Method for measuring outer diameter size of annular support of large-diameter rotary reaction furnace barrel

Abstract

The invention relates to the technical field of rotary reaction furnace size measurement, in particular to a method for measuring the outer diameter size of a large-diameter rotary reaction furnace cylinder annular support. According to the structural characteristics of the large-diameter rotary reaction furnace barrel body and the annular support body, the specific structures of the first positioning mechanism and the second positioning mechanism are designed, the positions of the four rolling wheels are adjusted through the first moving mechanism, and the four rolling wheels abut against the edge of the end face of the annular support body to achieve positioning; the receiving device and the transmitting device of the laser distance measuring sensor are connected in a positioning mode through the telescopic rod, the first positioning mechanism and the second positioning mechanism are stably positioned through magnetic attraction, and it is guaranteed that the measured value is stable and accurate; the magnetic attraction positioning device is suitable for magnetic attraction positioning of the check block position of the annular support body or magnetic attraction positioning of the non-check-block position, and compared with a measuring mode through a measuring tape in the prior art, the magnetic attraction positioning device has higher measuring precision.

Description

Technical Field

[0001] The invention relates to the technical field of rotary reactor dimension measurement, and in particular to a method for measuring the outer diameter dimension of a large-diameter rotary reactor cylinder annular bracket. Background Art

[0002] Rotary reactors are widely used in chemical reactions. Most of the chemical reactions in rotary reactors require endothermic reactions. For example, calcium fluoride and sulfuric acid are used to generate hydrogen fluoride through endothermic reaction. The reaction process requires a large amount of heat absorption. Therefore, it is necessary to set an annular heating chamber outside the furnace body. By introducing a heat-conducting medium, such as high-temperature gas, into the heating chamber, heat is transferred to the furnace body to meet the needs of chemical endothermic reactions.

[0003] A Chinese patent with authorization announcement number CN221376263U discloses a rotary reactor roller support device, whose structure includes an annular bracket for supporting a roller body. The annular bracket is an annular member coaxially connected to the outside of the reactor cylinder through a support rod, and is used for heat insulation between the reactor cylinder and the roller body. In order to make the roller body and the annular bracket more convenient and stable to install, a plurality of blocks distributed in a circular array are also provided on the outside of the annular bracket to avoid the risk of axial displacement after the roller body and the annular bracket are installed and connected.

[0004] It can be seen from the structure of the above patent that due to the special position of the annular bracket connected to the reactor cylinder, it is difficult to measure the outer diameter of the annular bracket by conventional measuring means. For example, when measuring with a traditional tape measure, the outer diameter can only be converted by measuring the outer circumference of the annular bracket. On the one hand, the accuracy of the tape measure is limited, there is a certain error in the direction of the tension of the tape measure itself, and the block structure outside the annular bracket is limited, resulting in low measurement accuracy and large errors in this method. Since the diameter of the rotary kiln itself is very large, and the annular bracket is connected to the middle section of the rotary kiln cylinder, it is difficult to accurately measure with a conventional vernier caliper or other conventional measuring means. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method for accurately measuring the outer diameter of an annular bracket in a special structure in which an annular bracket and a stopper are connected to the outside of a reactor cylinder.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A method for measuring the outer diameter of a large-diameter rotary reaction furnace cylinder annular support, the large-diameter rotary reaction furnace cylinder annular support comprising:

[0008] The rotary reaction furnace cylinder body is in the shape of a circular cylinder;

[0009] An annular support body, wherein the annular support is coaxially connected to the outside of the middle section of the rotary reactor cylinder body through a plurality of support rods, and a plurality of stoppers are arranged on the outside of the annular support body in a circumferential array;

[0010] The measuring method is based on a measuring device, which includes a first positioning mechanism and a second positioning mechanism of the same structure; and a laser distance measuring sensor, which includes a transmitting device and a receiving device;

[0011] The first positioning mechanism and the second positioning mechanism have the same structure; the first positioning mechanism comprises a first bracket, a second bracket, a first moving mechanism, a magnetic block body, a second moving mechanism, a first roller, a second roller, a third roller, a fourth roller and a telescopic rod;

[0012] The first bracket and the second bracket are connected via a first moving mechanism, and the first moving mechanism is used to drive the second bracket to move relative to the first bracket along the X direction;

