Crankshaft oil seal journal pin hole center distance testing fixture

Abstract

The utility model relates to the technical field of crankshaft detection tools, and provides a crankshaft oil seal journal pin hole center distance detection tool comprising a machine body, the top of the machine body is provided with a crankshaft, and the top of the machine body is provided with an anti-displacement mechanism. According to the crankshaft clamping device, the connecting shaft, the hollow plate, the threaded rod, the clamping block, the limiting ring, the limiting rod, the connecting spring, the limiting wheel and other assemblies are driven to be matched with one another through rotating force of the handheld grab handle, and when a crankshaft needs to be clamped, a worker pushes the crankshaft to make contact with the limiting wheel fixed to the circumferential face of the limiting rod; at the moment, a worker continuously pushes the crankshaft, so that a limiting wheel rotates and is extruded, meanwhile, a connecting spring fixed to the circumferential face of a limiting rod is in a tightened state, and in the crankshaft detection process, when the crankshaft is influenced by external force and moves, the crankshaft can be rapidly reset to the horizontal state.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of crankshaft inspection tooling technology, and more specifically, to a crankshaft oil seal journal pin hole center distance inspection tool. Background Technology

[0002] In the engine manufacturing process, the crankshaft, as a core component, directly affects the engine's performance and reliability due to its precision. The center distance of the crankshaft oil seal journal pin holes is a critical dimensional parameter in crankshaft machining. A precise center distance ensures a good fit between the oil seal and the journal, effectively preventing lubricating oil leakage, while also guaranteeing the coordination and stability of the various internal engine components during operation.

[0003] According to a publicly disclosed crankshaft oil seal journal pin hole center distance gauge (publication number: CN216845956U), a fixed base is provided with fixing mechanisms on both sides of the top surface of the fixed base. The lower end of the fixing mechanism is engaged with the inner side of the fixed base, and a crankshaft is fixedly engaged with the inner side of the fixing mechanism. An operating screw is sleeved on the lower end of the fixing mechanism. The operating screw is threadedly connected to the fixing mechanism. The operating screw is engaged with the inner side of the fixed base, one end of the operating screw is engaged with the fixed base, and the other end of the operating screw passes through the fixed base.

[0004] In the aforementioned application, when clamping the crankshaft, the fixture is easily affected by external force, causing the crankshaft to shift. When resetting the crankshaft, manual resetting by the operator is required, making it difficult to reset the crankshaft to a horizontal state. This needs to be improved. Therefore, we propose a crankshaft oil seal journal pin hole center distance gauge. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a crankshaft oil seal journal pin hole center distance gauge, which solves the problem in the related art that when the gauge is clamped, the crankshaft is easily displaced by the influence of external force, and when the crankshaft is reset, it is difficult to reset it to a horizontal state by manual reset by the operator.

[0006] According to one aspect, at least one embodiment of this disclosure provides a crankshaft oil seal journal pin hole center distance gauge, including a body, a crankshaft disposed on the top of the body, and an anti-displacement mechanism disposed on the top of the body;

[0007] The anti-displacement mechanism includes a hollow plate, which is fixedly connected to the top of the machine body. A connecting shaft passes through the side of the hollow plate, and a threaded rod is fixedly connected to the circumferential surface of the connecting shaft. A clamping block is threadedly connected to the circumferential surface of the threaded rod. A limit ring is rotatably connected to the side of the clamping block. A limit rod passes through the circumferential surface of the limit ring, and a connecting spring is fixedly connected to the circumferential surface of the limit rod. The end of the connecting spring away from the limit rod is fixedly connected to the circumferential surface of the limit ring.

[0008] For example, in a crankshaft oil seal journal pin hole center distance gauge provided in at least one embodiment of this disclosure, a limiting wheel is fixedly connected to the circumferential surface of the limiting rod, and a hand handle is fixedly connected to the circumferential surface of the connecting shaft. The design of the hand handle facilitates operation by the staff.

[0009] The clamping block is slidably connected to the bottom of the inner wall of the hollow plate. The side section of the hollow plate is set to be concave. One end of the crankshaft is in contact with the side of the clamping block. The above design is beneficial to make the clamping block move linearly at the bottom of the inner wall of the hollow plate when the threaded rod rotates.

[0010] The clamping blocks are configured as two, and are symmetrical to each other along the vertical central axis at the bottom of the hollow plate. The side cross-section of the hand grip is L-shaped. The above design is beneficial for clamping the crankshaft during the crankshaft inspection process and preventing displacement.

