CN221123250U - Measuring device for measuring height difference between cylinder cover and timing chain box - Google Patents

Abstract

The application relates to the field of brake disc systems for automobiles, in particular to a measuring device for measuring the height difference between a cylinder cover and a timing chain box. The measuring device for measuring the height difference between the cylinder cover and the timing chain box can overcome the technical problems existing in the measuring mode of the prior art, and is used as a simple tool structure for rapidly and accurately judging whether the plane height difference between the cylinder cover and the timing chain box is qualified or not. The device is simple in design, and operators can quickly and accurately determine whether the plane height difference between the cylinder cover and the timing chain box is qualified or not, so that the operation efficiency and the stability are improved. Meanwhile, an accurate height difference measurement result can be provided, and continuous accurate measurement is ensured.

Description

Measuring device for measuring height difference between cylinder cover and timing chain box

Technical Field

The utility model relates to an auxiliary measuring device for specific types of automobile parts, in particular to a measuring device for measuring the height difference between a cylinder cover and a timing chain box.

Background

A cylinder head (CYLINDER HEAD) is an important component of the engine and is positioned above the engine block to close the cylinder and piston top. It generally includes intake and exhaust valves, camshafts, cylinder head gaskets, etc., and functions of sealing the cylinder, controlling valve movement, dissipating heat, etc. A timing chain case (TIMING CHAIN Cover) is a housing that covers the engine timing chain (TIMING CHAIN) for protecting the timing chain, sprocket and related drive components. It also provides a mounting location for the tension regulator and seal of the timing chain.

The main purpose of measuring the plane height difference between the engine cylinder cover and the timing chain box is to ensure the sealing performance and the alignment accuracy between the engine cylinder cover and the timing chain box. The difference in plane height between the engine head and the timing chain case affects the sealing performance therebetween. If there is a large height difference, leakage of the compressed gas and the lubricating oil in the tank may be caused. Through measuring plane difference in height, can ensure cylinder cap and chain box and can closely laminate, effectively prevent the leakage of fluid. By measuring the plane height difference and performing proper adjustment, the accuracy of timing assembly can be ensured, and the performance of the engine can be improved.

In a word, the purpose of measuring engine cylinder cap and timing chain box plane difference is in order to realize accurate location to ensure sealing performance, and guarantee the accuracy of assembly size. This helps to improve the reliability, performance and life of the engine, ensures proper engine operation and reduces the risk of failure.

Currently, there are two methods for measuring the height difference between the cylinder head and the timing chain case. 1. Directly measuring the height difference by using a ruler; 2. knife edge measurement: the knife edge ruler is horizontally arranged between the cylinder cover and the timing chain box, and is plugged in a gap between the cylinder cover and the timing chain box by a 0.2mm plug ruler, and the knife edge ruler is not qualified when not passing through the gap, otherwise, the knife edge ruler is not qualified. For the former, the numerical value within 0.2mm needs to be read visually, and the numerical value is difficult to read, and meanwhile, errors are possibly caused by errors of a method for placing a ruler, so that defective products are caused to flow downwards; for the latter, the knife edge is sharp, and the cylinder cover and the timing chain box are easy to scrape in use. The efficiency is low, and the device is not suitable for mass production lines.

Based on this, the present utility model has been proposed.

Disclosure of utility model

In order to overcome the technical defects existing in the prior art of measuring the height difference between the cylinder cover and the timing chain box, the application provides a measuring device for measuring the height difference between the cylinder cover and the timing chain box, in particular to a simple tool structure, which aims to quickly and accurately judge whether the plane height difference between the cylinder cover and the timing chain box is qualified or not so as to improve the working efficiency and the stability.

According to the application, the measuring device for measuring the height difference between the cylinder cover and the timing chain box is provided, a positioning surface and a measuring surface are respectively determined on the measuring cylinder cover and the timing chain box, the measuring device comprises a positioning block and a measuring pin with the same height, the positioning block is arranged on the positioning surface and comprises a body and an edge part protruding along the edge of the body, a counter bore penetrating through the edge part is formed in the edge part, the measuring pin is inserted into the counter bore to contact with the measuring surface, the other end is arranged on the upper surface of the edge part, and the height difference between the positioning surface and the measuring surface is determined according to the position relation between the other end and the upper surface of the edge part.

In a further aspect of the application, the upper surface of the rim portion includes a first height surface and a second height surface, the first height surface and the second height surface being bordered by a diameter of the counterbore, the first height surface and the second height surface having a height difference h.

