CN216997442U

CN216997442U - Guiding device and jack

Info

Publication number: CN216997442U
Application number: CN202122944832.7U
Authority: CN
Inventors: 于孝达
Original assignee: Shenzhen Yangning Auto Parts Co ltd
Current assignee: Shenzhen Yangning Auto Parts Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-07-19
Anticipated expiration: 2031-11-26

Abstract

The application discloses a guiding device and a jack, wherein the jack comprises an oil circuit valve and an inner cylinder, the oil circuit valve is arranged in the inner cylinder, the conduction of an oil circuit in the jack is controlled by sliding in the inner cylinder, the guiding device comprises a guiding belt, and the guiding belt is fixed on the oil circuit valve and is attached to the inner cylinder; and the friction force between the guide belt and the inner cylinder is smaller than the friction force between the oil circuit valve and the inner cylinder. Through the design, the friction force between the oil way valve and the inner barrel is reduced, so that the guide belt plays a role in guiding the oil way valve when the oil way valve ascends or descends in the inner barrel, the acting force applied to the oil way valve by a user is reduced, and the manpower is saved.

Description

Guiding device and jack

Technical Field

The application relates to the field of mechanical equipment, in particular to a guide device and a jack.

Background

The jack is a very practical tool, is widely applied to various fields, and brings great convenience to the work and life of people. In order to adapt to different uses, the structure of the jack in the prior art is also various, such as hydraulic type, screw type, rack type, pneumatic type and the like.

At present, when an object is raised by using a jack, a large external acting force needs to be applied, and a control piston pipe drives an oil way valve to perform lifting motion in an inner cylinder, so that the manpower consumption is large.

SUMMERY OF THE UTILITY MODEL

The utility model provides a guider and jack can just can control the oil circuit valve through less effort and carry out elevating movement in the inner tube, uses manpower sparingly.

The application discloses a guiding device for a jack, wherein the jack comprises an oil circuit valve and an inner cylinder, the oil circuit valve is arranged in the inner cylinder, the conduction of an oil circuit in the jack is controlled by sliding in the inner cylinder, the guiding device comprises a guiding belt, and the guiding belt is fixed on the oil circuit valve and is attached to the inner cylinder; and the friction force between the guide belt and the inner cylinder is smaller than the friction force between the oil circuit valve and the inner cylinder.

Optionally, a first annular guide groove is formed in the oil path valve, and the first annular guide groove is formed in one end of the oil path valve; the guide belt is disposed in the first annular guide groove, surrounding the oil path valve.

Optionally, the guide band is made of hard elastic material, and two ends of the guide band are opposite to each other, so that the guide band forms a circular ring shape.

Optionally, the first end of the guide band includes a first notch and a first boss, the second end of the guide band includes a second notch and a second boss, the first notch corresponds to the second boss, and the second notch corresponds to the first boss; and a gap is arranged between the first boss and the bottom of the second notch, and a gap is arranged between the second boss and the bottom of the first notch.

Optionally, the side wall of the first boss is attached to the side wall of the second boss.

Optionally, the first notch, the first boss, the second notch and the second boss are all rectangular in shape, and the depth of the first notch, the depth of the second notch, the length of the first boss and the length of the second boss are equal; the widths of the first notch, the first boss, the second notch and the second boss are also equal and are half of the width of the guide belt.

Optionally, the guide belt is made of a mixed material of polytetrafluoroethylene and copper powder.

Optionally, the thickness of the guide strip is equal to the depth of the first annular guide groove.

Optionally, a second annular guide groove is further disposed on the oil circuit valve, and the second annular guide groove is disposed at one end of the oil circuit valve, which is far away from the first annular guide groove; the two guide belts are respectively arranged in the first annular guide groove and the second annular guide groove and surround the oil circuit valve.

The application also discloses a jack, including as above guider.

