Pipeline reducing detection device

Abstract

The invention provides a pipeline reducing detection device, and belongs to the technical field of pipeline detection, the pipeline reducing detection device comprises a fixed chassis and a movable chassis, the fixed chassis is provided with a lifting mechanism, and the lifting mechanism comprises a first screw rod, a first motor, a lifting disc and a first bevel gear set; a lifting disc is installed on the movable chassis, a plurality of telescopic mechanisms are installed on the side edge of the lifting disc in a circumferential distribution mode, each telescopic mechanism comprises a fixing block, a contact piece, a T-shaped block and a compression spring, and an infrared transmitter and an infrared receiver are installed in each fixing block. Through a compression spring of the telescopic mechanism, the contact piece can make contact with the inner wall of the pipeline all the time, the distance between the unique variable infrared transmitter and the infrared receiver is detected, when the unique variable is changed, it is represented that the diameter of the inner wall of the pipeline changes, the normal use diameter range value of the pipeline can be detected more accurately, and the detection accuracy is improved. And determining whether the measured pipeline is a qualified product or not.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of pipeline detection, and in particular to a pipeline diameter change detection device. Background Art

[0002] Pipelines have a wide range of applications, mainly in petrochemicals, urban water supply and drainage, natural gas transmission and distribution, nuclear engineering, shipping and aviation. After the production of pipelines is completed, their inner wall and inner diameter need to be inspected, and a detection device is required to detect the inner wall and inner diameter of the pipeline.

[0003] After the pipeline is produced, it is necessary not only to inspect the inner wall conditions of pipelines of different diameters, but also to measure the range of diameters that can be normally used for the pipeline to determine whether the quality of the pipeline is qualified. During the production of the pipeline, the normal use diameter of the pipeline has a range of values, which are measured by the detection device to determine whether the pipeline can be used for actual applications. Some existing pipeline detection devices can only take pictures of the inner wall of the pipeline to identify whether the pipeline has defects, but cannot detect the range of diameters that can be normally used for the pipeline, resulting in an inability to determine whether the measured pipeline is qualified. Summary of the invention

[0004] The present invention mainly provides a pipeline diameter change detection device to solve the technical problems raised in the above background technology.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A pipeline variable diameter detection device comprises a fixed chassis, a mobile chassis and a detection platform, wherein a lifting mechanism is installed on the fixed chassis, wherein the lifting mechanism comprises a first screw rod rotatably connected to the center of the fixed chassis, a first motor installed on the fixed chassis, and a lifting plate slidably installed on the first screw rod, wherein a first bevel gear set is installed on the output shaft of the first motor and the bottom of the first screw rod, and the mobile chassis is installed on the outside of the lifting plate;

[0007] A plurality of telescopic mechanisms are installed on the side of the lifting plate in a circular distribution, and the telescopic mechanism includes a fixed block and a contact piece fixedly installed on the side of the mobile chassis. A slot with an opening width smaller than the internal width is arranged on the outer side of the fixed block. A T-block is installed at one end of the contact piece, and one end of the T-block is located inside the fixed block. Two compression springs are installed in the fixed block. An infrared transmitter is installed at the innermost part of the fixed block, and an infrared receiver is installed at one end of the inner part of the T-block. The positions of the infrared transmitter and the infrared receiver correspond to each other.

[0008] Furthermore, in the present invention, the lifting mechanism also includes guide rods installed on both sides of the first screw rod, the two guide rods both penetrate the lifting plate, and the tops of the first screw rod and the two guide rods are provided with limiting plates.

[0009] Furthermore, in the present invention, a protective cover is installed on one side of the fixed chassis through fixing bolts, the first motor and the first bevel gear set are both located inside the protective cover, the protective cover is composed of two identical semicircular covers, and the first screw rod and guide rod both pass through the protective cover.

[0010] Further, in the present invention, the lifting plate and the moving chassis are rotatably connected via a bearing, and a rotating mechanism is also installed in the moving chassis and the lifting plate area;

[0011] The rotating mechanism includes an internal gear plate installed on the top of the mobile chassis and located at the connection with the lifting plate, a second motor and a transmission gear installed on the lifting plate, the transmission gear is rotatably connected to the lifting plate and meshes with the internal gear plate, and a second bevel gear set is installed on the output shaft of the second motor and the top of the transmission gear.

[0012] Furthermore, in the present invention, the contact element is a spherical pair structure.

