Circle center measuring device

Abstract

The utility model relates to the field of circle center measurement, and discloses a circle center measuring device, which comprises a measuring unit, the measuring unit comprises a first telescopic piece and a second telescopic piece arranged at the end part of the first telescopic piece, and the first telescopic piece is fixedly arranged at the central position of the second telescopic piece through a second bolt; the circular plugging door measures the position of the circle center through the measuring unit; the device has the advantages that the fourth square pipes on the two sides can be ensured to move to the same position through scale marks on the fourth square pipes, the first telescopic piece can be ensured to be located at the midperpendicular of the second telescopic piece all the time when the blocking piece is attached to the outer ring of the circular plugging door through the blocking piece, and the sealing effect is good. Workers can conveniently measure the position of the circle center of the circular blocking door without checking scales for many times, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of center measurement, and in particular to a center measurement device. Background Technology

[0002] To prevent flooding of power plants, hydropower plants should establish a register of bolts in critical areas, clearly marking their original positions and conditions and developing measures to prevent loosening. In hydropower enterprises, tracing the outlines of bolts on pressure-bearing equipment is a crucial measure to observe for loosening or deformation and prevent flooding of power plants and equipment. However, in practice, except for bolts in square pressure-bearing areas, the conventional method of tracing with a steel ruler for some circular pressure-bearing components (such as volute access doors and manholes for pressurized gas cylinders) cannot determine the center of the circle, resulting in irregular and uneven traces that hinder visual observation of bolt loosening.

[0003] In existing technologies, measuring the center of a circular sealing gate requires constant attention to the scales on both sides, which consumes a lot of effort and reduces work efficiency. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is that when measuring the center of a circular blocking door, it is necessary to pay attention to the scales on both sides at all times, which requires a lot of effort and reduces work efficiency.

[0005] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a center measuring device, which includes a measuring unit, the measuring unit including a first telescopic member and a second telescopic member installed at the end of the first telescopic member, the first telescopic member being fixedly installed at the center position of the second telescopic member by a second bolt; a circular sealing door, the circular sealing door measuring the position of the center of the circle by the measuring unit.

[0006] In a preferred embodiment of the center measuring device of this utility model: the first telescopic member includes a first square tube and a second square tube that slides inside the first square tube. The first square tube has a first sliding groove symmetrically opened inside. A through hole is opened on one side of the opening of the first square tube. A retaining ring is fixedly connected to a section of the through hole away from the opening of the first square tube.

[0007] In a preferred embodiment of the center measuring device of this utility model: two first sliders are symmetrically fixedly connected to both sides of the second square tube, the first sliders are slidably engaged with the first slide groove, and a retaining tube is provided through one end of the second square tube, the retaining tube engaging with the retaining ring.

[0008] In a preferred embodiment of the center measuring device of this utility model: the second telescopic component includes a third tube, two second sliding grooves symmetrically opened inside the third tube, two positioning blocks symmetrically fixed to one side of the third tube, and two first bolts symmetrically threaded onto the third tube, wherein the second bolts penetrate the third tube.

[0009] In a preferred embodiment of the center measuring device of this utility model: a threaded hole is provided at the center of one end of the first square tube, and two positioning holes are symmetrically provided at the end of the first square tube located at the threaded hole. The positioning holes are inserted into the positioning block, and the threaded holes are threaded into the second bolt.

[0010] In a preferred embodiment of the center measuring device of this utility model: a fourth square tube is slidably connected inside the third square tube, and second sliders are symmetrically fixedly connected to both sides of the fourth square tube. The second sliders are slidably engaged with the second sliding groove, and a blocking member is provided on one side of the fourth square tube.

[0011] In a preferred embodiment of the center measuring device of this utility model: the blocking component includes a placement groove opened at the bottom of the fourth square tube, two blocks symmetrically fixed on both sides of the placement groove, and a blocking rod that rotates in the placement groove via a rotating shaft.

[0012] In a preferred embodiment of the center measuring device of this utility model: a torsion spring is provided at the rotatable connection between the rotating shaft and the placement groove, and the stop block is made of soft material.

[0013] In a preferred embodiment of the center measuring device of this utility model: the fourth square tube is provided with a scale line on the side away from the blocking member.

