General assembly tool for magnetorheological damper floating plug assembly

Abstract

The general assembly tool comprises a guide pressing head, a cylindrical hole and a conical hole are formed in the guide pressing head, the cylindrical hole and the conical hole are located in the upper side and the lower side of the guide pressing head and communicated with each other, and the guide pressing head is detachably connected with a supporting rod through the conical hole. The end, inserted into the conical hole, of the supporting rod is fixed to the guide pressing head through a first screw, and the first screw is in threaded connection with a first butterfly nut. According to the universal assembly tool for the magnetorheological damper floating plug assembly, the conical hole is formed in one end of the guide pressing head and used for being automatically centered with a supporting rod, a nut is locked, and the coaxiality deviation after assembly caused by gap errors generated by hole-shaft matching is eliminated; the direction of downward pressing force almost coincides with the axis of the cylinder through small clearance fit between the guide pressing head and the cylinder wall, so that the floating plug assembly is stressed uniformly in the downward pressing process and is installed smoothly, the assembling time is greatly saved, the production efficiency is improved, and the machining cost is reduced.

Description

Technical Field

[0001] The utility model relates to a damper, in particular to a universal assembly tool for a floating plug component of a magnetorheological damper. Background Art

[0002] In order to make the float plug effectively separate the gas chamber and the magnetorheological fluid chamber and ensure the reliability of the seal, the existing damper needs to be installed with a sealing ring before the float plug assembly is installed into the damper cylinder. At this time, due to the presence of the sealing ring, the installation friction of the float plug assembly is relatively large. Even if grease is applied on the outer circle of the float plug assembly, the thrust point is not easy to align with the center of the float plug assembly. The installation process is often accompanied by a "creeping" phenomenon, making it difficult to install.

[0003] At the same time, in order to ensure the rebound force of the damper during use, there are requirements for the axial proportion of the gas chamber, so the installation depth of the float assembly along the cylinder wall needs to be effectively controlled.

[0004] In actual production, the applicant has adopted the following method: after the float plug assembly is installed in the barrel, a slender rod is used to push the float plug assembly to the required position; in order to effectively ensure the depth of the float plug assembly when it is installed, the distance from the end face of the float plug assembly to the barrel mouth needs to be measured multiple times during the installation process, so that a large amount of production resources are consumed in the assembly of the float plug assembly, which reduces the production speed; at the same time, this assembly method makes it difficult to ensure the consistency of the depth position of the float plug assembly in the cylinder. Utility Model Content

[0005] The utility model aims to provide a universal assembly tool for a magnetorheological damper floating plug assembly to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A universal assembly tool for a magnetorheological damper floating plug assembly comprises a guide pressure head, on which a cylindrical hole and a conical hole are provided, the cylindrical hole and the conical hole are located on the upper and lower sides of the guide pressure head and are interconnected, the guide pressure head is detachably connected to a support rod through the conical hole, one end of the support rod inserted into the conical hole is fixed to the guide pressure head through a screw 1, and a butterfly nut 1 is threadedly connected to the screw 1; the other end of the support rod is detachably connected to an extension rod through a screw 2, both ends of the extension rod are hollow, the other end of the extension rod is detachably connected to a handheld pressure ring through a screw 3, and the screw 3 is provided with butterfly nuts 2 and 3 that are threadably connected to the screw.

[0008] As a preferred solution of the utility model: both ends of the support rod are hollow.

[0009] As a further preferred solution of the present invention: the butterfly nut two and the butterfly nut three are symmetrically arranged.

[0010] As a further preferred solution of the utility model: a through hole is provided on the guide pressure head.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The universal assembly tooling of the magnetorheological damper floating plug assembly has a conical hole at one end of the guide pressure head for automatic centering with the support rod and locking nut, eliminating the deviation of the coaxiality after assembly caused by the gap error generated by the hole-axis match; the small gap between the guide pressure head and the cylinder wall is used to make the direction of the downward pressure almost coincide with the cylinder axis, so that the floating plug assembly is evenly stressed during the downward pressure process and can be smoothly installed, which greatly saves assembly time, improves production efficiency and reduces processing costs.

[0013] 2. The adaptability of the tooling can be improved by replacing guide pressure heads of different sizes to adapt to different damper cylinder diameters, and by replacing extension rods of different lengths and quantities to adapt to the different depths of downward pressure required for the float assembly.

[0014] 3. Only one measurement is required and the hand-held pressure ring is fixed to effectively limit the downward stroke of the float assembly, greatly shortening the assembly time. At the same time, the depth difference of the float assemblies assembled in the same batch can be controlled within ±0.05mm, improving the consistency of product dimensions, and reducing the inspection rate from 100% to 10% now, saving inspection time, accelerating the overall production progress, and shortening the delivery cycle.

