A high-precision ultra-low temperature liquid level gauge processing auxiliary positioning device

Abstract

The utility model discloses a kind of high-precision ultra-low temperature liquid level gauge processing auxiliary positioning devices, including base, the top of the base is fixedly connected with four horizontal support columns, the top of four horizontal support columns is fixedly connected with same U-shaped plate, the top of the base is fixedly connected with back frame, the top of the back frame is fixedly connected with pneumatic cylinder, the outer wall of pneumatic cylinder output end is fixedly connected with push plate.The utility model drives push plate linkage back plate through pneumatic cylinder, along chute guide by T-shaped column, drive V-shaped positioning piece automatic centering clamping ultra-low temperature liquid level gauge shell, without artificial repeatedly aligning, solve the problem that general fixture is low in efficiency, poor consistency, reduce artificial error;The structure of V-shaped positioning piece can be compatible with different diameters and slightly different ultra-low temperature liquid level gauge shell, compared with special rigid fixture, without customizing for specific model, reduce equipment cost, improve the flexibility of batch processing.

Description

Technical Field

[0001] This utility model relates to the field of positioning device technology, and in particular to an auxiliary positioning device for processing high-precision cryogenic liquid level gauges. Background Technology

[0002] High-precision cryogenic level gauges are widely used in storage, transportation, and monitoring systems for cryogenic media such as liquefied natural gas (LNG), liquid nitrogen, and liquid oxygen. Their core components are typically made of stainless steel or Invar alloy, requiring high precision in coaxiality, end-face perpendicularity, and the flatness of the mounting reference surface. During machining or sensor integration, unstable positioning or reference misalignment can easily lead to sealing failure, signal drift, or thermal stress concentration, severely impacting product performance and safety.

[0003] Currently, the industry generally uses two operating methods when processing such housings: one is to use general machine tool fixtures (such as precision flat-jaw vises or three-jaw chucks) for manual clamping, where the operator needs to repeatedly adjust the workpiece based on experience and use a dial indicator to align it; the other is to design special rigid fixtures for specific housing models, which are positioned by a set of contour brackets and then pressed from above with bolts or pressure plates.

[0004] However, these existing operating methods have significant drawbacks: general-purpose fixtures rely on manual alignment, which is inefficient and inconsistent, making it difficult to achieve rapid centering, and human error is the main quality risk; while dedicated fixtures are more targeted, they lack adaptive adjustment capabilities and cannot be compatible with similar products of different diameters or slight differences, resulting in poor flexibility and high cost. Therefore, we propose an auxiliary positioning device for high-precision ultra-low temperature level gauge processing to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an auxiliary positioning device for the processing of high-precision cryogenic level gauges.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An auxiliary positioning device for processing a high-precision cryogenic level gauge includes a base. Four horizontal support columns are fixedly connected to the top of the base. A U-shaped plate is fixedly connected to the top of each of the four horizontal support columns. A return frame is fixedly connected to the top of the base. A cylinder is fixedly connected to the top of the return frame. A push plate is fixedly connected to the outer wall of the cylinder's output end. A return plate is fixedly connected to one end of the push plate. Two trapezoidal grooves are formed on the inner wall of the return plate. Two trapezoidal blocks are slidably connected to the inner walls of each of the two trapezoidal grooves. V-shaped positioning elements are fixedly connected to each of the four trapezoidal blocks in pairs. V-shaped rubber pads are fixedly connected to the outer walls of the two V-shaped positioning elements. A positioning assembly is provided on the top of the U-shaped plate. Threaded holes are formed at the bottom of each of the four horizontal support columns. Horizontal foot posts are threadedly connected to the inner walls of each of the four threaded holes.

[0008] Preferably, the positioning component includes two T-shaped columns, the top of the U-shaped plate has two inclined grooves, the inner walls of the two inclined grooves are slidably connected to the outer walls of the two T-shaped columns respectively, the tops of the two T-shaped columns are fixedly connected to the bottoms of the two V-shaped positioning parts respectively, and the inside of the U-shaped plate has two mounting plates fixedly connected, which serve as the bearing platform for the housing of the cryogenic level gauge.

[0009] Preferably, the bottom of the U-shaped plate has a groove, the inner wall of the groove is slidably connected to the outer wall of the push plate, and the cylinder drives the push plate to move through the linear extension and retraction of the output end, providing stable power for the centering and clamping of the V-shaped positioning component.

[0010] Preferably, the bottom of the U-shaped plate is slidably connected to the top of the U-shaped plate, and the housing of the cryogenic level gauge is placed between the two V-shaped positioning parts.