[0014] In a preferred embodiment of the center measuring device of this utility model: the fourth square tube and the third third tube are fixed together by a first bolt.

[0015] The beneficial effects of this utility model are as follows: the scale lines on the fourth square tube ensure that the fourth square tubes on both sides move to the same position, and the setting of the blocking member ensures that when the blocking member is in contact with the outer ring of the circular blocking door, the first telescopic member is always located at the vertical line of the second telescopic member, which makes it easier for the staff to measure the position of the center of the circular blocking door without having to check the scale multiple times, thus improving work efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein:

[0017] Figure 1 A schematic diagram of the center measuring device is shown.

[0018] Figure 2 A schematic diagram of the structure of the first telescopic component is shown;

[0019] Figure 3 A schematic diagram of the second telescopic component is shown;

[0020] Figure 4 A partial structural schematic diagram of the second telescopic component is shown;

[0021] Figure 5 The diagram shows the installation of the first telescopic component. Detailed Implementation

[0022] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0024] Example 1

[0025] Reference Figures 1-5 This is the first embodiment of the present invention. This embodiment provides a circle center measuring device, which includes a measuring unit 1. The measuring unit 1 includes a first telescopic member 11 and a second telescopic member 12 installed at the end of the first telescopic member 11. The first telescopic member 11 is fixedly installed at the center position of the second telescopic member 12 by a second bolt 13. A circular blocking door 2 is provided, and the circular blocking door 2 measures the position of the circle center by the measuring unit 1.

[0026] The first telescopic member 11 and the second telescopic member 12 can be connected and fixed by the second bolt 13. The position setting of the second bolt 13 and the threaded hole 118 can ensure that the first telescopic member 11 is fixed on the vertical line of the second telescopic member 12. The second telescopic member 12 can extend to both ends with the same length. The scale line set on it can be used for calibration to ensure that the fixed position of the first telescopic member 11 is always kept at the vertical line of the second telescopic member 12.

[0027] Example 2

[0028] Reference Figures 1-5 This is the second embodiment of the present utility model, which differs from the first embodiment in that it also includes a first telescopic member 11, which includes a first square tube 111 and a second square tube 112 that slides inside the first square tube 111. The first square tube 111 has a first sliding groove 113 symmetrically opened inside. The first square tube 111 has a through hole 114 on one side of the opening. A retaining ring 115 is fixedly connected to the section of the through hole 114 away from the opening of the first square tube 111.

[0029] Furthermore, two first sliders 116 are symmetrically fixedly connected to both sides of the second square tube 112. The first sliders 116 slide in cooperation with the first slide groove 113. A retaining sleeve 117 is provided through one end of the second square tube 112, and the retaining sleeve 117 engages with the retaining ring 115.

[0030] The sliding fit between the first square tube 111 and the second square tube 112 extends the length of the first square tube 111, ensuring that the second square tube 112 and the first square tube 111 can exceed the center of the circle, providing the operator with a more accurate measurement position. The sliding fit between the first slider 116 and the first slide groove 113 limits the sliding length of the second square tube 112, ensuring that it will not slide out of the first square tube 111, thus avoiding assembly difficulties of the device.

[0031] The fit between the through hole 114 and the retaining ring 115 provides a space for the retaining tube 117. After the second square tube 112 is fully inserted into the first square tube 111, the retaining tube 117 will fit against the side of the through hole 114 near the retaining ring 115, and the retaining tube 117 will be locked into the inside of the retaining ring 115, thereby restricting the movement of the second square tube 112.

[0032] Furthermore, the cartridge 117 is cylindrical, allowing staff to insert a drawing pen into it and slide the second square tube 112 when drawing lines after measurement. Due to the sliding cooperation between the second square tube 112 and the first square tube 111, staff can draw lines more easily and the lines drawn are straighter, making it more convenient for staff to use.

[0033] When in use, after the first square tube 111 is connected to the second telescopic member 12, ensure that the second square tube 112 is at the vertical line of the second telescopic member 12. Then, disengage the clamp 117 from the clamp ring 115 and place the drawing pen inside the clamp 117. Then, hold the second telescopic member 12 with one hand to ensure its stability, and press the drawing pen with the other hand and pull the second square tube 112 back and forth to leave drawing marks on the blocking door. After the drawing is completed, change the direction of the device and draw a line that intersects with the first line. The intersection point is the center of the circular blocking door 2.

