A universal oil tight fixture for oil pressure test

Abstract

This utility model discloses a universal oil tightness clamp for oil pressure testing, including a mounting base plate, a support seat on the mounting base plate, a fixed seat and a movable seat concentrically arranged at both ends of the support seat, a linear drive mechanism arranged on the side of the movable seat away from the fixed seat, the linear drive mechanism can drive the movable seat to move towards the fixed seat to clamp the part; an oil inlet pipe assembly is arranged on the clamping surface of the fixed seat, and an oil outlet pipe assembly is arranged on the clamping surface of the movable seat; this utility model can conveniently and efficiently clamp and fix parts of different models and seal the internal cavity of the parts to quickly conduct an oil tightness test on the internal cavity of the parts.

Description

Technical Field

[0001] This utility model belongs to the technical field of oil tightness test fixtures, specifically relating to a general-purpose oil tightness fixture for oil pressure testing. Background Technology

[0002] In industrial manufacturing, many products require oil filling or pressure testing. To ensure the reliability of the oil tightness test, it is essential to guarantee the sealing of the internal cavity of the part and to clamp and fix the part to prevent movement during oil filling. However, in actual oil tightness testing, different parts have different internal cavity structures, so different plugs are usually required to accommodate different part cavity shapes. This limits the versatility of existing oil tightness fixtures and increases the cost of oil tightness testing.

[0003] Therefore, in view of the shortcomings of existing oil-tight clamps, such as insufficient versatility and inability to simultaneously seal and clamp parts, this utility model discloses a universal oil-tight clamp for oil pressure testing. Utility Model Content

[0004] This utility model discloses a universal oil tightness clamp for oil pressure testing, which can conveniently and efficiently clamp and fix parts of different models and seal the inner cavity of the parts to quickly conduct an oil tightness test on the inner cavity of the parts.

[0005] This utility model is achieved through the following technical solution:

[0006] A universal oil pressure test fixture includes a mounting base plate, a support base on the mounting base plate, a fixed seat and a movable seat concentrically arranged at both ends of the support base, a linear drive mechanism on the side of the movable seat away from the fixed seat, the linear drive mechanism being able to drive the movable seat to move towards the fixed seat to clamp the part; an oil inlet pipe assembly is arranged on the clamping surface of the fixed seat, and an oil outlet pipe assembly is arranged on the clamping surface of the movable seat.

[0007] The support base is used to support and position the part to be tested. The side of the fixed base closest to the movable base is the clamping surface, and the side of the movable base closest to the fixed base is also the clamping surface. The part is placed on the support base, and a linear drive mechanism moves the movable base towards the fixed base until the clamping surfaces of the fixed and movable bases clamp and fix both ends of the part, simultaneously sealing the internal cavity of the part. At this point, oil can be injected into the part through the oil inlet pipe assembly via the clamping surfaces of the fixed base, thus performing an oil tightness test on the part's internal cavity. After the test, the oil in the part's internal cavity is drained through the oil outlet pipe assembly, and then the linear drive mechanism moves the movable base away from the fixed base to release the part.

[0008] To better realize this utility model, the fixed seat is further provided with a first positioning boss A on the side near the movable seat, and the movable seat is provided with a second positioning boss B on the side near the fixed seat. The center of the first positioning boss A is provided with a central hole communicating with the outlet end of the oil inlet pipe assembly, and the center of the second positioning boss B is provided with a central hole communicating with the inlet end of the oil outlet pipe assembly.

[0009] To better realize this utility model, the top of the mounting base plate is provided with a guide rail, and the bottom of the movable seat is slidably connected to the guide rail.

[0010] To better realize this utility model, the linear drive mechanism further includes a stop pressure ring, a lead screw, and a bracket. The bracket is disposed on the side of the movable seat away from the fixed seat, and the lead screw is coaxially rotatably disposed at the end of the movable seat away from the fixed seat. One end of the lead screw is connected to the movable seat through the stop pressure ring, and the lead screw is engaged with the threaded hole on the bracket.

[0011] To better realize this utility model, a force-applying lever is further provided on the end of the lead screw away from the movable seat, and a hand ball is provided at the end of the force-applying lever.

[0012] To better realize this utility model, the oil inlet pipe assembly further includes an oil inlet pipe, an oil inlet valve, and a pressure gauge. The outlet end of the oil inlet pipe is connected to the clamping surface of the fixed base, and the oil inlet pipe is equipped with an oil inlet valve and a pressure gauge.

[0013] To better realize this utility model, the oil outlet pipe assembly further includes an oil outlet pipe and an oil outlet valve. The inlet end of the oil outlet pipe is connected to the clamping surface of the movable seat, and an oil outlet valve is provided on the oil outlet pipe.

