Cantilever crane inner diameter welding seam detection device

Abstract

The utility model provides a cantilever crane inner diameter welding seam detection device, and relates to the technical field of nondestructive detection. The cantilever crane inner diameter welding seam detection device comprises a mounting base, a probe assembly, a wedge block, an elastic piece in a compressed state and a guide piece. The mounting base is provided with a guide groove and a guide hole. The probe assembly is connected with the mounting base. The wedge is connected with the probe assembly. One end of the elastic member in a compressed state is connected with the probe assembly, and the other end abuts against the bottom of the guide groove. The guide piece penetrates through the guide hole and then is connected with the probe assembly. According to the cantilever crane inner diameter welding seam detection device, elastic force is provided through the elastic piece, so that pressure is formed between the wedge block and the inner wall, and the coupling performance of the cantilever crane inner diameter welding seam detection device and the to-be-detected inner diameter is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nondestructive testing, in particular to an arm frame inner diameter weld joint detection device. BACKGROUND

[0002] In industrial production and daily life, welding is a commonly used connection method. Weld joint detection is used to find and evaluate cracks, slag inclusion, incomplete fusion, porosity and other defects inside and on the surface of the weld joint. In heavy machinery (such as pump trucks), each metal part in the arm frame is connected by welding. Since the arm frame supports the hoisted object, the quality of the weld joint of the arm frame is related to the strength and stability of the heavy machinery.

[0003] At present, the method for detecting the weld joint mainly includes manual visual detection and ultrasonic detection. The manual visual detection has low efficiency and poor detection effect. The ultrasonic detection has poor detection effect for inner diameter weld joints. CONTENT OF THE INVENTION

[0004] The present application provides an arm frame inner diameter weld joint detection device for detecting the weld joint by ultrasonic detection, improving the coupling of the arm frame inner diameter weld joint detection device and the inner diameter to be detected, and further improving the weld joint detection effect.

[0005] In one aspect, the present application provides an arm frame inner diameter weld joint detection device, comprising:

[0006] a mounting seat having a guide groove and a guide hole;

[0007] a probe assembly connected to the mounting seat;

[0008] a wedge connected to the probe assembly;

[0009] a resilient member in a compressed state, one end of the resilient member being connected to the probe assembly and the other end abutting in the guide groove;

[0010] a guide member connected to the probe assembly after passing through the guide hole.

[0011] In one possible implementation, the guide member has a connecting portion and a limiting portion;

[0012] the connecting portion is connected to the probe assembly;

[0013] the guide hole is a stepped hole, and the limiting portion is located on the step surface of the stepped hole.

[0014] In one possible implementation, the limiting portion has a spacing with the step surface, and the spacing is 1-3 mm.

[0015] In a possible implementation, the probe assembly comprises a housing and a chip assembly located in the housing.

[0016] The chip assembly comprises a backing and a wafer array arranged on the backing.

[0017] In a possible implementation, the length of the minor axis of each wafer in the wafer array is 2-4 mm.

[0018] In a possible implementation, the housing comprises a shell having an opening and a housing enclosing the opening.

[0019] In a possible implementation, the housing has at least one flow groove for injecting potting glue into the housing.

[0020] In a possible implementation, the housing has a plurality of flow grooves, and each flow groove is arranged along the length direction of the housing.

[0021] In a possible implementation, the arm support inner diameter weld seam detection device further comprises a connecting line connected to the probe assembly.

[0022] In a possible implementation, the arm support inner diameter weld seam detection device further comprises an adjusting rod connected to the end of the mounting seat, and the extension part has a scale line.

[0023] The arm support inner diameter weld seam detection device provided in the application has the following beneficial effects:

[0024] The arm support inner diameter weld seam detection device provided in the application comprises a mounting seat, a probe assembly, a wedge block, an elastic member in a compressed state, and a guide member. The probe assembly is connected to the mounting seat, so that the mounting seat can bear the probe assembly. The two ends of the elastic member in the compressed state are connected to the guide groove of the mounting seat and the probe assembly, respectively, so that the mounting seat and the probe assembly are connected through the elastic member. When the arm support inner diameter weld seam detection device enters the hole to be measured, the elastic member in the compressed state provides an elastic force to the probe assembly, so that the wedge block connected to the probe assembly forms a pressure with the inner wall of the hole to be measured. The pressure can reduce or eliminate the small gap between the wedge block and the inner wall, improve the coupling of the arm support inner diameter weld seam detection device and the inner diameter to be measured, and reduce the loss of ultrasonic waves.

