A valve accessories crack detection device

Abstract

The present invention belongs to the technical field of valve detection, and discloses a valve accessory crack detection device, comprising a base plate, a first conveying mechanism for conveying valve accessories to be detected is arranged on the base plate, a support is installed on the base plate, a placement plate for placing the valve accessories to be detected is arranged on the base plate, and the upper end surface of the placement plate is flush with the upper end of the first conveying mechanism, the placement plate and the first conveying mechanism are coaxially placed and located at one end of the first conveying mechanism; a detection mechanism, the detection mechanism is arranged on the support, and the detection mechanism is located directly above the placement plate, and is used to detect the valve accessories on the placement table; the detection mechanism comprises a hanging plate, and two first telescopic cylinders placed vertically downward are rotatably clamped on the hanging plate; the detection head is automatically extended into the fluid channel of the valve accessory and rotates along the inner wall thereof, and the inner wall of the fluid channel of the valve accessory is fully scanned and detected, so as to realize automatic detection of the valve accessories, improve detection efficiency, and reduce labor intensity.

Description

Technical Field

[0001] The invention belongs to the technical field of valve detection, and in particular relates to a valve accessory crack detection device. Background Art

[0002] A valve is a control switch component for a fluid medium. Valve accessories are usually made of metal. During the processing of valve accessories, cracks are prone to occur inside. In order to ensure the normal use of the valve, crack detection is required for the processed valve accessories.

[0003] At present, most of the crack detection devices for valve accessories on the market are handheld mechanisms. When in use, the staff needs to hold the detection device, insert the detection head in the detection device into the fluid channel inside the valve accessory, and rotate along the inner wall of the fluid channel inside the valve accessory to make the detection head scan and detect the inner wall of the fluid channel of the valve accessory; but during the detection process, it is necessary to manually hold the detection device and drive the detection head to rotate in the fluid channel for scanning, there is a problem of insufficient scanning of the fluid channel of the valve accessory, which is prone to missed detection, and the detection process has low work efficiency and high labor intensity. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a valve accessory crack detection device, which solves the problem of insufficient scanning of the fluid channel of the valve accessory in the prior art, easy missed detection, low work efficiency and high labor intensity in the detection process.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A valve accessory crack detection device comprises a base plate, a first conveying mechanism for conveying the valve accessory to be detected is arranged on the base plate, a support is installed on the base plate, a placement plate for placing the valve accessory to be detected is arranged on the base plate, and the upper end surface of the placement plate is flush with the upper end of the first conveying mechanism, and the placement plate is coaxially placed with the first conveying mechanism and is located at one end of the first conveying mechanism.

[0007] The detection mechanism is arranged on the support member, and the detection mechanism is located directly above the placement plate, and is used to detect the valve accessories on the placement table; the detection mechanism includes a hanging plate, and two first telescopic cylinders placed vertically downward are rotatably clamped on the hanging plate, and the two first telescopic cylinders are arranged along the conveying direction of the first conveying mechanism. The lower ends of the first telescopic cylinders are connected to horizontally placed telescopic components, and the other ends of the telescopic components are fixed with detection heads. The hanging plate is provided with a first driving unit for driving the two first telescopic cylinders to rotate.

[0008] The clamping mechanism is arranged between the base plate and the detection mechanism. The clamping mechanism includes a movable plate. The movable plate is provided with two clamping units for stably clamping the valve accessories. The two clamping units are arranged along the conveying direction of the first conveying mechanism, and the distance between the two clamping units is equal to the distance between the two first telescopic cylinders.

[0009] The adjusting mechanism is arranged on the bottom plate and connected to the movable plate. The adjusting mechanism is used to drive the clamping mechanism to move in a horizontal plane along the conveying direction of the first conveying mechanism or perpendicular to the conveying direction of the first conveying mechanism.

[0010] The telescopic components all include a fixed block fixed to the lower end of the output end of the first telescopic cylinder, one end of the fixed block is fixed with a horizontally placed first telescopic rod, and the detection head is fixed to one end of the first telescopic rod away from the fixed block.

[0011] The first telescopic rods are sleeved with first springs, both ends of the first springs are respectively fixed to the fixing block and the detection head, and the first springs are always in a compressed state.

