Pipeline diameter measuring device

Abstract

The utility model discloses a pipeline diameter measuring device which comprises a measuring scale assembly, the measuring scale assembly comprises a measuring plate, a measuring scale is arranged along the length direction of the measuring plate, one end of the measuring plate is provided with a fixing assembly, and the fixing assembly comprises a base, two telescopic rods and two abutting rollers. The center of the base is rotationally mounted at the end part of the measuring plate through a rotating shaft; two sliding grooves penetrating through the base are vertically formed in the base in a front-back parallel mode, the two telescopic rods are vertically clamped in the corresponding sliding grooves in a sliding mode respectively, and the ends, away from each other, of the two telescopic rods stretch out of the corresponding sliding grooves from the upper end and the lower end respectively and are perpendicularly provided with abutting rollers. Racks are arranged on the sides, close to each other, of the telescopic rods in the length direction. A communicating groove communicating with the two sliding grooves is formed in the middle of the base, and a driving piece driving the two telescopic rods to synchronously and reversely move is arranged in the communicating groove. The device is simple in structure and convenient to use, the maximum diameter of the pipe orifice can be quickly and effectively found for fixation, measurement is more accurate, and the measurement efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the field of pipeline construction measuring equipment, and particularly relates to a pipeline diameter measuring device. Background Art

[0002] When reconstructing or repairing municipal drainage pipelines, in order to ensure the consistency of pipe diameters, it is necessary to measure the diameters of old pipelines. The commonly used measurement method is for workers to directly measure by using a tape measure to fit the pipe orifice, which is time-consuming and laborious, and often unable to find and measure the maximum diameter of the pipe orifice, resulting in inaccurate measurement. Some existing pipeline diameter measuring instruments have complex structures, are very inconvenient to use and carry, and affect the detection efficiency. Content of the Utility Model

[0003] In order to solve the deficiencies of the prior art, the utility model aims to provide a pipeline diameter measuring device, which has a simple structure, is convenient to use, can quickly and effectively find the maximum diameter of the pipe orifice for fixation, and the measurement is more accurate, thus significantly improving the measurement efficiency.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A pipeline diameter measuring device includes a measuring scale assembly. The measuring scale assembly includes a measuring plate, a measuring scale is arranged along the length direction of the measuring plate, and a fixing assembly is arranged at one end of the measuring plate. The fixing assembly includes a base, two telescopic rods and two abutting rollers. The center of the base is rotatably installed at the end of the measuring plate through a rotating shaft; two vertically parallel through grooves are arranged in the front and back of the base, and the two telescopic rods are respectively vertically and slidably clamped in the corresponding grooves. The mutually remote ends of the two telescopic rods respectively extend out of the corresponding grooves from the upper end and the lower end and are perpendicularly installed with abutting rollers; racks are arranged along the length direction on the mutually close sides of the telescopic rods; a communicating groove communicating the two grooves is arranged in the middle of the base, and a driving member for driving the two telescopic rods to move synchronously and reversely is arranged in the communicating groove. The driving member includes a gear, a rotating shaft and a hand wheel. The gear is rotatably installed in the communicating groove and meshes with the racks on the two telescopic rods; the rotating shaft is coaxially fixedly connected between the gear and the hand wheel outside the base.

[0006] Preferably, a locking assembly matched with the driving assembly is further arranged in the communicating groove. The locking assembly includes a tension spring, a ratchet and a ratchet tooth. The ratchet is coaxially fixedly connected to the middle of the rotating shaft. The middle of the ratchet tooth is rotatably installed in the communicating groove. One end of the ratchet tooth meshes with the ratchet and is connected with the tension spring in the communicating groove, and the other end is fixedly connected with a pressing plate, and the pressing plate extends outwards through a dial hole opened on the base.

[0007] Preferably, a plurality of jacks are arranged on the upper side of the base centered on the rotating shaft, and a pin is horizontally penetrated through the measuring plate, and the end of the pin is inserted into the jacks.

[0008] Preferably, the jacks are arranged at equal angles.

[0009] Preferably, a strip hole is provided in the middle of the measuring plate along its length, a slider is provided in the strip hole, the ruler is provided at the strip hole along the length, and a pointer cooperating with the ruler is provided on the slider.

