A type of large-base jack

Abstract

This utility model discloses a large-base jack, relating to the field of mechanical engineering technology. The utility model includes a base plate; the jack body is installed inside the base plate, and a top seat is fixedly connected to the top of the jack body. Horizontal plates are symmetrically fixed to both sides of the outer wall of the base plate, and a U-shaped plate is fixedly connected to the upper surface of each of the two horizontal plates. A support assembly is rotatably mounted on the inner side of the U-shaped plate. This utility model, by adjusting the cooperation between the specific components of the assembly, allows the entire device to adapt to different working surfaces, preventing the jack from tipping over due to uneven ground. Simultaneously, the cooperation between the components of the support assembly provides "fall protection and load distribution" during the lifting process of the jack body, preventing deformation and damage to the jack body due to excessive local load, and extending the service life of the device.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical engineering technology, and in particular relates to a large-base jack. Background Technology

[0002] A jack is a small lifting device designed using the principle of mechanical levers. Its core function is to lift heavy objects to a specific height (usually a short stroke) with a small amount of force, and it is used in scenarios such as equipment maintenance, cargo loading and unloading, and construction.

[0003] Traditional scissor jacks, in practical use, have relatively small base areas and rely mainly on crossed scissor arms for support. During lifting heavy objects, if the center of gravity of the load is not precisely positioned above the jack's center, it is prone to tipping over or wobbling, especially on uneven surfaces where stability is difficult to guarantee. Furthermore, because the jack lacks load-distributing components, it is susceptible to localized heavy loads, leading to deformation and damage, potentially causing the load to fall and reducing its lifespan. Therefore, we offer a jack with a large base. Utility Model Content

[0004] The purpose of this utility model is to provide a large-base jack to solve the problems described in the background art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a large base jack, including a base plate; the jack body is installed inside the base plate, and a top seat is fixedly connected to the top of the jack body; horizontal plates are symmetrically fixed on both sides of the outer wall of the base plate; a U-shaped plate is fixedly connected to the upper surface of each of the two horizontal plates; a support component is rotatably arranged on the inner side of the U-shaped plate; and adjustment components are rotatably arranged on both sides of the inner wall of the base plate and the inner wall of the U-shaped plate.

[0006] The present invention is further configured such that the support assembly includes a sleeve rotatably inside the U-shaped plate, a rack is slidably disposed inside the sleeve, one end of the rack is rotatably connected to the second U-shaped plate, and the outer wall of the second U-shaped plate is fixedly connected to the bottom of the top seat.

[0007] The present invention is further configured such that the adjusting assembly includes a worm gear one rotatably connected to both sides of the inner wall of the base plate and a worm gear two rotatably connected to the inner wall of the U-shaped plate. One end of the worm gear one and the worm gear two respectively penetrate the outer wall of the base plate and the outer wall of the U-shaped plate. The outer walls of the worm gear one and the worm gear two are respectively meshed with worm wheels one and two. The worm wheels one and two rotate on the upper surface of the inner wall of the base plate and the U-shaped plate. A vertical rod is threadedly connected to the middle of the worm wheels one and the worm gear two. One end of the vertical rod penetrates the base plate and the U-shaped plate. A support block is fixedly connected to the end of each vertical rod.

[0008] The present invention is further configured such that a rotating shaft is rotatably connected inside the sleeve, a pawl for cooperating with a rack is fixedly connected to the outer wall of the rotating shaft, one end of the rotating shaft passes through the sleeve, and a drive source connected to one end of the rotating shaft is installed on the outer wall of the sleeve.

[0009] The present invention is further configured such that the driving source specifically refers to a servo motor.

[0010] The present invention is further configured such that a knob is fixedly connected to one end of both the first worm gear and the second worm gear.

[0011] This utility model has the following beneficial effects:

[0012] This invention, by adjusting the cooperation between the specific components of the assembly, enables the entire device to adapt to different working surfaces, preventing the jack from tipping over due to uneven ground. At the same time, the cooperation between the various components of the support assembly provides fall protection and load distribution during the lifting process of the jack body, preventing the jack body from deforming or being damaged due to excessive local load, and extending the service life of the overall device. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of a three-dimensional structure of a large-base jack.

[0015] Figure 2 For the present utility model Figure 1 Side view diagram.

[0016] Figure 3 For the present utility model Figure 1 Top view of the structure.

[0017] Figure 4 For the present utility model Figure 1 A. Enlarged schematic diagram of a local structure.

[0018] Figure 5 For the present utility model Figure 1 B. Enlarged schematic diagram of a local structure.

