Portable double-tooth scissor jack

Abstract

The utility model discloses a portable double-tooth scissor jack, and relates to the technical field of portable jacks. The device comprises a base, rotating frames which are symmetrically distributed are rotationally installed on the outer surface of the base, anti-inclination assemblies are arranged on the rotating frames, anti-disengagement assemblies are arranged on the base, each anti-inclination assembly comprises a supporting box and a U-shaped block, the U-shaped blocks are located above the supporting boxes, and the U-shaped blocks are located above the supporting boxes. The bottom end of the supporting box is rotationally installed at the top end of the rotating frame. A rotating frame is rotated to drive a supporting box and a straight rod to rotate, a first limiting block is pushed to drive a sliding block to move, the bottom end of a conical block is aligned with a rectangular groove, a longitudinal threaded rod is rotated to drive the conical block to move downwards, the conical block drives a second limiting block to move towards the two sides, and the second limiting block drives a supporting block to be clamped into a rectangular hole. In this way, a lateral supporting force can be obtained after the jack is supported, toppling is prevented, and the stability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of portable jacks, in particular to a portable double-tooth scissor-type jack. Background Art

[0002] Double-tooth scissor jack is a common mechanical jack and a common lifting equipment. Double-tooth scissor jack is mainly used for lifting and supporting small cars. Because of its light and fast characteristics, it is very popular among car drivers. It consists of two scissor-shaped support arms and achieves the lifting effect through friction and lever principle.

[0003] However, most of the existing double-tooth scissor jacks are prone to tipping over during use due to the small bottom area and lack of sufficient lateral support, which poses a safety hazard. To address the above problems, the inventors have proposed a convenient double-tooth scissor jack to solve the above problems. Utility Model Content

[0004] In order to solve the problem that the jack's bottom area is small, resulting in lack of lateral support, easy tilting and causing danger; the purpose of the utility model is to provide a convenient double-tooth scissor-type jack.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a portable double-tooth scissor jack, comprising a base, a symmetrically distributed rotating frame is rotatably mounted on the outer surface of the base, an anti-tilt component is arranged on the rotating frame, and an anti-separation component is arranged on the base;

[0006] The anti-tilt assembly comprises a support box and a U-shaped block, the U-shaped block is located above the support box, the bottom end of the support box is rotatably mounted on the top of the rotating frame, a straight rod is movably inserted into the support box, and one end of the straight rod away from the support box is rotatably mounted inside the U-shaped block, the outer surface of the support box is provided with a plurality of symmetrically distributed rectangular holes, the upper surface of the support box is provided with a first limit groove, a longitudinal threaded rod slides through the first limit groove for sliding movement, the bottom end of the longitudinal threaded rod is fixedly connected to a conical block, the upper surface of the support box is slidably provided with a first limit block, one end of the longitudinal threaded rod threads through the first limit block, the upper surface of the support box is provided with a symmetrically distributed L-shaped slide groove, the internal sliding card of the L-shaped slide groove is provided with a slider, the top of the slider is fixedly connected to the bottom end of the first limit block, the bottom end of the straight rod is provided with a rectangular groove, and the inside of the rectangular groove is fixedly provided with a symmetrically distributed second limit block The second limit block is fixedly provided with a support block on the side opposite to the second limit block, and the support block movably passes through the rectangular hole. A spring distributed in a rectangular shape is fixedly provided on the side opposite to the second limit block, and one end of the spring away from the second limit block is fixedly connected to the inner wall of the rectangular groove. The U-shaped block connected by the universal joint makes it more convenient for the rotating frame to rotate, and the rotating frame drives the support box and the straight rod to rotate. When the double-tooth scissor jack rises to a certain height, the first limit block is pushed by hand, and the first limit block drives the slider to move so that the bottom end of the conical block is aligned with the rectangular groove. The slider can prevent the first limit block from falling, and the longitudinal threaded rod is rotated so that the longitudinal threaded rod drives the conical block to move downward, so that the conical block drives the second limit block to move to both sides, and the second limit block drives the support block to move, so that the support block is stuck in the rectangular hole. In this way, the jack can obtain a lateral support force after being propped up, thereby preventing tipping, improving safety, and also improving the stability of the device.

