CN209970567U

CN209970567U - Device for fixing lower air chamber shell

Info

Publication number: CN209970567U
Application number: CN201920388012.4U
Authority: CN
Inventors: 杜汪朋
Original assignee: Guangzhou Gaipu Automobile Fittings Co Ltd
Current assignee: Guangzhou Gaipu Automobile Fittings Co Ltd
Priority date: 2019-03-25
Filing date: 2019-03-25
Publication date: 2020-01-21
Anticipated expiration: 2029-03-25

Abstract

The utility model discloses a device for fixing a lower air chamber shell, which comprises a bottom plate and at least three scale rods fixed on the bottom plate, wherein the central axis of each scale rod is positioned on the side surface of the same virtual inverted round table, and each scale rod is distributed in the circumferential direction of the virtual inverted round table at equal angles; each coaxial cover of scale rod is equipped with the lantern ring, and the lantern ring side is equipped with the screw thread through-hole, still includes with screw thread through-hole complex bolt and a terminal surface fixed connection in the gag lever post of lantern ring side, the other terminal surface of gag lever post extends towards the center pin of virtual round platform of falling. The lower air chamber shell is fixed through the matching of the scale rods, the lantern rings and the limiting rods, the lower air chamber shell is self-checked through whether scales at the corresponding positions of the lantern rings on the scale rods are consistent or not, and the circular truncated cone-shaped lower air chamber shells with different tapers and sizes can be fixed through the mutual matching of the scale rods.

Description

Device for fixing lower air chamber shell

Technical Field

The utility model relates to a brake chamber assembles technical field, concretely relates to a device for fixing down air chamber shell.

Background

The brake air chamber is also called a slave cylinder, and the function of the brake air chamber is to convert the pressure of compressed air into mechanical force for rotating a brake cam shaft to realize braking action. The composite brake air chamber comprises accessories such as a push rod, a lower air chamber shell, a middle air chamber shell, an upper air chamber shell, a return spring, a supporting disc and a brake spring, the lower air chamber shell of the brake air chamber in the prior art is generally cylindrical or round table-shaped, the lower air chamber shell needs to be fixed in advance during assembly of the brake air chamber, but the round table-shaped lower air chamber shell is difficult to fix and stabilize, a base for fixing the lower air chamber shell is arranged aiming at the corresponding size in the prior art, the composite brake air chamber cannot be suitable for the lower air chamber shells with different sizes, and the assembly is influenced by the fact that a clamp in the prior art is inclined and clamped easily. Therefore, there is a need for a device for fixing a lower air chamber housing that is adaptable to various sizes and is not prone to tilt.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a device for fixing a lower air chamber shell, which keeps the tension of a power transmission line.

The purpose of the utility model is realized by adopting the following technical scheme:

a device for fixing a lower air chamber shell comprises a bottom plate and at least three scale rods fixed on the bottom plate, wherein the central axis of each scale rod is positioned on the side surface of the same virtual inverted round table, and the scale rods are distributed at equal angles along the circumferential direction of the virtual inverted round table; each coaxial cover of scale rod is equipped with the lantern ring, and the lantern ring side is equipped with the screw thread through-hole, still includes with screw thread through-hole complex bolt and a terminal surface fixed connection in the gag lever post of lantern ring side, the other terminal surface of gag lever post extends towards the center pin of virtual round platform of falling.

In a specific embodiment of the present invention, the axis of the limiting rod is perpendicular to the axis of the virtual inverted round platform.

In a specific embodiment of the present invention, the limiting rod is a micro electric telescopic rod.

In a specific embodiment of the present invention, the scale rod is a tubular structure made of polymethyl methacrylate, and the scale of the scale rod is disposed on the inner wall of the scale rod.

The utility model discloses an among the concrete implementation mode, still include the bracing piece, on the lower extreme of bracing piece was fixed in the bottom plate, the upper end and the bracing piece fixed connection of scale rod.

In a specific embodiment of the present invention, each of the support rods is distributed along a circumference from the virtual to the circular truncated cone at equal angles.

In a specific embodiment of the present invention, the central axis of each support rod is located at the side of the same virtual circular truncated cone.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the lower air chamber shell is fixed through the matching of the scale rods, the lantern rings and the limiting rods, the lower air chamber shell is self-checked through whether scales at the corresponding positions of the lantern rings on the scale rods are consistent or not, and the circular truncated cone-shaped lower air chamber shells with different tapers and sizes can be fixed through the mutual matching of the scale rods.

Drawings

Fig. 1 is a schematic structural view of an apparatus for fixing a lower air chamber housing according to embodiment 1.

Fig. 2 is a schematic structural view of an apparatus for fixing a lower air chamber housing according to embodiment 2.

Fig. 3 is a schematic structural view of an apparatus for fixing a lower air chamber housing according to embodiment 3.

Wherein: 10. a base plate; 20. a graduated rod; 30. a collar; 40. a bolt; 50. a limiting rod; 60. a support bar; 70. a lower air chamber housing.

