Multi-point supporting self-locking type lifting device

Abstract

The utility model discloses a multi-point supporting self-locking type lifting device. According to the device, the multiple supporting assemblies are used for supporting the supporting plate, the supporting plate is used for bearing and supporting lifted objects, and uniform and stable stress is guaranteed through multi-point supporting; a left-handed screw rod sliding block is arranged on the left-handed screw rod, and a right-handed screw rod sliding block is arranged on the right-handed screw rod; according to the device, the distance between a left-handed screw rod sliding block and a right-handed screw rod sliding block in each supporting assembly is adjusted through rotation of a screw rod, and lifting and descending of a supporting plate are achieved; the self-locking function of the sliding blocks and the screw rods is achieved through friction force and a connecting structure of the left-handed lead screw sliding blocks and the left-handed screw rods and friction force and a connecting structure of the right-handed lead screw sliding blocks and the right-handed screw rods, the screw rods in the multiple sets of supporting units are matched, and when operation of the hand-cranking tool is stopped, due to the synergistic effect of the multiple sets of screw rods, the screw rods can be driven to rotate, so that the hand-cranking tool is convenient to operate. And all the screws can offset the moving trend of any single screw together, so that an integral self-locking mechanism is formed.

Description

Technical Field

[0001] This utility model relates to the field of manual lifting device technology, and more specifically, to a multi-point supported self-locking lifting device. Background Technology

[0002] Currently, some products have special performance requirements, and their outer surfaces are often coated with elastic materials with low hardness. However, during assembly or transportation, these elastic materials may be damaged by uneven external pressure, compromising the soft structure. Product transportation requires a support platform to reduce space occupation, and assembly operations require lifting to a suitable height. This necessitates an integrated transportation and assembly platform for product maintenance and support. Existing lifting and support devices mostly use rod supports, resulting in a small contact area unsuitable for supporting soft materials. Furthermore, current lifting devices often employ hydraulic single-point support, but hydraulic lifting carries the risk of oil leakage and pressure loss, requiring frequent maintenance. Additionally, single-point hydraulic rod support on a large flat surface suffers from uneven and unstable force distribution.

[0003] Currently, existing lifting devices mostly use hydraulic single-point support for lifting, which not only suffers from uneven force and instability when supporting large flat surfaces, but also poses risks such as oil leakage and pressure relief. No effective solution has yet been proposed. Utility Model Content

[0004] This utility model provides a multi-point supported self-locking lifting device to solve the problem that existing lifting devices mostly use hydraulic single-point support for lifting, which not only has the defects of uneven force and instability when supporting large planes, but also has the risks of oil leakage and pressure relief.

[0005] To achieve the above objectives, this utility model provides a multi-point supported self-locking lifting device, which includes: a mounting plate for fixing multiple support units; each support unit includes multiple support components; each support component includes: a support base, including an upper support base and a lower support base, the lower support base being fixedly mounted on the mounting plate; a screw assembly, including a left-hand screw and a right-hand screw, the left-hand screw and the right-hand screw being connected by a first coupling; a left-hand lead screw slider is provided on the left-hand screw, and a right-hand lead screw slider is provided on the right-hand screw; the upper support base, the left-hand lead screw slider, the lower support base, and the right-hand lead screw slider are connected by a connecting rod; adjacent supports... The support components are fixedly connected; a transmission chain is used to drive the synchronous rotation of all screws mounted on the same side of multiple support units; a hand crank is connected to one of the screws mounted on one end of the transmission chain; when the hand crank is rotated clockwise, the distance between the left-hand lead screw slider and the right-hand helical lead screw slider in each support assembly is shortened by the rotation of the screw; when the hand crank is rotated counterclockwise, the distance between the left-hand lead screw slider and the right-hand helical lead screw slider in each support assembly is increased by the rotation of the screw; when the hand crank is stopped, the distance between the left-hand lead screw slider and the right-hand helical lead screw slider remains unchanged; a support plate is mounted on the upper support base for bearing and supporting the lifted item.

[0006] Optionally, the upper support, left-hand lead screw slider, lower support, right-hand lead screw slider, and upper support are sequentially connected by connecting rods to form a rhombus structure.

[0007] Optionally, the upper support, left-hand lead screw slider, lower support, right-hand lead screw slider and the connecting rod are connected by a pin.

[0008] Optionally, two adjacent support components are connected via a second coupling.

[0009] Optionally, in each support assembly, the distance between the left-hand lead screw slider and the first coupling is equal to the distance between the right-hand lead screw slider and the first coupling.

