Low-temperature-resistant gas rod

Abstract

The utility model provides a low-temperature resistant gas rod, which comprises an outer cylinder body, a telescopic cylinder and an inner cylinder body, the telescopic cylinder is arranged in the outer cylinder body in a sliding manner, the top of the telescopic cylinder penetrates through the outer cylinder body and extends outwards, the inner cylinder body is arranged in the telescopic cylinder, a driving piece used for driving the telescopic cylinder to slide in the outer cylinder body is arranged in the telescopic cylinder, and the inner cylinder body is arranged in the telescopic cylinder. A constant-temperature assembly is arranged between the outer cylinder body and the telescopic cylinder, filling layers are arranged at the bottom of the inner side of the outer cylinder body and the top of the inner side of the telescopic cylinder, and a rubber layer is arranged between the telescopic cylinder and the inner cylinder body. The utility model has the advantage of normal use at low temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of gas rod structures, in particular to a low-temperature resistant gas rod. Background Art

[0002] A gas rod is a mechanical device driven and controlled by gas pressure. As disclosed in the utility model patent with the publication number CN203435986U and the name of a low-temperature resistant gas rod, it includes an inner tube, an outer tube, a piston, a piston rod, and a compression ring. The inner tube is sleeved inside the outer tube, the compression ring is wrapped outside the piston rod and sleeved inside one end of the outer tube, and the piston is fixed at one end of the piston rod.

[0003] In a low-temperature environment, the seals inside this kind of gas rod will shrink with the ambient temperature, resulting in poor sealing inside the gas rod and making the gas rod unable to be used normally. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a low-temperature resistant gas rod to solve the technical problem in the background art that the existing gas rod is prone to abnormal use in a low-temperature environment.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions:

[0006] A low-temperature resistant gas rod includes an outer cylinder, a telescopic cylinder, and an inner cylinder. The telescopic cylinder is slidably arranged inside the outer cylinder. The top of the telescopic cylinder passes through the outer cylinder and extends outward. The inner cylinder is arranged inside the telescopic cylinder. A driving member for driving the telescopic cylinder to slide inside the outer cylinder is arranged inside the telescopic cylinder. A constant temperature component is arranged between the outer cylinder and the telescopic cylinder. Filling layers are arranged at the bottom inside the outer cylinder and the top inside the telescopic cylinder. A rubber layer is arranged between the telescopic cylinder and the inner cylinder.

[0007] As a preferred embodiment of the present application: The constant temperature component includes an insulating cylinder, an electric heating wire, and a temperature sensing controller. The insulating cylinder is arranged between the outer cylinder and the telescopic cylinder. The electric heating wire is arranged inside the insulating cylinder. The temperature sensing controller is arranged on the top of the outer cylinder, and the detection end of the temperature sensing controller extends into the insulating cylinder. The temperature sensing controller is electrically connected to the electric heating wire.

[0008] As a preferred embodiment of the present application: A flame retardant coating is arranged on the inner side wall of the insulating cylinder.

[0009] As a preferred embodiment of the present application: An adiabatic layer is arranged between the insulating cylinder and the outer cylinder. The adiabatic layer is made of mineral material.

[0010] As a preferred embodiment of the present application: The driving member includes a piston rod, a piston head, and a pressing valve core. One end of the piston rod is fixedly provided at the bottom inside the outer cylinder body. The top of the piston rod extends into the inner cylinder body in a sealed and sliding manner. The piston head is provided at the top of the piston rod. The piston head is in sealed and sliding contact with the inner side wall of the inner cylinder body. The pressing valve core is slidably provided at the top of the telescopic cylinder. The bottom of the pressing valve core is sealingly connected to the bottom of the inner cylinder body.

[0011] As a preferred embodiment of the present application: The filling layer is polyurethane foam.

[0012] Beneficial effects obtained:

[0013] By setting the driving member to cooperate with the pressure in the upper and lower spaces in the inner cylinder body, the telescopic cylinder moves up and down in the outer cylinder body. Through the constant temperature component in the outer cylinder body, the temperature of the telescopic cylinder and the inner cylinder body in the outer cylinder body can be effectively kept consistent, preventing the influence on the internal sealing effect in the low-temperature state. By setting the filling layer, the heat insulation effect of the outer cylinder body and the end parts of the telescopic cylinder outside the constant temperature component can be effectively increased. By setting the rubber layer, it has good heat resistance and anti-aging properties, can effectively seal the inside of the air rod, block the conduction of external heat or cold, and play a good role in heat insulation and heat preservation. Description of the drawings

[0014] Figure 1 It is a schematic cross-sectional view of the overall structure of the embodiment of the present invention;

[0015] Figure 2 For Figure 1 The enlarged schematic view of the structure at A of

[0016] Figure 3 For Figure 1 The enlarged schematic view of the structure at B of

[0017] In the above-mentioned drawings: 1. Outer cylinder body; 2. Telescopic cylinder; 3. Inner cylinder body; 4. Filling layer; 5. Rubber layer; 6. Insulating cylinder; 7. Electric heating wire; 8. Temperature sensing controller; 9. Flame retardant coating; 10. Heat insulation layer; 11. Piston rod; 12. Piston head; 13. Pressing valve core; 14. Rubber ring. Detailed implementation manners

[0018] The technical solutions in the present invention will be further described below in conjunction with the drawings and embodiments.

