CN217842222U - Welding spot defect detection device for hydraulic equipment oil cylinder body - Google Patents

Abstract

The utility model relates to a solder joint check out test set discloses a hydraulic equipment oil cylinder body solder joint defect detecting device, including the sealing member that is used for sealed oil cylinder body (1) and pressure testing pump (17) that link to each other with oil cylinder body (1), the sealing member can be right oil cylinder body (1) seals, with the inside of oil cylinder body (1) forms seal chamber, seal chamber passes through pressure testing pump (17) pressurize it. The utility model discloses a sealing member seals the hydro-cylinder body to can link to each other pressure testing pump and seal chamber at the inside seal chamber that forms of hydro-cylinder body, pressurize seal chamber inside through the forcing pump, make the pressure in the seal chamber be greater than the pressure of its during operation, thereby can guarantee the validity that detects.

Description

Welding spot defect detection device for hydraulic equipment oil cylinder body

Technical Field

The utility model relates to a solder joint check out test set especially relates to a hydraulic equipment hydro-cylinder body solder joint defect detection device.

Background

The welding quality detection refers to the detection of welding results, and aims to ensure the integrity, reliability, safety and usability of a welding structure. In addition to the requirements for welding technology and welding process, weld quality detection is also an important part of the quality management of welded structures. With the research and development and production of high-end hydraulic equipment in some domestic enterprises in recent years, detection devices matched with the high-end hydraulic equipment are urgently needed.

Firstly, the oil cylinder body stated in the application is greatly different from the traditional hydraulic cylinder, the oil cylinder body of some hydraulic equipment is irregular in shape, the channels needing to be processed are numerous, and the process and the technology are limited, so that the channels need to be blocked and welded again after the processing is finished, but welding defects such as air holes, cracks and the like may exist due to the influence of the welding process and the welding technology. Because the hydraulic equipment has high pressure (possibly reaching more than 20 MPa) and large vibration in the working process, the welding points often have oil leakage phenomenon, and the performance and the use of the equipment are influenced. After the oil leakage phenomenon occurs, the welding spot repair welding can be carried out again only by disassembling the machine, but the welding difficulty is invisibly increased due to the penetration of oil liquid to the welding spot, and the craters and grooves are removed again. The reciprocating operation is repeated for several times, which not only takes time and labor, but also can cause irreparable damage to the oil cylinder body, thereby being scrapped.

Therefore, a detection device is urgently needed to detect the welding spot defects of the oil cylinder body before the installation test so as to ensure the normal operation of the hydraulic equipment in work.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the main technical problem that a hydraulic equipment oil cylinder body solder joint defect detection device is provided, can detect the sealed condition of solder joint on the oil cylinder body fast.

In order to solve the technical problem, the utility model provides an aspect provides a hydraulic equipment oil cylinder body solder joint defect detection device, including the sealing member that is used for sealed oil cylinder body and the pressure testing pump that links to each other with the oil cylinder body, the sealing member can be right the oil cylinder body seals, with the inside formation seal chamber of oil cylinder body, seal chamber passes through the pressure testing pump pressurizes it.

Preferably, the pressure test pump includes depression bar, piston and pump body at least, the depression bar with arrange in the pump body the piston is connected, the pump body through connecting line with the oil inlet of the oil cylinder body is connected, in order to can press when the depression bar, will pressure test liquid input in the pump body in the sealed cavity. Through this preferred technical scheme, seal in pressing the pressure testing liquid pressure into sealed cavity through the pump of exerting pressure to can show more directly perceivedly whether have the defect of solder joint on the oil cylinder body.

Further preferably, the pressure test liquid is an antirust cutting fluid. Through this preferred technical scheme, the pressure testing liquid adopts rust-resistant cutting fluid can play certain lubrication and rust-resistant effect to the hydro-cylinder inner wall.

Preferably, the sealing member includes at least a left end cap and a right end cap, and the left end cap and the right end cap can be connected to the cylinder block by a plurality of bolts. Through this preferred technical scheme, adopt left end cover and right-hand member lid to seal the hydro-cylinder body to this guarantees the leakproofness of the inside seal chamber of hydro-cylinder body.

Further preferably, the left end cover and the right end cover are both provided with sealing grooves, and an O-shaped sealing ring A, an O-shaped sealing ring B and an O-shaped sealing ring C can be arranged in the sealing grooves respectively. Through this preferred technical scheme, adopt O shape sealing washer A, O shape sealing washer B and O shape sealing washer C can further improve holistic sealed effect.