[0010] Optionally, at least two support units are provided; each support unit has at least two support components.

[0011] Optionally, the number of support components in each support unit is equal.

[0012] Optionally, the support base is made of a high-strength material.

[0013] Optionally, the left-hand screw and the left-hand lead screw slider are connected by a thread; the right-hand screw and the right-hand lead screw slider are connected by a thread.

[0014] Optionally, the support plate is an arc-shaped plate structure, and the support plate is an integral structure.

[0015] The beneficial effects of this utility model are:

[0016] This invention provides a multi-point support self-locking lifting device. The device uses multiple support components to support a support plate, which carries and supports the lifted item. Multi-point support ensures uniform and stable force distribution. The device adjusts the distance between the left-hand lead screw slider and the right-hand helical lead screw slider in each support component by rotating the screw, thus achieving the lifting and lowering of the support plate. Through the friction and connection structure between the left-hand lead screw slider and the left-hand screw, and the friction and connection structure between the right-hand lead screw slider and the right-hand screw, a self-locking function is achieved between the slider and the screw. Furthermore, the screws in the multiple support units cooperate, and when the hand-cranked tool operation stops, the synergistic effect of the multiple screws collectively counteracts the movement tendency of any single screw, thus forming an overall self-locking mechanism. Attached Figure Description

[0017] Figure 1 This is a front view of a multi-point supported self-locking lifting device provided in an embodiment of this utility model;

[0018] Figure 2 This is a perspective view of a multi-point supported self-locking lifting device provided in an embodiment of this utility model.

[0019] Symbol explanation:

[0020] Mounting plate-1, support base-2, left-hand screw-3, right-hand screw-4, first coupling-5, left-hand lead screw slider-6, right-hand lead screw slider-7, transmission chain-8, hand crank tool-9, support plate-10, connecting rod-11, pin-12, second coupling-13, upper support base-21, lower support base-22. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Figure 1 This is a front view of a multi-point supported self-locking lifting device provided in an embodiment of this utility model; Figure 2 This is a perspective view of a multi-point supported self-locking lifting device provided in an embodiment of this utility model. Figure 1 and Figure 2As shown, the device includes:

[0023] 1. Mounting plate 1, used to fix multiple support units;

[0024] In an optional embodiment, the mounting plate 1 can be configured as one, and multiple support units can be fixed on the mounting plate 1;

[0025] In another optional embodiment, multiple mounting plates 1 are provided, and each mounting plate 1 corresponds to a multiple support unit; that is, one support unit is fixed on each mounting plate 1.

[0026] The mounting plate 1 is used to place horizontally on the ground.

[0027] At least two support units are provided; in a specific embodiment of this utility model, two support units are provided, which are used to support the front and rear sides of the object respectively.

[0028] 2. The support unit includes multiple support components; each support component includes: a support base 2, including an upper support base 21 and a lower support base 22, the lower support base 22 being fixedly mounted on the mounting plate 1; a screw assembly, including a left-hand screw 3 and a right-hand screw 4, the left-hand screw 3 and the right-hand screw 4 being connected by a first coupling 5; a left-hand lead screw slider 6 is provided on the left-hand screw 3, and a right-hand lead screw slider 7 is provided on the right-hand screw 4; the upper support base 21, the left-hand lead screw slider 6, the lower support base 22, and the right-hand lead screw slider 7 are connected by a connecting rod 11; adjacent support components are fixedly connected;

[0029] In one optional embodiment, each support unit consists of multiple support components, with adjacent support components connected by a second coupling 13; each support unit has at least two support components; and the number of support components in each support unit is equal. In a specific embodiment of this utility model, two support units are provided, each support unit has two support components, and the two support components are connected by a second coupling 13.

[0030] Each support assembly includes: an upper support base 21, a lower support base 22, a left-hand screw 3, a right-hand screw 4, a left-hand lead screw slider 6, a right-hand lead screw slider 7, a first coupling 5, and a connecting rod 11;

[0031] The lower support 22 is fixedly mounted on the mounting plate 1; the left-hand lead screw slider 6 is disposed on the left-hand screw 3, and the left-hand screw 3 and the left-hand lead screw slider 6 are connected by threads; the right-hand lead screw slider 7 is disposed on the right-hand screw 4, and the right-hand screw 4 and the right-hand lead screw slider 7 are connected by threads; the left-hand screw 3 and the right-hand screw 4 are connected by a first coupling 5.

