Air tightness test tool for hydraulic damper

Abstract

The utility model belongs to the technical field of detection equipment, and particularly relates to an air tightness test tool for a hydraulic damper. The device comprises a protective housing, wherein the protective housing comprises a housing and a housing cover; the inflation and deflation assembly is arranged at the top of the shell, the inflation and deflation assembly comprises an air pipe, the tail end of the air pipe is located in the shell, the tail end of the air pipe is a horn mouth, the horn mouth is further sleeved with a nut, and the air pipe is made of a metal material; and one end of each reducer union is matched with the nut and the horn mouth, and the other end of each reducer union is matched with a connector of the hydraulic damper. The utility model is used for solving the technical problems that the existing air tightness test air pipe has potential safety hazards in a high-pressure environment and the test air pipe does not have universality.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection equipment, and in particular relates to an air tightness testing tool for a hydraulic damper. Background Art

[0002] Prior art includes a utility model patent with publication number CN219827567U, which proposes a hydraulic damper. To adapt to radiation environments, this damper uses water, liquid metal, or hydraulic oil instead of viscous grease as the damping medium. Due to the demanding operating environment, the hydraulic damper also requires high airtightness, necessitating an airtightness test before injecting the damping medium.

[0003] General air tightness testing can be divided into two testing methods, positive pressure testing and negative pressure testing. Positive pressure testing is to inject a pressure value higher than the standard atmospheric pressure into the airtight cavity, and negative pressure testing is to extract the air in the airtight cavity and reduce the internal pressure to below the standard atmospheric pressure. Both are to detect whether there is any change in the pressure value inside the airtight cavity after maintaining it for a period of time. No change indicates good airtightness.

[0004] Since the hydraulic damper is used in a harsh environment and the internal pressure is maintained for a long time, a positive pressure test is adopted, and the pressure value is maintained above 2~5Mpa. In some cases, the pressure value is higher.

[0005] However, at least two problems have been found in the current air tightness test process: 1. The pressure value is too high, and the pipe used to test the air tightness has a short life and is easily damaged. When the pipe is damaged, it will burst, posing a safety hazard; 2. The hydraulic damper itself has multiple specifications, and its own adjustment screw will also change size with the specifications, so that the conventional pipe joints connecting the hydraulic damper also have multiple specifications. In general, the air pipe and the pipe joint are crimped together, which results in multiple specifications of pipe joints corresponding to multiple specifications of air pipes, and multiple specifications of air pipes are not universal with tools such as pressure gauges and air pumps. Utility Model Content

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the existing technology and provide a hydraulic damper air tightness test tool to solve the technical problems that the existing air tightness test air pipe has safety hazards in a high-pressure environment and the test air pipe is not universal.

[0007] The utility model solves the above technical problems with the following technical solutions: A hydraulic damper air tightness test tool, comprising:

[0008] A protective housing, comprising a housing and a cover;

[0009] An air charging and discharging assembly is provided on the top of the housing, and includes an air pipe. The tail end of the air pipe is located inside the housing, the tail end of the air pipe is a bell mouth, and a nut is further sleeved on the outside of the bell mouth. The air pipe is made of metal;

[0010] A plurality of reducers are provided, one end of each reducer is adapted to the nut and the bell mouth, and the other end of each reducer is adapted to the interface of the hydraulic damper.

[0011] The utility model places the hydraulic damper in a protective shell, then connects the air pipe, fastens the protective shell, and then injects high-pressure gas, and continuously maintains the pressure to observe whether there is leakage; during this process, the air pipe and the reducer are all in the protective shell, even if the air pipe bursts or the air pipe connection is thrown off, it will not cause damage to the operator, which greatly improves safety; in addition, by providing a detachable reducer, the size of the air pipe is made uniform, thereby improving the interchangeability of the test tooling.

[0012] Furthermore: the shell and the shell cover are both C-shaped structures, a slot is provided inside the shell, and the shell cover is inserted into the slot;

[0013] At least one through hole is further provided on the edge of the opening of the shell, and the through hole is used to fix the support column.

[0014] The beneficial effects of this step are as follows: the C-shaped shell and the shell cover can be connected by plugging, and the three surfaces of the C-shaped shell are open, which makes it easier to operate.

[0015] Furthermore: the inflation and deflation assembly further comprises an inflation nozzle and a pressure gauge, and the inflation nozzle and the pressure gauge are fixed on the top surface of the shell;

[0016] The air pipe includes a first head end and a second head end, the first head end is connected to the inflation nozzle, and the second head end is connected to the pressure gauge.

[0017] The beneficial effects of adopting this step are: the inflation nozzle is a port for injecting high-pressure gas, and the pressure gauge can observe the air pressure value in the trachea in real time.

[0018] Furthermore: the air pipe also includes a third head end, the third head end is provided with a switch valve, and the switch valve is also provided with a muffler.