[0011] Preferably, the bottom of each of the four horizontal legs is fixedly connected with a foot pad, which is made of non-slip and wear-resistant metal material to increase the friction between the device and the table surface.

[0012] Preferably, the outer wall of the base has four sliding holes, and the inner walls of the four sliding holes are slidably connected to the outer walls of the four horizontal legs.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] This solution uses a cylinder to drive a push plate that links with a return plate. A T-shaped column guides the plate along an inclined groove, causing a V-shaped positioning component to automatically center and clamp the cryogenic level gauge housing. This eliminates the need for repeated manual alignment, solving the problems of low efficiency and poor consistency of general-purpose fixtures and reducing human error. The V-shaped positioning component's structure is compatible with cryogenic level gauge housings of different diameters and slight variations. Compared to dedicated rigid clamps, it eliminates the need for customization for specific models, reducing equipment costs and increasing the flexibility of batch processing. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of an auxiliary positioning device for machining a high-precision cryogenic level gauge proposed in this utility model.

[0017] Figure 2 This is a cross-sectional structural schematic diagram of an auxiliary positioning device for machining a high-precision cryogenic level gauge proposed in this utility model.

[0018] Figure 3 This is a partial three-dimensional structural diagram of an auxiliary positioning device for machining a high-precision cryogenic level gauge proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of the back-shaped plate, V-shaped positioning component, V-shaped rubber pad and mounting plate structure of an auxiliary positioning device for processing a high-precision cryogenic level gauge proposed in this utility model.

[0020] In the diagram: 1. Base; 2. Horizontal support column; 3. U-shaped plate; 4. Reverse frame; 5. Cylinder; 6. Push plate; 7. Reverse plate; 8. Trapezoidal block; 9. V-shaped positioning component; 10. V-shaped rubber pad; 11. Inclined groove; 12. T-shaped column; 13. Laying plate; 14. Horizontal foot column; 15. Foot pad. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Depend on Figures 1-4 As shown, an auxiliary positioning device for processing a high-precision cryogenic level gauge is disclosed. The device includes a base 1, with multiple assembly holes on the outer wall of the base 1. These assembly holes can be connected to existing bolts to fix the base 1 on a horizontal device. Four horizontal support columns 2 are fixedly connected to the top of the base 1, forming a vertical support frame. The top of the four horizontal support columns 2 is fixedly connected to the same U-shaped plate 3. The U-shaped structure of the U-shaped plate 3 provides positioning and sliding space for the V-shaped positioning component 9 at the top, and also provides a groove sliding channel for the push plate 6 at the bottom.

[0023] A return frame 4 is fixedly connected to the top of the base 1, and a cylinder 5 is fixedly connected to the top of the return frame 4. A push plate 6 is fixedly connected to the outer wall of the output end of the cylinder 5. The cylinder 5 drives the push plate 6 to move through the linear extension and retraction of the output end, providing stable power for the centering and clamping of the V-shaped positioning part 9.

[0024] The bottom of the U-shaped plate 3 has a groove, and the inner wall of the groove is slidably connected to the outer wall of the push plate 6. One end of the push plate 6 is fixedly connected to the U-shaped plate 7. The bottom of the U-shaped plate 7 is slidably connected to the top of the U-shaped plate 3. The inner wall of the U-shaped plate 7 has two trapezoidal grooves, and the inner walls of the two trapezoidal grooves are slidably connected to two trapezoidal blocks 8. The trapezoidal blocks 8 are slidably engaged with the trapezoidal grooves of the U-shaped plate 7. The trapezoidal structure can prevent the plate from detaching from the groove during sliding and provide guidance for the V-shaped positioning part 9.

[0025] Four trapezoidal blocks 8 are fixedly connected to V-shaped positioning parts 9 in pairs. A cryogenic level gauge housing is placed between two V-shaped positioning parts 9. The V-shaped structure of the V-shaped positioning parts 9 can automatically adapt to cryogenic level gauge housings of different diameters to achieve rapid centering. V-shaped rubber pads 10 are fixedly connected to the outer walls of the two V-shaped positioning parts 9. The flexible material of the V-shaped rubber pads 10 can flexibly contact the housing surface when clamped, avoiding direct contact and scratching the housing surface.

[0026] The bottom of each of the four horizontal support columns 2 is provided with threaded holes, and the inner walls of the four threaded holes are threaded with horizontal foot columns 14. The bottom of each of the four horizontal foot columns 14 is fixedly connected with foot pads 15. The outer wall of the base 1 is provided with four sliding holes, and the inner walls of the four sliding holes are slidably connected to the outer walls of the four horizontal foot columns 14 respectively.

