Assembly device and assembly method for the upper right connecting block of the vertical valve

Abstract

This invention provides an assembly device and method for the right connecting block of a vertical valve. The assembly device includes a bracket, multiple linear first guide rods, a drive assembly, and a pressing component. The bracket includes a base plate. All the first guide rods are vertically mounted on the plane of the base plate and are parallel to each other. Each first guide rod corresponds to a mounting hole of the right connecting block. The diameter of each first guide rod is clearance-fitted with the inner diameter of the bearing installed in the corresponding mounting hole of the right connecting block. The drive assembly is mounted on the bracket. The pressing component is driven to move towards the base plate to press the bearing into the mounting hole of the right connecting block. This invention can improve the accuracy, pass rate, and service life of the assembly of the right connecting block and the sliding bearing of the vertical valve.

Description

Technical Field

[0001] This invention belongs to the field of vertical valve mechanical assembly technology, specifically relating to an assembly device and assembly method for the upper right connecting block of a vertical valve. Background Technology

[0002] In the production process of vertical valve products, four sliding bearings need to be pressed into the mounting holes of the right connecting block. Existing technologies typically employ direct press-fitting or conventional tooling press-fitting methods. Direct press-fitting relies on the machining accuracy of the mounting holes when pressing the bearings into them. Conventional tooling press-fitting uses simple locating pins or molds. Both assembly methods have the following problems: 1. Due to machining errors in the mounting holes of the right connecting block and the tolerances of the bearing outer diameter, bearings in the same mounting hole are prone to misalignment during assembly, and bearings in different mounting holes may not have parallel central axes. Therefore, the pass rate of right connecting blocks assembled using existing processes is low (below 80%), often resulting in jamming and rapid wear. Poor concentricity and parallelism lead to increased friction during valve movement, accelerating wear between the bearings and the right connecting block, resulting in a short lifespan. Furthermore, existing equipment lacks dynamic correction, making it impossible to adjust the relative position of the bearings and the right connecting block in real time during press-fitting. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an assembly device and assembly method for the upper right connecting block of a vertical valve. The present invention can improve the accuracy, pass rate and service life of the assembly of the upper right connecting block of a vertical valve and the sliding bearing.

[0004] To solve the above technical problems, the present invention provides an assembly device for a right connecting block on a vertical valve, comprising: a bracket including a base plate; multiple straight first guide rods, all of which are vertically mounted on the plane of the base plate and parallel to each other, each first guide rod corresponding to a mounting hole of the right connecting block, the diameter of each first guide rod being clearance-fitted with the inner diameter of a bearing installed in the corresponding mounting hole of the right connecting block, the straightness tolerance of the first guide rod being 0.02mm; the parallelism tolerance between the multiple first guide rods being 0.02mm; the diameter of the first guide rods being determined according to the following rules: ; in, The diameter of the first guide rod is... This is the minimum inner diameter of the bearing in the mounting hole corresponding to the first guide rod in the right connecting block. The tolerance zone width is defined as the inner diameter of the bearing in the mounting hole corresponding to the first guide rod in the right connecting block, and the tolerance grade of the diameter of the first guide rod is not lower than IT5; a drive assembly is mounted on the bracket; and a pressing member is driven to connect with the drive assembly, the drive assembly driving the pressing member to move toward the base plate to press the bearing sleeved on the first guide rod into the mounting hole of the right connecting block sleeved on the first guide rod along the axial direction of the first guide rod.

[0005] Furthermore, the first guide rod is made of 40Cr alloy structural steel, heat-treated to a Brinell hardness of HBW220-250, and the sliding fit outer circular surface of the first guide rod is plated with a hard chrome plating.

[0006] Furthermore, the base plate is provided with multiple mounting holes, the central axis of each mounting hole is perpendicular to the mounting surface of the base plate, and a stepped shaft structure is provided at one end of the first guide rod mounted on the base plate. The small diameter end of the stepped shaft structure is located at the end of the first guide rod, and the large diameter section of the stepped shaft structure is larger than the diameter of the mounting hole. The stepped surface of the stepped structure is perpendicular to the axis of the first guide rod. When the first guide rod is installed in the mounting hole, the small diameter section of the stepped shaft structure is in clearance fit with the mounting hole, and the stepped surface of the first guide rod contacts the base plate.

[0007] Furthermore, the mounting end of the first guide rod is provided with an annular scale mark, and the plane on which the annular scale mark is located is perpendicular to the axis of the first guide rod.

[0008] Furthermore, the flatness tolerance of the mounting surface of the base plate is 0.02mm.

[0009] Furthermore, the pressing component is plate-shaped, with its pressing surface parallel to the mounting surface of the base plate. The pressing component has multiple guide holes, each corresponding to a first guide rod. When the driving assembly drives the pressing component to move toward the base plate, the first guide rod passes through the corresponding guide hole axially.

[0010] Furthermore, the bracket also includes multiple second guide rods, which are vertically installed on the plane of the base plate. The pressing component is provided with multiple through holes, and each second guide rod passes through a corresponding through hole and slides in cooperation with the pressing component.

[0011] Furthermore, a linear bearing is press-fitted into each through hole, and the pressing element is sleeved on the corresponding second guide rod through the linear bearing, so that the pressing element and the second guide rod form a sliding connection.

[0012] Furthermore, the point of application of the resultant pressure of the pressing element coincides with the pressure center formed by all the first guide rods, and the position where the drive assembly applies pressure to the pressing element is located at the center of gravity of the pressing element.