[0007] Preferably, the anti-separation component includes a top plate, the bottom end of the top plate is fixedly connected to the top end of the U-shaped block, a rotating shaft is rotatably installed inside the top plate, one end of the rotating shaft movably penetrates the top plate, a fixing groove is provided inside the top plate, a first bevel gear is rotatably installed on the inner wall of the fixing groove, one end of the first bevel gear is fixedly connected to one end of the rotating shaft, a symmetrically distributed second bevel gear is meshed on the outer side of the first bevel gear, the second bevel gear is rotatably installed on the inner wall of the fixing groove, a symmetrically distributed second limiting groove is provided on the upper surface of the top plate, a first threaded rod is rotatably installed inside the second limiting groove, a moving block is slidably clamped inside the second limiting groove, one end of the first threaded rod threadedly penetrates the moving block, a fixing frame is fixedly connected to the top end of the moving block, and a rubber block distributed in a rectangular array is fixedly provided on the opposite side of the fixing frame, the rotating shaft drives the first bevel gear to rotate by rotating the rotating shaft, the first bevel gear drives the second bevel gear to rotate, so that the second bevel gear drives the first threaded rod to rotate, so that the first threaded rod drives the moving block to move, and the moving block drives the fixing frame to move, so that the support spacing can be adjusted to prevent the top plate from separating from the supporting part of the automobile.

[0008] Preferably, the top of the base is rotatably connected to a symmetrically distributed lower support arm, the end of the lower support arm away from the base is rotatably connected to a fixed block, the top of the fixed block is rotatably connected to an upper support arm, the end of the upper support arm away from the fixed block is rotatably connected to the bottom end of the top plate, and a second threaded rod is rotatably installed inside the fixed block, the two ends of the second threaded rod respectively movably penetrate the two fixed blocks, and one end of the second threaded rod is threadedly penetrated through one of the fixed blocks, and the fixed blocks are driven to move toward each other by rotating the second threaded rod, thereby rotating the upper support arm and the lower support arm to make the top plate move up for support.

[0009] Preferably, a rotating rod is movably inserted into the outer surface of the longitudinal threaded rod, and the rotating rod allows personnel to more conveniently rotate the longitudinal threaded rod.

[0010] Preferably, a plug rod is fixedly provided at one end of the rotating frame away from the second motor, and a fork block is fixedly provided at one end of the base away from the second motor. The fork block can better fix the plug rod, so that the outer side of the rotating frame can fit more stably with the outer side of the base.

[0011] Preferably, a symmetrically distributed baffle is fixedly provided on the outer surface of the base, one side of the baffle is in contact with the outer side of the rotating frame, and the baffle can make it more convenient to place one end of the rotating frame vertically for more stable support.

[0012] Preferably, a first motor is fixedly mounted on the outer surface of the top plate, and an end of an output shaft of the first motor is fixedly connected to an end of the rotating shaft away from the first bevel gear, so that the first motor can provide power for the rotation of the rotating shaft.

[0013] Preferably, a second motor is fixedly mounted on the outer surface of the fixing block, and an end of an output shaft of the second motor is fixedly connected to one end of a second threaded rod, so that the second motor can provide power for the rotation of the second threaded rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The support box and the straight rod are driven to rotate by rotating the rotating frame, and the first limit block is pushed to drive the slider to move, so that the bottom end of the conical block is aligned with the rectangular groove. The conical block is driven to move downward by rotating the longitudinal threaded rod, so that the conical block drives the second limit block to move to both sides, and the second limit block drives the support block to be stuck in the rectangular hole. In this way, the jack can obtain a lateral support force after being propped up, thereby preventing tipping and improving the stability of the device;

[0016] 2. By rotating the shaft, the shaft drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the first threaded rod to rotate, the first threaded rod drives the moving block to move, and the moving block drives the fixed frame to move, so that the support spacing can be adjusted to prevent the top plate from being separated from the car support part. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the structure of the utility model.