[0019] Figure 6 For the present utility model Figure 3 C. Enlarged schematic diagram of a local structure.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Base plate; 2. Jack body; 3. Horizontal plate; 4. U-shaped plate one; 5. Sleeve; 6. Rack; 7. Shaft; 8. Pawl; 9. Drive source; 10. Worm gear one; 11. Worm gear one; 12. Knob; 13. Vertical rod; 14. Support block; 15. Top seat; 16. U-shaped plate two; 17. Worm gear two; 18. Worm gear two. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-6 This utility model is a large base jack, including a base plate 1; the jack body 2 is installed inside the base plate 1, and a top seat 15 is fixedly connected to the top of the jack body 2; horizontal plates 3 are symmetrically fixed on both sides of the outer wall of the base plate 1; U-shaped plates 4 are fixedly connected to the upper surfaces of the two horizontal plates 3; a support component is rotatably provided on the inner side of the U-shaped plate 4; and adjustment components are rotatably provided on both sides of the inner wall of the base plate 1 and the inner wall of the U-shaped plate 4.

[0024] The base plate 1 provides support for the entire device. The jack body 2 installed inside is the core lifting power source. The top seat 15 on the top of the jack body 2 is used to contact the heavy object. By adjusting the cooperation between the specific components of the assembly, the entire device can adapt to different working surfaces, avoiding the jack from tipping over due to uneven ground. At the same time, the cooperation between the various components of the support assembly provides "fall protection and load distribution" for the jack body 2 during the lifting process, preventing the top seat 15 or the jack body 2 from deforming or being damaged due to excessive local load.

[0025] Please see Figures 1-4The support assembly includes a sleeve 5 that rotates inside the U-shaped plate 4. A rack 6 is slidably arranged inside the sleeve 5. A rotating shaft 7 is rotatably connected inside the sleeve 5. A pawl 8 that works with the rack 6 is fixedly connected to the outer wall of the rotating shaft 7. One end of the rotating shaft 7 passes through the sleeve 5. A drive source 9 connected to one end of the rotating shaft 7 is installed on the outer wall of the sleeve 5. The drive source 9 specifically refers to a servo motor. One end of the rack 6 is rotatably connected to the U-shaped plate 16. The outer wall of the U-shaped plate 16 is fixedly connected to the bottom of the top seat 15.

[0026] When the jack body 2 pushes the top seat 15 upward, the rack 6 slides out along the inner wall of the sleeve 5. The sleeve 5 rotates around the U-shaped plate 4 to maintain the inclined support of the top seat 15 and prevent the top seat 15 from shaking due to the eccentricity of the weight. When the jack body 2 descends, the rack 6 retracts into the sleeve 5. When the jack body 2 has finished lifting, the external power supply is connected to start the servo motor of the drive source 9. The drive source 9 drives the pawl 8 to rotate and engages with the teeth of the rack 6 in one direction to form a rigid lock. At this time, the jack body 2 cannot rise. When it needs to descend normally, the drive source 9 drives the pawl 8 to rotate in the opposite direction, disengage from the rack 6, and release the lock. The rack 6 can then freely retract into the sleeve 5, and the jack body 2 can descend freely.

[0027] Please see Figure 1 , Figure 5 and Figure 6 The adjustment assembly includes a worm gear 11 rotatably connected to both sides of the inner wall of the base plate 1 and a worm gear 2 18 rotatably connected to the inner wall of the U-shaped plate 4. One end of the worm gear 11 and the worm gear 2 18 respectively penetrates the outer wall of the base plate 1 and the U-shaped plate 4. The outer walls of the worm gear 11 and the worm gear 2 18 are respectively meshed with worm wheels 10 and 17. The worm wheels 10 and 17 rotate on the upper surface of the inner wall of the base plate 1 and the U-shaped plate 4. The middle of the worm wheels 10 and 17 are threaded with vertical rods 13. One end of the vertical rods 13 penetrates the base plate 1 and the U-shaped plate 4 respectively. The end of each vertical rod 13 is fixedly connected with a support block 14. One end of the worm gear 11 and the worm gear 2 18 is fixedly connected with a knob 12.

[0028] The manual rotation knob 12 is fixed to one end of worm gear 11 and worm gear 2 18, driving worm gear 11 and worm gear 2 18 to rotate. Worm gear 11 and worm gear 2 18 are respectively engaged with worm wheel 10 and worm wheel 2 17, converting the horizontal rotation of the worm gear into the vertical rotation of the worm wheel. The middle of worm wheel 10 and worm wheel 2 17 are threadedly connected to the vertical rod 13. When the worm wheel rotates, it drives the vertical rod 13 to rise and fall axially, driving the support block 14 at the end in contact with the ground to move synchronously, thus adapting to different working surfaces.