Preferably, the left end cover and the right end cover are matched with the end face of the oil cylinder body in shape, so that the oil cylinder body can be sealed. Through this preferred technical scheme, with the shape setting of left end lid and right end lid with the left end face and the right-hand member face looks adaptation of hydro-cylinder body to can be better seal the hydro-cylinder body.

Further preferably, the left end cover and the right end cover are both 40Cr material quenched formed parts. Through this preferred technical scheme, left end cover and right-hand member lid all adopt 40Cr material quenching formed part, have guaranteed the intensity of left end cover and right-hand member lid, have improved life.

Preferably, the pressure test pump is a manual pressure test pump. Through this preferred technical scheme, adopt manual pressure testing pump can control the pressure size of impressing in the oil cylinder body at any time.

Further preferably, the pressure test pump further comprises a pressure gauge, so that the pressure gauge can detect the pressure in the sealed cavity. Through this preferred technical scheme, the setting of manometer can real-time detection impress the pressure size in the hydro-cylinder body, thereby avoid impresses too high pressure in the hydro-cylinder body and lead to unexpected emergence.

Preferably, the sealing member further comprises a plurality of nuts a and B, and an elastic pad a, an elastic pad B and an elastic pad C are respectively arranged between each of the nuts a and B and the cylinder block. Through this preferred technical scheme, fasten the bolt through setting up the nut to set up between nut and the hydro-cylinder body and play the pad and can further improve holistic fastening, sealed effect.

Through the technical scheme, the utility model discloses a hydraulic equipment hydro-cylinder body solder joint defect detecting device seals the hydro-cylinder body through the sealing member to can be at the inside seal chamber that forms of hydro-cylinder body, and link to each other pressure testing pump and seal chamber, pressurize seal chamber inside through the forcing pump, make the pressure in the seal chamber be greater than the pressure of its during operation, thereby can guarantee the validity that detects.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

FIG. 1 is a schematic view of an internal structure of an oil cylinder body of a welding spot defect detecting device for an oil cylinder body of a hydraulic device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a three-dimensional structure of an oil cylinder body of the welding spot defect detecting device for the oil cylinder body of the hydraulic equipment according to the embodiment of the present invention;

fig. 3 is a schematic structural view of a left end cover of the welding spot defect detection device of the hydraulic equipment oil cylinder body according to the specific embodiment of the present invention;

FIG. 4 isbase:Sub>A schematic sectional view A-A of FIG. 3;

fig. 5 is a schematic view of the three-dimensional structure of the welding spot defect detecting device for the oil cylinder body of the hydraulic equipment according to the embodiment of the present invention.

Reference numerals

1. 2 welding spots of oil cylinder body

3. Left end cap 4,8, 14 bolt

5O-shaped sealing ring A6 elastic cushion A

7. Nut A9 right end cover

16. Oil inlet 17 pressure test pump

12 O-shaped sealing ring B15O-shaped sealing ring C

11. Spring pad B13 spring pad C

10. Nut B

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," and "connected" are to be construed broadly, for example, the term "connected" may be a fixed connection, a detachable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The utility model discloses an embodiment of hydraulic equipment oil cylinder body solder joint defect detection device, as shown in fig. 1, including the sealing member that is used for sealed oil cylinder body 1, and the pressure testing pump 17 that links to each other with oil cylinder body 1, oil cylinder body 1 in the present application is different from the pneumatic cylinder in the traditional meaning, current pneumatic cylinder presents the monolithic structure for the tube-shape usually, and oil cylinder body 1 majority in the present application presents for irregular shape, because oil cylinder body 1 majority is irregular shape, consequently, have numerous pore that need processing in its inside, before normal use, need weld the shutoff again to some pore wherein, with the holistic leakproofness of assurance oil cylinder body 1, and can produce not few solder joints 2 after welding the shutoff again, receive welding process's influence, partial solder joint 2 can have certain defect, for example the crack, the gas pocket etc., if solder joint 2 produces the defect, the condition of oil leak appears easily in hydraulic equipment's normal work, consequently, need detect solder joint 2 on oil cylinder body 1, avoid the emergence of bad conditions such as oil leak to appear in normal work of equipment. In this application, adopt the sealing member to seal oil cylinder body 1 to can form sealed cavity in oil cylinder body 1 is inside, then pressurize through pressure testing pump 17 and detect this sealed cavity, if feel obvious wind pressure in solder joint 2 department, indicate that this solder joint 2 has the defect promptly, accomplish the accurate detection to solder joint 2 defect with this.