In a further scheme of the application, the countersunk hole sequentially comprises a first aperture part and a second aperture part from top to bottom, and the measuring pin sequentially comprises a first pin body, a second pin body and a third pin body from top to bottom, wherein the first pin body corresponds to the first aperture part, and the height of the first pin body is smaller than the hole depth of the first aperture part.

In a further embodiment of the application, the third pin is embodied as a downward cone, the end of which is a ball head which is in contact with the measuring surface.

In a further aspect of the application, the end face of the edge portion is provided with a mounting hole, and the mounting hole and the countersink are vertically arranged.

In a further aspect of the present application, the measuring device further includes a limiting component, and the limiting component is connected to the positioning block and is used for restricting the displacement degree of freedom of the positioning block.

In a further aspect of the application, the spacing assembly includes: the mounting seats are respectively connected to two sides of the positioning block in the width direction.

In a further aspect of the application, the mounting block and the positioning block are detachably connected.

In a further scheme of the application, the mounting seat and the bottom corner of the positioning block are correspondingly L-shaped, the mounting seat comprises a horizontal base and a limiting plate along the length direction of the positioning block, and the bases are spaced by a preset distance to reserve a space for the positioning block to contact with the positioning surface. In a further scheme of the application, the limiting plate is provided with a through groove along the length direction of the positioning block; in a further aspect of the present application, the limiting assembly further includes: the mounting screw penetrates through the through groove and is connected to the positioning block.

In summary, an embodiment of the present utility model provides a measuring device for measuring a height difference between a cylinder head and a timing chain box, where a positioning surface and a measuring surface are respectively determined on the cylinder head and the timing chain box, the measuring device includes a positioning block and a measuring pin with the same height, the positioning block is disposed on the positioning surface, the positioning block includes a body and an edge portion protruding along an edge of the body, the edge portion is provided with a countersunk hole penetrating through the edge portion, the measuring pin is inserted into the countersunk hole and contacts with the measuring surface, and the other end is disposed on an upper surface of the edge portion, so that the height difference between the positioning surface and the measuring surface can be determined according to a positional relationship between the other end and the upper surface of the edge portion. The measuring device for measuring the height difference between the cylinder cover and the timing chain box can overcome the technical problems existing in the measuring mode of the prior art, and is used as a simple tool structure for rapidly and accurately judging whether the plane height difference between the cylinder cover and the timing chain box is qualified or not. The device is simple in design, and operators can quickly and accurately determine whether the plane height difference between the cylinder cover and the timing chain box is qualified or not, so that the operation efficiency and the stability are improved. Meanwhile, an accurate height difference measurement result can be provided, and continuous accurate measurement is ensured.

Additional features and advantages of embodiments of the utility model will be set forth in the detailed description which follows.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the application and that other drawings can be obtained from them without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a measuring device for measuring the height difference between a cylinder head and a timing chain box according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a measuring device according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram illustrating a positioning block in a measuring apparatus according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a measuring pin in a measuring device according to an embodiment of the present utility model;

FIG. 5 is a schematic cross-sectional view of a measuring apparatus according to an embodiment of the present utility model;

FIG. 6 is an enlarged view of an edge portion of a measuring device according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram illustrating a structure of a mounting base in a measuring apparatus according to an embodiment of the present utility model; and

FIG. 8 is a schematic diagram illustrating a measurement apparatus in an installed state according to an embodiment of the present utility model.

Description of the marking

100. A measuring device;

11. A positioning block; 111. a body; 112. an edge portion; 113. a pin hole; 1121. a first elevation surface; 1122. a second elevation surface; 1131. a first aperture portion; 1132. a second aperture portion;

12. a measuring pin; 121. a first pin body; 122. a second pin body; 123. a third pin body; 124. a mounting hole;

13. A limit component; 131. a mounting base; 132. installing a screw; 1311. a base; 1312. a limiting plate; 1313. and (5) through grooves.

Detailed Description

To further clarify the above and other features and advantages of the present application, a further description of the application will be rendered by reference to the appended drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not limiting, as to those skilled in the art.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the specific details need not be employed to practice the present application. In other instances, well-known steps or operations have not been described in detail in order to avoid obscuring the application.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a measuring device 100 for measuring a height difference between a cylinder head and a timing chain box according to an embodiment of the utility model; FIG. 2 is an exploded view of a measuring device 100 according to an embodiment of the present utility model.