[0010] Preferably, the slider is of I-shaped design, the sliding part in the middle of the slider is slidably clamped in the strip hole, and the limiting parts vertically fixed at both ends of the sliding part are arranged on the front and rear outer sides of the strip hole; a positioning block is also fixed on the limiting part on the rear side, and the length of the positioning block is not greater than the width of the gap between the measuring plate and the substrate.

[0011] Preferably, the pointer is fixed on the limiting portion at the front side, a locking bolt is horizontally mounted on the side of the limiting portion, and the end of the locking bolt abuts against the outer wall of the measuring plate.

[0012] The beneficial effects of the utility model are:

[0013] 1. After the fixing assembly of the utility model is fixed against the inner diameter of the pipe mouth, the measuring plate is rotated around the rotating shaft to the position to be detected, and the pin penetrates the measuring plate and is inserted into the socket on the machine base, so that the measuring plate can be effectively fixed, thereby effectively detecting the pipe mouth radius of the pipeline.

[0014] 2. The rotation of the handwheel drives the gear to rotate through the rotating shaft, and then drives the two telescopic rods to move vertically away from each other through meshing with the racks on both sides. The two telescopic rods extend out of the slide slot and drive the corresponding abutment rollers to move away from each other and abut against the inner wall of the pipe mouth. When the two abutment rollers are not abutting against the maximum diameter of the pipe mouth, the abutment rollers will roll along the inner wall of the pipe mouth until the two abutment rollers abut at the maximum diameter of the pipe mouth. At this time, the rotating shaft is at the center of the pipe mouth. Then the distance between the rotating shaft and the inner edge of the pipe can be measured using the measuring plate to effectively detect the radius of the pipe.

[0015] 3. When the handwheel drives the gear to rotate through the shaft, the gear can only rotate in one direction by using the tension spring, ratchet and ratchet teeth. After the abutment roller is installed in place, it can be locked and fixed to prevent the abutment roller from loosening again after being installed in place, thereby improving the stability of the device. When the measurement is completed and the fixed component is unlocked, the ratchet is rotated by pressing the pressure plate to unlock the meshing with the ratchet. At this time, the handwheel can be rotated in the opposite direction, and the two abutment rollers can be driven close to each other by the telescopic rod to remove the fixed component from the pipe mouth.

[0016] 4. When the back side of the measuring plate is in contact with the pipe mouth, the slider in the strip hole is moved to make the positioning block on the back side contact the inner wall of the pipe mouth. The diameter of the pipe mouth can be detected by reading the scale corresponding to the pointer aligned with the outer side of the positioning block on the ruler.

[0017] 5. The locking of the slider by the locking bolt can prevent the slider from moving and affecting the reading accuracy when reading the scale of the pointer corresponding to the measuring ruler. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a side cross-sectional view of the fixing component of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the locking component of the present utility model;

[0021] Figure 4 is a schematic structural diagram of the slider of the present utility model. Detailed Embodiment

[0022] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only for explaining the present utility model and do not limit the scope of use of the present utility model.

[0023] As Figures 1-4 shown, the present utility model provides a pipeline diameter measuring device, which includes a measuring ruler assembly. The measuring ruler assembly includes a measuring plate, and a measuring ruler 4 is arranged along the length direction of the measuring plate 2. One end of the measuring plate 2 is provided with a fixing component, and the fixing component is used to abut and fix at the inner diameter of the pipe orifice. Among them, the fixing component includes a base 1, two telescopic rods 11 and two abutting rollers 12. The front side center of the base 1 is rotatably installed at the end of the measuring plate 2 through a rotating shaft 13. And a plurality of jacks 14 are arranged on the upper side of the base 1 at equal angles with the rotating shaft 13 as the center. A pin 21 is horizontally movably penetrated through the measuring plate 2 in the front-back direction, and the end of the pin 21 is inserted into the jack 14. After the fixing component abuts and fixes at the inner diameter of the pipe orifice, the measuring plate 2 is rotated to the position to be detected with the rotating shaft 13 as the center, and then the pin 21 penetrates through the measuring plate 2 and is inserted into the jack 14 on the machine base, so as to effectively fix the measuring plate 2, and the radius of the pipe orifice can be effectively detected. Thus, by rotating the measuring plate 2, multi-point diameter measurement detection can be carried out at different positions of the pipeline more accurately. At the same time, when carrying, the measuring plate 2 and the base 1 can be rotated to a parallel state, reducing the volume of the device and making it more convenient to carry.