[0020] Figure 3 It is a schematic cross-sectional view of the structural support box of the utility model.

[0021] Figure 4 It is a schematic cross-sectional view of the top plate of the structure of the utility model.

[0022] In the figure: 1, base; 11, baffle; 12, rotating frame; 13, lower support arm; 14, upper support arm; 2, anti-tilt assembly; 21, support box; 211, rectangular hole; 22, straight rod; 221, rectangular groove; 23, first limit groove; 24, L-shaped slide; 241, slider; 25, first limit block; 251, longitudinal threaded rod; 252, tapered block; 26, second limit block; 261, support block; 27, Spring; 28. rotating rod; 29. ​​U-shaped block; 3. anti-separation assembly; 31. top plate; 32. second limiting groove; 321. moving block; 33. fixing frame; 331. rubber block; 34. first threaded rod; 35. fixing groove; 36. first bevel gear; 361. second bevel gear; 37. rotating shaft; 38. first motor; 4. fixing block; 41. second threaded rod; 42. second motor; 5. fork block; 51. plug rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example: Figure 1-4 As shown, the utility model provides a technical solution: a portable double-tooth scissor jack, comprising a base 1, a symmetrically distributed rotating frame 12 is rotatably mounted on the outer surface of the base 1, an anti-tilt component 2 is arranged on the rotating frame 12, and an anti-separation component 3 is arranged on the base 1;

[0025] The anti-tilt assembly 2 includes a support box 21 and a U-shaped block 29. The U-shaped block 29 is located above the support box 21. The bottom end of the support box 21 is rotatably mounted on the top of the rotating frame 12. A straight rod 22 is movably inserted inside the support box 21. One end of the straight rod 22 away from the support box 21 is rotatably mounted inside the U-shaped block 29. The outer surface of the support box 21 is provided with a plurality of symmetrically distributed rectangular holes 211. The upper surface of the support box 21 is provided with a first limiting groove 23. A longitudinal threaded rod 251 is slidably penetrated inside the first limiting groove 23. The longitudinal threaded rod 251 is The bottom end is fixedly connected with a conical block 252, the upper surface of the support box 21 is slidably provided with a first limit block 25, one end of the longitudinal threaded rod 251 is threadedly penetrated through the first limit block 25, the upper surface of the support box 21 is provided with symmetrically distributed L-shaped grooves 24, the inner sliding card of the L-shaped groove 24 is provided with a slider 241, the top of the slider 241 is fixedly connected with the bottom end of the first limit block 25, the bottom end of the straight rod 22 is provided with a rectangular groove 221, the inner part of the rectangular groove 221 is fixedly provided with a symmetrically distributed second limit block 26, and the second limit block 26 is opposite to each other. A support block 261 is fixedly provided on one side, and the support block 261 movably penetrates the rectangular hole 211. A spring 27 with a rectangular distribution is fixedly provided on the opposite side of the second limit block 26. One end of the spring 27 away from the second limit block 26 is fixedly connected to the inner wall of the rectangular groove 221. The U-shaped block 29 connected by the universal joint makes it easier for the rotating frame 12 to rotate. The rotating frame 12 drives the support box 21 and the straight rod 22 to rotate. When the double-tooth scissor jack rises to a certain height, the first limit block 25 is pushed by hand, and the first limit block 25 drives the slider 241 to move , so that the bottom end of the conical block 252 is aligned with the rectangular groove 221, the slider 241 can prevent the first limit block 25 from falling, and the longitudinal threaded rod 251 is rotated so that the longitudinal threaded rod 251 drives the conical block 252 to move downward, so that the conical block 252 drives the second limit block 26 to move to both sides, and the second limit block 26 drives the support block 261 to move, so that the support block 261 is stuck in the rectangular hole 211. In this way, the jack can obtain a lateral support force after being propped up, thereby preventing tipping, improving safety, and also improving the stability of the device.