[0014] To better realize this utility model, the top of the mounting base plate is further provided with an openable and closable protective cover.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0016] This invention uses a linear drive mechanism to move the movable seat toward the fixed seat, so that the clamping surface on one side of the fixed seat cooperates with the clamping surface on one side of the movable seat to clamp the two end faces of the inner cavity of the part. This not only clamps and fixes the part, but also seals the inner cavity of the part. At the same time, the inner cavity of the part is directly sealed by the clamping surfaces on both sides, eliminating the need to prepare different plugs according to different inner cavity shapes, thereby improving the versatility of the fixture and reducing the cost of oil tightness testing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a general-purpose oil-tight clamp;

[0018] Figure 2 Left view of a general-purpose oil-tight clamp;

[0019] Figure 3 Right view of a general-purpose oil-tight clamp;

[0020] Figure 4 This is a schematic diagram showing the direction of oil flow.

[0021] Wherein: 1-Inlet pipe assembly; 2-Outlet pipe assembly; 3-Mounting base plate; 4-Guide rail; 5-Fixed seat; 6-Movable seat; 7-Support seat; 8A-First positioning boss; 8B-Second positioning boss; 9-Stop pressure ring; 10-Handball; 11-Force application lever; 12-Screw rod; 13-Protective cover. Detailed Implementation

[0022] Example 1:

[0023] This embodiment provides a general-purpose oil tightness clamp for oil pressure testing, such as... Figures 1-4 As shown, the device includes a mounting base plate 3, on which a support base 7 is mounted. A fixed base 5 and a movable base 6 are concentrically mounted at both ends of the support base 7. A linear drive mechanism is mounted on the side of the movable base 6 away from the fixed base 5, enabling the movable base 6 to move towards the fixed base 5 to clamp parts. An oil inlet pipe assembly 1 is mounted on the clamping surface of the fixed base 5, and an oil outlet pipe assembly 2 is mounted on the clamping surface of the movable base 6. A guide rail 4 is mounted on the top of the mounting base plate 3, and the bottom of the movable base 6 is slidably connected to the guide rail 4.

[0024] The support seat 7 is located between the fixed seat 5 and the movable seat 6. The support seat supports and positions the part, ensuring that the part's inner cavity, the clamping surface of the fixed seat 5, and the clamping surface of the movable seat 6 are coaxial. Then, a linear drive mechanism moves the movable seat 6 towards the fixed seat 5, causing it to slide along the guide rail 4 until the clamping surfaces of the fixed seat 5 and the movable seat 6 clamp and fix both ends of the part, simultaneously sealing the part's inner cavity. Oil can then be injected into the part's inner cavity through the oil inlet pipe assembly 1 for an oil tightness test. After the test, the oil in the part's inner cavity is discharged through the oil outlet pipe assembly 2, which is connected to an external suction device. Finally, the linear drive mechanism moves the movable seat 6 away from the fixed seat 5 to loosen the part, facilitating its removal.

[0025] Furthermore, the top of the mounting base plate 3 is equipped with an openable and closable protective cover 13. During oil filling, if the internal cavity of the part is not sufficiently sealed, oil leakage may occur. To avoid oil splashing and contaminating the working area, the protective cover 13 is closed to enclose the part during the oil tightness test.

[0026] Example 2:

[0027] This embodiment is a further optimization based on Embodiment 1, such as... Figure 1 and Figure 4 As shown, a first positioning boss 8A is detachably provided on the side of the fixed seat 5 near the movable seat 6, and a second positioning boss 8B is detachably provided on the side of the movable seat 6 near the fixed seat 5. The center of the first positioning boss 8A is provided with a central hole communicating with the outlet end of the oil inlet pipe assembly 1, and the center of the second positioning boss 8B is provided with a central hole communicating with the inlet end of the oil outlet pipe assembly 2.

[0028] The first positioning boss 8A, near the part, is shaped to conform to the inner contour of the opening at one end of the part's inner cavity. Similarly, the second positioning boss 8B, near the part, is shaped to conform to the inner contour of the opening at the other end of the part's inner cavity. The first positioning boss 8A is detachably snap-fitted or threadedly connected to the fixed seat 5 near the part, and similarly, the second positioning boss 8B is detachably snap-fitted or threadedly connected to the movable seat 6 near the part. After the movable seat 6 moves near the fixed seat 5 to clamp both ends of the part, the first positioning boss 8A and the second positioning boss 8B cooperate to seal the inner cavity of the part. Then, the oil inlet pipe assembly 1 can inject oil into the inner cavity of the part through the central hole of the first positioning boss 8A, and the oil outlet pipe assembly 2 can discharge the oil from the inner cavity of the part through the central hole of the second positioning boss 8B.

[0029] The other parts of this embodiment are the same as those in Embodiment 1, so they will not be described again.

[0030] Example 3:

[0031] This embodiment is a further optimization based on the above embodiment 1 or 2, such as... Figure 1 and Figure 4 As shown, the linear drive mechanism includes a stop pressure ring 9, a lead screw 12, and a bracket. The bracket is located on the side of the movable seat 6 away from the fixed seat 5. The lead screw 12 is coaxially rotatably located at the end of the movable seat 6 away from the fixed seat 5. One end of the lead screw 12 is connected to the movable seat 6 through the stop pressure ring 9, and the lead screw 12 is engaged with the threaded hole on the bracket.