[0011] Multiple limiting rods are arranged in a circumferential array on the circumferential surface of the limiting ring. The limiting rods pass through and are slidably connected to the circumferential surface of the limiting ring. When the crankshaft is displaced, it can quickly return the crankshaft to a horizontal state.

[0012] The crankshaft is in contact with the limiting wheel, and the number of connecting springs is set to several, arranged in a circumferential array on the circumferential surface of the limiting ring. The above design is conducive to clamping the crankshaft and facilitates operation by the staff.

[0013] According to another aspect, at least one embodiment of this disclosure also provides a crankshaft oil seal journal pin hole center distance gauge, including a steering mechanism provided on the circumferential surface of the limiting ring, the steering mechanism being connected to a gear, the connecting gear being fixedly connected to the circumferential surface of the limiting ring. The above design is beneficial for operators to rotate the crankshaft when different holes of the crankshaft need to be inspected.

[0014] For example, in a crankshaft oil seal journal pin hole center distance gauge provided in at least one embodiment of this disclosure, a rectangular plate is fixedly connected to the top of the clamping block, a fixed shaft passes through the side of the rectangular plate, a transmission gear is fixedly connected to the circumferential surface of the fixed shaft, and a handle is fixedly connected to the circumferential surface of the transmission gear. The above design is advantageous because when the operator needs to rotate the crankshaft, the operator can simply hold the handle and rotate the transmission gear.

[0015] Both the connecting gear and the transmission gear are set as full gears, and the diameter of the transmission gear is smaller than that of the connecting gear. This design helps to make the crankshaft more stable during operation.

[0016] The transmission gear and the connecting gear mesh with each other, and the ratio of the transmission gear to the connecting gear is 1:2. When the transmission gear rotates, it drives the meshing connecting gear to rotate.

[0017] The beneficial effects of the embodiments disclosed herein are as follows:

[0018] 1. In this utility model, the rotational force of the hand grip drives the connecting shaft, hollow plate, threaded rod, clamping block, limiting ring, limiting rod, connecting spring, limiting wheel and other components to cooperate with each other. When the crankshaft needs to be clamped, the worker pushes the crankshaft to contact the limiting wheel fixed on the circumference of the limiting rod. At this time, the worker continues to push the crankshaft, so that the limiting wheel rotates under the pressure. At the same time, the connecting spring fixed on the circumference of the limiting rod is in a taut state. During the inspection of the crankshaft, when the crankshaft is displaced by external force, the crankshaft can be quickly restored to a horizontal state.

[0019] 2. In this utility model, the rotational force of the handle drives the connecting gear, rectangular plate, transmission gear, fixed shaft and other components to cooperate with each other. When it is necessary to inspect different holes on the surface of the crankshaft, the operator can rotate the handle fixed on the circumference of the fixed shaft, thereby driving the fixed shaft to rotate. The rotation of the fixed shaft drives the transmission gear fixed on the circumference to rotate, and at the same time, the meshing connecting gear is pushed. When the operator inspects different holes on the surface of the crankshaft, it is convenient for the operator to rotate the crankshaft. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0021] Figure 1 This is a structural schematic diagram of the three-dimensional appearance of the present invention from a first-person perspective;

[0022] Figure 2 This is a three-dimensional structural diagram of the hollow block of this utility model.

[0023] Figure 3 This is a three-dimensional structural diagram of the limiting ring of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the limiting wheel of this utility model.

[0025] In the diagram: 1. Body; 2. Crankshaft; 3. Anti-displacement mechanism; 31. Hollow plate; 32. Connecting shaft; 33. Threaded rod; 34. Hand grip; 35. Clamping block; 36. Limiting ring; 37. Limiting rod; 38. Connecting spring; 39. Limiting wheel; 4. Steering mechanism; 41. Connecting gear; 42. Rectangular plate; 43. Transmission gear; 44. Handle; 45. Fixed shaft. Detailed Implementation

[0026] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0027] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0028] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0029] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 disclosure.

[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] like Figures 1-4 As shown, it illustrates a crankshaft oil seal journal pin hole center distance gauge according to an embodiment of the present disclosure, including a body 1, a crankshaft 2 disposed on the top of the body 1, and an anti-displacement mechanism 3 disposed on the top of the body 1.

