Crankshaft static balance testing fixture
By designing auxiliary clamping and limiting components for the crankshaft static balancing fixture, the problem of traditional testing equipment being unable to stably clamp the crankshaft was solved, thus achieving stability and convenience in crankshaft testing.
Patent Information
- Application Number
- CN202520711399.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-04-15
AI Technical Summary
Traditional crankshaft testing equipment cannot stably clamp both ends of the crankshaft, especially when the diameters at both ends of the crankshaft are large or small, resulting in unstable testing.
A crankshaft static balancing fixture was designed, which includes an auxiliary clamping assembly and an installation limiting assembly. By adjusting the limiting clamping method, the two ends of the crankshaft are placed stably. The fixture uses a limiting plate, a two-way lead screw, and a moving plate to achieve stable clamping and convenient disassembly.
It achieves stable clamping of the crankshaft during the testing process, ensuring the accuracy and convenience of the testing, and solves the problem of testing stability when the diameters at both ends of the crankshaft are inconsistent.
Smart Images
Figure CN223910402U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a crankshaft static balance testing fixture and belongs to the technical field of testing fixtures. BACKGROUND
[0002] The crankshaft is the most important component in the engine. It bears the force transmitted by the connecting rod and converts it into torque to drive other accessories on the engine. The crankshaft is subjected to the combined action of centrifugal force of rotating mass, periodic change of gas inertia force and reciprocating inertia force, so it must have sufficient strength and stiffness, and the journal surface must be wear-resistant, uniform in operation and good in balance.
[0003] In the process of performing crankshaft detection, the crankshaft is usually placed on the detection equipment and rotated to detect the balance, and whether it can maintain a stable angle after rotation is observed. However, the two ends of the traditional detection equipment usually have a fixed diameter size, which leads to the fact that when the diameter of the two ends of the crankshaft is large or small, the stable detection of the crankshaft on the detection equipment cannot be ensured.
[0004] Therefore, a new crankshaft static balance testing fixture is provided to solve the above problems. SUMMARY
[0005] The utility model discloses a crankshaft static balance testing fixture, which is provided with an auxiliary clamping assembly. The auxiliary clamping assembly is adjusted to limit and clamp the two ends of the crankshaft, so that the two ends of the crankshaft can be stably placed on the detection device.
[0006] The utility model discloses a crankshaft static balance testing fixture, which is provided with an auxiliary clamping assembly. The auxiliary clamping assembly is adjusted to limit and clamp the two ends of the crankshaft, so that the two ends of the crankshaft can be stably placed on the detection device.
[0007] Preferably, the limiting disc is used to limit and fix the two ends of the crankshaft. The upper part of the mounting frame is provided with a moving plate. The shaft body is rotatably connected between the inner and outer walls of the moving plate. One end of the shaft body is fixedly installed with the limiting disc.
[0008] Preferably, the bidirectional screw rod can drive the moving block to move. The semicircular limiting plate is limited and clamped along with the movement of the moving block, so that the crankshaft is more stable during detection. The limiting disc is internally provided with a mounting groove. The first bidirectional screw rod is rotatably connected in the mounting groove. The outer surface of the bidirectional screw rod is screwed with the moving block. The outer surface of the moving block is fixedly installed with the semicircular limiting plate.
[0009] Preferably, the knob is arranged to facilitate rotation of the first bidirectional screw rod, the inside of the limiting disc is provided with the knob, one end of the crankshaft is located between the semicircular limiting plates, the side wall of the moving plate is fixedly provided with a first scale disc, and the outer surface of the shaft body is fixedly provided with a second scale disc.
[0010] Preferably, the second bidirectional screw rod is arranged to drive the moving plate to move when being rotated, the limiting disc is driven to move away from each other with the movement of the moving plate, and the crankshaft can be taken out from the detection equipment.