[0024] Inside the base 1, two vertical chutes 10 that penetrate the base 1 are provided in parallel front and back. Two telescopic rods 11 are vertically and slidably clamped in the corresponding chutes 10 respectively. The mutually remote ends of the two telescopic rods 11 extend out of the corresponding chutes 10 from the upper end and the lower end respectively, and a contact roller 12 is vertically installed at the back. Rack bars 111 are provided on the mutually close sides of the telescopic rods 11 along their lengths. In the middle of the base 1, a communication groove 101 that communicates the two chutes 10 is provided. A driving member for driving the two telescopic rods 11 to move synchronously and in opposite directions is provided in the communication groove 101. The driving member includes a gear 6453, a rotating shaft 52, and a handwheel 51. The gear 6453 is rotatably installed in the communication groove 101 and meshes with the rack bars 111 on the two telescopic rods 11. The rotating shaft 52 is coaxially and fixedly connected between the gear 6453 and the handwheel 51 outside the base 1. The rotating shafts 13 at the rotating connection of the rotating shaft 52 and the measuring plate 2 are both located at the central position of the base 1.

[0025] When the handwheel 51 rotates, it drives the gear 6453 to rotate through the rotating shaft 52. Then, by meshing with the rack bars 111 on both sides, it drives the two telescopic rods 11 to move vertically away from each other. The two telescopic rods 11 extend out of the chutes 10 and drive the corresponding contact rollers 12 to move away from each other and contact the inner wall of the pipe orifice. When the two contact rollers 12 do not contact the maximum diameter of the pipe orifice, the contact rollers 12 will roll along the inner wall of the pipe orifice until the two contact rollers 12 contact the maximum diameter of the pipe orifice. At this time, the rotating shaft 13 is located at the central position of the pipe orifice. Then, by using the measuring plate 2 to measure the distance between the rotating shaft 13 and the inner edge of the pipe, the radius of the pipe can be effectively detected.

[0026] A locking component that cooperates with the driving component is also provided in the communication groove 101. The locking component includes a tension spring 63, a ratchet wheel, and a ratchet tooth 62. The ratchet wheel is coaxially and fixedly connected to the middle of the rotating shaft 52. The middle of the ratchet tooth 62 is rotatably installed in the communication groove 101. One end of the ratchet tooth 62 meshes with the ratchet wheel and is connected to the tension spring 63 in the communication groove 101. The other end is vertically and fixedly connected with a pressure plate 61. The end of the pressure plate 61 movably penetrates through a dial hole (not shown in the figure) opened on the base 1 and extends outwards. When the handwheel 51 drives the gear 6453 to rotate through the rotating shaft 13, the cooperation of the tension spring 63, the ratchet wheel, and the ratchet tooth 62 can make the gear 6453 rotate only in one direction. After the contact rollers 12 are contact-installed in place, they can be locked and fixed to prevent the contact rollers 12 from loosening again after being contact-installed in place, thereby improving the stability of the device. When unlocking the fixing component after measurement, the ratchet tooth 62 is pressed to rotate by the pressure plate 61 to unlock the meshing with the ratchet wheel. At this time, the handwheel 51 can be rotated in the reverse direction, and the two contact rollers 12 are driven to approach each other by the telescopic rods 11, and the fixing component can be removed from the pipe orifice.

[0027] A strip hole is formed in the middle of the measuring plate 2 along the longitudinal direction, a slider 3 is provided in the strip hole, a ruler 4 is provided at the strip hole along the longitudinal direction, and a pointer 33 is provided on the slider 3 to cooperate with the ruler 4. The initial measuring range of the ruler 4 starts from the center of the rotating shaft 13 and then extends to the end of the measuring plate 2.

[0028] The slider 3 is of I-shaped design. The sliding part 32 in the middle of the slider 3 is slidably clamped in the strip hole. The limiting parts 31 vertically fixed at both ends of the sliding part 32 are arranged on the front and rear outer sides of the strip hole, so that the middle sliding part 32 can be effectively limited. The pointer 33 is fixed on the limiting part 31, and the pointer 33 is aligned with the outer side of the positioning block 34. A positioning block 34 is also fixed on the limiting part 31 on the rear side. The length of the positioning block 34 is not greater than the width of the gap between the measuring plate 2 and the base plate to avoid affecting the rotation of the measuring plate 2 on the base 1 with the rotating shaft 13 as the center. When the rear side of the measuring plate 2 abuts against the pipe mouth, the positioning block 34 on the rear side is abutted against the inner wall of the pipe mouth by moving the slider 3 in the strip hole, and the scale corresponding to the pointer 33 aligned with the outer side of the positioning block 34 on the ruler 4 can be read to complete the detection of the pipe mouth radius.