[0013] Furthermore, the drive assembly includes a mounting plate, a drive device, and a drive rod. The mounting plate is fixed on the bracket and is arranged parallel to the mounting surface of the base plate. The drive device is mounted on the mounting plate. The first end of the drive rod is drivenly connected to the drive device, and the second end of the drive rod is fixedly connected to the pressing member.

[0014] The present invention also provides a method for assembling the right connecting block of a vertical valve, using the assembly device for the right connecting block of the vertical valve described above; the assembly method includes: fitting a bearing to be installed into the right connecting block onto each first guide rod; fitting the right connecting block onto the first guide rod; fitting another bearing to be installed into the right connecting block onto each first guide rod; controlling the drive assembly to drive the pressing member to move toward the base plate, and the pressing member pressing each bearing into the corresponding mounting hole of the right connecting block.

[0015] Furthermore, when controlling the drive assembly to drive the pressing member to move toward the base plate, first control the pressing member to move toward the base plate to the first position, and then control the pressing member to move toward the base plate to the second position. The first position satisfies that the drive assembly is in an unloaded state, and the second position satisfies that the distance between the pressing member and the base plate is equal to the height of the right connecting block.

[0016] The beneficial effects of this invention are: The assembly device for the right connecting block of the vertical valve of the present invention comprises multiple first guide rods vertically mounted on the plane of the base plate and parallel to each other. Each first guide rod corresponds one-to-one with the mounting hole of the right connecting block. The diameter of each first guide rod is clearance-fitted with the inner diameter of the bearing installed in the corresponding mounting hole of the right connecting block. The tolerances of the diameter of the first guide rod and the minimum inner diameter of the corresponding bearing, the straightness tolerance of the first guide rod, and the parallelism tolerance among the multiple first guide rods ensure that the first guide rod serves as an ideal concentric axis for the bearing in the mounting hole of the right connecting block. When the bearing and the right connecting block are fitted onto the first guide rod, The first guide rod acts as the "core" for the bearing and the mounting hole of the right connecting block. The inner hole of the bearing is forcibly constrained by the first guide rod, so that the central axis of the bearing inner hole coincides with the central axis of the first guide rod, eliminating the influence of the hole position deviation of the right connecting block. When the drive assembly drives the pressing part to move towards the base plate to press the bearing into the mounting hole of the right connecting block, the bearing enters the corresponding mounting hole of the right connecting block according to the high-precision trajectory of the first guide rod. This ensures that during and after installation, the central axis of the bearing in the same mounting hole is collinear with the central axis of the mounting hole, and the central axes of the bearings in different mounting holes are parallel.

[0017] This invention improves the assembly precision of the right connecting block. The concentricity of two bearings in the same mounting hole is ≤0.02mm, and the parallelism of the central axes of bearings in different mounting holes is ≤0.02mm. Under traditional processes, 12 out of 25 units assembled are defective, while with the assembly device of this invention, only 7 out of 151 units assembled are defective. The assembly pass rate is increased from less than 80% under traditional processes to over 95%, significantly improving the pass rate of the right connecting block assembly in one go. Due to the mandrel action of the first guide rod, the bearing is pressed smoothly and coaxially into the corresponding mounting hole of the right connecting block in real time during the pressing process, eliminating assembly stress and off-center load. This significantly reduces the frictional resistance of the vertical valve during operation, thereby significantly extending the service life of the bearing and the vertical valve. This invention adopts mechanized operation, reducing reliance on the skills of operators, achieving standardized and consistent precision assembly, and improving process stability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure.

[0019] Figure 1 This is a schematic diagram of the structure of the right connecting block of a vertical valve during installation in the prior art; Figure 2 This is a cross-sectional view of the right connecting block of a vertical valve in the prior art when it is installed. Figure 3 This is a schematic diagram of the assembly device for the upper right connecting block of the vertical valve in an embodiment of this disclosure; Figure 4 This is a front view of the assembly device for the upper right connecting block of the vertical valve in an embodiment of this disclosure; Figure 5 This is a right view of the assembly device for the upper right connecting block of the vertical valve in an embodiment of this disclosure; Figure 6 This is a partial cross-sectional view of the assembly process of the assembly device for the upper right connecting block of the vertical valve in an embodiment of this disclosure. Figure 7 This is a partial cross-sectional view of the assembly device for the upper right connecting block of the vertical valve in this embodiment of the present disclosure after assembly. Figure 8 This is a schematic diagram of the pressing component in an embodiment of this disclosure.

[0020] Figure label: The vertical valve right connecting block assembly device 100, bracket 10, base plate 11, second guide rod 12, multiple first guide rods 20, drive assembly 30, mounting plate 31, drive device 32, drive rod 33, telescopic rod 331, guide sleeve 332, pressing part 40, guide hole 41, through hole 42, linear bearing 43, right connecting block 200, mounting hole 210, bearing 300, plate 400, and pressing part 500. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0022] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” indicate that the element or object preceding “comprising” or “including” encompasses the element or object listed following “comprising” or “including” and its equivalents, and do not exclude other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0023] This disclosure provides an assembly device for a right connecting block of a vertical valve. The assembly device includes: a bracket, multiple straight first guide rods, a drive assembly, and a pressing component. The bracket includes a base plate. All the first guide rods are vertically mounted on the plane of the base plate and are parallel to each other. Each first guide rod corresponds one-to-one with a mounting hole in the right connecting block. The diameter of each first guide rod is clearance-fitted with the inner diameter of a bearing installed in the corresponding mounting hole in the right connecting block. The straightness tolerance of the first guide rod is 0.02 mm. The parallelism tolerance between the multiple first guide rods is 0.02 mm. The diameter of the first guide rod is determined according to the following rules: ; in, The diameter of the first guide rod is... This is the minimum inner diameter of the bearing in the mounting hole corresponding to the first guide rod in the right connecting block. The tolerance zone width is the bearing inner diameter in the mounting hole corresponding to the first guide rod in the right connecting block. The tolerance grade of the diameter of the first guide rod is not lower than IT5. The drive assembly is mounted on the bracket. The pressing member is driven to connect with the drive assembly. The drive assembly drives the pressing member to move toward the base plate to press the bearing sleeved on the first guide rod into the mounting hole of the right connecting block sleeved on the first guide rod along the axial direction of the first guide rod.

