An internal diameter measuring device for diesel engine cylinder blocks

Abstract

This utility model discloses an inner diameter measuring device for diesel engine cylinder blocks. The device includes a fixed base and a fixing assembly. The fixing assembly is fixedly connected to the top of the fixed base. The fixing assembly includes a mounting plate mounted on the top of the fixed base. Two sliding grooves are formed on the upper surface of the mounting plate. The fixing assembly achieves effective clamping of diesel engine cylinder blocks of different sizes through a reasonable and tight connection between its various parts. The sliding grooves, limit blocks, and positioning threaded assembly allow for flexible adjustment to accommodate cylinder blocks of various sizes. Simultaneously, a ruler is used in conjunction with the measuring assembly for proportional measurement. This reduces the use of complex measuring equipment while meeting measurement requirements, thereby lowering costs. The entire device has a simple structure, is easy to operate, and is convenient for practical use, achieving accurate measurement of diesel engine cylinder blocks of different sizes while balancing cost and practicality.

Description

Technical Field

[0001] This utility model relates to the field of measuring device technology, and in particular to an internal diameter measuring device for diesel engine cylinders. Background Technology

[0002] The world is currently at a critical stage of profound digital technology transformation, with a new generation of information technologies, centered on artificial intelligence, big data, and cloud computing, rapidly permeating all sectors. In terms of computing power, quantum computing prototypes and supercomputing clusters are developing in parallel, providing trillions of computing resources to support complex problems. At the algorithm level, deep learning frameworks are continuously iterating, and large language models are achieving cross-modal understanding and generation, driving AI from specialized to general-purpose applications.

[0003] 5G networks have achieved wide-area coverage, 6G research and development has entered the key technology verification phase, and the prototype of an integrated air-space-ground communication network is gradually emerging. The number of IoT devices has exceeded 10 billion, and the collaborative architecture of edge computing and cloud computing has matured, enabling real-time data processing and intelligent decision-making.

[0004] Blockchain technology has expanded from cryptocurrency applications to areas such as supply chain traceability and digital rights confirmation, with Web3.0 reshaping the value distribution model of the internet. Simultaneously, the concept of green computing is emerging, with low-power chips and optimized computing power scheduling becoming key areas of technological innovation, driving the digital economy towards efficiency, security, and sustainability.

[0005] The existing diesel engine cylinder block bore measuring device has not solved the problem. Therefore, we propose a diesel engine cylinder block bore measuring device. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing an internal diameter measuring device for diesel engine cylinders.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A diesel engine cylinder block inner diameter measuring device includes a fixed base and a fixing assembly. The fixing assembly is fixedly connected to the top of the fixed base. The fixing assembly includes an opening mounting plate, which is installed on the top of the fixed base. The upper surface of the opening mounting plate has two sliding grooves. The lower surface of the inner wall of each of the two sliding grooves has two sets of positioning holes. Two sets of limiting blocks are slidably connected inside the two sliding grooves. The two sets of limiting blocks are fixedly connected inside the two sliding grooves by positioning threads. The upper ends of the two sets of limiting blocks are fixedly connected to two sliding mounting brackets. The upper surface of each of the two sliding mounting brackets has two grooves. The upper ends of the two sliding mounting brackets are movably connected to a fixing strip. The top of the fixing strip is fixedly connected to a support plate. The upper surface of the support plate is fixedly connected to a square frame. The upper surface of the inner wall of the square frame is fixedly connected to a guide tube. The lower end of the guide tube passes through the upper surface of the support plate.

[0009] As a further embodiment of this utility model: a measuring component is fixedly connected to the middle of the upper surface of the square frame, the measuring component includes a fixed sleeve rod, and a zig-shaped frame is fixedly connected to the lower end of the fixed sleeve rod.

[0010] The fixed connection between the square frame and the measuring component provides a stable mounting position for the measuring component, ensuring that it will not shake or shift during measurement. The fixed connection between the fixed sleeve and the Z-shaped frame securely positions the fixed sleeve below the square frame, providing a reliable support structure for subsequent measurement operations in conjunction with other components.