[0019] The beneficial effects of adopting this step are as follows: since the valve core of the inflation nozzle is generally a push-open type, if the valve core is used for deflation, there are several disadvantages. First, the deflation speed is slow when pressing the valve core. Second, when the valve core is disassembled, there is a risk that the high-pressure gas will launch the valve core and injure the operator. Even if there is no injury, there is a risk of the valve core being shot away and lost. Third, there may be metal chips left over from processing in the hydraulic damper. Metal chips have great destructive power under the action of high-pressure gas. Therefore, a separate switch valve is connected in the side, which can effectively control the opening of the switch valve for rapid deflation, and the muffler on the switch valve can not only reduce the sound of the airflow, but also block the metal chips that may exist in the airflow, thereby playing a protective role.

[0020] Furthermore: a long slot is provided on the top of the shell, and a plurality of fixing holes are provided on both sides of the long slot;

[0021] The inflation and deflation assembly is arranged on the movable plate, the air pipe of the inflation and deflation assembly passes through the long slot hole, and the movable plate is connected to the fixing hole.

[0022] The beneficial effect of adopting this step is that by moving the position of the movable plate on the top of the shell, the position of the inflation and deflation components can be adjusted to accommodate hydraulic dampers of different specifications.

[0023] Furthermore: a shaped protective pad is also provided in the shell, and the shaped protective pad is used to place the hydraulic damper.

[0024] The beneficial effect of adopting this step is that the shaped protective pad can provide effective support and fixation for the liquid damper.

[0025] Furthermore: the shell cover is a transparent plastic plate.

[0026] The beneficial effect of adopting this step is that the transparent plastic plate makes it easy to find hidden dangers during the inflation process so that the hidden dangers can be eliminated in time.

[0027] The beneficial effects of the utility model are:

[0028] 1. This application combines the inflation and deflation components with the protective housing, allowing the air pipe and the hydraulic damper being tested to be stored in the protective housing. Even if the air pipe bursts or the pipe joint falls off, it will not cause danger to the operator, greatly improving the safety of the operator;

[0029] 2. By setting a reducer, a single size of air pipe can be used to ensure the universality of air pipes, pressure gauges, air nozzles and other components; different specifications of hydraulic dampers only need to replace reducers of different specifications to maintain normal connection of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a structural schematic diagram of a hydraulic damper air tightness test tool provided by the utility model without a shell cover;

[0032] Figure 2 for Figure 1 Right view;

[0033] Figure 3 This is a schematic structural diagram of a hydraulic damper air tightness test fixture provided by the utility model;

[0034] Figure 4 This is a structural schematic diagram of another embodiment of a hydraulic damper air tightness test tool provided by the utility model;

[0035] Figure 5 The utility model provides a structural schematic diagram of a hydraulic damper air tightness test tool containing a shaped protective pad.

[0036] Reference numerals:

[0037] 1-shell; 2-shell cover; 3-trachea; 4-reducing joint; 5-pressure gauge; 6-inflating nozzle; 7-on / off valve; 8-muffler; 9-fixed support column; 10-movable plate; 11-shaped protective pad; 12-hydraulic damper;

[0038] 31-nut; 32-flare;

[0039] 101-slot. DETAILED DESCRIPTION

[0040] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0041] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of this utility model, "plurality" means more than two, unless otherwise specifically defined.

[0044] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0045] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0046] Example

[0047] like Figure 1 、 Figure 2 and Figure 3 As shown, the utility model provides a hydraulic damper air tightness test tool, comprising:

[0048] A protective housing, comprising a housing 1 and a housing cover 2;

[0049] The inflation and deflation assembly is arranged on the top of the housing 1 and includes an air pipe 3. The tail end of the air pipe 3 is located in the housing 1. The tail end of the air pipe 1 is a bell mouth 32. A nut 31 is also sleeved on the outside of the bell mouth 32. The air pipe is made of metal, preferably a copper tube or an aluminum tube, which has high strength, is not easy to burst, has good plasticity, and has strong sealing performance.

[0050] Several reducers 4 are provided, one end of each reducer 4 is adapted to the nut 31 and the bell mouth 32 , the bell mouth 32 is sealed with one end of the reducer 4 under the action of the nut 31 , and the other end of each reducer 4 is adapted to the interface of the hydraulic damper 12 .

[0051] The utility model places the hydraulic damper 12 in the protective shell, then connects the air pipe 3, fastens the protective shell, and then injects high-pressure gas, and continuously maintains the pressure to observe whether there is leakage; in this process, the air pipe 3 and the reducer 4 are all in the protective shell, even if the air pipe 3 bursts or the connection of the air pipe 3 is thrown off, it will not cause damage to the operator, which greatly improves safety; in addition, by providing a detachable reducer 4, the size of the air pipe 3 is made uniform, thereby improving the interchangeability of the test tooling.

[0052] On the basis of the above technical solution, the housing 1 and the housing cover 2 are both C-shaped structures, a slot 101 is provided inside the housing 1, and the housing cover 2 is inserted into the slot 101;

[0053] At least one through hole is further provided on the edge of the opening of the housing 1 , and the through hole is used to fix the support column 9 .