[0026] The anti-separation component 3 includes a top plate 31, the bottom end of the top plate 31 is fixedly connected to the top end of the U-shaped block 29, a rotating shaft 37 is rotatably installed inside the top plate 31, one end of the rotating shaft 37 movably penetrates the top plate 31, a fixing groove 35 is provided inside the top plate 31, a first bevel gear 36 is rotatably installed on the inner wall of the fixing groove 35, one end of the first bevel gear 36 is fixedly connected to one end of the rotating shaft 37, a symmetrically distributed second bevel gear 361 is meshed on the outer side of the first bevel gear 36, and the second bevel gear 361 is rotatably installed on the inner wall of the fixing groove 35, a symmetrically distributed second limiting groove 32 is provided on the upper surface of the top plate 31, a first threaded rod 34 is rotatably installed inside the second limiting groove 32, a moving block 321 is slidably clamped inside the second limiting groove 32, one end of the first threaded rod 34 threadedly penetrates the moving block 321, a fixing frame 33 is fixedly connected to the top end of the moving block 321, and a rubber block 331 distributed in a rectangular array is fixedly provided on the opposite side of the fixing frame 33.

[0027] By adopting the above technical solution, by rotating the rotating shaft 37, the rotating shaft 37 drives the first bevel gear 36 to rotate, and the first bevel gear 36 drives the second bevel gear 361 to rotate, so that the second bevel gear 361 drives the first threaded rod 34 to rotate, so that the first threaded rod 34 drives the moving block 321 to move, and the moving block 321 drives the fixing frame 33 to move, so that the support spacing can be adjusted to prevent the top plate 31 from being separated from the supporting part of the automobile.

[0028] The top of the base 1 is rotatably connected to a symmetrically distributed lower support arm 13, the end of the lower support arm 13 away from the base 1 is rotatably connected to a fixed block 4, the top of the fixed block 4 is rotatably connected to an upper support arm 14, the end of the upper support arm 14 away from the fixed block 4 is rotatably connected to the bottom of the top plate 31, and a second threaded rod 41 is rotatably installed inside the fixed block 4, the two ends of the second threaded rod 41 respectively movably penetrate the two fixed blocks 4, and one end of the second threaded rod 41 is threadedly penetrated through one of the fixed blocks 4.

[0029] By adopting the above technical solution, the second threaded rod 41 is rotated to drive the fixing block 4 to move toward each other, thereby causing the upper support arm 14 and the lower support arm 13 to rotate so that the top plate 31 moves upward for support.

[0030] A rotating rod 28 is movably inserted into the outer surface of the longitudinal threaded rod 251 .

[0031] By adopting the above technical solution, the longitudinal threaded rod 251 can be rotated more conveniently by rotating the rod 28 .

[0032] An insertion rod 51 is fixedly provided at one end of the rotating frame 12 which is away from the second motor 42 , and a fork block 5 is fixedly provided at one end of the base 1 which is away from the second motor 42 .

[0033] By adopting the above technical solution, the insertion rod 51 can be better fixed by the fork block 5, so that the outer side of the rotating frame 12 can be more stably fitted with the outer side of the base 1.

[0034] Symmetrically distributed baffles 11 are fixedly disposed on the outer surface of the base 1 , and one side of the baffle 11 is in contact with the outer side of the rotating frame 12 .

[0035] By adopting the above technical solution, one end of the rotating frame 12 can be more conveniently placed vertically through the baffle 11, so as to facilitate more stable support.

[0036] A first motor 38 is fixedly mounted on the outer surface of the top plate 31 , and an end of an output shaft of the first motor 38 is fixedly connected to an end of the rotating shaft 37 away from the first bevel gear 36 .

[0037] By adopting the above technical solution, the first motor 38 can provide power for the rotation of the rotating shaft 37 .