According to the oil way valve, the guide belt attached to the inner cylinder is arranged on the oil way valve, and the friction force between the guide belt and the inner cylinder is smaller than that between the oil way valve and the inner cylinder, so that when the oil way valve is lifted in the inner cylinder, friction mainly occurs between the guide belt and the inner cylinder, and the friction force between the oil way valve and the inner cylinder is reduced; the guide belt plays a role in guiding the oil way valve when the oil way valve ascends or descends in the inner barrel, so that the acting force applied to the oil way valve by a user is reduced, the manpower is saved, and the using effect of the user on the product is improved. And the friction damage between the oil way valve and the inner cylinder is avoided, and the service life of the jack is prolonged.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic view of a jack provided herein;

FIG. 2 is a schematic view of the interior of a jack as claimed;

FIG. 3 is a schematic view of an oil circuit valve provided herein;

FIG. 4 is a schematic view of a guide strip provided herein;

FIG. 5 is a schematic illustration of a first type of oil circuit valve provided herein in cooperation with a guide strip;

fig. 6 is a schematic view of a second oil path valve provided in the present application in cooperation with a guide belt.

Wherein, 100, a jack; 110. an inner barrel; 120. an oil path valve; 121. a first annular guide groove; 122. a second annular guide groove; 130. a guide belt; 131. a first notch; 132. a first boss; 133. a second notch; 134. a second boss; 140. a piston tube; 200. a guide device.

Detailed Description

The present application is described in detail below with reference to the figures and alternative embodiments.

As shown in fig. 1 and 2, which are schematic views of a first jack provided in an embodiment of the present disclosure, a jack 100 includes an oil path valve 120, an inner cylinder 110, and a guide device 200, where the oil path valve 120 is disposed in the inner cylinder 110, and divides an internal area of the inner cylinder 110 into an oil storage area and a hydraulic area, the oil storage area is filled with hydraulic oil, and the oil path valve 120 controls conduction of an oil path in the jack 100, that is, conduction of the oil storage area and the hydraulic area, by sliding in the inner cylinder 110.

As shown in fig. 3, the guiding device 200 includes a guiding strip 130, and the guiding strip 130 is fixed on the oil path valve 120 and attached to the inner cylinder 110; and the friction between the guide belt 130 and the inner cylinder 110 is smaller than the friction between the oil path valve 120 and the inner cylinder 110. Since the oil path valve 120 is disposed in the inner tube 110, the inner tube 110 is divided into an oil storage region and a hydraulic region, and the oil path valve 120 controls the communication between the oil storage region and the hydraulic region; when the oil storage region is filled with hydraulic oil, the piston tube 140 guides the hydraulic oil into the hydraulic region through the oil path valve 120, so that the oil path valve 120 slides in the inner tube 110.

Through the design, when the oil path valve 120 moves up and down in the inner cylinder 110, friction is mainly generated between the guide belt 130 and the inner cylinder 110, so that the friction force between the oil path valve 120 and the inner cylinder 110 is reduced; the guiding belt 130 is equivalent to a guiding function when the oil way valve 120 ascends or descends in the inner cylinder 110, so that the acting force applied by a user to the oil way valve 120 is reduced, the manpower is saved, and the using effect of the user on the product is improved. And the friction damage between the oil way valve 120 and the inner cylinder 110 is avoided, and the service life of the jack 100 is prolonged.

Specifically, a first annular guide groove 121 is formed in the oil path valve 120, and the first annular guide groove 121 is formed in one end of the oil path valve 120, that is, the bottom of the oil path valve 120; the guide band 130 is disposed in the first annular guide groove 121, surrounding the oil path valve 120. Because the guiding belt 130 is fixed at the bottom of the oil path valve 120, i.e. the end of the oil path valve 120 far away from the piston tube 140, when the oil path valve 120 performs lifting movement in the inner cylinder 110, because the diameter of the oil path valve 120 is slightly smaller than that of the inner cylinder 110, the oil path valve 120 will slightly tilt in the inner cylinder 110, and at this time, mainly the bottom of the oil path valve 120 is forced to rub against the inner cylinder 110; therefore, the first annular guide groove 121 is provided at the bottom of the oil valve 120, and the guide band 130 is installed in the first annular guide groove 121, reducing the frictional force between the oil valve 120 and the inner tube 110 during the inclination of the oil valve during movement.