[0033] The anti-displacement mechanism 3 includes a hollow plate 31, which is fixedly connected to the top of the body 1. A connecting shaft 32 passes through the side of the hollow plate 31. A threaded rod 33 is fixedly connected to the circumferential surface of the connecting shaft 32. A clamping block 35 is threadedly connected to the circumferential surface of the threaded rod 33. A limit ring 36 is rotatably connected to the side of the clamping block 35. A limit rod 37 passes through the circumferential surface of the limit ring 36. A connecting spring 38 is fixedly connected to the circumferential surface of the limit rod 37, and the end of the connecting spring 38 away from the limit rod 37 is fixedly connected to the circumferential surface of the limit ring 36.

[0034] In some examples, the circumferential surface of the limiting rod 37 is fixedly connected to the limiting wheel 39, and the circumferential surface of the connecting shaft 32 is fixedly connected to the hand handle 34, the design of which facilitates operation by the staff.

[0035] The clamping block 35 is slidably connected to the bottom of the inner wall of the hollow plate 31. The side section of the hollow plate 31 is set to be concave. One end of the crankshaft 2 is in contact with the side of the clamping block 35. The above design is beneficial to make the clamping block 35 move linearly at the bottom of the inner wall of the hollow plate 31 when the threaded rod 33 rotates.

[0036] Two clamping blocks 35 are provided and are symmetrical to each other along the vertical central axis of the bottom of the hollow plate 31. The side section of the hand grip 34 is L-shaped. The above design is beneficial to clamp the crankshaft 2 during the inspection process and prevent displacement.

[0037] Multiple limit rods 37 are arranged in a circumferential array on the circumferential surface of the limit ring 36. The limit rods 37 pass through and are slidably connected to the circumferential surface of the limit ring 36. When the crankshaft 2 is displaced, the crankshaft 2 can be quickly reset to a horizontal state.

[0038] The crankshaft 2 is in contact with the limiting wheel 39, and the number of connecting springs 38 is set to several, and they are arranged in a circumferential array on the circumferential surface of the limiting ring 36. The above design is conducive to clamping the crankshaft 2 and is convenient for operators to operate.

[0039] For example, such as Figures 1-4 As shown, when the crankshaft 2 needs to be clamped, the operator pushes the crankshaft 2 to contact the limiting wheel 39 fixed on the circumferential surface of the limiting rod 37. At this time, the operator continues to push the crankshaft 2, causing the limiting wheel 39 to rotate under pressure. At the same time, the connecting spring 38 fixed on the circumferential surface of the limiting rod 37 is in a taut state, thus driving the limiting rod 37 to move. When the crankshaft 2 enters the inner wall of the limiting ring 36 and contacts the side of the clamping block 35, the operator uses the hand grip 34 fixed on the circumferential surface of the connecting shaft 32, thereby driving the connecting shaft 32 to rotate. The rotation of the connecting shaft 32 drives the clamping block 35 to rotate. The threaded rod 33 on the circumferential surface moves, simultaneously causing the two clamping blocks 35 threaded to the circumferential surface to move closer to each other at the bottom of the inner wall of the hollow plate 31. When the other clamping block 35 moves to a certain position, the other end of the crankshaft 2 enters the interior of another limiting ring 36 and contacts the side of the other clamping block 35. Subsequently, when the crankshaft 2 is displaced due to external force, the connecting spring 38 is under the pressure of the crankshaft 2 and is in a taut state, which simultaneously causes the limiting rod 37 to move. When the external force disappears, the connecting spring 38 returns to its original position according to its own elasticity, thereby causing the crankshaft 2 to return to a horizontal state.

[0040] like Figures 1-4 As shown, it illustrates a crankshaft oil seal journal pin hole center distance gauge in another embodiment of this disclosure. It is largely the same as the above-described technical solution, so only the differences are described. The circumferential surface of the limiting ring 36 is provided with a steering mechanism 4, the steering mechanism 4 is connected to a gear 41, and the gear 41 is fixedly connected to the circumferential surface of the limiting ring 36. The above design is beneficial to the operator to rotate the crankshaft 2 when different holes of the crankshaft 2 need to be inspected.

[0041] In some examples, the clamping block 35 is also fixedly connected to a rectangular plate 42, a fixed shaft 45 runs through the side of the rectangular plate 42, a transmission gear 43 is fixedly connected to the circumferential surface of the fixed shaft 45, and a handle 44 is fixedly connected to the circumferential surface of the transmission gear 43. The above design is advantageous because when the operator needs to rotate the crankshaft 2, the operator can simply hold the handle 44 and rotate the transmission gear 43.

[0042] Both the connecting gear 41 and the transmission gear 43 are set as full gears. The diameter of the transmission gear 43 is smaller than that of the connecting gear 41. This design helps to make the crankshaft 2 more stable during operation.

