Anti-drag heat-proof gas spring

Abstract

The utility model discloses a resistance-reducing heat-proof gas spring, and relates to the technical field of gas springs. Comprising a cylinder barrel, a piston rod is arranged in the cylinder barrel, a piston sealing piece is fixedly connected to the outer wall of the piston rod, the outer wall of the piston sealing piece is sleeved with a guide sleeve, a plurality of balls are arranged on the guide sleeve, the outer walls of the balls are in rolling connection with the inner wall of the cylinder barrel, and a check ring is fixedly connected to the outer wall of the piston sealing piece. The outer wall of the check ring is in sliding connection with the inner wall of the cylinder barrel, and the front end of the cylinder barrel is fixedly connected with a dustproof cover. Under the pushing of gas, the piston rod slides relatively along the inner wall of the cylinder barrel, and the guide sleeve outside the piston sealing piece plays a certain guiding role through the balls, so that the sliding resistance between the piston sealing piece and the cylinder barrel is effectively reduced, the operation efficiency of the device is improved, and the energy loss is reduced; meanwhile, abrasion of the gas spring is reduced, and the gas spring has good heat insulation performance and is high in practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas spring technical field especially relates to a drag reduction heatproof type gas spring. BACKGROUND

[0002] As a kind of based on gas compression characteristic elastic element, with its nonlinear stiffness, smooth output and maintenance-free advantage, in the field such as automobile industry, aerospace, engineering machinery and furniture manufacturing, gas spring is widely used.Traditional gas spring is usually composed of cylinder, piston assembly and sealing structure, and its working principle relies on the compression-expansion process of high-pressure gas in closed cavity to realize energy storage and release.

[0003] The existing gas spring has large sliding resistance between the piston sealing element and cylinder in use, not only needs to consume a lot of energy, leads to the equipment operation efficiency is not high, and because of its large wear, and it is difficult to effectively insulate in high temperature environment, the service life of the whole equipment is poor.For this reason, a drag reduction heatproof type gas spring is proposed. UTILITARIAN CONTENT

[0004] The utility model aims at providing a drag reduction heatproof type gas spring, solve the technical problem proposed in background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a drag reduction heatproof type gas spring, including cylinder, the inside of cylinder is provided with piston rod, the outer wall of piston rod is fixedly connected with piston sealing element, the outer wall of piston sealing element is sleeved with guide sleeve, a plurality of ball bearings are provided on guide sleeve, the outer wall of ball bearing is rotatably connected with the inner wall of cylinder, the outer wall of piston sealing element is fixedly connected with baffle ring, the outer wall of baffle ring is slidably connected with the inner wall of cylinder, the front end of cylinder is fixedly connected with dust cover.

[0006] Preferably, the front end of the piston rod is provided with a mounting portion, the outer wall of the mounting portion is fixedly connected with a limiting cylinder, the inner wall of the limiting cylinder is fixedly connected with a connecting ring, the front end of the piston rod is threadedly connected with the inner wall of the connecting ring, and a buffer assembly is arranged between the connecting ring and the limiting cylinder.

[0007] Preferably, the buffer assembly comprises a limiting ring, a circular groove is formed in the limiting ring, a spring one is fixedly connected to the inner wall of the circular groove, a clamping block is fixedly connected to the end of the spring one away from the circular groove, a clamping hole is formed in the limiting cylinder, the clamping block is clamped with the clamping hole, a spring two is fixedly connected to the outer wall of the limiting ring, and a buffer ring is fixedly connected to the end of the spring two away from the limiting ring.

[0008] Preferably, the cylinder is symmetrically provided with a compression ring, the inner wall of the compression ring is threadedly connected with a fastening bolt, and the outer wall of the fastening bolt is threadedly connected with the inner wall of the cylinder.

[0009] Preferably, the outer portion of the cylinder is provided with heat insulation cotton.

[0010] Preferably, the front end of the cylinder is fixedly connected with a buffer pad.

[0011] Compared with the prior art, the drag-reducing and heat-proof gas spring has the following beneficial effects:

[0012] 1. The drag-reducing and heat-proof gas spring is used, under the pushing of gas, the piston rod slides along the inner wall of the cylinder, the guide sleeve outside the piston sealing piece plays a certain guiding role through the rolling balls, the sliding resistance between the piston sealing piece and the cylinder is effectively reduced, the operation efficiency of the equipment is improved, the energy loss is reduced, the self-wear of the gas spring is reduced, and the service life is prolonged.