The utility model discloses an embodiment of 2 defect detecting devices of hydraulic equipment hydro-cylinder body 1 solder joint, as shown in fig. 2, pressure testing pump 17 includes depression bar, piston and the pump body at least, and wherein the depression bar links to each other with the piston of installing in the pump body to the pump body passes through connecting line and links to each other with the oil inlet 16 of hydro-cylinder body 1, comes to inspect solder joint 2 on the hydro-cylinder body 1 through filling the pressure testing liquid in the pump body, with this can show more audio-visually whether there is the defect in solder joint 2. When the pressure test is checked, firstly, enough pressure test liquid is filled into the pressure test pump 17, then, the pressure rod is lifted upwards, the pressure rod drives the piston to ascend, at the moment, air in the pump body can be sucked, so that vacuum is formed in the pump body, the pressure test liquid in the pressure test pump 17 is acted by atmospheric pressure and finally flows into the pump body, then, the pressure rod is pressed downwards, the piston is driven by the pressure rod to descend, the pressure test liquid in the pump body is finally input into the oil cylinder body 1 through a related connecting pipeline under the action of the piston pressure, the reciprocating motion is carried out continuously, so that the pressure test liquid in the pressure test pump 17 is continuously input into the oil cylinder body 1, the pressure in the oil cylinder body 1 is continuously increased along with the continuous input of the pressure test liquid, when the pressure in the oil cylinder body 1 is increased to be more than 2 times of normal working pressure, the oil cylinder body 1 is stopped to be continuously pressurized and is kept at the pressure for more than 30s, and if no defect exists in the oil cylinder body 2 or the pressure test liquid is sprayed in a foggy form, namely, the defect-free welding spot 2 is indicated; if the pressure testing liquid seeps or is sprayed out in a fog-shaped form in the welding spot 2, the welding spot 2 has defects, and the welding spot 2 seeping or spraying the pressure testing liquid has defects, so that the welding spot 2 with the defects is accurately positioned, and the welding spot 2 is processed, and the whole sealing performance of the oil cylinder body 1 is ensured.

Specifically, the pressure application liquid is preferably an antirust cutting liquid, which is used as the pressure application liquid rather than water as the pressure test liquid, on one hand, because the antirust cutting liquid has a good lubricating effect, after the antirust cutting liquid contacts the inside of the oil cylinder body 1, a lubricating film can be formed inside the sealed cavity of the oil cylinder body 1, so that friction between air and micro impurities contained in oil and the inner wall of the sealed cavity can be reduced, on the other hand, because the antirust cutting liquid has a good antirust effect, after the sealed cavity is pressurized, if the liquid such as water is used as the pressure test liquid, the inside of the oil cylinder body 1 needs to be dried, so as to prevent the oil cylinder body 1 from rusting, and the antirust cutting liquid has a certain protective effect on the inner wall of the oil cylinder body 1, so as to effectively prevent the inner wall of the oil cylinder body 1 from rusting.

The utility model discloses an embodiment of hydraulic equipment oil cylinder body solder joint defect detection device, as shown in FIG. 1, the sealing member of oil cylinder body 1 includes left end lid 3 and right-hand member lid 9 at least, left end lid 3 and right-hand member lid 9 are through a plurality of bolts 4,8, 14 link to each other with oil cylinder body 1, through bolt 4,8, 14 fix left end lid 3 and right-hand member lid 9 on the terminal surface of oil cylinder body 1, realize left end lid 3 and right-hand member lid 9 sealed to oil cylinder body 1 with this, through the sealed of left end lid 3 and right-hand member lid 9, make and to form seal chamber body 1 inside at oil cylinder body, satisfy the restriction of required sealing environment when pressure testing pump 17 pressurizes oil cylinder body 1 with this, guarantee that pressure testing pump 17 can carry out stable pressurization to oil cylinder body 1, in order to accomplish the detection to the sealed condition of butt welding point 2.

Specifically, as shown in fig. 3 to 4, sealing grooves are formed in the left end cover 3 and the right end cover 9, an O-ring A5, an O-ring B12, and an O-ring C15 are arranged in the sealing grooves, the sealing effect on the left end cover 3 and the right end cover 9 is further enhanced by the arrangement of the O-rings A5, B12, and C15, the O-rings A5, B12 are used to apply grease to the left end cover 3 and the right end cover 9, the O-rings A5, C15 are applied to the sealing groove of the left end cover 3, the left end cover 3 is slowly attached to the left end face of the oil cylinder body 1 to complete the sealing operation on the left end face of the oil cylinder body 1, and similarly, the O-rings B12 are applied to prevent the grease from being applied to the sealing groove of the right end cover 9, and then are slowly attached to the section of the oil cylinder body 1 to complete the sealing on the right end face of the oil cylinder body 1. Through the matching of the bolts 4,8 and 14 with the O-shaped sealing ring A5, the O-shaped sealing ring B12 and the O-shaped sealing ring C15, the left end cover 3 and the right end cover 9 can be tightly attached to the left end face and the right end face of the oil cylinder body 1, so that a sealing cavity with good sealing performance is formed inside the oil cylinder body 1, and the defect that a welding spot 2 on the oil cylinder body 1 can be accurately detected in the pressurizing process of the pressure test pump 17 on the sealing cavity is guaranteed.