[0011] This connection allows the measuring components to be precisely positioned above the diesel engine cylinder block, laying the foundation for accurate measurement of the cylinder's inner diameter.

[0012] As a further improvement of this utility model: two limiting grooves are fixedly connected to both ends of the zigzag frame, and both limiting grooves are movably connected by a fixed spindle.

[0013] The fixed connection between the Z-shaped bracket and the two limiting grooves determines the position of the limiting grooves within the measuring assembly, providing a direct contact component for inner diameter measurement. The limiting grooves are movably connected via a fixed mandrel, which serves as the rotation axis, allowing the two limiting grooves to rotate around it. This enables flexible adjustment of the limiting groove angles during measurement based on the shape and size of the cylinder inner wall, resulting in better fit to the cylinder inner wall and improved measurement accuracy.

[0014] This movable connection method allows the limiting groove to adapt to the inner wall of the cylinder by adjusting its angle when facing diesel engine cylinder blocks of different specifications, ensuring the reliability of the measurement.

[0015] As a further embodiment of this utility model: two springs are fixedly connected to the two limiting grooves away from the fixed spindle, and two limiting strips are slidably connected to the two springs near the fixed spindle. The opposite ends of the two limiting strips are provided with a slot and a buckle.

[0016] The fixed connection between the limiting groove and the spring provides the power source for the movement of the limiting strip. The sliding connection between the spring and the limiting strip allows the spring to extend and retract, causing the limiting strip to slide within the limiting groove when subjected to external force. The design of the slots and buckles on the limiting strip, through their cooperation, positions and fixes the supporting rotating column, ensuring its secure installation between the limiting strips and guaranteeing the stability of the entire measuring structure.

[0017] The elasticity of the spring allows the limit bar to adaptively adjust according to the actual condition of the cylinder inner wall, further improving the accuracy and stability of the measurement.

[0018] As a further embodiment of this utility model: a supporting rotating column runs through the inside of the slot and the buckle, a collar is fixedly connected to the middle of the upper surface of the supporting rotating column, a first connecting rod is fixedly connected to the upper end of the collar, and a second connecting rod is fixedly connected to the upper end of the first connecting rod by means of a thread.

[0019] The supporting rotating column passes through the slot and buckle, connecting the two limiting strips and providing vertical support for the entire measuring structure. The fixed connection between the supporting rotating column and the collar transmits the column's movement to the collar. The fixed connection between the collar and the first connecting rod further transmits the movement to the first connecting rod. The first and second connecting rods are fixedly connected by threads. By rotating the second connecting rod, the relative position between the first and second connecting rods can be adjusted using the threaded transmission, achieving precise control of the measuring structure's height according to measurement requirements.

[0020] This multi-layer connection structure ensures the stability and adjustability of the measuring structure in the vertical direction, meeting the needs of measuring the inner diameter of cylinders at different depths.

[0021] As a further improvement of this utility model: scales are fixedly connected to the surfaces of both the first connecting rod and the second connecting rod, and a handle is threadedly connected to the upper end of the second connecting rod.

[0022] The first and second connecting rods are fixedly connected to a scale. The scale allows for intuitive reading of the relative positional changes between the two connecting rods, enabling precise measurement of changes in the height of the measuring structure and providing accurate data for calculating the cylinder's inner diameter. The second connecting rod is threaded to a handle. By rotating the handle, the user can easily and precisely control the rotation of the second connecting rod, thereby raising and lowering the first connecting rod and flexibly adjusting the height of the measuring structure according to actual measurement needs.

[0023] The design of the scale and handle makes the measurement process more intuitive and precise, improving the efficiency and accuracy of measurement.

[0024] As a further improvement of this utility model: four support legs are fixedly connected to the four corners of the lower surface of the fixed base, and two handles are fixedly connected to both sides of the fixed base.

[0025] The fixed base is securely connected to four support legs, which in turn support the base, providing stable support for the entire device. This ensures the device remains stable and does not wobble during measurement, guaranteeing accurate results. The fixed base is also securely connected to two handles, allowing users to easily move the device to different measurement locations, increasing its flexibility.