[0025] The pressure can also improve the contact state between the wedge block and the inner wall and improve the transmittance of ultrasonic waves between the two contact surfaces. Compared with the related art, the application can improve the coupling of the arm support inner diameter weld seam detection device and the inner diameter to be measured, reduce the loss of ultrasonic waves, and thus improve the weld seam detection effect.

[0026] In addition, the elastic member abuts against the guide groove, so that the elastic member can be stretched and contracted along the length direction of the guide groove during the stretching and contracting process, and the elastic member can be prevented from tilting during the stretching and contracting process. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0028] Figure 1 A perspective structural schematic view of an arm inner diameter weld joint detection device provided by an embodiment of the present application is shown in the figure.

[0029] Figure 2 An exploded structural schematic view of an arm inner diameter weld joint detection device provided by an embodiment of the present application is shown in the figure.

[0030] Figure 3 A structural schematic view of a mounting seat provided by an embodiment of the present application is shown in the figure.

[0031] Figure 4 An exploded structural schematic view of a probe assembly provided by an embodiment of the present application is shown in the figure.

[0032] Figure 5 A structural schematic view of a guide provided by an embodiment of the present application is shown in the figure.

[0033] Figure 6 A structural schematic view of a wedge provided by an embodiment of the present application is shown in the figure.

[0034] Explanation of Reference Signs:

[0035] 10 - mounting seat;

[0036] 11 - guide groove; 12 - guide hole; 121 - step surface;

[0037] 20 - probe assembly;

[0038] 21 - shell; 211 - drainage groove; 212 - mounting groove; 22 - chip assembly; 221 - backing;

[0039] 222 - wafer array;

[0040] 30 - wedge;

[0041] 31 - abutting surface;

[0042] 40 - elastic member;

[0043] 50 - guide;

[0044] 51 - connecting portion; 52 - limiting portion;

[0045] 60 - connecting line;

[0046] 70-adjusting rod;

[0047] 71-scale line.

[0048] The specific embodiments of the application have been shown by way of example in the above figures, and will be described in more detail hereafter. These figures and this written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to one of ordinary skill in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0049] Exemplary embodiments will be described in detail with reference to the drawings, wherein like reference numerals refer to like elements throughout. The following detailed description is not intended to limit the application, as claimed, in any way. Rather, it is described in such detail to disclose certain implementations consistent with the application, as claimed, and to provide a complete description of the disclosed implementations.

[0050] The principle of ultrasonic weld seam detection is to lower the probe into the measured inner diameter, and the arm inner diameter weld seam detection device emits ultrasonic waves. When the ultrasonic waves propagate to the weld seam area, the reflection or scattering occurs when the ultrasonic waves encounter defects in the weld seam. These reflected or scattered waves are received by the arm inner diameter weld seam detection device, and then it is determined whether there are defects in the weld seam, as well as the type, position and size of the defects.

[0051] The weld seam detection method in the related art has the problem of poor ultrasonic weld seam detection effect. The reason for this problem is that the inner wall of the measured inner diameter in the arm is worn due to long-term use or insufficient lubrication, for example, the measured inner diameter can be the inner diameter of the connecting shaft sleeve in the arm. There is a gap between the wedge and the inner wall of the measured inner diameter, and the two cannot completely fit, so that the coupling between the arm inner diameter weld seam detection device and the measured inner diameter is poor, and the weld seam detection effect is poor.

[0052] To solve the above technical problems, the embodiment of the application provides an arm inner diameter weld seam detection device. The probe assembly is connected to the mounting seat through the elastic member, so that the elastic member in the compressed state provides an elastic force to the probe assembly, and then the wedge connected to the elastic member and the inner wall of the measured inner diameter form a pressure. The pressure makes the wedge tightly fit the inner wall, thereby improving the coupling between the arm inner diameter weld seam detection device and the measured inner diameter, and improving the weld seam detection effect.

[0053] The technical solutions of the application and how the technical solutions of the application solve the above technical problems will be described in detail in the following specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the application will be described in conjunction with the drawings.

[0054] The arm frame inner diameter weld joint detection device provided by the embodiment of the present application is used for detecting the weld joint at the inner diameter to be detected in the arm frame. The arm frame can be the arm frame of a heavy machine, and the heavy machine can be a pump truck, a crane, a excavator, etc. The inner diameter to be detected in the arm frame can be the inner diameter of a connecting shaft sleeve in the arm frame, and the connecting shaft sleeve is installed in cooperation with a connecting shaft to realize the rotary connection of each section of the sub-arm frame in the arm frame.

