CN218261742U - Jack - Google Patents

Abstract

The utility model discloses a jack, which comprises a tray seat hinged at the free end of a lifting arm of the jack and a tray arranged at the top of the tray seat, wherein the center of the tray is provided with an installation through hole; the center of the tray seat is provided with a pin shaft hole for penetrating the tray positioning pin, and the top end of the pin shaft hole extends upwards to form an annular flange exposed outside; the tray is arranged above the tray seat, and the annular flange is arranged in the mounting through hole in a penetrating manner; the top of tray locating pin is equipped with and blocks the platform, is equipped with annular clamping groove on the bottom outer peripheral face, and the tray locating pin is worn to locate in the round pin shaft hole, block the platform pressure and be in the installation through-hole top of tray, annular clamping groove fall in outside the round pin shaft hole, and be equipped with the retaining ring in the annular clamping groove. The utility model has the advantages that: when assembling the tray on the tray seat, only need with specialized tool with the retaining ring embolia in the draw-in groove of tray locating pin can, do not basically have the various problems that above structure exists, connect more firmly.

Description

Jack

Technical Field

The utility model relates to a jack.

Background

The jack is a light and small lifting device for lifting a heavy object in a stroke through a top tray, and is widely used in mechanical maintenance work, but the installation and connection modes of the tray and the tray seat of the existing jack on the market are basically that threads are processed on the tray seat, and the tray is installed on the tray seat through a tray screw with threads. The problems of poor verticality, tooth decay of threads, thread collision, uneven powder spraying thickness and the like easily occur during the thread machining of the tray seat, so that the quality problems of unsmooth assembly of tray screws, even insecure connection of the tray screws and the like are caused.

Disclosure of Invention

In order to solve the problem, the utility model provides a simple to operate, firm in connection's jack.

A jack, including articulating the tray seat that rises the arm free end at jack and setting up the tray at tray seat top, its characterized in that: the center of the tray is provided with a mounting through hole; a pin shaft hole for penetrating the tray positioning pin is formed in the center of the tray seat, and the top end of the pin shaft hole extends upwards to form an annular flange exposed outside; the tray is arranged above the tray seat, and the annular flange penetrates through the mounting through hole; the top of tray locating pin is equipped with and blocks the platform, is equipped with annular clamping groove on the bottom outer peripheral face, the tray locating pin wears to locate in the round pin shaft hole, it presses to block the platform the installation through-hole top of tray, annular clamping groove fall outside the round pin shaft hole, and be equipped with the retaining ring in the annular clamping groove.

Preferably, the top of the tray is provided with an annular groove surrounding the mounting through hole, and the inner edge of the annular groove is connected with the top end of the mounting through hole.

Preferably, the mounting through hole is a vertical through hole.

Preferably, a supporting surface for supporting the tray is arranged at the top of the tray seat.

During the installation, insert the cyclic annular flange of tray seat in the installation through-hole of tray, make the tray support on the holding surface of tray seat, then insert the tray locating pin from the top down in proper order in the installation through-hole of tray and the round pin shaft hole of tray seat, the platform that blocks of tray locating pin is pressed in the ring channel of tray, the ring channel of tray locating pin bottom falls outside round pin shaft hole, at last with the retaining ring suit in ring channel, make the tray locating pin can not deviate from in the round pin shaft hole of tray seat, thereby realize the firm connection between tray and the tray seat.

The utility model has the advantages that: when assembling the tray on the tray seat, only need with specialized tool with the retaining ring embolia in the draw-in groove of tray locating pin can, do not basically have the various problems that above structure exists, connect more firmly.

Drawings

Fig. 1 is a structural view of the present invention.

Fig. 2 is a structural view of the tray of the present invention.

Fig. 3 is a structural view of the tray seat of the present invention.

Fig. 4 is a structural diagram of the pallet positioning pin of the present invention.

Fig. 5 is a schematic view of the installation of the retainer ring of the present invention.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

The invention will be described in detail below with reference to exemplary embodiments and with reference to the accompanying drawings.

