Special gauge for measuring cylinder cover hole of engine

Abstract

The utility model discloses a special gauge for measuring an engine cylinder cover hole, which relates to the technical field of cylinder cover hole measurement and comprises a base, a horizontal platform is arranged right above the circle center of the base, and an adjusting assembly for driving the horizontal platform to adjust the inclination is rotatably arranged on the upper surface of the base. A positioning assembly is arranged between the lower surface of the horizontal platform and the base, the circle center of the lower surface of the horizontal platform is fixedly connected with a detection rod which penetrates through the positioning assembly and is in sliding connection with the positioning assembly, and the circumferential side of the bottom end of the detection rod is in sliding connection with a measuring device. According to the special detection tool for measuring the engine cylinder cover hole, the positioning assembly is arranged above the base, so that the supporting rod drives the sliding rod to slide synchronously under the action of downward movement of the nut, then the supporting rod abuts against the inner wall of the hole under the action of the hooks, and when the multiple hooks tightly abut against the inner wall of the hole, the base and the hole are concentric, so that the detection accuracy is improved. And the detection rod and the base are coaxial, so that the hole can be conveniently positioned.

Description

Technical Field

[0001] This utility model relates to the field of cylinder head bore measurement technology, specifically a special inspection tool for measuring engine cylinder head bores. Background Technology

[0002] Publication No.: CN106441001A, Title: Special Inspection Tool for Measuring Engine Cylinder Head Holes, discloses: including a horizontally placed platform, with inspection tool supports symmetrically and vertically arranged on both sides of the platform, the fixed ends of the inspection tool supports being connected to a horizontal support, and two dial indicators for measuring the cylinder head being installed on the horizontal support. By using the pre-set dial indicator values, two values ​​of the cylinder head can be measured simultaneously, improving the efficiency of the inspection;

[0003] Although the above method can measure two holes in the cylinder head at the same time, the upper surface of the cylinder head is a smooth surface without a positioning device. When measuring the holes, it is difficult to determine the center of the hole, which makes it easy to cause positional deviations during the measurement, thus affecting the measurement accuracy. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a special gauge for measuring engine cylinder head holes. It solves the problem that the upper surface of the cylinder head is a smooth surface without a positioning device, making it difficult to determine the center of the hole during measurement. This leads to positional deviations and affects measurement accuracy.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a special inspection tool for measuring engine cylinder head holes, comprising a base, the base being an annular structure, a horizontal platform being disposed directly above the center of the base, an adjustment component being rotatably disposed on the upper surface of the base to drive the horizontal platform to adjust its tilt, a positioning component being disposed between the lower surface of the horizontal platform and the base, a probe rod being fixedly connected to the center of the lower surface of the horizontal platform, passing through the positioning component and slidably connected thereto, and a measuring device being slidably connected to the periphery of the bottom end of the probe rod.

[0006] Preferably, the positioning component includes a sleeve rod rotatably connected to the horizontal platform, a plurality of first T-shaped blocks are slidably connected to the periphery of the sleeve rod, a plurality of sliding rods are provided around the base, the ends of the sliding rods extend into the base and are slidably connected thereto, and a support rod is provided between the first T-shaped blocks and the sliding rods, the two ends of the support rod being rotatably connected to the first T-shaped blocks and the sliding rods respectively.

[0007] Preferably, a nut is threadedly connected to the periphery of the sleeve rod and above the first T-shaped block, a first T-shaped groove matching the first T-shaped block is formed on the periphery of the sleeve rod, a hook is fixedly connected to the lower surface of the sliding rod extending into the base, a second T-shaped ring block is fixedly connected to the top of the sleeve rod, and a second T-shaped ring groove matching the second T-shaped ring block is formed on the lower surface of the horizontal platform.

[0008] Preferably, the adjustment assembly includes multiple telescopic rods, which are rotatably connected to the base via a rotating assembly. A connecting rod is provided between the top end of each telescopic rod and the horizontal platform, and both ends of the connecting rod are rotatably connected to the telescopic rod and the horizontal platform, respectively. Multiple adsorption components are fixedly connected to the lower surface of the base.