[0026] The design of the support legs and handles enhances the practicality of the device in terms of both stability and portability, meeting the diverse needs of actual production.

[0027] Compared with the prior art, the present invention provides an inner diameter measuring device for diesel engine cylinder blocks, which has the following advantages:

[0028] 1. In this utility model, the top of the fixed base is fixedly connected to the mounting plate, which provides a stable foundation support for the entire fixed assembly. By securely installing the mounting plate on the fixed base, a stable and reliable placement platform is provided for the subsequent installation of various components, ensuring that the measurement accuracy of the entire device is not affected by instability at the bottom during the measurement process.

[0029] Two sliding grooves are provided on the upper surface of the mounting plate to serve as sliding tracks for the limiting block. The limiting block is connected to two sets of positioning holes on the lower surface of the inner wall of the sliding groove via a set of positioning threads. When the limiting block is pushed to slide within the sliding groove, its position can be adjusted according to the size of the diesel engine cylinder block. Through the cooperation of the positioning threads and the positioning holes, the limiting block is precisely positioned in the required location, achieving the purpose of firmly clamping diesel engine cylinder blocks of different sizes and ensuring that the cylinder block does not shift during measurement.

[0030] The upper ends of the two sets of limiting blocks are fixedly connected to two sliding mounting brackets. As the position of the limiting blocks is determined, the position of the sliding mounting brackets is also fixed accordingly. This connection allows the sliding mounting brackets to move with the limiting blocks, enabling the position of the sliding mounting brackets to be adjusted according to the size of the cylinder body. This provides a suitable support position for the upper fixing strip and the bearing plate, thus adapting to the measurement needs of cylinders of different sizes.

[0031] The grooves on the upper surfaces of the two sliding mounting brackets engage with the fixing strips, which are placed on the upper ends of the sliding mounting brackets and connected to the grooves. This connection method ensures that the fixing strips are stably installed on the sliding mounting brackets, providing stable horizontal support for the support plate and the measuring components above, thus guaranteeing the stability of the measuring components during measurement.

[0032] The top of the fixing strip is fixedly connected to the support plate. This connection allows the support plate to be placed securely on the fixing strip, providing vertical stability support for the square frame above the support plate and the entire measuring assembly. This ensures that the measuring assembly will not deviate due to unstable support during the measurement process.

[0033] In summary, the fixing assembly effectively clamps diesel engine cylinder blocks of different sizes through a reasonable and tight connection between its various parts. The combination of sliding grooves, limit blocks, and positioning threaded assemblies allows for flexible adjustment to accommodate cylinder blocks of various sizes. Simultaneously, the measuring assembly, using a ruler for proportional measurements, reduces the need for complex measuring equipment while meeting measurement requirements, thereby lowering costs. The entire device has a simple structure, is easy to operate, and is convenient for practical use, achieving accurate measurement of diesel engine cylinder blocks of different sizes while balancing cost and practicality.

[0034] 2. In this utility model, the four corners of the lower surface of the fixed base are fixedly connected to four support legs. This connection method, with the four support legs evenly distributed on the lower surface of the fixed base, distributes the weight of the device to the ground, achieving the purpose of providing stable support for the entire device. The presence of the support legs allows the device to maintain a stable posture when placed on various ground surfaces, avoiding swaying caused by uneven ground or the device's center of gravity. During the measurement process, stable support ensures that the measuring components can accurately measure the diesel engine cylinder block, without measurement errors caused by device swaying. Through this robust support structure, the stability of the device during measurement is improved, ensuring the accuracy of the measurement results.

[0035] The fixed base is securely connected to two handles on both sides. The handles are designed to provide a comfortable grip for the user. When the device needs to be moved, the user can easily apply force by holding the handles. This connection method effectively transfers the user's force to the device, facilitating its movement. Whether moving the device to different locations within the workshop or transferring it between different work areas, the handles make handling the device easy and convenient. Users can flexibly move the device to suitable measurement locations according to actual needs, improving the flexibility and efficiency of its use.

