Large split type nut mounting device and horizontal mounting method

Abstract

The invention relates to a large split type nut installation device and a horizontal installation method. A fixing block is fixed to a guide rail, a vertical jack is arranged on the fixing block, a base is fixed to the fixing block so that the base and the guide rail can form rigid connection, and the height of the base in the vertical direction can be adjusted through a long bolt and the vertical jack; the check block is fixed to the first sliding block, the first sliding block is arranged in a guide groove of the base and moves on the base in the transverse direction, the second sliding block and the first sliding block are connected together, the second sliding block is adjusted to different positions on the first sliding block in the transverse direction, and the hydraulic supporting seat is fixed to the base and adjusted to different positions on the base in the transverse direction. The horizontal jack is located between the first sliding block and the hydraulic supporting seat, the adjusting bolt is installed in a threaded hole of the second sliding block to finely adjust the installation angle of the left half nut, and the adjusting screw rod is screwed in a threaded hole of the adjusting flange to support and adjust the height of the base. By means of the device, the large split type nut can be installed on the pipe body rapidly, safely and reliably.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical manufacturing, and relates to a large-scale split-flap nut installation device and a horizontal installation method with a weight exceeding 4 tons, a diameter exceeding 1 meter, and a length of 0.7-1.2 meters. Background Art

[0002] Large split nuts are generally used in the connection of segmented ultra-high pressure vessels, wind tunnels and their high pressure and ultra-high pipes. They are characterized by heavy weight and large volume, and cannot be assembled using existing standard tools or equipment.

[0003] The segmented ultra-high pressure vessel is a new type of pressure vessel in recent years. With the development of science and technology, the pressure vessel has gradually developed from the original single-body type to the multi-segment type, which is used to meet scientific experiments and provide necessary data for certain experiments, which greatly shortens the product development cycle, or as a reactor, greatly improves the production efficiency of the product. Wind tunnel test equipment is a pipeline-shaped device that uses artificial methods to generate and control airflow to simulate the flow of gas around aircraft or entities, and can measure the effect of airflow on entities and observe physical phenomena. It is the best way to design and manufacture aerospace products by collecting and analyzing real-time data on scaled models to discover design defects and improve them. Large wind tunnels are basic equipment for the development of large aerospace products. In these large equipment and facilities, the connection of multi-segment pipes has become an unavoidable problem. How to efficiently connect the pipes and ensure that the connection of the pipes is safe and reliable is the top priority. There are two ways to connect pipes, one is flange connection and the other is large nut connection, and both have their advantages and disadvantages.

[0004] Large split nut means that the nut is split into two pieces along the axial direction of the nut, and then the nut is assembled along the diameter direction of the nut by bolts at the outer circle of the thread. The advantage of this is that the nut can be directly buckled on the pipe body after adjusting the installation position of the nut, and then the two pieces of nuts are connected by bolts, and the thread installation can be completed by rotating a small angle. Since the starting angle of the thread of the nut and the pipe body is random, the angle of the two pieces of nuts along the circumference of the nut is also random during the installation process.

[0005] In order to solve the above problems that occur during the installation of large split nuts, it is necessary to study a device that can install nuts at a certain angle and a horizontal installation method. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a device that can meet the installation requirements of nuts within the inclination angle range of 7°-65°, and a large-scale split-flap nut installation device and a horizontal installation method that can perform installation efficiently, safely and reliably.