[0032] The upper support 21, the left-hand lead screw slider 6, the lower support 22, the right-hand lead screw slider 7, and the upper support 21 are sequentially connected by connecting rods 11 to form a rhombus structure. Specifically, one end of the upper support 21 is connected to the center of the left-hand lead screw slider 6 via connecting rod 11, the center of the left-hand lead screw slider 6 is connected to one end of the lower support 22 via connecting rod 11, the other end of the lower support 22 is connected to the center of the right-hand lead screw slider 7 via connecting rod 11, and the center of the right-hand lead screw slider 7 is connected to the other end of the upper support 21 via connecting rod 11.

[0033] Furthermore, the upper support 21, the left-hand lead screw slider 6, the lower support 22, the right-hand lead screw slider 7, and the connecting rod 11 are fixedly connected by a pin 12.

[0034] In each support assembly, the distance between the left-hand lead screw slider 6 and the first coupling 5 is equal to the distance between the right-hand lead screw slider 7 and the first coupling 5. This ensures that the upper support 21, the left-hand lead screw slider 6, the lower support 22, and the right-hand lead screw slider 7 can form a rhombus structure.

[0035] 3. Drive chain 8, used to drive the synchronous rotation of all screws mounted on the same side of multiple support units;

[0036] In a specific embodiment of this utility model, the transmission chain 8 is mounted on the left-hand screw 3 at the right end of the two support units (e.g., Figure 1 (As shown) Drives the synchronous rotation of all screws.

[0037] 4. The hand-cranked tool 9 is connected to one of the screws at one end of the transmission chain 8. When the hand-cranked tool 9 is rotated clockwise, the rotation of the screw shortens the distance between the left-hand lead screw slider 6 and the right-hand helical lead screw slider in each support assembly. When the hand-cranked tool 9 is rotated counterclockwise, the rotation of the screw increases the distance between the left-hand lead screw slider 6 and the right-hand helical lead screw slider in each support assembly. When the hand-cranked tool 9 is stopped, the distance between the left-hand lead screw slider 6 and the right-hand helical lead screw slider remains unchanged.

[0038] Specifically, the rotation direction of the screw is closely related to the movement direction of the slider. When the hand crank 9 is rotated clockwise, it means that both the left-hand screw 3 and the right-hand screw 4 rotate clockwise. For the left-hand screw slider 6 and the right-hand screw slider 7, clockwise rotation will cause them to move closer to the first coupling 5, respectively. Specifically: when the left-hand screw 3 rotates clockwise, the left-hand screw slider 6 will move towards the first coupling 5 on the left-hand screw 3; similarly, when the right-hand screw 4 rotates clockwise, the right-hand screw slider 7 will move towards the first coupling 5 on the right-hand screw 4.

[0039] As both the left-hand lead screw slider 6 and the right-hand lead screw slider 7 move toward the first coupling 5, the distance between them shortens. At this time, the vertical distance between the lower support 22 and the screw increases, and the vertical distance between the upper support 21 and the screw also increases accordingly. Consequently, the distance between the upper support 21 and the lower support 22 increases, and the device is lifted.

[0040] Conversely, when the hand crank 9 is rotated counterclockwise, the distance between the left-hand lead screw slider 6 and the right-hand lead screw slider increases, the distance between the upper support 21 and the lower support 22 decreases, and the device descends.

[0041] When the hand-cranked tool 9 stops rotating, the distance between the left-hand lead screw slider 6 and the right-hand lead screw slider remains unchanged, thus achieving a self-locking mechanism.

[0042] The self-locking mechanism is implemented in the following ways:

[0043] (1) Threaded connection design: By using a larger thread pitch or a steeper thread angle, when the external force is stopped, the left-hand lead screw slider 6 and the right-hand lead screw slider 7 will not move freely on the screw due to the presence of friction. Even if a load is applied to the left-hand lead screw slider 6 and the right-hand lead screw slider 7, it will not cause automatic rotation or slippage. This design ensures that the lifting device will not fall back on its own after the operation of the hand-cranked tool 9 is stopped, thus achieving self-locking.

[0044] (2) Multiple sets of left-hand lead screw sliders 6 and right-hand lead screw sliders 7 are precisely matched with their respective screws. When each set of screws rotates synchronously, each set of screws will be subjected to a uniform force. Due to the synergistic effect of multiple sets of screws, after the operation stops, the sliding of any set of screws will be restricted by the friction of other sets of screws, further preventing the device from sliding and realizing the self-locking function.