[0019] Embodiment:

[0020] Referring to Figures 1 to 3, this device is a low-temperature resistant gas rod, which includes an outer cylinder 1, a telescopic cylinder 2 and an inner cylinder 3. The telescopic cylinder 2 is slidably arranged inside the outer cylinder 1. The top of the telescopic cylinder 2 passes through the outer cylinder 1 and extends outward. The inner cylinder 3 is arranged inside the telescopic cylinder 2. A driving member for driving the telescopic cylinder 2 to slide inside the outer cylinder 1 is provided inside the telescopic cylinder 2. The driving member includes a piston rod 11, a piston head 12 and a pressing valve core 13. One end of the piston rod 11 is fixedly arranged at the inner bottom of the outer cylinder 1. The top of the piston rod 11 seals and slides into the inner cylinder 3. The piston head 12 is arranged at the top end of the piston rod 11. The piston head 12 seals and slidably abuts against the inner side wall of the inner cylinder 3. Two rubber rings 14 for sealing and slidably abutting against the inner wall of the inner cylinder 3 are provided on the piston head 12. The pressing valve core 13 is slidably arranged at the top of the telescopic cylinder 2. The bottom of the pressing valve core 13 is hermetically connected to the bottom of the inner cylinder 3. A through groove for allowing gas to move up and down the piston head 12 should be provided on the side wall of the inner cylinder 3. The driving structure of this gas rod is common prior art used in this field, and will not be elaborated too much in this application.

[0021] As Figure 1 and Figure 2 shown, a constant temperature component is provided between the outer cylinder 1 and the telescopic cylinder 2. The constant temperature component includes an insulating cylinder 6 made of ceramic insulating material, an electric heating wire 7 and a temperature sensor controller 8. The insulating cylinder 6 is arranged between the outer cylinder 1 and the telescopic cylinder 2. The electric heating wire 7 is arranged inside the insulating cylinder 6. The temperature sensor controller 8 is arranged on the top of the outer cylinder 1, and the detection end of the temperature sensor controller 8 extends into the insulating cylinder 6. The temperature sensor controller 8 is electrically connected to the electric heating wire 7. A flame retardant coating 9 is provided on the inner side wall of the insulating cylinder 6. An adiabatic layer 10 is provided between the insulating cylinder 6 and the outer cylinder 1. The adiabatic layer 10 is made of mineral material.

[0022] As Figure 1 and Figure 3 shown, filling layers 4 are provided at both the inner bottom of the outer cylinder 1 and the inner top of the telescopic cylinder 2. The filling layers 4 are polyurethane foams. A rubber layer 5 is provided between the telescopic cylinder 2 and the inner cylinder 3. Both the rubber layer 5 and the rubber rings 14 are ethylene propylene rubbers. This kind of rubber has good heat resistance and cold resistance, and low manufacturing cost.

[0023] Working principle:

[0024] This device is a low-temperature resistant gas rod, which is mainly used to be installed on objects that need to be lifted, so that the objects can be lifted. When used in a low-temperature environment, the electric heating wire 7 is heated inside the insulating cylinder 6 according to the temperature sensor controller 8, which is realized by connecting a power cord or placing a connecting battery. The temperature inside the outer cylinder 1 is maintained at a set threshold through the temperature sensor controller 8, so that the gas rod can be effectively used in a low-temperature environment and the sealing effect of the internal seals can be protected.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A low temperature resistant gas rod, characterized in that: The invention comprises an outer cylinder (1), a telescopic cylinder (2) and an inner cylinder (3), wherein the telescopic cylinder (2) is slidably arranged in the outer cylinder (1), the top of the telescopic cylinder (2) passes through the outer cylinder (1) and extends outward, the inner cylinder (3) is arranged in the telescopic cylinder (2), a driving member for driving the telescopic cylinder (2) to slide in the outer cylinder (1) is arranged in the telescopic cylinder (2), a constant temperature component is arranged between the outer cylinder (1) and the telescopic cylinder (2), a filling layer (4) is arranged at the inner bottom of the outer cylinder (1) and the inner top of the telescopic cylinder (2), and a rubber layer (5) is arranged between the telescopic cylinder (2) and the inner cylinder (3).

2. A low temperature resistant gas rod according to claim 1, characterized in that: The constant temperature component comprises an insulating cylinder (6), an electric heating wire (7) and a temperature sensing controller (8); the insulating cylinder (6) is arranged between the outer cylinder (1) and the telescopic cylinder (2); the electric heating wire (7) is arranged in the insulating cylinder (6); the temperature sensing controller (8) is arranged at the top of the outer cylinder (1); and the detection end of the temperature sensing controller (8) extends into the insulating cylinder (6); the temperature sensing controller (8) is electrically connected to the electric heating wire (7).

3. A low temperature resistant gas rod according to claim 2, characterized in that: A flame retardant coating (9) is provided on the inner side wall of the insulating cylinder (6).

4. The low temperature resistant gas rod according to claim 2, characterized in that: A heat insulating layer (10) is provided between the insulating cylinder (6) and the outer cylinder body (1), and the heat insulating layer (10) is made of a mineral material.

5. The low temperature resistant gas rod according to claim 1, characterized in that: The driving member comprises a piston rod (11), a piston head (12) and a push valve core (13); one end of the piston rod (11) is fixedly arranged at the inner bottom of the outer cylinder (1); the top of the piston rod (11) is sealingly slidably extended into the inner cylinder (3); the piston head (12) is arranged at the top of the piston rod (11); the piston head (12) is in sealing and slidable contact with the inner wall of the inner cylinder (3); the push valve core (13) is slidably arranged at the top of the telescopic cylinder (2); and the bottom of the push valve core (13) is sealed and connected to the bottom of the inner cylinder (3).

6. The low temperature resistant gas rod according to claim 1, characterized in that: The filling layer (4) is polyurethane foam.

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