Manual leak hunting device for cylindrical shock absorber

Abstract

The utility model provides a manual leak hunting device for a cylindrical shock absorber, which comprises a working table, a plurality of first air guide holes are arranged on the vertical surface of one side of the working table, one side of each first air guide hole is connected with a breather pipe, one end of each breather pipe is connected to a multi-channel connecting assembly, an air inlet of the multi-channel connecting assembly is connected with an air guide pipe, and the other end of the multi-channel connecting assembly is connected with an air outlet of the multi-channel connecting assembly. A plurality of second air guide holes are formed in the upper portion of the workbench in the vertical direction in the reverse direction, the second air guide holes are communicated with the first air guide holes, an air leakage detection meter is arranged in each second air guide hole, a hose is connected to a connector of each air leakage detection meter, and the other end of each hose is connected into a detection hole of the oil storage cylinder. The oil storage cylinder and the bottom cover can be immediately detected after being welded through a plurality of groups of independent air leakage detection meters and air passages, defects such as air holes and cracks can be found in advance compared with a traditional water immersion method, unqualified parts are prevented from flowing into subsequent procedures, and batch scrapping and cost are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shock absorber detection technical field, concretely relates to a cylinder shock absorber manual leak detection device. BACKGROUND

[0002] As the core component of the automobile suspension system, the sealing property of the cylinder shock absorber directly affects the driving stability and safety of the vehicle. In the production process of the shock absorber, the welding process of the oil storage cylinder and the bottom cover is the key link for forming the sealed cavity, and welding defects (such as pores, cracks, poor fusion, etc.) will cause sealing failure, which is one of the main hidden dangers of shock absorber oil leakage.

[0003] In the prior art, the sealing property of the shock absorber is generally detected by the water immersion method, and the leakage position and degree are judged by observing the generation of bubbles, so that the leakage position can be directly displayed, and whether the air tightness of the shock absorber is qualified or not can be judged.

[0004] However, the traditional water immersion detection is usually carried out after the overall assembly of the shock absorber is completed, and the sealing property of the welding interface cannot be independently detected after the welding process of the oil storage cylinder and the bottom cover is completed. If the welding defects of the process are not found in time, unqualified parts will flow into the subsequent piston rod assembly, oil seal installation and other processes, resulting in batch scrap of semi-finished products. When the leakage is found in the final detection, the complex structure of the assembled product needs to be disassembled and reworked, which not only causes waste of raw materials, but also greatly increases the labor cost and production cycle, seriously affecting the manufacturing efficiency. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a cylinder shock absorber manual leak detection device, which can detect immediately after the welding of the oil storage cylinder and the bottom cover through multiple independent air leakage detection tables and gas passages, and can find defects such as pores and cracks earlier than the traditional water immersion method, avoid unqualified parts flowing into subsequent processes, and reduce batch scrap and cost.

[0006] To solve the above technical problems, the utility model provides a cylinder shock absorber manual leak detection device, which comprises a workbench, a plurality of first air guide holes are formed on the vertical surface of one side of the workbench, each air pipe is connected with an air pipe through a flange at one end, that is, each first air guide hole is connected on the vertical surface of one side of the workbench through a flange, and the one end of each air pipe is connected to a multi-channel connection assembly, the multi-channel connection assembly is provided as a five-way joint, the one end of each air pipe is connected to the joint of the corresponding five-way joint through a flange, a gas guide pipe is connected to the gas outlet of the gas storage tank.

[0007] The upper part of the workbench is provided with a plurality of second air guiding holes in the vertical direction, the number of the second air guiding holes corresponds to the first air guiding holes, that is, when the first air guiding holes are five, the number of the second air guiding holes is also five, the second air guiding holes are communicated with the first air guiding holes (because the first air guiding holes are horizontally arranged, and the second air guiding holes are vertically arranged, so that the direction of the gas is changed), and a gas leakage detection table is threadedly connected in each second air guiding hole; a hose is buckled to the interface of the gas leakage detection table; and the other end of the hose is connected in the detection hole of the oil storage cylinder through a threaded joint.