[0013] The magnetic block body is connected to the first bracket through a second moving mechanism, and the second moving mechanism is used to drive the magnetic block body to move along the Y direction;

[0014] The first roller and the second roller are rotatably connected to the first bracket symmetrically, and the axes of the first roller and the second roller are located in the same plane, and the plane is perpendicular to the X direction;

[0015] The third roller and the fourth roller are rotatably connected to the second bracket symmetrically, and the axes of the third roller and the fourth roller are located in the same plane, and the plane is perpendicular to the X direction;

[0016] One end of the telescopic rod is connected to the first bracket, and the telescopic rod is parallel to the X direction;

[0017] The emitting device of the laser distance measuring sensor is connected to the telescopic rod of the first positioning mechanism, the emitting direction of the emitting device is perpendicular to the X direction, and the emitting direction of the emitting device is located in the axial symmetric plane between the first roller and the second roller;

[0018] The receiving device of the laser distance measuring sensor is connected to the telescopic rod of the second positioning mechanism;

[0019] The measuring method comprises the following steps:

[0020] Step 1: Place the first positioning mechanism and the second positioning mechanism at diagonal positions of the annular bracket body respectively;

[0021] Step 2: adjusting the first moving mechanism according to the axial width of the annular bracket body, so that the spacing between the first roller and the third roller is equal to the axial width of the annular bracket body, and the spacing between the second roller and the fourth roller is equal to the axial width of the annular bracket body, so that the first roller, the second roller, the third roller and the fourth roller are respectively pressed against the edge of the annular bracket body;

[0022] Step 3: Adjust the length of the telescopic rod of the first positioning mechanism and the length of the telescopic rod of the second positioning mechanism so that the receiving device and the transmitting device extend outside one end of the rotary reactor body, and the projection directions of the receiving device and the transmitting device are located in the same plane, which is perpendicular to the X direction;

[0023] Step 4: Slowly move the first positioning mechanism or the second positioning mechanism along the circumference of the annular bracket body. When the distance measured by the laser distance sensor is the longest, it means that the first positioning mechanism and the second positioning mechanism are exactly located at the diagonal positions of the annular bracket body. At this time, adjust the second moving mechanism so that the magnetic block body approaches and is adsorbed on the outer circumference of the annular bracket body, and measure the outer diameter of the annular bracket body by the laser distance sensor.

[0024] Step 5: Reversely adjust the second moving mechanism to separate the magnetic block body from the annular bracket body; reversely adjust the first moving mechanism to separate the first roller, the second roller, the third roller and the fourth roller from the annular bracket body.

[0025] Furthermore, in the above-mentioned method for measuring the outer diameter dimension of the annular bracket of the large-diameter rotary reactor cylinder, the first moving mechanism includes a first screw rod and a first guide column; the axial directions of the first screw rod and the first guide column are both in the X direction, one end of the first screw rod is rotatably connected to the first bracket, and the second bracket is provided with a first threaded hole that cooperates with the first screw rod thread; one end of the first guide column is fixedly connected to the first bracket, and the second bracket is provided with a first through hole that slidably cooperates with the first guide column.

[0026] Furthermore, in the above-mentioned method for measuring the outer diameter dimension of the annular bracket of the large-diameter rotary reactor cylinder, the second moving mechanism includes a second screw rod and a second guide column; the axial directions of the second screw rod and the second guide column are both perpendicular to the X direction, one end of the second screw rod is rotatably connected to the magnetic block body, and the first bracket is provided with a second threaded hole that is threadably matched with the second screw rod; one end of the second guide column is fixedly connected to the magnetic block body, and the first bracket is provided with a second through hole that is slidably matched with the second guide column.

[0027] Further, in the above-mentioned method for measuring the outer diameter dimension of the annular support of the large-diameter rotary reactor cylinder, the telescopic rod comprises a guide rail seat, a slide rod and a locking screw;

[0028] The guide rail seat is fixedly connected to the first bracket, the guide rail seat is provided with an X-direction dovetail guide groove, the slide rod is slidably connected to the dovetail guide groove, a third threaded hole is provided on the side of the guide rail seat, and the locking screw is threadedly connected to the third threaded hole.

[0029] Furthermore, in the above-mentioned method for measuring the outer diameter dimension of the annular bracket of the large-diameter rotary reactor cylinder, the first roller, the second roller, the third roller and the fourth roller have the same structure, the first roller is stepped in shape, and the first roller is pressed against the positive corner of the outer end of the annular bracket body through the stepped negative corner.

