Multifunctional push-pull jack

Abstract

The utility model discloses a multifunctional push-pull jack. Comprising a first lower supporting arm, a second lower supporting arm, a bottom base, self-locking universal wheels, a telescopic supporting plate, a top bearing platform, a first upper supporting arm, a second upper supporting arm, a first positioning pin shaft, a forward nut, a second positioning pin shaft, a reverse nut, a double-tooth screw, a forward threaded section, a reverse threaded section and a rotating hand wheel. The jack can be conveniently dragged on the ground through the self-locking universal wheels installed at the bottoms of the first lower supporting arm and the second lower supporting arm, the situation that the jack is unstably supported due to accidental sliding of the self-locking universal wheels is avoided, and the supporting stability of the jack is improved; the forward thread section and the reverse thread section at the two ends of the double-thread screw are matched with the forward nut and the reverse nut with the two ends engaged to conduct screwing advancing and retreating at the two ends at the same time, the lifting speed is high, screw screwing advancing and retreating operation can be conveniently conducted through the rotating hand wheel installed at the left end of the double-thread screw, and operation is easy and saves labor.

Description

[Technical field]

[0001] The utility model relates to the technical field of jacks, in particular to the technical field of multifunctional push-pull jacks. [Background technology]

[0002] A jack is a small lifting device with a small lifting height but high efficiency. The jack is mainly used for vehicle repair and other lifting and supporting work. It is lightweight, flexible and reliable, and can be carried and operated by one person. It is a widely used manual tool. There are many types and quantities of jacks currently used in the market. According to different manufacturing principles, they are divided into hydraulic jacks and mechanical jacks, but the functions are relatively simple, mostly lifting functions. It is necessary to improve the existing jacks to enrich their functions. [Utility Model Content]

[0003] The purpose of the utility model is to solve the problems in the prior art and propose a multifunctional push-pull jack, which can facilitate the dragging of the jack on the ground through the self-locking universal wheels installed at the bottom of the first lower support arm and the second lower support arm, and at the same time, the self-locking universal wheels are driven to rise and disengage from the ground when the first lower support arm and the second lower support arm are raised to support, so as to avoid accidental sliding of the self-locking universal wheels and unstable support of the jack, and the bottom support area of ​​the jack is increased by the telescopic support plates symmetrically arranged on the front and rear sides of the bottom base, thereby improving the support stability of the jack, and the forward threaded sections and reverse threaded sections at both ends of the double-thread screw are matched with the forward nuts and reverse nuts engaged at both ends to simultaneously screw forward and backward at the same time, and the lifting speed is fast, and the rotating handwheel installed at the left end of the double-thread screw is convenient for the screwing forward and backward operation, and the operation is simple and labor-saving.

[0004] To achieve the above-mentioned purpose, the utility model proposes a multifunctional push-pull jack, including a first lower support arm, a second lower support arm, a bottom base, a self-locking universal wheel, a telescopic support plate, a top support platform, a first upper support arm, a second upper support arm, a first positioning pin shaft, a forward nut, a second positioning pin shaft, a reverse nut, a double-thread screw, a forward threaded section, a reverse threaded section and a rotating handwheel, the bottom ends of the first lower support arm and the second lower support arm are connected to the bottom base through a rotating pin shaft, the bottoms of the first lower support arm and the second lower support arm are both equipped with self-locking universal wheels, telescopic support plates are symmetrically arranged on the front and rear sides of the bottom base, a top support platform is arranged directly above the bottom base, and the bottom of the top support platform The first and second upper support arms are connected with the first upper support arm through a rotating pin shaft, the bottom end of the first upper support arm is connected with the top end of the first lower support arm through a first positioning pin shaft, a forward nut is fixedly inserted in the first positioning pin shaft, the bottom end of the second upper support arm is connected with the top end of the second lower support arm through a second positioning pin shaft, a reverse nut is fixedly inserted in the second positioning pin shaft, a double-thread screw is engaged with the internal thread of the reverse nut, the left and right ends of the double-thread screw are respectively provided with a forward thread section and a reverse thread section, the reverse thread section is engaged with the reverse nut thread, the forward thread section is engaged with the forward nut thread, and a rotating handwheel is installed at the left end of the double-thread screw.

[0005] Preferably, a rubber buffer pad is fixedly adhered to the top of the top support platform, and a plurality of anti-slip protrusions are evenly distributed on the top of the rubber buffer pad.

