CN219585732U - Self-lubricating vertical jack - Google Patents

Abstract

The utility model relates to a self-lubricating vertical jack which comprises a base, wherein the base is connected with a shell and an oil return valve, oil is stored in the shell, a cylinder body is arranged in the shell, a limit sleeve and a piston rod are arranged in the cylinder body, the outer wall of the limit sleeve is mutually abutted with the inner wall of the cylinder body, the piston rod penetrates through the limit sleeve and extends into the cylinder body, the piston rod, the limit sleeve and the cylinder body are mutually matched to form a closed cavity for the piston rod to move along the vertical direction, and an oil storage cavity is arranged above the limit sleeve and is used for filling lubricating oil. The utility model has the following advantages and effects: through setting up the stock solution chamber, the lubricated fluid in the stock solution intracavity can be along with the removal of piston rod along vertical direction, forms the lubricating oil film in the piston rod periphery to this reduces the wearing and tearing that produce because of the friction between piston rod lift and the cylinder body inner wall, thereby can prolong holistic life, be favorable to long-term use.

Description

Self-lubricating vertical jack

Technical Field

The utility model relates to the technical field of jacks, in particular to a self-lubricating vertical jack.

Background

The jack is a lifting device, is commonly used for lifting heavy loads, and is widely used in various fields of mechanical industry. The vertical jack is one type of jack, and is widely used because of the characteristics of simple operation, safety, reliability, labor saving and the like.

For example, the chinese patent document with publication number CN204474241U filed by this company before discloses a pneumatic vertical piston air pressure recovery air passage, which comprises an oil tank, a hydraulic cylinder accommodated in the oil tank, a limit ring installed in the hydraulic cylinder, a piston rod and an air pipe assembly, wherein the piston rod passes through the limit ring and then extends into the hydraulic cylinder, and the piston rod, the limit ring and the hydraulic cylinder are matched to form a closed rod cavity; the hydraulic cylinder is provided with an oil cylinder through hole communicated with the rod cavity; the oil tank is provided with an oil tank through hole, one end of the air pipe assembly is connected with the oil cylinder through hole, and the other end of the air pipe assembly is connected with the oil tank through hole.

According to the technical scheme, the air channel is arranged inside the oil tank, and the oil tank and the hydraulic cylinder are combined into a whole, so that the hydraulic jack is small in overall size, attractive in appearance and convenient to operate, and meets the use requirements of people on the hydraulic jack.

However, the inventor finds that in the long-term use process, in the process that the piston rod moves in the vertical direction in the rod cavity, friction is generated between the piston rod and the inner wall of the cylinder body due to contact, and because the friction is sliding friction, the abrasion is easy to increase in the long-term use process, the problem of leakage occurs, and therefore the lifting of the piston rod is influenced, and the overall service life is influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide the self-lubricating vertical jack which can lubricate the outer peripheral wall of a piston rod in the lifting process of the piston rod so as to reduce abrasion generated in lifting and prolong the whole service life.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a but self-lubricating vertical jack, includes the base, the base is connected with casing and oil return valve, be used for storing fluid in the casing, be equipped with the cylinder body in the casing, be equipped with stop collar and piston rod in the cylinder body, stop collar outer wall and the mutual butt of cylinder body inner wall, the piston rod passes the stop collar and extends to in the cylinder body, piston rod, stop collar and cylinder body mutually support and form confined confession piston rod along the cavity of vertical direction removal, the top of stop collar is equipped with the oil storage chamber, be used for filling lubricating fluid in the oil storage chamber, the lubricating fluid in the oil storage chamber moves along vertical direction along the piston rod along with the piston rod, forms lubricating oil film in the piston rod periphery.

The utility model is further provided with: the inner wall of the limit sleeve is provided with an embedded groove, the embedded groove is arranged around the inner wall of the limit sleeve, a sealing ring is arranged in the embedded groove and is matched with the embedded groove, and when the piston rod passes through the limit sleeve, the sealing ring is propped against the outer wall of the piston rod and forms sealing fit between the piston rod and the piston rod.

The utility model is further provided with: the oil return valve is obliquely arranged.

The utility model is further provided with: the oil return valve is characterized in that a mounting groove for mounting the oil return valve is formed in the shell, and the heights of the mounting groove are sequentially increased along the direction away from the shell so as to form an inclined connecting side wall.

The utility model is further provided with: the side wall of the shell is provided with a folding angle which is bent along the direction away from the oil return valve to form a yielding space.

Compared with the prior art, the utility model has the beneficial effects that:

through setting up the stock solution chamber, the lubricated fluid in the stock solution intracavity can be along with the removal of piston rod along vertical direction, forms the lubricating oil film in the piston rod periphery to this reduces the wearing and tearing that produce because of the friction between piston rod lift and the cylinder body inner wall, thereby can prolong holistic life, be favorable to long-term use.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic view of the internal part of the housing according to the present utility model;

FIG. 4 is a schematic view of a partial connection structure of a back flow valve and a base in the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 4, the utility model discloses a self-lubricating vertical jack, which comprises a base 1, wherein the base 1 is connected with a shell 2 and an oil return valve 3, oil is stored in the shell 2, a cylinder body 4 is arranged in the shell 2, a limit sleeve 5 and a piston rod 6 are arranged in the cylinder body 4, the outer wall of the limit sleeve 5 is mutually abutted with the inner wall of the cylinder body 4, the piston rod 6 penetrates through the limit sleeve 5 and extends into the cylinder body 4, the piston rod 6, the limit sleeve 5 and the cylinder body 4 are mutually matched to form a closed cavity for the piston rod 6 to move in the vertical direction, an oil storage cavity 7 is arranged above the limit sleeve 5, the oil storage cavity 7 is used for filling lubricating oil, the lubricating oil in the oil storage cavity 7 can move along the vertical direction along with the piston rod 6, and a lubricating oil film is formed at the periphery of the piston rod 6, so that abrasion caused by friction between the piston rod 6 and the inner wall of the cylinder body 4 during lifting is reduced, the whole service life can be prolonged, and long-term use is facilitated.

