CN210660233U

CN210660233U - Valve bridge guide rod with exhaust passage

Info

Publication number: CN210660233U
Application number: CN201921015355.2U
Authority: CN
Inventors: 张振坤; 吴定勇; 苏怀林
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-06-02
Anticipated expiration: 2029-07-02

Abstract

The utility model provides a take valve bridge guide bar of exhaust passage, include: one end of the guide rod is connected with the valve bridge in a sliding mode, the other end of the guide rod is fixedly connected with the cylinder cover, a first exhaust passage and a second exhaust passage are further formed in the bottom end of the guide rod, the axis of the first exhaust passage is located on the central axis of the guide rod, the second exhaust passage is communicated with the upper end of the first exhaust passage, and the axis of the second exhaust passage is perpendicular to the axis of the first exhaust passage; the valve bridge guide rod with the exhaust passage provided by the utility model is additionally provided with the exhaust passage for exhausting the air in the mounting hole, so that the valve bridge guide rod can be pressed in place, and the precision is accurate; due to the existence of the exhaust passage, the shrinkage of the bottom is increased, and the press fitting is convenient.

Description

Valve bridge guide rod with exhaust passage

Technical Field

The utility model belongs to the technical field of the cylinder cap cooling, concretely relates to take valve bridge guide bar of exhaust passage.

Background

At present, more and more valve bridge guide mechanisms are applied to engines. The valve bridge guide rod is used as an important component part in a guide mechanism and is increasingly applied. The valve bridge guide rod is generally of a cylindrical structure and is fixed on a cylinder cover datum plane. The valve bridge is guided in a certain fixed direction by the cylindrical surface contact. The installation tolerances of the valve bridge guide lever itself have a great influence on the guiding function. If the verticality deviation between the valve bridge guide rod and the guide reference surface is overlarge, the original guide function is lost, and the abnormal abrasion of the valve bridge is caused. When the valve bridge guide rod is installed on the blind hole, air in the installation hole cannot be removed, high-pressure compressed air is formed often, and the valve bridge guide rod is prevented from being pressed in. The valve bridge guide rod is pressed in batch by a machine. When the pressure of the internal compressed air is too high, the valve bridge guide rod is not pressed in place, and the top of the valve bridge guide rod can collide with the valve bridge. In addition, the verticality of the valve bridge guide rod can be influenced, and the deviation of the guide direction is caused.

The Chinese patent application with the publication number of CN108868938A discloses a valve bridge with increased guide fit length, wherein the valve bridge comprises a valve bridge guide rod and a valve bridge body, the valve bridge body is provided with a valve bridge guide hole, and the valve bridge guide hole is used for installing the valve bridge guide rod. The valve bridge is provided with the valve bridge inner reaming hole at the bottom of the valve bridge guide hole, so that the guide matching length is increased, the space is fully utilized, the oil storage space is increased, and lubrication is facilitated.

It can be seen that the valve bridge guide rod in the prior art mainly focuses on designing the inner reaming hole of the valve bridge at the bottom of the valve bridge guide hole to increase the guide matching length, and the excessive pressure of the internal compressed air can cause the deviation of the guide direction when the guide rod is installed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take valve bridge guide bar of exhaust passage aims at solving among the prior art when the installation guide bar inside compressed air's pressure too big can cause the problem that the direction of direction takes place the deviation.

For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:

the utility model provides a take valve bridge guide bar of exhaust passage, include: the air valve comprises a guide rod, one end of the guide rod is connected with a valve bridge in a sliding mode, the other end of the guide rod is fixedly connected with an air cylinder cover, a first exhaust passage and a second exhaust passage are further formed in the bottom end of the guide rod, the axis of the first exhaust passage is located on the central axis of the guide rod, the second exhaust passage is communicated with the upper end of the first exhaust passage, and the axis of the second exhaust passage is perpendicular to the axis of the first exhaust passage.

Preferably, one end of the guide rod, which is connected with the cylinder head in a sliding manner, is further provided with a guide surface, and the guide surface is of a conical structure.

Preferably, the guide rod is connected with the cylinder cover in an interference fit mode.

Preferably, the inner diameter of the first exhaust duct is 4 mm.