[0030] Furthermore, in the above-mentioned method for measuring the outer diameter dimension of the annular support of the large-diameter rotary reaction furnace cylinder, the first moving mechanism also includes a first hand wheel, and the first hand wheel is connected to the end of the first screw rod.

[0031] Furthermore, in the above-mentioned method for measuring the outer diameter dimension of the annular support of the large-diameter rotary reactor cylinder, the second moving mechanism also includes a second hand wheel, and the second hand wheel is connected to the end of the second screw rod.

[0032] The beneficial effects of the present invention are as follows: according to the structural characteristics of the large-diameter rotary reaction furnace cylinder body and the annular bracket body, the present invention designs a specific first positioning mechanism and a second positioning mechanism structure, utilizes the first moving mechanism to adjust the positions of the four rollers so that the four rollers are pressed against the end face edge of the annular bracket body to achieve positioning, and the receiving device and the transmitting device connected to the laser ranging sensor are positioned by the telescopic rod, and the position of the first positioning mechanism or the second positioning mechanism is fine-tuned, and the position of the first positioning mechanism or the second positioning mechanism is positioned using the value change measured by the laser ranging sensor so that the receiving device and the transmitting device are exactly located at the diagonal position, and the position of the magnetic block body is adjusted by the second moving mechanism, and the first positioning mechanism and the second positioning mechanism are stably positioned by magnetic attraction to ensure stable and accurate measurement values, and because the position of the magnetic block body is adjustable, it is suitable for the magnetic attraction positioning of the block position of the annular bracket body or the magnetic attraction positioning of the non-block position, and this scheme has higher measurement accuracy than the method of measuring with a tape measure in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a measuring device from a first perspective involved in a method for measuring the outer diameter dimension of a large-diameter rotary reactor drum annular support according to a specific embodiment of the present invention;

[0034] Figure 2 for Figure 1 A magnified view of part A;

[0035] Figure 3It is a structural schematic diagram of a second viewing angle of a measuring device involved in a method for measuring the outer diameter dimension of a large-diameter rotary reactor drum annular support according to a specific embodiment of the present invention;

[0036] Figure 4 for Figure 3 A magnified view of part B;

[0037] Description of labels:

[0038] 1. Rotary reactor cylinder body;

[0039] 2. annular bracket body; 21. stopper;

[0040] 3. First positioning mechanism; 31. First bracket; 32. Second bracket; 33. First moving mechanism; 331. First screw rod; 332. First guide column; 333. First hand wheel; 34. Magnetic block body; 35. Second moving mechanism; 351. Second screw rod; 352. Second guide column; 353. Second hand wheel; 36. First roller; 37. Second roller; 38. Third roller; 39. Fourth roller; 310. Telescopic rod; 3101. Guide rail seat; 3102. Sliding rod; 3103. Locking screw;

[0041] 4. The second positioning mechanism;

[0042] 5. Laser ranging sensor; 51. Transmitting device; 52. Receiving device. DETAILED DESCRIPTION

[0043] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0044] Please refer to Figures 1 to 4 The specific embodiment of the present invention relates to a method for measuring the outer diameter of a large-diameter rotary reactor drum annular support, wherein the large-diameter rotary reactor drum annular support comprises:

[0045] A rotary reaction furnace cylinder body 1, wherein the rotary reaction furnace cylinder body 1 is in the shape of a circular cylinder;

[0046] An annular support body 2, wherein the annular support is coaxially connected to the outside of the middle section of the rotary reactor cylinder body 1 through a plurality of support rods, and a plurality of stoppers 21 are arranged on the outside of the annular support body 2 in a circumferential array;

[0047] The measuring method is based on a measuring device, which includes a first positioning mechanism 3 and a second positioning mechanism 4 of the same structure; and a laser distance sensor 5, which includes a transmitting device 51 and a receiving device 52;

[0048] The first positioning mechanism 3 and the second positioning mechanism 4 have the same structure; the first positioning mechanism 3 includes a first bracket 31, a second bracket 32, a first moving mechanism 33, a magnetic block body 34, a second moving mechanism 35, a first roller 36, a second roller 37, a third roller 38, a fourth roller 39 and a telescopic rod 310;