It should be noted that, the guide belt 130 in the present application is made of hard elastic material, and compared to the guide belt 130 made of soft elastic material such as rubber and silicone, hard elastic material such as spring and plastic can recover deformation quickly, and the surface of hard elastic material is smoother without generating large friction with the inner cylinder. Correspondingly, the guide belt 130 is of a circular ring structure with a broken middle part, and two ends of the guide belt 130 are opposite to each other under normal conditions to form a circular ring; when the guide band 130 is pulled, both ends of the guide band 130 are moved away from each other, so that the guide band 130 is unfolded in a bar shape. In the process of installing the guide band 130 in the first annular guide groove 121, the guide band 130 is slightly unfolded, and the guide band 130 enters the first annular guide groove 121 to recover the deformation and is attached to the oil way valve 120; the oil way valve 120 provided with the guide belt 130 is placed into the inner cylinder 110, the guide belt 130 is extruded by the inner cylinder 110, so that the guide belt 130 is attached to the oil way valve 120, manual adjustment is not needed in the processes, the installation efficiency of the guide belt 130 is accelerated, and the production efficiency of the jack 100 is improved.

Preferably, the guide belt 130 is made of a mixture of Polytetrafluoroethylene (PTFE) and copper powder, and through many experiments, the inventor finds that when the guide belt 130 is made of a mixture of the two materials, burrs are not easily generated on the surface of the guide belt 130, and the smoothness of the surface of the guide belt 130 is greatly improved, thereby being beneficial to reducing the friction between the guide belt 130 and the inner cylinder 110. In addition, the wear resistance, corrosion resistance and elastic effect of the prepared guide belt 130 are greatly improved, and the service life of the guide belt 130 is further prolonged; moreover, the guide band 130 has a good oil blocking effect, so that hydraulic oil is prevented from penetrating into the guide band 130 and then freely flowing out along a gap between the oil path valve 120 and the inner cylinder 110.

After the guide belt 130 is installed in the first annular guide groove 121, the width and thickness of the guide belt 130 are matched with the width and depth of the first annular guide groove 121, so that the installation of the guide belt 130 is facilitated, the guide belt 130 is prevented from shaking in the first annular guide groove 121, and the problem that the guide belt 130 is broken due to the fact that the guide belt 130 is protruded out of the first annular guide groove 121 and bears all extrusion force of the inner cylinder 110 on the oil way valve 120 is avoided.

Polishing one surface of the guide belt 130 so that the roughness of the surface of the guide belt 130, which is in contact with the oil path valve 120, is greater than the roughness of the surface of the guide belt, which is in contact with the inner cylinder 110; further reducing the friction between the guide band 130 and the inner cylinder 110.

As shown in fig. 4, the first end of the guide band 130 includes a first notch 131 and a first boss 132, the second end of the guide band 130 includes a second notch 133 and a second boss 134, the first notch 131 corresponds to the second boss 134, and the second notch 133 corresponds to the first boss 132. As shown in fig. 4 and 5, when the guide band 130 is installed in the first annular guide groove 121, a gap is formed between the first boss 132 and the bottom of the second notch 133, and a gap is formed between the second boss 134 and the bottom of the first notch 131. The bosses and the gaps at the two ends of the guide belt 130 are designed, so that the two ends of the guide belt 130 cannot make mistakes in the manufacturing process, and the qualification rate of the guide belt 130 is improved; moreover, compared with the scheme that the two ends of the guide band 130 are made to be flat, the matching design of the boss and the notch and the design of the gap between the boss and the corresponding notch enable the guide band 130 to be taken out from the first annular guide groove 121 more easily, the process inserts fingers into the gap between the boss and the corresponding notch, and one end of the guide band 130 is pulled outwards, so that the disassembly efficiency of the guide band 130 is improved.