[0008] The upper part of the workbench is provided with a plurality of groups of clamping assemblies, the number of the clamping assemblies corresponds to the number of the gas leakage detection tables, that is, when the gas leakage detection tables are five, the clamping assemblies are also five groups; each group of clamping assemblies comprises a mounting groove arranged on the upper part of the workbench, a linear sliding table is connected in the mounting groove through bolts, a sliding block is slidably connected to the linear sliding table, a driving block is fixedly connected to the upper part of the sliding block, and a limiting plate is fixedly connected to the vertical surface of the side of the driving block close to the gas leakage detection table.

[0009] The upper part of the workbench is provided with a plurality of groups of clamping assemblies, the number of the clamping assemblies corresponds to the number of the gas leakage detection tables, that is, when the gas leakage detection tables are five, the clamping assemblies are also five groups; each group of clamping assemblies comprises a mounting groove arranged on the upper part of the workbench, a linear sliding table is connected in the mounting groove through bolts, a sliding block is slidably connected to the linear sliding table, a driving block is fixedly connected to the upper part of the sliding block, and a limiting plate is fixedly connected to the vertical surface of the side of the driving block close to the gas leakage detection table.

[0010] The upper part of the workbench is provided with a plurality of groups of clamping assemblies, the number of the clamping assemblies corresponds to the number of the gas leakage detection tables, that is, when the gas leakage detection tables are five, the clamping assemblies are also five groups; each group of clamping assemblies comprises a mounting groove arranged on the upper part of the workbench, a linear sliding table is connected in the mounting groove through bolts, a sliding block is slidably connected to the linear sliding table, a driving block is fixedly connected to the upper part of the sliding block, and a limiting plate is fixedly connected to the vertical surface of the side of the driving block close to the gas leakage detection table.

[0011] The upper part of the workbench is provided with a plurality of groups of clamping assemblies, the number of the clamping assemblies corresponds to the number of the gas leakage detection tables, that is, when the gas leakage detection tables are five, the clamping assemblies are also five groups; each group of clamping assemblies comprises a mounting groove arranged on the upper part of the workbench, a linear sliding table is connected in the mounting groove through bolts, a sliding block is slidably connected to the linear sliding table, a driving block is fixedly connected to the upper part of the sliding block, and a limiting plate is fixedly connected to the vertical surface of the side of the driving block close to the gas leakage detection table.

[0012] The beneficial effects of the above technical scheme of the utility model are as follows:

[0013] 1. Precise detection of welding defects, avoiding batch quality loss: by arranging a plurality of independent gas leakage detection tables and gas passages on the workbench, sealing detection can be performed immediately after the oil storage cylinder and the bottom cover are welded, compared with the traditional water immersion method, the device can accurately locate the leakage point at the first time when the welding defects (air holes, cracks, etc.) occur, and the unqualified parts are prevented from flowing into the subsequent high-cost processes such as piston rod assembly and oil seal installation, so that the batch semi-finished product is prevented from being scrapped from the source, and the waste of raw materials and the cost of rework are significantly reduced.

[0014] 2. Multi-station detection, improve production rate: adopt multi-channel connection components such as five-way joints, can simultaneously connect multiple detection stations, support multiple oil storage cylinders synchronous inflation detection. With the quick positioning function of clamping assembly and limiting assembly, realize the pipeline operation of "welding and detection", effectively shorten the production cycle, meet the needs of modern mass production.

[0015] 3. Self-adaptive clamping positioning: the linear slide and slide block driving structure in the clamping assembly can adjust the position of the limiting plate according to the length of the oil storage cylinder, cooperate with the sealing gasket mounting hole of the supporting block and the limiting assembly, form a stable clamping structure of "two-end limiting + middle supporting". The arc-shaped groove design of the driving block and the supporting block fits the oil storage cylinder shell, which can adapt to different diameter specifications of the oil storage cylinder, and can realize reliable sealing through the elastic contact of the sealing gasket, avoid misjudgment caused by workpiece shaking or sealing failure during detection, significantly improve the detection compatibility and stability.