[0055] With reference to Figure 1 and Figure 2 , the arm frame inner diameter weld joint detection device provided by the embodiment of the present application comprises a mounting seat 10, a probe assembly 20, a wedge block 30, an elastic member 40 and a guide member 50. With reference to Figure 3 , the mounting seat 10 is the base body in the arm frame inner diameter weld joint detection device, and the mounting seat 10 can be tubular or approximately tubular. As shown in Figure 4 , the mounting seat 10 is provided with a guide groove 11 and a guide hole 12, the guide groove 11 is used for guiding the elastic member 40, and the guide hole 12 is used for guiding the guide member 50.

[0056] The probe assembly 20 is connected with the mounting seat 10, for example, the probe assembly 20 can be installed in the cavity of the mounting seat 10, so that the mounting seat 10 carries the probe assembly 20. The probe assembly 20 is used for emitting ultrasonic waves.

[0057] With reference to Figure 2 , the wedge block 30 is the medium during the transmission of ultrasonic waves, and the wedge block 30 is connected with the probe assembly 20, for example, clamped, bonded or threaded. The wedge block 30 is located on the side of the probe assembly 20 away from the mounting seat 10, so that the wedge block 30 is convenient to abut against the inner wall of the hole to be detected.

[0058] With reference to Figure 2 , the elastic member 40 in the compressed state is arranged between the mounting seat 10 and the probe assembly 20, and the elastic member 40 can be a spring, a spring sheet or other elastically deformable structure. The first end of the elastic member 40 is connected with the probe assembly 20, for example, with reference to Figure 4 , the probe assembly 20 is provided with a mounting groove 212, and the first end of the elastic member 40 is located in the mounting groove 212. The second end of the elastic member 40 abuts against the groove bottom of the guide groove 12, so that the elastic member 40 can stretch and contract along the length direction of the guide groove 12 in the stretching and contracting process, avoiding the inclination of the elastic member 40 in the stretching and contracting process.

[0059] With reference to Figure 2 , the guide member 50 is connected with the mounting seat 10 and the probe assembly 20. The guide member 50 is connected with the probe assembly 20 after penetrating through the guide hole 12, so that the guide member 50 is arranged between the mounting seat 10 and the probe assembly 20.

[0060] The elastic element 40 in the compressed state provides elastic force to the probe assembly 20 after the arm support inner diameter weld joint detection device enters the hole to be detected, and then the wedge block 30 connected with the probe assembly 20 forms pressure with the inner wall of the hole to be detected, the pressure can reduce or eliminate the small gap between the wedge block 30 and the inner wall, improve the coupling of the arm support inner diameter weld joint detection device and the inner diameter to be detected, and reduce the loss of ultrasonic waves. And the pressure can also improve the contact state between the wedge block 30 and the inner wall, improve the transmissivity of ultrasonic waves between the two contact surfaces, improve the coupling of the arm support inner diameter weld joint detection device and the inner diameter to be detected, further reduce the loss of ultrasonic waves, and then improve the weld joint detection effect.

[0061] In some embodiments, as shown in Figure 6 The guide piece 50 has a connecting part 51 and a limiting part 52, the connecting part 51 is connected with the probe assembly 20, for example, the connecting part 51 can have external threads, so that the guide piece 50 is screwed with the probe assembly 20.

[0062] As shown in Figure 2 The guide hole 12 is a stepped hole with a stepped surface 121, the limiting part 51 is located in the guide hole 12, and the limiting part 51 is located on the stepped surface 121. For example, the limiting part 51 can abut on the stepped surface 121, and the limiting part 51 can also be located above the stepped surface 121. The diameter of the limiting part 51 is larger than the diameter of the small hole in the stepped hole, so as to avoid the guide piece 51 from sliding out of the guide hole 12.

[0063] On the basis of the above-mentioned embodiments, as shown in Figure 1 The limiting part 51 and the stepped surface 121 have a spacing. Compared with the limiting part 51 abutting on the stepped surface 121, the elongation stroke of the elastic element 40 in the compressed state can be increased, thereby further increasing the pressure between the wedge block 30 and the inner wall of the hole to be detected, further reducing the loss of ultrasonic waves, and then improving the weld joint detection effect.

