Hydraulic cylinder piston assembly
Through the removable connection design of the piston and hydraulic rod, the torque damage problem of hydraulic cylinder piston assembly when wear is uneven, realizing the removable replacement of the components and the overall pressure bearing performance.
Patent Information
- Application Number
- CN202422428306.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-09
AI Technical Summary
When the existing hydraulic cylinder piston assembly is unevenly worn by the piston and the piston rod, it causes torsion damage to the connection, making it difficult to replace effectively, resulting in waste of materials.
The piston and hydraulic rod are removable connection design, which divides the piston into main parts and supporting parts, and is connected through the socket of the plug and socket. The matching parts form a piston with the main parts. The shock absorber is used to offset torque and ensures the overall pressure bearing performance.
It realizes that only the corresponding components are replaced when the piston or hydraulic rod is damaged, reducing consumables, preventing damage to the connection port, and maintaining the pressure bearing performance of the piston.
Smart Images
Figure CN223136555U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a piston assembly of a hydraulic cylinder. Background Art
[0002] In the prior art, the piston assembly of a hydraulic cylinder usually welds the piston and the piston rod into a unified whole. After being welded into one body, it can bear greater loads. However, during use, since the wear degrees of the piston and the piston rod are different, but the integral structure only allows for integral replacement, resulting in great waste in use.
[0003] A piston assembly of a hydraulic cylinder proposed in Chinese authorized patent application No. 2022223327361 includes a piston part and a piston rod part. The piston rod part is fixedly welded to the piston part, and the piston rod part is assembled by a main rod, a connecting piece and an extension rod which are connected in sequence from the head to the tail. One end of the extension rod is fixedly welded to the piston part.
[0004] The above patent seemingly adopts a detachable connection. When the piston or the piston rod is severely worn, the corresponding part can be replaced. However, in fact, when the piston moves, the force is uneven, and torsion will be generated at the connection between the piston and the piston rod. Therefore, in the above patent, the threads at the connection between the main rod, the connecting piece and the extension rod will be damaged due to the torsion, and there is a high probability that the old main rod cannot be pulled out and the new main rod cannot be inserted, so the problem of replacement waste cannot be effectively solved. Summary of the Invention
[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a piston assembly of a hydraulic cylinder, which has the advantages of being able to balance the transportation and feeding efficiency of double-layer fins and the structural cost.
[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
[0007] A piston assembly of a hydraulic cylinder includes: a piston, and a hydraulic rod detachably connected to the piston; the piston includes a main part and a matching part detachably connected to the main part; the hydraulic rod includes a main rod and a plug one arranged at one end of the main rod and sleeved with the main part.
[0008] Preferably, the main part includes a cylinder, a socket one opened at the center of the cylinder, a plurality of socket two opened around the socket one, and bolts arranged in the socket two; the socket two is opened on the cylinder and is distributed in an array around the center of the cylinder; the bolts are installed on the side surface of the cylinder and pass through the socket two; the hydraulic rod is connected to the main part by inserting the plug one into the socket one.
[0009] Preferably, the accessory includes a shock absorber, a ring for installing the shock absorber, a plurality of plugs II arranged on the ring, and bolt holes opened on the plugs II; the plugs II are distributed in an array around the center of the ring.
[0010] Preferably, the diameter of the socket I is larger than the inner diameter of the ring.
[0011] Preferably, the socket II and the plug II are arranged in pairs, and there are six pairs.
[0012] Preferably, the shock absorber is installed inside the ring and includes a shock-absorbing shell, a spring installed inside the shock-absorbing shell, and a shock-absorbing rod installed on the spring.
