Variable displacement pump swing ring perpendicularity detection device

Abstract

The utility model relates to, more specifically, a kind of variable pump swing ring perpendicularity detection device. Including detection base plate, tool bearing column, positioning cylinder subassembly, electronic detection component and detection control component, detection base plate adopts plane rectangular plate structure, tool bearing column is fixedly set on the surface of detection base plate, the swing ring detected is placed on tool bearing column, positioning cylinder subassembly is set on detection base plate, electronic detection component and detection control component are both set on detection base plate by bolt, electronic detection component and detection control component position correspondingly set. The device is accurately matched by electronic detection component and detection control component, and the non-contact high-precision detection of swing ring perpendicularity is realized. The utility model is mainly applied to variable pump swing ring perpendicularity detection aspect.

Description

Technical Field

[0001] This utility model relates, and more specifically, to a device for detecting the verticality of the swing ring of a variable pump. Background Technology

[0002] Variable displacement pumps are core power components of hydraulic systems, widely used in engineering machinery, aerospace, and other fields. Their flow regulation relies on an internal core component, the swing ring. The perpendicularity of the swing ring directly determines the flow accuracy, volumetric efficiency, and service life of the variable displacement pump. Excessive perpendicularity can lead to accelerated component wear, increased hydraulic oil leakage, and even equipment vibration failure. Therefore, swing ring perpendicularity testing is a critical process in the production and maintenance of variable displacement pumps, but existing testing technologies have significant shortcomings.

[0003] Manual inspection using tools such as dial indicators requires high skill levels; hand tremors and positioning deviations can easily lead to data errors, failing to meet high-precision requirements. Current inspection technologies suffer from poor versatility, low accuracy, low efficiency, and difficulty in traceability, hindering improvements in the quality and production efficiency of variable pumps. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides a variable pump swing ring verticality detection device. This device is highly versatile, accurate, and automated, enabling efficient and accurate detection of the swing ring verticality.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A variable pump swing ring verticality detection device includes a detection base plate, a tooling support column, a positioning cylinder assembly, an electronic detection assembly, and a detection control assembly. The detection base plate adopts a planar rectangular plate structure. The tooling support column is fixedly installed on the surface of the detection base plate. The swing ring to be detected is placed on the tooling support column. The positioning cylinder assembly is installed on the detection base plate. The electronic detection assembly and the detection control assembly are both bolted to the detection base plate. The electronic detection assembly and the detection control assembly are positioned correspondingly.

[0006] A placement platform is movably inserted above the tooling support column. Both the tooling support column and the placement platform are cylindrical structures, and the diameter of the placement platform is smaller than the diameter of the tooling support column.

[0007] The positioning cylinder assembly includes a cylinder base plate, a cylinder, a telescopic top plate, a T-shaped plate, and a positioning post. The cylinder base plate is bolted to the detection base plate, the cylinder is fixedly mounted on the cylinder base plate, the telescopic top plate is connected to the movable end of the cylinder, the T-shaped plate is fixedly mounted on the telescopic top plate, and the positioning post is mounted on the T-shaped plate.

[0008] The telescopic top plate is set perpendicular to the detection base plate, and the positioning column is set parallel to the detection base plate.

[0009] The T-shaped plate has mounting holes at different horizontal heights, and the positioning post is mounted on the T-shaped plate through the mounting holes.

[0010] The electronic detection assembly includes a first L-shaped mounting plate and an electronic detector. The first L-shaped mounting plate is bolted to the detection base plate, and the electronic detector is horizontally mounted on the first L-shaped mounting plate.

[0011] The detection control component includes a second L-shaped mounting plate and a detection top block. The second L-shaped mounting plate is bolted to the detection base plate. The second L-shaped mounting plate has mounting holes at different horizontal height positions. The detection top block is mounted on the second L-shaped mounting plate through the mounting holes.

[0012] The detection top block is coaxially arranged with the electronic detector.