[0013] Furthermore, in the present invention, the telescopic mechanism also includes two straight shafts installed on both sides of the interior of the fixed block, the two compression springs are respectively sleeved on the two straight shafts, and the two straight shafts both pass through the T-block.

[0014] Furthermore, in the present invention, a U-shaped handle is installed on a side of the fixed chassis away from the lifting mechanism.

[0015] Furthermore, in the present invention, a plurality of slide rail grooves are provided on the side of the fixed chassis in a circumferential distribution, and a driving cavity is provided on the fixed chassis between the plurality of slide rail grooves;

[0016] A clamping mechanism is installed in the fixed chassis, and the clamping mechanism is installed in the third motor at the bottom center of the fixed chassis, which rotates the multiple second screw rods connected to the multiple slide rail grooves and penetrating into the driving cavity, respectively, and slide rail blocks slidably installed on the second screw rods, and an L-shaped clamping plate is installed on the outside of the slide rail block. The output shaft of the third motor and one end of the inner side of the multiple second screw rods are installed with a third bevel gear set.

[0017] Furthermore, in the present invention, a rubber pad is embedded and installed on one side of the L-shaped clamping plate close to the fixed chassis.

[0018] Furthermore, in the present invention, the number of telescopic mechanisms on the lifting plate and the number of slide rail grooves on the fixed chassis are both three.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention can realize the linear operation of the mobile chassis in the pipeline through the lifting mechanism, and the contact piece can be kept in contact with the inner wall of the pipeline at all times through the compression spring of the telescopic mechanism, so that the only variable, the distance between the infrared transmitter and the infrared receiver, is detected when the distance between other components is fixed. When the only variable changes, it means that the diameter of the inner wall of the pipeline at that location changes. When the change is too large, the detection station records the information at that location, and can more accurately detect the normal use diameter range value of the pipeline to determine whether the measured pipeline is a qualified product.

[0021] The present invention can realize relative rotation between the movable chassis and the lifting plate through the rotating mechanism, so that the contact pieces of the telescopic mechanism rotate during the linear movement, so that multiple contact pieces can more comprehensively cover the inner wall of the contact pipe, comprehensively detect the diameter of the inner wall of the pipe, and improve the detection effect.

[0022] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the partial mechanism disassembly of the overall structure (excluding the detection platform) of the present invention;

[0025] Figure 3 This is a schematic diagram of the overall structure of the present invention (without the detection platform and the protective cover);

[0026] Figure 4 It is a schematic diagram of the structure of the mobile chassis area of ​​the present invention;

[0027] Figure 5 It is a schematic cross-sectional view of the telescopic mechanism structure of the present invention;

[0028] Figure 6 It is a schematic diagram of the flip structure of the fixed chassis (without the U-shaped handle) of the present invention.

[0029] In the figure: 10, fixed chassis; 11, protective cover; 12, U-shaped handle; 13, slide rail groove; 14, driving chamber; 20, mobile chassis; 30, telescopic mechanism; 31, fixed block; 32, compression spring; 33, T-block; 34, contact piece; 35, straight shaft; 40, lifting mechanism; 41, first screw rod; 42, lifting plate; 43, first motor; 44, first bevel gear set; 45, guide rod; 46, limiting plate; 50, detection table; 60, infrared transmitter; 70, infrared receiver; 80, clamping mechanism; 81, L-shaped clamping plate; 82, second screw rod; 83, slide rail block; 84, third motor; 85, third bevel gear set; 86, rubber pad; 90, rotating mechanism; 91, internal gear plate; 92, transmission gear; 93, second motor; 94, second bevel gear set. DETAILED DESCRIPTION

[0030] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0031] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0033] For examples, please refer to the attached Figure 1-6 , a pipeline variable diameter detection device, comprising a fixed chassis 10, a mobile chassis 20 and a detection platform 50, the fixed chassis 10 is equipped with a lifting mechanism 40, the lifting mechanism 40 comprises a first screw rod 41 rotatably connected to the center of the fixed chassis 10, a first motor 43 installed on the fixed chassis 10, a lifting plate 42 slidably installed on the first screw rod 41, a first bevel gear set 44 is installed on the output shaft of the first motor 43 and the bottom of the first screw rod 41, and the mobile chassis 20 is installed on the outside of the lifting plate 42;

[0034] The side of the lifting plate 42 is provided with a plurality of telescopic mechanisms 30 distributed in a circumferential manner. The telescopic mechanisms 30 include a fixed block 31 and a contact member 34 fixedly installed on the side of the mobile chassis 20. A notch with an opening width smaller than the internal width is provided on the outer side of the fixed block 31. A T-block 33 is installed at one end of the contact member 34. One end of the T-block 33 is located inside the fixed block 31. Two compression springs 32 are installed inside the fixed block 31. An infrared transmitter 60 is installed at the innermost part of the fixed block 31. An infrared receiver 70 is installed at one end of the inner part of the T-block 33. The positions of the infrared transmitter 60 and the infrared receiver 70 correspond to each other.

