Piston type counterweight oil cylinder application structure with auxiliary support

Abstract

The utility model relates to the technical field of piston cylinders, in particular to a piston type counterweight oil cylinder application structure with an auxiliary support. Comprising a piston shaft, an oil cylinder body, a piston and an oil inlet, the piston shaft is arranged on a moving part in a floating and sleeving mode, the oil cylinder body is fixed to a non-moving part, and a supporting sleeve is arranged at the joint of the moving part and the non-moving part in a surrounding mode; hydraulic oil enters the oil cylinder from the oil inlet and pushes the piston shaft to move; the supporting sleeve is further provided with a sliding bearing in a matched mode, and the effects that the piston shaft is not prone to vibration, the shaft diameter is not prone to bending, the sealing effect is not affected, and the service life of the oil cylinder is prolonged are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of piston cylinders, in particular to an application structure of a piston type counterweight oil cylinder with auxiliary support. Background Art

[0002] Five-axis gantry machining centers are often used for the processing of molds and aerospace curved surface parts. The accuracy and stability of the machine tool determines the quality of the processed parts. Now the new box-in-box five-axis gantry machining center has improved the mechanical accuracy and stability of the machine tool due to the symmetrical mechanical structure;

[0003] The piston cylinder is used for the Z-axis counterweight of the machine tool to balance the weight of the moving parts of the Z-axis. Generally, it needs to reach 80% of the weight of the moving parts. The piston diameter cannot be too small. If the piston diameter is small, the oil pressure of the cylinder must be larger to meet the counterweight requirements of the machine tool. The box-in-box structure is relatively complex. The diameter of the counterweight cylinder body generally used cannot be too large. The piston cylinder with ordinary structure: the cylinder body is fixed to the non-moving part with bolts, and the piston shaft is connected to the part that needs to be moved. If the piston shaft is too long or the shaft diameter is small, the piston will deteriorate the coaxiality after long-term use or frequent vibration, resulting in bending of the shaft diameter, friction damage of the sealing ring and oil leakage. Utility Model Content

[0004] The purpose of the utility model is to provide a piston-type counterweight oil cylinder application structure with auxiliary support to address the defects in the prior art, so that the piston shaft is not easy to vibrate, the shaft diameter is not easy to bend, the sealing effect is not affected, and the service life of the oil cylinder is extended.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a piston-type counterweight cylinder application structure with auxiliary support, including a piston shaft, a cylinder body, a piston, and an oil inlet: the piston shaft floating sleeve is arranged on the moving part, the cylinder body is fixed on the non-moving part, and the support sleeve is arranged around the interface between the moving part and the non-moving part; the hydraulic oil enters the cylinder from the oil inlet and pushes the piston shaft to move; the support sleeve is also provided with a sliding bearing.

[0006] Furthermore, the piston shaft is threadedly connected and then floatingly sleeved onto the moving part.

[0007] Further, the cylinder body is fixed to the non-moving part by bolts.

[0008] Furthermore, the support sleeve is also provided with an oil discharge port which is connected with the interior of the piston shaft.

[0009] Furthermore, a sealing ring is arranged inside the oil cylinder body, and the sealing ring seals the oil overflowing from the interface between the moving part and the non-moving part.

[0010] Furthermore, a sealing sleeve is arranged outside the oil inlet.

[0011] Furthermore, the piston is integrated with the piston shaft.

[0012] The invention comprises a piston shaft, a cylinder body, a piston and an oil inlet: the piston shaft floating sleeve is arranged on a moving part, the cylinder body is fixed on a non-moving part, and a support sleeve is arranged around the interface between the moving part and the non-moving part; the hydraulic oil enters the cylinder from the oil inlet and pushes the piston shaft to move; the support sleeve is also equipped with a structure of a sliding bearing, so that the piston shaft is not easy to vibrate, the shaft diameter is not easy to bend, the sealing effect is not affected, and the service life of the cylinder is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of the application structure of a piston-type counterweight cylinder with auxiliary support of the utility model;

[0015] Figure 2 This is a front view of the application structure of a piston-type counterweight cylinder with auxiliary support of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of a piston-type counterweight cylinder with auxiliary support application structure of the utility model;

[0017] Reference numerals:

[0018] Piston shaft 1, sealing ring 2, cylinder body 3, piston 4, sealing sleeve 5, oil inlet 6, sliding bearing 7, support sleeve 8, oil discharge port 9. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] A piston type counterweight cylinder application structure with auxiliary support, such as Figure 1 , 2 As shown, it includes a piston shaft 1, a cylinder body 3, a piston 4, and an oil inlet 6: the piston shaft 1 is floatingly sleeved on the moving part, the cylinder body 3 is fixed on the non-moving part, and the support sleeve 8 is arranged around the interface between the moving part and the non-moving part; the hydraulic oil enters the cylinder from the oil inlet 6 and pushes the piston shaft 1 to move; the support sleeve 8 is also equipped with a sliding bearing 7.

