Pipeline inner diameter measuring device

Abstract

The utility model discloses a device for measuring the inner diameter of a pipeline, and relates to the technical field of pipeline measurement. The device comprises a vertical rod, a cross rod is fixedly installed on one side of the vertical rod, a first sliding block and a second sliding block which are symmetrically distributed are installed in the cross rod in a sliding mode, a two-way lead screw is rotatably installed in the cross rod, the two-way lead screw is inserted in the first sliding block and the second sliding block in a threaded mode, and first connecting rods are installed at the upper end and the lower end of the first sliding block in a hinged mode. Second connecting rods are hinged to the upper end and the lower end of the second sliding block, one end of each first connecting rod is hinged to one end of the corresponding second connecting rod, two sliding plates which are symmetrically distributed are slidably installed in the vertical rod, and measuring plates are fixedly installed at one ends of the two sliding plates. The hinge points of the corresponding first connecting rods and second connecting rods can make contact with the corresponding measuring plates, scale marks are fixedly arranged on one sides of the vertical rods, and pointers are fixedly installed at one ends of the two sliding plates.

Description

Technical Field

[0001] This utility model relates to the field of pipeline measurement technology, specifically a pipeline inner diameter measuring device. Background Technology

[0002] A pipeline is a device consisting of pipes, pipe fittings, and valves used to transport gases, liquids, or fluids containing solid particles. Typically, fluids are pressurized by blowers, compressors, pumps, and boilers, flowing from high-pressure areas to low-pressure areas within the pipeline. Alternatively, the fluid's own pressure or gravity can be used for transport. Pipelines have a wide range of applications, primarily in water supply, drainage, heating, gas supply, long-distance transport of oil and natural gas, agricultural irrigation, hydraulic engineering, and various industrial installations. When using pipelines, it is necessary to measure their inner diameter for proper connection and installation. Currently, inspectors typically use a measuring tape to measure the inner diameter of pipes. However, this method is prone to inaccuracies and can introduce deviations, significantly affecting the measurement's accuracy. Utility Model Content

[0003] To address the problem that using a measuring tape to measure the inner diameter of pipes can easily lead to deviations and seriously affect the accuracy of the measurement, the purpose of this utility model is to provide a pipe inner diameter measuring device.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a pipe inner diameter measuring device, comprising a vertical rod and a housing assembly, a horizontal rod fixedly installed on one side of the vertical rod, a first slider and a second slider symmetrically distributed slidably installed inside the horizontal rod, a bidirectional lead screw rotatably installed inside the horizontal rod, and the bidirectional lead screw threaded into the first slider and the second slider, a first connecting rod hinged to both ends of the first slider, a second connecting rod hinged to both ends of the second slider, and one end of the first connecting rod hinged to one end of the corresponding second connecting rod, two symmetrically distributed sliding plates slidably installed inside the vertical rod, a measuring plate fixedly installed at one end of each of the two sliding plates, and the hinge point of the corresponding first connecting rod and the second connecting rod can contact the corresponding measuring plate, a scale line fixedly provided on one side of the vertical rod, and a pointer fixedly installed at one end of each of the two sliding plates.

[0005] Preferably, the vertical rod has two symmetrically distributed first sliding grooves, and the sliding plate is slidably installed in the corresponding first sliding groove. A fixing rod is fixedly installed in each of the two first sliding grooves, and the fixing rod is inserted through the corresponding sliding plate. A spring is sleeved on each of the two fixing rods, and one end of the spring is fixedly connected to the corresponding sliding plate.

[0006] Preferably, a second sliding groove is provided inside the crossbar, and the first slider, the second slider, and the bidirectional lead screw are all installed in the second sliding groove. Guide grooves are provided on both sides inside the second sliding groove. Fixing blocks are fixedly installed on both sides of the first slider and the second slider, and the fixing blocks are slidably locked in the corresponding guide grooves. A knob is fixedly installed at one end of the bidirectional lead screw.

[0007] Preferably, the storage component includes a storage box, vertical bars and horizontal bars that can be placed inside the storage box, a lid that is hinged to the storage box, buckles that are fixedly installed on both the storage box and the lid, and the two buckles can be engaged together, and a handle that is fixedly installed on the storage box.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] In this invention, a bidirectional lead screw can be used to drive the first slider and the second slider to slide in opposite directions. The sliding of the first slider and the second slider in opposite directions drives the two measuring plates to move synchronously in opposite directions through the first connecting rod and the second connecting rod until the measuring plate contacts the inner wall of the pipe. The measuring plate drives the corresponding sliding plate to move synchronously, and the sliding plate drives the pointer to move to the corresponding scale line, thereby accurately measuring the inner diameter of the pipe. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the internal structure of the vertical and horizontal bars of this utility model;

[0013] Figure 3 This is a schematic diagram of the cross-sectional structure of the vertical and horizontal bars of this utility model.