[0054] The C-shaped shell 1 and the shell cover 2 can be connected by plugging, and the three sides of the C-shaped shell 1 are open, which is easier to operate than a single-side open, door-type box. The fixed support column 9 has two functions: one is to support the shell 1, and the other is to limit the shell cover 2 inserted into the slot 101 to prevent it from falling out of the slot 101.

[0055] On the basis of the above technical solution, the inflation and deflation assembly further includes an inflation nozzle 6 and a pressure gauge 5, and the inflation nozzle 6 and the pressure gauge 5 are fixed on the top surface of the housing 1;

[0056] The air pipe 3 includes a first head end and a second head end, the first head end is connected to the inflation nozzle 6, and the second head end is connected to the pressure gauge 5.

[0057] The inflation nozzle 6 is a port for injecting high-pressure gas, and the pressure gauge 5 can observe the air pressure value in the trachea 3 in real time.

[0058] On the basis of the above technical solution, the air pipe 3 further includes a third head end, the third head end is provided with a switch valve 7, and the switch valve 7 is also provided with a muffler 8.

[0059] Since the valve core of the inflation nozzle 6 is generally a push-open type, if the valve core is used for deflation, there are several disadvantages. First, the deflation speed is slow by pressing the valve core. Second, when the valve core is disassembled, there is a risk that the high-pressure gas will launch the valve core and injure the operator. Even if there is no injury, there is a risk of the valve core being shot away and lost. Third, there may be metal chips left over from processing in the hydraulic damper 12. Metal chips have great destructive power under the action of high-pressure gas. Therefore, a separate switch valve 7 is connected in the side, which can effectively control the opening of the switch valve 7 for rapid deflation, and the muffler 8 on the switch valve 7 can not only reduce the sound of the airflow, but also block the metal chips that may exist in the airflow, thereby playing a protective role.

[0060] In addition, the first head end, the second head end and the third head end can be bypassed using two T-tubes or one four-way tube.

[0061] like Figure 4 As shown, a long slot is provided on the top of the housing 1, and a plurality of fixing holes are provided on both sides of the long slot;

[0062] The inflation and deflation assembly is arranged on the movable plate 10 , the air pipe 3 of the inflation and deflation assembly passes through the long slot hole, and the movable plate 10 is connected to the fixing hole.

[0063] By moving the position of the movable plate 10 on the top of the housing 1 , the position of the inflation and deflation assembly can be adjusted to accommodate hydraulic dampers 12 of different specifications.

[0064] like Figure 5 As shown, a shaped protective pad 11 is further provided in the housing 1 , and the shaped protective pad 11 is used to place a hydraulic damper 12 .

[0065] The materials of the shaped protective pad 11 are various, such as plastic, foam or cardboard, etc. The liquid damper 12 is partially embedded in the shaped protective pad 11, and the shaped protective pad 11 can provide effective support and fixation for the liquid damper 12.

[0066] On the basis of the above technical solution, the shell cover 2 is a transparent plastic plate.

[0067] The transparent plastic plate is easy to observe and can detect hidden dangers during the inflation process so that they can be eliminated in time.

[0068] 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 it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydraulic damper air tightness test tool, characterized in that: include: A protective housing, comprising a housing and a cover; An air charging and discharging assembly is provided on the top of the housing, and includes an air pipe. The tail end of the air pipe is located inside the housing, the tail end of the air pipe is a bell mouth, and a nut is further sleeved on the outside of the bell mouth. The air pipe is made of metal; A plurality of reducers are provided, one end of each reducer is adapted to the nut and the bell mouth, and the other end of each reducer is adapted to the interface of the hydraulic damper.

2. The hydraulic damper air tightness test tool according to claim 1, characterized in that: The shell and the shell cover are both C-shaped structures, and a slot is provided inside the shell, and the shell cover is inserted into the slot; At least one through hole is further provided on the edge of the opening of the shell, and the through hole is used to fix the support column.

3. The hydraulic damper air tightness test tool according to claim 1, characterized in that: The inflation and deflation assembly further comprises an inflation nozzle and a pressure gauge, wherein the inflation nozzle and the pressure gauge are fixed to the top surface of the shell; The air pipe includes a first head end and a second head end, the first head end is connected to the inflation nozzle, and the second head end is connected to the pressure gauge.

4. The hydraulic damper air tightness test tool according to claim 3, characterized in that: The air pipe further comprises a third head end, the third head end is provided with a switch valve, and the switch valve is further provided with a muffler.

5. The hydraulic damper air tightness test tool according to claim 1 or 4, characterized in that: A long slot is provided on the top of the shell, and a plurality of fixing holes are provided on both sides of the long slot; The inflation and deflation assembly is arranged on the movable plate, the air pipe of the inflation and deflation assembly passes through the long slot hole, and the movable plate is connected to the fixing hole.

6. The hydraulic damper air tightness test tool according to claim 1, characterized in that: A shaped protective pad is also provided in the shell, and the shaped protective pad is used for placing the hydraulic damper.

7. The hydraulic damper air tightness test tool according to claim 1, characterized in that: The shell cover is a transparent plastic plate.

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