[0049] The first bracket 31 and the second bracket 32 ​​are connected via a first moving mechanism 33, and the first moving mechanism 33 is used to drive the second bracket 32 ​​to move relative to the first bracket 31 along the X direction;

[0050] The magnetic block body 34 is connected to the first bracket 31 through a second moving mechanism 35, and the second moving mechanism 35 is used to drive the magnetic block body 34 to move along the Y direction;

[0051] The first roller 36 and the second roller 37 are rotatably connected to the first bracket 31 symmetrically, and the axes of the first roller 36 and the second roller 37 are located in the same plane, which is perpendicular to the X direction;

[0052] The third roller 38 and the fourth roller 39 are rotatably connected to the second bracket 32 ​​symmetrically, and the axes of the third roller 38 and the fourth roller 39 are located in the same plane, which is perpendicular to the X direction;

[0053] One end of the telescopic rod 310 is connected to the first bracket 31, and the telescopic rod 310 is parallel to the X direction;

[0054] The emitting device 51 of the laser distance measuring sensor 5 is connected to the telescopic rod 310 of the first positioning mechanism 3, and the emitting direction of the emitting device 51 is perpendicular to the X direction, and the emitting direction of the emitting device 51 is located in the axial symmetric plane of the first roller 36 and the second roller 37;

[0055] The receiving device 52 of the laser distance measuring sensor 5 is connected to the telescopic rod 310 of the second positioning mechanism 4;

[0056] The measuring method comprises the following steps:

[0057] Step 1: Place the first positioning mechanism 3 and the second positioning mechanism 4 at diagonal positions of the annular bracket body 2 respectively;

[0058] Step 2: Adjust the first moving mechanism 33 according to the axial width of the annular bracket body 2, so that the distance between the first roller 36 and the third roller 38 is equal to the axial width of the annular bracket body 2, and the distance between the second roller 37 and the fourth roller 39 is equal to the axial width of the annular bracket body 2, so that the first roller 36, the second roller 37, the third roller 38 and the fourth roller 39 are respectively pressed against the edge of the annular bracket body 2;

[0059] Step 3: Adjust the length of the telescopic rod 310 of the first positioning mechanism 3 and the length of the telescopic rod 310 of the second positioning mechanism 4 so that the receiving device 52 and the transmitting device 51 extend to one end of the rotary reactor cylinder body 1, so that the projection directions of the receiving device 52 and the transmitting device 51 are located in the same plane, which is perpendicular to the X direction;

[0060] Step 4: Slowly move the first positioning mechanism 3 or the second positioning mechanism 4 along the circumference of the annular bracket body 2. When the distance measured by the laser distance sensor 5 is the longest, it means that the first positioning mechanism 3 and the second positioning mechanism 4 are just located at the diagonal position of the annular bracket body 2. At this time, adjust the second moving mechanism 35 so that the magnetic block body 34 is close to and adsorbed on the outer circumference of the annular bracket body 2, and measure the outer diameter of the annular bracket body 2 by the laser distance sensor 5.

[0061] Step 5: Reversely adjust the second moving mechanism 35 to make the magnetic block body 34 separate from the adsorption of the annular bracket body 2; reversely adjust the first moving mechanism 33 to make the first roller 36, the second roller 37, the third roller 38 and the fourth roller 39 separate from the annular bracket body 2.

[0062] In the above implementation mode, it should be noted that, after positioning is completed, the spacing between the transmitting device 51 and the receiving device 52 of the laser ranging sensor 5 can be exactly equal to the outer diameter of the annular bracket body 2, or can have a fixed difference. The measurement value of the laser ranging sensor 5 is the spacing between the transmitting device 51 and the receiving device 52. The actual outer diameter measurement value is obtained by converting the fixed difference between the spacing between the transmitting device 51 and the receiving device 52 and the outer diameter of the annular bracket body.