[0035] It should be noted that the testing table 50 is a central control computer terminal, which is used to achieve electrical connection with other electrical components. At the same time, the power supply of the electrical components of this device is achieved through conventional appropriate means; the first bevel gear set 44 and the second bevel gear set 94 are both composed of two meshing bevel gears, and the third bevel gear set 85 is composed of a large bevel gear meshing with three small bevel gears.

[0036] For details, please refer to the attached Figure 1 and attached Figure 2 The lifting mechanism 40 further includes guide rods 45 installed on both sides of the first screw rod 41, the two guide rods 45 both penetrate the lifting plate 42, and the tops of the first screw rod 41 and the two guide rods 45 are both provided with limiting plates 46;

[0037] It should be noted that, in this embodiment, the guide rod 45 can improve the stability of the lifting plate 42 and ensure that the lifting plate 42 does not rotate. At the same time, the limiting plate 46 can prevent the lifting plate 42 from excessive displacement, causing the device to fall apart and parts to be lost.

[0038] For details, please refer to the attached Figure 2 A protective cover 11 is installed on one side of the fixed chassis 10 through fixing bolts, the first motor 43 and the first bevel gear set 44 are both located inside the protective cover 11, the protective cover 11 is composed of two identical semicircular covers, and the first screw rod 41 and the guide rod 45 both pass through the protective cover 11;

[0039] It should be noted that, in this embodiment, the protective cover 11 can prevent foreign matter such as dust in the pipeline from affecting the first bevel gear set 44, and prevent the lifting plate 42 from contacting the bevel gear set to cause transmission abnormality.

[0040] For details, please refer to the attached Figure 2 and attached Figure 4 The lifting plate 42 and the moving chassis 20 are rotatably connected via a bearing, and a rotating mechanism 90 is also installed in the area of ​​the moving chassis 20 and the lifting plate 42;

[0041] The rotating mechanism 90 includes an inner gear plate 91 mounted on the top of the mobile chassis 20 and located at the connection with the lifting plate 42, a second motor 93 and a transmission gear 92 mounted on the lifting plate 42, the transmission gear 92 is rotatably connected to the lifting plate 42 and meshes with the inner gear plate 91, and a second bevel gear set 94 is installed on the output shaft of the second motor 93 and the top of the transmission gear 92;

[0042] It should be noted that, in this embodiment, the second motor 93 is operated to complete the transmission between the second bevel gear set 94, so that the transmission gear 92 drives the inner gear plate 91 to rotate, so that the telescopic mechanism 30 on the mobile chassis 20 rotates. At the same time, since the lifting mechanism 40 causes the mobile chassis 20 to rise and fall, the contact member 34 can more comprehensively contact the inner wall of the pipe to detect the diameter of the inner wall of the pipe.

[0043] For details, please refer to the attached Figure 5 , the contact member 34 is a spherical surface pair structure;

[0044] It should be noted that, in this embodiment, the contact member 34 with a spherical surface structure can be more adaptable to the conditions of being lifted and lowered while rotating and contacting the inner wall of the pipe, so that the contact member 34 is always attached to the inner wall of the pipe.

[0045] For details, please refer to the attached Figure 5 The telescopic mechanism 30 further includes two straight shafts 35 installed on both sides of the fixed block 31, the two compression springs 32 are respectively sleeved on the two straight shafts 35, and the two straight shafts 35 both pass through the T-block 33;

[0046] It should be noted that, in this embodiment, the straight shaft 35 plays a guiding role for the compression spring 32 and the T-block 33, so that the expansion and contraction of the T-block 33 is more stable, and the compression spring 32 will not tilt and affect the infrared device.

[0047] For details, please refer to the attached Figure 2 The fixed chassis 10 is provided with a U-shaped handle 12 on one side away from the lifting mechanism 40;

[0048] It should be noted that, in this embodiment, the U-shaped handle 12 can be used to more conveniently carry the device, thereby facilitating the movement of the device.

