Rack piston of conveying swing mechanism

Abstract

The utility model discloses a rack piston of a conveying swing mechanism, relates to the field of pistons, and solves the technical problem that a sealing ring of an existing conveying swing mechanism is troublesome to replace. The piston comprises a rack and two split pistons, cavities are formed in the two ends of the rack, threads are arranged on the inner walls of the cavities, through holes are formed in the split pistons, the split pistons are installed on the rack through screws, a step structure is arranged at the end, facing the rack, of each split piston, and an installation groove is formed between the step structure and the rack. And a connecting piece of the conveying swing mechanism is mounted in the mounting groove. According to the utility model, the time for replacing the sealing ring is saved, the working efficiency is improved, and the replacement cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of pistons, and more particularly to a rack piston of a conveying swing mechanism. Background Art

[0002] The conveying oscillation mechanism is driven by an oscillating cylinder, rack, and pinion. The engine's conveying oscillation mechanism primarily relies on the oscillating cylinder, a commonly used mechanical component that efficiently performs rotational motion within a confined space. The oscillating cylinder consists of a cylinder body and a rocker arm. Movement of the piston rod in the rocker arm changes the density of the liquid, generating a oscillating motion. This oscillating motion not only enables rotational motion in various mechanical devices, such as hydraulic manipulator arms, engine connecting rods, and automotive steering shafts, but also enables directional changes and speed control.

[0003] A swing cylinder is a tightly fitted accessory that uses hydraulics to generate very high torque within a very small space. It is a key hydraulic component, widely used in applications requiring limited rotational motion and high torque. Its internal structure, a combined helical tooth structure, allows the entire swing cylinder to generate high torque within a relatively small space. This design allows swing cylinders to exert powerful force within a confined space, making them widely used in various mechanical applications. Although swing cylinders are very powerful, they can still be precisely and easily controlled. Swing cylinders have been successfully used in nearly all applications requiring limited rotational motion and high torque, such as automotive, construction, and aerospace. The use of this hydraulic component not only improves work efficiency but also enhances system reliability.

[0004] The seals on the swing cylinder are consumable parts and require frequent replacement. However, due to the irrational design of the swing mechanism, replacing a minor seal requires disassembling numerous accessories, making this a very cumbersome task. Because repairs are difficult and time-consuming, cylinders with minor leaks are often left in service until a scheduled maintenance is established, saving the maintenance for holidays. Since repairs often require an entire shift, minor failures can easily lead to major repairs. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a rack piston of a conveying swing mechanism in view of the deficiencies of the existing technology, so as to solve the technical problem that it is troublesome to replace the sealing ring of the existing conveying swing mechanism.

[0006] The utility model describes a rack piston of a conveying swing mechanism, which includes a rack and two split pistons, both ends of the rack are provided with a cavity, the inner wall of the cavity is provided with a thread, and the split piston is provided with a through hole. The split piston is mounted on the rack by screws, and a step structure is provided on one end of the split piston facing the rack, and a mounting groove for mounting a connecting piece of the conveying swing mechanism is formed between the step structure and the rack.

[0007] As a further improvement, the step structure includes a positioning block and a limiting block, the positioning block is located below the limiting block, a positioning hole is provided at the opening of the cavity, a positioning hole corresponding to the positioning block is provided at the opening of the cavity, and the positioning block is inserted into the positioning hole.

[0008] Furthermore, the limiting block and the rack form a mounting groove, and the diameter of the limiting block is larger than the diameter of the positioning block.

[0009] Furthermore, an OR ring is provided between the connection between the positioning hole and the positioning block.

[0010] Furthermore, a limiting groove is provided at one end of the split piston away from the rack, the diameter of the limiting groove is larger than the diameter of the head of the screw, and the height of the limiting groove is larger than the height of the head of the screw.

[0011] Furthermore, the screw is a hexagonal screw.

[0012] Beneficial effects

[0013] The advantages of the present invention are:

[0014] 1. The utility model splits the original integrated piston and rack into a rack and two split pistons. The two split pistons can be detachably mounted on both ends of the rack by screws, which saves the time of replacing the sealing ring, improves work efficiency and saves replacement costs.

[0015] 2. The utility model provides a limit groove and a positioning block on the split piston, and the positioning block is inserted into the positioning hole on the rack, which makes it convenient to insert the split piston into the rack and install it easily. The screw is installed in a hidden manner in the limit groove to prevent foreign objects from wearing the screw during swinging, thereby increasing the service life of the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the disassembly of the split piston and rack of the utility model;

[0017] Figure 2 This is a schematic diagram of the installation of the split piston and rack of the utility model.

[0018] Among them: 1- rack, 2- split piston, 3- screw, 4- cavity, 5- positioning hole, 6- positioning block, 7- limiting slot, 8- limiting block, 9- mounting slot. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the embodiments, but this does not constitute any limitation to the present invention. Any limited modifications made by anyone within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0020] See Figure 1-Figure 2 The utility model provides a rack piston of a conveying swing mechanism, which includes a rack 1 and two split pistons 2. Both ends of the rack 1 are provided with a cavity 4, the inner wall of the cavity 4 is provided with a thread, and a through hole is provided in the split piston 2. The split piston 2 is installed on the rack 1 by a screw 3. A step structure is provided at one end of the split piston 2 facing the rack 1, and a mounting groove 9 for installing a connecting piece of the conveying swing mechanism is formed between the step structure and the rack 1.

