Balance shaft support position degree testing fixture

Abstract

The utility model discloses a balance shaft support position degree testing fixture, which relates to the technical field of balance shaft support testing fixtures, and comprises a camshaft support main body, the camshaft support main body comprises a support structure, a shaft seat and two groups of mounting holes; and the detection structure comprises a detection base, a T-shaped sliding rail and a movable plate. According to the utility model, the output end in the cylinder is started to push the moving plate to slide on the outer surface of the T-shaped slide rail, and when the moving plate moves, the two groups of fixed plates and the detection pins are driven to move synchronously, and along with the movement of the two groups of detection pins, one ends of the two groups of detection pins can be inserted into the two groups of mounting holes. According to the technical scheme, the position degree of the two sets of mounting holes can be detected at the moment, all the mounting holes can be detected at a time during detection through the design, therefore, the detection efficiency can be effectively improved, and the situation of missing detection can be avoided.

Description

Technical Field

[0001] This application relates to the field of balance shaft bracket inspection tools, specifically to a balance shaft bracket position measurement tool. Background Technology

[0002] The balance shaft bracket plays a crucial role in the engine by supporting the balance shaft and reducing noise and vibration by precisely counteracting the second-order vibration of the piston. Millimeter-level deviations in the mounting hole positions will directly weaken the vibration suppression effect and lead to abnormal bearing wear and bolt breakage risks. Therefore, it is necessary to detect the positional accuracy of the balance shaft bracket.

[0003] The applicant discovered through a search that a Chinese patent, "A Position Inspector for a Balance Shaft Bracket," with publication number "CN217844982U," discloses a test base, a limiting component, a lower assembly hole inspection pin, and an upper assembly hole inspection pin. These components are mounted on the test base and work together to inspect the distance from the vertical part to the lower assembly hole, as well as the position accuracy of the lower and upper assembly holes. This invention enables rapid, efficient, accurate, and safe inspection of the conformity of balance shaft bracket products, reducing the labor intensity of inspectors, improving production efficiency, and eliminating safety hazards.

[0004] However, the applicant believes that the shortcomings are as follows:

[0005] 1. The above device requires workers to manually insert the test pins into the assembly holes one by one during testing, which results in low testing efficiency. In addition, the large number of assembly holes may cause workers to make mistakes and miss some tests, which can easily affect the accuracy of the test.

[0006] 2. The above-mentioned device lacks a limiting structure for the balance shaft bracket during testing, which may cause the balance shaft bracket to move during the testing process. This may cause the assembly hole to shift, thus affecting the testing process. Summary of the Invention

[0007] Therefore, this application provides a balance shaft bracket position gauge to solve the problems of low detection efficiency and lack of limiting the balance shaft bracket during detection in the prior art.

[0008] To achieve the above objectives, this application provides the following technical solution:

[0009] In a first aspect, a balance shaft bracket position gauge includes: a camshaft bracket body, wherein the camshaft bracket body includes a bracket structure, a bearing seat and mounting holes, and the mounting holes are provided in two sets;

[0010] The detection structure includes a detection base, a T-shaped slide rail, and a movable plate, with the support structure disposed on the upper surface of the detection base;

[0011] The fixed structure includes a support base, an optical axis, a drive motor, a bidirectional lead screw, and a linear bearing. The optical axis and the linear bearing are provided in two sets. The lower surface of the shaft base is attached to the upper surface of the support base.

[0012] Optionally, the bearing seat is fixedly connected to the surface of one side of the bracket structure, and the two sets of mounting holes are respectively opened inside the lower two sides of the bracket structure. The bearing seat is used to connect with the balance shaft. In use, the camshaft bracket body can be fixed to the mounting location by bolts through the two sets of mounting holes.

[0013] Optionally, the T-shaped slide rail is fixedly connected to the upper surface of the detection base, and a mounting plate is fixedly connected to one end of the upper surface of the detection base. A cylinder is installed on one side of the mounting plate, and a movable plate is fixedly connected to one end of the push rod inside the cylinder. An external power source can provide power to the cylinder. After the cylinder is started, the push rod inside it will push the movable plate to move.

[0014] Optionally, the movable plate is slidably connected to the outer surface of the T-shaped slide rail. Both ends of the movable plate are fixedly connected to fixed plates, and detection pins are fixedly connected to one side of each of the two sets of fixed plates. The position and size of the two sets of detection pins are adapted to the position and size of the two sets of mounting holes. The T-shaped slide rail can improve the stability of the movable plate when it moves and prevent the movable plate from shifting during movement. When the movable plate moves, it can drive the two sets of fixed plates and detection pins to move synchronously.

