Tool for measuring inner diameter and outer diameter of underground pipeline

Abstract

The utility model discloses an underground pipeline internal and external diameter measuring tool, which belongs to the technical field of pipeline measurement, and structurally comprises a fixed plate, a group of fixed columns fixed on one side surface of the fixed plate, an adjusting cylinder capable of freely ascending and descending mounted on the fixed plate, an upper blocking ruler fixed at the bottom of the adjusting cylinder, and a rack plate in sliding fit with the inside of the adjusting cylinder, the bottom end of the rack plate penetrates through the adjusting cylinder and is fixedly provided with a lower blocking ruler, scale marks are arranged on the rack plate, a through groove is formed in one side of the adjusting cylinder, an outer frame is fixed to the position, corresponding to the through groove, of one side of the adjusting cylinder, a transmission box is installed in the outer frame, a first gear is rotationally connected into the transmission box, and the first gear penetrates through the through groove and is connected with the rack plate in an engaged mode. The internal and external diameter measuring tool for the underground pipeline can quickly position the diameter of the pipeline, can measure the internal and external diameters of the pipeline at the same time, and is convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline measurement, in particular to a tool for measuring the inner and outer diameters of underground pipelines. Background Art

[0002] When conducting a census of underground pipelines or performing maintenance work on underground drainage pipelines, it is often necessary to collect various information data on the underground pipelines. Measuring the diameter of the drainage pipeline is one of the important operations. In the past, measuring the diameter of the pipeline often required manual work down the well.

[0003] Current underground pipeline measuring tools can measure the inner diameter of pipelines without workers going down the well. However, existing underground pipeline measuring devices mostly use measuring rulers, which have a simple structure. Since the inner wall of the drainage pipeline is uneven due to corrosion or dirt deposition, it is difficult to ensure that the position measured by the measuring ruler is the diameter of the pipeline during use, which is easy to cause measurement errors, and it is impossible to quickly and accurately locate the diameter baseline of the pipeline, and it is impossible to measure the outer diameter of the pipeline at the same time, and the operability is poor. Utility Model Content

[0004] In order to solve the deficiencies in the above-mentioned prior art, the purpose of the utility model is to provide an underground pipeline inner and outer diameter measuring tool, which can quickly locate the diameter of the pipeline and measure the inner and outer diameters of the pipeline at the same time, which is easy to operate.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A tool for measuring the inner and outer diameters of underground pipelines is provided, comprising a fixed plate, a group of fixed columns are fixed to one side of the fixed plate, an adjusting cylinder that can be freely raised and lowered is installed on the fixed plate, an upper stop ruler is fixed to the bottom of the adjusting cylinder, and a rack plate is slidably fitted in the adjusting cylinder, the bottom end of the rack plate passes through the adjusting cylinder and is fixed with a lower stop ruler, scale lines are provided on the rack plate, a through groove is provided on one side of the adjusting cylinder, and an outer frame is fixed at a position on one side of the adjusting cylinder corresponding to the through groove, a transmission box is installed in the outer frame, a first gear is rotatably connected in the transmission box, the first gear passes through the through groove and is meshed with the rack plate.

[0007] Furthermore, a group of first guide columns are fixed to one side of the upper surface of the fixed plate, a threaded screw is rotatably connected to the upper surface of the fixed plate and located between the two first guide columns, a lifting plate is fixed to the bottom end of the adjusting cylinder, the first guide column penetrates the lifting plate and slides with the lifting plate, the threaded screw penetrates the lifting plate and is threadedly connected with the lifting plate, a top plate is fixed to the top of the first guide column, and the top of the threaded screw penetrates the top plate and is fixed with a handwheel.

[0008] Furthermore, the axes of the upper and lower stoppers are located on the same vertical line, and the side surfaces of the upper and lower stoppers are in contact with each other.

[0009] Furthermore, a groove is provided at the top of the adjusting cylinder, and an end plate is fixed at the top of the rack plate.