[0009] Preferably, the telescopic rod includes a first connecting rod fixedly connected to the rotating assembly, a second connecting rod is provided at the top end of the first connecting rod, the bottom end of the second connecting rod extends into the first connecting rod and is slidably connected thereto, a rack is fixedly connected to the side of the second connecting rod, a gear that meshes with the rack is rotatably connected inside the first connecting rod, a knob is rotatably connected to the side of the first connecting rod, the end of the knob extends into the first connecting rod and is fixedly connected to the gear, and a fixing bolt is also threadedly connected to the side of the first connecting rod, the end of the fixing bolt extending into the first connecting rod and abutting against the second connecting rod.

[0010] Preferably, the measuring device includes a measuring rod, and a sliding groove matching the measuring rod is provided on the periphery of the probe rod. A tension rod is provided between the upper surface of the measuring rod and the periphery of the probe rod. One end of the tension rod is rotatably connected to the measuring rod, and the other end of the tension rod is rotatably connected to a second T-shaped block. The second T-shaped block is slidably connected to the probe rod.

[0011] Preferably, the probe has a second T-shaped groove on its periphery that matches the second T-shaped block. A first spring is provided in the second T-shaped groove to drive the second T-shaped block to slide closer to the measuring rod. The two ends of the first spring are fixedly connected to the second T-shaped block and the second T-shaped groove, respectively.

[0012] Preferably, the rotating assembly includes an annular plate, a first T-shaped ring block is fixedly connected to the lower surface of the annular plate, and a first T-shaped ring groove matching the first T-shaped ring block is formed on the upper surface of the base.

[0013] Beneficial effects

[0014] This utility model provides a special gauge for measuring engine cylinder head bores. Compared with the prior art, it has the following advantages:

[0015] (1) The special inspection tool for measuring engine cylinder head holes uses a positioning component on the top of the base to make the support rod move synchronously with the slide rod when the nut moves down. Then, under the action of the hook, it abuts against the inner wall of the hole. When multiple hooks are tightly against the inner wall of the hole, the base and the hole are concentric, and the probe rod is coaxial with the base, thus realizing convenient positioning of the hole.

[0016] (2) The special gauge for measuring the cylinder head hole of the engine has a sliding connection between the measuring rod and the probe rod. The pulling rod drives the measuring rod to slide automatically and contact the inner wall of the hole, thus realizing the convenient measurement of the inner diameter of the hole. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an exploded view of the connection structure between the base and the horizontal platform of this utility model;

[0019] Figure 3 This is a bottom view of the base structure of this utility model;

[0020] Figure 4 This is an exploded view of the connection structure between the base and the positioning component of this utility model;

[0021] Figure 5 This is an exploded view of the horizontal platform and measuring device structure of this utility model;

[0022] Figure 6 This is an exploded view of the measuring device structure of this utility model.

[0023] In the diagram: 1. Base; 11. First T-shaped groove; 12. Adsorption assembly; 2. Horizontal platform; 21. Connecting rod; 3. Telescopic rod; 31. First connecting rod; 32. Second connecting rod; 321. Rack; 33. Gear; 331. Knob; 34. Fixing bolt; 4. Detector rod; 41. Second T-shaped groove; 42. Slide groove; 5. Measuring device; 51. Measuring rod; 52. Pulling rod; 53. First spring; 54. Second T-shaped block; 6. Positioning assembly; 61. Support rod; 611. First T-shaped block; 62. Slide rod; 621. Hook; 63. Sleeve rod; 631. First T-shaped groove; 632. Second T-shaped ring block; 64. Nut; 7. Rotating assembly; 71. Annular plate; 72. First T-shaped ring block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-6 This utility model provides a technical solution: a special inspection tool for measuring engine cylinder head holes, including a base 1, the base 1 is a ring structure, a horizontal platform 2 is set directly above the center of the base 1, an adjustment component is rotatably set on the upper surface of the base 1 to drive the horizontal platform 2 to adjust the tilt, a positioning component 6 is set between the lower surface of the horizontal platform 2 and the base 1, a probe rod 4 is fixedly connected to the center of the lower surface of the horizontal platform 2, passing through the positioning component 6 and slidably connected thereto, and a measuring device 5 is slidably connected to the periphery of the bottom end of the probe rod 4.

