An automatic casing caliper

Abstract

The utility model discloses an automatic casing caliper, relates to caliper technical field, including the traction assembly and the caliper test subassembly of front and back connection, and the caliper test subassembly includes first cylinder, first center column, telescopic ware and two sets of test board mechanism, and test board mechanism includes annular board, and annular board divides into three sectorial plates, and the inboard of sectorial plate is connected with swing bar, and its back side is hinged with support rod, swing bar other end is hinged on the outer wall of first cylinder, and support rod other end is hinged with sliding block, and the outer wall of first cylinder is provided with six axial and corresponding with sliding block's sliding slot, and the sliding slot is equipped with the limit block, and sliding block sliding installation is in the sliding slot, telescopic ware is fixed at the rear end of first cylinder, and its output end is connected with first center column rear end, this device moves forward in casing, when meeting the barrier, through telescopic ware drive first center column moves back, make the baffle away from sliding block to remove the back limit of sliding block to make this device can cross the barrier.

Description

Technical Field

[0001] This utility model relates to the field of gauge technology, specifically to an automatic sleeve gauge. Background Technology

[0002] The existing method for checking the casing diameter is to tie ropes or wire ropes to both ends of the gauge and place it inside the casing, then pull it from one end to the other to check for deformation or damage to the inner wall of the casing.

[0003] Currently, there is also a method of using a pipeline robot to carry a diameter test plate and move it inside the casing. However, once either of these methods encounters an obstacle, it cannot continue to move forward and can only return to retrieve the device, making the inspection process cumbersome and increasing the workload of workers. Moreover, the above two methods can only detect the first obstacle or deformation and cannot cross the obstacle point to carry out subsequent inspections. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing an automatic sleeve diameter gauge.

[0005] The technical solution of this utility model is: an automatic sleeve diameter gauge, including a traction assembly and a diameter testing assembly connected front and rear. The diameter testing assembly includes a first cylinder, a first central column, a telescopic device, and multiple sets of test plate mechanisms installed on the outside of the first cylinder. The multiple sets of test plate mechanisms are arranged side by side. Each test plate mechanism includes an annular plate. Each annular plate is divided into multiple sector plates. A swing rod is connected to the inner side of each sector plate, and a support rod is hinged to its rear side. The other end of the swing rod is hinged to the outer wall of the first cylinder, and the other end of the support rod is hinged to a slider. Multiple axial grooves corresponding to the sliders are opened on the outer wall of the first cylinder. A limiting block is provided in each groove. The slider is slidably installed in the groove. When the front side of the slider contacts the limiting block, the connected sector plate is perpendicular to the first cylinder. The telescopic device is fixed to the rear end of the first cylinder, and its output end is connected to the rear end of the first central column. The first central column is slidably installed inside the first cylinder, and its outer wall is provided with a plurality of stops that correspond one-to-one with the slider. The stops penetrate into the sliding groove and are located on the rear side of the slider.

[0006] Preferably, the front end of each slider is connected to the front end of the slide groove via a tension spring.

[0007] Preferably, the traction assembly includes a second cylinder, a second central column, a compression spring, an adjusting sleeve, and multiple sets of drive mechanisms arranged in parallel. The second central column is slidably installed inside the second cylinder, and its front end is provided with a coaxial connecting column. The connecting column passes through the front end plate of the second cylinder, and its outer diameter is smaller than the outer diameter of the second central column. The compression spring is sleeved on the connecting column inside the second cylinder, and its two ends are respectively supported on the front end plate of the second cylinder and the front end surface of the second central column. The adjusting sleeve is sleeved on the connecting column outside the second cylinder. The driving mechanism includes multiple sets of linkage mechanisms arranged in a circumferential array. The second cylinder has multiple axial through slots that correspond one-to-one with the linkage mechanisms. The linkage mechanism includes a first link and a second link. One end of the first link is hinged in the through slot, and the other end is hinged to the second link. The outer end of the second link is equipped with a drive wheel, and the inner end passes through the through slot and is hinged to the outer wall of the second central column.

[0008] Preferably, the adjusting sleeve is threadedly connected to the connecting column.

[0009] Preferably, the drive mechanism includes at least three sets of linkage mechanisms.

[0010] Compared with the prior art, this utility model has the following advantages: This device carries the diameter testing component forward within the sleeve via a traction assembly. When it encounters an obstacle, the telescopic device moves the first central column backward, causing the stop block to move away from the slider and thus releasing the rear limit on the slider. This allows the device to pass over the obstacle. After passing the obstacle, the telescopic device resets the first central column, thereby re-locking the position of the sector plate.