[0013] 2. The drag-reducing and heat-proof gas spring effectively blocks external heat by the heat insulation cotton outside the cylinder, so that the gas spring can still maintain stable working performance in a high-temperature environment, the problems of changes in the elastic coefficient and damage to the sealing structure caused by excessively high temperature are avoided, and after being used for a certain period of time, the heat insulation cotton material can be removed and replaced in time by loosening the fastening bolt, so that the gas spring can fully insulate external heat and improve durability. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the utility model;

[0015] Figure 2 It is a heat insulation cotton structure schematic view of the utility model;

[0016] Figure 3 It is a cylinder cut structure schematic view of the utility model;

[0017] Figure 4 It is a limiting ring structure schematic view of the utility model;

[0018] Figure 5 It is a limiting cylinder structure schematic view of the utility model.

[0019] In the figure: 1, cylinder; 2, piston rod; 3, mounting portion; 4, limiting cylinder; 5, clamping hole; 6, connecting ring; 7, limiting ring; 8, circular groove; 9, spring I; 10, clamping block; 11, spring II; 12, buffer ring; 13, piston sealing element; 14, guide sleeve; 15, ball; 16, retaining ring; 17, dust cover; 18, compression ring; 19, buffer pad; 20, heat insulation cotton; 21, fastening bolt. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Embodiment one:

[0022] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a kind of drag-reducing heat-proof gas spring, including cylinder 1, the inside of cylinder 1 is provided with piston rod 2, the outer wall of piston rod 2 is fixedly connected with piston sealing element 13, the outer wall of piston sealing element 13 is sleeved with guide sleeve 14, a plurality of ball 15 are provided on guide sleeve 14, the outer wall of ball 15 is connected with the inner wall of cylinder 1 and is rolled, the outer wall of piston sealing element 13 is fixedly connected with retaining ring 16, the outer wall of retaining ring 16 is connected with the inner wall of cylinder 1 and is slid, the front end of cylinder 1 is fixedly connected with dust cover 17;

[0023] In the embodiment, under the push of gas, piston rod 2 slides along the inner wall of cylinder 1 and gradually separates from cylinder 1, at this time, guide sleeve 14 outside piston sealing element 13 plays a certain guiding role through ball 15, effectively reduces the sliding resistance between piston sealing element 13 and cylinder 1, improves the operation efficiency of equipment, reduces energy loss, reduces the wear of gas spring itself, prolongs service life, and at the same time of moving, retaining ring 16 plays a sealing role for piston sealing element 13, to prevent gas from leaking from the side wall of piston sealing element 13, and ensures the sealing effect of piston sealing element 13.

[0024] The front end of piston rod 2 is provided with mounting portion 3, the outer wall of mounting portion 3 is fixedly connected with limiting cylinder 4, the inner wall of limiting cylinder 4 is fixedly connected with connecting ring 6, the front end of piston rod 2 is threadedly connected with the inner wall of connecting ring 6, and buffer assembly is arranged between connecting ring 6 and limiting cylinder 4.

[0025] The buffer assembly comprises a limiting ring 7, a circular groove 8 is formed in the limiting ring 7, a spring 1 9 is fixedly connected to the inner wall of the circular groove 8, a clamping block 10 is fixedly connected to the end of the spring 1 9 away from the circular groove 8, a clamping hole 5 is formed in the limiting cylinder 4, the clamping block 10 is clamped with the clamping hole 5, a spring 2 1 1 is fixedly connected to the outer wall of the limiting ring 7, and a buffer ring 1 2 is fixedly connected to the end of the spring 2 1 1 away from the limiting ring 7.

[0026] In the embodiment, when the gas spring is closed, the piston rod 2 is gradually retracted into the cylinder 1, the buffer ring 12 and the spring 2 1 1 and the telescopic column inside the spring 2 1 1 are used to limit and buffer, the end of the piston rod 2 is effectively prevented from colliding with the inner wall of the cylinder 1, and the piston sealing element 13 and other parts are protected, and the durability of the equipment is improved.

[0027] Example two:

[0028] Please refer to Figures 1-3 On the basis of example one, the utility model provides a technical scheme: the cylinder 1 is symmetrically provided with a compression ring 18, the inner wall of the compression ring 18 is screw connected with a fastening bolt 21, the outer wall of the fastening bolt 21 is screw connected with the inner wall of the cylinder 1, the outer part of the cylinder 1 is provided with heat insulation cotton 20, and the front end of the cylinder 1 is fixedly connected with a buffer pad 19.

