Hydraulic jack for high-temperature environment operation

Abstract

The utility model discloses a hydraulic jack used for high-temperature environment operation. The hydraulic jack comprises a base, a hydraulic cylinder body is arranged on the base, an oil storage cavity is formed in the hydraulic cylinder body, a plunger rod is arranged in the oil storage cavity, an oil inlet and an oil discharge port are formed in the bottom of the oil storage cavity, and an oil discharge valve is arranged on the oil discharge port. The water cooling mechanism is installed in the side wall of the hydraulic cylinder body, the overall temperature of the hydraulic cylinder body rises in a high-temperature environment, cooling water is input into a water cooling loop pipeline, the cooling water circulates to take away heat on the surface of the hydraulic cylinder body, the temperature of the whole hydraulic cylinder body is lowered, and hydraulic oil in an oil storage cavity is always in a suitable working state; and the situation that the plunger rod is damaged due to boiling of hydraulic oil in the oil storage cavity due to over-high temperature is prevented.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic equipment technology, specifically a hydraulic jack for operation in high-temperature environments. Background Technology

[0002] Hydraulic jacks are mechanical devices that utilize Pascal's principle to lift heavy objects through a hydraulic system. They are simple in construction, lightweight, portable, and easy to move, and are widely used in industrial maintenance, construction, and vehicle lifting. Jacks typically need to operate in various environments. For example, in high-temperature environments such as drying workshops and fire rescue sites, the boiling point of oils is generally low. The external high temperature causes the hydraulic oil temperature inside the hydraulic cylinder to rise after heat conduction. Prolonged operation can lead to the hydraulic oil heating up and boiling, causing damage to the plunger rod and preventing lifting and pressure maintenance. Therefore, it is necessary to design a hydraulic jack that can operate in high-temperature environments to meet operational requirements. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a hydraulic jack for operation in high-temperature environments, so as to solve the problem of piston rod damage caused by excessive hydraulic oil temperature mentioned in the background art.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic jack for operation in high-temperature environments, comprising a base, a hydraulic cylinder body disposed on the base, an oil storage chamber being provided inside the hydraulic cylinder body, a plunger rod being disposed inside the oil storage chamber, an oil inlet and an oil outlet being provided at the bottom of the oil storage chamber, and an oil outlet being provided on the oil outlet;

[0007] A water-cooling mechanism is provided inside the side wall of the hydraulic cylinder. The water-cooling mechanism includes a cooling water inlet, a water-cooling circuit pipe, a cooling water outlet, and a cooling water quick-connect fitting. The water-cooling circuit pipe is spirally arranged inside the side wall of the hydraulic cylinder. The two ends of the water-cooling circuit pipe are connected to the cooling water inlet and the cooling water outlet. The cooling water inlet is located on the side wall of the hydraulic cylinder. A cooling water quick-connect fitting is connected to the outside of the cooling water inlet. The cooling water outlet is located on the side of the hydraulic cylinder side wall away from the cooling water inlet. A cooling water quick-connect fitting is also connected to the outside of the cooling water outlet.

[0008] As a preferred embodiment of this utility model, a hollow heat-insulating cavity is provided in the side wall of the hydraulic cylinder, and the hollow heat-insulating cavity is located inside the water-cooling mechanism.

[0009] As a preferred embodiment of this invention, a heat-insulating coating is provided on the outer wall of the hydraulic cylinder.

[0010] As a preferred embodiment of this invention, a handle is provided on the outer wall of the hydraulic cylinder body.

[0011] As a preferred embodiment of this utility model, a quick-change hydraulic connector A is provided outside the oil inlet, and a connector protective cap is fitted on the quick-change hydraulic connector A.

[0012] As a preferred embodiment of this utility model, a quick-change hydraulic connector B is provided outside the oil unloading port, and a connector protective cap is fitted on the quick-change hydraulic connector B.

