Chromium plating tool for radial spherical plain bearing

Abstract

The utility model discloses a chromium plating tool for a radial spherical plain bearing. The chromium plating tool comprises a hanger rod, the spacer bush is connected to the lower end of the hanger rod, the interior of the spacer bush is transversely through to form a chromium plating space for the radial spherical plain bearing to enter and exit, and through holes are formed in the parts, located at the top and the bottom of the chromium plating space, of the spacer bush correspondingly; the chromium plating tool for the radial spherical plain bearing comprises a chromium plating space and a radial spherical plain bearing, the shape and the size of the radial spherical plain bearing are matched with those of the chromium plating space, the radial spherical plain bearing is arranged in the chromium plating space, and the surface, to be subjected to chromium plating, of the radial spherical plain bearing makes contact with the inner wall of the spacer bush, so that electric contact is achieved. According to the method, targeted chromium plating can be conducted according to the structural characteristics of the radial spherical plain bearing, a chromium plating layer is good in uniformity and firm in viscidity, and the thickness of the plating layer can be controlled within a small range.

Description

Technical Field

[0001] The utility model relates to the field of chrome-plating tooling for radial spherical bearings. More specifically, the utility model relates to a chrome-plating tooling for radial spherical bearings. Background Art

[0002] Bearings are the core components of mechanical equipment and are known as the "joints" in the industrial field. The various performances of bearings directly affect the function and service life of the equipment. Spherical plain bearings are sliding bearings with the characteristics of surface contact, high load-bearing capacity, and adjustable center. They are widely used in various types of mechanical equipment. Self-lubricating spherical plain bearings are increasingly favored by various customers due to their self-lubricating and maintenance-free characteristics, and have become the development direction and value core of spherical plain bearings.

[0003] In recent years, large-scale pile-driving ships have been officially put into construction. The boom cylinders of various pile-driving ships have adopted self-lubricating spherical bearings, such as radial spherical bearings. When large-scale pile-driving ships are working at sea, due to the particularity of their working environment, they need to work for a long time, and their maintenance becomes a more difficult task. The surface of the radial spherical bearings needs to be chrome-plated. Therefore, it is necessary to develop a chrome-plating tool for radial spherical bearings. Utility Model Content

[0004] In order to achieve these purposes and other advantages according to the utility model, a preferred embodiment of the utility model provides a chrome plating tool for a radial spherical plain bearing, comprising:

[0005] Hanging rod;

[0006] A spacer sleeve is connected to the lower end of the hanger rod, the spacer sleeve is horizontally penetrated to form a chrome-plated space for the radial spherical bearing to enter and exit, and the top and bottom parts of the spacer sleeve located at the chrome-plated space are respectively provided with through holes;

[0007] The shape and size of the radial spherical bearing are adapted to the shape and size of the chrome-plated space. The radial spherical bearing is arranged in the chrome-plated space, and the surface of the radial spherical bearing to be chrome-plated contacts the inner wall of the spacer to achieve electrical contact.

[0008] According to a preferred embodiment of the present invention, the sum of the areas of all the through holes exceeds 50% of the sum of the areas of the spacer located at the top and bottom of the chrome-plating space.

[0009] According to a preferred embodiment of the utility model, the lower end of the hanger rod vertically passes through the spacer sleeve and extends out of the bottom of the spacer sleeve, and the extended portion of the hanger rod is provided with a fixing nut.

[0010] According to a preferred embodiment of the present invention, the number of through holes located at the top of the chrome-plating space and the number of through holes located at the bottom of the chrome-plating space are the same and correspond one to one.

[0011] According to a preferred embodiment of the present utility model, the upper end of the hanger rod is hook-shaped.

[0012] According to a preferred embodiment of the utility model, a mounting hole is provided at the center of the radial spherical bearing for the hanger rod to pass through.

[0013] The utility model at least includes the following beneficial effects: the chrome plating tooling structure of the radial spherical plain bearing of the utility model is simple, and targeted chrome plating can be performed according to the structural characteristics of the radial spherical plain bearing. The chrome plating layer has good uniformity and strong adhesion, and the plating thickness can be controlled within a smaller range.

[0014] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the chrome-plating tooling of the radial spherical bearing in the utility model. DETAILED DESCRIPTION

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0017] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0018] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0019] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0020] like Figure 1 As shown, a preferred embodiment of the utility model provides a chrome-plating tool for a radial spherical plain bearing, comprising:

[0021] Hanger rod 1;

[0022] A spacer 2 connected to the lower end of the hanger rod, the spacer is horizontally penetrated to form a chrome-plated space for the radial spherical bearing to enter and exit, and the top and bottom parts of the spacer located at the chrome-plated space are respectively provided with through holes 5;

[0023] The shape and size of the radial spherical plain bearing 3 are adapted to the shape and size of the chrome-plated space. The radial spherical plain bearing is arranged in the chrome-plated space, and the surface of the radial spherical plain bearing to be chrome-plated contacts the inner wall of the spacer to achieve electrical contact.