[0013] The bottom of the detection base plate is equipped with support legs.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: Through the precise coordination of the electronic detection component and the detection control component, non-contact, high-precision detection of the perpendicularity of the swing ring is achieved. The detection top block and the electronic detector are coaxially aligned, ensuring accurate reception of the detection signal and effectively avoiding measurement errors caused by axial misalignment. Simultaneously, the positioning cylinder assembly stably positions the swing ring, preventing workpiece displacement during detection and ensuring the repeatability and reliability of the detection results. The tooling support column and support clamp adopt a movable insertion design, and the support clamp can be replaced to accommodate swing rings with different inner diameters. The T-shaped plate and the detection control component are equipped with multi-height mounting holes, allowing adjustment of the mounting height of the positioning column and the detection top block to accommodate swing rings of different thicknesses and sizes. The positioning cylinder assembly achieves automatic positioning through an external pneumatic control system, eliminating the need for manual fixing and reducing human error and labor intensity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from another angle; Figure 3 This is a top view of the present invention; Figure 4 This is a side view of the present invention; Figure 5 This is a schematic diagram of the tooling support column in this utility model; In the diagram: 1 is the detection base plate, 2 is the support leg, 3 is the tooling support column, 4 is the support platform, 5 is the positioning cylinder assembly, 6 is the cylinder base plate, 7 is the cylinder, 8 is the telescopic top plate, 9 is the T-shaped plate, 10 is the positioning column, 11 is the electronic detection assembly, 12 is the first L-shaped mounting plate, 13 is the electronic detector, 14 is the detection control assembly, 15 is the second L-shaped mounting plate, and 16 is the detection top block. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0018] like Figures 1 to 5 As shown, a variable pump swing ring verticality testing device includes a testing base plate 1, a tooling support column 3, a positioning cylinder assembly 5, an electronic testing assembly 11, and a testing control assembly 14. The testing base plate 1 adopts a planar rectangular plate structure, which is treated to ensure sufficient load-bearing capacity and stability. Threaded holes are evenly distributed on the plate surface to facilitate the installation and position adjustment of each component. The tooling support column 3 is fixedly mounted on the surface of the testing base plate 1, specifically connected to the testing base plate 1 by welding. After welding, flaw detection is performed to ensure welding strength. The top of the column is rounded to avoid scratching the swing ring to be tested. The swing ring to be tested is placed on the tooling support column 3. For example, when testing the swing ring of a certain type of variable pump, its inner diameter is matched with the top of the tooling support column 3. The swing ring is positioned to ensure that its center is coaxial with the center of the tooling support column 3. The positioning cylinder assembly 5 is set on the detection base plate 1 to position and fix the swing ring placed on the tooling support column 3, preventing the swing ring from shifting during the detection process. The electronic detection assembly 11 and the detection control assembly 14 are both bolted to the detection base plate 1 and used with spring washers and flat washers to ensure a firm connection. The electronic detection assembly 11 and the detection control assembly 14 are positioned correspondingly, specifically meaning that the detection end of the electronic detection assembly 11 and the mating end of the detection control assembly 14 are on the same straight line in the horizontal direction, and the distance between them can be adjusted according to the size of the swing ring. For example, when detecting a certain type of swing ring, the distance between the two is adjusted to fit the outer diameter of the swing ring. Preferably, a mounting plate 4 is movably inserted above the tooling support column 3. The top of the tooling support column 3 has a blind hole, and the bottom of the mounting plate 4 has a cylindrical section that matches the blind hole. The two are fitted together to facilitate the insertion and removal of the mounting plate 4 to accommodate swing rings with different inner diameters. For example, when testing a swing ring with a specific inner diameter, the corresponding mounting plate 4 can be replaced. Both the tooling support column 3 and the mounting plate 4 are cylindrical structures. The diameter of the mounting plate 4 is smaller than the diameter of the tooling support column 3. This structural design allows the mounting plate 4 to form a stepped structure after being installed on the tooling support column 3, which plays a certain limiting role for the swing ring. Preferably, the positioning cylinder assembly 5 includes a cylinder base plate 6, a cylinder 7, a telescopic top plate 8, a T-shaped plate 9, and a positioning post 10. The cylinder base plate 6 is bolted onto the detection base plate 1. The cylinder base plate 6 is a rectangular steel plate with mounting holes for bolt fixing. The cylinder 7 is fixedly mounted on the cylinder base plate 6 and connected to it by bolts. The air inlet and outlet of the cylinder 7 are connected to air pipes and connected to an external pneumatic control system to achieve extension and retraction control of the cylinder piston rod. The telescopic top plate 8 is connected to the movable end of the cylinder 7 and fixed to the threaded hole at the top of the piston rod by an internal hex bolt. A rubber gasket is provided between the connecting surfaces. The T-shaped plate 9 is fixedly mounted on the telescopic top plate 8. It is made of horizontal and vertical plates welded together. After welding, the entire