[0015] Optionally, the two sets of optical axes are respectively fixedly connected to the surfaces on both sides of the support base. One end of each set of optical axes is fixedly connected to a fixing column, and the lower end of the two sets of fixing columns is fixedly connected to the upper surface of the detection base. The support base can support the outer surface of the shaft seat, which can restrict the overall position of the camshaft bracket body.

[0016] Optionally, a mounting base and a support plate are fixedly connected to both sides of the upper surface of the detection base, and a drive motor is installed at the upper end of the mounting base. A bidirectional lead screw is fixedly connected to the output end of the drive motor. One end of the bidirectional lead screw is connected to the inside of the upper end of the support plate. Starting the drive motor can drive the bidirectional lead screw to rotate. The support plate can improve the stability of the bidirectional lead screw during rotation.

[0017] Optionally, connecting plates are threaded onto the outer surfaces of both ends of the bidirectional lead screw, and clamping plates are fixedly connected to one end of each of the two sets of connecting plates. Linear bearings are fixedly connected to the lower ends of each of the two sets of clamping plates. When the bidirectional lead screw rotates, it can drive the two sets of connecting plates to move away from or closer to each other, and when the two sets of connecting plates move, they will drive the two sets of clamping plates to move synchronously.

[0018] Optionally, two sets of linear bearings are slidably sleeved on the outer surfaces of two sets of optical axes. When the two sets of clamping plates move, they will drive the two sets of linear bearings to move synchronously. The arrangement of the two sets of linear bearings and optical axes can effectively improve the stability of the two sets of clamping plates when they move.

[0019] Compared with the prior art, this application has at least the following beneficial effects:

[0020] 1. By starting the cylinder, the output end inside will push the moving plate to slide on the outer surface of the T-shaped slide rail. When the moving plate moves, it will drive the two sets of fixed plates and detection pins to move synchronously. As the two sets of detection pins move, one end of them can be inserted into the interior of the two sets of mounting holes. At this time, the position accuracy of the two sets of mounting holes can be detected. This design allows all mounting holes to be detected at one time, thereby effectively improving the efficiency of the detection and avoiding missed detections.

[0021] 2. The support base supports the camshaft seat, thus restricting the overall position of the camshaft support body. Starting the drive motor drives the double-acting lead screw to rotate. When the double-acting lead screw rotates, it causes the two sets of connecting plates and clamping plates to move closer together. The arrangement of two sets of linear bearings and optical shafts improves the stability of the two sets of double-acting lead screws during movement. When the two sets of clamping plates move closer together, they can clamp the outer surface of the camshaft seat. This design allows the device to fix the position of the camshaft support body during testing, thereby minimizing the possibility of the camshaft support body shifting during the testing process. Attached Figure Description

[0022] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0023] Figure 1 A three-dimensional structural schematic diagram of a balance shaft bracket position gauge provided in one embodiment of this application;

[0024] Figure 2A three-dimensional side view of a balance shaft bracket position gauge provided in one embodiment of this application;

[0025] Figure 3 A three-dimensional structural schematic diagram of the main body of a camshaft support for a balance shaft support position gauge provided in one embodiment of this application;

[0026] Figure 4 This is an exploded three-dimensional structural diagram of the main body of a camshaft support for a balance shaft support position gauge, provided as an embodiment of this application.

[0027] Figure 5 A three-dimensional structural diagram of a balance shaft bracket position gauge fixing structure (3) provided in one embodiment of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] In the diagram: 1. Camshaft bracket body; 11. Bracket structure; 12. Shaft seat; 13. Mounting hole; 2. Detection structure; 21. Detection base; 22. T-shaped slide rail; 23. Mounting plate; 24. Cylinder; 25. Moving plate; 26. Fixed plate; 27. Detection pin; 3. Fixed structure; 31. Support seat; 32. Optical axis; 33. Fixed column; 34. Mounting seat; 35. Drive motor; 36. Two-way lead screw; 37. Support plate; 38. Connecting plate; 39. Clamping plate; 310. Linear bearing. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1, as Figures 1 to 3 As shown, a balance shaft bracket position gauge according to the first aspect embodiment of the present invention includes: a camshaft bracket body 1, the camshaft bracket body 1 including a bracket structure 11, a bearing seat 12 and mounting holes 13, and the mounting holes 13 are provided in two sets;

[0032] The detection structure 2 includes a detection base 21, a T-shaped slide rail 22 and a movable plate 25, and a support structure 11 is disposed on the upper surface of the detection base 21.

