Aluminum alloy air pocket for frame-type strander

Abstract

The utility model provides an aluminum alloy air pocket for a frame strander, which comprises a shaft sleeve and an air cavity sleeved in the middle of the surface of the shaft sleeve, a first sealing end cover and a second sealing end cover are respectively distributed on two sides of the air cavity, the first sealing end cover and the second sealing end cover are both sleeved on the shaft sleeve for assembly, and sealing grooves are formed in two sides of the air cavity. A sealing structure is arranged in the sealing groove and used for relative sealing between the air cavity and the first sealing end cover and between the air cavity and the second sealing end cover. The sealing structure comprises a sealing ring arranged on the shaft sleeve in a sleeving mode and arranged in the sealing groove and a sealing ring arranged on the surface of the sealing ring in a sleeving mode. According to the sealing structure, the sealing ring, the first side face sealing ring and the second side face sealing ring commonly act in the sealing groove to form the abutting sealing of the air cavity and the first sealing end cover and the second sealing end cover on the two sides.

Description

Technical Field

[0001] The utility model relates to the field of stranding machines, and more particularly to an aluminum alloy air bag for a stranding machine. Background Art

[0002] A stranding machine is a device used for stranding large-length and large-cross-sectional area aluminum / aluminum alloy wires, bare copper wires, aluminum conductor steel-reinforced wires, sector conductors, and cross-linked compacted cable cores. It is applicable to the stranding of large-length and large-cross-sectional area aluminum / aluminum alloy wires, bare copper wires, aluminum conductor steel-reinforced wires, sector conductors, and cross-linked compacted cable cores. At the outlet position of the stranding machine, in order to improve the joint quality and operation stability between conductors, a rotating air bag that moves in unison with the main shaft of the stranding machine is required to perform airtight protection treatment on the conductors.

[0003] However, it is found in actual use that the currently used rotating air bags often adopt traditional sealing and connecting structures, that is, a sealing structure formed by a single sealing ring. Due to the influence of different working conditions, this kind of sealing structure is prone to poor sealing effect. Therefore, we make improvements and propose an aluminum alloy air bag for a stranding machine. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an aluminum alloy air bag for a stranding machine, which solves the problem that the existing aluminum alloy air bag for a stranding machine cannot promote the sealing of the sealing structure according to the actual working conditions during use.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] An aluminum alloy air bag for a stranding machine includes a shaft sleeve and an air cavity sleeved on the middle part of the surface of the shaft sleeve. On both sides of the air cavity, a first sealing end cover and a second sealing end cover are respectively distributed. The first sealing end cover and the second sealing end cover are both sleeved on the shaft sleeve for assembly. Sealing grooves are formed on both sides of the air cavity, and a sealing structure is arranged in the sealing grooves for relative sealing between the air cavity and the first sealing end cover and the second sealing end cover;

[0007] The sealing structure includes a sealing ring sleeved on the shaft sleeve and placed in the sealing groove and a sealing ring sleeved on the surface of the sealing ring;

[0008] Among them, a positioning ring is further arranged inside the sealing ring for sleeving on the shaft sleeve for connection and positioning. A corrugated sealing sleeve is jointly and sealingly connected between the positioning ring and the sealing ring. In the natural state, the corrugated sealing sleeve acts on the sealing ring to make the sealing ring tightly press against the top wall of the air cavity to form a seal.

[0009] As a preferred technical solution of the present application, a pressurizing chamber is provided inside the positioning ring. The pressurizing chamber and the corrugated sealing sleeve are communicated through a connecting pipe, and a check valve is provided inside the connecting pipe, so that the air in the pressurizing chamber can only be unidirectionally input into the corrugated sealing sleeve.

[0010] As a preferred technical solution of the present application, a first pressurizing piston ring and a second pressurizing piston ring are respectively and slidably provided on both sides inside the pressurizing chamber;

[0011] Wherein, one side of the first pressurizing piston ring is provided with a plurality of support rods one distributed at equal intervals. The plurality of support rods one all extend outside the pressurizing chamber and are commonly connected to a first side sealing ring.