[0026] Specifically, the base 1 is attached to the upper surface of the engine cylinder head. During measurement, the engine cylinder head is placed horizontally to keep its upper surface level. The adjustment component drives the horizontal platform 2 to tilt and change its angle so that the horizontal platform 2 is parallel to the upper surface of the engine cylinder head. The positioning component 6 positions the hole in the engine cylinder head so that the center of the base 1 coincides with the center of the hole in the engine cylinder head. The probe 4 is coaxial with the base 1 so that the position of the probe 4 is the center of the hole. The measuring device 5 measures the radius of the hole at the center of the hole. The probe 4 is a transparent rod-shaped structure.

[0027] The positioning component 6 includes a sleeve rod 63 rotatably connected to the horizontal platform 2. Multiple first T-shaped blocks 611 are slidably connected up and down on the periphery of the sleeve rod 63. Multiple sliding rods 62 are provided around the base 1. The ends of the sliding rods 62 extend into the base 1 and are slidably connected thereto. A support rod 61 is provided between the first T-shaped blocks 611 and the sliding rods 62. The two ends of the support rod 61 are rotatably connected to the first T-shaped blocks 611 and the sliding rods 62, respectively.

[0028] Specifically, the sleeve rod 63 is connected to the horizontal platform 2. The first T-shaped block 611 slides downward. Under the action of the support rod 61, it drives multiple sliding rods 62 to move away synchronously. When the ends of the sliding rods 62 move away synchronously and come into contact with the inside of the hole, the center of the hole can be conveniently positioned.

[0029] A nut 64 is threadedly connected to the circumference of the sleeve rod 63 and above the first T-shaped block 611. A first T-shaped groove 631 matching the first T-shaped block 611 is opened on the circumference of the sleeve rod 63. A hook 621 is fixedly connected to the lower surface of the sliding rod 62 extending into the base 1. A second T-shaped ring block 632 is fixedly connected to the top of the sleeve rod 63. A second T-shaped ring groove matching the second T-shaped ring block 632 is opened on the lower surface of the horizontal platform 2.

[0030] Specifically, the nut 64 moves downward under the action of the thread, thereby abutting the first T-shaped block 611 and causing the slide rod 62 to slide. A second spring is provided in the first T-shaped groove 631, and the two ends of the second spring are fixedly connected to the first T-shaped groove 631 and the first T-shaped block 611 respectively. When the nut 64 moves upward, it drives the first T-shaped block 611 to move upward automatically.

[0031] The adjustment assembly includes multiple telescopic rods 3, which are rotatably connected to the base 1 via a rotating assembly 7. A connecting rod 21 is provided between the top of the telescopic rod 3 and the horizontal platform 2. The two ends of the connecting rod 21 are rotatably connected to the telescopic rod 3 and the horizontal platform 2, respectively. Multiple adsorption assemblies 12 are fixedly connected to the lower surface of the base 1.

[0032] Specifically, the telescopic rod 3 changes length, and under the action of the connecting rod 21, it drives the horizontal platform 2 to change its tilt angle until it is horizontal. A level is fixedly installed on the upper surface of the horizontal platform 2. The level is existing technology. The level can determine whether the horizontal platform 2 is horizontal. The adsorption component 12 is a magnet.

[0033] The telescopic rod 3 includes a first connecting rod 31 fixedly connected to the rotating assembly 7. A second connecting rod 32 is provided at the top of the first connecting rod 31. The bottom end of the second connecting rod 32 extends into the first connecting rod 31 and is slidably connected thereto. A rack 321 is fixedly connected to the side of the second connecting rod 32. A gear 33 that meshes with the rack 321 is rotatably connected inside the first connecting rod 31. A knob 331 is rotatably connected to the side of the first connecting rod 31. The end of the knob 331 extends into the first connecting rod 31 and is fixedly connected to the gear 33. A fixing bolt 34 is also threadedly connected to the side of the first connecting rod 31. The end of the fixing bolt 34 extends into the first connecting rod 31 and abuts against the second connecting rod 32.