[0038] A second motor 42 is fixedly mounted on the outer surface of the fixing block 4 , and an end of an output shaft of the second motor 42 is fixedly connected to one end of the second threaded rod 41 .

[0039] By adopting the above technical solution, the second motor 42 can provide power for the second threaded rod 41 to rotate.

[0040] Working principle: first place the double-tooth scissor jack at the work site, then rotate the rotating frame 12, the baffle 11 can ensure that the rotating frame 12 is perpendicular to the base 1, and then start the second motor 42, so that the second motor 42 starts to work, and the end of the output shaft of the second motor 42 drives the second threaded rod 41 to rotate, and the second threaded rod 41 drives the fixed block 4 to move in both directions, thereby rotating the upper support arm 14 and the lower support arm 13 to move the top plate 31 upward for support. At this time, the top plate 31 drives the straight rod 22 to extend from the support box 21, and after it is lifted to a suitable height , push the first limit block 25 by hand, the first limit block 25 drives the slider 241 to move, so that the bottom end of the cone block 252 is aligned with the rectangular groove 221, the slider 241 can prevent the first limit block 25 from falling, rotate the longitudinal threaded rod 251, so that the longitudinal threaded rod 251 drives the cone block 252 to move downward, so that the cone block 252 drives the second limit block 26 to move to both sides, and the second limit block 26 drives the support block 261 to move, so that the support block 261 is stuck in the rectangular hole 211, so that the jack can be supported to obtain a The lateral support force is provided to prevent tipping, thereby improving safety and also improving the stability of the device. Then the first motor 38 is started, so that the first motor 38 starts, the end of the output shaft of the first motor 38 drives the rotating shaft 37 to rotate, the rotating shaft 37 drives the first bevel gear 36 to rotate, the first bevel gear 36 drives the second bevel gear 361 to rotate, so that the second bevel gear 361 drives the first threaded rod 34 to rotate, so that the first threaded rod 34 drives the moving block 321 to move, and the moving block 321 drives the fixing frame 33 to move, so that the support interval can be adjusted. The distance is prevented from the top plate 31 being separated from the supporting part of the automobile. After the double-tooth scissor jack is used, the longitudinal threaded rod 251 is driven to rotate by reversing the rotating rod 28, and the second limit block 26 is reset by the elastic force generated when the spring 27 is compressed. Then the first motor 38 and the second motor 42 are reversed to reset the fixing frame 33 and the fixing block 4. Then the rotating frame 12 is reversed to make the outer side of the rotating frame 12 fit with the outer side of the base 1, so that the insertion rod 51 is stuck in the fork block 5, so that one side of the rotating frame 12 is more stably fitted with the outer side of the base 1.

[0041] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A portable double-tooth scissor jack, comprising a base (1), characterized in that: A symmetrically distributed rotating frame (12) is rotatably mounted on the outer surface of the base (1); an anti-tilt component (2) is provided on the rotating frame (12); and an anti-separation component (3) is provided on the base (1); The anti-tilt assembly (2) comprises a support box (21) and a U-shaped block (29), wherein the U-shaped block (29) is located above the support box (21), the bottom end of the support box (21) is rotatably mounted on the top end of the rotating frame (12), a straight rod (22) is movably inserted inside the support box (21), one end of the straight rod (22) away from the support box (21) is rotatably mounted inside the U-shaped block (29), a plurality of symmetrically distributed rectangular holes (211) are provided on the outer surface of the support box (21), a first limiting groove (23) is provided on the upper surface of the support box (21), a longitudinal threaded rod (251) is slidably penetrated inside the first limiting groove (23), the bottom end of the longitudinal threaded rod (251) is fixedly connected to a conical block (252), a first limiting block (25) is slidably provided on the upper surface of the support box (21), and the longitudinal threaded rod (251) is slidably mounted inside the U-shaped block (29), and the first limiting block (25) is slidably mounted on the upper surface of the support box (21). 51) is threadedly inserted through the first limit block (25), the upper surface of the support box (21) is provided with symmetrically distributed L-shaped grooves (24), the internal sliding card of the L-shaped groove (24) is provided with a slider (241), the top of the slider (241) is fixedly connected to the bottom end of the first limit block (25), the bottom end of the straight rod (22) is provided with a rectangular groove (221), the inside of the rectangular groove (221) is fixedly provided with a symmetrically distributed second limit block (26), the opposite side of the second limit block (26) is fixedly provided with a support block (261), the support block (261) movably passes through the rectangular hole (211), the opposite side of the second limit block (26) is fixedly provided with a spring (27) distributed in a rectangular shape, and the end of the spring (27) away from the second limit block (26) is fixedly connected to the inner wall of the rectangular groove (221).