plate is sprayed with paint and fixed to the telescopic top plate 8 with bolts. The positioning post 10 is set on the T-shaped plate 9. One end is machined with external threads to connect with the threaded hole on the T-shaped plate 9. The other end is hemispherical. During testing, the hemispherical end of the positioning post 10 contacts the outer circle surface of the swing ring to achieve positioning of the swing ring. For example, when testing a certain type of swing ring, the piston rod of the cylinder 7 extends and drives the positioning post 10 to move until it is in contact with the outer circle surface of the swing ring. At this time, the positioning post 10 forms a radial positioning of the swing ring. Preferably, the telescopic top plate 8 is set perpendicular to the detection base plate 1. Specifically, both the upper and lower surfaces of the telescopic top plate 8 are perpendicular to the upper surface of the detection base plate 1, with the error controlled within a reasonable range. This can be calibrated using a dial indicator. The positioning column 10 is set parallel to the detection base plate 1, meaning the axis of the positioning column 10 is parallel to the upper surface of the detection base plate 1, with the parallelism error controlled within a reasonable range. This setting ensures that the positioning column 10 accurately positions the swing ring, avoiding the impact of angular deviation on the detection results. For example, if the positioning column 10 is not parallel to the detection base plate 1 during the detection process, the force exerted by the positioning column 10 on the swing ring will be tilted, potentially causing the swing ring to shift and thus affecting the accuracy of the perpendicularity detection. Preferably, the T-shaped plate 9 is provided with mounting holes at different horizontal heights. Specifically, mounting holes are spaced apart on the longitudinal plate of the T-shaped plate 9. The positioning post 10 is set on the T-shaped plate 9 through the mounting holes. The installation height of the positioning post 10 can be adjusted according to the thickness of the swing ring to be tested. For example, when testing a swing ring of a certain model with a specific thickness, the positioning post 10 is installed at the mounting hole at the corresponding height so that the axis of the positioning post 10 is at the same horizontal height as the central axis of the swing ring to ensure the positioning effect. If testing a swing ring of other thicknesses, the positioning post 10 is installed at the mounting hole at the appropriate height to match the center height of the swing ring. Preferably, the electronic detection component 11 includes a first L-shaped mounting plate 12 and an electronic detector 13. The first L-shaped mounting plate 12 is bolted onto the detection base plate 1 and consists of a vertical plate and a horizontal plate. The vertical plate has an elongated hole, and the overall height of the first L-shaped mounting plate 12 can be adjusted by connecting it to the detection base plate 1 with bolts. The electronic detector 13 is horizontally mounted on the first L-shaped mounting plate 12 and uses a laser displacement sensor. It is fixed to the horizontal plate of the first L-shaped mounting plate 12 by a special clamp. The sensor's detection head faces the detection control component 14, and the central axis of the detection head is parallel to the upper surface of the detection base plate 1. During detection, the laser displacement sensor can detect the change in distance between itself and the detection top block 16 in real time, thereby determining the verticality of the swing ring. For example, when the verticality of the swing ring meets the requirements, the distance value detected by the sensor is stable at the set value, and the error is controlled within a reasonable range. If the swing ring is tilted, the distance value will change, and if it exceeds the error range, it will be judged as unqualified. Preferably, the detection control component 14 includes a second L-shaped mounting plate 15 and a detection top block 16. The second L-shaped mounting plate 15 is bolted onto the detection base plate 1, and its structure is similar to that of the first L-shaped mounting plate 12. The vertical plate also has elongated holes to facilitate adjustment of the overall height to match the height of the electronic detection component 11. The second L-shaped mounting plate 15 has mounting holes at different horizontal heights, specifically, mounting holes are spaced apart on the horizontal plate. The detection top block 16 is mounted on the second L-shaped mounting plate 15 through the mounting holes. It is made of wear-resistant material to avoid wear affecting detection accuracy over long-term use. The detection top block 16 is cylindrical in shape, with an external thread at one end that connects with the threaded hole on the second L-shaped mounting plate 15. The end face of the other end is polished to ensure good contact with the detection signal of the electronic detector 13. For example, when detecting a certain type of swing ring, the detection top block 16 is installed at the mounting hole at the corresponding height so that it is at the same horizontal height as the detection head of the electronic detector 13. Preferably, the detection top block 16 and the electronic detector 13 are coaxially arranged, that is, the axis of the detection top block 16 is completely coincident with the central axis of the detection head of the electronic detector 13. The coaxiality error is controlled within a reasonable range and can be calibrated by a dial indicator and a mandrel. This arrangement can ensure that the detection signal emitted by the electronic detector 13 is accurately applied to the end face of the detection top block 16, avoiding inaccurate detection data due to axis offset. For example, if the two are not coaxial, the laser beam may irradiate the side of the detection top block 16, causing the sensor to be unable to receive the reflected signal normally, thus failing to obtain accurate distance data and affecting the judgment of the verticality detection result.