[0029] The operation process of this embodiment is as follows: The base plate 1 provides support for the entire device. The jack body 2 installed inside is the core lifting power source. The top seat 15 on the top of the jack body 2 is used to contact the heavy object. When the jack body 2 pushes the top seat 15 to rise, the rack 6 slides out along the inner wall of the sleeve 5. The sleeve 5 rotates around the U-shaped plate 4 to maintain the inclined support for the top seat 15 and prevent the top seat 15 from shaking due to the eccentricity of the heavy object. When the jack body 2 descends, the rack 6 retracts into the sleeve 5. When the jack body 2 has finished lifting, the external power supply is connected to start the servo motor of the drive source 9. The drive source 9 drives the pawl 8 to rotate, which meshes with the teeth of the rack 6 in one direction to form a rigid lock. At this time, the jack body 2 cannot move upwards. When the jack needs to be lowered normally, the drive source 9 drives the pawl 8 to rotate in the opposite direction, disengaging from the rack 6 and releasing the lock. The rack 6 can then freely retract into the sleeve 5, allowing the jack body 2 to descend freely. The knob 12, fixed to one end of the worm gear 11 and worm gear 2 18, is manually rotated, causing the worm gear 11 and worm gear 2 18 to rotate. The worm gear 11 and worm gear 2 18 are respectively engaged with the worm wheel 10 and worm wheel 2 17, converting the horizontal rotation of the worm gear into the vertical rotation of the worm wheel. The middle of the worm wheel 10 and worm wheel 2 17 are threadedly connected to the vertical rod 13. When the worm wheel rotates, it drives the vertical rod 13 to rise and fall axially, causing the support block 14, which is in contact with the ground at its end, to move synchronously, thus adapting to different working surfaces.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A large base jack comprising a base plate (1); characterized in that, The base plate (1) is equipped with a jack body (2) inside. The top of the jack body (2) is fixedly connected to a top seat (15). The outer walls of the base plate (1) are symmetrically fixed with horizontal plates (3). The upper surfaces of the two horizontal plates (3) are fixedly connected with U-shaped plates (4). The inner side of the U-shaped plates (4) is rotatably provided with a support component. The inner walls of the base plate (1) and the inner walls of the U-shaped plates (4) are rotatably provided with adjustment components.

2. A large base jack as claimed in claim 1, characterized in that The support assembly includes a sleeve (5) that rotates inside the U-shaped plate (4). A rack (6) is slidably arranged inside the sleeve (5). One end of the rack (6) is rotatably connected to a U-shaped plate (16). The outer wall of the U-shaped plate (16) is fixedly connected to the bottom of the top seat (15).

3. A large base jack as claimed in claim 1, characterized in that The adjustment assembly includes a worm gear 1 (11) rotatably connected to both sides of the inner wall of the base plate (1) and a worm gear 2 (18) rotatably connected to the inner wall of the U-shaped plate 1 (4). One end of the worm gear 1 (11) and the worm gear 2 (18) respectively penetrates the outer wall of the base plate (1) and the U-shaped plate 1 (4). The outer walls of the worm gear 1 (11) and the worm gear 2 (18) are respectively meshed with worm wheel 1 (10) and worm wheel 2 (17). The worm wheel 1 (10) and the worm wheel 2 (17) rotate on the upper surface of the inner wall of the base plate (1) and the U-shaped plate 1 (4). The middle part of the worm wheel 1 (10) and the worm wheel 2 (17) are threaded with a vertical rod (13). One end of the vertical rod (13) penetrates the base plate (1) and the U-shaped plate 1 (4). The end of each vertical rod (13) is fixedly connected with a support block (14).

4. A large base jack as claimed in claim 2, wherein, The sleeve (5) is rotatably connected to a rotating shaft (7), and the outer wall of the rotating shaft (7) is fixedly connected to a pawl (8) that works with a rack (6). One end of the rotating shaft (7) passes through the sleeve (5), and the outer wall of the sleeve (5) is equipped with a drive source (9) that is connected to one end of the rotating shaft (7).

5. A large base jack as claimed in claim 4, wherein, The driving source (9) specifically refers to a servo motor.

6. A large base jack as claimed in claim 3, wherein, A knob (12) is fixedly connected to one end of both the first worm (11) and the second worm (18).

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