In addition, the side wall of the first boss 132 is attached to the side wall of the second boss 134, so that even if hydraulic oil enters the gap between the boss and the corresponding notch, the hydraulic oil is blocked by the joint of the first boss 132 and the second boss 134, thereby ensuring the sealing performance between the guide belt 130, the oil path valve 120 and the inner cylinder.

Specifically, the first notch 131, the first boss 132, the second notch 133 and the second boss 134 are all rectangular, and the depth of the first notch 131, the depth of the second notch 133, the length of the first boss 132 and the length of the second boss 134 are equal; the widths of the first notch 131, the first boss 132, the second notch 133 and the second boss 134 are also equal to each other, and are half of the width of the guide band 130.

As shown in fig. 6, a second annular guide groove 122 may be further formed in the oil circuit valve 120, and the second annular guide groove 122 is formed at an end of the oil circuit valve 120, which is far from the first annular guide groove 121, that is, at an end close to the piston tube 140; the guide belts 130 are two and are respectively disposed in the first and second

annular guide grooves

121 and 122 to surround the oil path valve 120. Thus, when the oil path valve 120 moves in the inner cylinder 110 and tilts, the guide belts 130 at the bottom and top of the oil path valve 120 can be forced to abut against and rub against the inner cylinder 110, and the bottom and top of the oil path valve 120 can be prevented from scratching the inner cylinder 110. And after the guide belt 130 is also additionally arranged at the top of the oil way valve 120, the guide effect of the guide belt 130 on the movement of the oil way valve 120 is further improved, and the function of further saving labor is achieved. Of course, a greater number of guide belts 130 may be further provided in the present application, for example, an annular guide belt 130 is further added in the middle of the oil way valve 120; alternatively, the guide band 130 may have another shape, such as a long strip disposed along the longitudinal direction of the inner cylinder 110, or a shape wrapping the oil path valve 120.

The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the specific implementations of the present application are not to be considered limited to these descriptions. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.

Claims

1. A guide device is used for a jack, the jack comprises an oil circuit valve and an inner cylinder, the oil circuit valve is arranged in the inner cylinder, and the conduction of an oil circuit in the jack is controlled by sliding in the inner cylinder, and the guide device is characterized by comprising a guide belt, and the guide belt is fixed on the oil circuit valve and is attached to the inner cylinder; and the friction force between the guide belt and the inner cylinder is smaller than the friction force between the oil circuit valve and the inner cylinder.

2. The guide device according to claim 1, wherein the oil circuit valve is provided with a first annular guide groove, and the first annular guide groove is arranged at one end of the oil circuit valve;

the guide belt is arranged in the first annular guide groove and arranged around the oil circuit valve.

3. The guide device of claim 2, wherein said guide strip is formed of a stiff resilient material and opposite ends of said guide strip to form said guide strip into a circular loop.

4. The guide device of claim 3, wherein the first end of the guide strip includes a first notch and a first boss, the second end of the guide strip includes a second notch and a second boss, the first notch corresponds to the second boss, and the second notch corresponds to the first boss; and a gap is arranged between the first boss and the bottom of the second notch, and a gap is arranged between the second boss and the bottom of the first notch.

5. The guide device of claim 4, wherein the side wall of the first boss abuts the side wall of the second boss.

6. The guide device of claim 5, wherein the first notch, the first boss, the second notch, and the second boss are all rectangular in shape, and the depth of the first notch, the depth of the second notch, the length of the first boss, and the length of the second boss are equal; the widths of the first notch, the first boss, the second notch and the second boss are also equal and are half of the width of the guide belt.

7. The guide device of claim 3, wherein said guide strip is comprised of a blend of polytetrafluoroethylene and copper powder.

8. The guide device of claim 3, wherein the guide band has a thickness equal to a depth of the first annular guide groove.

9. The guide device as set forth in claim 2, wherein a second annular guide groove is further provided in said oil circuit valve, said second annular guide groove being provided at an end of said oil circuit valve remote from said first annular guide groove;

the two guide belts are respectively arranged in the first annular guide groove and the second annular guide groove and surround the oil circuit valve.

10. A lifting jack comprising a guide as claimed in any one of claims 1 to 9.