The embodiment of the utility model firstly provides a measuring device 100 for measuring the height difference between a cylinder cover and a timing chain box, wherein the measuring device 100 comprises a positioning block 11, a measuring pin 12 and a limiting component 13; the positioning block 11 and the measuring pin 12 have the same height, and the shape of the positioning block 11 can be preferably rectangular, so that the positioning block is convenient to process and place on the surface of one of the measuring cylinder cover and the timing chain box. The measuring pin 12 passes through the positioning block 11 and contacts with the surface of the other of the measuring cylinder cover or the timing chain box, and the limiting assembly 13 is used for limiting the position of the positioning block 11 so as to ensure accurate measurement.

Specifically, the positioning block 11 is placed on the positioning surface, and comprises a body 111 and an edge portion 112 protruding along the edge of the body 111, a pin hole 113 penetrating through the edge portion is formed in the edge portion 112, the measuring pin 12 is inserted into the pin hole 113, the bottom of the measuring pin is in contact with the measuring surface, and the top of the measuring pin is located on the upper surface of the edge portion 112.

The above mentioned "locating surface" and "measuring surface" are respectively the planes of the height difference measured on the cylinder cover and the timing chain box, if the cylinder cover is the locating surface, the timing chain box is the measuring surface, otherwise the timing chain box is the measuring surface, and the cylinder cover is the locating surface. After the locating surface and the measuring surface are determined on the measuring cylinder cover and the chain box, the positioning block 11 is placed on the locating surface, the measuring pin 12 is inserted into the pin hole 113 and is contacted on the measuring surface at the bottom, if the measuring pin 12 and the locating block 11 are flush, the locating surface and the measuring surface are completely consistent, otherwise, if the measuring pin 12 is higher or lower than the locating block 11, the height difference between the cylinder cover and the timing chain box is proved. Then according to the condition of the measuring pin 12 and the upper surface of the positioning block 11, whether the height difference between the measuring cylinder cover and the timing chain box is within the allowable range can be quickly known.

With continued reference to fig. 3, fig. 3 is a schematic structural diagram of the positioning block 11 in the measuring apparatus 100 according to the embodiment of the utility model. In a further aspect of the present utility model, the upper surface of the edge 112 includes a first height surface 1121 and a second height surface 1122, the first height surface 1121 and the second height surface 1122 are defined by the diameter of the pin hole 113, the first height surface 1121 and the measuring pin 12 are identical in height, and the first height surface 1121 and the second height surface 1122 have a height difference h.

Specifically, the upper surface of the positioning block has a dividing line at the half circumference of the pin hole 113, and the second height surface 1122 sinks by h, which may be 0.2mm. After the measuring pin 12 with the same height as the first height surface 1121 is inserted into the pin hole 113, the bottom is in plane contact with the positioning surface, the positioning surface faces the whole positioning block 11 and plays a role of positioning and supporting, and if the upper surface of the measuring pin 12 is leveled with the upper surface of the first height surface 1121, the height difference between the measuring cylinder cover and the timing chain is zero at the moment; if the upper surface of the measuring pin B is lower than the second height surface 1122 on the positioning block 11, the height difference between the measuring cylinder cover and the timing chain is over 0.2mm, and the part can be judged to be unqualified. Therefore, an operator can quickly and accurately determine whether the plane height difference between the cylinder cover and the timing chain box is qualified or not, and the working efficiency and the stability are improved. Meanwhile, an accurate height difference measurement result can be provided, and continuous accurate measurement is ensured.

With continued reference to fig. 4, 5 and 6, fig. 4 is a schematic structural diagram of the measuring pin 12 in the measuring apparatus 100 according to the embodiment of the present utility model; FIG. 5 is a schematic cross-sectional view of a measuring apparatus 100 according to an embodiment of the present utility model; FIG. 6 is an enlarged view of the edge portion 112 of the measuring device 100 according to the embodiment of the present utility model.

In a further aspect of the embodiment of the present utility model, the pin hole 113 includes a first aperture portion 1131 and a second aperture portion 1132 sequentially from top to bottom, and the measuring pin 12 includes a first pin body 121, a second pin body 122, and a third pin body 123 sequentially from top to bottom, where the first pin body 121 corresponds to the first aperture portion 1131, and a height L2 of the first pin body 121 is smaller than a hole depth L1 of the first aperture portion 1131.