[0007] The object of the present invention is achieved in that: A large split-flap nut installation device comprises a guide rail as the basis of the entire device, four fixing blocks clamped on the guide rail by bolts, and a base installed on the fixing blocks; The base is placed on four vertical jacks for lifting and lowering the base and adjusting and determining the vertical height of the base, and the base is also mounted on a fixed block by long bolts passing through light holes on the base; A guide groove is provided in the middle of the base, and a first sliding block moving in the horizontal direction is installed on the guide groove of the base; a mounting hole is provided on the right part of the base, and a mounting hole is also provided on the first sliding block, and a bolt is installed between the mounting hole of the first sliding block and the guide groove of the base to ensure that the first sliding block moves horizontally in the guide groove of the base; A stopper is fixedly installed at one end of the first sliding block by bolts, and the two are rigidly connected. After the first sliding block is installed in the guide groove, the stopper and the first sliding block become one and slide in the guide groove; a second sliding block is installed at the other end of the first sliding block by bolts, and the second sliding block is installed in the mounting hole of the first sliding block by bolts, so as to ensure that the second sliding block is fixed at different positions on the first sliding block in the horizontal direction, and ensure that the second sliding block is adjusted to different positions in the horizontal direction; The hydraulic support seat is fixed in the mounting hole on the base by bolts and fixed at different positions in the horizontal direction as the fulcrum of the horizontal jack. The horizontal jack is located between the second sliding block and the hydraulic support seat to provide horizontal movement power for the first sliding block. A right half nut is arranged between the first sliding block and the second sliding block. The right half nut contacts two points between the first sliding block and the second sliding block. A threaded hole is opened on the second sliding block. The adjusting bolt is installed in the threaded hole of the second sliding block. The installation angle of the right half nut is fine-tuned by adjusting the bolt. An adjusting flange with threaded holes is arranged under the base, and an adjusting screw rod for supporting and adjusting the height of the base is installed in the threaded holes of the adjusting flange.

[0008] Furthermore, the fixed block has an L-shaped structure, specifically, a semi-concave plane on one side of the fixed block, and the vertical jack is located on the semi-concave plane; a groove is provided at the bottom of the fixed block, and threaded holes are provided on both sides of the groove, and the fixed block is clamped on the guide rail by tightening the bolts in the threaded holes; two threaded holes are provided at the upper part, and two long bolts are connected to the threaded holes through the light holes on the base to fix the base on the fixed block; the jack is hoisted on the semi-concave plane of the fixed block by a special hoist or a crane, and the jack is located relative to the fixed block In the free state, the fixed block is equivalent to the foundation, the bottom of the jack is placed on the semi-concave plane of the fixed block, and its top is supported on the bottom surface of the base; in the initial state, there is no rigid fixation between the base, the fixed block and the jack. The fixed block is used to improve the stability of the system and increase the covering force between the base and the foundation. After adjusting the height of the base by the jack, tighten the eight long bolts passing through the light holes on the base to rigidly connect the base, four vertical jacks and the base, that is, the base is installed and fixed on the fixed block, thereby stabilizing the system.

[0009] Furthermore, the guide groove is two steel plates welded on the upper end surface of the base with a certain distance therebetween, perpendicular to the base and parallel to each other. The bottom of the guide groove is actually the upper end surface of the base. The upper part, front and rear of the guide groove are all open structures. The first slider is installed into the guide groove from the upper part of the guide groove through a lifting mechanism, or is pushed into the guide groove from the front or rear direction of the guide groove.

[0010] A method for installing a large split-petal nut is to install the split-petal nut according to the following steps: Step 1) Install the fixing blocks: Fix the four fixing blocks on the left, right, front and back to the guide rails with bolts; there are four fixing blocks in total, two on each side, and the bolts are tightened horizontally to fix the fixing blocks to the guide rails; Step 2) Install the vertical jack: Place the vertical jack on the fixed block and adjust it to a suitable position. There are four jacks, two on each side. Step 3) Install the base: Install the base on the jack, pass the long bolt through the light hole of the base, screw it on the fixing block, screw the long bolt, and fix the base on the hydraulic jack; when installing the nut, adjust the center height of the base by adjusting the hydraulic jack and screwing the long bolt, and the adjustment distance is 150mm; Step 4) Install the adjustment studs: Install the adjustment studs on the adjustment flange of the base. There are two adjustment bolts, one on the left and one on the right. The adjustment studs have two functions: one is to provide support, and the other is to cooperate with the hydraulic cylinder to adjust the center height of the base; Step 5), install the baffle: use bolts to install the baffle on the first slider; the baffle is used to block the bottom of the nut when adjusting the angle of the half nut to complete the angle adjustment of the half nut; Step 6) Install the first slider: Place the first slider in the guide groove of the base; the function of the first slider is to adjust the horizontal movement of the half nut, and the adjustment distance is 200mm; Step 7) Install the second sliding block: place the second sliding block on the first sliding block and fix it on the first sliding block with bolts; the second sliding block cooperates with the first sliding block to adjust the angle of the half nut; the adjustment distance of the second sliding block is 400mm, the adjustment method is nonlinear, and the adjustment distance is 50mm each time. When the angle requires linear adjustment, the adjustment bolt on the second sliding block can be used to achieve it; Step 8) Install the hydraulic support seat: place the hydraulic support seat on the base and fix it on the base with bolts; the hydraulic support seat provides a support point to adjust the horizontal movement of the first sliding block through the horizontal jack; Step 9), install the right half nut: hang the right half nut into the space enclosed by the first sliding block and the second sliding block, adjust the center height of the base to a suitable position, adjust the second sliding block preliminarily, and then adjust the adjustment bolt on the second sliding block to adjust the right half nut to a suitable angle, so that the right half nut is buckled on the thread of the pipe body and close to the pipe body; Step 10) Install the left half nut: Hang the left half nut onto the thread of the pipe body, buckle it onto the pipe body, align the left and right halves of the nut, connect them together with bolts, and tighten the nut; Step 11) Adjust the hydraulic jack: adjust the hydraulic jack, lower the height of the base, and remove the installation device.