[0034] Specifically, the first link 31 and the second link 32 slide to change the length of the telescopic rod 3. When adjusting the length of the telescopic rod 3, the knob 331 is rotated to drive the gear 33 to rotate. Under the action of the rack 321, the gear 33 drives the second link 32 to slide, thereby changing the length of the telescopic rod 3. After the length of the telescopic rod 3 is adjusted, the fixing bolt 34 is rotated and tightened so that the end of the fixing bolt 34 abuts against the second link 32, thereby fixing the length of the telescopic rod 3.

[0035] The measuring device 5 includes a measuring rod 51. A groove 42 matching the measuring rod 51 is provided on the periphery of the probe rod 4. A tension rod 52 is provided between the upper surface of the measuring rod 51 and the periphery of the probe rod 4. One end of the tension rod 52 is rotatably connected to the measuring rod 51, and the other end of the tension rod 52 is rotatably connected to a second T-shaped block 54. The second T-shaped block 54 is slidably connected to the probe rod 4.

[0036] Specifically, the measuring rod 51 measures the radius of the hole. The point where the measuring rod 51 contacts the inner wall of the hole is the initial point for length calculation. The radius of the hole is reached at the center of the probe rod 4. The measuring rod 51 slides under the contact with the inner wall of the hole. While the measuring rod 51 slides, it moves the second T-shaped block 54 upward under the action of the pulling rod 52.

[0037] The probe rod 4 has a second T-shaped groove 41 on its periphery that matches the second T-shaped block 54. A first spring 53 is provided in the second T-shaped groove 41 to drive the second T-shaped block 54 to slide close to the measuring rod 51. The two ends of the first spring 53 are fixedly connected to the second T-shaped block 54 and the second T-shaped groove 41, respectively.

[0038] Specifically, the second T-shaped block 54 is slidably connected to the probe rod 4 through the second T-shaped groove 41, and the first spring 53 drives the second T-shaped block 54 to move down automatically, so that the end of the measuring rod 51 always touches the inner wall of the hole.

[0039] The rotating assembly 7 includes an annular plate 71, with a first T-shaped ring block 72 fixedly connected to the lower surface of the annular plate 71, and a first T-shaped ring groove 11 matching the first T-shaped ring block 72 is provided on the upper surface of the base 1.

[0040] Specifically, the annular plate 71 is fixedly connected to the telescopic rod 3. When the annular plate 71 rotates, the telescopic rod 3 drives the measuring device 5 to rotate. Under the action of the first T-shaped ring block 72 and the first T-shaped ring groove 11, the annular plate 71 is rotatably connected to the base 1.

[0041] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0042] During operation, simply place the base 1 on the engine cylinder head. The base 1 is magnetically attached to the engine cylinder head. When placed, ensure that all hooks 621 are inside the holes. Then, rotate the nut 64. The nut 64 compresses and moves the first T-shaped block 611 downward. Under the action of the support rod 61, the sliding rod 62 moves away synchronously, causing the hooks 621 to contact the inner wall of the hole. This allows for easy determination of the hole's center position. Subsequently, the rotating assembly 7 drives the measuring device 5 to rotate, performing real-time measurement of the hole's inner wall. During measurement, the radius of the hole can be determined simply by penetrating the center of the probe rod 4.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A special gauge for measuring engine cylinder head holes, characterized in that: Includes a base (1), which is a ring structure; A horizontal platform (2) is provided directly above the center of the base (1), and an adjustment component is rotatably provided on the upper surface of the base (1) to drive the horizontal platform (2) to adjust its tilt. A positioning component (6) is provided between the lower surface of the horizontal platform (2) and the base (1); A probe rod (4) is fixedly connected to the center of the lower surface of the horizontal platform (2) and slidably connected to the through positioning component (6); A measuring device (5) is slidably connected to the circumference of the bottom end of the probe rod (4).