[0034] Example 3

[0035] Reference Figures 1-5 This is the third embodiment of the present invention. This embodiment is based on the previous two embodiments. This embodiment also includes a second telescopic member 12, which includes a third tube 121, two second sliding grooves 122 symmetrically opened inside the third tube 121, two positioning blocks 123 symmetrically fixed to one side of the third tube 121, and two first bolts 124 symmetrically threaded onto the third tube 121. The second bolts 13 penetrate the third tube 121.

[0036] Furthermore, a threaded hole 118 is provided at the center of one end of the first square tube 111, and two positioning holes 119 are symmetrically provided at the end of the first square tube 111 located at the threaded hole 118. The positioning holes 119 are inserted into the positioning block 123, and the threaded hole 118 is threaded into the second bolt 13.

[0037] The two positioning blocks 123 at the center of the third-party tube 121 can be inserted and matched with the positioning hole 119, which can increase the connection limit between the first square tube 111 and the third-party tube 121. This ensures that after the first square tube 111 and the third-party tube 121 are fixed by the second bolt 13, the first square tube 111 will not rotate relative to the third-party tube 121 during use, causing the connection to loosen and resulting in inaccurate measurement.

[0038] The first bolt 124 is used to fix the fourth square tube 125, ensuring the stability of the fourth square tube 125 after adjustment.

[0039] Specifically, the third tube 121 is internally slidably connected to a fourth tube 125, and the two sides of the fourth tube 125 are symmetrically fixedly connected to second sliders 126. The second sliders 126 are slidably engaged with the second slide groove 122, and a blocking member 127 is provided on one side of the fourth tube 125.

[0040] Furthermore, the fourth square tube 125 has scale lines on the side opposite to the blocking member 127.

[0041] Furthermore, the fourth square tube 125 is fixed to the third square tube 121 by the first bolt 124.

[0042] The sliding engagement between the second slider 126 and the second groove 122 restricts the movement distance of the fourth square tube 125 and ensures that the fourth square tube 125 can slide stably in the third square tube 121.

[0043] The scale lines set on the fourth square tube 125 allow observation of the moving distance of the fourth square tube 125 when it is moved, ensuring that the fourth square tubes 125 on both sides move the same distance, so that the first square tube 111 is always located on the vertical line of the third square tube 121, ensuring accurate measurement of the center of the circle.

[0044] Furthermore, a gear and rack transmission can be used between the two fourth square tubes 125. When one fourth square tube 125 is moved, the other fourth square tube 125 can be moved synchronously, ensuring that the distance moved on both sides is the same. This can save positioning time during use and effectively improve work efficiency. This method is existing technology and will not be elaborated on here.

[0045] Specifically, the blocking member 127 includes a placement groove 1271 opened at the bottom of the fourth square tube 125, two blocks 1274 symmetrically fixed on both sides of the placement groove 1271, and a blocking rod 1273 that rotates in the placement groove 1271 via a rotating shaft 1272.

[0046] Furthermore, a torsion spring is provided at the rotatable connection between the rotating shaft 1272 and the placement groove 1271, and the stop block 1274 is made of soft material.

[0047] The placement slot 1271 provides space for the blocking rod 1273. When the fourth square tube 125 is stored inside the third third tube 121, the blocking rod 1273 will not affect the storage of the fourth square tube 125. The torsion spring at the rotatable connection between the blocking rod 1273 and the placement slot 1271 ensures that the blocking rod 1273 remains perpendicular to the fourth square tube 125 when no force is applied. When the device is placed on the circular sealing door 2, the position of the third third tube 121 can be accurately determined, reducing the workload of the staff in measuring the left and right sides using the scale.

[0048] By setting the stop 1274, the blocking rod 1273 can be engaged, ensuring that when it is in the placement groove 1271, it will not rotate out on its own due to the action of the torsion spring, causing the blocking rod 1273 to slide and rub against the inside of the third tube 121, resulting in wear. This can better protect the blocking rod 1273 and extend the service life of the device.

[0049] When positioning the third-party pipe 121 using the blocking rod 1273, the pressure applied to the third-party pipe 121 by the staff causes the outer ring of the circular sealing door 2 to exert an outward force on the blocking rod 1273. At this time, due to the obstruction of the side wall of the placement groove 1271, the position of the blocking rod 1273 will not change, which can also reduce the concerns of the user.