[0013] Compared with the prior art, the present application has the following beneficial effects:
[0014] In the present utility model, the piston and the hydraulic rod are detachably connected. In order not to reduce the pressure-bearing effect of the piston, the piston is split into a main part and an accessory. Under the combined action of the two, not only can the hydraulic rod and the piston be guaranteed to be integrated to achieve a high pressure-bearing effect, but also when the hydraulic rod or the piston is severely damaged, only the corresponding part needs to be replaced, reducing the consumption of materials; specifically, for this piston assembly, the plug I is inserted into the socket I to connect the hydraulic rod and the main part in a socket connection manner, and at the same time, the accessory and the main part form a piston, and the hydraulic rod is fixed inside the piston. The socket connection method can not only prevent damage to the connection port caused by torsion and the problem of being unable to replace the corresponding components, but also ensure the pressure-bearing performance of the piston by using the connection method between the accessory and the main part. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present utility model and do not limit the present utility model.
[0016] Figure 1 It is a schematic structural diagram of a hydraulic cylinder piston assembly according to the present utility model;
[0017] Figure 2 It is Figure 1 a schematic structural diagram of the hydraulic rod in
[0018] Figure 3 It is Figure 1 a front view structural diagram of the main part in
[0019] Figure 4 It is Figure 3 a top view structural diagram of
[0020] Figure 5 It is Figure 1 a front view structural diagram of the accessory in
[0021] Figure 6 For Figure 5 the top view structural schematic diagram;
[0022] Figure 7 For Figure 1 the cross-sectional structural schematic diagram of the piston in Specific Embodiments
[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will further elaborate on the present utility model in conjunction with the accompanying drawings. Components of the embodiments of the present utility model described and illustrated in the accompanying drawings herein can generally be arranged and designed in a variety of different configurations. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.
[0024] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0025] Unless otherwise defined, the technical terms or scientific terms used in this patent document should have the ordinary meanings understood by those of ordinary skill in the field to which the present utility model pertains. The "first", "second" and similar terms used in the description of the present utility model patent specification and claims do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms such as "a", "an" or "the" do not denote a quantity limitation, but indicate the existence of at least one. The terms such as "comprising" or "including" mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. The terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly. It is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation of the present utility model.
[0026] The following will elaborate on some embodiments of the present utility model in conjunction with the accompanying drawings. Without conflict, the features in the following embodiments can be combined with each other.
[0027] Embodiment 1:
[0028] A hydraulic cylinder piston assembly, comprising: a piston 10 and a hydraulic rod 20 detachably connected to the piston 10; the piston 10 includes a main part 11 and a matching part 12 detachably connected to the main part 11; the hydraulic rod 20 includes a main rod 21 and a first plug 22 disposed at one end of the main rod 21 and sleeved with the main part 11.
[0029] The main problem solved by this hydraulic cylinder piston assembly is that while not reducing the pressure-bearing performance of the piston 10, when the piston 10 or the hydraulic rod 20 is damaged, only the corresponding component needs to be replaced; to ensure the pressure-bearing performance of the piston 10, the main problem to be solved is to ensure the integrity of the piston 10 and the hydraulic rod 20. In the prior art, welding is generally used on both sides, but this will cause material waste during replacement.
[0030] As Figure 1 and Figure 2 shown, this embodiment improves from the above problems. It is necessary to ensure the integrity of the piston 10 and the hydraulic rod 20, and at the same time ensure that they can be replaced separately. Starting from the problem of separate replacement, the piston 10 and the hydraulic rod 20 are detachably connected. However, a general detachable connection cannot achieve the integrity effect of the piston 10 and the hydraulic rod 20. Therefore, in this embodiment, the piston 10 is divided into a main part 11 and a matching part 12, and the hydraulic rod 20 is divided into a main rod 21 and a first plug 22. After the first plug 22 is inserted into the main part 11, the matching part 12 is connected to the main part 11 to press the first plug 22 tightly inside the main part 11, so that the hydraulic rod 20 and the piston 10 form a unified whole. In this way, both the pressure-bearing performance of the hydraulic cylinder piston assembly is ensured, and when the hydraulic rod 20 or the piston 10 is damaged, only the damaged component needs to be replaced.