2. The special inspection tool for measuring engine cylinder head holes according to claim 1, characterized in that: The positioning component (6) includes a sleeve rod (63) rotatably connected to the horizontal platform (2). Multiple first T-shaped blocks (611) are slidably connected up and down on the periphery of the sleeve rod (63). Multiple sliding rods (62) are provided around the base (1). The ends of the sliding rods (62) extend into the base (1) and are slidably connected thereto. A support rod (61) is provided between the first T-shaped blocks (611) and the sliding rods (62). The two ends of the support rod (61) are rotatably connected to the first T-shaped blocks (611) and the sliding rods (62) respectively.

3. The special inspection tool for measuring engine cylinder head holes according to claim 2, characterized in that: A nut (64) is threaded onto the periphery of the sleeve rod (63) and above the first T-shaped block (611). A first T-shaped groove (631) matching the first T-shaped block (611) is provided on the periphery of the sleeve rod (63). A hook (621) is fixedly connected to the lower surface of the slide rod (62) extending into the base (1). A second T-shaped ring block (632) is fixedly connected to the top of the sleeve rod (63). A second T-shaped ring groove matching the second T-shaped ring block (632) is provided on the lower surface of the horizontal platform (2).

4. The special inspection tool for measuring engine cylinder head holes according to claim 1, characterized in that: The adjustment assembly includes multiple telescopic rods (3), which are rotatably connected to the base (1) via a rotating assembly (7). A connecting rod (21) is provided between the top of the telescopic rod (3) and the horizontal platform (2). The two ends of the connecting rod (21) are rotatably connected to the telescopic rod (3) and the horizontal platform (2) respectively. Multiple adsorption assemblies (12) are fixedly connected to the lower surface of the base (1).

5. A special inspection tool for measuring engine cylinder head holes according to claim 4, characterized in that: The telescopic rod (3) includes a first connecting rod (31) fixedly connected to the rotating assembly (7). A second connecting rod (32) is provided at the top of the first connecting rod (31). The bottom end of the second connecting rod (32) extends into the first connecting rod (31) and is slidably connected thereto. A rack (321) is fixedly connected to the side of the second connecting rod (32). A gear (33) meshing with the rack (321) is rotatably connected inside the first connecting rod (31). A knob (331) is rotatably connected to the side of the first connecting rod (31). The end of the knob (331) extends into the first connecting rod (31) and is fixedly connected to the gear (33). A fixing bolt (34) is also threadedly connected to the side of the first connecting rod (31). The end of the fixing bolt (34) extends into the first connecting rod (31) and abuts against the second connecting rod (32).

6. The special inspection tool for measuring engine cylinder head holes according to claim 1, characterized in that: The measuring device (5) includes a measuring rod (51). The periphery of the probe rod (4) is provided with a sliding groove (42) that matches the measuring rod (51). A pull rod (52) is provided between the upper surface of the measuring rod (51) and the periphery of the probe rod (4). One end of the pull rod (52) is rotatably connected to the measuring rod (51), and the other end of the pull rod (52) is rotatably connected to a second T-shaped block (54). The second T-shaped block (54) is slidably connected to the probe rod (4).

7. A special inspection tool for measuring engine cylinder head holes according to claim 6, characterized in that: The probe rod (4) has a second T-shaped groove (41) on its periphery that matches the second T-shaped block (54). A first spring (53) is provided in the second T-shaped groove (41) to drive the second T-shaped block (54) to slide close to the measuring rod (51). The two ends of the first spring (53) are fixedly connected to the second T-shaped block (54) and the second T-shaped groove (41) respectively.

8. A special inspection tool for measuring engine cylinder head holes according to claim 5, characterized in that: The rotating assembly (7) includes an annular plate (71), and a first T-shaped ring block (72) is fixedly connected to the lower surface of the annular plate (71). The upper surface of the base (1) is provided with a first T-shaped ring groove (11) that matches the first T-shaped ring block (72).

Images