[0024] In the above technical solution, the hanger rod 1 plays a supporting role and has a good load-bearing function; in addition, when the electroplating is powered on, the current density is small, the heat is small, and the hanger rod will not burn out. The spacer 2 is adapted to the radial spherical bearing and plays a role in fixing the workpiece, while ensuring that the radial spherical bearing fits well and has good electrical contact. And the spacer is located at the top and bottom of the chrome plating space and is respectively provided with through holes 5, which improves the fluidity of the chrome plating solution and prevents rust in the inner hole area. The coating thickness can be controlled within 10μ. The coating uniformity can be controlled within 7μ.

[0025] Among them, the design of the hanger rod requires that the current density should not exceed 15A / mm 2 .

[0026] According to a preferred embodiment of the present invention, the sum of the areas of all the through holes exceeds 50% of the sum of the areas of the spacer 2 located at the top and bottom of the chrome plating space, which can further improve the fluidity of the plating solution.

[0027] According to a preferred embodiment of the utility model, after the lower end of the hanger rod 1 vertically passes through the spacer sleeve 2 and extends out of the bottom of the spacer sleeve, the extended part of the hanger rod 1 is provided with a fixing nut 4, which mainly plays the role of fixing the radial spherical bearing.

[0028] According to a preferred embodiment of the present invention, the number of the through holes 5 located at the top of the chrome-plating space and the number of the through holes located at the bottom of the chrome-plating space are the same and correspond one to one.

[0029] According to a preferred embodiment of the utility model, the upper end of the hanger rod is in a hook shape, which is convenient for hanging the entire chrome-plating tooling during subsequent operations.

[0030] A mounting hole is provided at the center of the radial spherical bearing for the hanger rod to pass through.

[0031] Implementation Case 1

[0032] Mounting hole at the center of the radial spherical plain bearing Diameter of hanger rod Matching. The evenly distributed through holes on the radial spherical bearing ensure that the solution flows fully during the electroplating process and prevent rust in the inner hole area. The hanger rod 1 is connected to the cathode rod, and the thread at the lower end is locked and fixed with a fixing nut. The anode plate is hung on the anode conductive rod and evenly distributed around the chrome plating tooling.

[0033] After electroplating, the coating is semi-bright with metallic luster, uniform and consistent. Visual inspection shows that there are no pitting, blistering, shedding, local lack of coating or rough coating on the spherical surface. The coating thickness ranges from 11-14μm, and the dimensional uniformity is 3μm, which is much better than the designed 10μm.

[0034] Implementation Case 2

[0035] Mounting hole at the center of the radial spherical plain bearing Diameter of hanger rod Matching. The evenly distributed through holes on the radial spherical bearing ensure that the solution flows fully during the electroplating process and prevent rust in the inner hole area. The hanger rod 1 is connected to the cathode rod, and the thread at the lower end is locked and fixed with a fixing nut. The anode plate is hung on the anode conductive rod and evenly distributed around the chrome plating tooling.

[0036] After electroplating, the coating is semi-bright with metallic luster, uniform and consistent. Visual inspection shows that there are no pitting, blistering, shedding, local lack of coating or rough coating on the spherical surface. The coating thickness ranges from 18-20μm, and the dimensional uniformity is 3μm, which is much better than the designed 10μm.

[0037] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A chrome-plating tool for a radial spherical plain bearing, characterized in that: include: Hanging rod; A spacer sleeve is connected to the lower end of the hanger rod, the spacer sleeve is horizontally penetrated to form a chrome-plated space for the radial spherical bearing to enter and exit, and the top and bottom parts of the spacer sleeve located at the chrome-plated space are respectively provided with through holes; The shape and size of the radial spherical bearing are adapted to the shape and size of the chrome-plated space. The radial spherical bearing is arranged in the chrome-plated space, and the surface of the radial spherical bearing to be chrome-plated contacts the inner wall of the spacer to achieve electrical contact.

2. The chrome plating tooling for the radial spherical plain bearing according to claim 1, characterized in that: The sum of the areas of all the through holes exceeds 50% of the sum of the areas of the spacer portions located at the top and bottom of the chrome-plating space.

3. The chrome plating tooling for the radial spherical plain bearing according to claim 1, characterized in that: The lower end of the hanger rod vertically passes through the spacer sleeve and extends out of the bottom of the spacer sleeve, and a fixing nut is provided on the extended portion of the hanger rod.

4. The chrome plating tooling for the radial spherical plain bearing according to claim 1, characterized in that: The number of through holes located at the top of the chrome-plated space and the number of through holes located at the bottom of the chrome-plated space are the same and correspond to each other one by one.

5. The chrome plating tooling for the radial spherical plain bearing according to claim 1, characterized in that: The upper end of the hanger rod is in a hook shape.

6. The chrome plating tooling for the radial spherical plain bearing according to claim 1, characterized in that: A mounting hole is provided at the center of the radial spherical bearing for the hanger rod to pass through.

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