[0063] In the above embodiment, according to the structural characteristics of the large-diameter rotary reactor barrel body 1 and the annular bracket body 2, a specific structure of the first positioning mechanism 3 and the second positioning mechanism 4 is designed, the positions of the four rollers are adjusted by the first moving mechanism 33, so that the four rollers are pressed against the end surface edge of the annular bracket body 2 to achieve positioning, and the receiving device 52 and the transmitting device 51 connected to the laser ranging sensor 5 are positioned by the telescopic rod 310, and the position of the first positioning mechanism 3 or the second positioning mechanism 4 is fine-tuned, and the position of the first positioning mechanism 3 or the second positioning mechanism 4 is positioned by using the value change measured by the laser ranging sensor 5, so that the receiving device 52 and the transmitting device 51 are exactly located at the diagonal position, and the position of the magnetic block body 34 is adjusted by the second moving mechanism 35, and the first positioning mechanism 3 and the second positioning mechanism 4 are stably positioned by magnetic attraction to ensure the stability and accuracy of the measured value. Since the position of the magnetic block body 34 is adjustable, it is suitable for the magnetic attraction positioning of the stop block 21 position of the annular bracket body 2 or the magnetic attraction positioning of the non-stop block 21 position. Compared with the method of measuring by a tape measure in the prior art, this scheme has higher measurement accuracy.

[0064] As a preferred embodiment, the first moving mechanism 33 includes a first screw rod 331 and a first guide column 332; the axial directions of the first screw rod 331 and the first guide column 332 are both X-direction, one end of the first screw rod 331 is rotatably connected to the first bracket 31, and the second bracket 32 ​​is provided with a first threaded hole threadedly matched with the first screw rod 331; one end of the first guide column 332 is fixedly connected to the first bracket 31, and the second bracket 32 ​​is provided with a first through hole slidingly matched with the first guide column 332.

[0065] As a preferred embodiment, the second moving mechanism 35 includes a second screw rod 351 and a second guide column 352; the axial directions of the second screw rod 351 and the second guide column 352 are both perpendicular to the X direction, one end of the second screw rod 351 is rotatably connected to the magnetic block body 34, and the first bracket 31 is provided with a second threaded hole threadedly matched with the second screw rod 351; one end of the second guide column 352 is fixedly connected to the magnetic block body 34, and the first bracket 31 is provided with a second through hole slidingly matched with the second guide column 352.

[0066] As a preferred embodiment, the telescopic rod 310 includes a guide rail seat 3101, a slide rod 3102 and a locking screw 3103;

[0067] The guide rail seat 3101 is fixedly connected to the first bracket 31, and the guide rail seat 3101 is provided with an X-direction dovetail guide groove, the slide rod 3102 is slidably connected to the dovetail guide groove, and the side of the guide rail seat 3101 is provided with a third threaded hole, and the locking screw 3103 is threadedly connected to the third threaded hole.

[0068] As a preferred embodiment, the first roller 36, the second roller 37, the third roller 38 and the fourth roller 39 have the same structure, the first roller 36 is stepped in shape, and the first roller 36 is pressed against the male corner of the outer end of the annular bracket body 2 through the stepped female corner.

[0069] As a preferred embodiment, the first moving mechanism 33 further includes a first hand wheel 333 , and the first hand wheel 333 is connected to the end of the first screw rod 331 .

[0070] As a preferred embodiment, the second moving mechanism 35 further includes a second hand wheel 353 , and the second hand wheel 353 is connected to the end of the second screw rod 351 .