[0012] The interior of the first telescopic rod is hollow, and the fixed block is provided with a circular through hole connected to the interior of the first telescopic rod. The fixed block is provided with a mounting groove, and a first rotating motor is fixed on the mounting groove. The output end of the first rotating motor is provided with a first rotating shaft coaxially placed with the first telescopic rod, and a winding wheel is fixedly sleeved on the first rotating shaft. A pull rope is provided in the first telescopic rod, one end of the pull rope is fixed to the detection head, and the other end of the pull rope passes through the circular through hole and is fixed to the peripheral wall of the winding wheel.

[0013] The first driving unit includes a first gear roller, which is fixedly sleeved on the circumferential wall of the cylinder body of any first telescopic cylinder, and a second gear is fixedly sleeved on the circumferential wall of the cylinder body of the other first telescopic cylinder. A second gear is rotatably connected to the hanging plate, and the upper end of the second gear roller is meshed with the second gear. An annular synchronous belt is sleeved between the lower end of the second gear roller and the first gear roller, and the diameters and the number of teeth of the first gear roller, the second gear roller and the second gear are equal. A second rotating motor that drives the second gear roller to rotate is installed at the lower end of the hanging plate.

[0014] The movable plate is provided with a pair of slide grooves which are coaxially arranged with the conveying direction of the first conveying mechanism.

[0015] The clamping units include a first sliding member and a second sliding member. The lower end of the first sliding member is slidably engaged with any sliding groove, and the lower end of the second sliding member is slidably engaged with another sliding groove. Clamps are fixed on the first sliding member and the second sliding member, and the two clamps in the same clamping unit are provided with isosceles triangle-shaped grooves on one side close to each other.

[0016] The moving plate is provided with a second driving unit, and the second driving unit is used for driving the two clamping plates in the clamping unit to move closer to or farther away from each other.

[0017] The second driving unit includes a first connecting rod and a second connecting rod arranged directly above the movable plate. The first connecting rod and the second connecting rod are both placed coaxially with the slide groove. The first sliding member is fixedly mounted on the first connecting rod, and the second sliding member is fixedly mounted on the second connecting rod. The movable plate is provided with a second telescopic cylinder that drives the first connecting rod to move along the axial direction of the slide groove.

[0018] A vertically placed first gear is rotatably connected to the movable plate, the first gear is located between the first connecting rod and the second connecting rod, and tooth grooves are provided on one side of the first connecting rod and the second connecting rod close to the first gear, and the tooth grooves on the first connecting rod and the second connecting rod are both engaged with the first gear.

[0019] The adjustment mechanism includes a pair of first slide rails fixed on the base plate, the first slide rails are placed coaxially with the conveying direction of the first conveying mechanism, the two first slide rails are provided with a sliding table for sliding engagement, and the base plate is installed with a third telescopic cylinder for driving the slide table to move along the axis direction of the first slide rails.

[0020] A pair of symmetrically placed second slide rails are fixed on the upper end of the slide, the second slide rails are vertically placed with the first slide rails, the lower ends of the movable plates are slidably engaged with the second slide rails, and a fourth telescopic cylinder is installed on the slide to drive the movable plate to move along the axis of the second slide rails.

[0021] The placement plate and the bottom plate are fixedly connected by a plurality of vertically placed second telescopic rods, each of which is sleeved with a second spring, and two ends of the second spring are respectively fixed to the placement plate and the bottom plate.

[0022] A second conveying mechanism is arranged on the bottom plate and is placed vertically with the first conveying mechanism. One end of the second conveying mechanism is located at an end of the placement plate away from the first conveying mechanism. A third rotating motor is fixedly installed on the side wall of the second conveying mechanism. A second rotating shaft is placed vertically upward at the output end of the third rotating motor. A shift rod is fixedly sleeved on the second rotating shaft, and the lower end surface of the shift rod is located above the second conveying mechanism.