[0027] The top of the U-shaped plate 3 is provided with a positioning component, which includes two T-shaped columns 12. The top of the U-shaped plate 3 has two inclined grooves 11. The inner walls of the two inclined grooves 11 are slidably connected to the outer walls of the two T-shaped columns 12 respectively. The outer walls of the T-shaped columns 12 are slidably engaged with the inclined grooves 11. The T-shaped structure can prevent them from slipping out of the inclined grooves 11 during sliding, ensuring the reliability of the movement. The tops of the two T-shaped columns 12 are fixedly connected to the bottoms of the two V-shaped positioning parts 9 respectively. The inside of the U-shaped plate 7 is fixedly connected to two mounting plates 13, which serve as the bearing platform for the housing of the cryogenic level gauge.

[0028] Working principle: When machining and positioning the ultra-low temperature level gauge housing, the ultra-low temperature level gauge housing to be machined is first placed on top of the two mounting plates 13 and positioned between the two V-shaped positioning parts 9; then the cylinder 5 is started, and its output end pushes the plate 6 to move horizontally along the groove at the bottom of the U-shaped plate 3. The push plate 6 drives the U-shaped plate 7 and the two mounting plates 13 inside it to move forward synchronously.

[0029] The two V-shaped positioning pieces 9 slide towards the center along the two inclined grooves 11 at the top of the U-shaped plate 3. This movement is achieved by the guidance of the two T-shaped columns 12 in the two inclined grooves 11, so that the V-shaped positioning pieces 9 automatically center and clamp the ultra-low temperature level gauge housing.

[0030] The base 1 provides stable support through four horizontal support columns 2. The four horizontal foot columns 14 at the bottom can slide in the sliding holes of the base 1 and be adjusted by threads to adjust the overall level of the device. The foot pads 15 at the bottom provide anti-slip and support functions.

[0031] It should be noted that, in actual use, an existing PLC controller can be added. The PLC controller is electrically connected to cylinder 5 to facilitate the control of the overall operation.

[0032] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0033] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary positioning device for machining a high-precision cryogenic level gauge, comprising a base (1), characterized in that, The top of the base (1) is fixedly connected to four horizontal support columns (2), and the top of the four horizontal support columns (2) is fixedly connected to the same U-shaped plate (3). The top of the base (1) is fixedly connected to a return frame (4), and the top of the return frame (4) is fixedly connected to a cylinder (5). The outer wall of the output end of the cylinder (5) is fixedly connected to a push plate (6), and one end of the push plate (6) is fixedly connected to a return plate (7). The inner wall of the return plate (7) has two trapezoidal grooves, and the inner walls of the two trapezoidal grooves are slidably connected to two trapezoidal blocks (8). The four trapezoidal blocks (8) are fixedly connected to V-shaped positioning parts (9) in pairs. The outer walls of the two V-shaped positioning parts (9) are fixedly connected to V-shaped rubber pads (10). The top of the U-shaped plate (3) is provided with a positioning component. The bottom of the four horizontal support columns (2) is provided with threaded holes, and the inner walls of the four threaded holes are threadedly connected to horizontal foot posts (14).

2. The auxiliary positioning device for machining a high-precision cryogenic level gauge according to claim 1, characterized in that, The positioning component includes two T-shaped posts (12), and the top of the U-shaped plate (3) has two inclined grooves (11). The inner walls of the two inclined grooves (11) are slidably connected to the outer walls of the two T-shaped posts (12), and the tops of the two T-shaped posts (12) are fixedly connected to the bottoms of the two V-shaped positioning parts (9). The inside of the U-shaped plate (7) has two mounting plates (13).

3. The auxiliary positioning device for machining a high-precision cryogenic level gauge according to claim 1, characterized in that, The bottom of the U-shaped plate (3) is provided with a groove, and the inner wall of the groove is slidably connected to the outer wall of the push plate (6).

4. The auxiliary positioning device for machining a high-precision cryogenic level gauge according to claim 1, characterized in that, The bottom of the U-shaped plate (7) is slidably connected to the top of the U-shaped plate (3), and a cryogenic level gauge housing is placed between the two V-shaped positioning parts (9).

5. The auxiliary positioning device for machining a high-precision cryogenic level gauge according to claim 1, characterized in that, The bottom of each of the four horizontal support posts (14) is fixedly connected with a foot pad (15).

6. The auxiliary positioning device for machining a high-precision cryogenic level gauge according to claim 1, characterized in that, The outer wall of the base (1) is provided with four sliding holes, and the inner walls of the four sliding holes are slidably connected to the outer walls of the four horizontal foot posts (14).

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