[0010] Furthermore, the two fixing columns are symmetrically arranged relative to the adjusting cylinder, the adjusting cylinder is vertically arranged on the fixing plate, and the lower stop ruler and the two fixing columns are both cylindrical structures.

[0011] Furthermore, movable plates are fixed on the upper and lower surfaces of the transmission box, two groups of second guide columns are fixed between the outer frame and the adjustment cylinder, the movable plate is slidably sleeved on the outside of the second guide columns, and two groups of tension springs are fixed between the movable plate and the adjustment cylinder.

[0012] Furthermore, the tension spring is wrapped around the outside of the second guide column, a pull rod is fixed to one side of the transmission box, and one end of the pull rod slides through the outer frame and is fixed with a pull plate.

[0013] Furthermore, the rotating shaft of the first gear passes through the transmission box and is fixed with the second gear. One side of the transmission box is rotatably connected to the third gear, the third gear is meshed with the second gear, and one side of the third gear is fixedly mounted with a knob.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The underground pipeline inner and outer diameter measuring tool of the utility model is used to quickly clamp and fix the fixing plate at the end of the pipeline to be measured through the upper stop ruler and two fixing columns. The two fixing columns are in contact with the inner wall line of the pipeline, and the upper stop ruler is in contact with the outer wall line of the pipeline. The three contact lines form an isosceles triangle. Therefore, the rack plate is parallel to one diameter of the pipeline at this time. The operation is simple and the diameter of the pipeline can be quickly located.

[0016] 2. The underground pipeline inner and outer diameter measuring tool of the utility model example, after the fixing plate is fixed on the pipeline, slide the rack plate downward to make the lower stop ruler contact with the bottom of the pipeline. At this time, the downward extension of the rack plate can be read through the scale line, and the inner diameter value of the measured pipeline can be obtained by adding the extension amount to the diameter of the lower stop ruler. When the outer diameter of the pipeline needs to be measured, it is only necessary to make the lower stop ruler contact with the top of the pipeline, and the thickness value of the pipeline can be obtained by reading the extension amount of the lower stop ruler through the scale line. The outer diameter value of the pipeline can be obtained by adding the pipeline thickness value and the inner diameter value, and the inner and outer diameters of the pipeline can be measured at the same time.

[0017] 3. The underground pipeline inner and outer diameter measuring tool of the utility model example can drive the lifting plate to vertically lift and lower along the first guide column through the rotation of the threaded screw, thereby realizing the movement of the adjusting cylinder in the vertical direction, so that the fixed column and the upper stop can quickly and stably clamp the fixed pipeline, with a simple structure and easy operation.

[0018] 4. The underground pipeline inner and outer diameter measuring tool of the utility model example can adjust the connection state of the first gear and the rack plate inside the transmission box through the setting of the tension spring and the second guide column. When the transmission box is moved outward, the tension spring is stretched. At this time, the meshing relationship between the first gear and the rack plate is disconnected. The operator can quickly move the rack plate up and down to a suitable position. When the first gear and the rack plate are meshed and connected, the rack plate is locked by the first gear. At the same time, the moving distance of the rack plate in the vertical direction can also be accurately adjusted by rotating the first gear. It is more flexible to use and convenient for the measurement operation of the measurer.

[0019] 5. The underground pipeline inner and outer diameter measuring tool of the utility model example, through the setting of the second gear and the third gear, makes the first gear not to rotate passively due to the action of the rack plate, enhances the mechanical self-locking ability of the first gear, enables the first gear to lock the rack plate, prevents the rack plate from slipping in the vertical direction, and has a stable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the utility model in use;

[0023] Figure 3 It is a structural schematic diagram of the utility model when the fixing plate and the adjusting cylinder are connected;

[0024] Figure 4 It is a structural schematic diagram of the regulating cylinder of the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the rack plate and the transmission box of the utility model when they are matched;

[0026] Figure 6 It is a structural schematic diagram of the utility model when A is enlarged.

