole for the inner tube to extend out.

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