A measuring device for a bypass valve sleeve

Abstract

This utility model relates to the field of bypass valve sleeve technology, and in particular to a measuring device for a bypass valve sleeve, comprising a sample body, a set screw with a tapered head, and a nut. The sample body has an axial through hole adapted to the set screw, and at least one notch is provided on the upper end of the sample body. The upper end of the sample body also has a reference measuring surface adapted to the shape of the inner hole of the bypass valve sleeve. One end of the set screw extends out of the sample body and is connected to the nut. The measuring device for the bypass valve sleeve of this utility model transforms the inconveniently measurable inner groove length of the bypass valve sleeve into a measurable outer length dimension, enabling rapid measurement and improving efficiency. Through indirect measurement, it realizes the measurement of the inner groove length of the bypass valve sleeve.

Description

Technical Field

[0001] This utility model relates to the field of bypass valve sleeve technology, and in particular to a measuring device for a bypass valve sleeve. Background Technology

[0002] Bypass valve sleeves are common components in hydraulic, petroleum machinery and other systems. During system operation, the bypass valve sleeve works in conjunction with the bypass valve to achieve precise control of the fluid, including the diversion or merging of the fluid, the adjustment of the flow rate of the main oil circuit and the bypass oil circuit, the distribution of system flow as needed, and the stable operation of each component. For example, when the load of the hydraulic system actuator changes, the flow rate is adjusted to maintain pressure stability.

[0003] However, measuring the inner groove length presents a significant challenge in the production of bypass valve sleeves. Current methods involve sampling and dissecting already machined workpieces. However, this method has several drawbacks. Firstly, it fails to adequately account for unavoidable factors in actual production, such as tool wear and tool replacement, making it difficult to guarantee measurement accuracy and consequently hindering effective control of the inner groove length. Secondly, dissecting the workpiece not only increases the complexity of the production process but also directly raises manufacturing costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a measuring device for a bypass valve sleeve, which can measure the length of the inner groove of the bypass valve sleeve.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model provides a measuring device for a bypass valve sleeve, which includes a sample body, a set screw with a tapered head, and a nut. The sample body has an axial through hole adapted to the set screw, and at least one notch is opened on the upper end of the sample body. The upper end of the sample body has a reference measuring surface adapted to the shape of the inner hole of the bypass valve sleeve. One end of the set screw extends out of the sample body and is connected to the nut.

[0006] Furthermore, the upper end of the sample body is provided with two symmetrically distributed notches.

[0007] Furthermore, the sample body includes an upper end, a middle part, and a lower end that are coaxially arranged. The notch is opened on the upper end. The middle part of the sample body includes a plurality of circumferentially distributed elastic connectors, and the upper end of each elastic connector is connected to the upper end, and the lower end of each elastic connector is connected to the lower end.

[0008] Furthermore, the set screw includes a cone head, a shaft connecting part, and a threaded fastening part arranged coaxially from top to bottom.

[0009] Furthermore, the top of the cone is provided with an internal hexagonal hole.

[0010] The beneficial effects of this utility model are: 1. The sample body is opened by using the principle of conical surface mating. When the nut is tightened, the conical head of the set screw moves along the axial through hole of the sample body, and the conical surface squeezes and opens the notch, so that the reference measuring surface of the sample body is in close contact with the inner groove wall of the bypass valve sleeve. This fitting method avoids the errors caused by insufficient contact in traditional measurement, ensures that the measuring reference is perfectly matched with the shape of the inner groove of the workpiece, and significantly improves the accuracy of dimensional measurement.

[0011] 2. The design adopts a combination structure of notch and cone head expansion. When the sample body is in the contracted state, its diameter is smaller than the inner groove diameter of the bypass valve sleeve, which makes it easy to quickly put into the bypass valve sleeve. Tightening the nut can achieve expansion and fit. There is no need for complicated positioning or adjustment steps, which simplifies the measurement process, makes operation simple, and is compatible with the inner groove of bypass valve sleeves of different sizes.

[0012] 3. Reduced measurement difficulty, suitable for complex internal groove scenarios. For bypass valve sleeve internal grooves with space constraints or complex shapes, traditional external clamping or insertion measuring tools may have difficulty making stable contact with the measuring surface. Through the internal support design, it can penetrate deep into the internal groove and fit tightly against the wall, effectively solving problems such as poor contact and positioning difficulties in complex internal groove measurements. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the assembly of the prototype body, set screw, and nut of this utility model; Figure 3 This is a schematic diagram of the structure of the prototype of this utility model; Figure 4 This is a schematic diagram of the structure of the set screw of this utility model; Figure 5 This is a schematic diagram of the structure of the nut of this utility model; Figure 6 This is a schematic diagram of the bypass valve sleeve of this utility model.

