Crankshaft external diameter detection device

Abstract

The utility model discloses a crankshaft external diameter detection device, which belongs to the technical field of crankshaft detection, and comprises a QFB float-type air gauge and a detection table, one side of the QFB float-type air gauge is provided with a breather pipe, one end of the breather pipe is connected with a measuring head, the upper surface of the detection table is provided with a sliding chute, and the upper surface of the detection table is provided with an air outlet. An I-shaped pedestal is slidably connected in the sliding groove, one end of the I-shaped pedestal is fixedly connected with a connection block, one side of the connection block is fixedly connected with a threaded rod, the outer circumferential surface of the threaded rod is in threaded connection with a pair of nuts, the lower end of the measuring head is fixedly connected with a through block, the through block sleeves the outer circumferential surface of the threaded rod, and the pair of nuts are clamped on the two sides of the through block. After each measuring head is adjusted, the crankshaft can be directly placed on the measuring heads, the plurality of measuring heads cooperate with the breather pipe and the QFB float type pneumatic gauge to detect the journal of the crankshaft at the same time, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft detection, and more specifically, to a device for detecting the outer diameter of a crankshaft. Background Art

[0002] After the crankshaft is produced, it is often necessary to measure the outer diameter of each journal to ensure the qualified rate of the finished crankshaft.

[0003] For example, the authorized publication number CN220104027U, a device for detecting the outer diameter of a crankshaft, includes a workbench, support plates are arranged on the left and right sides of the top surface thereof, first oil cylinders are arranged on the upper parts of the two support plates, the piston rods of the two first oil cylinders are arranged oppositely and fixedly connected with a clamping disc, a bottom plate is slidably arranged left and right on the workbench between the two support plates, second oil cylinders are arranged on the front and rear ends of the top surface of the bottom plate, the piston rods of the two second oil cylinders face upward and are fixedly connected with a mounting plate, third oil cylinders are arranged on the two mounting plates, the piston rods of the two third oil cylinders are arranged oppositely and fixedly connected with a measuring head, the longitudinal sections of the two measuring heads are in a semi-circular ring shape and the inner rings thereof are arranged oppositely, air outlet channels are radially arranged on the upper and lower sides of the two measuring heads, a pneumatic measuring instrument body is arranged on the workbench, and the air outlet channels are communicated with the air outlet end of the pneumatic measuring instrument body through a conveying hose, which can quickly position and clamp the crankshaft and perform flexible, fast and accurate pneumatic measurement on the outer diameter of each journal, ensuring the measurement efficiency and quality. However, the following drawbacks exist in the use process of this detection device:

[0004] When the above detection device detects the journal of the crankshaft, since there are multiple journals on one crankshaft, during the detection process, it is necessary to detect the journals of the crankshaft in sequence, and its detection efficiency is still relatively slow. Therefore, the utility model provides a device for detecting the outer diameter of a crankshaft. Content of the Utility Model

[0005] 1. Technical Problems to be Solved

[0006] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a device for detecting the outer diameter of a crankshaft, which solves the problem that when the detection device in the prior art detects the journal of the crankshaft, since there are multiple journals on one crankshaft, during the detection process, it is necessary to detect the journals of the crankshaft in sequence, and its detection efficiency is still relatively slow.

[0007] 2. Technical Solutions

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A device for detecting the outer diameter of a crankshaft includes a QFB floating pneumatic gauge and a detection table. A ventilation pipe is arranged on one side of the QFB floating pneumatic gauge, and one end of the ventilation pipe is connected with a measuring head;

[0010] A chute is formed on the upper surface of the inspection table. An I-shaped pedestal is slidably connected in the chute. One end of the I-shaped pedestal is fixedly connected with an adapter block. One side of the adapter block is fixedly connected with a threaded rod. A pair of nuts are threadedly connected to the outer circumferential surface of the threaded rod. The lower end of the measuring head is fixedly connected with a through-block. The through-block is sleeved on the outer circumferential surface of the threaded rod. The pair of nuts are clamped on both sides of the through-block;

[0011] An adapter bar is fixedly connected to the upper end of the inspection table. An L-shaped connection block is fixedly connected to one side of the adapter block. The L-shaped connection block and the adapter block cooperate to clamp both sides of the adapter bar. A first threaded rod (55) penetrates and is threadedly connected to one side of the L-shaped connection block.

[0012] Furthermore, docking blocks are fixedly connected to both sides of the inspection table. A T-shaped docking groove is formed in the upper end of the docking block. An I-shaped block can be embedded in the interior after the two T-shaped docking grooves are docked with each other.

[0013] Furthermore, a stress block is fixedly connected to the upper end of the I-shaped block. Anti-slip patterns are provided on both sides of the stress block.

[0014] Furthermore, feet are fixedly connected to the lower corners of the inspection table.

[0015] Furthermore, a rubber layer is fixedly connected to the lower end of the foot.