[0024] The assembly device for the right connecting block of the vertical valve in this embodiment includes multiple first guide rods vertically mounted on the plane of the base plate and parallel to each other. Each first guide rod corresponds one-to-one with the mounting hole of the right connecting block. The diameter of each first guide rod is clearance-fitted with the inner diameter of the bearing installed in the corresponding mounting hole of the right connecting block. The tolerances of the diameter of the first guide rod and the minimum inner diameter of the corresponding bearing, the straightness tolerance of the first guide rod, and the parallelism tolerance among the multiple first guide rods ensure that the first guide rods serve as ideal concentric shafts for the bearings in the mounting holes of the right connecting block. When the bearing and the right connecting block are fitted onto the first guide rods... At the same time, the first guide rod acts as the "core" of the bearing and the mounting hole of the right connecting block. The inner hole of the bearing is forcibly constrained by the first guide rod, so that the central axis of the bearing inner hole coincides with the central axis of the first guide rod, eliminating the influence of the hole position deviation of the right connecting block. When the drive assembly drives the pressing part to move towards the base plate to press the bearing into the mounting hole of the right connecting block, the bearing enters the corresponding mounting hole of the right connecting block according to the high-precision trajectory of the first guide rod. This ensures that during the installation process and after the installation is completed, the central axis of the bearing in the same mounting hole is collinear with the central axis of the mounting hole, and the central axes of the bearings in different mounting holes are parallel.

[0025] This invention improves the assembly precision of the right connecting block. The concentricity of two bearings in the same mounting hole is ≤0.02mm, and the parallelism of the central axes of bearings in different mounting holes is ≤0.02mm. Under traditional processes, 12 out of 25 units assembled are defective, while with the assembly device of this invention, only 7 out of 151 units assembled are defective. The assembly pass rate is increased from less than 80% under traditional processes to over 95%, significantly improving the pass rate of the right connecting block assembly in one go. Due to the mandrel action of the first guide rod, the bearing is pressed smoothly and coaxially into the corresponding mounting hole of the right connecting block in real time during the pressing process, eliminating assembly stress and off-center load. This significantly reduces the frictional resistance of the vertical valve during operation, thereby significantly extending the service life of the bearing and the vertical valve. This invention adopts mechanized operation, reducing reliance on the skills of operators, achieving standardized and consistent precision assembly, and improving process stability.

[0026] This disclosure also provides a method for assembling a right connecting block of a vertical valve, using the assembly device for the right connecting block of the vertical valve described above; the assembly method includes: fitting a bearing to be installed into the right connecting block onto each first guide rod; fitting the right connecting block onto the first guide rod; fitting another bearing to be installed into the right connecting block onto each first guide rod; controlling the drive assembly to drive the pressing member to move toward the base plate, and the pressing member presses each bearing into the corresponding mounting hole of the right connecting block.

[0027] The following description, in conjunction with the accompanying drawings, provides an exemplary illustration of the assembly device and assembly method for the upper right connecting block of the vertical valve of this disclosure.

[0028] Figure 1 This is a schematic diagram of the structure when the right connecting block of a vertical valve is installed in the prior art. Figure 2 This is a cross-sectional view of the right connecting block of a vertical valve in the prior art during installation.

[0029] like Figure 1 , Figure 2 As shown, the right connecting block 200 of the vertical valve includes two mounting holes 210, and a bearing 300 needs to be press-fitted into each end of the two mounting holes 210. In the prior art, the right connecting block 200 is placed on a flat plate 400, and a cylindrical pressing member 500 is used to press the bearings 300 one by one into the corresponding mounting holes of the right connecting block 200. However, this method has a low assembly qualification rate (below 80%), and after assembly, the coaxiality between the central axes of the two bearings in each mounting hole, and between the central axes of the bearings and the central axes of the mounting holes, is poor, and the parallelism between the central axes of the four bearings is not high.

[0030] Figure 3 This is a schematic diagram of the assembly device for the upper right connecting block of the vertical valve in an embodiment of this disclosure. Figure 4 This is a front view of the assembly device for the upper right connecting block of the vertical valve in an embodiment of this disclosure. Figure 5 This is a right view of the assembly device for the upper right connecting block of the vertical valve in an embodiment of this disclosure. Figure 6 This is a partial cross-sectional view of the assembly process of the assembly device for the upper right connecting block of the vertical valve in an embodiment of this disclosure. Figure 7 This is a partial cross-sectional view of the assembly device for the upper right connecting block of the vertical valve in this embodiment of the present disclosure after assembly.

[0031] To address the aforementioned problems, this disclosure provides an assembly device 100 for a right-side connecting block on a vertical valve. For example... Figure 3-7 As shown, the assembly device 100 for the upper right connecting block of the vertical valve includes a bracket 10, multiple first guide rods 20, a drive assembly 30, and a pressing member 40.

[0032] The support 10 includes a base plate 11.

[0033] The first guide rod 20 is linear. Specifically, the cross-section of the first guide rod 20 is circular. Multiple first guide rods 20 are vertically mounted on the base plate 11 and are parallel to each other. Each of the multiple first guide rods 20 corresponds one-to-one with the mounting holes of the right connecting block 200, and the diameter of each first guide rod 20 is clearance-fitted with the inner diameter of the bearing in the corresponding mounting hole of the right connecting block 200.