[0014] In the diagram: 1. Vertical rod; 101. First slide groove; 2. Horizontal rod; 201. Second slide groove; 202. Guide groove; 3. Two-way lead screw; 4. First connecting rod; 5. Second connecting rod; 6. First slider; 7. Measuring plate; 8. Sliding plate; 9. Scale line; 10. Knob; 11. Fixing rod; 12. Spring; 13. Pointer; 14. Second slider; 15. Fixing block; 16. Storage assembly; 1601. Storage box; 1602. Box lid; 1603. Buckle; 1604. Handle. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example: Figure 1-3 As shown, this utility model provides a pipe inner diameter measuring device, including a vertical rod 1 and a housing assembly 16. A horizontal rod 2 is fixedly installed on one side of the vertical rod 1. A first slider 6 and a second slider 14 are symmetrically distributed and slidably installed inside the horizontal rod 2. A bidirectional lead screw 3 is rotatably installed inside the horizontal rod 2, and the bidirectional lead screw 3 is threaded into the first slider 6 and the second slider 14. A first connecting rod 4 is hinged to both the upper and lower ends of the first slider 6, and a second connecting rod 5 is hinged to both the upper and lower ends of the second slider 14. One end of the first connecting rod 4 is hinged to one end of the corresponding second connecting rod 5. Two symmetrically distributed sliding plates 8 are slidably installed inside the vertical rod 1, and one end of each of the two sliding plates 8 is fixedly installed with... The measuring plate 7 has a hinge point where the corresponding first connecting rod 4 and second connecting rod 5 can contact the corresponding measuring plate 7. A scale line 9 is fixedly set on one side of the vertical rod 1. A pointer 13 is fixedly installed on one end of each of the two sliding plates 8. The horizontal rod 2 can be inserted into the pipe to be measured. The first slider 6 and the second slider 14 are driven to slide towards each other by the double-acting screw 3. The sliding of the first slider 6 and the second slider 14 towards each other drives the two measuring plates 7 to move synchronously in opposite directions through the first connecting rod 4 and the second connecting rod 5 until the measuring plate 7 contacts the inner wall of the pipe. The measuring plate 7 drives the corresponding sliding plate 8 to move synchronously. The sliding plate 8 drives the pointer 13 to move to the corresponding scale line 9, so that the inner diameter of the pipe can be accurately measured.

[0017] Two symmetrically distributed first sliding grooves 101 are provided inside the vertical rod 1, and the sliding plate 8 is slidably installed in the corresponding first sliding groove 101. A fixing rod 11 is fixedly installed in each of the two first sliding grooves 101, and the fixing rod 11 is inserted through the corresponding sliding plate 8. A spring 12 is sleeved on each of the two fixing rods 11, and one end of the spring 12 is fixedly connected to the corresponding sliding plate 8, so that the sliding plate 8 moves along the fixing rod 11 in the first sliding groove 101 in the vertical rod 1. The spring 12 can drive the measuring plate 7 to always be in contact with the hinge point of the corresponding first connecting rod 4 and the second connecting rod 5 through the sliding plate 8.

[0018] The crossbar 2 has a second sliding groove 201, and the first slider 6, the second slider 14, and the bidirectional lead screw 3 are all installed in the second sliding groove 201. Guide grooves 202 are provided on both sides of the second sliding groove 201. Fixing blocks 15 are fixedly installed on both sides of the first slider 6 and the second slider 14, and the fixing blocks 15 are slidably locked in the corresponding guide grooves 202. The first slider 6 and the second slider 14 can slide along the guide grooves 202 in the second sliding groove 201 in the crossbar 2 through the fixing blocks 15.

[0019] A knob 10 is fixedly installed at one end of the bidirectional lead screw 3, and the knob 10 is used to drive the bidirectional lead screw 3 to rotate.

[0020] The storage assembly 16 includes a storage box 1601, a vertical rod 1 and a horizontal rod 2 that can be placed inside the storage box 1601, a lid 1602 that is hinged to the storage box 1601, and buckles 1603 that are fixedly installed on both the storage box 1601 and the lid 1602, and the two buckles 1603 can be engaged together. A handle 1604 is fixedly installed on the storage box 1601. The storage assembly 16 can store and protect the measuring device. After use, the measuring device can be stored in the storage box 1601 and the lid 1602 can be closed. Then, the buckles 1603 on the lid 1602 can be engaged with the buckles 1603 on the storage box 1601 to secure the lid 1602. The handle 1604 makes it easy to carry the device.