Specifically, the pin hole 113 adopts a countersunk hole, and the hole depth L1 of the first hole diameter portion 1131 is greater than the height L1 of the first pin body 121, so as to reserve a space for the pin hole 113 to move up and down, and when the height of the measuring surface contacted with the bottom of the pin hole 113 changes, the pin hole 113 can freely float up and down.

Further, the third pin body 123 is designed as a downward cone, so as to be fast inserted into the pin hole 113, and avoid interference with the pin hole 113 during insertion; and the end of the third pin 123 is a ball head contacting with the measuring surface. Thereby providing a relatively smooth contact with the measuring surface, avoiding scratching the measuring surface.

The end face of the edge 112 is provided with a mounting hole 124, the mounting hole 124 and the pin hole 113 are vertically arranged, the mounting hole 124 and the pin hole 113 can form a through hole, one of the mounting hole 124 and the pin hole 113 can lock the measuring pin 12 in an unused state to prevent the measuring pin from loosening or sliding, so that the position and the posture of the measuring pin 12 in the unused state can be kept unchanged, the measuring accuracy and the measuring reliability are improved, and meanwhile, the ball head of the measuring pin 12 can be upwards increased by a certain distance in the use state, the ball head contact damage of the measuring pin 12 is avoided, and the measuring precision is influenced.

Referring to fig. 1 to 2 in combination with fig. 7 and 8, fig. 7 is a schematic structural diagram of a mounting base 131 in a measuring apparatus 100 according to an embodiment of the present utility model, and fig. 8 is a schematic diagram illustrating a mounting state of the measuring apparatus 100 according to an embodiment of the present utility model.

The limiting assembly 13 is connected to the positioning block 11 and is used for limiting the displacement freedom degree of the positioning block 11.

In the embodiment of the present utility model, the limiting component 13 includes a plurality of mounting seats 131, where the mounting seats 131 are detachably connected to two sides of the width direction of the positioning block 11, so as to restrict displacement of the mounting seats 131 in the width direction, avoid movement or inclination of the mounting seats, and simultaneously, the mounting seats 131 distribute two sides of the mounting seats to make force distribution more uniform, thereby enhancing operation stability.

The detachable connection design is adopted between the mounting base 131 and the positioning block 11, so that the mounting base 131 can be easily connected with or separated from the positioning block 11, the position of the measuring device 100 can be more conveniently replaced through the detachable connection, specifically, the positioning block 11 is placed on the positioning surface of the cylinder cover, when one side of the timing chain box is lower than one side of the cylinder cover, the measuring pin penetrates through the positioning block 11 to detect the measuring surface of the timing chain box, if the measuring pin 12 is found to be higher than the positioning block 11, the limiting component 13 and the positioning block 11 can be removed, the positioning block 11 is placed on one side of the timing chain box and is fixed by the limiting component 13, at the moment, the surface on the timing chain box is used as the positioning surface, the measuring pin 12 detects the measuring surface on the cylinder cover, and the judging method can be referred to above.

In an alternative solution of the embodiment of the present utility model, the mounting base 131 is in an L shape, so as to correspond to a bottom corner of the positioning block 11, and the mounting base 131 includes a horizontal base 1311 and a limiting plate 1312 along a length direction of the positioning block 11, where a preset distance is spaced between the bases 1311, so as to reserve a space where the positioning block 11 contacts with a positioning surface. The limit plate 1312 is provided with a through groove 1313 along the length direction of the positioning block 11; the limiting assembly 13 further comprises a mounting screw 132, and the mounting screw 132 is connected to the positioning block 11 through the through groove 1313. The through grooves 1313 allow the limiting plate to be position-adjusted within a certain range. By adjusting the position of the mounting screw 132 in the through slot 1313, the relative position between the limit plate 1312 and the positioning block 11 can be changed. Thus, fine tuning and optimization can be performed as needed to meet the requirements of a particular application. When the limit plate 1312 is to be removed, the mounting screw 132 is simply loosened. Therefore, the quick disassembly and replacement can be realized, and the maintenance and replacement time and workload are reduced.

