Flange bolt hole spacing positioning device for large valves and its use method

Abstract

A device for locating flange bolt hole spacing for large valves comprises multiple device baseplates, each of which is provided with a driving gear and a driven gear, with a transmission belt providing a synchronous transmission connection between the driving gear and the driven gear; a keyway for connecting to a drive device is provided on the driving gear; and multiple bolt positioning mechanisms are provided on the driven gear. Each bolt positioning mechanism comprises a pusher block and a caliper, wherein the driven gear is provided with multiple arcuate grooves evenly distributed circumferentially, the pusher block is disposed within the arcuate grooves, and the caliper is disposed at one end of the pusher block and positioned toward the center of the driven gear. The present invention employs this structure to rapidly locate flange bolt hole positions in valves with larger diameters, resolving the problem of inaccurate bolt hole measurement data resulting from the inconvenience of conventional measurement tools.

Description

Technical Field

[0001] The present invention relates to the technical field of large valve maintenance, in particular to a flange bolt hole spacing positioning device for a large valve and a use method thereof. Background Art

[0002] In the water supply industry, valves are typically large in diameter, resulting in correspondingly larger flanges and flange holes. Conventional tools are particularly incapable of directly measuring the relative positions of flange holes on valves exceeding one meter in diameter. When replacing large valves, the holes in the old pipe flanges must be located to facilitate the custom-made replacement of the new valve. Furthermore, after the new valve is custom-made, the flange holes must be located and dimensionally verified to avoid misalignment during the replacement process. However, existing technologies have been unable to accurately locate flange bolt holes before flange repair and replacement. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a flange bolt hole spacing positioning device for large valves and a method of using the same, which can achieve the purpose of quickly positioning the flange bolt hole positions of valves with larger diameters, and solve the problem of inaccurate bolt hole measurement data caused by the inconvenience of conventional tools.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a flange bolt hole spacing positioning device for a large valve, comprising a plurality of device base plates, each of which is provided with a driving gear and a driven gear, wherein the driving gear and the driven gear are synchronously connected via a transmission belt;

[0005] The driving gear is provided with a keyway for connecting with the driving device;

[0006] The driven gear is provided with a plurality of bolt positioning mechanisms;

[0007] A single bolt positioning mechanism includes a propulsion block and a caliper. A plurality of arc grooves are evenly distributed circumferentially on the driven gear. The propulsion block is arranged in the arc groove. The caliper is arranged on one end of the propulsion block and is arranged toward the center position of the driven gear.

[0008] In a preferred solution, a plurality of the device substrates are connected by connecting rods to form a whole.

[0009] In a preferred solution, two connecting rods are provided on a single device substrate, and the ends of the two connecting rods on two adjacent device substrates are hingedly connected by a connecting pin.

[0010] In a preferred solution, a convex column is provided on the top surface of the propulsion block, and the convex column extends into the arc-shaped groove.

[0011] In a preferred solution, a caliper mounting groove is provided at the end of the propulsion block, and the caliper is inserted and fixed in the caliper mounting groove.

[0012] The method for using the flange bolt hole spacing positioning device based on the above-mentioned large valve specifically includes the following steps:

[0013] 1) Install the device on the flange bolts of large valves, ensuring that the bolt heads of the flange bolts are located at the center of the multiple calipers in the middle of the driven gear;

[0014] 2) Connecting the driving gear with the electric drive device and relying on the electric drive device to drive the driving gear to achieve forward and reverse rotation;

[0015] 3) The driving gear cooperates with the transmission belt to drive the driven gear to rotate;

[0016] 4) During the rotation of the driven gear, the arc groove rotates around the center of the driven gear and realizes the movement and propulsion of the propulsion block toward the center position of the driven gear (3);

[0017] 5) As the push block moves toward the center of the driven gear, multiple calipers synchronously contact and tighten the bolt heads of the flange bolts;

[0018] 6) Repeat steps 1)-5) to position multiple flange bolts of large valves.

[0019] In a preferred solution, after step 6) is completed, the two connecting rods on a single positioning device are rotated so that the ends of the two connecting rods between adjacent positioning devices overlap, and are hinged by a connecting pin and then tightened and fixed.