In this embodiment, inlay groove 51 is further equipped with at stop collar 5 inner wall, inlay groove 51 and encircle stop collar 5 inner wall setting, inlay inslot 51 is equipped with sealing washer 8, sealing washer 8 and inlay groove 51 shape looks adaptation, when stop collar 5 is passed to piston rod 6, sealing washer 8 supports and presses in piston rod 6 outer wall, and constitute the sealed cooperation between the two, through stop collar 5 that sets up, can play the effect of direction to the removal of piston rod 6 along vertical direction, thereby make the lift of piston rod 6 more stable, and can improve the sealing performance of contact between stop collar 5 and the piston rod 6 through the sealing washer 8 that sets up, prevent to produce the pressure release between stop collar 5 and the piston rod 6, and influence the normal lift of piston rod 6.

In this embodiment, the oil return valve 3 is mainly used for lifting the piston rod 6, in the jack field, the shell 2 and the cylinder 4 are communicated through an oil inlet oil path and an oil outlet oil path, and the oil return valve 3 is communicated with the oil outlet oil path, so that when the hydraulic jack works, the oil return valve 3 needs to be screwed at this time, so that the oil contained in the shell 2 can be pumped to the cylinder 4 through the oil inlet oil path, and the piston rod 6 is pushed by the oil pressure formed by the oil pumped to the cylinder 4, so that the piston rod 6 is lifted relative to the cylinder 4, and the lifting effect of the hydraulic jack on heavy objects is realized; when the piston rod 6 is reset, the oil outlet passage can be opened by unscrewing the oil return valve 3, so that the oil in the cylinder body 4 can be returned to the shell 2 through the oil outlet passage to release the oil pressure in the cylinder body 4, and the reset of the piston rod 6 is realized, and the lifting principle of the piston rod 6 is common knowledge in the jack field, so that the oil outlet passage and the oil inlet passage are not specifically shown in the specification and the drawing.

In addition, in this embodiment, the oil return valve 3 is further obliquely disposed, and the concrete structure is that a mounting groove 21 for mounting the oil return valve 3 is disposed in the housing 2, and the heights of the mounting grooves 21 are sequentially increased along the direction away from the housing 2, so as to form an inclined connecting side wall, so that the oil return valve 3 can be mounted in an inclined posture, and by obliquely disposing the oil return valve 3, the moving path of the oil return valve 3 can be prevented from being blocked when the jack is used in the uneven occasion, and the normal reset of the piston rod 6 is affected, so that the utility model can be suitable for more use scenes, and the application range is enlarged.

In this embodiment, the side wall of the housing 2 is further provided with a folded angle 22, and the folded angle 22 is folded along the direction away from the oil return valve 3 to form a yielding space 221, and through the provided yielding space 221, a sufficient space can be reserved for the running path of the oil return valve 3, so that the oil return valve 3 is further prevented from being impacted by foreign objects under the condition of protruding the base 1, and thus the failure of the oil return valve 3 can be prevented.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims (5)

1. The utility model provides a but self-lubricating vertical jack, its characterized in that, includes the base, the base is connected with casing and oil return valve, be used for storing fluid in the casing, be equipped with the cylinder body in the casing, be equipped with stop collar and piston rod in the cylinder body, stop collar outer wall and the mutual butt of cylinder body inner wall, the piston rod passes the stop collar and extends to in the cylinder body, piston rod, stop collar and cylinder body mutually support and form confined confession piston rod and follow the cavity that vertical direction removed, the top of stop collar is equipped with the oil storage chamber, be used for filling lubricating fluid in the oil storage chamber, the lubricating fluid in the oil storage chamber moves along vertical direction along the piston rod, forms the lubricating oil film in the piston rod periphery.

2. The self-lubricating vertical jack according to claim 1, wherein the inner wall of the limit sleeve is provided with an embedded groove, the embedded groove is arranged around the inner wall of the limit sleeve, a sealing ring is arranged in the embedded groove and is matched with the embedded groove, and when the piston rod passes through the limit sleeve, the sealing ring is pressed against the outer wall of the piston rod and forms sealing fit between the piston rod and the embedded groove.

3. A self-lubricating vertical jack according to claim 1, wherein the return valve is inclined.

4. A self-lubricating vertical jack according to claim 3, wherein the housing is provided with mounting slots for mounting the return valves, the mounting slots increasing in height in sequence in a direction away from the housing to form inclined engagement side walls.

5. A self-lubricating vertical jack according to claim 3, wherein the side wall of the housing is provided with a fold angle which is bent in a direction away from the return valve to form a relief space.