In summary, an embodiment of the present utility model provides a measuring device for measuring a height difference between a cylinder head and a timing chain box, where a positioning surface and a measuring surface are respectively determined on the cylinder head and the chain box, the measuring device includes a positioning block and a measuring pin with the same height, the positioning block is disposed on the positioning surface, the positioning block includes a body and an edge portion protruding along an edge of the body, the edge portion is provided with a countersunk hole penetrating through the edge portion, the measuring pin is inserted into the countersunk hole to contact with the measuring surface, and the other end is disposed on an upper surface of the edge portion, so that the height difference between the positioning surface and the measuring surface can be determined according to a positional relationship between the other end and the upper surface of the edge portion. The measuring device for measuring the height difference between the cylinder cover and the timing chain box can overcome the technical problems existing in the measuring mode of the prior art, and is used as a simple tool structure for rapidly and accurately judging whether the plane height difference between the cylinder cover and the timing chain box is qualified or not. The device is simple in design, and operators can quickly and accurately determine whether the plane height difference between the cylinder cover and the timing chain box is qualified or not, so that the operation efficiency and the stability are improved. Meanwhile, an accurate height difference measurement result can be provided, and continuous accurate measurement is ensured.

Further, it should be understood by those skilled in the art that if all or part of the sub-modules involved in each product of the measuring device 100 provided by the embodiments of the present utility model are combined and replaced by fusing, simple changing, mutual changing, etc., such as placing each component in a moving position; or the products formed by the two are integrally arranged; or a removable design; it is within the scope of the present utility model to replace the corresponding components of the present utility model with devices/apparatuses/systems that may be combined to form a device/apparatus/system having a specific function.

It is to be understood that the specific features, operations and details described herein before with respect to the method of the application may be similarly applied to the apparatus and system of the application, or vice versa. In addition, each step of the method of the present application described above may be performed by a corresponding component or unit of the apparatus or system of the present application.

The technical features described above may be arbitrarily combined. Although not all possible combinations of features are described, any combination of features should be considered to be covered by the description provided that such combinations are not inconsistent.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims (10)

1. The utility model provides a measuring device for measuring cylinder cap and timing chain box difference in height, its characterized in that, measuring device includes locating piece (11) and measuring pin (12) of same height, locating piece (11) are arranged in on the locating surface, include body (111) and along edge portion (112) that body (111) edge is outstanding, edge portion (112) department sets up one and runs through pin hole (113) of edge portion, measuring pin (12) peg graft bottom and measuring surface contact in pin hole (113), the other end is in edge portion (112) upper surface department.

2. The measuring device according to claim 1, wherein the edge portion (112) includes a first height surface (1121) and a second height surface (1122) at an upper surface thereof, the first height surface (1121) and the second height surface (1122) are defined by a diameter of the pin hole (113), and the first height surface (1121) and the second height surface (1122) have a height difference h.

3. The measuring device according to claim 1, wherein the pin hole (113) sequentially comprises a first aperture portion (1131) and a second aperture portion (1132) from top to bottom, the measuring pin (12) sequentially comprises a first pin body (121), a second pin body (122) and a third pin body (123) from top to bottom, wherein the first pin body (121) corresponds to the first aperture portion (1131), and the height of the first pin body (121) is smaller than the hole depth of the first aperture portion (1131).

4. A measuring device according to claim 3, characterized in that the third pin body (123) is of downward conical design, the third pin body (123) ending in a ball head in contact with the measuring surface.

5. The measuring device according to claim 1, wherein a mounting hole (124) is formed in an end surface of the edge portion (112), and the mounting hole (124) and the pin hole (113) are vertically arranged.

6. The measuring device according to claim 1, further comprising a limiting assembly (13), the limiting assembly (13) being connected to the positioning block (11) for constraining the degree of freedom of displacement of the positioning block (11).

7. The measuring device according to claim 6, wherein the limiting assembly (13) comprises:

the mounting seats (131) are respectively connected to two sides of the positioning block (11) in the width direction.

8. The measuring device according to claim 7, characterized in that the mounting block (131) and the positioning block (11) are detachably connected.

9. The measuring device according to claim 8, wherein the mounting base (131) is L-shaped to correspond to a bottom corner of the positioning block (11), and the mounting base (131) includes a horizontal base (1311) and a limiting plate (1312) along a length direction of the positioning block (11), wherein the bases (1311) are spaced by a predetermined distance to reserve a space where the positioning block (11) contacts with the positioning surface.

10. The measuring device according to claim 9, wherein the limiting plate (1312) is provided with a through slot (1313) along the length direction of the positioning block (11);

The limit assembly (13) further comprises:

and the mounting screw (132) passes through the through groove (1313) and is connected to the positioning block (11).