[0020] In a preferred solution, after the plurality of positioning devices complete the positioning of the flange bolts and are connected to form a whole through a connecting rod, the entire device is manually withdrawn backwards and the position results of all flange bolts of the large valve are obtained.

[0021] The present invention provides a flange bolt hole spacing positioning device for a large valve and a method for using the same. By adopting the above structure and method, the device has the following beneficial effects:

[0022] (1) The purpose of quickly determining the position of flange bolt holes of large-diameter valves is achieved, solving the measurement inconvenience of conventional tools;

[0023] (2) The use of multiple push blocks in conjunction with calipers to achieve synchronous movement and convergence toward the center ensures that the bolt head is located at the center of the driven gear, improves the measurement accuracy of the relative positions of multiple bolt holes, and provides accurate data reference for subsequent valve customization. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and examples:

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the driven gear structure of the present invention.

[0027] Figure 3 It is a structural schematic diagram of the bolt positioning mechanism of the present invention.

[0028] Figure 4 It is a schematic diagram of the propulsion block structure of the present invention.

[0029] In the figure: device base plate 1, driving gear 2, driven gear 3, transmission belt 4, bolt positioning mechanism 5, arc groove 6, propulsion block 7, caliper 8, caliper mounting groove 9, boss 10, connecting rod 11, connecting pin 12. DETAILED DESCRIPTION

[0030] Example 1:

[0031] like Figure 1-3 A flange bolt hole spacing positioning device for a large valve includes a plurality of device substrates 1, each of which is provided with a driving gear 2 and a driven gear 3, and a transmission belt 4 is used to achieve synchronous transmission connection between the driving gear 2 and the driven gear 3;

[0032] The driving gear 2 is provided with a keyway for connecting with the driving device;

[0033] The driven gear 3 is provided with a plurality of bolt positioning mechanisms 5;

[0034] The single bolt positioning mechanism 5 includes a push block 7 and a caliper 8. A plurality of arc grooves 6 are evenly distributed circumferentially on the driven gear 3. The push block 7 is arranged in the arc groove 6. The caliper 8 is arranged on one end of the push block 7 and is arranged toward the center position of the driven gear 3.

[0035] In a preferred solution, a plurality of the device substrates 1 are connected by connecting rods 11 to form a whole.

[0036] In a preferred solution, two connecting rods 11 are provided on a single device substrate 1 , and the ends of the two connecting rods 11 on two adjacent device substrates 1 are hingedly connected via a connecting pin 12 .

[0037] Example 2:

[0038] like Figure 4 On the basis of Example 1, a boss 10 is provided on the top surface of the propulsion block 7 , and the boss 10 extends into the arc-shaped groove 6 .

[0039] In a preferred solution, a caliper mounting groove 9 is provided at the end of the propulsion block 7 , and the caliper 8 is inserted and fixed in the caliper mounting groove 9 .

[0040] Example 3:

[0041] The method for using the flange bolt hole spacing positioning device for the aforementioned large valve comprises the following steps:

[0042] 1) Install the device on the flange bolts of a large valve, ensuring that the bolt heads are located at the center of the multiple calipers 8 in the middle of the driven gear 3;

[0043] 2) Connecting to the driving gear 2 through an electric drive device, and relying on the electric drive device to drive the driving gear 2 to achieve forward and reverse rotation;

[0044] 3) The driving gear 2 cooperates with the transmission belt 4 to drive the driven gear 3 to rotate;

[0045] 4) During the rotation of the driven gear 3, the arcuate groove 6 rotates around the center of the driven gear 3 and realizes the movement and propulsion of the propulsion block 7 toward the center position of the driven gear 3;

[0046] 5) As the push block 7 moves toward the center of the driven gear 3, the multiple calipers 8 synchronously contact and tighten the bolt heads of the flange bolts;

[0047] 6) Repeat steps 1)-5) to position multiple flange bolts of large valves.

[0048] In a preferred solution, after step 6) is completed, the two connecting rods 11 on a single positioning device are rotated so that the ends of the two connecting rods 11 between adjacent positioning devices overlap, and are hinged by the connecting pin 12 and then tightened and fixed.