[0043] The transmission gear 43 meshes with the connecting gear 41. The ratio of the transmission gear 43 to the connecting gear 41 is 1:2. When the transmission gear 43 rotates, it drives the meshing connecting gear 41 to rotate.

[0044] For example, such as Figures 1-4 As shown, when it is necessary to inspect different holes on the surface of crankshaft 2, the operator rotates the handle 44 fixed on the circumferential surface of the fixed shaft 45, thereby driving the fixed shaft 45 to rotate. The rotation of the fixed shaft 45 drives the transmission gear 43 fixed on the circumferential surface to rotate, and at the same time, the meshing connecting gear 41 is pushed by the driving force. The driving force of the connecting gear 41 drives the limiting ring 36 on the side of the clamping block 35 to rotate. When the limiting ring 36 rotates, it drives the limiting rod 37, the connecting spring 38, and the limiting wheel 39 to perform circumferential motion, and at the same time drives the crankshaft 2 to rotate, which makes it convenient for the operator to operate on different holes.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications or substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A crankshaft oil seal journal pin hole center distance gauge, characterized in that, Includes a body (1), a crankshaft (2) is provided on the top of the body (1), and an anti-displacement mechanism (3) is provided on the top of the body (1). The anti-displacement mechanism (3) includes a hollow plate (31), which is fixedly connected to the top of the body (1). A connecting shaft (32) passes through the side of the hollow plate (31). A threaded rod (33) is fixedly connected to the circumferential surface of the connecting shaft (32). A clamping block (35) is threadedly connected to the circumferential surface of the threaded rod (33). A limit ring (36) is rotatably connected to the side of the clamping block (35). A limit rod (37) passes through the circumferential surface of the limit ring (36). A connecting spring (38) is fixedly connected to the circumferential surface of the limit rod (37), and one end of the connecting spring (38) away from the limit rod (37) is fixedly connected to the circumferential surface of the limit ring (36).

2. The crankshaft oil seal journal pin hole center distance gauge according to claim 1, characterized in that, The circumferential surface of the limiting rod (37) is fixedly connected to the limiting wheel (39), and the circumferential surface of the connecting shaft (32) is fixedly connected to the hand grip (34).

3. The crankshaft oil seal journal pin hole center distance gauge according to claim 2, characterized in that, The clamping block (35) is slidably connected to the bottom of the inner wall of the hollow plate (31). The side section of the hollow plate (31) is set to be concave. One end of the crankshaft (2) is in contact with the side of the clamping block (35).

4. The crankshaft oil seal journal pin hole center distance gauge according to claim 3, characterized in that, The clamping blocks (35) are configured as two, and are symmetrical to each other along the vertical central axis at the bottom of the hollow plate (31). The side section of the hand grip (34) is configured as L-shaped.

5. A crankshaft oil seal journal pin hole center distance gauge according to claim 4, characterized in that, The limiting rods (37) are configured as a plurality of them and are arranged in a circumferential array on the circumferential surface of the limiting ring (36). The limiting rods (37) pass through and are slidably connected to the circumferential surface of the limiting ring (36).

6. A crankshaft oil seal journal pin hole center distance gauge according to claim 5, characterized in that, The crankshaft (2) is in contact with the limiting wheel (39), and the number of connecting springs (38) is set to several, and they are arranged in a circumferential array on the circumferential surface of the limiting ring (36).

7. A crankshaft oil seal journal pin hole center distance gauge according to claim 6, characterized in that, The circumferential surface of the limiting ring (36) is provided with a steering mechanism (4), which is connected to a gear (41), and the gear (41) is fixedly connected to the circumferential surface of the limiting ring (36).

8. A crankshaft oil seal journal pin hole center distance gauge according to claim 7, characterized in that, A rectangular plate (42) is fixedly connected to the top of the clamping block (35), and a fixed shaft (45) passes through the side of the rectangular plate (42). A transmission gear (43) is fixedly connected to the circumferential surface of the fixed shaft (45), and a handle (44) is fixedly connected to the circumferential surface of the transmission gear (43).

9. A crankshaft oil seal journal pin hole center distance gauge according to claim 8, characterized in that, Both the connecting gear (41) and the transmission gear (43) are configured as full gears, and the diameter of the transmission gear (43) is smaller than the diameter of the connecting gear (41).

10. A crankshaft oil seal journal pin hole center distance gauge according to claim 9, characterized in that, The transmission gear (43) meshes with the connecting gear (41), and the ratio of the transmission gear (43) to the connecting gear (41) is one to two.

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