[0023] Beneficial effects of the present invention:

[0024] The present invention uses the coordinated arrangement of the first conveying mechanism, the placement plate, the support member, the hanging plate, the first telescopic cylinder, the telescopic assembly, the detection head, the first driving unit, the clamping mechanism, and the adjusting mechanism to enable the detection head to automatically extend into the fluid channel of the valve accessory and rotate along the inner wall thereof, so as to fully scan and detect the inner wall of the fluid channel of the valve accessory, thereby realizing automatic detection of the valve accessory, improving detection efficiency, reducing labor intensity, and performing the first detection and the second detection on any valve accessory at the same time, thereby avoiding the problem of missed crack detection and improving detection accuracy;

[0025] At the same time, the valve accessories that have completed the inspection are discharged in time to improve the continuity of the inspection process;

[0026] 2. The present invention realizes the purpose of automatically adjusting the distance between the detection head and the central axis of the first telescopic cylinder during detection by coordinating the fixed block, the first telescopic rod, the first spring, the first rotating motor, the winding wheel, and the pull rope, so that the detection head fits the fluid channel of the valve accessory;

[0027] The present invention is particularly suitable for testing reducing valve accessories such as reducing valves and throttle valves, whose internal fluid passage diameters change gradually. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the overall structure of the present invention from different viewing angles;

[0031] Figure 3 It is a partial structural schematic diagram of the present invention;

[0032] Figure 4 It is a partial schematic diagram of the clamping mechanism and the adjusting mechanism of the present invention;

[0033] Figure 5 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0034] Figure 6 It is a schematic diagram of the structure of the detection mechanism of the present invention;

[0035] Figure 7 It is a partial structural schematic diagram of the first telescopic rod of the present invention. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] like Figures 1 to 7 As shown, a valve accessory crack detection device comprises:

[0038] A bottom plate 1, on which a first conveying mechanism 2 for conveying valve accessories to be inspected is disposed, a support member 3 is installed on the bottom plate 1, and a placement plate 4 for placing valve accessories to be inspected is disposed on the bottom plate 1, and the upper end surface of the placement plate 4 is flush with the upper end of the first conveying mechanism 2, and the placement plate 4 is coaxially placed with the first conveying mechanism 2 and is located at one end of the first conveying mechanism 2;

[0039] The detection mechanism is arranged on the support member 3, and the detection mechanism is located just above the placement plate 4, and is used to detect the valve accessories on the placement table; the detection mechanism includes a hanging plate 51, and two first telescopic cylinders 52 placed vertically downward are rotatably clamped on the hanging plate 51, and the two first telescopic cylinders 52 are arranged along the conveying direction of the first conveying mechanism 2. The lower ends of the first telescopic cylinders 52 are connected to horizontally placed telescopic components, and the other ends of the telescopic components are fixed with detection heads 53. The hanging plate 51 is provided with a first driving unit for driving the two first telescopic cylinders 52 to rotate;

[0040] The clamping mechanism 6 is arranged between the bottom plate 1 and the detection mechanism, and the clamping mechanism 6 includes a moving plate 61, on which two clamping units for stably clamping the valve fittings are arranged, the two clamping units are arranged along the conveying direction of the first conveying mechanism 2, and the distance between the two clamping units is equal to the distance between the two first telescopic cylinders 52;

[0041] The adjusting mechanism 7 is arranged on the bottom plate 1, the adjusting mechanism 7 is connected to the moving plate 61, and the adjusting mechanism 7 is used to drive the clamping mechanism 6 to move in a horizontal plane along the conveying direction of the first conveying mechanism 2 or perpendicular to the conveying direction of the first conveying mechanism 2;

[0042] The valve parts to be tested are placed on the first conveying mechanism 2, and are sequentially conveyed to a position close to the placement plate 4 by the first conveying mechanism 2; the steps of testing by the device are as follows:

[0043] Step 1: When any valve accessory moves close to the placement plate 4, the clamping mechanism 6 is driven to move by the adjusting mechanism 7, and the clamping unit on the clamping mechanism 6 is cooperated to make the clamping unit close to the first conveying mechanism 2 clamp and fix the valve accessory, and then the adjusting mechanism 7 drives the clamping mechanism 6 to adjust the position in the horizontal plane, so that the clamped valve accessory moves to just below the first telescopic cylinder 52 close to the end of the first conveying mechanism 2, and keeps the fluid channel inside the valve accessory coaxial with the first telescopic cylinder 52; then open the first telescopic cylinder 52, the first telescopic cylinder 52 drives the telescopic assembly and the detection head 53 to move downward, when the detection head 53 extends into the fluid channel of the valve accessory, open the first driving unit, and drive the first telescopic cylinder 52, the telescopic assembly and the detection head 53 to rotate through the first driving unit, so that the detection head 53 rotates around the central axis of the fluid channel inside the valve accessory, and cooperates with the first telescopic cylinder 52 to drive the telescopic assembly and the detection head 53 to move downward, so as to realize the first detection of cracks on the inner wall of the fluid channel of the valve accessory;

