CN203006830U - Mechanical jack - Google Patents

Abstract

The utility model discloses a mechanical jack which comprises a top support, a base, a first hinged shaft, a second hinged shaft, a nut sleeve, a lead screw, a lead screw seat, a first support rod, a second support rod, a third support rod and a fourth rod, wherein one end of the first support rod and one end of the second support rod are hinged with the top support, one end of the third support rod and one end of the fourth support rod are hinged with the base, the other end of the first support rod is hinged with the other end of the third support rod through the first hinged shaft, the other end of the second support rod is hinged with the other end of the fourth support rod through the second hinged shaft, a through hole is formed in the first hinged shaft, the nut sleeve is arranged inside the through hole, one end of the lead screw is fixedly connected with the lead screw seat, the other end of the lead screw penetrates through the second hinged shaft and is connected with the nut sleeve in a threaded mode, a locating screw hole is formed in the lead screw seat, and a locating bolt penetrates into the locating screw hole to fix the lead screw. According to the mechanical jack, the inner extensible type nut sleeve is arranged, the lead screw can be machined to be short, the size of the jack after the jack is folded is reduced, convenience is brought to storage, the locating bolt fixes the lead screw, and the mechanical jack is safe to use.

Description

mechanical jack

technical field

The utility model relates to a jack, in particular to a mechanical jack.

Background technique

The jack is a commonly used support expansion tool in daily life and some disaster relief (such as car accidents, earthquakes, landslides, etc.). At present, most of the mechanical jacks we use in our daily life are scissor jacks. Because there is no nut sleeve, the screw rod is too long. Especially when used with a car, it increases the occupied area of the car interior and is not easy to store; generally, the screw rod is not fixed, so there is a certain potential safety hazard.

Utility model content

Aiming at the above-mentioned problems in the prior art, the utility model provides a mechanical jack.

In order to achieve the above object, the technical solution adopted by the utility model is: a mechanical jack, including a top bracket and a base, and also includes a first hinged shaft, a second hinged shaft, a nut sleeve, a screw rod, a screw rod seat, one end and the top The first support rod and the second support rod hinged by the bracket, the third support rod and the fourth support rod whose one end is hinged with the base, wherein, the other end of the first support rod and the other end of the third support rod pass through the first The hinge shaft is hinged, and the other end of the second support rod and the other end of the fourth support rod are hinged through the second hinge shaft. A through hole is provided on the first hinge shaft, and a nut sleeve is arranged in the through hole. One end is fixedly connected to the screw seat, and the other end of the screw rod passes through the second hinge shaft and is threadedly connected with the nut sleeve; there is a positioning screw hole on the screw seat, and the positioning bolt penetrates into the positioning screw hole to fix the screw rod, which is relatively easy to use. Safety.

Compared with the prior art, the utility model has the advantages of: the inner extension type nut cover is set, so that the length of the screw rod can be made shorter, the volume of the jack after folding is reduced, and the storage is more convenient; the screw rod seat is provided with The positioning screw hole, the positioning bolt penetrates the positioning screw hole to fix the screw rod, which is safer to use.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure: 1. top bracket; 2. base; 3. first hinge shaft; 4. second hinge shaft; 5. nut sleeve; 6. screw rod; 7. screw rod base; 8. first support rod; 1, the second support rod; 10, the third support rod; 11, the fourth support rod; 12, the positioning screw hole; 13, the positioning bolt.

Detailed ways

The utility model will be further described below in conjunction with accompanying drawing.

As an embodiment of the present utility model, referring to Fig. 1, the utility model comprises a top bracket 1, a base 2, a first hinge shaft 3, a second hinge shaft 4, a nut sleeve 5, a screw rod 6, a screw rod seat 7, One end of the first support rod 8 and the second support rod 9 hinged with the top bracket 1, one end of the third support rod 10 and the fourth support rod 11 hinged with the base 2, wherein the other end of the first support rod 8 and the third The other end of the support rod 10 is hinged by the first hinge shaft 3, the other end of the second support rod 9 and the other end of the fourth support rod 11 are hinged by the second hinge shaft 4, and a through hole is provided on the first hinge shaft 3. Nut sleeve 5 is set in the through hole, and one end of screw mandrel 6 is fixedly connected with screw mandrel seat 7, and the other end of screw mandrel 6 passes second hinge shaft 4, and is threadedly connected with nut sleeve 5; Screw hole 12, positioning bolt 13 penetrates positioning screw hole 12 and fixes screw mandrel 6, and it is safer to use. The nut sleeve 5 is an inner extension nut sleeve, which can effectively shorten the length of the leading screw 6 .

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model . Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (1)

1. A mechanical jack, comprising a top bracket and a base, is characterized in that: it also includes a first hinged shaft, a second hinged shaft, a nut sleeve, a screw mandrel, a screw rod seat, a first support rod hinged with the top bracket at one end and The second support rod, the third support rod and the fourth support rod with one end hinged to the base, wherein, the other end of the first support rod and the other end of the third support rod are hinged through the first hinge shaft, and the second support rod The other end of the support rod and the other end of the fourth support rod are hinged through the second hinge shaft, and a through hole is opened on the first hinge shaft, and a nut sleeve is arranged in the through hole, and one end of the screw rod is fixedly connected to the screw rod seat, and the screw rod The other end of the rod passes through the second hinge shaft and is threadedly connected with the nut sleeve; the screw seat is provided with a positioning screw hole, and the positioning bolt penetrates into the positioning screw hole to fix the screw rod.

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