[0012] As a preferred technical solution of the present application, a plurality of support rods two are provided on one side of the second pressurizing piston ring at equal intervals. The plurality of support rods two all extend outside the pressurizing chamber and are commonly connected to a second side sealing ring.

[0013] As a preferred technical solution of the present application, one side of the second sealing ring is movably connected to an adjusting screw rod, and the adjusting screw rod penetrates through a second sealing end cover on one side and extends to the outside. An adjusting screw barrel is fixed at the position corresponding to the adjusting screw rod on the second sealing end cover, and the adjusting screw rod is threadedly assembled with the adjusting screw barrel.

[0014] As a preferred technical solution of the present application, an air inlet hole and an air outlet hole are connected to the shaft sleeve, and the plurality of air inlet holes and air outlet holes are evenly distributed around the axis of the shaft sleeve.

[0015] As a preferred technical solution of the present application, an air inlet and an air outlet are provided on the air chamber. The air inlet is connected to the air inlet hole on the shaft sleeve, the air outlet is connected to the air outlet hole on the shaft sleeve, and a pressure relief control valve is provided at the air outlet.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] In the solution of the present application:

[0018] Through the provided sealing structure, it realizes the contact sealing between the air chamber and the two sealing end covers one and two on both sides by the combined action of the sealing ring, the first side sealing ring and the second side sealing ring in the sealing groove. At the same time, according to the usage conditions in different environments, by rotating the adjusting screw rod to make it contact the second side sealing ring, the pressure in the pressurizing chamber is increased and transmitted to the corrugated sealing sleeve. Through the increase of the pressure of the corrugated sealing sleeve, the contact sealing between the sealing ring and the sealing groove is further promoted, effectively improving its sealing effect;

[0019] Meanwhile, in conjunction with the provision of the side seal ring 1, when gas leakage occurs between the gas cavity and the first sealing end cover and the second sealing end cover, the side seal ring 1 under pressure can also increase the pressure in the pressurizing cavity, causing the sealing ring to further press tightly against the sealing groove to form a stable sealing state. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic structural diagram of an aluminum alloy air bag for a frame stranding machine provided by the present application;

[0021] Figure 2 is Figure 1 an enlarged structural diagram at position A in FIG.

[0022] Figure 3 FIG. is a schematic structural diagram of a sealing structure of an aluminum alloy air bag for a frame stranding machine provided by the present application;

[0023] Figure 4 FIG. is a schematic sectional structural diagram of a sealing structure of an aluminum alloy air bag for a frame stranding machine provided by the present application;

[0024] Figure 5 is Figure 2 an enlarged structural diagram at position B in FIG.

[0025] Reference numerals in the figures: 1, bushing; 2, gas cavity; 3, first sealing end cover; 4, second sealing end cover; 5, sealing structure; 6, pressure relief control valve;

[0026] 11, air inlet hole; 12, air outlet hole;

[0027] 21, sealing groove; 22, air inlet; 23, air outlet;

[0028] 51, sealing ring; 52, sealing gasket; 53, positioning ring; 54, corrugated sealing sleeve;

[0029] 530, pressurizing cavity; 531, connecting pipe; 532, one-way valve; 533, first pressurizing piston ring; 534, second pressurizing piston ring; 535, first support rod; 536, first side seal ring; 537, second support rod; 538, second side seal ring; 539, adjusting screw rod; 540, adjusting screw barrel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0031] As Figures 1-5As shown in the figure, an aluminum alloy air bag for a bunching machine includes a bushing 1 and an air chamber 2 sleeved on the middle part of the surface of the bushing 1. On both sides of the air chamber 2, a first sealing end cover 3 and a second sealing end cover 4 are respectively distributed. Both the first sealing end cover 3 and the second sealing end cover 4 are sleeved on the bushing 1 for assembly. Sealing grooves 21 are formed on both sides of the air chamber 2. A sealing structure 5 is arranged in the sealing grooves 21 for relative sealing between the air chamber 2, the first sealing end cover 3 and the second sealing end cover 4. An air inlet hole 11 and an exhaust hole 12 are connected to the bushing 1. A plurality of air inlet holes 11 and exhaust holes 12 are evenly distributed around the axis of the bushing 1. An air inlet 22 and an exhaust port 23 are arranged on the air chamber 2. The air inlet 22 is connected to the air inlet hole 11 on the bushing 1, and the exhaust port 23 is connected to the exhaust hole 12 on the bushing 1. A pressure relief control valve 6 is arranged at the exhaust port 23.