Detailed Description

Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "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, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1, the present embodiment discloses a fixing device for a lower air chamber housing 70, which includes a bottom plate 10 and three scale rods 20 fixed on the bottom plate 10, wherein a central axis of each scale rod 20 is located on a side surface of a same virtual truncated cone, and each scale rod 20 is distributed at an equal angle along a circumferential direction of the virtual truncated cone; each scale rod 20 is coaxial to be equipped with the lantern ring 30 of overlapping, and lantern ring 30 side is equipped with the screw thread through-hole, still includes with screw thread through-hole complex bolt 40 and a terminal surface fixed connection in the gag lever post 50 of lantern ring 30 side, and the other end face of gag lever post 50 extends towards the center pin of virtual round platform of falling.

The inverted round table-shaped lower air chamber shell 70 is placed in a space enclosed by the three scale rods 20 and the bottom plate 10, three contact points are formed between the three scale rods 20 and the edge of the lower air chamber shell 70, the bolts 40 are loosened, the collar 30 is adjusted to enable the limiting rods 50 to be in contact with the upper end of the lower air chamber shell 70, whether scales of the three collars 30 corresponding to the scale rods 20 are the same or not is compared, if not, the lower air chamber shell 70 is adjusted to have the same scale corresponding to the three collars 30, the bolts 40 are screwed, the lower air chamber shell 70 is stably fixed, and the fixing positions are six.

When the axis of the limiting rod 50 is perpendicular to the axis of the virtual inverse round table at the same position of the upper end of the fixed lower air chamber, the length of the limiting rod 50 is required to be shortest.

The limiting rod 50 is a miniature electric telescopic rod.

Miniature electric telescopic handle is prior art structure, no longer gives unnecessary details here, and gag lever post 50 can be according to the nimble length of adjusting gag lever post 50 of the lower air chamber shell 70 of different sizes when being miniature electric telescopic handle, and the space that reduces to occupy is withdrawed when not using.

The graduated rod 20 is a tubular structure made of polymethyl methacrylate, and the graduations of the graduated rod 20 are arranged on the inner tube wall of the graduated rod 20.

The tubular scale rod 20 made of polymethyl methacrylate is good in wear resistance and high in transparency, scales are marked on the inner tube wall, the scales are read through the rod body from the outside, the scales cannot be abraded in the adjusting process of the lantern ring 30, and the clarity of the scales is guaranteed.

In order to enhance the supporting strength of the scale rod 20, the scale rod further comprises a supporting rod 60, the lower end of the supporting rod 60 is fixed on the bottom plate 10, and the upper end of the scale rod 20 is fixedly connected with the supporting rod 60.

In order to ensure that the supporting strength of the three scale rods 20 is consistent with that of the corresponding supporting rod 60 structure, and the average stress is uniform, the supporting rods 60 are distributed at equal angles along the virtual circumferential direction of the circular truncated cone.

According to the gravity of the lower air chamber shell 70, the central axis of each support rod 60 is positioned on the side surface of the same virtual circular truncated cone, and in a triangular support structure formed by the scale rod 20, the support rods 60 and the corresponding part of the bottom plate 10, the included angle relative to one side of the scale rod 20 is an acute angle or a right angle, so that the time when the generated horizontal outward component force is relatively an obtuse angle is small, and the probability of fracture at the joint of the scale rod 20 and the bottom plate 10 is effectively reduced.

Example 2

As shown in fig. 2, the present embodiment discloses a fixing device for lower air chamber housing 70 similar to that of embodiment 1 except that the fixed lower air chamber housing 70 has a truncated cone shape.

Example 3

As shown in fig. 3, the present embodiment discloses a fixing device for lower air chamber housing 70 similar to embodiment 1 except that the fixed lower air chamber housing 70 has a cylindrical shape.

The above embodiments are only some of the preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A device for fixing a lower air chamber shell comprises a bottom plate and at least three scale rods fixed on the bottom plate, and is characterized in that the central axis of each scale rod is positioned on the side surface of the same virtual inverted round table, and the scale rods are distributed at equal angles along the circumferential direction of the virtual inverted round table; the coaxial cover of each scale rod is equipped with the lantern ring, lantern ring side is equipped with the screw thread through-hole, still include with screw thread through-hole complex bolt and a terminal surface fixed connection in the gag lever post of lantern ring side, the other terminal surface of gag lever post is faced the center pin of virtual round platform of falling extends.

2. The apparatus of claim 1, wherein an axis of the stop bar is perpendicular to an axis of the virtual truncated cone.

3. The apparatus of claim 2, wherein the restraint bar is a miniature electric telescopic bar.

4. The apparatus of claim 1, wherein the graduated rod is a tubular structure made of polymethyl methacrylate, and the graduations of the graduated rod are disposed on the inner tubular wall of the graduated rod.

5. The apparatus of claim 1, further comprising a support rod, wherein a lower end of the support rod is fixed to the bottom plate, and an upper end of the scale rod is fixedly connected to the support rod.

6. An apparatus as claimed in claim 5, wherein said support rods are equiangularly distributed along a circumference of said virtual to circular truncated cone.

7. The apparatus of claim 6, wherein the central axis of each of the support rods is located on a side of the same virtual truncated cone.