CN215059116U

CN215059116U - Variable-pitch cab shock absorber

Info

Publication number: CN215059116U
Application number: CN202023252671.7U
Authority: CN
Inventors: 吴建忠; 鲁剑锋
Original assignee: Jiaxing Jiajia Automobile Parts Manufacturing Co ltd
Current assignee: Jiaxing Jiajia Automobile Parts Manufacturing Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-12-07
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a variable-pitch cab shock absorber, including oil storage cylinder, working cylinder, piston rod guide holder, supplementary recovered valve assembly, piston rod, piston, compression valve system, recovered valve system, the compression valve system with the recovered valve system all is located the piston, the piston rod with the oil storage cylinder two is provided with first spacing subassembly and second spacing subassembly respectively in the one end of keeping away from each other, the oil storage cylinder assembly outside cover is equipped with the spring, the spring is located between first spacing subassembly and the second spacing subassembly and the both ends of spring respectively with first spacing subassembly and the contact of second spacing subassembly; the spring is gradually reduced from the middle part to the two ends or from one end to the other end along the axial thread pitch of the spring.

Description

Variable-pitch cab shock absorber

Technical Field

The utility model belongs to the technical field of the bumper shock absorber, specifically speaking relates to a variable pitch driver's cabin bumper shock absorber.

Background

Along with the popularization of automobiles and the improvement of living standard, the requirement of people on the riding comfort of the automobiles is higher and higher, the structure of the traditional adjustable resistance shock absorber is more complex, the requirement on processing precision is higher, the cost is high, a valve system of the shock absorber is composed of a recovery valve system and a compression valve system, and because the recovery valve system and the compression valve system are two relatively independent valve systems in the shock absorber, the change of the damping force is only to generate corresponding damping force by opening or closing the valve of the original valve. For missile transport vehicles, road conditions of the form are often poor, and for automobile cabs, jolts encountered in the driving process of the vehicles are transmitted into the cabs at the same time.

Disclosure of Invention

The utility model aims at providing a variable pitch driver's cabin bumper shock absorber, it is anticipated to solve the technical problem who exists among the background art.

In order to solve the technical problem, the purpose of the utility model is to realize like this:

a variable-pitch cab shock absorber comprises an oil storage cylinder, a working cylinder, a piston rod guide seat, an auxiliary recovery valve assembly, a piston rod, a piston, a compression valve system and a recovery valve system, wherein the compression valve system and the recovery valve system are both positioned on the piston, a first limiting component and a second limiting component are respectively arranged at one ends, far away from each other, of the piston rod and the oil storage cylinder, a spring is sleeved outside the oil storage cylinder assembly, the spring is positioned between the first limiting component and the second limiting component, and two ends of the spring are respectively in contact with the first limiting component and the second limiting component; the spring is gradually reduced from the middle part to the two ends or from one end to the other end along the axial thread pitch of the spring.

On the basis of the above scheme and as a preferable scheme of the scheme: the second limiting assembly is sleeved outside the oil storage cylinder and fixedly connected with the outer peripheral surface of the oil storage cylinder.

On the basis of the above scheme and as a preferable scheme of the scheme: the second limiting component comprises a limiting plate, and the limiting plate is sleeved on the piston rod and is fixedly connected with the piston rod.

On the basis of the above scheme and as a preferable scheme of the scheme: the limiting plate extends out of a fixing sleeve along one end, which is far away from the piston, of the limiting plate along the axial direction, the fixing sleeve is sleeved with the piston rod, and a screw penetrates into the piston rod along the radial direction of the fixing sleeve and is partially screwed into the piston rod.

On the basis of the above scheme and as a preferable scheme of the scheme: and a buffer sleeve is arranged between one end of the oil storage cylinder, which is close to the limiting plate, and the limiting plate, one end of the buffer sleeve is in contact with the limiting plate, and the other end of the buffer sleeve is in contact with the oil storage cylinder.

On the basis of the above scheme and as a preferable scheme of the scheme: the limiting plate axially extends out of a buffer sleeve limiting part towards one end of the oil storage cylinder, and an accommodating cavity is formed in the buffer sleeve limiting part towards one end of the oil storage cylinder. One end of the buffer sleeve is embedded in the containing cavity.