[0050] In use, firstly, fix the first square tube 111 to the center of the third square tube 121 using the second bolt 13. Then, determine the size of the circular blocking gate 2 to be observed. Next, loosen the first bolt 124 and pull one side of the fourth square tube 125. Determine the extension length of the fourth square tube 125 using the scale lines on the fourth square tube 125. After extending to the appropriate length, rotate the first bolt 124 again to fix the fourth square tube 125. After fixing, rotate the blocking rod 1273 out of the placement slot 1271. Then, pull the other side of the fourth square tube 125 to the same length in the same way, and then... Turn the stop lever 1273 out, then place the device on the outer ring of the operating blocking door, and make both stop levers 1273 fit against the outer ring of the circular blocking door 2. Then separate the clamping cylinder 117 from the clamping ring 115, and put the drawing pen into the clamping cylinder 117. When drawing the line, hold the third tube 121 with one hand to prevent it from moving, and hold the drawing pen with the other hand and move the second tube 112. At this time, a line can be left on the circular blocking door 2. Place it on the circular blocking door 2 in the same way and draw another line that intersects with the first line. After drawing, the device can be removed, and the intersection of the two lines is the center of the circle.

[0051] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A center finding device characterized by: The utility model relates to a kind of measuring unit (1), including first telescopic part (11) and second telescopic part (12) installed at the end of first telescopic part (11), first telescopic part (11) is fixedly installed at the center position of second telescopic part (12) by second bolt (13); Circular plugging door (2) is measured the position of circle center by measuring unit (1). The first telescopic part (11) includes a first square tube (111) and a second square tube (112) sliding inside the first square tube (111). The interior of the first square tube (111) is symmetrically provided with a first sliding groove (113). A through hole (114) is formed on one side of the opening of the first square tube (111). A clamping ring (115) is fixedly connected to the through hole (114) away from the opening of the first square tube (111).

2. The center-finding device of claim 1, wherein: The second square tube (112) is symmetrically fixedly connected with two first sliding blocks (116) on both sides. The first sliding blocks (116) are in sliding cooperation with the first sliding groove (113). A clamping cylinder (117) is penetratingly arranged at one end of the second square tube (112). The clamping cylinder (117) is in clamping cooperation with the clamping ring (115).

3. The center-finding device of claim 2, wherein: The second telescopic part (12) includes a third square tube (121), two second sliding grooves (122) symmetrically formed inside the third square tube (121), two positioning blocks (123) symmetrically fixed on one side of the third square tube (121), and two first bolts (124) symmetrically screwed on the third square tube (121). The second bolt (13) penetrates the third square tube (121).

4. The center-finding device of claim 3, wherein: A threaded hole (118) is formed at the center of one end of the first square tube (111). Two positioning holes (119) are symmetrically formed at one end of the first square tube (111) located at the threaded hole (118). The positioning holes (119) are in plug-in cooperation with the positioning blocks (123). The threaded hole (118) is in threaded cooperation with the second bolt (13).

5. The center-finding device of claim 4, wherein: A fourth square tube (125) is slidingly connected inside the third square tube (121). Two second sliding blocks (126) are symmetrically fixedly connected on both sides of the fourth square tube (125). The second sliding blocks (126) are in sliding cooperation with the second sliding grooves (122). A blocking piece (127) is arranged on one side of the fourth square tube (125).

6. The center-finding device of claim 4 or 5, wherein: The blocking piece (127) includes a placing groove (1271) formed at the bottom of the fourth square tube (125), two stop blocks (1274) symmetrically fixed on both sides of the placing groove (1271), and a blocking rod (1273) rotating in the placing groove (1271) through a rotating shaft (1272).

7. The center-finding device of claim 6, wherein: A torsional spring is arranged at the rotating connection of the rotating shaft (1272) and the placing groove (1271). The stop blocks (1274) are made of soft material.

8. The center-finding device of claim 7, wherein: A scale line is arranged on the side of the fourth square tube (125) away from the blocking piece (127).

9. The center-finding device of claim 8, wherein: The fourth square tube (125) and the third square tube (121) are fixed by the first bolt (124).

10. The center-finding device of claim 9, wherein: ​

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