[0006] Preferably, a plurality of telescopic levers are evenly and radially arranged on the circumferential edge of the rotating hand wheel.

[0007] Preferably, the first lower support arm and the second lower support arm have the same structural size, and the first upper support arm and the second upper support arm have the same structural size.

[0008] Preferably, the bottom surface of the bottom base is provided with an anti-slip layer.

[0009] The beneficial effects of the utility model: the utility model combines the first lower support arm, the second lower support arm, the bottom base, the self-locking universal wheel, the telescopic support plate, the top support platform, the first upper support arm, the second upper support arm, the first positioning pin shaft, the forward nut, the second positioning pin shaft, the reverse nut, the double-thread screw, the forward thread section, the reverse thread section and the rotating hand wheel together, and after experimental optimization, the self-locking universal wheel installed at the bottom of the first lower support arm and the second lower support arm can facilitate the jack to be dragged on the ground. When the support arm is raised to support, it drives the self-locking universal wheel to rise and break away from the ground, avoiding accidental sliding of the self-locking universal wheel and causing unstable support of the jack. The bottom support area of ​​the jack is increased by the telescopic support plates symmetrically arranged on the front and rear sides of the bottom base, thereby improving the support stability of the jack. The forward threaded sections and reverse threaded sections at both ends of the double-thread screw cooperate with the forward nuts and reverse nuts at both ends to simultaneously screw forward and backward, with a fast lifting speed. The rotating handwheel installed on the left end of the double-thread screw is convenient for screwing the screw forward and backward, and the operation is simple and labor-saving.

[0010] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0011] Figure 1 The utility model is a structural schematic diagram of a multifunctional push-pull jack.

[0012] In the figure: 1-first lower support arm, 2-second lower support arm, 3-bottom base, 4-self-locking universal wheel, 5-telescopic support plate, 6-top support platform, 7-first upper support arm, 8-second upper support arm, 9-first positioning pin, 10-forward nut, 11-second positioning pin, 12-reverse nut, 13-double-thread screw, 14-forward thread segment, 15-reverse thread segment, 16-rotating handwheel. [Specific implementation method]

[0013] See also Figure 1The utility model multifunctional push-pull jack comprises a first lower support arm 1, a second lower support arm 2, a bottom base 3, a self-locking universal wheel 4, a telescopic support plate 5, a top support platform 6, a first upper support arm 7, a second upper support arm 8, a first positioning pin shaft 9, a forward nut 10, a second positioning pin shaft 11, a reverse nut 12, a double-thread screw 13, a forward threaded section 14, a reverse threaded section 15 and a rotating hand wheel 16. The bottom ends of the first lower support arm 1 and the second lower support arm 2 are connected to the bottom base 3 through a rotating pin shaft, and the bottoms of the first lower support arm 1 and the second lower support arm 2 are both installed with self-locking universal wheels 4. Telescopic support plates 5 are symmetrically arranged on the front and rear sides of the bottom base 3. A top support platform 6 is arranged directly above the bottom base 3. The bottom of the top support platform 6 is connected to the first upper support arm 7 and the second upper support arm 8 through a rotating pin shaft. The bottom end of the first upper support arm 7 is connected to the top of the first lower support arm 1 through the first positioning pin shaft 9. The first positioning pin shaft 9 is fixedly inserted inside A forward nut 10 is provided, and the bottom end of the second upper support arm 8 is connected to the top end of the second lower support arm 2 through a second positioning pin shaft 11, and a reverse nut 12 is fixedly inserted in the second positioning pin shaft 11, and a double-thread screw 13 is provided with an internal thread engagement of the reverse nut 12, and a forward thread segment 14 and a reverse thread segment 15 are respectively provided at the left and right ends of the double-thread screw 13, and the reverse thread segment 15 is threadedly engaged with the reverse nut 12, and the forward thread segment 14 is threadedly engaged with the forward nut 10, and a rotating hand wheel 16 is installed at the left end of the double-thread screw 13, and a rubber buffer pad is fixedly adhered to the top of the top support platform 6, and a plurality of anti-skid protrusions are evenly distributed on the top of the rubber buffer pad, and a plurality of telescopic levers are evenly radially arranged on the circumferential edge of the rotating hand wheel 16, the first lower support arm 1 and the second lower support arm 2 have the same structure and size, the first upper support arm 7 and the second upper support arm 8 have the same structure and size, and an anti-skid layer is provided on the bottom surface of the bottom base 3.