The utility model discloses an embodiment of hydraulic equipment oil cylinder body solder joint defect detecting device, as shown in fig. 3, left end lid 3 and right-hand member end lid 9 respectively with oil cylinder body 1's left end face and right-hand member face shape looks adaptation, install left end lid 3 and right-hand member end lid 9 respectively on oil cylinder body 1's left end face and right-hand member face back, left end lid 3 and right-hand member end lid 9 can with oil cylinder body 1's left end face and right-hand member face looks adaptation, with this sealed back through left end lid 3 and right-hand member end lid 9, the leakproofness at the seal chamber of 1 inside formation of oil cylinder body has been guaranteed. And adopt the end cover that does not seal with the left end face of the oil cylinder body 1 and the right-hand member face looks adaptation, left end cover 3 and right-hand member lid 9 can produce the clearance with the left end face of the oil cylinder body 1 and the junction of right-hand member face, thereby make left end cover 3 and right-hand member lid 9 can't effectually seal the left end face and the right-hand member face of the oil cylinder body 1, influence the leakproofness of the sealed cavity of the inside of the oil cylinder body 1 easily, and left end cover 3 and right-hand member lid 9 are identical with the shape of the left end face and the right-hand member face of the oil cylinder body 1, make left end cover 3 and right-hand member lid 9 laminate with the left end face and the right-hand member face of the oil cylinder body 1 completely after, pressurize to the inside of the oil cylinder body 1 through pressure testing pump 17, the atress of left end cover 3 and right-hand member lid 9 is even, guarantee the airtight reliability of the left end face and the right-hand member face of the oil cylinder body 1.

The utility model discloses an embodiment of hydraulic equipment oil cylinder body solder joint defect detection device, left end lid 3 and right-hand member lid 9 are the quenching formed part of 40Cr material, 40Cr is the standard steel number of national standard of china, 40Cr steel is one of the most extensive steel of machine-building industry use, 40Cr steel has good comprehensive mechanical properties after quenching and tempering, good low temperature impact toughness and low breach sensitivity, the hardenability of 40Cr steel is good, can quench through to phi 28 ~ 60mm during the water quenching, can quench through to phi 15 ~ 40mm during the oil quenching, this kind of steel can also be suitable for cyaniding and high frequency quenching except that quenching and tempering handles. The steel has good machinability, and when the hardness is 174-229 HB, the relative machinability is 60%, so that the 40Cr steel is adopted as the material for manufacturing the right end cover 9 of the left end cover 3, the hardness and the strength of the end cover can be ensured, and the service life of the end cover can be prolonged. In addition, because the left end cover 3 and the right end cover 9 which are matched with the left end surface and the right end surface of the oil cylinder body 1 are irregular in shape, a plasma cutting machine is required to be adopted for cutting, so that the left end cover 3 and the right end cover 9 can be completely matched with the left end surface and the right end surface of the oil cylinder body 1, and the sealing effect is ensured.

The utility model discloses an embodiment of hydraulic equipment oil cylinder body solder joint defect detection device, as shown in FIG. 5, the pressure testing pump 17 is preferred to adopt manual pressure testing pump, because need carry out real time control to the atmospheric pressure of 1 inside oil cylinder body, adopt manual pressure testing pump can thereupon stop carrying out the suppressing of liquid to 1 inside oil cylinder body to this can avoid squeezing into too high pressure to 1 inside oil cylinder body, thereby lead to 1 of oil cylinder body not to bear great pressure and lead to unexpected emergence. In addition, because the detection process is static detection, the detection pressure in the oil cylinder body 1 is set to be more than 2 times of the normal working pressure of a machine, the pressure in the oil cylinder body 1 is displayed in real time by a pressure gauge arranged on a pressure test pump 17, the pressure in a sealed cavity in the oil cylinder body 1 can be detected by the pressure gauge, the pressure pressed into the oil cylinder body 1 subsequently can be adjusted according to the detected pressure in the oil cylinder body 1, when the display number on the pressure gauge reaches more than 40MPa, the continuous pressing on the interior of the oil cylinder body 1 is stopped, the pressure is kept for more than 30s, in the process, if no liquid seeps out or atomized liquid is sprayed out from the welding point 2, the defect of the welding point 2 on the oil cylinder body 1 is overcome, otherwise, the defect of the corresponding welding point 2 on the surface oil cylinder body 1 needs to be repaired.

