Piston standard device

Abstract

The utility model relates to a piston standard device, which belongs to the technical field of pistons and comprises a piston cylinder and a piston rod matched with the piston cylinder, the end portion of the piston cylinder close to the piston rod is connected with a piston supporting piece, the piston rod is connected with the piston supporting piece in a sliding mode, and the outer diameter of the piston rod is smaller than the inner diameter of the piston cylinder. According to the piston standard device, the outer diameter of the piston rod is smaller than the inner diameter of the piston cylinder, so that when the piston rod telescopically moves in the piston cylinder, impurity particles in the piston cylinder cannot damage the piston rod or the piston cylinder and can be deposited in a gap between the piston rod and the piston cylinder.

Description

Technical Field

[0001] The utility model relates to a field, in particular to a piston standard. Background Art

[0002] In the prior art, the piston rod telescopes and moves along the inner cavity of the piston cylinder, and the outer diameter of the piston rod is equal to the inner diameter of the piston cylinder, that is, the outer wall of the piston rod and the inner wall of the piston cylinder are tightly fitted in a circle. If there are particulate impurities inside the piston cylinder, the piston rod is easily worn by the particulate impurities during telescoping, causing damage to the piston rod or the piston cylinder, and affecting the life of the piston rod or the piston cylinder. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the utility model provides a piston standard to increase the service life of the piston.

[0004] In order to achieve the above-mentioned purpose of the utility model, the utility model provides a piston standard, including a piston cylinder and a piston rod cooperating with the piston cylinder, the end of the piston cylinder close to the piston rod is connected to the piston support member, the piston rod is slidingly connected to the piston support member, and the outer diameter of the piston rod is smaller than the inner diameter of the piston cylinder.

[0005] Furthermore, the axis of the piston rod coincides with the axis of the piston cylinder.

[0006] Furthermore, the piston cylinder is arranged on a frame, and an end of the piston cylinder close to the piston rod is provided with a connecting flange, and the connecting flange is detachably connected to the piston support member.

[0007] Furthermore, a sealing ring is provided between the connecting flange and the piston support member.

[0008] Furthermore, the piston support member includes a support flange, the piston rod passes through the support flange, and an inner sealing ring that cooperates with the piston rod is provided on the inner side of the support flange.

[0009] Furthermore, a fixed support frame is provided on the frame, a plurality of guide rods are provided between the fixed support frame and the support flange, a movable bracket is sleeved on the guide rod, the movable bracket is slidably connected to the guide rod, and the movable bracket is connected to the end of the piston rod.

[0010] Furthermore, the fixed support frame is provided with a motor away from the movable support frame, the motor is connected to a threaded rod, and the threaded rod is threadedly connected to the movable support frame.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] By making the outer diameter of the piston rod smaller than the inner diameter of the piston cylinder, when the piston rod telescopes inside the piston cylinder, foreign particles inside the piston cylinder will not damage the piston rod or the piston cylinder, but will be deposited in the gap between the piston rod and the piston cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0015] Figure 3 It is a schematic cross-sectional view of an embodiment of the present utility model.

[0016] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of A in the middle. DETAILED DESCRIPTION

[0017] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The embodiments of the present invention are described below in conjunction with the drawings.

[0018] like Figure 1-4 As shown, a piston standard includes a piston cylinder 1 and a piston rod 2 that cooperates with the piston cylinder 1. The end of the piston cylinder 1 close to the piston rod 1 is connected to the piston support member. The piston rod 2 is slidably connected to the piston support member. The outer diameter of the piston rod 2 is smaller than the inner diameter of the piston cylinder 1. By making the outer diameter of the piston rod 2 smaller than the inner diameter of the piston cylinder 1, when the piston rod 2 moves telescopically inside the piston cylinder 1, foreign particles inside the piston cylinder 1 will not damage the piston rod 2 or the piston cylinder 1, but will be deposited in the gap between the piston rod 2 and the piston cylinder 1 without damaging the equipment, thereby improving the service life of the equipment.