On the basis of the above scheme and as a preferable scheme of the scheme: the inner wall of the opening of the accommodating cavity is provided with an annular limiting bulge, and the minimum distance of the annular limiting bulge is smaller than the outer diameter of the buffer sleeve.

On the basis of the above scheme and as a preferable scheme of the scheme: the cross section of the annular limiting bulge is triangular.

On the basis of the above scheme and as a preferable scheme of the scheme: the middle part of one end of the buffer sleeve, which faces the limiting plate, is provided with a tapered hole.

Compared with the prior art, the utility model outstanding and profitable technological effect is: 1. through the arrangement of the spring with the variable pitch, the part with the small pitch is difficult to compress, and the part with the large pitch is easier to deform, so that the micro jolt can be better absorbed compared with the existing shock absorber; in addition, when the vehicle jolts greatly, the part of the spring with the larger pitch deforms and compresses and the piston further compresses, at the moment, the front part deforms and absorbs part of the jolt, the deformation is gradually transmitted to the part with the smaller pitch of the spring, the jolt is also gradually absorbed, the part with the smaller pitch deforms more difficultly, and the absorbed jolt is more obvious, so that the deformation amount of the part with the smaller pitch is smaller, and the jolt of the vehicle in the driving process of the vehicle is further reduced.

2. The buffer sleeve is added, so that the vibration absorption effect of the shock absorber is further improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic diagram of the spring structure of the present invention;

FIG. 3 is a schematic diagram of a second spring according to an embodiment.

Detailed Description

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step, based on the given embodiments, fall within the scope of protection of the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

With reference to fig. 1-2, a variable-pitch cab shock absorber includes an oil reservoir 100, a working cylinder 200, a piston rod guide seat 300, an auxiliary restoring valve assembly 700, a piston rod 400, a piston 500, a compression valve train and a restoring valve train, where the compression valve train and the restoring valve train are both located on the piston 500, and is characterized in that: a first limiting component 620 and a second limiting component 640 are respectively arranged at one end of the piston rod 400, which is far away from the oil storage cylinder 100, a spring 800 is sleeved outside the oil storage cylinder assembly 100, the spring 800 is positioned between the first limiting component 620 and the second limiting component 640, and two ends of the spring 800 are respectively contacted with the first limiting component 620 and the second limiting component 640; the spring 800 tapers along its axial pitch from the second end 820 to the first end 810.

In this embodiment, preferably, the second limiting component 640 is sleeved outside the oil storage cylinder 100 and is fixedly connected to the outer circumferential surface of the oil storage cylinder 100. Specifically, the second limiting component 640 includes a limiting plate 624, and the limiting plate 624 is sleeved on the piston rod 400 and is fixedly connected to the piston rod 400. A fixing sleeve 623 extends from one end of the limiting plate 624 away from the piston along the axial direction, the fixing sleeve 623 is sleeved on the piston rod 400, and a screw 625 penetrates along the radial direction of the fixing sleeve 623 and is partially screwed into the piston rod 400. Therefore, the spring can be limited by the first limiting component 620 and the second limiting component 640, and the spring is synchronously compressed or stretched in the piston compression process or the piston recovery process.

Through the arrangement of the spring with the variable pitch, the part with the small pitch is difficult to compress, and the part with the large pitch is easier to deform, so that the micro jolt can be better absorbed compared with the existing shock absorber; in addition, when the vehicle jolts greatly, the part of the spring with the larger pitch deforms and compresses and the piston further compresses, at the moment, the front part deforms and absorbs part of the jolt, the deformation is gradually transmitted to the part with the smaller pitch of the spring, the jolt is also gradually absorbed, the part with the smaller pitch deforms more difficultly, and the absorbed jolt is more obvious, so that the deformation amount of the part with the smaller pitch is smaller, and the jolt of the vehicle in the driving process of the vehicle is further reduced.

In order to further improve the shock absorbing effect of the shock absorber, in the present embodiment, a buffering sleeve 610 is preferably disposed between one end of the oil storage cylinder 100 close to the limiting plate 624 and the limiting plate 624, one end of the buffering sleeve 610 contacts the limiting plate 624, and the other end contacts the oil storage cylinder 100.