[0036] In summary, the support legs provide a stable foundation for the device, improving its stability during the measurement process and ensuring accurate and reliable results. The handle, on the other hand, facilitates easy handling and application of force, enhancing the device's flexibility. Together, these two features facilitate transport and improve stability, making this diesel engine cylinder bore measuring device more efficient and practical in real-world applications, meeting the needs for both mobility and stable measurement in various working scenarios.

[0037] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the diesel engine cylinder block inner diameter measuring device proposed in this utility model.

[0039] Figure 2 This is a three-dimensional structural diagram of the mounting plate, slide groove, positioning hole, and limiting block proposed in this utility model;

[0040] Figure 3 This is a three-dimensional structural diagram of the mounting plate, groove, positioning hole, limiting block, and sliding mounting bracket proposed in this utility model.

[0041] Figure 4 This is a three-dimensional structural diagram of the surface of the fixed sleeve rod proposed in this utility model;

[0042] Figure 5 This is a three-dimensional structural diagram of the internal structure of the fixed sleeve rod proposed in this utility model.

[0043] In the diagram: 1. Fixed base; 2. Fixed assembly; 201. Mounting plate; 202. Slide groove; 203. Positioning hole; 204. Limiting block; 205. Sliding mounting bracket; 206. Groove; 207. Fixing strip; 208. Bearing plate; 209. Square frame; 211. Guide tube; 212. Positioning bolt assembly; 3. Measuring assembly; 301. Fixed sleeve rod; 302. Z-shaped frame; 303. Limiting groove; 304. Fixed spindle; 305. Spring; 306. Limiting strip; 307. Slot; 308. Buckle; 309. Supporting rotating column; 311. Collar; 312. First connecting rod; 313. Second connecting rod; 314. Handle; 4. Support leg; 5. Handle. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0045] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] Example: Reference Figures 1 to 4 A diesel engine cylinder block inner diameter measuring device includes a fixed base 1 and a fixing assembly 2. The fixing assembly 2 is fixedly connected to the top of the fixed base 1. The fixing assembly 2 includes an opening mounting plate 201, which is installed on the top of the fixed base 1. The upper surface of the opening mounting plate 201 has two sliding grooves 202. The lower surface of the inner wall of each of the two sliding grooves 202 has two sets of positioning holes 203. Two sets of limiting blocks 204 are slidably connected inside the two sliding grooves 202. The two sets of limiting blocks 204 are fixedly connected to the mounting assembly by positioning threads. Inside the two sliding grooves 202, the upper ends of the two sets of limiting blocks 204 are fixedly connected to two sliding mounting brackets 205. The upper surfaces of the two sliding mounting brackets 205 are each provided with two grooves 206. The upper ends of the two sliding mounting brackets 205 are movably connected to fixing strips 207. The top of the fixing strips 207 is fixedly connected to a bearing plate 208. The upper surface of the bearing plate 208 is fixedly connected to a square frame 209. The upper surface of the inner wall of the square frame 209 is fixedly connected to a guide tube 211. The lower end of the guide tube 211 passes through the upper surface of the bearing plate 208.

[0047] A measuring component 3 is fixedly connected to the middle of the upper surface of the square frame 209. The measuring component 3 includes a fixed sleeve rod 301, and a zig-shaped frame 302 is fixedly connected to the lower end of the fixed sleeve rod 301.

[0048] The two ends of the zigzag frame 302 are fixedly connected to two limiting grooves 303, and both limiting grooves 303 are movably connected by a fixed spindle 304.

[0049] Two springs 305 are fixedly connected to the two limiting grooves 303 away from the fixed spindle 304. Two limiting strips 306 are slidably connected to the two springs 305 near the fixed spindle 304. The two limiting strips 306 have a slot 307 and a buckle 308 at opposite ends.

[0050] A supporting rotating post 309 passes through the inside of the slot 307 and the buckle 308. A collar 311 is fixedly connected to the middle of the upper surface of the supporting rotating post 309. A first connecting rod 312 is fixedly connected to the upper end of the collar 311. A second connecting rod 313 is fixedly connected to the upper end of the first connecting rod 312 by means of a thread.

[0051] A scale is fixedly connected to the surface of both the first connecting rod 312 and the second connecting rod 313, and a handle 314 is threadedly connected to the upper end of the second connecting rod 313.