[0011] The traction assembly of this device is equipped with an adjustment sleeve. The adjustment sleeve limits the stroke of the compression spring, and the opening degree of the drive wheel is flexibly controlled by the linkage mechanism to ensure the pressure applied to the inner wall of the casing, prevent the drive wheel from slipping, and also make the traction assembly suitable for casings with different inner diameters. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional view of the bore test assembly; Figure 3 This is a cross-sectional view of the traction component.

[0013] In the diagram: 1. Sector plate, 2. Swing rod, 3. Support rod, 4. Slider, 5. First cylinder, 501. Slide groove, 6. First central column, 7. Telescopic device, 8. Limiting block, 9. Tension spring, 10. Stop block, 11. Second cylinder, 1101. Through groove, 12. Second central column, 13. Connecting column, 14. Compression spring, 15. Adjusting sleeve, 16. First connecting rod, 17. Second connecting rod, 18. Drive wheel. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0015] Reference Figure 1-2 As shown, an automatic sleeve diameter gauge includes a traction assembly and a diameter testing assembly connected front and rear. The diameter testing assembly includes a first cylinder 5, a first central column 6, an expansion joint 7, and two sets of test plate mechanisms installed on the outside of the first cylinder 5. The two sets of test plate mechanisms are arranged side by side. The test plate mechanism includes an annular plate. The annular plate is divided into three sector plates 1. A swing rod 2 is connected to the inner side of the sector plate 1, and a support rod 3 is hinged to its rear side. The other end of the swing rod 2 is hinged to the outer wall of the first cylinder 5, and the other end of the support rod 3 is hinged to a slider 4. Six axial grooves 501 are opened on the outer wall of the first cylinder 5, which correspond one-to-one with the slider 4. A limiting block 8 is provided in the groove 501. The slider 4 is slidably installed in the groove 501. When the front side of the slider 4 contacts the limiting block 8, the connected sector plate 1 is perpendicular to the first cylinder 5.

[0016] The telescopic device 7 is fixed at the rear end of the first cylinder 5, and its output end is connected to the rear end of the first central column 6. The first central column 6 is slidably installed inside the first cylinder 5, and its outer wall is provided with six stops 10 corresponding to the slider 4 one by one. The six stops 10 are divided into front and rear groups, and the stops 10 penetrate into the slide groove 501, which is located on the rear side of the slider 4.

[0017] More specifically, the front end of the slider 4 is connected to the front end of the slide groove 501 via a tension spring 9, and the telescopic device 7 in this embodiment is an electric push rod.

[0018] Initially, the output end of the telescopic device 7 is in the extended state. At this time, the front and rear sides of the slider 4 are in contact with the limit block 8 and the stop block 10 respectively. In this state, the sector plate 1 cannot be flipped backward.

[0019] In use, place the device inside the sleeve, then control the traction assembly to move it forward within the sleeve, carrying the bore diameter testing assembly. When an obstacle is encountered, control the electric push rod to pull the first central column 6 backward, causing the stop block 10 to move away from the slider 4, thus releasing the rear limit on the slider 4. Control the traction assembly to continue moving forward. When blocked by an obstacle, the corresponding sector plate 1 will flip backward. After passing the obstacle, the sector plate 1 will automatically reset under the action of the tension spring 9. At the same time, control the output end of the electric push rod to extend, driving the first central column 6 to reset, thereby re-locking the position of the sector plate 1. Example 2

[0020] As a preferred embodiment of this utility model, this embodiment designs the traction component based on Embodiment 1, specifically as follows: Reference Figure 1 and Figure 3 As shown, the traction assembly includes a second cylinder 11, a second central column 12, a compression spring 14, an adjusting sleeve 15, and two sets of drive mechanisms arranged side by side. The second central column 12 is slidably installed inside the second cylinder 11, and its front end is provided with a coaxial connecting column 13. The connecting column 13 passes through the front end plate of the second cylinder 11, and its outer diameter is smaller than the outer diameter of the second central column 12. The compression spring 14 is sleeved on the connecting column 13 inside the second cylinder 11, and its two ends are respectively supported on the front end plate of the second cylinder 11 and the front end face of the second central column 12. The adjusting sleeve 15 is sleeved on the connecting column 13 outside the second cylinder 11, and the two are threadedly connected.