[0031] Further, the main part 11 includes a cylinder 111, a first socket 112 opened at the center of the cylinder 111, a plurality of second sockets 113 opened around the first socket 112, and bolts 114 disposed in the second sockets 113; the second sockets 113 are opened on the cylinder 111 and are distributed in an array around the center of the cylinder 111; the bolts 114 are installed on the side surface of the cylinder 111 and pass through the second sockets 113; the hydraulic rod 20 is connected to the main part 11 by inserting the first plug 22 into the first socket 112.
[0032] Further, the matching part 12 includes a shock absorber 121, a ring 122 for installing the shock absorber 121, a plurality of second plugs 123 disposed on the ring 122, and bolt holes 124 opened on the second plugs 123; the second plugs 123 are distributed in an array around the center of the ring 122.
[0033] Further, the diameter of the first socket 112 is larger than the inner diameter of the ring 122.
[0034] Further, the second socket 113 is arranged in a paired manner with the second plug 123, and there are six pairs.
[0035] Further, the shock absorber 121 is installed inside the ring 122 and includes a shock-absorbing shell 1211, a spring 1212 installed inside the shock-absorbing shell 1211, and a shock-absorbing rod 1213 installed on the spring 1212.
[0036] As Figures 3 to 7 shown, in order to cooperate with the first plug 22, a first socket 112 is opened at the center of the cylinder 111. To ensure that the first plug 22 does not shake inside the first socket 112 after assembly and makes the first plug 22 and the first socket 112 in close contact, the first plug 22 and the first socket 112 can also adopt a special-shaped concave-convex structure to complete the tight connection.
[0037] Meanwhile, in order to press the first plug 22 tightly inside the first socket 112, after the first plug 22 is inserted into the first socket 112, the fitting 12 is sleeved on the main rod 21, and the second plug 123 on the fitting 12 is inserted into the corresponding second socket 113, and the bolt 114 is screwed into the second plug 123 through the bolt hole 124. At this time, the fitting 12 is closely attached to the main part 11 to form a piston 10.
[0038] In order to prevent damage to the piston 10 caused by torque during the movement of the hydraulic rod 20, six shock absorbers 121 are arranged inside the ring 122. The six shock absorbers 121 are distributed in an array around the center of the ring 122. When the hydraulic rod 20 generates a slight twist, the torque first acts on the shock-absorbing rod 1213 and is then offset by the elastic force of the spring 1212.
[0039] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.
Claims
1. A hydraulic cylinder piston assembly, characterized in that, Comprising: A piston (10) and a hydraulic rod (20) detachably connected to the piston (10); the piston (10) includes a main part (11) and a matching part (12) detachably connected to the main part (11); the hydraulic rod (20) includes a main rod (21) and a first plug (22) provided at one end of the main rod (21) and sleeved with the main part (11).
2. A hydraulic cylinder piston assembly according to claim 1, wherein The main part (11) includes a cylinder (111), a first socket (112) opened at the center of the cylinder (111), a plurality of second sockets (113) opened around the first socket (112), and bolts (114) provided in the second sockets (113); the second sockets (113) are opened on the cylinder (111) and are arranged in an array around the center of the cylinder (111); the bolts (114) are installed on the side surface of the cylinder (111) and pass through the second sockets (113); the hydraulic rod (20) is connected to the main part (11) by inserting the first plug (22) into the first socket (112).
3. A hydraulic cylinder piston assembly according to claim 2, characterized in that, The matching part (12) includes a shock absorber (121), a ring (122) for installing the shock absorber (121), a plurality of second plugs (123) provided on the ring (122), and bolt holes (124) opened on the second plugs (123); the second plugs (123) are arranged in an array around the center of the ring (122).
4. A hydraulic cylinder piston assembly according to claim 3, wherein, The diameter of the first socket (112) is larger than the inner diameter of the ring (122).
5. A hydraulic cylinder piston assembly according to claim 4, characterized in that, The second sockets (113) and the second plugs (123) are paired and there are six pairs.
6. A hydraulic cylinder piston assembly according to claim 5, wherein, The shock absorber (121) is installed inside the ring (122) and includes a shock-absorbing shell (1211), a spring (1212) installed inside the shock-absorbing shell (1211), and a shock-absorbing rod (1213) installed on the spring (1212).