[0049] In a preferred solution, after the plurality of positioning devices complete the positioning of the flange bolts and are connected to form a whole through the connecting rod 11, the entire device is manually withdrawn backwards to obtain the position results of all flange bolts of the large valve.

[0050] In the present invention, an electric wrench can be used as the electric drive device that cooperates with the driving gear 2. The diameter of the driving gear 2 is designed to be smaller than the diameter of the driven gear 3, and the difference between the two can be designed to be as large as possible to reduce the transmission ratio between the two gears. During the rapid rotation of the driving gear 2, the slow rotation of the driven gear 3 can be ensured. During this process, the propulsion block 7 can achieve slow propulsion movement. When the propulsion block 7 releases the bolt head of the flange bolt, the electric drive device can be stopped, avoiding the difficulty of subsequent device withdrawal due to the clamping between the caliper 8 and the flange bolt.

[0051] In addition, the center of the circle where the arc groove 6 is located is most likely designed to be located on the inner circle of the driven gear 3 to ensure that the propulsion block 7 does not move too quickly during the rotation of the driven gear 3, and to avoid the problem of the propulsion block 7 being stuck and unable to achieve the propulsion action.

Claims

1. A flange bolt hole spacing positioning device for a large valve, comprising a plurality of device base plates (1), characterized in that: A driving gear (2) and a driven gear (3) are provided on a single device substrate (1), and a transmission belt (4) is used to realize synchronous transmission connection between the driving gear (2) and the driven gear (3); The driving gear (2) is provided with a keyway for connecting to a driving device; The driven gear (3) is provided with a plurality of bolt positioning mechanisms (5); The single bolt positioning mechanism (5) comprises a propulsion block (7) and a caliper (8); a plurality of arcuate grooves (6) are evenly distributed in an annular direction on the driven gear (3); the propulsion block (7) is arranged in the arcuate groove (6); and the caliper (8) is arranged on one end of the propulsion block (7) and is arranged toward the center of the driven gear (3); A plurality of the device substrates (1) are connected via connecting rods (11) to form a whole; Two connecting rods (11) are provided on a single device substrate (1), and the ends of the two connecting rods (11) on two adjacent device substrates (1) are hingedly connected via a connecting pin (12); The top surface of the propulsion block (7) is provided with a convex column (10), and the convex column (10) extends into the arc-shaped groove (6); A caliper mounting groove (9) is provided at the end of the propulsion block (7), and the caliper (8) is inserted and fixed in the caliper mounting groove (9).

2. The method for using the flange bolt hole spacing positioning device for a large valve according to claim 1 is characterized in that The following steps are involved: 1) Install the device on the flange bolts of a large valve, ensuring that the bolt head of the flange bolt is located at the center of the multiple calipers (8) in the middle of the driven gear (3); 2) connecting to the driving gear (2) through an electric drive device, and relying on the electric drive device to drive the driving gear (2) to achieve forward and reverse rotation; 3) The driving gear (2) cooperates with the transmission belt (4) to drive the driven gear (3) to rotate; 4) During the rotation of the driven gear (3), the arc groove (6) rotates around the center of the driven gear (3) and realizes the movement and propulsion of the propulsion block (7) toward the center position of the driven gear (3); 5) During the movement and pushing process of the pushing block (7) toward the center position of the driven gear (3), the plurality of calipers (8) synchronously contact and tighten the bolt heads of the flange bolts; 6) Repeat steps 1)-5) to position multiple flange bolts of large valves.

3. The method for using the flange bolt hole spacing positioning device for a large valve according to claim 2, characterized in that: After step 6) is completed, the two connecting rods (11) on a single positioning device are rotated so that the ends of the two connecting rods (11) between adjacent positioning devices overlap, and are hinged by the connecting pin (12) and then tightened and fixed.

4. The method for using the flange bolt hole spacing positioning device for a large valve according to claim 3, characterized in that: After the plurality of positioning devices complete the positioning of the flange bolts and are connected to form a whole through the connecting rod (11), the entire device is manually withdrawn backwards and the position results of all the flange bolts of the large valve are obtained.

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