[0044] For the convenience of description of this embodiment, in the initial state, the clamping unit close to the first conveying mechanism 2 is named as the clamping unit 1, and the clamping unit far from the first conveying mechanism 2 is named as the detection unit 2;

[0045] Step 2: When any valve accessory completes the first inspection, the clamping unit 1 releases the clamping of the valve accessory, and drives the clamping mechanism 6 through the adjustment mechanism 7, first driving the clamping mechanism 6 away from the placement plate 4 perpendicular to the conveying direction of the first conveying mechanism 2, and then driving the clamping mechanism 6 along the conveying direction of the first conveying mechanism 2 to approach the first conveying mechanism 2, so that the clamping unit 2 is opposite to the valve accessory;

[0046] Step 3: Then, when another valve part on the first conveying mechanism 2 is conveyed to the placement plate 4, the adjusting mechanism 7 drives the clamping mechanism 6 to move in a direction perpendicular to the placement plate 4 and approach the first conveying mechanism 2, so that the clamping unit 1 clamps and fixes the newly conveyed valve part, and the clamping unit 2 clamps the valve part that has completed the first inspection;

[0047] Step 4: The clamping mechanism 6 is driven to move again by the adjusting mechanism 7, so that the valve parts clamped by the clamping unit 1 and the clamping unit 2 are respectively placed coaxially with the two first telescopic cylinders 52, and then the valve parts on the placement table far from the first conveying mechanism 2 are subjected to a secondary inspection through the expansion and contraction of the first telescopic cylinder 52 and the cooperation of the first driving unit, and the valve parts on the placement table close to the first conveying mechanism 2 are subjected to a primary inspection at the same time;

[0048] Step 5: Drive the adjusting mechanism 7 to drive the clamping mechanism 6 and the two valve accessories to move along the axis direction of the placement plate 4, so that the valve accessories that have completed the secondary inspection are removed from the placement plate 4, and then release the clamping unit on the two valve accessories, so that the valve accessories that have completed the secondary inspection fall from the placement plate 4, while the valve accessories that have only completed the first inspection continue to remain on the placement plate 4; and then through the cooperation of the adjusting mechanism 7 and the clamping mechanism 6, the valve accessories that have only completed the first inspection on the placement plate 4 and the clamping mechanism 6 are in the position relationship at the end of step 2;

[0049] Then repeat steps 3 to 5 to realize automatic inspection of valve accessories, improve inspection efficiency, reduce labor intensity, and perform initial inspection and secondary inspection on any valve accessories at the same time to avoid the problem of missed crack inspection and improve the accuracy of inspection; at the same time, the valve accessories that have completed the inspection are discharged in time to improve the continuity of the inspection process.

[0050] In order to facilitate the detection of valve accessories with various diameters, the telescopic components include a fixed block 541 fixed to the lower end of the output end of the first telescopic cylinder 52, a horizontally placed first telescopic rod 542 is fixed to one end of the fixed block 541, and the detection head 53 is fixed to the end of the first telescopic rod 542 away from the fixed block 541; before the detection, the first telescopic rod 542 is squeezed and compressed to move the detection head 53 toward the end of the fixed block 541, and the distance between the detection head 53 and the central axis of the first telescopic cylinder 52 is adjusted so that the distance between the detection head 53 and the central axis of the first telescopic cylinder 52 is equal to the radius of the internal fluid channel of the valve accessory to be detected, so as to facilitate the detection of valve accessories with various diameters.