[0021] Working principle: When using this utility model, the crossbar 2 can be inserted into the pipe to be measured. The knob 10 drives the double-acting screw 3 to rotate. The double-acting screw 3 drives the first slider 6 and the second slider 14 to slide towards each other in the second groove 201 of the crossbar 2. The sliding of the first slider 6 and the second slider 14 towards each other drives the two measuring plates 7 to move synchronously in opposite directions through the first connecting rod 4 and the second connecting rod 5 until the measuring plates 7 contact the inner wall of the pipe. The measuring plates 7 drive the corresponding sliding plates 8 to move synchronously along the fixed rod 11 in the first groove 101 of the vertical rod 1 and compress the spring 12. The spring 12 can drive the measuring plates 7 to always contact the hinge point of the corresponding first connecting rod 4 and the second connecting rod 5 through the sliding plates 8. The sliding plates 8 drive the pointer 13 to move to the corresponding scale line 9, so as to accurately measure the inner diameter of the pipe.

[0022] After use, the measuring device can be stored in the storage box 1601 and the box cover 1602 can be closed. Then, the buckle 1603 on the box cover 1602 can be fastened to the buckle 1603 on the storage box 1601 to fix the box cover 1602. The handle 1604 makes it easy to carry the device.

[0023] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0024] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A pipe inner diameter measuring device, comprising a vertical rod (1) and a housing assembly (16), characterized in that: A horizontal bar (2) is fixedly installed on one side of the vertical rod (1). A first slider (6) and a second slider (14) are symmetrically distributed and slidably installed inside the horizontal bar (2). A double-acting screw (3) is rotatably installed inside the horizontal bar (2), and the double-acting screw (3) is threaded into the first slider (6) and the second slider (14). A first connecting rod (4) is hinged to both the upper and lower ends of the first slider (6). A second connecting rod (5) is hinged to both the upper and lower ends of the second slider (14). One end of the first connecting rod (4) is hinged to one end of the corresponding second connecting rod (5). Two symmetrically distributed sliding plates (8) are slidably installed inside the vertical rod (1). A measuring plate (7) is fixedly installed at one end of each of the two sliding plates (8). The hinge point of the corresponding first connecting rod (4) and the second connecting rod (5) can contact the corresponding measuring plate (7). A scale line (9) is fixedly provided on one side of the vertical rod (1). A pointer (13) is fixedly installed at one end of each of the two sliding plates (8).

2. The pipe inner diameter measuring device as described in claim 1, characterized in that, The vertical rod (1) has two symmetrically distributed first sliding grooves (101) inside, and the sliding plate (8) is slidably installed in the corresponding first sliding groove (101).

3. The pipe inner diameter measuring device as described in claim 2, characterized in that, A fixing rod (11) is fixedly installed in each of the two first slide grooves (101), and the fixing rod (11) is inserted through the corresponding sliding plate (8).

4. The pipe inner diameter measuring device as described in claim 3, characterized in that, Springs (12) are fitted on both of the fixed rods (11), and one end of the spring (12) is fixedly connected to the corresponding sliding plate (8).

5. The pipe inner diameter measuring device as described in claim 1, characterized in that, The crossbar (2) has a second slide groove (201) inside, and the first slider (6), the second slider (14), and the bidirectional lead screw (3) are all installed in the second slide groove (201).

6. The pipe inner diameter measuring device as described in claim 5, characterized in that, The second slide groove (201) has guide grooves (202) on both sides. The first slider (6) and the second slider (14) are fixedly installed with fixing blocks (15) on both sides, and the fixing blocks (15) are slidably locked in the corresponding guide grooves (202).

7. The pipe inner diameter measuring device as described in claim 1, characterized in that, A knob (10) is fixedly installed at one end of the bidirectional lead screw (3).

8. The pipe inner diameter measuring device as described in claim 1, characterized in that, The storage component (16) includes a storage box (1601), the vertical rod (1) and the horizontal rod (2) can be placed inside the storage box (1601), a lid (1602) is hinged to the storage box (1601), and buckles (1603) are fixedly installed on both the storage box (1601) and the lid (1602), and the two buckles (1603) can be engaged together. A handle (1604) is fixedly installed on the storage box (1601).

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