[0011] Preferably, the L-shaped moving block is arranged to make the moving plate more stable when moving, and reduce shaking at both ends and the like, the lower part of the moving plate is screwed on the outer surface of the second bidirectional screw rod, the side wall of the mounting frame is fixedly provided with a fixed side plate, the fixed side plates are fixedly provided with guide rods, the outer surface of the guide rods is slidably provided with L-shaped moving blocks, and one end of the L-shaped moving block is fixedly connected with the side wall of the moving plate.
[0012] The utility model discloses the beneficial effects are:
[0013] 1. The auxiliary clamping assembly is arranged, and the clamping makes the both ends of the crankshaft be stably limited, so that the testing is more stable, thereby relieving the problem that when the diameter of both ends of the crankshaft is large or small, the crankshaft cannot be stably detected on the detection equipment.
[0014] 2. The mounting limiting assembly is arranged, and the crankshaft can be conveniently detached from the testing device through the moving adjustment, so that the detection is more convenient. DRAWINGS
[0015] Figure 1 It is the whole structure schematic view of the utility model.
[0016] Figure 2 It is the testing structure schematic view of the utility model.
[0017] Figure 3 It is the sectional structure schematic view of the utility model.
[0018] Figure 4 It is the B place enlarged view in the utility model Figure 2 .
[0019] Figure 5 It is the A place enlarged view in the utility model Figure 3 .
[0020] As shown in FIG. 1, a static balance testing tool for a crankshaft 5 comprises a mounting frame 1, supporting legs 4, and a crankshaft 5, and further comprises an auxiliary clamping assembly 2 and a mounting limiting assembly 3. The supporting legs 4 are fixedly installed at the lower part of the mounting frame 1, the crankshaft 5 is arranged at the upper part of the mounting frame 1, the auxiliary clamping assembly 2 is installed at the upper part of the mounting frame 1, and the mounting limiting assembly 3 is arranged outside the mounting frame 1. The auxiliary clamping assembly 2 is arranged to achieve a limiting clamping function through an adjusting mechanism, thereby ensuring that the two ends of the crankshaft 5 are stably arranged outside the testing device. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0022] Please refer to Figure 1 - Figure 5 As shown in FIG. 1, a static balance testing tool for a crankshaft 5 comprises a mounting frame 1, supporting legs 4, and a crankshaft 5, and further comprises an auxiliary clamping assembly 2 and a mounting limiting assembly 3. The supporting legs 4 are fixedly installed at the lower part of the mounting frame 1, the crankshaft 5 is arranged at the upper part of the mounting frame 1, the auxiliary clamping assembly 2 is installed at the upper part of the mounting frame 1, and the mounting limiting assembly 3 is arranged outside the mounting frame 1. The auxiliary clamping assembly 2 is arranged to achieve a limiting clamping function through an adjusting mechanism, thereby ensuring that the two ends of the crankshaft 5 are stably arranged outside the testing device.
[0023] As Figure 1 - Figure 5As shown, the upper part of the mounting frame 1 is provided with a moving plate 201, the inner and outer walls of the moving plate 201 are rotatably connected with a shaft body 202, one end of the shaft body 202 is fixedly installed with a limiting disc 203, an installation slot is formed in the inside of the limiting disc 203, a first bidirectional screw rod 204 is rotatably connected in the inside of the installation slot, a moving block 205 is screwed on the outer surface of the bidirectional screw rod, a semicircular limiting plate 206 is fixedly installed on the outer surface of the moving block 205, a knob is penetrated in the inside of the limiting disc 203, one end of the crankshaft 5 is located between the semicircular limiting plates 206, a first scale disc 207 is fixedly installed on the side wall of the moving plate 201, a second scale disc 208 is fixedly installed on the outer surface of the shaft body 202, the first scale disc 207 is fixedly arranged, the second scale disc 208 is rotatable with the shaft body 202, when the user tests, first place the crankshaft 5 between the limiting discs 203, at this time rotate the knob, the first bidirectional screw rod 204 is driven to move with the rotation of the knob, the moving block 205 is driven to move with the movement of the first bidirectional screw rod 204, the semicircular limiting plate 206 is clamped and limited with the movement of the moving block 205, so that the crankshaft 5 is relatively stable during detection, after the limiting and clamping are completed, at this time rotate the shaft body 202, the crankshaft 5 is rotated with the angle with the rotation of the shaft body 202, after the rotation is completed, observe whether the crankshaft 5 rotates by itself when it stops rotating, at the same time, the second scale disc 208 is convenient for the tester to record the rotation angle, so that the measurement is more accurate, at the same time, the limiting and clamping according to the adjustment mode make the both ends of the crankshaft 5 stably limited, so that the test is more stable, thereby relieving the problem that when the diameters of the both ends of the crankshaft 5 are large or small, the crankshaft 5 cannot be stably detected on the detection equipment.