[0051] In order to facilitate automatic adjustment of the distance between the detection head 53 and the central axis of the first telescopic cylinder 52 during detection, a first spring 543 is sleeved on the first telescopic rod 542, and both ends of the first spring 543 are respectively fixed to the fixing block 541 and the detection head 53, and the first spring 543 is always in a compressed state;

[0052] The first telescopic rod 542 is hollow inside, and the fixed block 541 is provided with a round hole connected to the inside of the first telescopic rod 542, and the fixed block 541 is provided with a mounting groove, and a first rotating motor 544 is fixed on the mounting groove, and the output end of the first rotating motor 544 is provided with a first rotating shaft coaxially placed with the first telescopic rod 542, and a winding wheel 545 is fixedly sleeved on the first rotating shaft, and a pull rope 546 is provided in the first telescopic rod 542, and one end of the pull rope 546 is fixed to the detection head 53, and the other end of the pull rope 546 passes through the round hole and is fixed to the peripheral wall of the winding wheel 545;

[0053] Before the detection head 53 is extended into any valve accessory fluid channel, the first rotating motor 544 is turned on first, and the output end of the first rotating motor 544 drives the first rotating shaft and the winding wheel 545 in sequence, and the winding wheel 545 drives the pull rope 546 to be wound, so that the detection head 53 squeezes and compresses the first spring 543 and approaches the fixed block 541 end. When the detection head 53, i.e., the first telescopic rod 542, is extended into the valve accessory fluid channel, the output end of the first rotating motor 544 rotates in the opposite direction, so that the pull rope 546 is fully relaxed, and under the elastic force of the first spring 543, the first spring 543 pushes the detection head 53 away from the central axis of the first telescopic cylinder 52, so that the detection head 53 fits the valve accessory fluid channel, so as to achieve the purpose of automatically adjusting the distance between the detection head 53 and the central axis of the first telescopic cylinder 52 when facilitating detection;

[0054] The present invention is particularly suitable for testing reducing valve accessories such as reducing valves and throttle valves, whose internal fluid passage diameters gradually change;

[0055] Preferably, the first telescopic rod 542 can be a multi-stage telescopic rod, so as to increase the maximum compression amount of the first telescopic rod 542, so as to increase the diameter range of the fluid channel of the valve accessory that can be detected by the device.

[0056] Since cracks inside the fluid channel of the valve accessory may appear in different positions and forms, the cracks may be distributed linearly or nonlinearly, and there may be multiple crack tips, or when there are impurities in the fluid pipeline, the rotation direction of the detection head 53 in the fluid pipeline will have a certain impact on the detection structure. Therefore, in order to reduce the possibility of missed detection or misjudgment, the rotation direction of the detection head 53 in the flow channel of the valve accessory should be opposite to that of the first detection during the secondary detection. In order to facilitate the above purpose, the first driving unit includes a first gear roller 551, and the first gear roller 551 is fixedly sleeved on the circumferential wall of the cylinder body of any first telescopic cylinder 52, and a second gear 552 is fixedly sleeved on the circumferential wall of the cylinder body of the other first telescopic cylinder 52, and a second gear roller 553 rotatably connected is provided on the hanging plate 51, and the upper end of the second gear roller 553 is connected to the second gear 552. Meshing, an annular synchronous toothed belt 554 is sleeved between the lower end of the second gear roller 553 and the first gear roller 551, and the diameters and the number of teeth of the first gear roller 551, the second gear roller 553 and the second gear 552 are equal, and a second rotating motor that drives the second gear roller 553 to rotate is installed at the lower end of the hanging plate 51; turn on the second rotating motor, the second rotating motor drives the second gear roller 553, the second gear roller 553 drives the first gear 634 and the annular synchronous toothed belt 554, the annular synchronous toothed belt 554 moves and drives the first gear roller 551, so that the first gear roller 551 and the first gear 634 keep synchronous and reverse rotation, the first gear 634 and the first gear roller 551 drive the corresponding first telescopic rod 542, the telescopic assembly, and the detection head 53, so that the rotation direction of the detection head 53 is opposite during the first detection and the second detection, reducing the possibility of missed detection or misjudgment.

[0057] In order to facilitate the clamping of the valve accessories, a pair of slide grooves 611 are provided on the movable plate 61 and are coaxially arranged with the conveying direction of the first conveying mechanism 2;

[0058] The clamping units each include a first sliding member 621 and a second sliding member 622. The lower end of the first sliding member 621 is slidably engaged with any one of the slide grooves 611, and the lower end of the second sliding member 622 is slidably engaged with the other slide groove 611. Clamping plates 623 are fixed on the first sliding member 621 and the second sliding member 622. A groove in the shape of an isosceles triangle is provided on one side of the two clamping plates 623 close to each other in the same clamping unit.