[0021] A rack is a special type of gear distributed on a bar-shaped body. Racks are divided into spur racks and helical racks, which are used with spur and helical cylindrical gears, respectively. The tooth profile of a rack is a straight line rather than an involute (which is a flat surface for the tooth surface), equivalent to a cylindrical gear with an infinite pitch radius.

[0022] The step structure includes a positioning block 6 and a limiting block 8. The positioning block 6 is located below the limiting block 8. A positioning hole 5 is provided at the opening of the cavity 4. The rack 1 is provided with a positioning hole 5 corresponding to the positioning block 6. The positioning block 6 is inserted into the positioning hole 5. The positioning blocks 5 and 6 facilitate the insertion of the split piston 2 on the rack 1.

[0023] The limiting block 8 and the rack 1 form a mounting groove 9 , which is convenient for installing the connecting parts of the conveying swing mechanism. The diameter of the limiting block 8 is larger than the diameter of the positioning block 6 .

[0024] Positioning hole 5 is a countersunk hole. A countersunk hole is a specially designed hole with a flat or inverted tapered bottom. This design is often used to accommodate fasteners or other components for securing and connecting. Countersunk holes not only facilitate installation and removal of components but also increase the stability of the connected components. During the manufacturing process, the appropriate countersunk hole size and shape must be selected based on the desired application and specifications.

[0025] An OR ring is provided between the locating hole 5 and the locating block 6. The OR ring, commonly referred to as an O-ring, is a common sealing element widely used in the sealing systems of various mechanical devices. Made of rubber, the O-ring exhibits excellent elasticity and sealing properties, effectively preventing fluid leakage. This type of sealing ring typically consists of a silicone rubber or fluororubber interior coated with a relatively thin Teflon FEP or Teflon PFA exterior. It combines the elasticity and sealing properties of rubber with the chemical resistance of Teflon, providing improved durability and adaptability.

[0026] A limiting groove 7 is provided at the end of the split piston 2 away from the rack 1. The diameter of the limiting groove 7 is larger than the diameter of the head of the screw 3, and the height of the limiting groove 7 is larger than the height of the head of the screw 3. This facilitates the concealed installation of the screw 3 in the limiting groove 7 and prevents the screw 3 from being scratched by foreign objects and damaging the head of the screw 3 during the swinging process.

[0027] Screw 3 is a hexagonal screw. A hexagonal screw is a commonly used mechanical fastener with a hexagonal head and a threaded shank, used to fasten two objects together. Compared to ordinary screws, its main feature is the hexagonal head, which makes it easier to tighten with a wrench or spanner, improving work efficiency and safety. It is a high-strength fastener.

[0028] The working principle of this utility model is:

[0029] When the split piston 2 and the rack 1 need to be installed into the conveying swing mechanism, insert the rack 1 into the corresponding through hole in the connecting part of the conveying swing mechanism, insert the positioning block 6 of the split piston 2 into the positioning hole 5 of the rack 1, and then insert the screw 3 into the split piston 2 and screw it into the cavity 4 of the rack 1.

[0030] When replacing the sealing ring, the screw 3 needs to be removed.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These modifications and improvements will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A rack piston for a conveying swing mechanism, characterized in that: It comprises a rack (1) and two split pistons (2), both ends of the rack (1) are provided with cavities (4), the inner wall of the cavity (4) is provided with threads, the split pistons (2) are provided with through holes, the split pistons (2) are mounted on the rack (1) by screws (3), the split pistons (2) are provided with a step structure at one end facing the rack (1), and a mounting groove (9) for mounting a connecting piece of a conveying swing mechanism is formed between the step structure and the rack (1).

2. The rack piston of the conveying swing mechanism according to claim 1, characterized in that: The step structure comprises a positioning block (6) and a limiting block (8); the positioning block (6) is located below the limiting block (8); a positioning hole (5) corresponding to the positioning block (6) is provided at the opening of the cavity (4); and the positioning block (6) is plugged into the positioning hole (5).

3. The rack piston of the conveying swing mechanism according to claim 2, characterized in that: The limiting block (8) and the rack (1) form a mounting groove (9), and the diameter of the limiting block (8) is larger than the diameter of the positioning block (6).

4. The rack piston of the conveying swing mechanism according to claim 2, characterized in that: An OR ring is provided between the connection between the positioning hole (5) and the positioning block (6).

5. The rack piston of the conveying swing mechanism according to claim 1, characterized in that: A limiting groove (7) is provided at one end of the split piston (2) away from the rack (1); the diameter of the limiting groove (7) is greater than the diameter of the head of the screw (3); and the height of the limiting groove (7) is greater than the height of the head of the screw (3).

6. The rack piston of the conveying swing mechanism according to claim 1, characterized in that: The screw (3) is an external hexagonal screw.

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