Expansion piece vertical jacking double-gas-path slip shaft

Abstract

The utility model relates to the technical field of slip shafts, in particular to an expansion piece vertical jacking double-gas-path slip shaft which comprises a main shaft located in the center, a left gas inlet ring and a right gas inlet ring are arranged on the main shaft in a sleeved mode, side face piston parts are arranged in the left gas inlet ring and the right gas inlet ring, an expansion piece supporting part is arranged between the left gas inlet ring and the right gas inlet ring, and the expansion piece supporting part is connected with the main shaft in a sleeved mode. The expansion piece supporting part comprises an expansion piece seat, a plurality of expansion pieces arranged on the expansion piece seat and a radial expansion piece piston which is arranged in the expansion piece seat and can jack up the expansion pieces, the radial expansion piece piston pushes the expansion pieces to move in the radial direction, and the tensioning degree of the expansion pieces to a machined product is increased; the radial expansion piece piston right opposite to the expansion piece is arranged in the expansion piece seat, the radial expansion piece piston can push the expansion piece to move in the radial direction, and therefore the expansion piece can be promoted to directly act on a machined product, the tensioning degree of the expansion piece on the machined product is enhanced, stress is more direct, and a better tensioning state can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of slip shafts, in particular to a double-air-circuit slip shaft with vertically jacked-up expanding pieces. Background Art

[0002] For the existing double-air-circuit slip shaft, the expanding piece jacking method is mostly to push the expanding piece seat through a piston moving left and right, and use the inclined plane friction to jack up the expanding piece, so as to use the jacked-up expanding piece to tighten the processed product. Although this method can also jack up the expanding piece, due to the force direction coming from the inclined plane friction of the expanding piece seat, the force is not direct, which will indirectly affect the tightening state of the expanding piece on the processed product. In view of this, we propose a double-air-circuit slip shaft with vertically jacked-up expanding pieces. Content of the Utility Model

[0003] In order to make up for the above deficiencies, the utility model provides a double-air-circuit slip shaft with vertically jacked-up expanding pieces.

[0004] The technical solution of the utility model is as follows:

[0005] A double-air-circuit slip shaft with vertically jacked-up expanding pieces includes a main shaft located at the central position. A left air inlet ring and a right air inlet ring are sleeved on the main shaft. A side piston part is arranged inside the left air inlet ring and the right air inlet ring. A expanding piece support part is arranged between the left air inlet ring and the right air inlet ring. The expanding piece support part includes an expanding piece seat, a plurality of expanding pieces arranged on the expanding piece seat, and a radial expanding piece piston arranged inside the expanding piece seat and capable of jacking up the expanding piece. The radial expanding piece piston pushes the expanding piece to move radially, increasing the tightening degree of the expanding piece on the processed product.

[0006] Preferably, an upper air circuit and a lower air circuit parallel to each other are arranged inside the main shaft.

[0007] Preferably, the side piston part is composed of a plurality of side circumferential pistons arranged inside the left air inlet ring and the right air inlet ring.

[0008] Preferably, side circumferential piston air channels are arranged at the air outlet positions of the left air inlet ring and the right air inlet ring facing each side circumferential piston.

[0009] Preferably, radial expanding piece piston air channels are arranged at the positions of the main shaft interior facing each radial expanding piece piston. The air inlet of each radial expanding piece piston is communicated with the upper air circuit through the radial expanding piece piston air channel, and the air inlet of the side circumferential piston is communicated with the lower air circuit through the side circumferential piston air channel.

[0010] Preferably, the expanding piece support part further includes a reset elastic sheet connected to the radial expanding piece piston.

[0011] Preferably, bearings are arranged inside the expanding piece seat.

[0012] Preferably, an accommodation groove for accommodating a radial expansion piece piston is provided inside the expansion piece seat, and the radial expansion piece piston is fixedly installed in the accommodation groove.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By arranging a radial expansion piece piston facing the expansion piece inside the expansion piece seat, the present utility model utilizes the radial expansion piece piston to push the expansion piece to move radially, so as to enable the expansion piece to directly act on the processed product, enhance the tightening degree of the expansion piece on the processed product, make the force more direct, and achieve a better tightening state. After the action force of the radial expansion piece piston ends, the radial expansion piece piston and the expansion piece can be pulled back to their original positions automatically by the reset elastic piece. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a sectional view of the present utility model;

[0017] Figure 3 is the present utility model Figure 2 a sectional view taken along the direction of A-A in.

[0018] In the figure:

[0019] 1, main shaft; 2, upper air passage; 3, lower air passage; 4, left intake ring; 5, side circumferential piston; 6, side circumferential piston air passage; 7, first sealing ring; 8, right intake ring; 9, expansion piece seat; 10, expansion piece; 11, radial expansion piece piston; 12, bearing; 13, radial expansion piece piston air passage; 14, second sealing ring; 15, expansion piece fixing screw; 16, reset elastic piece fixing screw; 17, reset elastic piece. Specific Embodiments

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. 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. Therefore, it should not be construed as a limitation to the present utility model.

[0022] Please refer to Figures 1-3 , the above technical solution of the present utility model is described in detail through the following embodiments:

[0023] A swelling sheet vertical lifting double-airway slip shaft includes a main shaft 1 located at the central position. A left air inlet ring 4 and a right air inlet ring 8 are sleeved on the main shaft 1. A side piston part is provided inside the left air inlet ring 4 and the right air inlet ring 8. A swelling sheet support part is provided between the left air inlet ring 4 and the right air inlet ring 8. The swelling sheet support part includes a swelling sheet seat 9, a plurality of swelling sheets 10 provided on the swelling sheet seat 9, and a radial swelling sheet piston 11 provided inside the swelling sheet seat 9 and capable of lifting the swelling sheet 10. The radial swelling sheet piston 11 pushes the swelling sheet 10 to move radially, increasing the tightening degree of the swelling sheet 10 on the processed product.