[0033] The fixed structure 3 includes a support base 31, an optical axis 32, a drive motor 35, a two-way lead screw 36, and a linear bearing 310. Both the optical axis 32 and the linear bearing 310 have two sets. The lower surface of the shaft seat 12 is attached to the upper surface of the support base 31. The shaft seat 12 is fixedly connected to one side of the support structure 11. Two sets of mounting holes 13 are respectively opened inside the lower two sides of the support structure 11. The T-shaped slide rail 22 is fixedly connected to the upper surface of the detection base 21. One end of the upper surface of the detection base 21 is fixedly connected to a mounting plate 23. A cylinder 24 is mounted on one side of the mounting plate 23. One end of the push rod inside the cylinder 24 is fixedly connected to a movable plate 25. The movable plate 25 is slidably connected to the outer surface of the T-shaped slide rail 22. Both ends of the movable plate 25 are fixedly connected to fixed plates 26. Detection pins 27 are fixedly connected to one side of each of the two sets of fixed plates 26. The position and size of the two sets of detection pins 27 are adapted to the position and size of the two sets of mounting holes 13.

[0034] The technical effects achieved by the above embodiments are as follows: the bearing seat 12 is used to connect with the balance shaft. In use, the camshaft bracket body 1 can be fixed to the mounting location by bolts through two sets of mounting holes 13. An external power source can provide power to the cylinder 24. After the cylinder 24 is started, its internal push rod will push the movable plate 25 to move. The T-shaped slide rail 22 can improve the stability of the movable plate 25 during movement and prevent the movable plate 25 from deviating during movement. When the movable plate 25 moves, it can drive the two sets of fixing plates 26 and detection pins 27 to move synchronously. As the two sets of detection pins 27 move, one end of them can be inserted into the interior of the two sets of mounting holes 13. At this time, the position of the two sets of mounting holes 13 can be detected. This design allows all mounting holes 13 to be detected at one time, thereby effectively improving the efficiency of detection and avoiding missed detection.

[0035] Example 2, as Figures 1 to 5As shown, a balance shaft bracket position gauge includes all the contents of Embodiment 1. In addition, two sets of optical axes 32 are fixedly connected to the surfaces on both sides of the support base 31. One end of each set of optical axes 32 is fixedly connected to a fixing post 33, and the lower ends of the two sets of fixing posts 33 are fixedly connected to the upper surface of the detection base 21. The two sides of the upper surface of the detection base 21 are fixedly connected to a mounting base 34 and a support plate 37, respectively. A drive motor 35 is installed on the upper end of the mounting base 34, and a bidirectional lead screw 36 is fixedly connected to the output end of the drive motor 35. One end of the bidirectional lead screw 36 is bearing connected to the interior of the upper end of the support plate 37. Connecting plates 38 are threaded onto the outer surfaces of both ends of the bidirectional lead screw 36. Clamping plates 39 are fixedly connected to one end of each set of connecting plates 38, and linear bearings 310 are fixedly connected to the lower ends of each set of clamping plates 39. The two sets of linear bearings 310 are slidably sleeved on the outer surfaces of the two sets of optical axes 32.

[0036] The technical effects achieved by the above embodiments are as follows: the support base 31 can support the outer surface of the bearing seat 12, thus restricting the overall position of the camshaft support body 1. An external power supply can provide power to the drive motor 35. After the drive motor 35 is started, its output end can drive the bidirectional lead screw 36 to rotate. The support plate 37 can improve the stability of the bidirectional lead screw 36 during rotation. When the bidirectional lead screw 36 rotates, it can drive the two sets of connecting plates 38 to move away from or towards each other. When the two sets of connecting plates 38 move, they will drive the two sets of clamping plates 39 to move synchronously. When the two sets of clamping plates 39 move, they will drive the two sets of linear bearings 310 to move synchronously. The arrangement of the two sets of linear bearings 310 and the optical axis 32 can effectively improve the stability of the camshaft support body 1. The stability of the two sets of clamping plates 39 during movement, and the ability of the two sets of clamping plates 39 to clamp the outer surface of the bearing seat 12 when they come close to each other, allows the device to fix the position of the camshaft support body 1 during testing, thereby minimizing the possibility of the camshaft support body 1 shifting during testing. In addition, the drive motor 35 has an internal locking structure that can lock its internal output end when stopped, thereby preventing unnecessary rotation of the bidirectional lead screw 36. Furthermore, anti-slip pads are provided on the opposite side surfaces of the two sets of clamping plates 39, and the anti-slip pads are made of rubber. Due to the good elasticity of rubber, this design can effectively protect the bearing seat 12 during clamping, preventing scratches or pressure damage to the outer surface of the bearing seat 12.