[0016] 4. Gas pressure detection is environmentally friendly and efficient, reduces additional detection cost: gas pressure detection instead of water immersion method, no need for complex water treatment equipment, avoid workpiece water stain pollution and secondary drying process after detection, reduce mechanical damage risk. The air leakage detection table intuitively feedbacks the sealing performance through pressure change, easy to operate and low maintenance cost, no liquid residue in the detection process, fundamentally solves the problems of poor environmental adaptability and complicated subsequent treatment of traditional water immersion method.

[0017] 5. Strengthen the structure design, guarantee long-term operation: the inclined reinforcing rib is arranged between the blocking plate and the mounting plate of the limiting assembly, which effectively improves the impact resistance and avoids structural deformation caused by long-term clamping stress; the vent pipeline adopts flange connection combined with O-ring sealing, reduces the air leakage rate, ensures stable transmission of air pressure, the sealing gasket is made of rubber material and blind hole structure is opened, which provides flexible sealing while enhancing the fit of the end surface of the oil storage cylinder, further improves the detection accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic diagram of the utility model;

[0019] Figure 2 It is another side overall structure schematic diagram of the utility model;

[0020] Figure 3 It is the Figure 1 Partial enlarged structure schematic diagram of the utility model;

[0021] Figure 4 It is the Figure 2 Partial enlarged structure schematic diagram of the utility model.

[0022] In the figure: 101, workbench; 102, air pipe; 103, five-way joint; 104, air leakage detection table; 105, hose; 106, air guide pipe;

[0023] 201, mounting groove; 202, linear slide; 203, driving block; 204, limiting plate; 205, supporting block;

[0024] 301, mounting plate; 302, blocking plate; 303, sealing gasket; 304, mounting hole; 305, reinforcing rib. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the following will combine the drawings of the embodiments of the utility model to make a detailed description. Figures 1-4 The technical scheme of the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art belong to the scope of protection of the utility model.

[0026] A manual leakage detection device for a cylinder shock absorber, as shown in Figure 1 , 2 The utility model discloses a kind of manual leakage detection devices for cylinder shock absorber, as shown in ,

[0027] Each air pipe 102 is connected to the joint of corresponding five-way joint 103 by flange at one end, and the flange connection in the above is sealed with O-ring, which reduces the air leakage rate and improves the sealing during connection. The air inlet of the five-way joint 103 is connected to the air guide pipe 106, and one end of the air guide pipe 106 is connected to the air outlet of the gas storage tank. After rotating the valve of the gas storage tank, the gas storage tank is opened, so that the discharged gas can pass through the air guide pipe 106, the five-way joint 103 and the air pipe 102 in sequence and enter the five first air holes.

[0028] As shown in Figure 1 , 2As shown: the upper part of the workbench 101 is provided with a plurality of second air guide holes in the vertical direction, the number of second air guide holes corresponds to the setting of the first air guide hole, that is, when the first air guide hole is set to five, the number of second air guide holes is also set to five, which can reduce the production cost (avoid excessive opening or insufficient opening when the number does not correspond), and also can correspond one by one between the first air guide hole and the second air guide hole, improve the convenience during use, and avoid connection errors during assembly (avoid connection errors during assembly that require the use of air guide holes).

[0029] The second air guide hole is communicated with the first air guide hole (because the first air guide hole is horizontally arranged and the second air guide hole is vertically arranged, the purpose of changing the direction of the gas is achieved), so that the gas passing through the first air guide hole can be introduced into the second air guide hole, and the purpose of further changing the direction of the gas is achieved. Each second air guide hole is connected with a gas leakage detection table 104 through threaded connection. After setting the gas leakage detection table 104, the pressure is observed after the pressure gas is introduced, and whether the welded oil storage cylinder and the bottom cover meet the standard can be judged, so that the detection can be carried out immediately after welding, and during the detection process, the detection time can be saved, and complex maintenance is not required, and the mechanical damage risk is also reduced.