[0014] Explanation of reference numerals in the attached drawings: 1-bypass valve sleeve, 2-sample body, 21-upper end, 211-notch, 212-reference measuring surface, 22-middle part, 23-lower end, 3-set screw, 31-cone head, 311-internal hexagonal hole, 32-rod body connection part, 33-threaded fastening part, 4-nut. Detailed Implementation

[0015] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0016] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0017] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0018] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. The meaning of such spatial relative terms includes different orientations of the device in use or operation, in addition to the orientation depicted in the figure. For example, if the device in the figure is flipped, then an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0019] like Figures 1-6 As shown, the present invention provides a measuring device for a bypass valve sleeve, which includes a sample body 2, a set screw 3 with a tapered head 31, and a nut 4. The sample body 2 has an axial through hole adapted to the set screw 3, and at least one notch 211 is provided on the upper end 21 of the sample body 2. The upper end 21 of the sample body 2 has a reference measuring surface 212 adapted to the shape of the inner hole of the bypass valve sleeve 1. One end of the set screw 3 extends out of the sample body 2 and is connected to the nut 4.

[0020] In actual use, by consulting the bypass valve sleeve model, the inner groove diameter data of the bypass valve sleeve 1 is obtained. First, the sample body 2, the set screw 3, and the nut 4 are assembled. The distance from the inner groove diameter of the bypass valve sleeve 1 corresponding to the sample body 2 to the bottom of the nut is measured and recorded as B. The sample body 2 is placed into the bypass valve sleeve 1, and the outer circumferential surface of the sample body 2 is provided with a reference measuring surface 212 that matches the shape of the inner groove of the bypass valve sleeve 1. By inserting the set screw 3 with the tapered head 31 into the sample body 2 and tightening the nut 4, the tapered head 31 of the set screw 3 can be axially aligned with the axial through hole. The sample body 2 is moved and the notch 211 is opened by the conical surface to make the reference measuring surface 212 fit tightly against the inner groove wall of the bypass valve sleeve 1. When the reference measuring surface 212 of the sample body 2 fits tightly against the inner groove wall of the bypass valve sleeve 1, the distance from the bottom of the bypass valve sleeve 1 to the bottom of the nut 4 is measured by a height measuring instrument and recorded as C. At the same time, the height distance of the inner groove of the bypass valve sleeve 1 is recorded as A. The difference between the distance measured outside the bypass valve sleeve 1 and the distance from the fitting point to the bottom of the nut 4 is the height distance of the inner groove of the bypass valve sleeve 1, and the formula is A=BC.

[0021] In a preferred embodiment of this invention, the upper end 21 of the sample body 2 is provided with two symmetrically distributed notches 211.

[0022] In actual use, two symmetrically distributed notches 211 are provided at the upper end 21 of the sample body 2 to ensure uniform force distribution and avoid measurement errors caused by local deformation. The two symmetrical notches 211 divide the upper end 21 of the sample body 2 into two symmetrical elastic lobes. When the cone head 31 of the set screw 3 moves down along the axial through hole, the cone surface will generate an outward spreading force on the lobes. Due to the symmetrical distribution of the notches 211, the spreading force can be evenly applied to the two lobes, ensuring that the expansion amplitude of the lobes on both sides is completely consistent, and there will be no problem of unilateral over-expansion or unilateral under-expansion. The lobe structure formed by the two symmetrical notches 211 has a more stable elastic deformation range. When facing the small dimensional tolerances of the inner groove of the bypass valve sleeve 1 of different batches, the symmetrical lobes can pass through the uniform The uniform elastic expansion or contraction ensures a tight fit with the inner groove wall, eliminating the need for frequent replacement of sample bodies 2 of different specifications. The symmetrical notch 211 allows sample body 2 to be placed into the bypass valve sleeve 1 without deliberate orientation calibration; simply align the upper end 21 of sample body 2 with the inner groove for quick placement. After placement, tighten the nut 4, and the symmetrical petals will automatically and uniformly expand without additional adjustment of sample body 2 position to ensure fit, significantly shortening the operation time for a single measurement. Since the symmetrical notch 211 ensures uniform fit of the reference measurement surface 212, subsequent use of height measuring instruments, coordinate measuring machines, and other tools to read dimensions eliminates the need to repeatedly change measurement points to verify consistency; simply selecting two reference points in the symmetrical direction is sufficient to confirm data validity, simplifying the data acquisition and verification process.

[0023] In a preferred embodiment of this invention, the sample body 2 includes an upper end 21, a middle part 22, and a lower end 23 coaxially arranged. The notch 211 is opened on the upper end 21. The middle part 22 of the sample body 2 includes a plurality of circumferentially distributed elastic connectors, and the upper end of each elastic connector is connected to the upper end 21, and the lower end of each elastic connector is connected to the lower end 23.