[0016] . Beneficial effects

[0017] Compared with the prior art, the advantages of the present utility model are as follows:

[0018] This solution adopts a QFB buoy type pneumatic gauge. The pneumatic gauge can simultaneously detect four journal positions at one time. During specific operation, first, move the I-shaped pedestal on the inspection table horizontally according to the horizontal distance between the journal positions. During the horizontal movement of the I-shaped pedestal, the measuring head can be driven to adjust its position, so that the measuring head is horizontally corresponding to the journal position. After the horizontal correspondence, rotate the threaded rod. After the threaded rod abuts against the adapter bar, the I-shaped pedestal can be limited, ensuring the stability of the measuring head in the horizontal direction. Subsequently, move the through-block. The through-block can drive the measuring head to perform longitudinal adjustment, so that the measuring head is longitudinally corresponding to the journal position. After the longitudinal correspondence, tighten the nuts. After the pair of nuts are clamped on both sides of the through-block, the measuring head can be longitudinally limited. After each measuring head is adjusted, the crankshaft can be directly placed on the measuring head. Multiple measuring heads cooperate with the ventilation pipe and the QFB buoy type pneumatic gauge to simultaneously detect the journal positions of the crankshaft, greatly improving the detection efficiency.

[0019] When the crankshaft is relatively long and there are many journal positions, and four measuring heads cannot meet the synchronous detection requirements, two or more QFB buoy-type pneumatic gauges can be set. The two detection tables can be spliced and extended through docking blocks and I-shaped blocks to further meet the user's usage requirements. Brief Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the splicing state of the detection table of the present utility model;

[0022] Figure 3 For the present utility model Figure 2 is an enlarged schematic structural diagram of part A in;

[0023] Figure 4 is a schematic structural diagram of the I-shaped pedestal of the present utility model.

[0024] Description of the reference numerals in the drawings:

[0025] 1. QFB buoy-type pneumatic gauge; 2. Vent pipe; 3. Measuring head; 4. Detection table; 41. Slide groove; 42. Docking block; 421. T-shaped docking groove; 43. I-shaped block; 431. Force-bearing block; 44. Support leg; 441. Rubber layer; 5. I-shaped pedestal; 51. Connecting block; 52. Threaded rod; 53. Nut; 54. L-shaped connecting block; 55. First threaded rod; 6. Connecting strip. Detailed Embodiment

[0026] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0027] Embodiment

[0028] As Figures 1-4 shown, a crankshaft outer diameter detection device includes a QFB buoy-type pneumatic gauge 1 and a detection table 4. A vent pipe 2 is arranged on one side of the QFB buoy-type pneumatic gauge 1, and a measuring head 3 is connected to one end of the vent pipe 2;

[0029] A slide groove 41 is opened on the upper surface of the detection table 4. An I-shaped pedestal 5 is slidably connected in the slide groove 41. One end of the I-shaped pedestal 5 is fixedly connected with a connecting block 51. One side of the connecting block 51 is fixedly connected with a threaded rod 52. A pair of nuts 53 are threadedly connected to the outer circumferential surface of the threaded rod 52. The lower end of the measuring head 3 is fixedly connected with a through-block 31. The through-block 31 is sleeved on the outer circumferential surface of the threaded rod 52. The pair of nuts 53 are clamped on both sides of the through-block 31;

[0030] A connecting bar 6 is fixedly connected to the upper end of the inspection table 4. An L-shaped connecting block 54 is fixedly connected to one side of the connecting block 51. The L-shaped connecting block 54 and the connecting block 51 are clamped on both sides of the connecting bar 6, and a first threaded rod 55 penetrates through and is threadedly connected to one side of the L-shaped connecting block 54.

[0031] During use, the QFB floating-buoy pneumatic gauge 1 is adopted. This pneumatic gauge can simultaneously detect four journal positions at one time. During specific operation, first, move the I-shaped pedestal 5 on the inspection table 4 horizontally according to the horizontal distance between the journal positions. During the horizontal movement of the I-shaped pedestal 5, the measuring head 3 can be driven to adjust its position, so that the measuring head 3 is horizontally corresponding to the journal position. After the horizontal correspondence, rotate the first threaded rod 55. After the first threaded rod 55 abuts against the connecting bar 6, the I-shaped pedestal 5 can be limited, ensuring the stability of the measuring head 3 in the horizontal direction. Subsequently, move the through-block 31. The through-block 31 can drive the measuring head 3 to perform longitudinal adjustment, so that the measuring head 3 is longitudinally corresponding to the journal position. After the longitudinal correspondence, tighten the nuts 53. After a pair of nuts 53 clamp on both sides of the through-block 31, the measuring head 3 can be longitudinally limited. After all the measuring heads 3 are adjusted, the crankshaft can be directly placed on the measuring heads 3. Multiple measuring heads 3, in cooperation with the ventilation pipe 2 and the QFB floating-buoy pneumatic gauge 1, can simultaneously detect the journal positions of the crankshaft, greatly improving the detection efficiency.

[0032] The specific process and principle of the QFB floating-buoy pneumatic gauge 1 and the external diameter pneumatic measurement both belong to the prior art and will not be elaborated here.

[0033] As Figures 1-3 shown, docking blocks 42 are fixedly connected to both sides of the inspection table 4. A T-shaped docking groove 421 is opened at the upper end of the docking block 42. After the two T-shaped docking grooves 421 are docked, a I-shaped block 43 can be embedded in their interior.