The utility model discloses an embodiment of hydraulic equipment oil cylinder body solder joint defect detecting device, as shown in fig. 1, still be provided with a plurality ofly on left end lid 3 and the right-hand member lid 9 with bolt 4,8, 14 matched with nut A7, nut B10, and every nut A7, all be provided with bullet pad A6 between nut B10 and the oil cylinder body 1, bullet pad B11, bullet pad C13, wherein, fixing bolt 4,8, 14 adopt high strength hexagon bolt 4,8, 14, nut A7, nut B10 adopt with high strength hexagon bolt 4,8, the hexagon nut A7 of 14 looks adaptations, nut B10, through hexagon nut A7, nut B10 and bolt 4,8, 14's cooperation is used, can stably fix left end lid 3 and right-hand member lid 9 on the left end face and the right-hand member face of oil cylinder body 1, in addition, every nut A7, the bullet pad A6 that sets up between nut B10 and the oil cylinder body 1, bullet pad B11, bullet pad C13 can further play the sealing effect, prevent this nut A7 and the nut B10 from expanding with it influences the space, thereby the whole cold contraction effect to receive the cold shrinkage when the oil cylinder body.

In the description of the present disclosure, reference to the description of "one embodiment," "some embodiments," "an implementation," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In the present disclosure, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical concept scope of the present invention, it can be right to perform various simple modifications to the technical solution of the present invention, including combining each specific technical feature in any suitable manner, in order to avoid unnecessary repetition, the present invention does not describe separately various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims (10)

1. The utility model provides a hydraulic equipment oil cylinder body solder joint defect detection device, its characterized in that, including the sealing member that is used for sealed oil cylinder body (1) and pressure testing pump (17) continuous with oil cylinder body (1), the sealing member can be right oil cylinder body (1) seals, with the inside formation seal chamber of oil cylinder body (1), seal chamber passes through pressure testing pump (17) pressurize it.

2. The hydraulic equipment oil cylinder body welding spot defect detecting device according to claim 1, characterized in that the pressure test pump at least comprises a pressure lever, a piston and a pump body, wherein the pressure lever is connected with the piston arranged in the pump body, and the pump body is connected with the oil inlet (16) of the oil cylinder body (1) through a connecting pipeline so as to input the pressure test liquid in the pump body into the sealed cavity when the pressure lever is pressed.

3. The hydraulic equipment oil cylinder body welding spot defect detecting device according to claim 2, wherein the pressure testing liquid is an antirust cutting liquid.

4. The hydraulic equipment cylinder block weld spot defect detection device according to any one of claims 1 to 3, wherein the sealing member comprises at least a left end cover (3) and a right end cover (9), and the left end cover (3) and the right end cover (9) can be connected with the cylinder block (1) through a plurality of bolts (4, 8, 14).

5. The welding spot defect detection device for the oil cylinder body of the hydraulic equipment according to claim 4, wherein sealing grooves are formed in the left end cover (3) and the right end cover (9), and an O-shaped sealing ring A (5), an O-shaped sealing ring B (12) and an O-shaped sealing ring C (15) can be arranged in each sealing groove.

6. The hydraulic equipment oil cylinder body welding spot defect detecting device according to claim 5, characterized in that the left end cover (3) and the right end cover (9) are both matched with the end surface shape of the oil cylinder body (1) so as to be capable of sealing the oil cylinder body (1).

7. The welding spot defect detection device for the oil cylinder body of the hydraulic equipment according to claim 4, wherein the left end cover (3) and the right end cover (9) are both 40Cr material quenched formed parts.

8. The welding spot defect detection device for the oil cylinder body of the hydraulic equipment as claimed in any one of claims 1 to 3, wherein the pressure test pump (17) is a manual pressure test pump.

9. The welding spot defect detection device for the oil cylinder body of the hydraulic equipment according to any one of claims 1 to 3, wherein the pressure test pump (17) further comprises a pressure gauge so as to detect the pressure in the sealed cavity through the pressure gauge.

10. The welding spot defect detection device for the oil cylinder body of the hydraulic equipment according to any one of claims 1 to 3, wherein the sealing element further comprises a plurality of nuts A (7) and B (10), and an elastic cushion A (6), an elastic cushion B (11) and an elastic cushion C (13) are respectively arranged between each nut A (7) and B (10) and the oil cylinder body (1).

Images