[0014] The utility model combines the first lower support arm 1, the second lower support arm 2, the bottom base 3, the self-locking universal wheel 4, the telescopic support plate 5, the top support platform 6, the first upper support arm 7, the second upper support arm 8, the first positioning pin shaft 9, the forward nut 10, the second positioning pin shaft 11, the reverse nut 12, the double-thread screw 13, the forward thread section 14, the reverse thread section 15 and the rotating hand wheel 16 together, and after experimental optimization, it is possible to facilitate the jack to be dragged on the ground through the self-locking universal wheel 4 installed at the bottom of the first lower support arm 1 and the second lower support arm 2, and at the same time, the first lower support arm 1 and the second lower support arm 2 are 2 When the support is raised, the self-locking universal wheel 4 is driven to rise and break away from the ground, so as to avoid accidental sliding of the self-locking universal wheel 4 and causing unstable support of the jack. The bottom support area of ​​the jack is increased by the telescopic support plates 5 symmetrically arranged on the front and rear sides of the bottom base 3, thereby improving the support stability of the jack. The forward threaded sections 14 and the reverse threaded sections 15 at both ends of the double-thread screw 13 cooperate with the forward nuts 10 and the reverse nuts 12 engaged at both ends to simultaneously screw forward and backward at the same time, and the lifting and lowering speed is fast. The rotating hand wheel 16 installed at the left end of the double-thread screw 13 is convenient for the screw screwing forward and backward operation, and the operation is simple and labor-saving.

[0015] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. Multifunctional push-pull jack, characterized by: The invention comprises a first lower support arm (1), a second lower support arm (2), a bottom base (3), a self-locking universal wheel (4), a telescopic support plate (5), a top support platform (6), a first upper support arm (7), a second upper support arm (8), a first positioning pin shaft (9), a forward nut (10), a second positioning pin shaft (11), a reverse nut (12), a double-thread screw (13), a forward threaded section (14), a reverse threaded section (15) and a rotating hand wheel (16), wherein the bottom ends of the first lower support arm (1) and the second lower support arm (2) are connected to the bottom base (3) through a rotating pin shaft, and the bottoms of the first lower support arm (1) and the second lower support arm (2) are both equipped with self-locking universal wheels (4), and telescopic support plates (5) are symmetrically arranged on the front and rear sides of the bottom base (3), and a top support platform (6) is arranged directly above the bottom base (3), and the bottom of the top support platform (6) is connected to the first lower support arm (1) and the second lower support arm (2) through a rotating pin shaft. An upper support arm (7) and a second upper support arm (8), wherein the bottom end of the first upper support arm (7) is connected to the top end of the first lower support arm (1) via a first positioning pin shaft (9), a forward nut (10) is fixedly inserted in the first positioning pin shaft (9), the bottom end of the second upper support arm (8) is connected to the top end of the second lower support arm (2) via a second positioning pin shaft (11), a reverse nut (12) is fixedly inserted in the second positioning pin shaft (11), a double-thread screw (13) is provided in the reverse nut (12) in thread engagement, the left and right ends of the double-thread screw (13) are respectively provided with a forward thread section (14) and a reverse thread section (15), the reverse thread section (15) is threadedly engaged with the reverse nut (12), the forward thread section (14) is threadedly engaged with the forward nut (10), and a rotating hand wheel (16) is installed at the left end of the double-thread screw (13).

2. The multifunctional push-pull jack according to claim 1, characterized in that: A rubber buffer pad is fixedly adhered to the top of the top support platform (6), and a plurality of anti-slip protrusions are evenly distributed on the top of the rubber buffer pad.

3. The multifunctional push-pull jack according to claim 1, characterized in that: A plurality of telescopic levers are evenly and radially arranged on the circumferential edge of the rotating hand wheel (16).

4. The multifunctional push-pull jack according to claim 1, characterized in that: The first lower support arm (1) and the second lower support arm (2) have the same structural size, and the first upper support arm (7) and the second upper support arm (8) have the same structural size.

5. The multifunctional push-pull jack according to claim 1, characterized in that: The bottom surface of the bottom base (3) is provided with an anti-slip layer.

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