[0034] During use, when the crankshaft is long and there are many journal positions, and four measuring heads 3 cannot meet the synchronous detection requirements, two or more QFB floating-buoy pneumatic gauges 1 can be set. The two inspection tables 4 can be spliced and extended through the docking blocks 42 and the I-shaped blocks 43 to further meet the user's usage requirements.

[0035] As Figure 3 shown, a stress block 431 is fixedly connected to the upper end of the I-shaped block 43. Anti-slip lines are provided on both sides of the stress block 431.

[0036] During use, through the stress block 431 with anti-slip lines, it is convenient for personnel to pull out the I-shaped block 43 upward.

[0037] As Figures 1-2 shown, support feet 44 are fixedly connected to the lower end corners of the inspection table 4.

[0038] In use, through the support feet 44, a certain distance is provided between the detection table 4 and the placement tabletop. Part of the ventilation pipe 2 can be routed under the detection table 4 to avoid excessive ventilation pipes 2 above the detection table 4, which may affect the placement of the crankshaft.

[0039] As Figures 1-2 shown, a rubber layer 441 is fixedly connected to the lower end of the support foot 44.

[0040] In use, through the rubber layer 441, the friction between the support foot 44 and the placement tabletop is increased, so that the detection table 4 is not easily slid on the tabletop during use, improving its stability.

[0041] In summary, the specific working process of this solution is as follows: The QFB floating - type pneumatic gauge 1 is adopted. This pneumatic gauge can simultaneously detect four journal positions at one time. During specific operation, first, according to the horizontal distance between the journal positions, horizontally move the I - shaped pedestal 5 on the detection table 4. During the horizontal movement of the I - shaped pedestal 5, it can drive the measuring head 3 to adjust its position, so that the measuring head 3 is horizontally corresponding to the journal position. After the horizontal correspondence, rotate the first threaded rod 55. After the first threaded rod 55 abuts against the connecting strip 6, it can limit the position of the I - shaped pedestal 5 to ensure the stability of the measuring head 3 in the horizontal direction. Subsequently, move the through - core block 31. The through - core block 31 can drive the measuring head 3 to perform longitudinal adjustment, so that the measuring head 3 is longitudinally corresponding to the journal position. After the longitudinal correspondence, tighten the nuts 53. After a pair of nuts 53 clamp on both sides of the through - core block 31, they can limit the position of the measuring head 3 longitudinally. After all the measuring heads 3 are adjusted, the crankshaft can be directly placed on the measuring heads 3. Multiple measuring heads 3, in cooperation with the ventilation pipe 2 and the QFB floating - type pneumatic gauge 1, can simultaneously detect the journal positions of the crankshaft, greatly improving the detection efficiency;

[0042] Among them, the specific process and principle of the QFB floating - type pneumatic gauge 1 and the external - diameter pneumatic measurement both belong to the prior art and will not be elaborated here.

[0043] The above - mentioned is only the preferred specific implementation manner of the present utility model; however, the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its improved concept, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A crankshaft outer diameter detection device, comprising a QFB buoyancy pneumatic gauge (1) and a detection table (4), characterized in that: One side of the QFB buoy type pneumatic gauge (1) is provided with an air pipe (2), and one end of the air pipe (2) is connected with a measuring head (3). A chute (41) is formed on the upper surface of the inspection table (4). An I-shaped pedestal (5) is slidably connected in the chute (41). One end of the I-shaped pedestal (5) is fixedly connected with an adapter block (51). One side of the adapter block (51) is fixedly connected with a threaded rod (52). A pair of nuts (53) are threadedly connected to the outer circumferential surface of the threaded rod (52). The lower end of the measuring head (3) is fixedly connected with a through-block (31). The through-block (31) is sleeved on the outer circumferential surface of the threaded rod (52). The pair of nuts (53) are clamped on both sides of the through-block (31). An adapter bar (6) is fixedly connected to the upper end of the inspection table (4). An L-shaped connecting block (54) is fixedly connected to one side of the adapter block (51). The L-shaped connecting block (54) and the adapter block (51) cooperate to clamp both sides of the adapter bar (6). A first threaded rod (55) penetrates and is threadedly connected to one side of the L-shaped connecting block (54).

2. The crankshaft outer diameter detection device according to claim 1, characterized in that: Docking blocks (42) are fixedly connected to both sides of the inspection table (4). A T-shaped docking groove (421) is formed at the upper end of the docking block (42). An I-shaped block (43) can be embedded in the interior after the two T-shaped docking grooves (421) are docked with each other.

3. The crankshaft outer diameter detection device according to claim 2, characterized in that: A stress block (431) is fixedly connected to the upper end of the I-shaped block (43). Anti-slip patterns are provided on both sides of the stress block (431).

4. A crankshaft outer diameter detection device according to claim 1, characterized in that: Support feet (44) are fixedly connected to the lower corners of the inspection table (4).

5. An outer diameter detection device for a crankshaft according to claim 4, characterized in that: A rubber layer (441) is fixedly connected to the lower end of the support foot (44).

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