[0052] In this embodiment, the top of the fixed base 1 is fixedly connected to the mounting plate 201, which provides a stable foundation support for the entire fixed assembly 2. By securely installing the mounting plate 201 on the fixed base 1, a stable and reliable placement platform is provided for the subsequent installation of various components, ensuring that the measurement accuracy of the entire device is not affected by instability at the bottom during the measurement process.

[0053] Two grooves 202 are provided on the upper surface of the mounting plate 201 to provide sliding tracks for the limiting block 204. The limiting block 204 is connected to two sets of positioning holes 203 on the lower surface of the inner wall of the groove 202 via a positioning thread set. When the limiting block 204 is pushed to slide within the groove 202, its position can be adjusted according to the size of the diesel engine cylinder block. Through the cooperation of the positioning thread set and the positioning holes 203, the limiting block 204 is precisely positioned in the required position, achieving the purpose of firmly clamping diesel engine cylinder blocks of different sizes and ensuring that the cylinder block does not shift during measurement.

[0054] The upper ends of the two sets of limiting blocks 204 are fixedly connected to two sliding mounting brackets 205. As the position of the limiting blocks 204 is determined, the position of the sliding mounting brackets 205 is also fixed accordingly. This connection allows the sliding mounting brackets 205 to move with the movement of the limiting blocks 204, realizing the adjustment of the position of the sliding mounting brackets 205 according to the size of the cylinder body, so as to provide a suitable support position for the upper fixing strip 207 and the bearing plate 208, in order to adapt to the measurement needs of cylinder bodies of different sizes.

[0055] The grooves 206 on the upper surface of the two sliding mounting brackets 205 cooperate with the fixing strips 207. The fixing strips 207 are placed on the upper end of the sliding mounting brackets 205 and connected to the grooves 206. Through this connection method, the fixing strips 207 are stably installed on the sliding mounting brackets 205, thereby providing stable horizontal support for the support plate 208 and the measuring component 3 above it, and ensuring the stability of the measuring component 3 during measurement.

[0056] The top of the fixing strip 207 is fixedly connected to the support plate 208. Through this connection, the support plate 208 is stably placed on the fixing strip 207, so as to provide vertical stability support for the square frame 209 above the support plate 208 and the entire measuring component 3, and ensure that the measuring component 3 will not deviate due to unstable support during the measurement process.

[0057] Four support legs 4 are fixedly connected to the four corners of the lower surface of the fixed base 1, and two handles 5 are fixedly connected to both sides of the fixed base 1.

[0058] In this embodiment, the four corners of the lower surface of the fixed base 1 are fixedly connected to four support legs 4. This connection method, with the four support legs 4 evenly distributed on the lower surface of the fixed base 1, distributes the weight of the device to the ground, achieving the purpose of providing stable support for the entire device. The presence of the support legs 4 allows the device to maintain a stable posture when placed on various ground surfaces, avoiding swaying caused by uneven ground or the device's center of gravity. During the measurement process, stable support ensures that the measuring component 3 can accurately measure the diesel engine cylinder block, without measurement errors caused by device swaying. Through this robust support structure, the stability of the device during measurement is improved, ensuring the accuracy of the measurement results.

[0059] The fixed base 1 is fixedly connected to two handles 5 on both sides. The handles 5 are designed to provide users with a convenient grip. When the device needs to be moved, the user can easily apply force by gripping the handles 5. This connection method effectively transfers the user's force to the device, facilitating its handling. Whether moving the device to different locations within the workshop or transferring it between different work areas, the handles 5 make the handling of the device easy and convenient. Users can flexibly move the device to suitable measurement locations according to actual needs, improving the flexibility and efficiency of device use.

[0060] Working principle: The user moves the device to the desired measurement position using the two handles 5 fixedly connected to both sides of the fixed base 1. The handles 5 provide gripping points, allowing for easy movement and precise placement in a convenient operating position. The user then places the diesel engine block on the upper part of the mounting plate 201. The mounting plate 201 provides a platform for the diesel engine block, ensuring its stability and laying the foundation for subsequent measurement operations.