[0024] In actual use, the coaxial structure allows the axial through-hole of the sample body 2 to pass through the upper end 21, middle part 22, and lower end 23, ensuring that the set screw 3 always moves along the axial direction as it passes through the upper end 21, middle part 22, and lower end 23. A notch 211 is provided at the upper end 21, and a reference measuring surface 212 adapted to the shape of the inner groove is directly provided at the upper end 21, making the upper end 21 a measuring unit that directly contacts the inner groove, while ensuring the accuracy of the reference surface. An elastic connector is only provided at the middle part 22 to prevent functional failure due to excessive elasticity at the upper end 21 or lower end 23. The lower end 23 has no notch or elastic structure, possessing sufficient rigidity to serve as a support base after the sample body 2 is placed into the bypass valve sleeve 1. On one hand, the lower end 23 fits against the bottom or inner wall of the bypass valve sleeve 1, ensuring that the sample body 2 does not wobble after placement; on the other hand, the lower end 23 provides a stable entry point for the set screw 3, simplifying the initial assembly operation.

[0025] In a preferred embodiment of this invention, the set screw 3 includes a cone head 31, a shaft connecting part 32, and a threaded fastening part 33 arranged coaxially from top to bottom.

[0026] In actual use, the coaxial structure ensures that the set screw 3 always moves linearly along the axial through hole of the sample body 2 when tightening / loosening the nut 4, without radial offset or jamming. The coaxial design avoids one-sided friction between the set screw 3 and the axial through hole of the sample body 2, ensuring long-term stability of the conical surface fit accuracy and rod body guiding accuracy, preventing uncontrolled opening force due to wear, and guaranteeing the long-term reliability of the measuring device. The conical structure of the cone head 31 can convert the axial force transmitted from the threaded fastening part 33 into a radial opening force, which is evenly applied to the notch 211 at the upper end 21 of the sample body 2. The more turns the nut 4 is tightened, the deeper the cone head 31 moves downward, the greater the opening force, and the more precise the expansion of the notch 211. This allows for precise control based on the internal structure of the bypass valve sleeve 1. The actual dimensions of the groove are finely adjusted to ensure proper fit. The diameter of the rod connecting part 32 is precisely matched with the inner diameter of the axial through hole of the sample body 2. When the cone head 31 moves down to open the sample body 2, the rod connecting part 32 can slide stably along the inner wall of the through hole, providing radial support for the cone head 31 and preventing the cone head 31 from tilting due to uneven force. This ensures that the expansion direction of the notch 211 is always perpendicular to the inner groove wall, guaranteeing the flatness of the reference measurement surface 212. The threaded fastening part 33 cooperates with the nut 4, which is the key to controlling the axial position of the set screw 3 and locking the open state, improving the stability and data reliability of the measurement process. Through coaxial accuracy assurance and segmented adaptation function, the controllability of the opening, positional stability and operational precision of the measurement process are achieved.

[0027] In a preferred embodiment of this invention, the top of the cone head 31 is provided with an internal hexagonal hole 311.

[0028] In practical use, the internal hexagonal hole 311 has the advantages of large contact area, stable torque transmission and non-slippage. During initial assembly, if only the nut 4 is tightened for positioning, the screw and the through hole may not be aligned. In this case, the set screw 3 can be fixed with an internal hexagonal wrench, and then the nut 4 can be tightened to ensure that the screw is assembled along the axis of the through hole. This avoids uneven wear and expansion of the cone 31 due to initial misalignment. This design provides support for the expansion control of the set screw 3 and the measurement reliability of the device through precise adjustment and convenient assembly. It not only solves the practical problems of insufficient displacement accuracy of the cone 31 and inconvenient assembly and maintenance, but also ensures the benchmark accuracy of indirect measurement in the inner groove of the bypass valve sleeve 1 from the details. It forms a functional synergy with the cone 31, rod connection 32 and threaded fastening part 33 of the set screw 3, and together improves the practicality and measurement accuracy of the device.

[0029] All technical features in this embodiment can be freely combined according to actual needs. The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

[0030] The above embodiments are preferred implementations of this utility model. In addition, other implementations are also included. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A measuring device for a bypass valve sleeve, characterized in that: The sample includes a sample body (2), a set screw (3) with a tapered head (31) and a nut (4). The sample body (2) has an axial through hole that matches the set screw (3), and at least one notch (211) is provided on the upper end of the sample body (2). The upper end of the sample body (2) has a reference measuring surface (212) that matches the shape of the inner hole of the bypass valve sleeve (1). One end of the set screw (3) extends out of the sample body (2) and is connected to the nut (4).

2. The measuring device for a bypass valve sleeve according to claim 1, characterized in that: The upper end (21) of the sample body (2) is provided with two symmetrically distributed notches (211).

3. The measuring device for a bypass valve sleeve according to claim 1, characterized in that: The sample body (2) includes an upper end (21), a middle part (22) and a lower end (23) arranged coaxially. The notch (211) is opened on the upper end (21). The middle part (22) of the sample body (2) includes a plurality of circumferentially distributed elastic connectors, and the upper end of each elastic connector is connected to the upper end (21), and the lower end of each elastic connector is connected to the lower end (23).

4. The measuring device for a bypass valve sleeve according to claim 1, characterized in that: The set screw (3) includes a cone head (31), a shaft connecting part (32), and a threaded fastening part (33) arranged coaxially from top to bottom.

5. The measuring device for a bypass valve sleeve according to claim 4, characterized in that: The top of the cone (31) is provided with an internal hexagonal hole (311).

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