[0059] The moving plate 61 is provided with a second driving unit, and the second driving unit is used to drive the two clamping plates 623 in the clamping unit to move closer to or away from each other;

[0060] The second driving unit drives the two clamping plates 623 in the clamping unit to move closer to or farther from each other, thereby clamping or releasing the valve fittings;

[0061] At the same time, the setting of the isosceles triangle groove on the clamping plate 623 facilitates the centering clamping of the valve accessories. When the two clamping plates 623 clamp the valve accessories, the intersection of the symmetry planes of the two clamping plates 623 and the symmetry plane of any isosceles triangle groove is the position of the central axis of the fluid channel of the valve accessory after clamping.

[0062] In order to facilitate the automatic control of driving the two clamping plates 623 in the clamping unit to move closer to or away from each other, the second driving unit includes a first connecting rod 631 and a second connecting rod 632 arranged just above the moving plate 61, the first connecting rod 631 and the second connecting rod 632 are both coaxially placed with the slide groove 611, the first sliding member 621 is fixedly sleeved on the first connecting rod 631, the second sliding member 622 is fixedly sleeved on the second connecting rod 632, and the moving plate 61 is provided with a second telescopic cylinder 633 that drives the first connecting rod 631 to move along the axial direction of the slide groove 611;

[0063] A vertically placed first gear 634 is rotatably connected to the moving plate 61. The first gear 634 is located between the first connecting rod 631 and the second connecting rod 632. A tooth groove 635 is provided on one side of the first connecting rod 631 and the second connecting rod 632 close to the first gear 634. The tooth grooves 635 on the first connecting rod 631 and the second connecting rod 632 are meshed with the first gear 634.

[0064] The second telescopic cylinder 633 is turned on, and the second telescopic cylinder 633 drives the first connecting rod 631 to move along the axial direction of the slide groove 611. The tooth groove 635 on the first connecting rod 631 drives the first gear 634. The first gear 634 drives the second connecting rod 632 through the tooth groove 635 on the second connecting rod 632, so that the first connecting rod 631 and the second connecting rod 632 maintain synchronous and opposite movement. The first connecting rod 631 drives the first sliding member 621, and the second connecting rod 632 drives the second sliding member 622. The first sliding member 621 and the second sliding member 622 drive the corresponding clamping plates 623, so that the two clamping plates 623 in any clamping unit move closer to or away from each other, thereby realizing automatic control that facilitates driving the two clamping plates 623 in the clamping unit to move closer to or away from each other.

[0065] In order to facilitate the position adjustment of the clamping mechanism 6, the adjustment mechanism 7 includes a pair of first slide rails 71 fixed on the bottom plate 1, and the first slide rails 71 are coaxially placed with the conveying direction of the first conveying mechanism 2. A slide table 72 for sliding engagement is provided on the two first slide rails 71, and a third telescopic cylinder 73 for driving the slide table 72 to move along the axial direction of the first slide rail 71 is installed on the bottom plate 1;

[0066] A pair of symmetrically placed second slide rails 74 are fixed to the upper end of the slide 72. The second slide rails 74 are vertically placed with the first slide rails 71. The lower ends of the moving plates 61 are slidably engaged with the second slide rails 74. A fourth telescopic cylinder 75 for driving the moving plate 61 to move along the axis of the second slide rails 74 is installed on the slide 72.

[0067] By cooperating with the third telescopic cylinder 73 and the fourth telescopic cylinder 75 , the purpose of facilitating the position adjustment of the clamping mechanism 6 in the horizontal plane is achieved.

[0068] In order to facilitate the detection of the fluid channel of the valve accessory near the end of the placement plate 4, the placement plate 4 and the base plate 1 are fixedly connected by a plurality of vertically placed second telescopic rods 81, and the second telescopic rods 81 are each sleeved with a second spring 82, and the two ends of the second spring 82 are respectively fixed to the placement plate 4 and the base plate 1; when the detection head 53 moves down to the end of the valve accessory near the placement plate 4, the first telescopic cylinder 52 drives the telescopic assembly and the detection head 53 to move downward, so that the fixed block 541 pushes the placement plate 4 to squeeze and compress the second spring 82 to move downward, and at the same time cooperates with the clamping unit to clamp the valve accessory, so that the valve accessory is separated from the placement plate 4, so as to facilitate the detection of the fluid channel of the valve accessory near the end of the placement plate 4.