[0034] For example, if the right connecting block 200 has two mounting holes, then there are two first guide rods 20. The distance between the central axes of the two first guide rods 20 is the same as the distance between the central axes of the two mounting holes on the right connecting block 200, allowing the right connecting block 200 to be fitted onto the two first guide rods 20. The diameter of one first guide rod 20 is clearance-fitted with the inner diameter of the bearing installed in one mounting hole, and the diameter of the other first guide rod 20 is clearance-fitted with the inner diameter of the bearing installed in the other mounting hole.

[0035] Specifically, each mounting hole of the right connecting block 200 has the same diameter, and the inner and outer diameters of the bearings installed in each mounting hole are the same.

[0036] The straightness tolerance of the first guide rod 20 is 0.02mm. That is, the straightness error of the first guide rod 20 does not exceed 0.02mm over its entire length. The parallelism tolerance between multiple first guide rods 20 is 0.02mm. Over the entire length of the first guide rod 20, the parallelism error of the axis of one guide rod relative to the axis of another guide rod does not exceed 0.02mm. The diameter of the first guide rod 20 is determined by subtracting 1 / 6 of the bearing tolerance zone from the minimum inner diameter of the bearing in the mounting hole corresponding to the right connecting block 200, i.e., determined according to the following rules: ; in, The diameter of the first guide rod 20 is... This refers to the minimum inner diameter of the bearing inside the mounting hole of the right connecting block 200 corresponding to the first guide rod 20. The tolerance zone width is the inner diameter of the bearing in the mounting hole corresponding to the first guide rod 20 in the right connecting block 200, and the tolerance grade of the diameter of the first guide rod 20 is not lower than IT5.

[0037] The straightness tolerance of the first guide rod, the tolerance between the diameter of the first guide rod and the minimum inner diameter of the corresponding bearing, and the parallelism tolerance between multiple first guide rods make the first guide rod an ideal concentric shaft for the bearing in the mounting hole of the right connecting block. When the bearing is installed into the mounting hole of the right connecting block along the first guide rod, the concentricity of the bearing in the same mounting hole and the parallelism of the bearing in different mounting holes can be ensured.

[0038] In some embodiments, the first guide rod 20 is made of 40Cr alloy structural steel, heat-treated to a Brinell hardness of HBW 220-250, and the sliding outer circular surface of the first guide rod 20 is plated with a hard chrome plating.

[0039] Specifically, the first guide rod 20 is made of 40Cr alloy structural steel conforming to GB / T 3077 standard.

[0040] In existing technologies, based on core requirements such as wear resistance, corrosion resistance, load capacity, and cost, the most commonly used materials for guide rods are mainly three categories: carbon steel, bearing steel, and stainless steel. Carbon steel is low in cost and has good machinability. However, it has poor hardenability, is severely limited by size, and has weak core performance in large parts. Bearing steel has top-notch wear resistance, possessing extremely high hardness and contact fatigue strength; however, it has poor toughness, high processing costs, and stringent requirements for raw material purity. Stainless steel has excellent corrosion resistance, showing significant advantages in humid or corrosive environments, but it is expensive, difficult to process, and its conventional strength / wear resistance is inferior to tempered 40Cr.

[0041] In this invention, the first guide rod 20 is made of 40Cr alloy structural steel and heat-treated to a Brinell hardness of HBW220-250, which allows the guide rod to achieve a good balance between strength and toughness. The tensile strength can reach over 980MPa, ensuring that the guide rod is not prone to bending or permanent deformation when subjected to radial force or axial impact, thus guaranteeing guiding accuracy. The hardness range of HBW220-250 avoids the brittle range at high hardness, allowing the guide rod to effectively absorb impact loads during operation and reduce the risk of breakage due to vibration or accidental impact. A hard chrome plating layer is applied to the sliding contact outer surface of the first guide rod, resulting in a surface roughness Ra≤0.2μm. The surface of the first guide rod has an extremely low coefficient of friction and extremely high hardness, giving it super-slip and wear-resistant properties. This allows it to maintain its outer diameter for a long time, greatly extending its service life. The smooth hard chrome plating layer causes minimal wear on the bearings, increasing the service life of the right connecting block. Furthermore, the high chemical stability of the hard chrome plating layer effectively prevents the guide rod from rusting. Furthermore, grinding after hard chrome plating ensures the accuracy of the shaft diameter, thereby guaranteeing the precision of the guide fit. Because the hard chrome plating layer has extremely high hardness (typically reaching HV900–1100, approximately equivalent to HRC65 or higher), but it is very thin (typically only 0.02–0.05 mm) and relatively brittle, the combination of the hard chrome plating layer and the HBW220–250 hardness of the first guide rod substrate creates a solid yet resilient "foundation." When the first guide rod is subjected to large radial loads or impacts, this resilient substrate effectively absorbs and disperses the pressure, preventing the thin and brittle hard chrome layer from being crushed or peeled off due to substrate deformation, thus extending the service life of the guide rod.

[0042] In summary, the material, hardness, and surface hard chrome plating of the first guide rod combine the toughness of the tempered substrate ("using softness to overcome hardness") to compensate for the shortcomings of the chrome layer ("hard and brittle"), achieving an ideal mechanical state of "hard on the outside and tough on the inside": the surface hardness is comparable to bearing steel, while the core toughness is better than bearing steel. Its comprehensive performance surpasses that of ordinary carbon steel, while the cost is far lower than that of stainless steel.