[0064] The spacing between the limiting part 51 and the stepped surface 121 can be 1-3mm, for example, 1mm, 1.5mm, 2mm, 2.5mm or 3mm. From this setting, on the one hand, the elongation stroke of the elastic element 40 can be increased, and on the other hand, the instability of the connection between the mounting seat 10 and the probe assembly 20 can be reduced.

[0065] In some embodiments, the guide 50 is a bolt, which includes a screw head and a screw rod, the screw rod has a threaded part, which is the connecting part 52. The threaded part can be an external thread or an internal thread, which corresponds to the thread on the shell 21, so that the guide 50 is screwed with the shell 21, and the screw head can have a limiting part 51, for example, the diameter of the screw head as a whole or part is larger than the diameter of the guide hole 12, so as to prevent the guide 50 from sliding out of the guide hole 12. By setting the bolt as the guide 50, the cost is low, and the guide 50 is convenient to connect with the shell 21.

[0066] It should be noted that the guide 50 can be a plug bolt, which is a smooth cylindrical plug bolt, and the plug diameter of the plug bolt is larger than the threaded part. This design enables the plug bolt to provide accurate positioning and support, thereby improving the connection stability between the guide 50 and the shell 21 and the accuracy when the probe assembly 10 moves along the length direction of the guide 50.

[0067] Reference Figure 5 In some embodiments, the reference Figure 4 The probe assembly 20 can include a shell 21 and a chip assembly 22, wherein the shell 21 can be a square box, an approximately square box, a circular box or an approximately circular box. The chip assembly 22 is a component in the probe assembly 20 that emits ultrasonic waves, and the chip assembly 22 is located in the shell 21.

[0068] The chip assembly 22 includes a backing 221 and a wafer array 222, the wafer array 222 is arranged on the backing 221, and the wafer array 222 includes a plurality of wafers, which can be single crystal or polycrystalline thin slices with piezoelectric effect, and can convert electrical energy and acoustic energy into each other. The backing 221 is arranged on the side of the wafer array 222 away from the wedge 30, so that the backing 221 can absorb the ultrasonic waves emitted by each wafer towards the backing 221, thereby reducing the interference of the part of the ultrasonic waves, and further improving the ultrasonic gap detection effect.

[0069] In some embodiments, the minor axis length of each wafer in the wafer array 222 is 2-4 mm, for example, 2 mm, 3 mm or 4 mm. In this way, when the hole diameter of the to-be-tested hole is a small hole diameter, for example, the hole diameter of the to-be-tested hole is 40 mm, the arm inner diameter weld detection device can enter the to-be-tested hole, and a better ultrasonic sound field effect can be maintained.

[0070] In some embodiments, the reference Figure 6 The wedge 30 has an abutting surface 31, which is a circular arc surface, and the bending radius of the circular arc surface can be adjusted according to the hole diameter of the to-be-tested hole. Thus, the contact area between the wedge 30 and the to-be-tested surface of the to-be-tested inner diameter is increased, and the coupling between the arm inner diameter weld detection device and the to-be-tested inner diameter is further improved, so as to improve the weld detection effect.

[0071] In some embodiments, the referenceFigure 5 The shell 21 has at least one flow groove 211 for injecting potting glue into the shell 21 to seal and protect the chip assembly 22.

[0072] In some embodiments, referring to Figure 5 The shell 21 has a plurality of flow grooves 211, which are arranged at intervals along the length direction of the shell 21, so that the potting glue can flow into the shell 21 uniformly, and the potting glue is arranged uniformly in the shell 21, improving the packaging effect of the shell 21 and the chip assembly 22.

[0073] In some embodiments, referring to Figure 1 and Figure 2 The arm support inner diameter weld seam detection device further comprises a connecting line 60, which is signal connected with the chip assembly 22, one end of the connecting line 60 is connected into the shell 21 to connect the chip assembly 22, and the other end of the connecting line 60 can be externally connected with a signal source to provide a signal for the chip assembly 22.

[0074] In some embodiments, referring to Figure 1 and Figure 2 The arm support inner diameter weld seam detection device further comprises an adjusting rod 70, which is connected with the end of the mounting seat 10, and the specific connection mode can be threaded connection, welding or one-piece forming. The adjusting rod 70 can adjust the depth of the arm support inner diameter weld seam detection device in the hole to be detected. The adjusting rod 70 has a scale line on the outer periphery to show the depth of the detection device in the hole to be detected.

[0075] Each embodiment or implementation in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between each embodiment can be referred to each other.