[0045] (3) The transmission chain 8 connects the screws on the same side of the two support units, making them rotate synchronously. When the hand-cranked tool 9 is stopped, due to the rigidity of the transmission chain 8, all the screws will jointly counteract the movement tendency of any single screw, thus forming an overall self-locking mechanism.

[0046] (4) The friction between the left-hand lead screw slider 6 and the right-hand lead screw slider 7 and the screw is also a key factor in self-locking. By precisely designing the coefficient of friction between the slider and the screw, the friction is sufficient to resist the sliding caused by the object's own weight or external force when manual operation stops.

[0047] 5. Support plate 10, installed on the upper support base 21, is used to carry and support the lifted items.

[0048] In an optional embodiment, the support base 2 is made of a high-strength material to ensure stable operation of the entire device under high load conditions.

[0049] The support plate 10 has an arc-shaped plate structure and is an integral structure.

[0050] The device of this invention is suitable for integrated transfer and assembly platforms, and can perform stable height adjustment without damaging the supported object. After lifting and lowering operations, the device can realize a self-locking mechanism to prevent slippage or accidental descent, thereby improving the safety of operation and the stability of the device.

[0051] The beneficial effects of this utility model are:

[0052] This invention provides a multi-point support self-locking lifting device. The device uses multiple support components to support a support plate 10, which is used to carry and support the lifted item. The multi-point support ensures uniform and stable force distribution. The device adjusts the distance between the left-hand screw slider 6 and the right-hand screw slider in each support component by rotating the screw, thereby realizing the lifting and lowering of the support plate 10. Through the friction and connection structure between the left-hand screw slider 6 and the left-hand screw 3, and the friction and connection structure between the right-hand screw slider 7 and the right-hand screw 4, the self-locking function of the slider and the screw is realized. Furthermore, the screws in the multiple support units cooperate with each other. When the operation of the hand-cranked tool 9 is stopped, due to the synergistic effect of the multiple screws, all screws will jointly counteract the movement tendency of any single screw, thus forming an overall self-locking mechanism.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-point supported self-locking lifting device, characterized in that, include: Mounting plate, used to fix multiple support units; The support unit includes multiple support components; Each support assembly includes: a support base, comprising an upper support base and a lower support base, the lower support base being fixedly mounted on the mounting plate; a screw assembly, comprising a left-hand screw and a right-hand screw, the left-hand screw and the right-hand screw being connected by a first coupling; a left-hand lead screw slider is provided on the left-hand screw, and a right-hand lead screw slider is provided on the right-hand screw; the upper support base, the left-hand lead screw slider, the lower support base, and the right-hand lead screw slider are connected by a connecting rod; adjacent support assemblies are fixedly connected. A drive chain is used to drive the synchronous rotation of all screws mounted on the same side of multiple support units; A hand-cranked tool is connected to one of the screws at one end of the drive chain. When the hand-cranked tool is rotated clockwise, the rotation of the screw shortens the distance between the left-hand lead screw slider and the right-hand helical lead screw slider in each support assembly. When the hand-cranked tool is rotated counterclockwise, the rotation of the screw increases the distance between the left-hand lead screw slider and the right-hand helical lead screw slider in each support assembly. When the hand-cranked tool is stopped, the distance between the left-hand lead screw slider and the right-hand helical lead screw slider remains unchanged. A support plate is installed on the upper support base to support and carry the lifted item.

2. The apparatus according to claim 1, characterized in that: The upper support, left-hand lead screw slider, lower support, right-hand lead screw slider, and upper support are sequentially connected by connecting rods to form a rhombus structure.

3. The apparatus according to claim 2, characterized in that: The upper support, left-hand lead screw slider, lower support, right-hand lead screw slider and the connecting rod are connected by pins.

4. The apparatus according to claim 1, characterized in that: Two adjacent support components are connected by a second coupling.

5. The apparatus according to claim 1, characterized in that: In each support assembly, the distance between the left-hand lead screw slider and the first coupling is equal to the distance between the right-hand lead screw slider and the first coupling.

6. The apparatus according to claim 1, characterized in that: The support unit is provided in at least two parts; each support unit is provided in at least two support components.

7. The apparatus according to claim 6, characterized in that: The number of support components in each support unit is equal.

8. The apparatus according to claim 1, characterized in that: The support base is made of high-strength material.

9. The apparatus according to claim 1, characterized in that: The left-hand screw is connected to the left-hand lead screw slider by a thread; the right-hand screw is connected to the right-hand lead screw slider by a thread.

10. The apparatus according to claim 1, characterized in that: The support plate is an arc-shaped plate structure and is an integral structure.

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