[0069] In order to separately collect the qualified valve accessories, a second conveying mechanism 9 is arranged on the bottom plate 1 and is placed vertically with the first conveying mechanism 2. One end of the second conveying mechanism 9 is located at the end of the placement plate 4 away from the first conveying mechanism 2. A third rotating motor 10 is fixedly installed on the side wall of the second conveying mechanism 9. The output end of the third rotating motor 10 is provided with a second rotating shaft placed vertically upward. A lever 11 is fixedly sleeved on the second rotating shaft. The lower end surface of the lever 11 is located above the second conveying mechanism 9.

[0070] Preferably, the third rotating motor 10 is controlled by a PLC controller. When cracks are detected in either the first inspection or the second inspection, the third rotating motor 10 is turned on and drives the lever 11 to rotate, so that unqualified valve accessories are pushed off the second conveying mechanism 9; valve accessories that are found to be free of cracks are conveyed by the second conveying mechanism 9 for separate collection.

[0071] Preferably, the first conveying mechanism 2 and the second conveying mechanism 9 may be roller conveyors or belt conveyors.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0073] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A valve fitting crack detection device, characterized in that: include: A base plate (1), a first conveying mechanism (2) for conveying valve accessories to be inspected is arranged on the base plate (1), a support member (3) is installed on the base plate (1), a placement plate (4) for placing the valve accessories to be inspected is arranged on the base plate (1), and the upper end surface of the placement plate (4) is flush with the upper end of the first conveying mechanism (2), and the placement plate (4) and the first conveying mechanism (2) are coaxially arranged and located at one end of the first conveying mechanism (2); The detection mechanism is arranged on the support member (3) and is located directly above the placement plate (4), and is used to detect the valve accessories on the placement table; the detection mechanism comprises a hanging plate (51), and two first telescopic cylinders (52) placed vertically downward are rotatably clamped on the hanging plate (51), the two first telescopic cylinders (52) are arranged along the conveying direction of the first conveying mechanism (2), the lower ends of the first telescopic cylinders (52) are connected to horizontally placed telescopic components, and the other ends of the telescopic components are fixed with detection heads (53), and a first driving unit for driving the two first telescopic cylinders (52) to rotate is arranged on the hanging plate (51); A clamping mechanism (6), the clamping mechanism (6) being arranged between the base plate (1) and the detection mechanism, the clamping mechanism (6) comprising a movable plate (61), the movable plate (61) being provided with two clamping units for stably clamping the valve fitting, the two clamping units being arranged along the conveying direction of the first conveying mechanism (2), and the distance between the two clamping units being equal to the distance between the two first telescopic cylinders (52); An adjusting mechanism (7), the adjusting mechanism (7) being arranged on the bottom plate (1), the adjusting mechanism (7) being connected to the movable plate (61), and the adjusting mechanism (7) being used to drive the clamping mechanism (6) to move in a horizontal plane along a conveying direction of the first conveying mechanism (2) or perpendicular to the conveying direction of the first conveying mechanism (2); The telescopic components all comprise a fixed block (541) fixed to the lower end of the output end of the first telescopic cylinder (52), a first telescopic rod (542) placed horizontally is fixed to one end of the fixed block (541), and the detection head (53) is fixed to one end of the first telescopic rod (542) away from the fixed block (541); The first telescopic rods (542) are sleeved with first springs (543), both ends of the first springs (543) are respectively fixed to the fixing block (541) and the detection head (53), and the first springs (543) are always in a compressed state; The first telescopic rod (542) is hollow inside, the fixed block (541) is provided with a circular through hole connected to the inside of the first telescopic rod (542), the fixed block (541) is provided with a mounting groove, a first rotating motor (544) is fixed to the mounting groove, the output end of the first rotating motor (544) is provided with a first rotating shaft coaxially arranged with the first telescopic rod (542), a winding wheel (545) is fixedly sleeved on the first rotating shaft, a pull rope (546) is provided inside the first telescopic rod (542), one end of the pull rope (546) is fixed to the detection head (53), and the other end of the pull rope (546) passes through the circular through hole and is fixed to the peripheral wall of the winding wheel (545); The first driving unit comprises a first gear roller (551), the first gear roller (551) is fixedly sleeved on the cylinder body peripheral wall of any first telescopic cylinder (52), a second gear (552) is fixedly sleeved on the cylinder body peripheral wall of the other first telescopic cylinder (52), a second gear roller (553) is rotatably connected to the hanging plate (51), the upper end of the second gear roller (553) is meshed with the second gear (552), an annular synchronous gear belt (554) is sleeved between the lower end of the second gear roller (553) and the first gear roller (551), and the diameters and the number of teeth of the first gear roller (551), the second gear roller (553) and the second gear (552) are all equal, and a second rotating motor for driving the second gear roller (553) to rotate is installed at the lower end of the hanging plate (51); The movable plate (61) is provided with a pair of slide grooves (611) which are coaxially arranged with respect to the conveying direction of the first conveying mechanism (2); The clamping units each comprise a first sliding member (621) and a second sliding member (622); the lower end of the first sliding member (621) is slidably engaged with any one of the slide grooves (611); the lower end of the second sliding member (622) is slidably engaged with the other slide groove (611); a clamping plate (623) is fixed on the first sliding member (621) and the second sliding member (622); and two clamping plates (623) in the same clamping unit are provided with a groove in the shape of an isosceles triangle on one side close to each other; A second driving unit is provided on the movable plate (61), and the second driving unit is used to drive the two clamping plates (623) in the clamping unit to move closer to or farther from each other; The adjustment mechanism (7) comprises a pair of first slide rails (71) fixed on the bottom plate (1), the first slide rails (71) are arranged coaxially with the conveying direction of the first conveying mechanism (2), a slide table (72) for sliding engagement is provided on the two first slide rails (71), and a third telescopic cylinder (73) for driving the slide table (72) to move along the axial direction of the first slide rails (71) is installed on the bottom plate (1); A pair of symmetrically placed second slide rails (74) are fixed to the upper end of the slide table (72), the second slide rails (74) are vertically placed with the first slide rails (71), the lower ends of the movable plates (61) are slidably engaged with the second slide rails (74), and a fourth telescopic cylinder (75) is installed on the slide table (72) for driving the movable plate (61) to move along the axis direction of the second slide rails (74); The placement plate (4) and the bottom plate (1) are fixedly connected via a plurality of vertically placed second telescopic rods (81), each of the second telescopic rods (81) being sleeved with a second spring (82), and the two ends of the second spring (82) are respectively fixed to the placement plate (4) and the bottom plate (1).