[0049] For details, please refer to the attached Figure 6 The side of the fixed chassis 10 is provided with a plurality of slide rail grooves 13 in a circumferential distribution, and a driving cavity 14 is provided on the fixed chassis 10 in the middle of the plurality of slide rail grooves 13;

[0050] A clamping mechanism 80 is installed in the fixed chassis 10, and the clamping mechanism 80 is installed in a third motor 84 at the bottom center of the fixed chassis 10, and rotates a plurality of second screw rods 82 connected to the plurality of slide rail grooves 13 and penetrating into the driving cavity 14, respectively, and slide rail blocks 83 slidably installed on the second screw rods 82, and an L-shaped clamping plate 81 installed on the outside of the slide rail block 83, and a third bevel gear set 85 is installed on the output shaft of the third motor 84 and one end of the inner side of the plurality of second screw rods 82;

[0051] It should be noted that, in the present embodiment, when the device detects the inner diameter of the pipeline, it is necessary to fix the position of the fixed chassis 10. At this time, the fixed chassis 10 is placed at the pipe mouth, and the center of the fixed chassis 10 is made coaxial with the center of the pipeline. The third motor 84 is started, and the third bevel gear set 85 is used to transmit the three second screws 82 to rotate synchronously. The L-shaped clamping plate 81 is driven inward by the slide block 83, and the outer wall of the pipeline is clamped by the L-shaped clamping plate 81, thereby realizing the position fixation of the device, which is convenient for the subsequent pipeline inner diameter detection work.

[0052] Furthermore, a rubber pad 86 is embedded and installed on one side of the L-shaped clamping plate 81 close to the fixed chassis 10;

[0053] It should be noted that, in this embodiment, the rubber pad 86 can increase the friction resistance, so that the L-shaped clamping plate 81 can be clamped more firmly on the outer wall of the pipe. At the same time, a groove is provided on one side of the L-shaped clamping plate 81 and the plane of the slide rail groove 13, so that the L-shaped clamping plate 81 will not contact the second screw rod 82.

[0054] Further, in the present invention, the number of the telescopic mechanisms 30 on the lifting plate 42 and the number of the slide rail slots 13 of the fixed chassis 10 are both three;

[0055] It should be noted that, in the present embodiment, the three telescopic mechanisms 30 and the three L-shaped clamping plates 81 of the clamping mechanism 80 distributed in a circle, and the triangles with three adjacent outer points are stable, so that the three L-shaped clamping plates 81 can be stably clamped on the pipe, and the contact members 34 of the three telescopic mechanisms 30 can stably slide on the inner wall of the pipe.

[0056] The specific operation mode of the present invention is as follows:

[0057] First, the fixed chassis 10 is placed at the pipe opening, and when the center of the fixed chassis 10 is coaxial with the center of the pipe, the third motor 84 is started, and the third bevel gear set 85 is used to drive the three second screws 82 to rotate synchronously, and the L-shaped clamping plate 81 is driven to move inward through the slide rail block 83, and the outer wall of the pipe is clamped by the L-shaped clamping plate 81;

[0058] At this time, the mobile chassis 20 is located near one end of the fixed chassis 10, and then the first motor 43 is started to cooperate with the first bevel gear set 44 to complete the transmission, so that the lifting plate 42 drives the mobile chassis 20 to move. At the same time, the second motor 93 is operated to cooperate with the second bevel gear set 94 to complete the transmission, so that the transmission gear 92 meshes with the inner gear plate 91 to rotate, so that the mobile chassis 20 rotates. At this time, the mobile chassis 20 is in a state of moving and rotating at the same time;

[0059] The contact piece 34 is always in contact with the inner wall of the pipe due to the elasticity of the compression spring 32, and the spacing between all components is fixed. Only the distance between the infrared transmitter 60 and the infrared receiver 70 will change due to the change in the diameter of the inner wall of the pipe. The infrared transmitter 60 and the infrared receiver 70 will measure the distance between them. When the distance changes beyond the normal value, the detection platform 50 will record the position of the contact piece 34, thereby judging whether the inner wall of the pipe is qualified.