[0032] The sealing structure 5 includes a sealing ring 51 sleeved on the bushing 1 and placed in the sealing groove 21, and a sealing ring 52 sleeved on the surface of the sealing ring 51. Among them, a positioning ring 53 is further arranged inside the sealing ring 51 for sleeving on the bushing 1 for connection and positioning. A corrugated sealing sleeve 54 is hermetically connected between the positioning ring 53 and the sealing ring 51. In the natural state, the corrugated sealing sleeve 54 will act on the sealing ring 51 to make the sealing ring 52 press tightly against the top wall of the air chamber 2 to form a seal.

[0033] A pressure increasing chamber 530 is arranged inside the positioning ring 53. The pressure increasing chamber 530 is communicated with the corrugated sealing sleeve 54 through a connecting pipe 531, and a one-way valve 532 is arranged in the connecting pipe 531, so that the air in the pressure increasing chamber 530 can only be input into the corrugated sealing sleeve 54 unidirectionally.

[0034] In the natural state of the internal pressure of the pressure increasing chamber 530, the corrugated sealing sleeve 54 communicated with it and the sealing ring 52 thereon are in a state of pressing tightly inside the sealing groove 21, so as to form a sealing effect between the air chamber 2, the first sealing end cover 3 and the second sealing end cover 5.

[0035] A first pressure increasing piston ring 533 and a second pressure increasing piston ring 534 are respectively arranged on both sides inside the pressure increasing chamber 530 in a sliding manner. Among them, a plurality of support rods 535 are arranged on one side of the first pressure increasing piston ring 533 at equal intervals. The plurality of support rods 535 all extend outside the pressure increasing chamber 530 and are jointly connected with a first side sealing ring 536.

[0036] A plurality of support rods 537 are arranged on one side of the second pressure increasing piston ring 534 at equal intervals. The plurality of support rods 537 all extend outside the pressure increasing chamber 530 and are jointly connected with a second side sealing ring 538.

[0037] One side of the second sealing ring 538 is movably connected with an adjusting screw rod 539, and the adjusting screw rod 539 penetrates through the second sealing end cover 4 on one side and extends to the outside. An adjusting screw barrel 540 is fixed at the position corresponding to the adjusting screw rod 539 on the second sealing end cover 4, and the adjusting screw rod 539 is threadedly assembled with the adjusting screw barrel 540.

[0038] The above-mentioned first side sealing ring 536 and second side sealing ring 538 are both in a state of abutting against the sealing groove 21. Therefore, they can jointly form a sealing effect with the sealing ring 52 in the sealing groove 21, thus ensuring the sealing effect between the air cavity 21 and the first sealing end cover 3 and the second sealing end cover 4.

[0039] During the actual application process of the stranding machine, the sealing of the sealing structure 5 can be adjusted adaptively according to the actual situation of the aluminum alloy air bag. For example, when the sealing effect of the sealing structure 5 decreases, the adjusting screw rod 539 can be rotated to form a threaded fit with the adjusting screw barrel 540, so that the adjusting screw rod 539 and the adjusting screw barrel 540 form relative sliding. During the sliding process, the adjusting screw rod 539 will drive the second side sealing ring 538 and the second booster piston ring 534 thereon to move synchronously, thereby increasing the pressure in the booster cavity 530. The booster cavity 530 under the action of the increased pressure will transfer part of the pressure to the corrugated sealing sleeve 54 inside. The corrugated sealing sleeve 54 under the boosting action will further expand, making the sealing ring 52 thereon further form an effective abutting seal with the sealing groove 21, and the second booster piston ring 534 on the other side can play a role in pressure balance.