Preferably, the inner diameter of the second exhaust passage is 2 mm.

The utility model has the advantages that:

1. the utility model provides a take valve bridge guide bar of air discharge way has increased the exhaust passage, is used for the air in the exhaust mounting hole, ensures that valve bridge guide bar can the pressure equipment target in place, and the precision is accurate.

2. The utility model provides a take valve bridge guide bar of air discharge way because the existence of exhaust passage, has increased the shrinkage of bottom, makes things convenient for the pressure equipment.

Drawings

Fig. 1 is a schematic view of the overall structure of a valve bridge guide rod with an exhaust passage according to the present invention;

fig. 2 is a cross-sectional view of the valve bridge guide rod with the exhaust passage of the present invention.

In the figure, 100 is a cylinder head, 101 is a valve bridge, 102 is a guide rod, 103 is a first exhaust passage, 104 is a guide surface, and 105 is a second exhaust passage.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is further described in detail by the following embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The utility model provides a take valve bridge guide bar of exhaust passage, as shown in figure 1, figure 2, include:

a guide rod 102, one end of the guide rod 102 is slidably connected with the valve bridge 101, the other end of the guide rod 102 is fixedly connected with the cylinder head 100, and a first exhaust passage 103 and a second exhaust passage 105 (as shown in fig. 2) are further formed at the bottom end of the guide rod 102; the axis of the first exhaust passage 103 is located on the central axis of the guide rod 102, the second exhaust passage 105 is communicated with the upper end of the first exhaust passage 103 and used for exhausting internal gas, and the axis of the second exhaust passage 105 is perpendicular to the axis of the first exhaust passage 103; because the cylinder head 100 is internally provided with structures such as an air passage, a water passage and the like, the mounting hole of the guide rod 102 is generally designed to be a blind hole, and in the process of mounting the guide rod 102 on the cylinder head 100, air between the guide rod 102 and the mounting hole on the cylinder head 100 can be discharged along the first exhaust passage 103 and the second exhaust passage 105, so that compressed air cannot be generated, the guide rod 102 can be smoothly pressed in place, and the pressing precision is ensured.

In one embodiment, the end of the guide rod 102 slidably coupled to the cylinder head 100 is further provided with a guide surface 104, and the guide surface 104 has a tapered configuration.

In some embodiments, the guide rod 102 is attached to the cylinder head 100 by an interference fit.

In some embodiments, the inner diameter of the first exhaust duct 103 is 4 mm.

In some embodiments, the second exhaust passageway 105 has an inner diameter of 2 mm.

Reference in the specification to "some embodiments," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in various places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with a feature, structure, or characteristic of one or more other embodiments without limitation, as long as the combination is not logical or operational. Additionally, the various elements of the drawings of the present application are merely schematic illustrations and are not drawn to scale.

Having thus described several aspects of at least one embodiment of this invention, it is to be appreciated various alterations, modifications, and improvements will readily occur to those skilled in the art. Such alterations, modifications, and improvements are intended to be within the spirit and scope of the invention.

Claims

1. The utility model provides a take valve bridge guide bar of exhaust passage which characterized in that includes: the air valve comprises a guide rod, one end of the guide rod is connected with a valve bridge in a sliding mode, the other end of the guide rod is fixedly connected with an air cylinder cover, a first exhaust passage and a second exhaust passage are further formed in the bottom end of the guide rod, the axis of the first exhaust passage is located on the central axis of the guide rod, the second exhaust passage is communicated with the upper end of the first exhaust passage, and the axis of the second exhaust passage is perpendicular to the axis of the first exhaust passage.

2. A valve bridge guide lever with an exhaust passage as defined in claim 1, wherein: one end of the guide rod, which is in sliding connection with the cylinder cover, is also provided with a guide surface, and the guide surface is of a conical structure.

3. A valve bridge guide lever with an exhaust duct according to claim 1 or 2, wherein: the guide rod and the cylinder cover are connected in an interference fit mode.

4. A valve bridge guide lever with an exhaust duct according to claim 1 or 2, wherein: the inner diameter of the first exhaust duct is 4 mm.

5. A valve bridge guide lever with an exhaust duct according to claim 1 or 2, wherein: the inner diameter of the second exhaust passage is 2 mm.