2. A portable double-tooth scissor jack as claimed in claim 1, characterized in that: The anti-separation component (3) comprises a top plate (31), the bottom end of the top plate (31) is fixedly connected to the top end of the U-shaped block (29), a rotating shaft (37) is rotatably mounted inside the top plate (31), one end of the rotating shaft (37) movably passes through the top plate (31), a fixing groove (35) is provided inside the top plate (31), a first bevel gear (36) is rotatably mounted on the inner wall of the fixing groove (35), one end of the first bevel gear (36) is fixedly connected to one end of the rotating shaft (37), and the outer side of the first bevel gear (36) is meshed with symmetrically distributed second bevel gears (361), The second bevel gear (361) is rotatably mounted on the inner wall of the fixing groove (35); the upper surface of the top plate (31) is provided with symmetrically distributed second limiting grooves (32); a first threaded rod (34) is rotatably mounted inside the second limiting groove (32); a moving block (321) is slidably mounted inside the second limiting groove (32); one end of the first threaded rod (34) is threadedly inserted through the moving block (321); a top end of the moving block (321) is fixedly connected to a fixing frame (33); and a rubber block (331) distributed in a rectangular array is fixedly disposed on an opposite side of the fixing frame (33).

3. A portable double-tooth scissor jack as claimed in claim 1, characterized in that: The top of the base (1) is rotatably connected to a symmetrically distributed lower support arm (13); one end of the lower support arm (13) away from the base (1) is rotatably connected to a fixed block (4); the top of the fixed block (4) is rotatably connected to an upper support arm (14); one end of the upper support arm (14) away from the fixed block (4) is rotatably connected to the bottom end of the top plate (31); a second threaded rod (41) is rotatably mounted inside the fixed block (4); two ends of the second threaded rod (41) respectively movably penetrate two fixed blocks (4); and one end of the second threaded rod (41) is threadedly penetrated through one of the fixed blocks (4).

4. A portable double-tooth scissor jack as claimed in claim 2, characterized in that: A rotating rod (28) is movably inserted into the outer surface of the longitudinal threaded rod (251).

5. A portable double-tooth scissor jack as claimed in claim 1, characterized in that: An insertion rod (51) is fixedly provided at one end of the rotating frame (12) that is away from the second motor (42), and a fork block (5) is fixedly provided at one end of the base (1) that is away from the second motor (42).

6. A portable double-tooth scissor jack as claimed in claim 1, characterized in that: The outer surface of the base (1) is fixedly provided with symmetrically distributed baffles (11), and one side of the baffles (11) is in contact with the outer side of the rotating frame (12).

7. A portable double-tooth scissor jack as claimed in claim 2, characterized in that: A first motor (38) is fixedly mounted on the outer surface of the top plate (31), and an end of an output shaft of the first motor (38) is fixedly connected to an end of the rotating shaft (37) away from the first bevel gear (36).

8. A portable double-tooth scissor jack as claimed in claim 3, characterized in that: A second motor (42) is fixedly mounted on the outer surface of the fixing block (4), and an end of an output shaft of the second motor (42) is fixedly connected to one end of a second threaded rod (41).

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