[0021] The drive mechanism includes three sets of linkage mechanisms arranged in a circumferential array. The second cylinder 11 has three axial through slots 1101 that correspond one-to-one with the linkage mechanisms. The linkage mechanism includes a first link 16 and a second link 17. One end of the first link 16 is hinged in the through slot 1101, and the other end is hinged to the second link 17. The outer end of the second link 17 is equipped with a drive wheel 18, and the inner end passes through the through slot 1101 and is hinged to the outer wall of the second central column 12.

[0022] Before inserting into the casing, adjust the position of the adjusting sleeve 15 on the connecting column 13 so that the maximum outer diameter of the traction assembly is slightly larger than the inner diameter of the casing. Then, insert the traction assembly and the bore diameter test assembly into the casing in sequence. After entering the casing, the drive wheel 18 moves inward under the pressure of the inner wall of the casing, which in turn drives the second central column 12 to compress the spring 14 through the second connecting rod 17 to ensure the pressure applied to the inner wall of the casing and prevent the drive wheel 18 from slipping. The traction assembly is driven by two sets of drive mechanisms to move within the casing.

[0023] In summary, this device carries the through diameter testing component forward within the sleeve via the traction assembly. When it encounters an obstacle, the telescopic device 7 moves the first central column 6 backward, causing the stop block 10 to move away from the slider 4, thereby releasing the rear limit on the slider 4. This allows the device to pass over the obstacle. After passing the obstacle, the telescopic device 7 resets the first central column 6, thus re-locking the position of the sector plate 1.

[0024] The traction assembly of this device is equipped with an adjustment sleeve 15. The adjustment sleeve 15 limits the stroke of the compression spring 14, and the opening degree of the drive wheel 18 is flexibly controlled by the linkage mechanism to ensure the pressure applied to the inner wall of the sleeve, prevent the drive wheel 18 from slipping, and also make the traction assembly suitable for sleeves with different inner diameters.

[0025] This utility model is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model, and the changed content still falls within the protection scope of this utility model.

Claims

1. An automatic casing gauge, comprising a traction assembly and a gauge testing assembly connected front and rear, characterized in that: The bore diameter testing assembly includes a first cylinder, a first central column, an expansion joint, and multiple test plate mechanisms installed on the outside of the first cylinder. The multiple test plate mechanisms are arranged side by side, and each test plate mechanism includes an annular plate. Each annular plate is divided into multiple sector plates. A swing rod is connected to the inner side of each sector plate, and a support rod is hinged to its rear side. The other end of the swing rod is hinged to the outer wall of the first cylinder, and the other end of the support rod is hinged to a slider. Multiple axial grooves corresponding to the sliders are opened on the outer wall of the first cylinder. A limiting block is provided in each groove. The slider is slidably installed in the groove. When the front side of the slider contacts the limiting block, the sector plate connected to it is perpendicular to the first cylinder. The telescopic device is fixed to the rear end of the first cylinder, and its output end is connected to the rear end of the first central column. The first central column is slidably installed inside the first cylinder, and its outer wall is provided with a plurality of stops that correspond one-to-one with the slider. The stops penetrate into the sliding groove and are located on the rear side of the slider.

2. The automatic sleeve diameter gauge according to claim 1, characterized in that: The front end of each slider is connected to the front end of the slide groove via a tension spring.

3. The automatic sleeve diameter gauge according to claim 1, characterized in that: The traction assembly includes a second cylinder, a second central column, a compression spring, an adjusting sleeve, and multiple sets of front-to-back drive mechanisms. The second central column is slidably installed inside the second cylinder, and its front end is provided with a coaxial connecting column. The connecting column passes through the front end plate of the second cylinder, and its outer diameter is smaller than that of the second central column. The compression spring is sleeved on the connecting column inside the second cylinder, and its two ends are respectively supported on the front end plate of the second cylinder and the front end surface of the second central column. The adjusting sleeve is sleeved on the connecting column outside the second cylinder. The driving mechanism includes multiple sets of linkage mechanisms arranged in a circumferential array. The second cylinder has multiple axial through slots that correspond one-to-one with the linkage mechanisms. The linkage mechanism includes a first link and a second link. One end of the first link is hinged in the through slot, and the other end is hinged to the second link. The outer end of the second link is equipped with a drive wheel, and the inner end passes through the through slot and is hinged to the outer wall of the second central column.

4. An automatic sleeve diameter gauge according to claim 3, characterized in that: The adjusting sleeve is threadedly connected to the connecting column.

5. An automatic sleeve diameter gauge according to claim 3, characterized in that: The drive mechanism includes at least three sets of linkage mechanisms.

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