[0013] As a preferred embodiment of this invention, the bottom of the base is provided with anti-slip serrations.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model uses a water-cooling mechanism installed inside the side wall of the hydraulic cylinder body. In a high-temperature environment, when the overall temperature of the hydraulic cylinder body rises, cooling water is introduced into the water-cooling circuit pipe through the cooling water inlet. The cooling water circulates and removes the heat from the surface of the hydraulic cylinder body, thereby reducing the temperature of the entire hydraulic cylinder body and preventing the hydraulic oil in the oil storage chamber from boiling and damaging the plunger rod due to excessive temperature.

[0016] 2. This utility model creates a hollow insulation cavity inside the side wall of the water-cooling mechanism. The hollow insulation cavity isolates the temperature of the inside and outside of the side wall, keeping the oil storage cavity at a low temperature and unaffected by the external temperature. At the same time, a heat-insulating coating is applied to the outer wall of the hydraulic cylinder to improve the heat insulation effect, ensuring that the hydraulic oil in the oil storage cavity is always in a suitable working state. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall planar structure of this utility model;

[0018] Figure 2 This is an enlarged planar structural diagram of the water-cooling mechanism of this utility model;

[0019] Figure 3 This is an enlarged structural diagram of the base of this utility model.

[0020] In the diagram: 1. Base; 2. Hydraulic cylinder body; 3. Oil reservoir; 4. Piston rod; 5. Oil inlet; 6. Oil outlet; 7. Oil discharge valve; 8. Water cooling mechanism; 801. Cooling water inlet; 802. Water cooling circuit pipe; 803. Cooling water outlet; 804. Cooling water quick-change connector; 9. Hollow insulation cavity; 10. Heat insulation coating; 11. Handle; 12. Quick-change hydraulic connector A; 13. Quick-change hydraulic connector B; 14. Connector protective cap; 15. Anti-slip serrations. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 3 As shown, this utility model provides a hydraulic jack for operation in high-temperature environments, including a base 1, a hydraulic cylinder 2 on the base 1, an oil storage chamber 3 inside the hydraulic cylinder 2, a plunger rod 4 inside the oil storage chamber 3, an oil inlet 5 and an oil outlet 6 at the bottom of the oil storage chamber 3, and an oil outlet 7 on the oil outlet 6.

[0023] refer to Figure 1-2 A water-cooling mechanism 8 is provided inside the side wall of the hydraulic cylinder body 2. The water-cooling mechanism 8 includes a cooling water inlet 801, a water-cooling circuit pipe 802, a cooling water outlet 803, and a cooling water quick-connect fitting 804. The water-cooling circuit pipe 802 is spirally arranged inside the side wall of the hydraulic cylinder body 2. The two ends of the water-cooling circuit pipe 802 are connected to the cooling water inlet 801 and the cooling water outlet 803. The cooling water inlet 801 is located on the side wall of the hydraulic cylinder body 2. The cooling water quick-connect fitting 804 is connected to the outside of the cooling water inlet 801. The cooling water outlet 803 is located on the side of the side wall of the hydraulic cylinder body 2 away from the cooling water inlet 801. The cooling water quick-connect fitting 804 is connected to the outside of the cooling water outlet 803.

[0024] By installing a water-cooling mechanism 8 inside the side wall of the hydraulic cylinder 2, when the overall temperature of the hydraulic cylinder 2 rises in a high-temperature environment, cooling water is introduced into the water-cooling circuit pipe 802 through the cooling water inlet 801. The cooling water circulates and removes the heat from the surface of the hydraulic cylinder 2, thereby reducing the temperature of the entire hydraulic cylinder 2 and preventing the hydraulic oil in the oil reservoir 3 from boiling and damaging the plunger rod 4 due to excessive temperature.

[0025] refer to Figure 1-2 A hollow heat-insulating cavity 9 is provided inside the side wall of the hydraulic cylinder body 2. The hollow heat-insulating cavity 9 is located inside the water-cooling mechanism 8. A heat-insulating coating 10 is provided on the outer wall of the hydraulic cylinder body 2.