[0037] The cylinder 24 and drive motor 35 used in this application are products that can be purchased directly from the market. Their principles, connection methods and control methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0038] Working principle: First, the camshaft support body 1 is placed on the upper surface of the detection base 21, and the outer surface of the bearing seat 12 is attached to the upper surface of the support base 31. Then, the drive motor 35 is started to drive the bidirectional lead screw 36 to rotate. When the bidirectional lead screw 36 rotates, it can drive the two sets of connecting plates 38 and clamping plates 39 to move closer together. When the two sets of clamping plates 39 move closer together, they can clamp the outer surface of the bearing seat 12. At this time, the locking structure inside the drive motor 35 will lock the output end inside the bidirectional lead screw 36 to prevent the bidirectional lead screw 36 from rotating. At this time, the position of the camshaft bracket body 1 is fixed. Then, the mounting base 34 is activated to push the movable plate 25 to move. When the movable plate 25 moves, it will drive the two sets of fixed plates 26 and detection pins 27 to move synchronously. Then, one end of the two sets of detection pins 27 will move closer to the two sets of mounting holes 13. If the two sets of detection pins 27 can be inserted into the two sets of mounting holes 13, it means that the position of the two sets of mounting holes 13 is accurate. If the two sets of detection pins 27 cannot be inserted into the two sets of mounting holes 13, it means that the position of the two sets of mounting holes 13 may be offset to a certain extent.

[0039] The cylinder 24, drive motor 35, and all threaded and movable parts in this application need to be cleaned and maintained regularly (including but not limited to dust removal and lubrication) to ensure their normal operation.

[0040] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A position accuracy gauge for a balance shaft support, characterized in that, include: The camshaft support body (1) includes a support structure (11), a bearing seat (12) and mounting holes (13), and the mounting holes (13) are provided in two sets; The detection structure (2) includes a detection base (21), a T-shaped slide rail (22) and a movable plate (25), and the support structure (11) is disposed on the upper surface of the detection base (21); The fixed structure (3) includes a support base (31), an optical axis (32), a drive motor (35), a two-way lead screw (36), and a linear bearing (310). The optical axis (32) and the linear bearing (310) are provided in two sets. The lower surface of the bearing seat (12) is attached to the upper surface of the support base (31).

2. The position accuracy gauge for a balance shaft bracket according to claim 1, characterized in that, The bearing seat (12) is fixedly connected to the surface of one side of the support structure (11), and the two sets of mounting holes (13) are respectively opened inside the lower two sides of the support structure (11).

3. The position measurement tool for a balance shaft bracket according to claim 1, characterized in that, The T-shaped slide rail (22) is fixedly connected to the upper surface of the detection base (21), and one end of the upper surface of the detection base (21) is fixedly connected to the mounting plate (23), and a cylinder (24) is installed on one side of the mounting plate (23). One end of the push rod inside the cylinder (24) is fixedly connected to the movable plate (25).

4. The position accuracy gauge for a balance shaft bracket according to claim 1, characterized in that, The movable plate (25) is slidably connected to the outer surface of the T-shaped slide rail (22). Both ends of the movable plate (25) are fixedly connected to the fixing plate (26), and the two sets of fixing plates (26) are fixedly connected to the surface on one side of the surface of the two sets of fixing plates (26). The position and size of the two sets of fixing pins (27) are adapted to the position and size of the two sets of mounting holes (13).

5. The position accuracy gauge for a balance shaft bracket according to claim 1, characterized in that, The two sets of optical axes (32) are respectively fixedly connected to the surfaces on both sides of the support base (31). One end of each set of optical axes (32) is fixedly connected to a fixing column (33), and the lower end of the two sets of fixing columns (33) is fixedly connected to the upper surface of the detection base (21).

6. The position accuracy gauge for a balance shaft bracket according to claim 5, characterized in that, The upper surface of the detection base (21) is fixedly connected to the two sides of the mounting base (34) and the support plate (37), respectively. The upper end of the mounting base (34) is equipped with a drive motor (35), and the output end of the drive motor (35) is fixedly connected with a bidirectional lead screw (36). One end of the bidirectional lead screw (36) is connected to the inside of the upper end of the support plate (37) by a bearing.

7. The position accuracy gauge for a balance shaft bracket according to claim 6, characterized in that, The outer surfaces of both ends of the bidirectional lead screw (36) are threaded with connecting plates (38), and one end of each of the two sets of connecting plates (38) is fixedly connected with a clamping plate (39), and the lower end of each of the two sets of clamping plates (39) is fixedly connected with a linear bearing (310).

8. The position accuracy gauge for a balance shaft bracket according to claim 1, characterized in that, Two sets of linear bearings (310) are slidably sleeved on the outer surfaces of two sets of optical axes (32).

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