[0071] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for measuring the outer diameter of a large-diameter rotary reactor drum annular support, wherein the large-diameter rotary reactor drum annular support comprises: The rotary reaction furnace cylinder body is in the shape of a circular cylinder; An annular support body, wherein the annular support is coaxially connected to the outside of the middle section of the rotary reactor cylinder body through a plurality of support rods, and a plurality of stoppers are arranged on the outside of the annular support body in a circumferential array; It is characterized in that the measuring method is based on a measuring device, which includes a first positioning mechanism and a second positioning mechanism of the same structure; and also includes a laser ranging sensor, which includes a transmitting device and a receiving device; The first positioning mechanism and the second positioning mechanism have the same structure; the first positioning mechanism comprises a first bracket, a second bracket, a first moving mechanism, a magnetic block body, a second moving mechanism, a first roller, a second roller, a third roller, a fourth roller and a telescopic rod; The first bracket and the second bracket are connected via a first moving mechanism, and the first moving mechanism is used to drive the second bracket to move relative to the first bracket along the X direction; The magnetic block body is connected to the first bracket through a second moving mechanism, and the second moving mechanism is used to drive the magnetic block body to move along the Y direction; The first roller and the second roller are rotatably connected to the first bracket symmetrically, and the axes of the first roller and the second roller are located in the same plane, and the plane is perpendicular to the X direction; The third roller and the fourth roller are rotatably connected to the second bracket symmetrically, and the axes of the third roller and the fourth roller are located in the same plane, and the plane is perpendicular to the X direction; One end of the telescopic rod is connected to the first bracket, and the telescopic rod is parallel to the X direction; The emitting device of the laser distance measuring sensor is connected to the telescopic rod of the first positioning mechanism, the emitting direction of the emitting device is perpendicular to the X direction, and the emitting direction of the emitting device is located in the axial symmetric plane between the first roller and the second roller; The receiving device of the laser distance measuring sensor is connected to the telescopic rod of the second positioning mechanism; The measuring method comprises the following steps: Step 1: Place the first positioning mechanism and the second positioning mechanism at diagonal positions of the annular bracket body respectively; Step 2: adjusting the first moving mechanism according to the axial width of the annular bracket body, so that the spacing between the first roller and the third roller is equal to the axial width of the annular bracket body, and the spacing between the second roller and the fourth roller is equal to the axial width of the annular bracket body, so that the first roller, the second roller, the third roller and the fourth roller are respectively pressed against the edge of the annular bracket body; Step 3: Adjust the length of the telescopic rod of the first positioning mechanism and the length of the telescopic rod of the second positioning mechanism so that the receiving device and the transmitting device extend outside one end of the rotary reactor body, and the projection directions of the receiving device and the transmitting device are located in the same plane, which is perpendicular to the X direction; Step 4: Slowly move the first positioning mechanism or the second positioning mechanism along the circumference of the annular bracket body. When the distance measured by the laser distance sensor is the longest, it means that the first positioning mechanism and the second positioning mechanism are exactly located at the diagonal positions of the annular bracket body. At this time, adjust the second moving mechanism so that the magnetic block body approaches and is adsorbed on the outer circumference of the annular bracket body, and measure the outer diameter of the annular bracket body by the laser distance sensor. Step 5: Reversely adjust the second moving mechanism to separate the magnetic block body from the annular bracket body; reversely adjust the first moving mechanism to separate the first roller, the second roller, the third roller and the fourth roller from the annular bracket body.

2. The method for measuring the outer diameter of the large diameter rotary reactor drum annular support according to claim 1 is characterized in that: The first moving mechanism includes a first screw rod and a first guide column; the axial directions of the first screw rod and the first guide column are both X-direction, one end of the first screw rod is rotatably connected to the first bracket, and the second bracket is provided with a first threaded hole that cooperates with the first screw rod thread; one end of the first guide column is fixedly connected to the first bracket, and the second bracket is provided with a first through hole that slidably cooperates with the first guide column.

3. The method for measuring the outer diameter of the large-diameter rotary reactor drum annular support according to claim 1 is characterized in that: The second moving mechanism includes a second screw rod and a second guide column; the axial directions of the second screw rod and the second guide column are perpendicular to the X direction, one end of the second screw rod is rotatably connected to the magnetic block body, and the first bracket is provided with a second threaded hole that cooperates with the second screw rod thread; one end of the second guide column is fixedly connected to the magnetic block body, and the first bracket is provided with a second through hole that slidably cooperates with the second guide column.

4. The method for measuring the outer diameter of the large diameter rotary reactor drum annular support according to claim 1, characterized in that: The telescopic rod comprises a guide rail seat, a slide rod and a locking screw; The guide rail seat is fixedly connected to the first bracket, the guide rail seat is provided with an X-direction dovetail guide groove, the slide rod is slidably connected to the dovetail guide groove, a third threaded hole is provided on the side of the guide rail seat, and the locking screw is threadedly connected to the third threaded hole.

5. The method for measuring the outer diameter of the large-diameter rotary reactor drum annular support according to claim 1, characterized in that: The first roller, the second roller, the third roller and the fourth roller have the same structure. The first roller is stepped in shape. The first roller is pressed against the male corner of the outer end of the annular bracket body through the stepped female corner.

6. The method for measuring the outer diameter of the large-diameter rotary reactor drum annular support according to claim 2, characterized in that: The first moving mechanism also includes a first hand wheel, and the first hand wheel is connected to the end of the first screw rod.

7. The method for measuring the outer diameter of the large-diameter rotary reactor drum annular support according to claim 2, characterized in that: The second moving mechanism also includes a second hand wheel, and the second hand wheel is connected to the end of the second screw rod.

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