[0024] As a preference of this embodiment, an upper air passage 2 and a lower air passage 3 that are parallel to each other are provided inside the main shaft 1.

[0025] As a preference of this embodiment, the side piston part is composed of a plurality of side circumferential pistons 5 provided inside the left air inlet ring 4 and the right air inlet ring 8.

[0026] As a preference of this embodiment, side circumferential piston air passages 6 are provided at the air outlet positions of the left air inlet ring 4 and the right air inlet ring 8 that are opposite to each side circumferential piston 5.

[0027] As a preference of this embodiment, radial swelling sheet piston air passages 13 are provided at the positions of the main shaft 1 that are opposite to each radial swelling sheet piston 11. The air inlet of each radial swelling sheet piston 11 is communicated with the upper air passage 2 through the radial swelling sheet piston air passage 13. External gas enters the radial swelling sheet piston 11 from the upper air passage 2, so as to push the swelling sheet 10 to move. By using the movement of the swelling sheet 10, the tightening degree on the processed product can be directly increased, the force is more direct, and a better tightening state can be achieved.

[0028] Preferably, in this embodiment, the number of the side circumferential pistons 5 is 18, which are evenly distributed on both inner sides of the left intake ring 4 and the right intake ring 8. By providing the 18 side circumferential pistons 5, the frictional torque between the slip shaft and the slip ring can be effectively increased. The air inlet of the side circumferential piston 5 is connected to the lower air passage 3 through the side circumferential piston air passage 6. The outside air enters the side circumferential piston 5 from the lower air passage 3, and the frictional torque between the slip shaft and the slip ring is increased by the side circumferential piston 5.

[0029] Preferably, in this embodiment, the expanding piece support portion further includes a return spring piece 17 connected to the radial expanding piece piston 11. The setting of the return spring piece 17 can pull the radial expanding piece piston 11 and the expanding piece 10 to automatically reset without the action of external air pressure.

[0030] It should be added that the expanding piece 10 is fixed to one end of the radial expanding piece piston 11 through the expanding piece fixing screw 15, and the return spring piece 17 is fixed to the other end of the radial expanding piece piston 11 through the return spring piece fixing screw 16.

[0031] Preferably, in this embodiment, bearings 12 are provided inside the expanding piece seat 9 to ensure the free rotation of the expanding piece seat 9 on the main shaft 1.

[0032] First sealing rings 7 are provided between the left intake ring 4 and the main shaft 1 and between the right intake ring 8 and the main shaft 1, and second sealing rings 14 are provided between the side circumferential piston 5 and the intake ring and between the radial expanding piece piston 11 and the expanding piece seat 9 to increase the sealing performance.

[0033] Preferably, in this embodiment, a receiving groove for receiving the radial expanding piece piston 11 is provided inside the expanding piece seat 9, and the radial expanding piece piston 11 is fixedly installed in the receiving groove.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A sheet expansion vertical lifting dual-air path slip differential shaft, comprising a main shaft (1) located at a central position, a left air intake ring (4) and a right air intake ring (8) sleeved on the main shaft (1), side piston parts are arranged inside the left air intake ring (4) and the right air intake ring (8), and a sheet expansion support part is arranged between the left air intake ring (4) and the right air intake ring (8), characterized in that: The sheet expansion support portion comprises a sheet expansion seat (9), a plurality of sheet expansion plates (10) arranged on the sheet expansion seat (9), and a radial sheet expansion piston (11) arranged inside the sheet expansion seat (9) and capable of lifting the sheet expansion plates (10); the radial sheet expansion piston (11) pushes the sheet expansion plates (10) to move radially, thereby increasing the tightness of the sheet expansion plates (10) on the processed product.

2. The expansion plate vertical lifting dual-gas path slip differential shaft according to claim 1, characterized in that: An upper air path (2) and a lower air path (3) parallel to each other are arranged inside the main shaft (1).

3. The expansion plate vertical lifting dual-air path slip differential shaft according to claim 2, characterized in that: The side piston part is composed of a plurality of side circumferential pistons (5) arranged inside the left intake ring (4) and the right intake ring (8).

4. The expansion plate vertical lifting dual-air path slip differential shaft according to claim 3, characterized in that: The left air intake ring (4) and the right air intake ring (8) are both provided with side circumferential piston air passages (6) at the air outlets of each side circumferential piston (5).

5. The expansion plate vertical lifting dual-air path slip differential shaft according to claim 4, characterized in that: A radial sheet expansion piston air channel (13) is provided inside the main shaft (1) at a position directly opposite to each radial sheet expansion piston (11); an air inlet of each radial sheet expansion piston (11) is connected to the upper air path (2) via the radial sheet expansion piston air channel (13); and an air inlet of the side circumferential piston (5) is connected to the lower air path (3) via the side circumferential piston air channel (6).

6. The expansion plate vertical lifting dual-air path slip differential shaft according to claim 5, characterized in that: The sheet expansion support portion further comprises a reset spring (17) connected to the radial sheet expansion piston (11).

7. The expansion plate vertical lifting dual-air path slip differential shaft according to claim 6, characterized in that: The sheet expansion seat (9) is provided with a bearing (12) inside.

8. The expansion plate vertical lifting dual-air path slip differential shaft according to claim 7, characterized in that: The sheet expansion seat (9) is provided with a receiving groove for receiving a radial sheet expansion piston (11), and the radial sheet expansion piston (11) is fixedly installed in the receiving groove.

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