[0030] The interface of the gas leakage detection table 104 is connected with a hose 105 through a buckle, and the other end of the hose 105 is connected in the detection hole of the oil storage cylinder through a threaded joint, so that the gas tank can be opened, the gas with pressure enters the five-way joint 103 through the air guide pipe 106, and then enters the gas leakage detection table 104 through the air pipe 102, the first air guide hole and the second air guide hole. Then, the gas enters the oil storage cylinder through the hose 105. At this time, whether the pressure of the gas leakage detection table 104 decreases can be observed to judge whether the welded oil storage cylinder and the bottom cover leak.

[0031] As shown: Figure 2 The upper part of the workbench 101 is provided with a plurality of clamping assemblies, and the number of clamping assemblies corresponds to the number of gas leakage detection tables 104, that is, when the gas leakage detection table 104 is set to five, the clamping assembly is also set to five groups, which can avoid resource waste caused by excessive setting, and can correspond one by one to avoid assembly errors during connection.

[0032] Each set of clamping assemblies comprises a mounting groove 201 arranged on the upper portion of the workbench 101, a linear sliding table 202 is connected in the mounting groove 201 by bolts, the linear sliding table 202 is connected in the mounting groove 201, which can save vertical space and avoid being exposed to the outside and being damaged by knocking with other objects. The linear sliding table 202 is slidably connected with a sliding block, the upper portion of the sliding block is fixedly connected with a driving block 203, the driving block 203 is fixedly connected with a limiting plate 204 on the vertical surface close to one side of the air leakage detection table 104, so that the bottom of the oil storage cylinder abuts against the vertical surface of one side of the limiting plate 204, the sliding block on the linear sliding table 202 is driven to move away from one side of the air leakage detection table 104, which can further clamp and position various specifications of the oil storage cylinder, improve the applicability of the clamping assembly, and avoid shaking of the oil storage cylinder during detection.

[0033] As shown in Figure 2 , 3 : the upper portion of the workbench 101 and on the side away from the air leakage detection table 104 of the mounting groove 201 is bolted with a supporting block 205, which is used to support one end of the oil storage cylinder, so that both ends of the oil storage cylinder can be supported by cooperating with the driving block 203, further improving the stability of the oil storage cylinder when clamped. The upper portions of the driving block 203 and the supporting block 205 are both provided with arc-shaped grooves for adapting to the shell of the oil storage cylinder, further improving the stability of the oil storage cylinder support.

[0034] As shown in Figure 2 , 3 , 4: the upper portion of the workbench 101 and on the side away from the air leakage detection table 104 is provided with a plurality of limiting assemblies, the number of limiting assemblies corresponds to the number of clamping assemblies, that is, when the clamping assemblies are set to five groups, the limiting assemblies are also set to five groups.

[0035] Each set of limiting assemblies comprises a mounting plate 301 bolted on the upper portion of the workbench 101, and a blocking plate 302 is fixedly connected to the upper portion of the mounting plate 301. The blocking plate 302 is arranged to limit the other end of the oil storage cylinder, and the two ends of the oil storage cylinder can be limited by cooperating the limiting plate 204 with the blocking plate 302, thereby improving the positioning effect of the oil storage cylinder and avoiding shaking of the oil storage cylinder during air tightness detection.

[0036] The sealing gasket 303 is fixedly connected to the vertical surface of the blocking plate 302 on the side of the air leakage detection table 104. The sealing gasket 303 can avoid wear of the one end of the oil storage cylinder due to continuous friction, and can also seal the one end of the oil storage cylinder, further improving the accuracy of the air tightness detection. The sealing gasket 303 is made of rubber material, which can reduce the manufacturing cost and improve the sealing effect of the one end of the oil storage cylinder. The mounting hole 304 is formed in the vertical surface of the sealing gasket 303 away from the blocking plate 302. The mounting hole 304 is a blind hole structure, which can further fit the one end of the oil storage cylinder, so that the one end of the oil storage cylinder can be embedded in the mounting hole 304, further improving the sealing effect and the accuracy of the air tightness detection.