[0043] Specifically, the thickness of the hard chrome plating is 0.03mm to 0.10mm. If the hard chrome plating is too thin, the wear resistance will be insufficient; if the hard chrome plating is too thick, the plating will easily peel off.

[0044] The requirements for the material, straightness, parallelism, and diameter tolerance of the first guide rod 20 make it a high-precision guide rod integrating "high strength, high toughness, ultra-precision, and ultra-smoothness" in four dimensions. This ensures that the installation accuracy of the bearings in the right connecting block 200 reaches the following: the coaxiality between the central axis of each mounting hole and the central axis of the two bearings is less than or equal to 0.02mm, and the parallelism between the central axes of each bearing is less than or equal to 0.02mm.

[0045] In some embodiments, all first guide rods 20 are detachably mounted on the plane of the base plate 11. Different numbers of first guide rods 20 can be installed according to different specifications of right connecting blocks 200, and different distances between the first guide rods can be set according to the distance between the mounting holes of the right connecting blocks, which is suitable for the assembly of right connecting blocks 200 of different sizes and numbers of mounting holes.

[0046] In some embodiments, the base plate 11 is provided with a plurality of mounting holes, the central axis of each mounting hole being perpendicular to the mounting surface of the base plate 11. A stepped shaft structure is provided at one end of the first guide rod 20 mounted on the base plate 11. The small-diameter end of the stepped shaft structure is located at the end of the first guide rod 11, and the diameter of the large-diameter section of the stepped shaft structure is larger than the diameter of the mounting hole. The stepped surface of the stepped structure is perpendicular to the axis of the first guide rod. When the first guide rod is installed in the mounting hole, the small-diameter section of the stepped shaft structure is clearance-fitted with the mounting hole, and the stepped surface of the first guide rod contacts the base plate. During assembly, the stepped surface of the first guide rod is brought into close contact with the base plate, thereby ensuring that the first guide rod is perpendicular to the base plate after installation.

[0047] In some embodiments, the mounting end of the first guide rod 20 is provided with an annular scale mark, and the plane on which the annular scale mark is located is parallel to the mounting reference plane of the base plate. During assembly, using the end face of the base plate as a reference, observe whether the gap between the scale mark and the end face of the base plate is uniform, in order to quickly verify the installation verticality of the guide rod.

[0048] Specifically, such as Figure 6 As shown, the first guide rod 20 is fixed to the base plate 11 from the bottom using screws.

[0049] In some embodiments, the flatness tolerance of the mounting surface of the base plate is 0.02 mm. That is, the variation of the actual shape of the mounting surface relative to the ideal plane (i.e., the difference between the highest and lowest points) within the entire range of the base plate mounting surface does not exceed 0.02 mm. The requirement for the flatness of the base plate mounting surface ensures the parallelism between different first guide rods after multiple first guide rods are installed vertically.

[0050] The drive assembly 30 is mounted on the bracket 10.

[0051] In some embodiments, the drive assembly 30 includes a mounting plate 31, a drive device 32, and a drive rod 33. The mounting plate 31 is fixed to the bracket 10 and is arranged parallel to the mounting surface of the base plate 11. The drive device 32 is mounted on the mounting plate 31. The first end of the drive rod 33 is drivenly connected to the drive device 32, and the second end of the drive rod 33 is fixedly connected to the pressing member 40. The first end and the second end of the drive rod 33 are opposite ends. After the drive device 32 is mounted on the mounting plate 31, the drive rod 33 is perpendicular to the mounting surface of the base plate 11, so that when the drive rod 33 pushes the pressing member 40 toward the base plate 11, the pressing member 40 can move perpendicular to the first guide rod 20.

[0052] Specifically, the drive device 32 is installed on the side of the mounting plate 31 opposite to the base plate 11, and the drive rod 33 passes through the mounting plate 31 and is fixedly connected to the pressing member 40.

[0053] Specifically, such as Figure 5 As shown, the drive rod 33 includes a telescopic rod 331 and a guide sleeve 332. A through hole is provided on the mounting plate 31. One end of the guide sleeve 332 is fixed to the mounting plate 31 and corresponds to the through hole on the mounting plate 31. The other end of the guide sleeve 332 is connected to the drive device 32. The telescopic rod 331 is movably disposed within the guide sleeve 332 and can extend or retract along the axis of the guide sleeve 332. When the telescopic rod 331 extends along the axis of the guide sleeve 332, it passes through the through hole on the mounting plate 31. The first end of the telescopic rod 331 is drivenly connected to the drive device 32, and the second end of the telescopic rod 331 is fixedly connected to the pressing member 40. The first and second ends of the telescopic rod 331 are opposite ends.

[0054] Specifically, the drive device 32 can be a cylinder, a hydraulic cylinder, a lead screw module, etc.

[0055] Specifically, the distance between the mounting plate 31 and the base plate 11 is greater than the length of the first guide rod 20, and the distance from the mounting plate 31 to the top of the first guide rod 20 is greater than the length of the first guide rod 20. Figure 2 The distance (viewed from the direction shown) is greater than the height of the right connecting block 200. Figure 2The distance is more than twice that of the vertical direction shown, which facilitates the installation of the right connecting block 200 onto the first guide rod 20 and its removal from the first guide rod 20.

[0056] The pressing member 40 is driven to connect with the driving assembly 30. The driving assembly 30 drives the pressing member 40 to move toward the base plate 11 to press the bearing 300, which is sleeved on the first guide rod 20, into the mounting hole of the right connecting block 200, which is sleeved on the first guide rod 20, along the axial direction of the first guide rod 20.

[0057] Figure 8 This is a schematic diagram of the pressing component in an embodiment of this disclosure.

