Crankshaft testing fixture

Abstract

The utility model belongs to the technical field of crankshaft detection, and particularly relates to a crankshaft detection tool which comprises a base, a sliding groove is formed in the base in the length direction of the base, and a second sliding rail assembly is arranged in the sliding groove. The two supporting plates are oppositely arranged; the first supporting plate is fixedly connected to the base, the second supporting plate is connected to the second sliding rail assembly, a clamping mechanism used for clamping the end of the crankshaft is connected to the first supporting plate, and a shaft through hole used for containing and supporting the end of the crankshaft is formed in the second supporting plate; the first sliding rail assembly is arranged beside the supporting plate, a supporting assembly is connected to the first sliding rail assembly in a sliding mode, a measuring meter is connected to the supporting assembly, and the crankshaft clamped between the first supporting plate and the second supporting plate is detected.

Description

Technical Field

[0001] The utility model belongs to the technical field of crankshaft detection, and specifically relates to a crankshaft detection tool. Background Art

[0002] The crankshaft is the most important part of the engine. It bears the force from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine to work. After production and processing, it often needs to be measured using a gauge.

[0003] In the prior art, a Chinese patent with application number CN202321774523.2 provides a crankshaft inspection fixture, including a base, one side of the base is fixedly connected to a fixed plate, one side of the fixed plate is rotatably provided with a circular plate in a left-right axial direction, one side of the circular plate is provided with two V-shaped clamps that are symmetrical up and down and can move in opposite directions, one side of the base is provided with a longitudinal movable rod that slides along its length, and the front of the movable rod is provided with a measuring gauge that can be raised and lowered with the detection end facing downward. The utility model can place one end of the crank to be inspected between the two V-shaped clamps, and one end of the crank can be clamped and fixed by moving the two V-shaped clamps toward each other, and then the measuring gauge is lowered so that its detection end can contact the surface of the crank, thereby achieving the purpose of inspecting the crank.

[0004] However, in the above design, only one side of the base is provided with a fixing plate, and a clamping mechanism is provided on the fixing plate to clamp and fix the crankshaft. Since the crankshaft has a certain weight and length, it is difficult to ensure the stability of the crankshaft when clamping the crankshaft by the clamping mechanism on one side alone. At the same time, the lack of support also increases the difficulty of installing the crankshaft between the two V-shaped clamps. For this reason, an improved crankshaft inspection fixture is designed. Utility Model Content

[0005] In view of the above-mentioned deficiencies existing in the prior art, the utility model provides a crankshaft inspection fixture to solve the above-mentioned problems in the background technology.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A crankshaft inspection fixture comprises a base, wherein a slide groove is provided on the base along the length direction thereof, and a second slide rail assembly is arranged in the slide groove;

[0008] Two supporting plates arranged opposite to each other; a first supporting plate and a second supporting plate, wherein the first supporting plate is fixedly connected to the base, and the second supporting plate is connected to the second slide rail assembly, a clamping mechanism for clamping the end of the crankshaft is connected to the first supporting plate, and a shaft through hole for accommodating and supporting the end of the crankshaft is opened on the second supporting plate;

[0009] A first slide rail assembly is arranged beside the support plate, the first slide rail assembly is slidably connected to a support assembly, and the support assembly is connected to a measuring meter to detect the crankshaft clamped between the first support plate and the second support plate.

[0010] By adopting the above structural design, the crankshaft inspection fixture is provided with two oppositely arranged first support plates and second support plates, wherein the first support plate is fixedly connected to the base, and the second support plate is slidably arranged relative to the first support plate, so as to facilitate adjustment of the distance between the two support plates to adapt to the placement of crankshafts of different lengths; a clamping mechanism is arranged on the first support plate, and an axis through hole is arranged on the second support plate. When in use, one end of the crankshaft is placed in the axis through hole, and the other end is clamped by the clamping mechanism to prevent the crankshaft from rotating. The measuring meter is connected to the second slide rail assembly through the support assembly, and the first slide rail assembly and the second slide rail assembly are arranged in parallel. The measuring meter can be moved parallel to the crankshaft under the push of an external force, and the crankshaft can be inspected.