[0027] In the figure, 1. fixed plate, 2. fixed column, 3. lifting plate, 4. adjusting cylinder, 5. upper stop ruler, 6. rack plate, 7. lower stop ruler, 8. end plate, 9. scale line, 10. groove, 11. outer frame, 12. first guide column, 13. top plate, 14. threaded screw, 15. hand wheel, 16. through groove, 17. second guide column, 18. movable plate, 19. tension spring, 20. transmission box, 21. first gear, 22. second gear, 23. third gear, 24. knob, 25. pull rod. DETAILED DESCRIPTION

[0028] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0029] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0030] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. It should also be noted that, for ease of description, only the parts related to the utility model are shown in the drawings.

[0034] Embodiment 1:

[0035] refer to Figure 1-6 The tool for measuring the inner and outer diameters of underground pipelines shown in the figure comprises a fixed plate 1, a group of fixed columns 2 are fixed to one side of the fixed plate 1, an adjusting cylinder 4 which can be freely raised and lowered is installed on the fixed plate 1, an upper stop ruler 5 is fixed to the bottom of the adjusting cylinder 4, and a rack plate 6 is slidably fitted in the adjusting cylinder 4, the bottom end of the rack plate 6 passes through the adjusting cylinder 4 and is fixed with a lower stop ruler 7, scale lines 9 are provided on the rack plate 6, a through groove 16 is provided on one side of the adjusting cylinder 4, and an outer frame 11 is fixed at a position corresponding to the through groove 16 on one side of the adjusting cylinder 4, a transmission box 20 is installed in the outer frame 11, a first gear 21 is rotatably connected in the transmission box 20, the first gear 21 passes through the through groove 16 and is meshed with the rack plate 6, the axes of the upper stop ruler 5 and the lower stop ruler 7 are located on the same vertical straight line, and the sides of the upper stop ruler 5 and the lower stop ruler 7 are in contact with each other.

[0036] When using the utility model to perform pipeline measurement operations, first extend the lower stopper 7 downward by a certain distance, so that the adjustment tube 4 is lifted by a certain distance, so as to facilitate placing the fixed column 2 and the lower stopper 7 inside the pipeline to be measured, and the upper stopper 5 is located on the outside of the pipeline, and the adjustment tube 4 is adjusted so that the adjustment tube 4 and the fixed plate 1 are close to each other, and the entire fixed plate 1 is quickly clamped and fixed on the end face of the pipeline to be measured, the two fixed columns 2 are in line contact with the inner wall of the pipeline, and the upper stopper 5 is in line contact with the outer wall of the pipeline, and the three contact lines form an isosceles triangle, so the rack plate 6 is parallel to a diameter of the pipeline at this time, and then the first gear 21 inside the transmission box 20 is rotated, and the vertical lifting of the rack plate 6 is controlled by the first gear 21;

[0037] When measuring the inner diameter of the pipeline, slide the rack plate 6 downward so that the lower stop 7 contacts the bottom of the pipeline. At this time, the downward extension of the rack plate 6 can be read from the scale line 9, and the inner diameter of the measured pipeline can be obtained by adding the extension to the diameter of the lower stop 7.

[0038] When the outer diameter of the pipeline needs to be measured, it is only necessary to make the lower ruler 7 contact with the top of the pipeline, because the structural surface distance between the upper ruler 5 and the lower ruler 7 is the thickness of the pipeline. At this time, the elongation of the lower ruler 7 can be read through the scale line 9 to obtain the thickness value of the pipeline, and the outer diameter value of the pipeline can be obtained by adding the pipeline thickness value and the inner diameter value.