[0061] By pushing two sets of limiting blocks 204, they slide within two grooves 202 on the upper surface of the mounting plate 201. The sliding connection design between the limiting blocks 204 and the grooves 202 allows for flexible movement of the limiting blocks 204 within the grooves 202, enabling adjustment of the position of the limiting blocks 204 according to the dimensions of the diesel engine cylinder block. Once the limiting blocks 204 have moved to the appropriate position and clamped the left and right sides of the diesel engine cylinder block, they are fixed in place at the positioning holes 203 inside the grooves 202 using a positioning thread assembly. The precise positioning of the limiting blocks 204 is achieved through the cooperation of the positioning thread assembly and the positioning holes 203, ensuring a secure fixation of the diesel engine cylinder block and preventing displacement during measurement.

[0062] Two sliding mounting brackets 205 are respectively fixed to the upper ends of two sets of limiting blocks 204, and their positions are determined as the limiting blocks 204 are fixed. Two grooves 206 formed on the upper surface of the sliding mounting brackets 205 provide a positioning structure for the installation of the fixing strip 207. The fixing strip 207 is placed on the upper ends of the two sliding mounting brackets 205, engaging with the grooves 206, thus achieving initial positioning of the fixing strip 207. This connection method achieves the purpose of providing stable support for the bearing plate 208 and the measuring assembly 3 above it.

[0063] The support plate 208 is fixed to the top of the fixing strip 207, providing a support base for the square frame 209 and other measuring components above. A guide tube 211 is fixedly connected to the upper surface of the inner wall of the square frame 209, with its lower end penetrating the upper surface of the support plate 208, providing a guide channel for the subsequent insertion of the fixing sleeve 301. The U-shaped bracket 302 at the lower end of the fixing sleeve 301 is fixedly connected to the middle of the upper surface of the square frame 209, achieving the initial installation and positioning of the measuring component 3. This connection ensures a stable connection between the measuring component 3 and the fixing structure below, guaranteeing the overall stability of the component during measurement.

[0064] The two ends of the Z-shaped frame 302 are movably connected to two limiting grooves 303 via a fixed spindle 304. This connection allows the two limiting grooves 303 to rotate around the fixed spindle 304, enabling subsequent unfolding and retraction. Two springs 305 are fixedly connected to the ends of the two limiting grooves 303 away from the fixed spindle 304, and two limiting strips 306 are slidably connected to the ends of the springs 305 near the fixed spindle 304. A supporting rotating column 309 passes through the slots 307 and buckles 308 on opposite ends of the limiting strips 306. Through this structural design, the extension and retraction of the springs 305 can drive the limiting strips 306 to slide within the limiting grooves 303, while the supporting rotating column 309 serves a positioning and connecting function, achieving stable support for the limiting strips 306 and the entire measuring structure, and enabling flexible adjustment of the measuring structure according to actual needs during the measurement process.

[0065] A collar 311, fixedly connected to the middle of the upper surface of the supporting rotating column 309, is fixedly connected to the lower end of the first connecting rod 312. The upper end of the first connecting rod 312 is fixedly connected to the second connecting rod 313 by threads. This threaded connection allows the first connecting rod 312 and the second connecting rod 313 to rotate relative to each other, thereby adjusting the distance between them. The upper end of the second connecting rod 313 is connected to a handle 314 by threads. By rotating the handle 314, the user can precisely control the distance between the first connecting rod 312 and the second connecting rod 313, thereby driving the collar 311, the supporting rotating column 309, and the entire connected measuring structure to move up and down, achieving the purpose of adjusting the height of the measuring structure according to measurement needs.

[0066] After installation, the user rotates handle 314, causing the first connecting rod 312 and the second connecting rod 313 to descend. A scale is fixedly connected to the surface of both the first connecting rod 312 and the second connecting rod 313, displaying the positional change of the measuring structure as they descend. By observing the scale markings, the user can accurately read the descent height of the measuring structure, achieving the goal of precisely locating the measurement position according to measurement requirements.