Based on the consideration of the stability of the cushion collar 610, in the embodiment, preferably, one end of the limiting plate 624 facing the oil storage cylinder 100 axially extends out of a cushion collar limiting portion 621, and the cushion collar limiting portion 621 facing one end of the oil storage cylinder 100 is provided with an accommodating cavity 6212. One end of the buffer sleeve 610 is embedded in the accommodating cavity 6212. Preferably, the inner wall of the opening of the accommodating cavity 6212 is provided with a ring-shaped limiting protrusion 6211, and the minimum distance of the ring-shaped limiting protrusion 6211 is smaller than the outer diameter of the buffer sleeve 610. The section of the annular limiting bulge 6211 is triangular. Therefore, the buffer sleeve 610 can be well limited, and the stability of the buffer sleeve in the operation process is ensured.

Further preferably, a tapered hole 611 is formed in the middle of one end, facing the limiting plate, of the cushion sleeve 610, and the tapered hole 611 is used for enabling the cushion sleeve 610 to have a certain deformation compression space in the accommodating cavity 6212 when the cushion sleeve 610 deforms under a stress, so that the strength of the upper end of the cushion sleeve 610 is reduced, even if the elasticity of the upper end of the cushion sleeve 610 is reduced, the cushion sleeve also has a buffering overshoot in a buffering process, the impact of the bumping on the seat is greatly reduced, and the comfort of the seat is improved.

Example two

Referring to fig. 3, the difference from the first embodiment is that the pitch of the spring 800 is gradually decreased from the middle to both ends along the axial direction thereof. This structure also enables further reduction in vehicle pitching during vehicle running.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A variable-pitch cab shock absorber comprises an oil storage cylinder (100), a working cylinder (200), a piston rod guide seat (300), an auxiliary recovery valve assembly (700), a piston rod (400), a piston (500), a compression valve system and a recovery valve system, wherein the compression valve system and the recovery valve system are both positioned on the piston (500), and the variable-pitch cab shock absorber is characterized in that: a first limiting component (620) and a second limiting component (640) are respectively arranged at one ends, far away from each other, of the piston rod (400) and the oil storage cylinder (100), a spring (800) is sleeved outside the oil storage cylinder (100), the spring (800) is located between the first limiting component (620) and the second limiting component (640), and two ends of the spring (800) are respectively contacted with the first limiting component (620) and the second limiting component (640); the pitch of the spring (800) along the axial direction thereof is gradually reduced from the middle part to the two ends or from one end to the other end.

2. A variable pitch cab shock absorber according to claim 1, wherein: the second limiting component (640) is sleeved outside the oil storage cylinder (100) and fixedly connected with the outer peripheral surface of the oil storage cylinder (100).

3. A variable pitch cab shock absorber according to claim 1, wherein: the second limiting component (640) comprises a limiting plate (624), and the limiting plate (624) is sleeved on the piston rod (400) and is fixedly connected with the piston rod (400).

4. A variable pitch cab shock absorber according to claim 3, wherein: the limiting plate (624) extends out of a fixing sleeve (623) along one end, which is far away from the piston, along the axial direction, the fixing sleeve (623) is sleeved on the piston rod (400), and a screw (625) penetrates through the fixing sleeve (623) along the radial direction and is partially screwed into the piston rod (400).

5. A variable pitch cab shock absorber according to claim 4, wherein: the oil storage cylinder (100) is close to one end of the limiting plate (624) and a buffer sleeve (610) is arranged between the limiting plates (624), one end of the buffer sleeve (610) is in contact with the limiting plate (624), and the other end of the buffer sleeve (610) is in contact with the oil storage cylinder (100).

6. A variable pitch cab shock absorber according to claim 4, wherein: limiting plate (624) orientation the one end axial extension of oil storage cylinder (100) buffers the spacing portion of cover (621), the spacing portion of buffer cover (621) orientation an accommodation chamber (6212) has been seted up to oil storage cylinder (100) one end, the one end of buffer cover (610) is inlayed and is located in accommodation chamber (6212).

7. A variable pitch cab shock absorber according to claim 6, wherein: an annular limiting bulge (6211) is arranged on the inner wall of the opening of the accommodating cavity (6212), and the minimum distance of the annular limiting bulge (6211) is smaller than the outer diameter of the buffer sleeve (610).

8. A variable pitch cab shock absorber according to claim 7, wherein: the section of the annular limiting bulge (6211) is triangular.

9. A variable pitch cab shock absorber according to claim 6, wherein: the middle of one end, facing the limiting plate, of the buffer sleeve is provided with a tapered hole (611).