CN202625723U - Mechanical jack - Google Patents

Abstract

The utility model belongs to the field of jacks, and particularly relates to a mechanical jack. The mechanical jack comprises an ejector rod with threads at the lower end, and a pedestal. The mechanical jack further comprises an adjusting seat, wherein internal holes of the adjusting seat are connected with the threads at the lower end of the ejector rod; an external circle of the adjusting seat is connected with the internal holes of the pedestal by virtue of the threads; the adjusting seat is higher than the pedestal; and an exposed part of the external circle of the adjusting seat is fastened by virtue of a fastening nut. The mechanical jack provided by the utility model has the beneficial effects of being simple in structure, and safe in use, and has the capacity of adjusting the height of the jack in two stages; thus, the demands on commonly adjusting the jacking height and greatly adjusting the jacking height can be met.

Description

a mechanical jack

technical field

The utility model belongs to the field of jacks, in particular to a mechanical jack.

Background technique

Common mechanical jack is made up of a base and a threaded push rod at the lower end, and its jacking height is limited by the height of the push rod. When a larger adjustment is required due to the different shape of the workpiece, the adjustment of the ejector rod cannot meet the requirements at this time, and the only temporary measure to solve it is to place a pad iron under the base, which is very troublesome and likely to cause insufficient support at the bottom. stable, thereby inducing safety accidents.

Contents of the invention

The technical problem to be solved by the utility model is to provide a mechanical jack that can adjust the jacking height in a large range.

In order to solve the problems of the technologies described above, the technical solutions of the utility model are:

The utility model relates to a mechanical jack, which comprises an ejector rod and a base with threads at the lower end, and an adjustment seat, the inner hole of the adjustment seat is threadedly connected with the lower end of the ejector rod, and the outer circle of the adjustment seat is threaded with the inner hole of the base.

In the mechanical jack described above, the adjustment seat is higher than the base, and the exposed part of the outer circle of the adjustment seat is fastened by a fastening nut.

The outer circle of the fastening nut is knurled.

The beneficial effect of the utility model is that the structure is simple, the use is safe, and the height of the jack can be adjusted in two stages, which meets the general and large-scale adjustment requirements for the jacking height.

Description of drawings

The technical solution of the present utility model will be further specifically described below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a structural schematic diagram of a mechanical jack according to a new embodiment of the present invention.

Detailed ways

A kind of mechanical jack as shown in Fig. 1, comprises the ejector rod 1 with thread at the lower end, adjusting seat 2, fastening nut 3 and base 4, the inner hole of adjusting seat 2 is threadedly connected with the lower end of ejector rod 1, and adjusting seat 2 The outer circle of the base is threadedly connected with the inner hole of the base 4, the adjustment seat 2 is higher than the base 4, and the exposed part of the outer circle of the adjustment seat 2 is fastened by the fastening nut 3, and the outer circle of the fastening nut 3 is knurled.

Under normal circumstances, it is enough to only adjust the ejector rod 1. When a large adjustment is encountered, the fastening nut 3 can be loosened first, and the height of the adjustment seat 2 can be adjusted. After reaching the required height, the nut 3 can be tightened again. Finally, the ejector rod 1 can also be fine-tuned. The mechanical jack of this embodiment has a simple structure and is safe to use, and can adjust the height of the jack in two stages, which meets the general and large-scale adjustment requirements for the jacking height.

Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to preferred embodiments, those of ordinary skill in the art should understand that this utility model can be Any modification or equivalent replacement of the technical solution of the utility model without departing from the spirit and scope of the technical solution of the utility model shall be covered by the claims of the utility model.

Claims (3)

1. A mechanical jack, comprising a threaded push rod at the lower end and a base, characterized in that it also includes an adjustment seat, the inner hole of the adjustment seat is threadedly connected with the lower end of the push rod, and the outer circle of the adjustment seat It is threadedly connected with the inner hole of the base. 2. The mechanical jack according to claim 1, wherein the adjustment seat is higher than the base, and the exposed part of the outer circle of the adjustment seat is fastened by a fastening nut. 3. The mechanical jack according to claim 2, characterized in that, the outer circle of the fastening nut is knurled. the

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