[0058] In some embodiments, the pressing member 40 is plate-shaped, and the pressing surface of the pressing member 40 is parallel to the mounting surface of the base plate 11. The pressing surface of the pressing member 40 faces the first guide rod 20. Specifically, the flatness tolerance of the pressing surface of the pressing member 40 is 0.02 mm. The requirement for the flatness of the pressing surface of the pressing member 40 ensures that the pressing member 40 can press against the upper part of the right connecting block 200 to be installed. Figure 6 Multiple bearings (in the direction shown) are simultaneously subjected to the same force to avoid uneven force applied by the pressing part 40 to different areas of a bearing or different bearings, which would cause assembly defects.

[0059] like Figure 8 As shown, the pressing member 40 is provided with multiple guide holes 41, which correspond one-to-one with multiple first guide rods 20. When the driving assembly 30 drives the pressing member 40 to move toward the base plate 11, the first guide rod 20 passes through the corresponding guide hole 41 axially. The guide hole 41 allows the pressing member 40 to move along the direction of the first guide rod 20 when pressing the bearing, limiting the direction of the force applied to the bearing to always be strictly parallel to the direction of the axis of the first guide rod 20 during the pressing process. This reduces the radial load on the first guide rod 20 when the bearing enters the mounting hole of the right connecting block along the first guide rod 20, and avoids jamming between the bearing and the mounting hole of the right connecting block due to the direction of the force applied to the bearing not being parallel to the direction of the axis of the first guide rod 20, thereby causing damage to the bearing and a high rate of assembly defects.

[0060] Specifically, the length of the first guide rod 20 ensures that the first guide rod 20 remains within the guide hole 41 throughout the entire process from when the pressing member 40 first contacts the bearing 300 at the upper end of the right connecting block 200 until the assembly is complete. The pressing member 40 moves along the first guide rod 20, thus ensuring that it can move along the first guide rod 20 during the pressing process to assemble the right mounting block 200. This guarantees the high-precision trajectory of the pressing member 40 and further increases the accuracy of the bearing installation into the right connecting block 200.

[0061] More specifically, such as Figure 6 As shown, the length of the first guide rod 20 is such that when the pressing member 40 just contacts the bearing 300 at the upper end of the right connecting block 200, the end of the first guide rod 20 is exactly located inside the guide hole 41. This reduces the installation height of the drive device 32 and the stroke of the drive device 32 driving the telescopic rod 331 to extend and retract.

[0062] In some embodiments, the bracket 10 further includes a plurality of second guide rods 12, all of which are vertically mounted on the plane of the base plate 11. Figure 8 As shown, the pressing member 40 is provided with multiple through holes 42, and each second guide rod 12 passes through a corresponding through hole 42 and slides in cooperation with the pressing member 40. The second guide rod 12 further limits the trajectory of the pressing member 40 when it moves, so that when the driving assembly 30 drives the pressing member 40 to move, the pressing member 40 needs to move along the second guide rod 12. This further makes the trajectory of the pressing member 40 moving towards the base plate 11 parallel to the axis of the first guide rod, thereby reducing the radial load on the first guide rod 20 when the bearing enters the mounting hole of the right connecting block along the first guide rod 20. This avoids jamming between the bearing and the mounting hole of the right connecting block due to the direction of the force applied to the bearing not being parallel to the direction of the axis of the first guide rod 20, which would cause damage to the bearing and a defective assembly rate. This further increases the precision of the assembly between the bearing 300 and the right connecting block 200.

[0063] The dual constraint of the second guide rod 12 and guide hole 41 on the movement trajectory of the pressing member 40 ensures a high degree of parallelism between the movement trajectory of the pressing member 40 and the axial direction of the first guide rod 20 during the assembly of the right mounting block 200. This allows the bearing 300 to be smoothly pressed into the corresponding mounting hole of the right connecting block 200 along the axial direction of the first guide rod 20, reducing the radial load of the bearing 300 on the first guide rod 20. It also prevents jamming between the bearing and the mounting hole of the right connecting block due to the direction of the force applied to the bearing not being parallel to the axial direction of the first guide rod 20, thus avoiding bearing damage and assembly defects. This ensures the precision of the assembly between the bearing 300 and the right connecting block 200.

[0064] Specifically, having three or more second guide rods 12 can increase the load-bearing stability of the second guide rods 12 and also increase the horizontal stability of the pressing member 40. For example, having four second guide rods 12.

[0065] Specifically, the mounting plate 31 is mounted on the second guide rod 12, and the mounting plate 31 is perpendicular to the second guide rod 12. The second guide rod 12 has both supporting and guiding functions, serving as both a load-bearing support for the base plate 11 and the mounting plate 31, and a sliding guide component for the pressing member 40, ensuring its precise reciprocating movement in the vertical direction.

[0066] Specifically, multiple second guide rods 12 are evenly distributed along the circumference to ensure that the load center always falls on the center of the base plate 11, thereby ensuring the stability of the bracket 10.

[0067] Specifically, such as Figure 4 As shown, screws are used to fix the lower end of the second guide rod 12 to the mounting surface of the base plate 11 from the bottom, thereby fixing the lower end of the second guide rod 12 to the mounting surface of the base plate 11. Screws are used to fix the upper end of the second guide rod 12 to the upper surface of the mounting plate 31, thereby fixing the upper end of the second guide rod 12 to the mounting plate 31.

[0068] In some embodiments, a linear bearing 43 is press-fitted into each through hole 42, and the pressing member 40 is sleeved on the corresponding second guide rod 12 through the linear bearing 43, so that the pressing member 40 and the second guide rod 12 form a sliding connection. The linear bearing 43 can reduce the friction of the pressing member 40 sliding on the second guide rod and ensure that the movement trajectory of the pressing member 40 sliding on the second guide rod 12 is parallel to the axial direction of the first guide rod 20.