[0032] The bracket has mounting holes with nuts inside. A lead screw 12 is threadedly connected to the nut, and one end of the lead screw 12 is connected to the end of the movable seat 6 furthest from the part via a retaining ring 9, making the lead screw 12, movable seat 6, fixed seat 5, and the inner cavity of the part coaxial. By rotating the lead screw 12, and through the threaded connection between the lead screw 12 and the nut, the lead screw 12 drives the movable seat 6 to move closer to or further away from the fixed seat 5.

[0033] Furthermore, a force-applying lever 11 is provided at the end of the lead screw 12 away from the movable seat 6, and a hand ball 10 is provided at the end of the force-applying lever 11. By holding the hand ball 10, the lever 11 can be easily rotated, thereby driving the lead screw 12 to rotate with less effort.

[0034] The other parts of this embodiment are the same as those in Embodiment 1 or 2 above, so they will not be described again.

[0035] Example 4:

[0036] This embodiment is a further optimization based on any one of embodiments 1-3 above, such as... Figure 1 As shown, the oil inlet pipe assembly 1 includes an oil inlet pipe, an oil inlet valve, and a pressure gauge. The outlet end of the oil inlet pipe is connected to the clamping surface of the fixed base 5. An oil inlet valve and a pressure gauge are provided on the oil inlet pipe.

[0037] The oil inlet pipe is connected to an external oil tank. When filling with oil, the oil inlet valve is opened, and the oil enters the inner cavity of the part through the oil inlet pipe and the channel on the clamping surface of the fixed seat 5. At the same time, the oil filling pressure can be detected in real time by a pressure gauge to avoid the oil filling pressure being too high or too low.

[0038] The oil outlet pipe assembly 2 includes an oil outlet pipe and an oil outlet valve. The inlet end of the oil outlet pipe is connected to the clamping surface of the movable seat 6, and the oil outlet pipe is equipped with an oil outlet valve. The oil outlet pipe is connected to an external suction device. When draining oil, the oil outlet valve is opened, and the oil in the inner cavity of the part can be discharged through the channel on the clamping surface of the movable seat 6 and the oil outlet pipe.

[0039] The other parts of this embodiment are the same as any one of the embodiments 1-3 above, so they will not be described again.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A universal oil tightness clamp for oil pressure testing, comprising a mounting base plate (3), wherein a support base (7) is provided on the mounting base plate (3), characterized in that, The support base (7) has a fixed base (5) and a movable base (6) concentrically arranged at both ends. A linear drive mechanism is provided on the side of the movable base (6) away from the fixed base (5). The linear drive mechanism can drive the movable base (6) to move toward the fixed base (5) to clamp the part. An oil inlet pipe assembly (1) is provided on the clamping surface of the fixed base (5), and an oil outlet pipe assembly (2) is provided on the clamping surface of the movable base (6).

2. The universal oil-tight clamp for oil pressure testing according to claim 1, characterized in that, The fixed seat (5) is detachably provided with a first positioning boss (8A) on the side near the movable seat (6), and the movable seat (6) is detachably provided with a second positioning boss (8B) on the side near the fixed seat (5). The center of the first positioning boss (8A) is provided with a central hole that communicates with the outlet end of the oil inlet pipe assembly (1), and the center of the second positioning boss (8B) is provided with a central hole that communicates with the inlet end of the oil outlet pipe assembly (2).

3. A universal oil-tight clamp for oil pressure testing according to claim 2, characterized in that, The top of the mounting base plate (3) is provided with a guide rail (4), and the bottom of the movable seat (6) is slidably connected to the guide rail (4).

4. A universal oil-tight clamp for oil pressure testing according to claim 3, characterized in that, The linear drive mechanism includes a stop ring (9), a lead screw (12), and a bracket. The bracket is located on the side of the movable seat (6) away from the fixed seat (5). The lead screw (12) is coaxially rotatably located at the end of the movable seat (6) away from the fixed seat (5). One end of the lead screw (12) is connected to the movable seat (6) through the stop ring (9). The lead screw (12) is connected to the threaded hole on the bracket.

5. A universal oil-tight clamp for oil pressure testing according to claim 4, characterized in that, A force-applying lever (11) is provided on the end of the lead screw (12) away from the movable seat (6), and a hand ball (10) is provided at the end of the force-applying lever (11).

6. A universal oil-tight clamp for oil pressure testing according to any one of claims 1-5, characterized in that, The oil inlet pipe assembly (1) includes an oil inlet pipe, an oil inlet valve, and a pressure gauge. The outlet end of the oil inlet pipe is connected to the clamping surface of the fixed base (5). An oil inlet valve and a pressure gauge are provided on the oil inlet pipe.

7. A universal oil-tight clamp for oil pressure testing according to any one of claims 1-5, characterized in that, The oil outlet pipe assembly (2) includes an oil outlet pipe and an oil outlet valve. The inlet end of the oil outlet pipe is connected to the clamping surface of the movable seat (6), and an oil outlet valve is provided on the oil outlet pipe.

8. A universal oil-tight clamp for oil pressure testing according to any one of claims 1-5, characterized in that, The top of the mounting base plate (3) is provided with an openable and closable protective cover (13).

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