Piston rod convenient to assemble

Abstract

The utility model relates to the technical field of piston rod structures, in particular to a piston rod convenient to assemble. Comprising a piston rod body, the piston rod body is composed of a rod body, a sealing ring, a piston and a bolt, a mounting groove and a threaded groove are formed in the end of the rod body, the fixed shell is arranged on the outer side of the rod body, the rotating shell is rotationally connected to the fixed shell, and the two semicircular plates are connected to the side face of the fixed shell and the side face of the rotating shell respectively. Through cooperation of the fixed shell, the rotating shell, the semicircular plate and the conical block, the sealing ring can be easily opened and guided to be smoothly arranged on the mounting groove in a sleeving mode, the risk that the sealing ring is clamped or damaged in the mounting process can be avoided, the sealing ring does not need to be manually arranged at the end of the rod body in a sleeving mode, and the mounting efficiency is improved. And then the sealing ring is expanded by a tool and gradually pushed to a preset position, so that the mounting efficiency and reliability of the sealing ring can be improved, and the assembly process of the piston rod is simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of piston rod structure, especially a piston rod convenient to assemble. BACKGROUND

[0002] With the continuous improvement of industrial automation level, as an important power transmission mode, hydraulic system has been widely used in various mechanical equipment, and as one of the core components of hydraulic cylinder, piston rod is responsible for converting hydraulic energy into linear motion and driving external equipment to work, therefore, the performance of piston rod directly affects the efficiency and reliability of the whole hydraulic system.

[0003] When installing the traditional piston rod, the sealing ring needs to be sleeved on the rod body of the piston rod first, and then the piston is fixed at the end of the rod body through threaded connection. However, in order to ensure the sealing effect, the inner diameter of the sealing ring is usually designed to be slightly smaller than the outer diameter of the rod body, and during installation, the sealing ring needs to be manually sleeved on the end of the rod body first, and then a rod-shaped tool is inserted between the sealing ring and the rod body, and the sealing ring is expanded by rotating and pressing, and gradually pushed to the predetermined installation position. This process is not only complicated to operate and time-consuming, but also easy to damage the sealing ring during installation, especially when the sealing ring passes through the threaded groove at the end of the rod body, it is easy to be stuck, further increasing the installation difficulty. SUMMARY

[0004] Therefore, the utility model provides a kind of piston rod convenient to assemble, can overcome the shortcoming that the end sealing ring of existing piston rod is not only complicated to operate during installation, but also time-consuming, and sealing ring is easy to be stuck when passing through the threaded groove at the end of the rod body.

[0005] The technical implementation scheme of the utility model is: a kind of piston rod convenient to assemble, including piston rod body, piston rod body is composed of rod body, sealing ring, piston and bolt, installation groove and threaded groove are opened at the end of rod body, further including fixed shell, rotating shell and semicircular plate, fixed shell is arranged on the outside of rod body, rotating shell is rotatably connected to fixed shell, two semicircular plates are respectively connected to the side surface of fixed shell and rotating shell.

[0006] In a preferred embodiment of the utility model, the end of the semicircular plate is provided with an inclined surface.

[0007] In a preferred embodiment of the utility model, it further includes pinch plates, two pinch plates are respectively connected to the top of fixed shell and rotating shell.

[0008] In a preferred embodiment of the utility model, it further includes magnet one, magnet one is connected to the side surface of pinch plate, and two magnets are attracted by magnetic force.

[0009] In a preferred embodiment of the utility model, still include tapering block and magnet two, magnet two is connected in the inside of tapering block, and magnet two is adsorbed in the end of rod body through magnetic force.

[0010] In a preferred embodiment of the utility model, the end of tapering block is provided with a groove matched with the end of rod body.

[0011] Compared with the prior art, the utility model has the following advantages: the utility model can easily open the sealing ring and guide it to be smoothly sleeved on the installation groove through the cooperation of the fixed shell, the rotating shell, the semicircular plate and the tapering block, can avoid the risk that the sealing ring is stuck or damaged during installation, does not need manual sleeve the sealing ring on the end of rod body, then uses the tool to expand the sealing ring and gradually pushes to the predetermined position, so it can improve the installation efficiency and reliability of the sealing ring, and simplify the assembly process of the piston rod. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0013] Figure 2 It is the specific structure schematic diagram of the rod body of the utility model.

[0014] Figure 3 It is the installation schematic diagram of the fixed shell, the rotating shell, the semicircular plate, the pinch plate and magnet one of the utility model.

[0015] Figure 4 It is the specific structure schematic diagram of the semicircular plate of the utility model.

[0016] Figure 5 It is the specific structure schematic diagram of the tapering block and magnet two of the utility model.

[0017] Among them, the above-mentioned drawing includes the following mark: 1-rod body, 101-installation groove, 102-thread groove, 2-sealing ring, 3-piston, 4-bolt, 5-fixed shell, 6-rotating shell, 7-semicircular plate, 701-inclined surface, 8-pinch plate, 9-magnet one, 10-tapering block, 1001-groove, 11-magnet two. DETAILED DESCRIPTION

[0018] First of all, it should be pointed out that in different described embodiments, same components are provided with same drawing marks or same component names, wherein the disclosure contained in the whole specification can be transferred to the same components with same drawing marks or same component names in meaning. The position description selected in the specification, such as up, down, lateral, etc. also refers to the directly described and shown drawings and is transferred to new positions in meaning when the position changes.