[0076] It should be noted that the phrases "in a specific implementation", "in some embodiments", "in the present embodiment", "exemplarily" and the like in the specification mean that the described embodiments can include specific features, structures or characteristics, but not necessarily every embodiment includes the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, it is within the knowledge of those skilled in the art to realize such feature, structure or characteristic in combination with other embodiments described explicitly or implicitly.

[0077] In general, terminology can be understood at least in part from usage in context. For example, the term "one or more" as used herein, depending at least in part upon context, can be used to describe any feature, structure, or characteristic in a singular sense or can be used to describe combinations of features, structures or characteristics in a plural sense. Similarly, terms, such as "a" and "the", as used herein, depending at least in part upon context, can be understood to transmit singular usage or to transmit plural usage, unless otherwise indicated by the specific wording employed.

[0078] In addition, the terms "first", "second", and the like, do not denote any

[0079] In this application, unless otherwise indicated and / or unless otherwise clearly contradicted by context, the terms "mount", "connected", "coupled", "fixed", and the like, refer to any manner of mechanical, electrical, and / or magnetic coupling or mounting, for example, and can encompass use of mounts such as a carrier, spacer, and / or a bracket, or can be integral with respect to the element in which they are described. As such, the terms "connected", "coupled", "fixed", and the like, can mean the element is in direct contact and / or communication with another element, or can mean that the element is not in direct contact and / or communication with another element, based at least in part on the specific context in which the term is used. The term "fixed" can mean that an element is mounted or secured to another element such that at least one degree of relative movement between the elements is limited, but also can mean that the elements are fixed together such that there is no relative movement between the elements.

[0080] It will be readily understood that the terms "on", "above", and "on top of", as used herein, shall be interpreted to include not only the meaning of "directly on top of", but also the meaning of "on top of, with intervening features or layers", and that the terms "above" or "on top of", shall be interpreted to include not only the meaning of "on top of, without intervening features or layers" (i.e., directly on top of), but also the meaning of "on top of, with intervening features or layers".

[0081] In addition, spatially relative terms, such as "beneath", "below", "lower", "above", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0082] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An apparatus for detecting an inner diameter weld of a boom, characterized by, The utility model relates to a kind of probe installation seat, including: Mounting seat (10), the mounting seat (10) has guide slot (11) and guide hole (12) on it; Probe assembly (20), the probe assembly (20) is connected with the mounting seat (10); Wedge (30), the wedge (30) connects the probe assembly (20); Elastic member (40) in compression state, one end of the elastic member (40) is connected with the probe assembly (20), and the other end is abutted with the groove bottom of the guide slot (11); Guide piece (50), the guide piece (50) is connected with the probe assembly (20) after passing through the guide hole (12).

2. The jib inner diameter weld seam detection apparatus of claim 1, wherein, The guide piece (50) has connecting part (51) and limiting part (52); The connecting part (51) is connected with the probe assembly (20); The guide hole (12) is stepped hole, and the limiting part (52) is located on the step surface (121) of the stepped hole.

3. The jib inner diameter weld detection apparatus of claim 2, wherein, The limiting part (52) and the step surface (121) have spacing, and the spacing is 1-3mm.

4. The apparatus of any of claims 1-3, wherein, The probe assembly (20) includes shell (21) and chip assembly (22) in the shell (21); The chip assembly (22) includes backing (221) and wafer array (222), and the wafer array (222) is arranged on the backing (221).

5. The jib inner diameter weld detection apparatus of claim 4, wherein, The length of the secondary axis of each wafer in the wafer array (222) is 2-4mm.

6. The apparatus of any of claims 1-3, wherein, The wedge (30) has abutment surface (31), and the abutment surface (31) is circular arc curved surface.

7. The jib inner diameter weld detection apparatus of claim 4, wherein, The shell (21) has at least one drainage groove (211), and the drainage groove (211) is used for injecting pouring glue into the shell (21).

8. The jib inner diameter weld detection apparatus of claim 7, wherein, The shell (21) has a plurality of drainage grooves (211), and each drainage groove (211) is arranged along the length direction of the shell (21).

9. The apparatus of any of claims 1-3, wherein, Further including connecting wire (60), the connecting wire (60) is signal connected with the probe assembly (20).

10. The apparatus of any of claims 1-3, wherein, Further including adjusting rod (70), the adjusting rod (70) is connected with the end of the mounting seat (10), and the adjusting rod (70) has scale line (71).

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