[0011] Furthermore, the clamping mechanism comprises: a bottom plate and a U-shaped block, wherein the bottom plate and the first support plate are fixedly connected, two connecting seats are oppositely arranged on the bottom plate, and two ends of the U-shaped block are respectively connected to the two connecting seats;

[0012] Two V-shaped clamps are arranged opposite to each other; a first V-shaped clamp and a second V-shaped clamp, wherein the first V-shaped clamp is fixedly arranged between the two connecting seats, and the second V-shaped clamp is slidably arranged inside the U-shaped block, and a driving member for driving the second V-shaped clamp to slide is also arranged on the top of the U-shaped block.

[0013] Furthermore, the driving member includes a threaded barrel passing through the top of the U-shaped block, a top block fixedly connected to the second V-shaped clamping block, and a threaded rod threadedly connected to the inside of the threaded barrel, one end of the threaded rod is rotatably connected to the top block, and the other end is provided with a rotating rod.

[0014] By adopting the above-mentioned structural design, the clamping mechanism is provided with two V-shaped clamps, a first V-shaped clamp and a second V-shaped clamp, wherein the first V-shaped clamp is arranged below the second V-shaped clamp, and the size of the first V-shaped clamp is larger than the second V-shaped clamp. When in use, the end of the crankshaft is placed on the first V-shaped clamp, and the threaded rod is driven to rotate and lift by rotating the rotating rod. The threaded rod moves against the second V-shaped clamp to move closer to or away from the first V-shaped clamp, thereby clamping the crankshaft. The first V-shaped clamp and the second V-shaped clamp are both provided with tooth grooves, which can further prevent the crankshaft from rotating.

[0015] Furthermore, guide strips are provided on the two inner walls of the U-shaped block, and notches matching the guide strips are provided on both sides of the top block.

[0016] Furthermore, the first V-shaped clamping block and the second V-shaped clamping block are both provided with tooth grooves.

[0017] Further, the support assembly includes:

[0018] A connecting plate, the connecting plate is fixedly connected to the slider of the first slide rail assembly, a supporting block is arranged on the connecting plate, and two through holes are opened on the top of the supporting block;

[0019] A mounting block, wherein the bottom of the mounting block is connected to two support rods located in the through holes, the upper part of the mounting block is connected to a mounting rod, and the measuring meter is fixedly connected to the mounting rod;

[0020] The jacking mechanism is arranged on the back of the supporting block and is connected with the mounting block to drive the mounting block to rise and fall.

[0021] Furthermore, a partition parallel to the slide rail of the first slide rail assembly is arranged below the connecting plate, and an end plate is also connected to the back of the connecting plate, the end plate is close to the partition, and a locking bolt that can press against the partition is arranged on the end plate.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. The crankshaft inspection fixture is provided with a first support plate and a second support plate which are arranged opposite to each other, wherein the first support plate is fixedly connected to the base, and the second support plate is slidably arranged relative to the first support plate, so as to facilitate adjustment of the distance between the two support plates to accommodate the placement of crankshafts of different lengths; a clamping mechanism is arranged on the first support plate, and an axial through hole is arranged on the second support plate. When in use, one end of the crankshaft is placed in the axial through hole, and the other end is clamped by the clamping mechanism to prevent the crankshaft from rotating. The measuring meter is connected to the second slide rail assembly through the supporting assembly, and the first slide rail assembly and the second slide rail assembly are arranged in parallel, so that the measuring meter can be moved parallel to the crankshaft under the push of an external force, and the crankshaft can be inspected;