[0015] 4. The tooling parts are connected by threads and are equipped with screws, butterfly nuts, etc. They can be quickly disassembled and replaced without other tools. They are easy to carry. The use of standard parts makes the overall interchangeability of the tooling strong and reduces the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] In the figure: 1. butterfly nut one; 2. guide pressure head; 3. screw one; 4. support rod; 5. screw two; 6. extension rod; 7. screw three; 8. butterfly nut two; 9. hand-held pressure ring; 10. butterfly nut three; 11. cylinder; 12. magnetorheological fluid chamber; 13. float assembly; 14. gas chamber. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figure 1 In an embodiment of the utility model, a universal assembly tool for a magnetorheological damper floating plug assembly includes a guide pressure head 2, on which a cylindrical hole and a conical hole are provided, the cylindrical hole and the conical hole are located on the upper and lower sides of the guide pressure head 2 and are interconnected, the guide pressure head 2 is detachably connected to a support rod 4 through the conical hole, both ends of the support rod 4 are hollow, one end of the support rod 4 inserted into the conical hole is fixed to the guide pressure head 2 through a screw 1 3, a butterfly nut 1 is threadedly connected to the screw 1 3; the other end of the support rod 4 is detachably connected to an extension rod 6 through a screw 2 5, the two ends of the extension rod 6 are hollow, the other end of the extension rod 6 is detachably connected to a handheld pressure ring 9 through a screw 3 7, the screw 3 7 is provided with a butterfly nut 2 8 and a butterfly nut 3 10 which are threadably connected to the screw 3 7; the butterfly nut 2 8 and the butterfly nut 3 10 are symmetrically arranged.

[0022] The guide pressure head 2 is provided with a through hole for uniformly distributing the pressure difference generated during the downward pressing process, thereby creating downward pressing resistance.

[0023] When the present assembly tool is used, firstly, the screw rod 3 is rotated and inserted into the guide pressure head 2, and then the guide pressure head 2 is inserted along the inner wall of the cylinder barrel 11, so that the conical hole of the guide pressure head 2 is directly connected with the end of the support rod 4, and the guide pressure head 2 is lightly rotated to ensure that the center positioning is determined, and then the screw rod 3 is tightened and fixed in the cylindrical hole position by the butterfly nut 1; then, the extension rod 6 is connected through the threaded rod 2, and then the other end of the extension rod 6 is screwed into the threaded rod 3. After the threaded rod 3 is screwed into the extension rod 6, the butterfly nut 2 8 is screwed into the threaded rod 3 in turn, the hand-held pressure ring 9 is placed, and the screw is screwed in. The butterfly nut three 10 is used to perform the initial positioning of the handheld pressure ring 9; after the initial positioning is completed, the distance between the guide pressure head 2 and the handheld pressure ring 9, that is, the height of the magnetorheological fluid chamber 12, is determined by a measuring tool, and compared with the actual required pressing depth. If it does not reach the required size, the butterfly nut two 8 is rotated to achieve fine adjustment of the position of the handheld pressure ring 9. When it is determined that the actual distance is consistent with the required depth distance, the position of the butterfly nut two 8 is determined, and the butterfly nut three 10 is tightened to keep the handheld pressure ring 9 fixed and positioned through the butterfly nut two 8 and the butterfly nut three 10, and the tooling assembly is completed;

[0024] Furthermore, after completing the above work, put the float plug assembly 13 into the side of the cylinder 11 close to the guide pressure head 2, stop when the distance between the float plug assembly 13 and the orifice of the guide pressure head 2 is about 5 mm, align the overall tooling with the guide pressure head 2 with the float plug assembly 13, hold the support rod 4 and push it downward along the axis direction of the cylinder wall of the cylinder 11, when the lower end face of the hand-held pressure ring 9 is more than (about) 80 mm from the mouth of the cylinder 11, directly apply the palm to the upper end face of the hand-held pressure ring 9 and push it vertically downward until the lower end face of the hand-held pressure ring 9 fits with the end face of the cylinder 11 to form a gas chamber 14, and the float plug assembly 13 is assembled in the position in the cylinder 11 through this assembly work.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A universal assembly tool for a magnetorheological damper floating plug assembly, comprising a guide pressure head (2), It is characterized in that The guide pressure head (2) is provided with a cylindrical hole and a conical hole, the cylindrical hole and the conical hole are located at the upper and lower sides of the guide pressure head (2) and are interconnected, the guide pressure head (2) is detachably connected to a support rod (4) through the conical hole, one end of the support rod (4) inserted into the conical hole is fixed to the guide pressure head (2) through a screw rod (3), and a butterfly nut (1) is threadedly connected to the screw rod (3); the other end of the support rod (4) is detachably connected to an extension rod (6) through a screw rod (5), the two ends of the extension rod (6) are hollow, the other end of the extension rod (6) is detachably connected to a hand-held pressure ring (9) through a screw rod (7), and the screw rod (7) is provided with a butterfly nut (8) and a butterfly nut (10) which are threadedly connected to the screw rod (7).

2. A universal assembly tool for a magnetorheological damper floating plug assembly according to claim 1, It is characterized in that Both ends of the support rod (4) are hollow.

3. A universal assembly tool for a magnetorheological damper floating plug assembly according to claim 1, It is characterized in that The butterfly nut 2 (8) and the butterfly nut 3 (10) are symmetrically arranged.

4. A universal assembly tool for a magnetorheological damper floating plug assembly according to claim 1, 2 or 3, It is characterized in that The guide pressure head (2) is provided with a through hole.

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