[0029] In the embodiment, when in use, the heat insulation cotton 20 can be compressed on the outer part of the cylinder 1 by the compression ring 18, the heat insulation cotton 20 effectively blocks external heat, so that the gas spring can still maintain stable working performance in a high-temperature environment, and problems such as changes in elastic coefficient and damage to the sealing structure of the gas spring caused by excessively high surface temperature are avoided; after being used for a certain period of time, the fastening bolt 21 can be loosened, so that the heat insulation cotton 20 can be removed and replaced in time, the operation is simple, the gas spring can be fully insulated from external heat, and the durability is improved.

[0030] Working principle: when using, under the push of gas, the piston rod 2 is relatively slid along the inner wall of the cylinder 1, gradually separated from the cylinder 1, at this time, the guide sleeve 14 outside the piston sealing piece 13 plays a certain guiding role through the ball 15, effectively reduces the sliding resistance between the piston sealing piece 13 and the cylinder 1, improves the operation efficiency of the equipment, reduces the energy loss, at the same time, reduces the wear of the gas spring itself, prolongs the service life, and at the same time of moving, the piston sealing piece 13 is sealed by the blocking ring 16, thereby preventing the gas from leaking from the side wall of the piston sealing piece 13, ensuring the sealing effect of the piston sealing piece 13; the heat insulation cotton 20 can be pressed tightly outside the cylinder 1 by the pressing ring 18, the external heat is effectively blocked by the heat insulation cotton 20, so that the gas spring can still maintain stable working performance in high temperature environment, avoiding problems such as change of elastic coefficient and damage of sealing structure caused by too high surface temperature of the gas spring, after a certain period of use, the heat insulation cotton 20 material can be removed and replaced in time by unscrewing the fastening bolt 21, the operation is simple, the gas spring can fully insulate the external heat, and the durability is improved.

[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A drag-reducing heat-proof gas spring comprising a cylinder (1), characterized in that: The inside of the cylinder (1) is provided with a piston rod (2), the outer wall of the piston rod (2) is fixedly connected with a piston sealing element (13), the outer wall of the piston sealing element (13) is sleeved with a guide sleeve (14), a plurality of ball bearings (15) are arranged on the guide sleeve (14), the outer wall of the ball bearing (15) is in rolling connection with the inner wall of the cylinder (1), the outer wall of the piston sealing element (13) is fixedly connected with a check ring (16), the outer wall of the check ring (16) is in sliding connection with the inner wall of the cylinder (1), and the front end of the cylinder (1) is fixedly connected with a dust cover (17).

2. A drag-reducing thermal protection type gas spring according to claim 1, characterized in that: The front end of the piston rod (2) is provided with a mounting portion (3), the outer wall of the mounting portion (3) is fixedly connected with a limiting cylinder (4), the inner wall of the limiting cylinder (4) is fixedly connected with a connecting ring (6), the front end of the piston rod (2) is in threaded connection with the inner wall of the connecting ring (6), and a buffer assembly is arranged between the connecting ring (6) and the limiting cylinder (4).

3. A drag-reducing thermal protection type gas spring according to claim 2, characterized in that: The buffer assembly comprises a limiting ring (7), a circular groove (8) is formed in the limiting ring (7), the inner wall of the circular groove (8) is fixedly connected with a spring (9), one end of the spring (9) away from the circular groove (8) is fixedly connected with a clamping block (10), a clamping hole (5) is formed in the limiting cylinder (4), the clamping block (10) is clamped with the clamping hole (5), the outer wall of the limiting ring (7) is fixedly connected with a spring (11), and one end of the spring (11) away from the limiting ring (7) is fixedly connected with a buffer ring (12).

4. The drag-reducing, heat-preventing gas spring according to claim 1, wherein: The cylinder (1) is provided with a compression ring (18) symmetrically, the inner wall of the compression ring (18) is in threaded connection with a fastening bolt (21), and the outer wall of the fastening bolt (21) is in threaded connection with the inner wall of the cylinder (1).

5. The drag-reducing, heat-preventing gas spring according to claim 1, wherein: The outer part of the cylinder (1) is provided with heat insulation cotton (20).

6. A drag-reducing, heat-protective gas spring according to claim 1, characterized in that: The front end of the cylinder (1) is fixedly connected with a buffer pad (19). The outer part of the cylinder (1) is provided with heat insulation cotton (20). The front end of the cylinder (1) is fixedly connected with a buffer pad (19).

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