[0024] 2. The clamping mechanism is provided with two V-shaped clamps, a first V-shaped clamp and a second V-shaped clamp, wherein the first V-shaped clamp is arranged below the second V-shaped clamp, and the size of the first V-shaped clamp is larger than the second V-shaped clamp. When in use, the end of the crankshaft is placed on the first V-shaped clamp, and the threaded rod is driven to rotate and lift by rotating the rotary rod. The threaded rod moves against the second V-shaped clamp to move closer to or away from the first V-shaped clamp, thereby clamping the crankshaft. The first V-shaped clamp and the second V-shaped clamp are both provided with tooth grooves, which can further prevent the crankshaft from rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of a crankshaft inspection fixture of the utility model (viewing angle 1);

[0026] Figure 2 This is a three-dimensional structural schematic diagram of an embodiment of a crankshaft inspection fixture of the utility model (viewing angle 2);

[0027] Figure 3 This is a three-dimensional structural schematic diagram of a clamping mechanism in an embodiment of a crankshaft inspection fixture of the utility model (viewing angle 1);

[0028] Figure 4 This is a three-dimensional structural schematic diagram of a clamping mechanism in an embodiment of a crankshaft inspection fixture of the utility model (viewing angle 2);

[0029] The reference numerals in the drawings of the specification include:

[0030] A base (1), a slide groove (11), a partition (12), a first support plate (2), a second support plate (3), an axial through hole (31), a clamping mechanism (4), a bottom plate (41), a connecting seat (411), a convex block (412), a U-shaped block (42), a guide strip (421), a threaded cylinder (422), a locking hook (43), a first V-shaped clamping block (44), a second V-shaped clamping block (45), a driving member (46), a top block (461), a notch (4611), a threaded rod (462), a rotating rod (463), a first slide rail assembly (5), a second slide rail assembly (6), a support assembly (7), a connecting plate (71), an end plate (72), a locking bolt (73), a support block (74), a through hole (741), a mounting block (75), a support rod (751), a mounting rod (76), a lifting mechanism (77), and a measuring meter (8). DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0033] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Embodiment 1:

[0036] like Figure 1-4 As shown, the utility model. Specifically, a crankshaft inspection fixture includes a base 1, a slide groove 11 is provided on the base 1 along its length direction, and a second slide rail assembly 6 is arranged in the slide groove 11; two support plates arranged opposite to each other; a first support plate 2 and a second support plate 3, wherein the first support plate 2 is fixedly connected to the base 1, and the second support plate 3 is connected to the second slide rail assembly 6, the first support plate 2 is connected with a clamping mechanism 4 for clamping the end of the crankshaft, and the second support plate 3 is provided with an axial through hole 31 for accommodating the end of the crankshaft; a first slide rail assembly 5 is arranged beside the support plate, and a support assembly 7 is slidably connected to the first slide rail assembly 5, and a measuring meter 8 is connected to the support assembly 7 to detect the crankshaft clamped between the first support plate 2 and the second support plate 3. By adopting the above structural design, the crankshaft inspection fixture is provided with two oppositely arranged first support plates 2 and second support plates 3, wherein the first support plate 2 is fixedly connected to the base 1, and the second support plate 3 is slidably arranged relative to the first support plate 2, so as to facilitate adjustment of the distance between the two support plates to adapt to the placement of crankshafts of different lengths; a clamping mechanism 4 is arranged on the first support plate 2, and an axial through hole 31 is arranged on the second support plate 3. When in use, one end of the crankshaft is placed in the axial through hole 31, and the other end is clamped by the clamping mechanism 4 to prevent the crankshaft from rotating. The measuring meter 8 is connected to the second slide rail assembly 6 through the support assembly 7, and the first slide rail assembly 5 and the second slide rail assembly 6 are arranged in parallel. The measuring meter 8 can be moved parallel to the crankshaft under the push of an external force, and the crankshaft can be inspected.