[0067] During the descent of the first connecting rod 312 and the second connecting rod 313, the collar 311, the support rotating column 309, and the two limiting grooves 303 descend together. When the two limiting grooves 303 descend to contact the inner walls of the diesel engine cylinder, the handle 314 is rotated further. The resistance of the inner walls of the cylinder causes the two limiting grooves 303 to compress the spring 305 via the limiting strip 306. The compression of the spring 305 causes the two limiting grooves 303 to expand around the fixed spindle 304, further conforming to the inner walls of the cylinder. Through the elastic action of the spring 305 and the rotational structure of the limiting grooves 303, the measuring structure is tightly fitted to the inner walls of the cylinder, achieving the purpose of accurately measuring the distance between the two sides of the inner walls of the cylinder.

[0068] During the measurement process, the positional change of the measuring structure during the unfolding of the limiting groove 303 is read by observing the scale on the surface of the first connecting rod 312 and the second connecting rod 313. Using the scale on the scale and a pre-set magnification ratio, the distance between the two sides of the cylinder inner wall is accurately measured. This design achieves the goal of accurately obtaining the inner diameter of the diesel engine cylinder block, meeting the measurement needs in actual production.

[0069] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for measuring the internal diameter of a diesel engine cylinder, comprising a fixed base (1) and a fixed assembly (2), characterised in that: A fixing component (2) is fixedly connected to the top of the fixed base (1). The fixing component (2) includes an opening mounting plate (201), which is installed on the top of the fixed base (1). Two sliding grooves (202) are opened on the upper surface of the opening mounting plate (201). Two sets of positioning holes (203) are opened on the lower surface of the inner wall of each of the two sliding grooves (202). Two sets of limiting blocks (204) are slidably connected inside the two sliding grooves (202). The two sets of limiting blocks (204) are fixedly connected inside the two sliding grooves (202) by positioning thread sets. Two sliding mounting brackets (205) are fixedly connected to the upper end of the position block (204). Two grooves (206) are opened on the upper surface of each of the two sliding mounting brackets (205). A fixing strip (207) is movably connected to the upper end of the two sliding mounting brackets (205). A bearing plate (208) is fixedly connected to the top of the fixing strip (207). A square frame (209) is fixedly connected to the upper surface of the bearing plate (208). A guide tube (211) is fixedly connected to the upper surface of the inner wall of the square frame (209). The lower end of the guide tube (211) passes through the upper surface of the bearing plate (208).

2. The bore measuring device for a diesel engine cylinder block according to claim 1, characterized by: A measuring component (3) is fixedly connected to the middle of the upper surface of the square frame (209). The measuring component (3) includes a fixed sleeve rod (301), and a zig frame (302) is fixedly connected to the lower end of the fixed sleeve rod (301).

3. A bore measuring device for a diesel engine cylinder as defined in claim 2, characterized in that: The two ends of the frame (302) are fixedly connected to two limiting grooves (303), and the two limiting grooves (303) are movably connected by a fixed spindle (304).

4. The bore measuring device for a diesel engine cylinder block according to claim 3, characterized by: Two springs (305) are fixedly connected to the two limiting grooves (303) away from the fixed spindle (304), and two limiting strips (306) are slidably connected to the two springs (305) near the fixed spindle (304). The two limiting strips (306) have a slot (307) and a buckle (308) at opposite ends.

5. A bore measuring device for a diesel engine cylinder as defined in claim 4, characterized in that: A support rotating post (309) runs through the inside of the slot (307) and the buckle (308). A collar (311) is fixedly connected to the middle of the upper surface of the support rotating post (309). A first connecting rod (312) is fixedly connected to the upper end of the collar (311). A second connecting rod (313) is fixedly connected to the upper end of the first connecting rod (312) by means of a thread.

6. A bore measuring device for a diesel engine cylinder as defined in claim 5, characterized in that: The surfaces of the first connecting rod (312) and the second connecting rod (313) are both fixedly connected with scales, and the upper end of the second connecting rod (313) is connected with a handle (314) by thread.

7. The bore measuring device for a diesel engine cylinder as set forth in claim 1, characterized by: The fixed base (1) has four supporting legs (4) fixedly connected to the four corners of its lower surface, and two handles (5) fixedly connected to both sides of the fixed base (1).

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