[0019] Preferably, the bottom of the testing base plate 1 is provided with support legs 2. There are four support legs 2, which are located at the four corners of the bottom of the testing base plate 1. The top of the support legs is connected to the testing base plate 1 by welding, and the bottom is equipped with adjustable feet. The bottom of the adjustable feet is provided with rubber pads for anti-slip and shock absorption. By adjusting the height of the adjustable feet, the upper surface of the testing base plate 1 can be kept horizontal. Specifically, a level can be used for inspection and adjustment. For example, when installing the equipment, the level is placed in the center of the testing base plate 1. If the bubble of the level is biased to one side, it means that side is too low. The adjustable feet of the support legs 2 on that side can be rotated to raise the height of that side until the bubble of the level is in the center position, ensuring that the testing base plate 1 is horizontal and providing an accurate benchmark for subsequent verticality inspection.

[0020] The above description only details the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.

Claims

1. A device for detecting the verticality of a variable pump swing ring, characterized in that: The device includes a detection base plate (1), a tooling support column (3), a positioning cylinder assembly (5), an electronic detection assembly (11), and a detection control assembly (14). The detection base plate (1) adopts a planar rectangular plate structure. The tooling support column (3) is fixedly installed on the surface of the detection base plate (1). The swing ring to be detected is placed on the tooling support column (3). The positioning cylinder assembly (5) is installed on the detection base plate (1). The electronic detection assembly (11) and the detection control assembly (14) are both installed on the detection base plate (1) by bolts. The electronic detection assembly (11) and the detection control assembly (14) are positioned correspondingly.

2. The variable pump swing ring verticality detection device according to claim 1, characterized in that: A placement platform (4) is movably inserted above the tooling support column (3). Both the tooling support column (3) and the placement platform (4) adopt a cylindrical structure, and the diameter of the placement platform (4) is smaller than the diameter of the tooling support column (3).

3. The variable pump swing ring verticality detection device according to claim 1, characterized in that: The positioning cylinder assembly (5) includes a cylinder base plate (6), a cylinder (7), a telescopic top plate (8), a T-shaped plate (9), and a positioning post (10). The cylinder base plate (6) is bolted onto the detection base plate (1). The cylinder (7) is fixedly mounted on the cylinder base plate (6). The telescopic top plate (8) is connected to the movable end of the cylinder (7). The T-shaped plate (9) is fixedly mounted on the telescopic top plate (8). The positioning post (10) is mounted on the T-shaped plate (9).

4. The variable pump swing ring verticality detection device according to claim 3, characterized in that: The telescopic top plate (8) is set perpendicular to the detection base plate (1), and the positioning column (10) is set parallel to the detection base plate (1).

5. The variable pump swing ring verticality detection device according to claim 3, characterized in that: The T-shaped plate (9) has mounting holes at different horizontal heights, and the positioning post (10) is mounted on the T-shaped plate (9) through the mounting holes.

6. The variable pump swing ring verticality detection device according to claim 1, characterized in that: The electronic detection assembly (11) includes a first L-shaped mounting plate (12) and an electronic detector (13). The first L-shaped mounting plate (12) is mounted on the detection base plate (1) by bolts, and the electronic detector (13) is horizontally mounted on the first L-shaped mounting plate (12).

7. The variable pump swing ring verticality detection device according to claim 6, characterized in that: The detection control component (14) includes a second L-shaped mounting plate (15) and a detection top block (16). The second L-shaped mounting plate (15) is bolted to the detection base plate (1). The second L-shaped mounting plate (15) has mounting holes at different horizontal heights. The detection top block (16) is mounted on the second L-shaped mounting plate (15) through the mounting holes.

8. The variable pump swing ring verticality detection device according to claim 7, characterized in that: The detection top block (16) is coaxially arranged with the electronic detector (13).

9. The variable pump swing ring verticality detection device according to claim 1, characterized in that: The bottom of the detection base plate (1) is provided with support legs (2).

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