[0037] In this example, the clamping mechanism 4 includes: a bottom plate 41 and a U-shaped block 42, wherein the bottom plate 41 is fixedly connected to the first support plate 2, two connecting seats 411 are arranged opposite to each other on the bottom plate 41, and the two ends of the U-shaped block 42 are respectively connected to the two connecting seats 411; two oppositely arranged V-shaped clamping blocks; a first V-shaped clamping block 44 and a second V-shaped clamping block 45, wherein the first V-shaped clamping block 44 is fixedly arranged between the two connecting seats 411, and the second V-shaped clamping block 45 is slidably arranged inside the U-shaped block 42, and a driving member 46 for driving the second V-shaped clamping block 45 to slide is also arranged on the top of the U-shaped block 42. The driving member 46 includes a threaded barrel 422 passing through the top of the U-shaped block 42, a top block 461 fixedly connected to the second V-shaped clamping block 45, and a threaded rod 462 threadedly connected to the inside of the threaded barrel 422, one end of the threaded rod 462 is rotatably connected to the top block 461, and the other end is provided with a rotary rod 463. By adopting the above structural design, the clamping mechanism 4 is provided with two V-shaped clamps, a first V-shaped clamp 44 and a second V-shaped clamp 45, wherein the first V-shaped clamp 44 is provided below the second V-shaped clamp 45, and the size of the first V-shaped clamp 44 is larger than the second V-shaped clamp 45. When in use, the end of the crankshaft is placed on the first V-shaped clamp 44, and the threaded rod 462 is driven to rotate and lift by rotating the rotating rod 463, and the threaded rod 462 moves against the second V-shaped clamp 45 to move closer to or away from the first V-shaped clamp 44, thereby clamping the crankshaft. The first V-shaped clamp 44 and the second V-shaped clamp 45 are both provided with tooth grooves, which can further prevent the crankshaft from rotating. The two inner walls of the U-shaped block 42 are provided with guide strips 421, and the two sides of the top block 461 are provided with notches 4611 that match the guide strips 421. The first V-shaped clamp 44 and the second V-shaped clamp 45 are both provided with tooth grooves.

[0038] In this example, the support assembly 7 includes: a connecting plate 71, the connecting plate 71 is fixedly connected to the slider of the first slide rail assembly 5, a supporting block 74 is provided on the connecting plate 71, and two through holes 741 are opened on the top of the supporting block 74; a mounting block 75, the bottom of the mounting block 75 is connected to two support rods 751 located in the through holes 741, the upper part of the mounting block 75 is connected to a mounting rod 76, and the measuring meter 8 is fixedly connected to the mounting rod 76;

[0039] In this example, a lifting mechanism 77 is provided on the back of the support block 74 and is connected to the mounting block 75 to drive the mounting block 75 to rise and fall. It is noted that the lifting mechanism 77 can be implemented by a linear actuator such as an electric push rod or a mechanism similar to the driving member 46 composed of a manual threaded rod and a threaded sleeve. The measuring gauge 8 is a micrometer or other testing instrument. A partition 12 parallel to the slide rail of the first slide rail assembly 5 is provided below the connecting plate 71, and an end plate 72 is also connected to the back of the connecting plate 71, the end plate 72 is close to the partition 12, and a locking bolt 73 that can be pressed against the partition 12 is provided on the end plate 72. By adopting the above structure, the position of the support assembly 7 can be fixed by the cooperation of the locking bolt 73 and the partition 12 during use.

[0040] Working principle: When in use, one end of the crankshaft is placed in the shaft through hole 31, and the other end is clamped by the clamping mechanism 4. Specifically, the end of the crankshaft is placed on the first V-shaped clamp 44, and the threaded rod 462 is driven to rotate and rise by rotating the rotary rod 463. The threaded rod 462 moves against the second V-shaped clamp 45 to move closer to or away from the first V-shaped clamp 44, thereby clamping the crankshaft. The first V-shaped clamp 44 and the second V-shaped clamp 45 are both provided with teeth, which can further prevent the crankshaft from rotating. The measuring meter 8 is connected to the second slide rail assembly 6 through the support assembly 7. The first slide rail assembly 5 and the second slide rail assembly 6 are arranged in parallel. The measuring meter 8 can be pushed by an external force to move parallel to the crankshaft and detect the crankshaft.