[0019] Embodiment: a piston rod convenient to assemble, such as Figures 1-4As shown, including the piston rod body, the piston rod body is by the rod body 1, sealing ring 2, piston 3 and bolt 4, the rod body 1 left end opening has installation groove 101 and thread groove 102, sealing ring 2 can be installed in the installation groove 101, piston 3 and bolt 4 can be threaded on the thread groove 102 of the rod body 1, and the bolt 4 is located in the left side of the piston 3, the bolt 4 is used for limiting locking the piston 3, the structure of the above-mentioned piston rod body is the prior art, and will not be described in detail, further comprising a fixed shell 5, a rotating shell 6 and a semicircular plate 7, the outer side of the rod body 1 is provided with the fixed shell 5, the lower part of the fixed shell 5 is rotatably connected with the rotating shell 6, the shape of the fixed shell 5 and the rotating shell 6 is semicylindrical, and the fixed shell 5 and the rotating shell 6 are combined to form a complete cylindrical shape, and the inner diameter of the above-mentioned cylinder is matched with the outer diameter of the outer wall of the rod body 1, so that the fixed shell 5 and the rotating shell 6 can completely wrap the outer wall of the rod body 1, and are attached to the outer wall of the rod body 1, and the left side of the fixed shell 5 and the rotating shell 6 is connected with the semicircular plate 7, when the fixed shell 5 and the rotating shell 6 are combined, the two semicircular plates 7 are in contact with each other to form a ring, and the outer wall of the two semicircular plates 7 is provided with an inclined surface 701.

[0020] As shown in Figure 3 It also includes a pinch plate 8 and a magnet 9, the top of the fixed shell 5 and the rotating shell 6 is connected with the pinch plate 8, the shape of the pinch plate 8 is L-shaped, and the side of the two pinch plates 8 close to each other is connected with the magnet 9, when the fixed shell 5 and the rotating shell 6 are combined, the two pinch plates 8 are in contact to form a U shape, and the two magnets 9 can be in contact and attracted by magnetic force.

[0021] As shown in Figure 1 And Figure 5 It also includes a tapered block 10 and a magnet 11, the outer diameter of the tapered block 10 gradually decreases from right to left, and the magnet 11 is connected in the middle of the tapered block 10, the tapered block 10 can be fixed at the left end of the rod body 1 through the magnetic force of the magnet 11, and the right end of the tapered block 10 is provided with a recess 1001 matched with the end of the rod body 1.

[0022] When the piston rod body needs to be assembled, the tapered block 10 can be fixed to the left end of the rod body 1 by the action of the magnet 11, at this time the groove 1001 on the tapered block 10 can completely cover the left end of the rod body 1, the right end of the outer wall of the tapered block 10 contacts the left end of the threaded groove 102, then the inner wall of the fixed shell 5 is attached to the outer wall of the rod body 1, the left end of the semicircular plate 7 on the fixed shell 5 contacts the right end of the tapered block 10, the rotating shell 6 is turned up and closed, so that the inner wall of the rotating shell 6 is attached to the outer wall of the rod body 1, at this time the left end of the semicircular plate 7 on the rotating shell 6 also contacts the right end of the tapered block 10, and under the action of the inclined surface 701, a smooth transition is formed between the outer wall of the tapered block 10 and the outer wall of the semicircular plate 7, at the same time, the two magnets 9 contact each other and are attracted by magnetic force, so that the positions of the fixed shell 5 and the rotating shell 6 are fixed, so that the fixed shell 5 and the rotating shell 6 can completely wrap the threaded groove 102 and the mounting groove 101 on the left end of the rod body 1; then the sealing ring 2 can be sleeved on the outside of the tapered block 10, and the sealing ring 2 is moved to the right, when the inner wall of the sealing ring 2 contacts the outer wall of the tapered block 10, the outer wall of the tapered block 10 can evenly support the sealing ring 2 around, then the sealing ring 2 can be smoothly sleeved on the outside of the two semicircular plates 7 along the inclined surface 701, then the fixed shell 5 and the rotating shell 6 can be manually moved to the right along the rod body 1 until the mounting groove 101 is exposed, at this time the sealing ring 2 on the semicircular plate 7 can be moved to the left, so that the sealing ring 2 can be smoothly sleeved on the mounting groove 101 along the inclined surface 701; then the piston 3 and the bolt 4 can be threadedly installed on the left end of the rod body 1 under the guidance of the tapered block 10, which can prevent the right end of the inner wall of the piston 3 from colliding with the left end of the rod body 1 and being damaged, then the two pinch plates 8 are moved away from each other, so that the two magnets 9 are separated, then the fixed shell 5 and the rotating shell 6 are removed from the rod body 1, and finally the tapered block 10 is removed from the left end of the rod body 1.

[0023] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A piston rod which is easy to assemble, comprising a piston rod body which is composed of a rod body (1), a sealing ring (2), a piston (3) and a bolt (4), the rod body (1) has an installation groove (101) and a threaded groove (102) at its end, characterized in that, It also includes fixed shell (5), rotating shell (6) and semicircular plate (7), fixed shell (5) is arranged outside the rod body (1), rotating shell (6) is rotatably connected to the fixed shell (5), two semicircular plates (7) are respectively connected to the side surface of the fixed shell (5) and the rotating shell (6); It also includes tapered block (10) and magnet two (11), magnet two (11) is connected to the inside of tapered block (10), and magnet two (11) is adsorbed on the end of rod body (1) by magnetic force.

2. A piston rod for easy assembly according to claim 1, characterized in that The end of semicircular plate (7) is provided with inclined surface (701).

3. A piston rod for easy assembly according to claim 2, characterized in that It also includes pinch plate (8), two pinch plates (8) are respectively connected to the top of fixed shell (5) and rotating shell (6).

4. A piston rod for easy assembly according to claim 3, characterized in that It also includes magnet one (9), magnet one (9) is connected to the side surface of pinch plate (8), and two magnet one (9) are attracted by magnetic force.

5. A piston rod for facilitating assembly according to claim 4, characterized in that The end of tapered block (10) is provided with groove (1001) matched with the end of rod body (1).

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