[0069] In some embodiments, the point of application of the resultant pressure of the pressing member 40 coincides with the pressure center formed by all the first guide rods 20, and the position where the drive assembly 30 applies pressure to the pressing member 40 is located at the center of gravity of the pressing member 40. This ensures that when the drive assembly 30 pushes the pressing member 40, the pressing member 40 applies uniform pressure to the bearings in each mounting hole of the right mounting block 200. This avoids uneven force applied by the pressing member 40 to the bearings, which could cause jamming between the bearings and the mounting holes of the right connecting block, resulting in bearing damage and assembly defects, and ensures the precision of the assembly between the bearing 300 and the right connecting block 200.

[0070] Specifically, the fixed connection between the second end of the telescopic rod 331 and the pressing member 40 is located at the center of gravity of the pressing member 40.

[0071] For example, the pressing member 40 is a rectangular plate with completely uniform material and symmetrical shape. There are two first guide rods 20. The geometric center of the pressing member 40 coincides with the center of gravity. The telescopic rod 331 is fixedly connected to the center of the pressing member 40. The projections of the two first guide rods 20 on the pressing member 40 are centrally symmetrical about the center of the pressing member 40.

[0072] This disclosure also provides a method for assembling the right connecting block of a vertical valve. Using the aforementioned assembly device for the right connecting block of a vertical valve, the method for assembling the right connecting block of a vertical valve includes: Step S1: Install a bearing to be installed into the right connecting block on each first guide rod 20.

[0073] Step S2: Fit the right connecting block 200 onto the first guide rod 20. This ensures that the lower end of each mounting hole on the right connecting block 200 corresponds to a bearing.

[0074] Step S3: On each of the first guide rods 20, a bearing to be installed into the right connecting block is fitted. This bearing corresponds to the upper end of the mounting hole of the right connecting block 200.

[0075] In step S4, the control drive assembly 30 drives the pressing member 40 to move toward the base plate 11, and the pressing member 40 presses each bearing into the corresponding mounting hole of the right connecting block 200.

[0076] Specifically, after the right connecting block 200 of the vertical valve is assembled, the drive assembly 30 drives the pressing member 40 to move in the direction away from the base plate 11, and the assembled right connecting block 200 is removed. The first guide rod 20 is then disassembled as needed.

[0077] In some embodiments, in step S4, when the drive assembly 30 drives the pressing member 40 to move toward the base plate 11, the pressing member 40 is first controlled to move toward the base plate 11 to a first position, and then the pressing member 40 is controlled to move toward the base plate 11 to a second position. The first position satisfies that the drive assembly 30 is in an unloaded state, and the second position satisfies that the distance between the pressing member 40 and the base plate 11 is equal to the height of the right connecting block 200.

[0078] Specifically, the first position is when the upper end of the first guide rod 20 just extends into the guide hole 41 of the pressing member 40. The second position is when the pressing member 40 just presses the bearing into the corresponding mounting hole of the right connecting block 200.

[0079] First, the pressing component 40 is moved to the first position. During this unloaded process, the drive assembly 30 can operate at high speed, allowing the pressing component 40 to quickly move to a position close to the bearing. When the pressing component 40 moves from the first position to the second position, it is a transition from unloaded to loaded. The drive assembly 30 switches to low-speed mode to avoid high-speed impact on the workpiece, which could cause mechanical damage to the parts. Furthermore, the limitation of the second position ensures that the pressing component 40 stops once the bearing is pressed into the corresponding mounting hole of the right connecting block 200, preventing overshoot and potential mechanical damage to the parts.

[0080] Specifically, when the pressing member 40 is in the first position, the pressing member 40 just contacts the bearing. This can shorten the overall stroke of the pressing member 40, reduce the installation height of the drive device 32, and at the same time avoid high-speed impact on the bearing caused by no-load operation.

[0081] Example: The vertical valve right connecting block assembly device 100 of this invention was used to assemble a total of 151 right connecting blocks 200. After assembly, the number of assembly defects was counted as 7, and the assembly yield was calculated to be 95.36%. Further visual inspection was conducted on all assembled right connecting blocks, focusing on the contact surfaces of the right connecting block body and the matching bearing. The results showed that the workpiece surface was basically free of defects such as pressure marks, dents, and squeeze marks. The risk of damage to the workpiece appearance caused by the assembly process was effectively suppressed. This assembly device can ensure the assembly yield while protecting the surface integrity of the right connecting block and bearing, reducing the probability of assembly defects such as pressure marks.

[0082] Comparative example: use Figure 1 The existing assembly process, without using the vertical valve right connecting block assembly device 100 of this invention, completed a comparative assembly test of 25 right connecting blocks 200. Statistics showed that 12 pieces were defective, resulting in an assembly yield of only 52%. Detailed visual inspection revealed that both the assembled right connecting blocks and bearing surfaces had pressure marks. Specific failure modes included: surface damage on 9 right connecting blocks, internal bearing damage on 2 pieces, and bearing detachment in 1 piece. Existing assembly methods have low success rates, and the pressing force is difficult to control precisely, easily causing various defects such as surface damage, internal bearing damage, and even bearing detachment, thus hindering the quality of mass production.

[0083] The text and accompanying drawings in this disclosure are provided by way of example only to aid in understanding this disclosure. They should not be construed as limiting the scope of this disclosure in any way. Although certain embodiments and examples have been provided, it will be apparent to those skilled in the art, based on the content disclosed herein, that changes can be made to the illustrated embodiments and examples without departing from the scope of this disclosure.