The jack comprises a tray seat 1 hinged at the free end of a lifting arm of the jack and a tray 2 arranged at the top of the tray seat 1, wherein the center of the tray 2 is provided with an installation through hole 21; a pin shaft hole 11 for penetrating the tray positioning pin 3 is formed in the center of the tray seat 1, and the top end of the pin shaft hole 11 extends upwards to form an annular flange 12 exposed to the outside; the tray 2 is arranged above the tray seat 1, and the annular flange 12 is arranged in the mounting through hole 21 in a penetrating manner; the top of tray locating pin 3 is equipped with and blocks platform 31, is equipped with annular clamping groove 32 on the bottom outer peripheral face, tray locating pin 3 wears to locate in the round pin shaft hole 11, it presses to block platform 31 the installation through-hole 21 top of tray 2, annular clamping groove 32 fall outside round pin shaft hole 11, and be equipped with retaining ring 4 among the annular clamping groove 32.

In some embodiments of the present invention, the top of the tray 2 is provided with an annular groove 22 surrounding the mounting through hole, and the inner edge of the annular groove 22 is connected to the top end of the mounting through hole 21 to form a step.

In some embodiments of the present invention, the installation through hole 21 is a vertical through hole, and two ends of the installation through hole 21 communicate with the top and the bottom of the tray respectively. The inner diameter of the mounting through-hole 21 is slightly larger than the outer diameter of the pin-shaft hole 11.

In some embodiments of the present invention, the bottom end of the pin shaft hole 11 is processed to form a fillet, so as to prevent the surface of the retainer ring from being damaged.

In some embodiments of the present invention, the top of the tray seat 1 is provided with a supporting surface for supporting the tray.

In some embodiments of the present invention, the tray positioning pin 3 includes a cylindrical section and a limiting table 31 disposed at the top of the cylindrical section, the cylindrical section is coaxially connected to the limiting table by one piece, and an annular clamping groove 32 is disposed on the outer circumference of the bottom of the cylindrical section. The outer diameter of the limiting table is slightly smaller than the inner diameter of the annular groove, so that the limiting table is partially accommodated in the annular groove 22, and positioning is facilitated. The outer diameter of the cylindrical section is slightly smaller than the inner diameter of the pin shaft hole.

The utility model discloses an in some embodiments, ring groove 32 with the length of the cylinder section between the spacing platform 31 slightly is greater than the axial depth in round pin shaft hole, retaining ring 4 suit is in when in the ring groove 32 of tray locating pin 3, at least the outer fringe of retaining ring 4 is contradicted the bottom in round pin shaft hole, because the external diameter of retaining ring is greater than the internal diameter in round pin shaft hole can prevent the tray locating pin is followed deviate from in the round pin shaft hole.

During the installation, insert the cyclic annular flange 12 of tray seat 1 in the installation through-hole 21 of tray, make tray 2 support on the holding surface of tray seat 1, then insert tray locating pin 3 from the top down in proper order in the installation through-hole 21 of tray 2 and the round pin shaft hole 11 of tray seat 1, the platform 31 that blocks of tray locating pin 3 presses in the ring channel 22 of tray 1, the cyclic annular draw-in groove 32 of tray locating pin 3 bottom falls outside round pin shaft hole 11, last suit is in cyclic annular draw-in groove 32 with retaining ring 4, make tray locating pin 3 can not deviate from the round pin shaft hole 11 of tray seat 1, thereby realize the firm connection between tray 2 and the tray seat 1.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (4)

1. The utility model provides a jack, is in including articulating the tray seat that rises arm free end at jack and setting the tray at tray seat top, its characterized in that: the center of the tray is provided with an installation through hole; the center of the tray seat is provided with a pin shaft hole for penetrating the tray positioning pin, and the top end of the pin shaft hole extends upwards to form an annular flange exposed outside; the tray is arranged above the tray seat, and the annular flange penetrates through the mounting through hole; the top of tray locating pin is equipped with and blocks the platform, is equipped with annular clamping groove on the bottom outer peripheral face, the tray locating pin wears to locate in the round pin shaft hole, it presses to block the platform the installation through-hole top of tray, annular clamping groove fall outside the round pin shaft hole, and be equipped with the retaining ring in the annular clamping groove.

2. A lifting jack as claimed in claim 1 wherein: the top of tray is equipped with the ring channel that encircles the installation through-hole, just the interior edge of ring channel with the top of installation through-hole meets.

3. A lifting jack as claimed in claim 2 in which: the mounting through holes are vertical through holes.

4. A lifting jack as claimed in claim 3 wherein: the top of the tray seat is provided with a supporting surface for supporting the tray.

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