[0037] The reinforcing rib 305 is obliquely arranged between the vertical surface of the blocking plate 302 away from the sealing gasket 303 and the mounting plate 301, which can further improve the stability of the blocking plate 302, avoid the continuous friction of the clamping assembly on the blocking plate 302 when clamping the oil storage cylinder, and prevent the blocking plate 302 from being inclined or broken. The two ends of the reinforcing rib 305 are fixedly connected to the blocking plate 302 and the mounting plate 301, respectively, so that the inclined reinforcing rib 305 further improves the support effect of the blocking plate 302.

[0038] In use, the workbench 101 is placed on a table or other work platform on the side of the welding device (a welding device for welding the oil storage cylinder and the bottom cover). After the oil storage cylinder and the bottom cover are welded, the one side of the oil storage cylinder with the bottom cover is in contact with the limiting plate 204, and the straight line sliding table 202 is started to move the sliding block and the driving block 203 on it to the side of the blocking plate 302, so that the other end of the oil storage cylinder is in contact with the sealing gasket 303 on the blocking plate 302. Then the hose 105 is connected to the detection hole on the oil storage cylinder. If multiple oil storage cylinders need to be tested continuously, they are installed on the workbench 101 in sequence according to the above steps.

[0039] After the connection is completed, the valve on the gas storage tank is opened, and the gas enters the oil storage cylinder through the multiple pipelines. Whether the oil storage cylinder meets the standard can be judged by observing whether the pressure of the air leakage detection table 104 decreases. Therefore, the oil storage cylinder can be detected immediately after welding, and the oil storage cylinder can be quickly detected at the first time to avoid the situation that a large number of rework occurs due to unqualified products flowing into the subsequent process.

[0040] In addition, it needs to be explained that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles described in the present application, a number of improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A hand-held leak detection device for a tube shock absorber, characterized by: Including workbench (101), the workbench (101) one side vertical surface is provided with a plurality of first air guide holes, one side of each first air guide hole is connected with a ventilation pipe (102), one end of each ventilation pipe (102) is connected on a multi-channel connecting assembly, the air inlet of the multi-channel connecting assembly is connected with a gas guide pipe (106), the gas guide pipe (106) is connected on a gas storage tank; The workbench (101) is provided with a plurality of second air guide holes in the vertical reverse direction on the upper portion, the second air guide hole is communicated with the first air guide hole, the second air guide hole is provided with a gas leakage detection table (104), the interface of the gas leakage detection table (104) is connected with a hose (105), the other end of the hose (105) is connected in the detection hole of the oil storage cylinder.

2. The shock absorber hand leak-down device of claim 1, wherein: The multi-channel connecting assembly is provided as a five-way joint (103), one end of each ventilation pipe (102) is connected at the interface of the corresponding five-way joint (103) through a flange.

3. The shock absorber hand leak-down device of claim 1, wherein: The workbench (101) is provided with a plurality of clamping assemblies on the upper portion, each clamping assembly comprises a mounting groove (201) provided on the upper portion of the workbench (101), a linear sliding table (202) is provided in the mounting groove (201), a sliding block is slidably connected on the linear sliding table (202), a driving block (203) is provided on the upper portion of the sliding block, a limiting plate (204) is provided on the vertical surface of the side of the driving block (203) close to the gas leakage detection table (104).

4. The shock absorber hand leak-down device of claim 3 wherein: The workbench (101) is provided with a support block (205) on the upper portion and on the side away from the gas leakage detection table (104) of the mounting groove (201), for supporting one end of the oil storage cylinder.

5. The shock absorber hand leak-down device of claim 4 wherein: The workbench (101) is provided with a plurality of limiting assemblies on the upper portion and on the side away from the gas leakage detection table (104), each limiting assembly comprises a mounting plate (301) provided on the upper portion of the workbench (101), a blocking plate (302) is provided on the upper portion of the mounting plate (301), a sealing gasket (303) is provided on the vertical surface of the side of the blocking plate (302) facing the gas leakage detection table (104), a mounting hole (304) is provided on the vertical surface of the side of the sealing gasket (303) away from the blocking plate (302).

6. The shock absorber hand leak-down device of claim 5 wherein: The vertical surface between the blocking plate (302) and the mounting plate (301) on the side away from the sealing gasket (303) is provided with a reinforcing rib (305).

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