[0039] In order to better control the vertical lifting and lowering of the adjusting cylinder 4, in this embodiment, a group of first guide columns 12 are fixed on one side of the upper surface of the fixed plate 1, and a threaded screw 14 is rotatably connected to the upper surface of the fixed plate 1 and located between the two first guide columns 12. A lifting plate 3 is fixed to the bottom end of the adjusting cylinder 4, the first guide column 12 penetrates the lifting plate 3 and slides with the lifting plate 3, the threaded screw 14 penetrates the lifting plate 3 and is threadedly connected with the lifting plate 3, a top plate 13 is fixed to the top of the first guide column 12, and the top of the threaded screw 14 penetrates the top plate 13 and is fixed with a hand wheel 15.

[0040] The setting of the hand wheel 15 can facilitate the rotation of the threaded screw 14 . The setting of the first guide column 12 enables the lifting plate 3 to drive the adjusting cylinder 4 to move in the vertical direction. The lifting plate 3 can be driven to move by the threaded screw 14 .

[0041] In order to facilitate observation of the scale line 9, in this embodiment, a groove 10 is provided on the top of the adjustment cylinder 4, and an end plate 8 is fixed on the top of the rack plate 6. Figure 6 As shown, when the upper scale 5 and the lower scale 7 are in contact with each other, the 0 scale line on the scale line 9 is exactly parallel to the bottom of the groove 10, and the bottom of the groove 10 can be used as an indicator line to facilitate reading the value of the scale line 9.

[0042] Preferably, in this embodiment, the two fixed columns 2 are symmetrically arranged relative to the adjustment cylinder 4, the adjustment cylinder 4 is vertically arranged on the fixed plate 1, and the lower stopper 7 and the two fixed columns 2 are both cylindrical structures. The design of the cylindrical structures of the lower stopper 7 and the fixed columns 2 can make the fixed columns 2 contact with the inner wall line of the pipeline, the lower stopper 7 contact with the inner wall line of the pipeline, and the adjustment cylinder 4 is located between the two fixed columns 2, so that the contact line between the fixed columns 2, the upper stopper 5 and the pipeline forms an isosceles triangle.

[0043] Embodiment 2: The features of this embodiment that are the same as those of Embodiment 1 are not described in detail. The features of this embodiment that are different from those of Embodiment 1 are as follows: Figure 3 , 4As shown in 5, a movable plate 18 is fixed on the upper and lower surfaces of the transmission box 20, two groups of second guide columns 17 are fixed between the outer frame 11 and the adjusting cylinder 4, the movable plate 18 is slidably sleeved on the outside of the second guide columns 17, two groups of tension springs 19 are fixed between the movable plate 18 and the adjusting cylinder 4, the tension springs 19 are wrapped around the outside of the second guide columns 17, a pull rod 25 is fixed on one side of the transmission box 20, one end of the pull rod 25 slides through the outer frame 11 and is fixed with a pull plate. The arrangement of the tension spring 19 and the second guide column 17 facilitates the adjustment of the connection state between the first gear 21 inside the transmission box 20 and the rack plate 6. By pulling the pull rod 25 outward to drive the transmission box 20 to move, the tension spring 19 is stretched, and the meshing relationship between the first gear 21 and the rack plate 6 is disconnected. The operator can quickly move the rack plate 6 up and down to a suitable position, saving operation time. When the tension of the pull rod 25 is removed, the first gear 21 and the rack plate 6 are meshed and connected under the action of the elastic restoring force of the tension spring 19, and the rack plate 6 is locked by the first gear 21. At the same time, the vertical movement distance of the rack plate 6 can also be accurately adjusted by rotating the first gear 21.

[0044] Embodiment three:

[0045] The features of this embodiment that are the same as those of the second embodiment are not described in detail. The features of this embodiment that are different from those of the second embodiment are as follows: Figure 5 As shown, the shaft of the first gear 21 passes through the transmission box 20 and is fixed with the second gear 22. The third gear 23 is rotatably connected to one side of the transmission box 20. The third gear 23 is meshed with the second gear 22. A knob 24 is fixedly installed on one side of the third gear 23. The third gear 23 is driven to rotate by turning the knob 24, and the third gear 23 drives the second gear 22 to rotate. The first gear 21 then rotates with the second gear 22, which enhances the mechanical self-locking ability of the first gear 21, so that the first gear 21 can effectively lock and fix the rack plate 6.