[0026] By opening a hollow insulation cavity 9 in the inner side wall of the water-cooling mechanism 8, the hollow insulation cavity 9 isolates the temperature on the inside and outside of the side wall, keeping the oil storage cavity 3 at a low temperature and unaffected by the external temperature. At the same time, a heat insulation coating 10 is applied to the outer wall of the hydraulic cylinder body 2 to improve the heat insulation effect, so that the hydraulic oil in the oil storage cavity 3 is always in a suitable working state.

[0027] How to use

[0028] The working principle and usage process of this utility model are as follows: The hydraulic oil tank and the cooling water tank are connected to the oil inlet 5, the oil outlet 6, the cooling water inlet 801, and the cooling water outlet 803, respectively. The hydraulic oil enters the oil storage chamber 3 from the oil inlet 5, pushing the plunger rod 4 to rise and lift the load. At the same time, the cooling water enters the water cooling circuit pipe 802 from the cooling water inlet 801 to exchange heat with the hydraulic cylinder 2, and then flows back to the cooling water tank from the cooling water outlet 803 to cool the hydraulic oil in the oil storage chamber 3, preventing the hydraulic oil from boiling and damaging the plunger rod 4 due to excessive temperature. After the work is completed, the oil outlet valve 7 is opened, and the hydraulic oil is discharged from the oil outlet 6. Under the action of gravity, the plunger rod 4 descends and resets.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic jack for use in high temperature environments, comprising a base (1), characterised in that: The base (1) is provided with a hydraulic cylinder body (2), the hydraulic cylinder body (2) is provided with an oil storage cavity (3), the oil storage cavity (3) is provided with a plunger rod (4), the oil storage cavity (3) is provided with an oil inlet (5) and an oil outlet (6), and the oil outlet (6) is provided with an oil outlet valve (7). The side wall of the hydraulic cylinder body (2) is provided with a water cooling mechanism (8), the water cooling mechanism (8) comprises an inlet cooling water port (801), a water cooling loop pipeline (802), an outlet cooling water port (803) and a cooling water quick connector (804), the water cooling loop pipeline (802) is spirally arranged in the side wall of the hydraulic cylinder body (2), the water cooling loop pipeline (802) is connected with the inlet cooling water port (801) and the outlet cooling water port (803) at both ends, the inlet cooling water port (801) is arranged on the side wall of the hydraulic cylinder body (2), the cooling water quick connector (804) is connected to the outside of the inlet cooling water port (801), the outlet cooling water port (803) is arranged on the side of the side wall of the hydraulic cylinder body (2) away from the inlet cooling water port (801), and the cooling water quick connector (804) is connected to the outside of the outlet cooling water port (803).

2. The hydraulic jack for use in high temperature environment according to claim 1, wherein: The side wall of the hydraulic cylinder body (2) is provided with a hollow heat preservation cavity (9), and the hollow heat preservation cavity (9) is arranged inside the water cooling mechanism (8).

3. The hydraulic jack for use in high temperature environment according to claim 1, wherein: The outer wall of the hydraulic cylinder body (2) is provided with a heat insulation coating (10).

4. The hydraulic jack for use in high temperature environment according to claim 1, wherein: The outer wall of the hydraulic cylinder body (2) is provided with a handle (11).

5. The hydraulic jack for use in high temperature environment according to claim 1, wherein: The oil inlet (5) is provided with a quick hydraulic connector A (12), and the quick hydraulic connector A (12) is provided with a connector protection cap (14).

6. The hydraulic jack for use in high temperature environments of claim 1, wherein: The oil outlet (6) is provided with a quick hydraulic connector B (13), and the quick hydraulic connector B (13) is provided with a connector protection cap (14).

7. The hydraulic jack for use in high temperature environments of claim 1, wherein: The bottom of the base (1) is provided with anti-skid sawtooth (15).

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