[0040] That is, when the pressure in the corrugated sealing sleeve 54 is sufficient, the first booster piston ring 533 can slide and avoid in the booster cavity 530 to relieve part of the pressure, so that the corrugated sealing sleeve 54 is in a balanced state. At the same time, with the setting of the first side sealing ring 536, when gas leakage occurs between the air cavity 2 and the first sealing end cover 3 and the second sealing end cover 4, the first side sealing ring 536 under the action of pressure can also increase the pressure on the booster cavity 530, making the sealing ring 52 further press tightly in the sealing groove 21 to form a stable sealing state.

[0041] The above embodiments are only used to illustrate the present invention rather than to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above-mentioned various embodiments, the present invention is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. An aluminum alloy air bag for a frame stranding machine, comprising a shaft sleeve (1) and an air cavity (2) sleeved on the middle part of the surface of the shaft sleeve (1), a sealing end cover (3) and a sealing end cover (4) are respectively arranged on both sides of the air cavity (2), and the sealing end cover (3) and the sealing end cover (4) are both sleeved on the shaft sleeve (1) for assembly, characterized in that: Sealing grooves (21) are formed on both sides of the air cavity (2), and sealing structures (5) are arranged in the sealing grooves (21) for relative sealing between the air cavity (2) and the sealing end cover 1 (3) and the sealing end cover 2 (4); The sealing structure (5) comprises a sealing ring (51) sleeved on the shaft sleeve (1) and inserted into the sealing groove (21), and a sealing ring (52) sleeved on the surface of the sealing ring (51); A positioning ring (53) is further provided on the inner side of the sealing ring (51) for being sleeved on the shaft sleeve (1) for connection and positioning; a corrugated sealing sleeve (54) is located between the positioning ring (53) and the sealing ring (51) and is jointly sealed and connected; the corrugated sealing sleeve (54) acts on the sealing ring (51) in a natural state so that the sealing ring (52) is pressed against the top wall of the air cavity (2) to form a seal.

2. The aluminum alloy air bag for a frame stranding machine according to claim 1, characterized in that: A pressurizing chamber (530) is provided in the positioning ring (53), the pressurizing chamber (530) and the corrugated sealing sleeve (54) are connected via a connecting pipe (531), and a one-way valve (532) is provided in the connecting pipe (531), so that the air in the pressurizing chamber (530) can only be input into the corrugated sealing sleeve (54) in one direction.

3. The aluminum alloy air bag for a frame stranding machine according to claim 2, characterized in that: A first boosting piston ring (533) and a second boosting piston ring (534) are slidably disposed on both sides of the boosting chamber (530); Among them, a plurality of support rods 1 (535) distributed at equal intervals are provided on one side of the boost piston ring 1 (533), and the plurality of support rods 1 (535) all extend outside the boost chamber (530) and are commonly connected to a side sealing ring 1 (536).

4. The aluminum alloy air bag for a frame stranding machine according to claim 3, characterized in that: A plurality of equally spaced support rods (537) are provided on one side of the boost piston ring (534); the plurality of support rods (537) extend outside the boost chamber (530) and are commonly connected to a side sealing ring (538).

5. The aluminum alloy air bag for a frame stranding machine according to claim 4, characterized in that: An adjusting screw rod (539) is movably connected to one side of the second sealing ring (538), and the adjusting screw rod (539) passes through the second sealing end cover (4) on one side and extends to the outside. An adjusting screw barrel (540) is fixed at a position on the second sealing end cover (4) corresponding to the adjusting screw rod (539), and the adjusting screw rod (539) and the adjusting screw barrel (540) are threadedly assembled.

6. The aluminum alloy air bag for a frame stranding machine according to claim 1, characterized in that: The shaft sleeve (1) is connected to an air inlet hole (11) and an air outlet hole (12), and a plurality of the air inlet holes (11) and the air outlet holes (12) are evenly distributed around the axis of the shaft sleeve (1).

7. The aluminum alloy air bag for a frame stranding machine according to claim 6, characterized in that: The air cavity (2) is provided with an air inlet (22) and an air outlet (23); the air inlet (22) is connected to the air inlet hole (11) on the shaft sleeve (1); the air outlet (23) is connected to the air outlet hole (12) on the shaft sleeve (1); and a pressure relief control valve (6) is provided at the air outlet (23).

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