[0024] As shown in Figure 1 Figure 3 As shown, the mounting limiting assembly 3 comprises a second bidirectional screw rod 301, the upper part of the mounting frame 1 is provided with a sliding groove, the second bidirectional screw rod 301 is rotatably connected in the inside of the sliding groove, the lower part of the moving plate 201 is screwed on the outer surface of the second bidirectional screw rod 301, a fixed side plate is fixedly installed on the side wall of the mounting frame 1, a guide rod 302 is fixedly installed between the fixed side plates, an L-shaped moving block 303 is slidably arranged on the outer surface of the guide rod 302, one end of the L-shaped moving block 303 is fixedly connected with the side wall of the moving plate 201, after the detection is completed, at this time rotate the second bidirectional screw rod 301, the moving plate 201 is driven to move with the rotation of the second bidirectional screw rod 301, the limiting disc 203 is moved with the movement of the moving plate 201, the crankshaft 5 can be taken off from the detection device with the movement of the limiting disc 203.
[0025] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.
[0026] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.
Claims
1. A static balance testing device for a crankshaft, comprising a mounting frame (1), supporting legs (4) and a crankshaft (5), characterized in that: Also include auxiliary clamping assembly (2) and installation limiting assembly (3), the support foot (4) is fixedly installed in the lower part of the mounting bracket (1), the crankshaft (5) is arranged on the upper part of the mounting bracket (1), the auxiliary clamping assembly (2) is installed on the upper part of the mounting bracket (1), the installation limiting assembly (3) is arranged outside the mounting bracket (1).
2. The crankshaft static balance tester of claim 1 wherein: The upper part of the mounting bracket (1) is provided with a moving plate (201), the moving plate (201) is rotatably connected between the inner and outer walls of the moving plate (201), one end of the shaft body (202) is fixedly installed with a limiting disc (203).
3. The crankshaft static balance tester of claim 2 wherein: The inside of the limiting disc (203) is provided with an installation slot, the first bidirectional screw rod (204) is rotatably connected in the installation slot, the outer surface of the bidirectional screw rod is screwed with a moving block (205), the outer surface of the moving block (205) is fixedly installed with a semicircular limiting plate (206).
4. The crankshaft static balance tester of claim 3 wherein: The inside of the limiting disc (203) is provided with a knob, one end of the crankshaft (5) is located between the semicircular limiting plates (206), the side wall of the moving plate (201) is fixedly installed with a first scale disc (207), the outer surface of the shaft body (202) is fixedly installed with a second scale disc (208).
5. The crankshaft static balance check tool of claim 1, wherein: The installation limiting assembly (3) comprises a second bidirectional screw rod (301), the upper part of the mounting bracket (1) is provided with a sliding groove, and the second bidirectional screw rod (301) is rotatably connected in the sliding groove.
6. The crankshaft static balance tester of claim 5 wherein: The lower part of the moving plate (201) is screwed on the outer surface of the second bidirectional screw rod (301), the side wall of the mounting bracket (1) is fixedly installed with a fixed side plate, the fixed side plate is fixedly installed with a guide rod (302), the outer surface of the guide rod (302) is slidably provided with an L-shaped moving block (303), one end of the L-shaped moving block (303) is fixedly connected with the side wall of the moving plate (201).