[0019] The axis of the piston rod 2 coincides with the axis of the piston cylinder 1, and the piston rod 2 is supported by the piston support member so as to keep the axis coincident with the axis of the piston cylinder 1;

[0020] The piston cylinder 1 is arranged on the frame 9. The end of the piston cylinder 1 close to the piston rod 1 is provided with a connecting flange 3, and the connecting flange 3 is detachably connected to the piston support member; a sealing ring 10 is provided between the connecting flange 3 and the piston support member, and the connecting flange 3 and the piston support member are detachably connected to facilitate the installation and removal of the sealing ring 10. By providing the sealing ring 10, the connection between the piston rod 2 and the piston cylinder 1 can be sealed;

[0021] The piston support member includes a support flange 4, through which the piston rod 2 passes. An inner sealing ring 11 is provided on the inner side of the support flange 4 to cooperate with the piston rod 2. The inner sealing ring 11 is provided to maintain sealing performance.

[0022] A fixed support frame 6 is provided on the frame 9, and a plurality of guide rods 7 are provided between the fixed support frame 6 and the support flange 4. A movable bracket 5 is sleeved on the guide rod 7. The movable bracket 5 is slidably connected to the guide rod 7, and the movable bracket 5 is connected to the end of the piston rod 2;

[0023] The fixed support frame 6 is away from the movable support frame 5 and is provided with a motor 8. The motor 8 is connected to the threaded rod 12. The threaded rod 12 is threadedly connected to the movable support frame 5. The motor 8 drives the threaded rod 12 to rotate. The rotation of the threaded rod 12 drives the movable support frame 5 to move along the guide rod 7. The movable support frame 5 is connected to the end of the piston rod 2, thereby driving the piston rod 2 to move.

[0024] By making the outer diameter of the piston rod 2 smaller than the inner diameter of the piston cylinder 1, when the piston rod 2 moves telescopically inside the piston cylinder 1, foreign particles inside the piston cylinder 1 will not damage the piston rod 2 or the piston cylinder 1, but will be deposited in the gap between the piston rod 2 and the piston cylinder 1.

[0025] The above describes the technical solution of the present invention in conjunction with specific embodiments. However, it should be noted that the above description is only for the purpose of explaining the solution of the present invention and should not be construed in any way as a specific limitation on the scope of protection of the utility model. Based on the explanations herein, those skilled in the art can conceive of other specific embodiments of the present invention or equivalent replacements without inventive effort, and all such replacements will fall within the scope of protection of the present invention.

Claims

1. A piston standard, characterized in that: The invention comprises a piston cylinder (1) and a piston rod (2) matched with the piston cylinder (1); the end of the piston cylinder (1) close to the piston rod (2) is connected to a piston support member; the piston rod (2) is slidably connected to the piston support member; and the outer diameter of the piston rod (2) is smaller than the inner diameter of the piston cylinder (1).

2. The piston standard according to claim 1, characterized in that: The axis of the piston rod (2) coincides with the axis of the piston cylinder (1).

3. The piston standard according to claim 1, characterized in that: The piston cylinder (1) is arranged on a frame (9), and a connecting flange (3) is provided at the end of the piston cylinder (1) close to the piston rod (2), and the connecting flange (3) is detachably connected to the piston support member.

4. The piston standard according to claim 3, characterized in that A sealing ring (10) is provided between the connecting flange (3) and the piston support member.

5. The piston standard according to claim 4, characterized in that: The piston support member comprises a support flange (4), the piston rod (2) passes through the support flange (4), and an inner sealing ring (11) cooperating with the piston rod (2) is provided on the inner side of the support flange (4).

6. The piston standard according to claim 5, characterized in that: A fixed support frame (6) is provided on the frame (9), a plurality of guide rods (7) are provided between the fixed support frame (6) and the support flange (4), a movable bracket (5) is sleeved on the guide rod (7), the movable bracket (5) is slidably connected to the guide rod (7), and the movable bracket (5) is connected to the end of the piston rod (2).

7. The piston standard according to claim 6, characterized in that The fixed support frame (6) is provided with a motor (8) away from the movable bracket (5); the motor (8) is connected to a threaded rod (12); and the threaded rod (12) is threadedly connected to the movable bracket (5).

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