[0029] A locking bolt 35 is horizontally installed on the side of the limit portion 31, and the end of the locking bolt 35 abuts against the outer wall of the measuring plate 2. The locking bolt 35 locks the slider 3 to prevent the slider 3 from moving and affecting the reading accuracy when reading the scale 4 corresponding to the pointer 33.

[0030] When using the utility model, first place the rear side of the measuring plate 2 against the opening of the pipe, then rotate the hand wheel 51 to drive the two telescopic rods 11 to extend outward and drive the abutment roller 12 to abut against the maximum diameter of the inner diameter of the pipe, then rotate the measuring plate 2 around the rotating shaft 13 to rotate it to the position required for detection, move the slider 3 to make the rear positioning block 34 abut against the inner diameter of the pipe, and tighten the locking bolt 35 to measure and read the pipe diameter through the scale indicated by the pointer 33 on the ruler 4, which is very convenient to use.

[0031] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A pipeline diameter measuring device, comprising a measuring scale assembly, characterized in that: The measuring scale assembly includes a measuring plate, a measuring scale is provided along the length direction of the measuring plate, a fixing assembly is provided at one end of the measuring plate, the fixing assembly includes a base, two telescopic rods and two abutting rollers, the center of the base is rotatably installed at the end of the measuring plate through a rotating shaft; two vertically parallel through grooves are provided in the front and rear of the base, the two telescopic rods are respectively vertically slidably clamped in the corresponding grooves, and the mutually remote ends of the two telescopic rods respectively extend out of the corresponding grooves from the upper end and the lower end and are vertically installed with abutting rollers; racks are provided on the mutually close sides of the telescopic rods along their length directions; a communicating groove communicating the two grooves is provided in the middle of the base, and a driving member for driving the two telescopic rods to move synchronously and in opposite directions is provided in the communicating groove, the driving member includes a gear, a rotating shaft and a handwheel, the gear is rotatably installed in the communicating groove and meshes with the racks on the two telescopic rods; the rotating shaft is coaxially fixed between the gear and the handwheel outside the base.

2. The pipe diameter measuring device according to claim 1, wherein: A locking assembly matched with the driving assembly is further provided in the communicating groove, the locking assembly includes a tension spring, a ratchet wheel and a ratchet tooth, the ratchet wheel is coaxially fixed in the middle of the rotating shaft, the middle of the ratchet tooth is rotatably installed in the communicating groove, one end of the ratchet tooth meshes with the ratchet wheel and is connected with the tension spring in the communicating groove, and the other end is fixedly connected with a pressing plate, and the pressing plate extends outwards through a dial hole provided on the base.

3. The pipeline diameter measuring device according to claim 1, wherein: A plurality of jacks are provided on the upper side of the base centered on the rotating shaft, and a pin is horizontally penetrated through the measuring plate, and the end of the pin is inserted into the jacks.

4. The pipeline diameter measuring device according to claim 3, characterized in that: The jacks are arranged at equal angles.

5. The pipe diameter measuring device according to claim 1, characterized in that: A strip hole is vertically penetrated through the middle of the measuring plate along its length direction, a slider is slidably clamped in the strip hole, the measuring scale is arranged at the strip hole along the length direction, and a pointer matched with the measuring scale is provided on the slider.

6. The pipe diameter measuring device according to claim 5, characterized in that: The slider is designed in an I shape, the sliding part in the middle of the slider is slidably clamped in the strip hole, and the limiting parts vertically fixed at both ends of the sliding part are arranged on the front and rear outer sides of the strip hole; a positioning block is further fixed on the rear limiting part, and the length of the positioning block is not greater than the width of the gap between the measuring plate and the base plate.

7. The pipeline diameter measuring device according to claim 6, characterized in that: The pointer is fixedly arranged on the front limiting part, and a locking bolt is horizontally installed on the side of the limiting part, and the end of the locking bolt abuts against the outer wall of the measuring plate.

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