[0022] Specifically, it includes a piston shaft 1, a cylinder body 3, a piston 4, and an oil inlet 6: the piston shaft 1 is floatingly sleeved on a moving part, the cylinder body 3 is fixed on a non-moving part, and a support sleeve 8 is arranged around the interface between the moving part and the non-moving part; the hydraulic oil enters the cylinder from the oil inlet 6 and pushes the piston shaft 1 to move; the support sleeve 8 is also equipped with a structure of a sliding bearing 7, so that the hydraulic oil enters the cylinder from the oil inlet 6 and pushes the piston shaft 1 to move and then drive the parts to move, the support sleeve 8 makes the piston shaft 1 have two supporting points, so that the piston shaft 1 is not easy to vibrate, the shaft diameter is not easy to bend, and the sealing effect is not affected, the sliding bearing 7 significantly reduces the friction coefficient between the piston rod and the inner wall of the cylinder, so that the piston is subjected to less resistance during movement, reduces the heat and wear generated by friction, and extends the service life of the cylinder.

[0023] As a preferred embodiment of the above, Figure 3 As shown, the piston shaft 1 is threadedly connected and then floated onto the moving part.

[0024] Specifically, the piston shaft 1 is threadedly connected and then floated onto the moving part to ensure a stable connection between the piston shaft 1 and the moving part. The sealing performance between the piston shaft and the moving part can also be ensured, allowing the piston shaft to have a certain slight displacement during the movement, thereby avoiding jamming or wear problems caused by insufficient part processing accuracy or assembly errors.

[0025] As a preferred embodiment of the above, Figure 3 As shown, the cylinder body 3 is fixed to the non-moving parts with bolts.

[0026] Specifically, the structure in which the cylinder body 3 is fixed to the non-moving component with bolts can ensure a stable connection between the cylinder body 3 and the non-moving component, and can be used in conjunction with a sealing gasket or a sealing ring to further improve the sealing performance between the cylinder body 3 and the non-moving component.

[0027] As a preferred embodiment of the above, Figure 1 As shown, the support sleeve 8 is also provided with an oil discharge port 9 which is connected with the interior of the piston shaft 1 .

[0028] As a preferred embodiment of the above, Figure 3 As shown, the sealing ring 2 is arranged on the inner side of the oil cylinder body 3, and the sealing ring 2 seals the oil overflowing from the interface between the moving parts and the non-moving parts.

[0029] As a preferred embodiment of the above, Figure 3 As shown, the sealing sleeve 5 is arranged outside the oil inlet 6.

[0030] Specifically, a sealing ring 2 is arranged on the inner side of the cylinder body 3, and the sealing ring 2 seals the oil overflowing from the interface between the moving parts and the non-moving parts. The sealing sleeve 5 is arranged outside the oil inlet 6 to ensure the stability and reliability of the hydraulic system inside the cylinder and avoid performance degradation or failure due to leakage.

[0031] As a preferred embodiment of the above, Figure 3 As shown, the piston 4 is integral with the piston shaft 1 .

[0032] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A piston-type counterweight cylinder application structure with auxiliary support, characterized in that: It includes a piston shaft (1), a cylinder body (3), a piston (4), and an oil inlet (6): The piston shaft (1) is floatingly sleeved on the moving part, the oil cylinder body (3) is fixed on the non-moving part, and the support sleeve (8) is arranged around the interface between the moving part and the non-moving part; The hydraulic oil enters the oil cylinder through the oil inlet (6) and pushes the piston shaft (1) to move; The support sleeve (8) is also provided with a sliding bearing (7).

2. The piston-type counterweight cylinder application structure with auxiliary support according to claim 1 is characterized in that: The piston shaft (1) is connected by threads and then floated onto the moving part.

3. The piston-type counterweight cylinder application structure with auxiliary support according to claim 2 is characterized in that: The cylinder body (3) is fixed to the non-moving parts by bolts.

4. The piston-type counterweight cylinder application structure with auxiliary support according to claim 3 is characterized in that: The support sleeve (8) is also provided with an oil discharge port (9) which is in communication with the interior of the piston shaft (1).

5. The piston-type counterweight cylinder application structure with auxiliary support according to claim 4 is characterized in that: The sealing ring (2) is arranged on the inner side of the oil cylinder body (3), and the sealing ring (2) seals the oil overflowing from the interface between the moving part and the non-moving part.

6. The piston-type counterweight cylinder application structure with auxiliary support according to claim 5 is characterized in that: The sealing sleeve (5) is arranged outside the oil inlet (6).

7. The piston-type counterweight cylinder application structure with auxiliary support according to claim 6 is characterized in that: The piston (4) is integral with the piston shaft (1).

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