[0084] Although this disclosure has been described with reference to exemplary embodiments, various changes and modifications may be suggested to those skilled in the art. This disclosure is intended to cover such changes and modifications that fall within the scope of the appended claims.

[0085] Nothing described in this disclosure should be construed as implying that any particular element, step, or function is an essential element that must be included within the scope of the claims. The scope of the patent subject matter is defined only by the claims.

Claims

1. An assembly device for a right connecting block on a vertical valve, characterized in that, include: The support frame includes the base plate; Multiple straight first guide rods are provided, all of which are vertically mounted on the plane of the base plate and parallel to each other. Each first guide rod corresponds to a mounting hole in the right connecting block, and the diameter of each first guide rod is clearance-fitted with the inner diameter of the bearing installed in the corresponding mounting hole in the right connecting block. The straightness tolerance of the first guide rod is 0.02 mm; The parallelism tolerance between the multiple first guide rods is 0.02 mm; The diameter of the first guide rod is determined according to the following rules: ； in, The diameter of the first guide rod is [value missing]. This is the minimum inner diameter of the bearing in the mounting hole corresponding to the first guide rod in the right connecting block. The tolerance zone width is the inner diameter of the bearing in the mounting hole corresponding to the first guide rod in the right connecting block, and the tolerance grade of the diameter of the first guide rod is not lower than IT5; The drive assembly is mounted on the bracket; as well as The pressing component is driven to move toward the base plate by the driving component, which in turn drives the pressing component to press the bearing sleeved on the first guide rod into the mounting hole of the right connecting block sleeved on the first guide rod along the axial direction of the first guide rod.

2. The assembly device for the upper right connecting block of the vertical valve according to claim 1, characterized in that, The first guide rod is made of 40Cr alloy structural steel, heat-treated to a Brinell hardness of HBW220-250, and the sliding outer circular surface of the first guide rod is plated with a hard chrome plating.

3. The assembly device for the upper right connecting block of the vertical valve according to claim 1, characterized in that, The base plate is provided with multiple mounting holes, and the central axis of each mounting hole is perpendicular to the mounting surface of the base plate. The first guide rod is mounted on one end of the base plate and is provided with a stepped shaft structure. The small diameter end of the stepped shaft structure is located at the end of the first guide rod, and the large diameter section of the stepped shaft structure is larger than the diameter of the mounting hole. The stepped surface of the stepped structure is perpendicular to the axis of the first guide rod. When the first guide rod is installed in the mounting hole, the small diameter section of the stepped shaft structure is clearance-fitted with the mounting hole, and the stepped surface of the first guide rod is in contact with the base plate.

4. The assembly device for the upper right connecting block of the vertical valve according to claim 1, characterized in that, The mounting end of the first guide rod is provided with an annular scale mark, and the plane on which the annular scale mark is located is perpendicular to the axis of the first guide rod.

5. The vertical valve right connecting block assembly device according to claim 3 or 4, characterized in that, The flatness tolerance of the mounting surface of the base plate is 0.02mm.

6. The vertical valve right connecting block assembly device according to claim 1, characterized in that, The pressing member is plate-shaped, and the pressing surface of the pressing member is parallel to the mounting surface of the base plate. The pressing member is provided with multiple guide holes, and each of the multiple guide holes corresponds to a multiple of the first guide rods. When the driving assembly drives the pressing member to move toward the base plate, the first guide rods pass through the corresponding guide holes axially.

7. The assembly device for the upper right connecting block of the vertical valve according to claim 6, characterized in that, The bracket also includes multiple second guide rods, which are vertically installed on the plane of the base plate. The pressing member is provided with multiple through holes, and each second guide rod passes through one of the through holes and slides in cooperation with the pressing member.

8. The assembly device for the upper right connecting block of the vertical valve according to claim 7, characterized in that, Each of the through holes is press-fitted with a linear bearing, and the pressing member is sleeved on the corresponding second guide rod through the linear bearing, so that the pressing member and the second guide rod form a sliding connection.

9. The assembly device for the upper right connecting block of the vertical valve according to claim 6, characterized in that, The point of application of the combined pressure of the pressing element coincides with the pressure center formed by all the first guide rods, and the position where the driving assembly applies pressure to the pressing element is located at the center of gravity of the pressing element.

10. The assembly device for the upper right connecting block of the vertical valve according to claim 1, characterized in that, The drive assembly includes a mounting plate, a drive device, and a drive rod. The mounting plate is fixed on the bracket and is arranged parallel to the mounting surface of the base plate. The drive device is mounted on the mounting plate. The first end of the drive rod is drivenly connected to the drive device, and the second end of the drive rod is fixedly connected to the pressing member.

11. A method for assembling a right connecting block of a vertical valve, characterized in that, The assembly device for the upper right connecting block of the vertical valve according to any one of claims 1-10, the assembly method comprising: A bearing to be installed into the right connecting block is fitted onto each of the first guide rods; The right connecting block is fitted onto the first guide rod; A bearing to be installed into the right connecting block is then fitted onto each of the first guide rods. The drive assembly is controlled to drive the pressing member to move toward the base plate, and the pressing member presses each of the bearings into the mounting holes corresponding to the right connecting block.

12. The assembly method of the right connecting block of the vertical valve according to claim 11, characterized in that, When controlling the drive assembly to drive the pressing member to move toward the base plate, first control the pressing member to move toward the base plate to a first position, and then control the pressing member to move toward the base plate to a second position. The first position satisfies that the drive assembly is in an unloaded state, and the second position satisfies that the distance between the pressing member and the base plate is equal to the height of the right connecting block.

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