[0041] The above are only embodiments of the utility model, and the circuits, electronic components and modules involved are all prior art, which can be fully implemented by those skilled in the art. It is needless to say that the content protected by this application does not involve improvements to software and methods. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the prior art in the field, and have the ability to apply conventional experimental means before the date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A crankshaft inspection fixture, Features: It comprises a base (1), wherein a slide groove (11) is provided on the base (1) along its length direction, and a second slide rail assembly (6) is arranged in the slide groove (11); Two support plates arranged opposite to each other; a first support plate (2) and a second support plate (3), wherein the first support plate (2) is fixedly connected to the base (1), and the second support plate (3) is connected to the second slide rail assembly (6), the first support plate (2) is connected to a clamping mechanism (4) for clamping the end of the crankshaft, and the second support plate (3) is provided with an axial through hole (31) for accommodating and supporting the end of the crankshaft; A first slide rail assembly (5) is arranged beside the support plate, the first slide rail assembly (5) is slidably connected to a support assembly (7), and the support assembly (7) is connected to a measuring meter (8) for detecting a crankshaft clamped between the first support plate (2) and the second support plate (3).

2. A crankshaft inspection tool as claimed in claim 1, Features: The clamping mechanism (4) comprises: A bottom plate (41) and a U-shaped block (42), wherein the bottom plate (41) and the first support plate (2) are fixedly connected, two connecting seats (411) are arranged opposite to each other on the bottom plate (41), and two ends of the U-shaped block (42) are respectively connected to the two connecting seats (411); Two V-shaped clamping blocks are arranged opposite to each other; a first V-shaped clamping block (44) and a second V-shaped clamping block (45), wherein the first V-shaped clamping block (44) is fixedly arranged between the two connecting seats (411), and the second V-shaped clamping block (45) is slidably arranged inside the U-shaped block (42), and a driving member (46) for driving the second V-shaped clamping block (45) to slide is also arranged on the top of the U-shaped block (42).

3. A crankshaft inspection tool as claimed in claim 2, Features: The driving member (46) comprises a threaded barrel (422) passing through the top of the U-shaped block (42), a top block (461) fixedly connected to the second V-shaped clamping block (45), and a threaded rod (462) threadedly connected to the inside of the threaded barrel (422); one end of the threaded rod (462) is rotatably connected to the top block (461), and the other end is provided with a rotating rod (463).

4. A crankshaft inspection fixture as claimed in claim 3, Features: The two inner walls of the U-shaped block (42) are provided with guide strips (421), and the two sides of the top block (461) are provided with notches (4611) matched with the guide strips (421).

5. A crankshaft inspection tool as claimed in claim 2, Features: The first V-shaped clamping block (44) and the second V-shaped clamping block (45) are both provided with tooth grooves.

6. A crankshaft inspection tool as claimed in claim 5, Features: The support assembly (7) comprises: A connecting plate (71), the connecting plate (71) being fixedly connected to a slider of the first slide rail assembly (5), a supporting block (74) being arranged on the connecting plate (71), and two through holes (741) being formed on the top of the supporting block (74); A mounting block (75), wherein the bottom of the mounting block (75) is connected to two support rods (751) located in the through holes (741), the upper part of the mounting block (75) is connected to a mounting rod (76), and the measuring meter (8) is fixedly connected to the mounting rod (76); A lifting mechanism (77) is arranged on the back of the support block (74) and is connected to the mounting block (75) to drive the mounting block (75) to rise and fall.

7. A crankshaft inspection tool as claimed in claim 6, Features: A partition plate (12) parallel to the slide rail of the first slide rail assembly (5) is arranged below the connecting plate (71), and an end plate (72) is also connected to the back of the connecting plate (71). The end plate (72) is close to the partition plate (12), and a locking bolt (73) that can be pressed against the partition plate (12) is arranged on the end plate (72).

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