[0060] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A pipeline diameter change detection device, comprising a fixed chassis (10), a movable chassis (20) and a detection platform (50), characterized in that: A lifting mechanism (40) is installed on the fixed chassis (10), and the lifting mechanism (40) comprises a first screw rod (41) rotatably connected to the center of the fixed chassis (10), a first motor (43) installed on the fixed chassis (10), and a lifting plate (42) slidably installed on the first screw rod (41), a first bevel gear set (44) is installed on the output shaft of the first motor (43) and the bottom of the first screw rod (41), and the movable chassis (20) is installed outside the lifting plate (42); A plurality of telescopic mechanisms (30) are installed on the side of the lifting plate (42) in a circumferential distribution. The telescopic mechanism (30) comprises a fixed block (31) and a contact member (34) fixedly installed on the side of the mobile chassis (20). A slot with an opening width smaller than an internal width is arranged on the outer side of the fixed block (31). A T-shaped block (33) is installed on one end of the contact member (34). One end of the T-shaped block (33) is located inside the fixed block (31). Two compression springs (32) are installed inside the fixed block (31). An infrared transmitter (60) is installed at the innermost part of the fixed block (31). An infrared receiver (70) is installed at one end of the inner part of the T-shaped block (33). The infrared transmitter (60) and the infrared receiver (70) are located in corresponding positions.

2. A pipeline diameter change detection device according to claim 1, characterized in that: The lifting mechanism (40) further comprises guide rods (45) mounted on both sides of the first screw rod (41), the two guide rods (45) both pass through the lifting plate (42), and the tops of the first screw rod (41) and the two guide rods (45) are both provided with limiting plates (46).

3. A pipeline diameter change detection device according to claim 2, characterized in that: A protective cover (11) is mounted on one side of the fixed chassis (10) via fixing bolts; the first motor (43) and the first bevel gear set (44) are both located inside the protective cover (11); the protective cover (11) is composed of two identical semicircular covers; and the first screw rod (41) and the guide rod (45) both pass through the protective cover (11).

4. A pipeline diameter change detection device according to claim 1, characterized in that: The lifting plate (42) and the moving chassis (20) are rotatably connected via a bearing, and a rotating mechanism (90) is also installed in the area of ​​the moving chassis (20) and the lifting plate (42); The rotating mechanism (90) comprises an inner toothed disc (91) mounted on the top of the moving chassis (20) and located at the connection with the lifting disc (42), a second motor (93) and a transmission gear (92) mounted on the lifting disc (42), the transmission gear (92) being rotationally connected to the lifting disc (42) and meshing with the inner toothed disc (91), and a second bevel gear set (94) being mounted on the output shaft of the second motor (93) and the top of the transmission gear (92).

5. A pipeline diameter change detection device according to claim 1, characterized in that: The contact piece (34) is a spherical surface pair structure.

6. A pipeline diameter change detection device according to claim 1, characterized in that: The telescopic mechanism (30) further comprises two straight shafts (35) mounted on both sides of the interior of the fixed block (31), the two compression springs (32) are respectively sleeved on the two straight shafts (35), and the two straight shafts (35) both pass through the T-shaped block (33).

7. A pipeline diameter change detection device according to claim 1, characterized in that: A U-shaped handle (12) is installed on the side of the fixed chassis (10) away from the lifting mechanism (40).

8. A pipeline diameter change detection device according to claim 1, characterized in that: A plurality of slide rail grooves (13) are arranged in a circumferential distribution on the side surface of the fixed chassis (10), and a driving cavity (14) is arranged on the fixed chassis (10) between the plurality of slide rail grooves (13); A clamping mechanism (80) is installed in the fixed chassis (10), and the clamping mechanism (80) is installed on a third motor (84) at the bottom center of the fixed chassis (10), and is respectively rotatably connected to a plurality of second screw rods (82) in the plurality of slide rail grooves (13) and extending through the drive cavity (14), a slide rail block (83) slidably installed on the second screw rods (82), and an L-shaped clamping plate (81) installed on the outside of the slide rail block (83), and a third bevel gear set (85) is installed on the output shaft of the third motor (84) and one end of the inner side of the plurality of second screw rods (82).

9. A pipeline diameter change detection device according to claim 8, characterized in that: A rubber pad (86) is inlaid and installed on one side of the L-shaped clamping plate (81) close to the fixed chassis (10).

10. A pipeline diameter change detection device according to claim 8, characterized in that: The number of the telescopic mechanisms (30) on the lifting plate (42) and the number of the slide rail grooves (13) on the fixed chassis (10) are both three.

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