2. A valve accessory crack detection device according to claim 1, characterized in that: The second driving unit comprises a first connecting rod (631) and a second connecting rod (632) which are arranged directly above the moving plate (61); the first connecting rod (631) and the second connecting rod (632) are both coaxially arranged with the slide groove (611); the first sliding member (621) is fixedly sleeved on the first connecting rod (631); the second sliding member (622) is fixedly sleeved on the second connecting rod (632); and a second telescopic cylinder (633) is provided on the moving plate (61) for driving the first connecting rod (631) to move along the axis direction of the slide groove (611); A first gear (634) placed vertically is rotatably connected to the movable plate (61); the first gear (634) is located between the first connecting rod (631) and the second connecting rod (632); a tooth groove (635) is provided on one side of the first connecting rod (631) and the second connecting rod (632) close to the first gear (634); the tooth grooves (635) on the first connecting rod (631) and the second connecting rod (632) are meshed with the first gear (634).

3. A valve accessory crack detection device according to claim 1, characterized in that: A second conveying mechanism (9) is arranged on the bottom plate (1) and is placed vertically with respect to the first conveying mechanism (2). One end of the second conveying mechanism (9) is located at an end of the placement plate (4) away from the first conveying mechanism (2). A third rotating motor (10) is fixedly mounted on a side wall of the second conveying mechanism (9). A second rotating shaft placed vertically upward is arranged at the output end of the third rotating motor (10). A shifting rod (11) is fixedly sleeved on the second rotating shaft. The lower end surface of the shifting rod (11) is located above the second conveying mechanism (9).

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