[0046] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

[0047] Except for the technical features described in the specification, the other technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present utility model, the other technical features will not be described in detail here.

Claims

1. A tool for measuring inner and outer diameters of underground pipelines, characterized in that: The invention comprises a fixing plate (1), a group of fixing columns (2) are fixed on one side of the fixing plate (1), an adjusting cylinder (4) which can be lifted and lowered freely is installed on the fixing plate (1), an upper stopper (5) is fixed on the bottom of the adjusting cylinder (4), a rack plate (6) is slidably matched in the adjusting cylinder (4), the bottom end of the rack plate (6) passes through the adjusting cylinder (4) and is fixed with a lower stopper (7), a scale line (9) is provided on the rack plate (6), a through slot (16) is provided on one side of the adjusting cylinder (4), an outer frame (11) is fixed at a position corresponding to the through slot (16) on one side of the adjusting cylinder (4), a transmission box (20) is installed in the outer frame (11), a first gear (21) is rotatably connected in the transmission box (20), the first gear (21) passes through the through slot (16) and is meshedly connected with the rack plate (6).

2. The underground pipeline inner and outer diameter measuring tool according to claim 1, characterized in that: A group of first guide columns (12) are fixed on one side of the upper surface of the fixed plate (1); a threaded screw (14) is rotatably connected to a position between the two first guide columns (12) on the upper surface of the fixed plate (1); a lifting plate (3) is fixed to the bottom end of the adjustment cylinder (4); the first guide column (12) passes through the lifting plate (3) and is slidably matched with the lifting plate (3); the threaded screw (14) passes through the lifting plate (3) and is threadedly connected to the lifting plate (3); a top plate (13) is fixed to the top of the first guide column (12); the top of the threaded screw (14) passes through the top plate (13) and is fixed with a hand wheel (15).

3. The underground pipeline inner and outer diameter measuring tool according to claim 1, characterized in that: The axes of the upper stop ruler (5) and the lower stop ruler (7) are located on the same vertical straight line, and the side surfaces of the upper stop ruler (5) and the lower stop ruler (7) are in contact with each other.

4. The underground pipeline inner and outer diameter measuring tool according to claim 1, characterized in that: The top of the adjusting cylinder (4) is provided with a groove (10), and the top of the rack plate (6) is fixed with an end plate (8).

5. The underground pipeline inner and outer diameter measuring tool according to claim 1, characterized in that: The two fixed columns (2) are symmetrically arranged relative to the adjustment cylinder (4); the adjustment cylinder (4) is vertically arranged on the fixed plate (1); and the lower stopper (7) and the two fixed columns (2) are both cylindrical structures.

6. The underground pipeline inner and outer diameter measuring tool according to claim 1, characterized in that: A movable plate (18) is fixed to the upper and lower surfaces of the transmission box (20), two groups of second guide columns (17) are fixed between the outer frame (11) and the adjustment cylinder (4), the movable plate (18) is slidably sleeved on the outside of the second guide columns (17), and two groups of tension springs (19) are fixed between the movable plate (18) and the adjustment cylinder (4).

7. The underground pipeline inner and outer diameter measuring tool according to claim 6, characterized in that: The tension spring (19) surrounds the outside of the second guide column (17), a pull rod (25) is fixed to one side of the transmission box (20), and one end of the pull rod (25) slides through the outer frame (11) and is fixed with a pull plate.

8. The underground pipeline inner and outer diameter measuring tool according to claim 6, characterized in that: The rotating shaft of the first gear (21) passes through the transmission box (20) and is fixed with the second gear (22); one side of the transmission box (20) is rotatably connected to a third gear (23); the third gear (23) is meshingly connected to the second gear (22); and one side of the third gear (23) is fixedly mounted with a knob (24).

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