[0011] The present invention has the following positive effects: the present invention firstly installs two sections of the pipe body on the bracket, sets up the pipe body, aligns the center of the pipe body, separates the two sections of the pipe body by a distance of 0.7-1.2 meters, and then places the split nut device on the guide rail below the pipe body, the device is located at the center of the distance between the end faces of the two sections of the pipe body, and after adjusting the distance between the upper end face of the first slider and the center of the pipe body according to the size of the half nut diameter, the right half nut is placed on the first slider of the device, and the hydraulic jack is started to slowly approach the right half nut to the pipe body thread, observe the alignment of the tooth profile, adjust the pipe body to move axially so that the thread tooth profile is aligned with the pipe body tooth profile, and then fine-tune the angle of the right half nut by adjusting the bolt, and after the right half nut is buckled on the pipe body thread, the left half nut is hoisted onto the pipe thread, and after buckling and tightening, the two halves are bolted together by the stud to form a complete nut, thereby completing the installation of the split nut. The device can quickly, safely and reliably install large split nuts on the pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the assembly front view of the device of the present invention. (The overall dimensions are 3225x2015x480 in length x height x width).

[0013] Figure 2 It is the left side view of the assembly of the device of the present invention.

[0014] Figure 3 It is a front view of the fixing block 2 of the present invention.

[0015] Figure 4 It is a left side view of the fixing block 2 of the present invention.

[0016] Figure 5 It is a front view of the base 11 of the present invention.

[0017] Figure 6 It is a top view of the base 11 of the present invention.

[0018] Figure 7 It is a front view of the stopper 7 of the present invention.

[0019] Figure 8 It is a left side view of the stopper 7 of the present invention.

[0020] Fig. 9 It is a front view of the first sliding block 8 of the present invention.

[0021] Fig.10 It is a top view of the first sliding block 8 of the present invention.

[0022] Fig.11 It is a front view of the second sliding block 9 of the present invention.

[0023] Fig.12 It is a left view of the second sliding block 9 of the present invention.

[0024] Fig.13 It is a front view of the hydraulic support seat 13 of the present invention.

[0025] Fig.14 It is a left view of the hydraulic support seat 13 of the present invention.

[0026] Fig.15 The front view of the adjusting screw 15 of the present invention. The names of the serial numbers in the figure are as follows: 1-guide rail, 2-fixed block, 3-long bolt, 4-vertical jack, 5-left half nut, 6-tube body, 7-stopper, 8-first sliding block, 9-second sliding block, 10-adjusting bolt, 11-base, 12-horizontal jack, 13-hydraulic support seat, 14-adjusting flange, 15-adjusting screw, 16-right half nut, 17-guide groove. DETAILED DESCRIPTION

[0027] Embodiment 1: As shown in the figure, a large split-flap nut installation device includes a guide rail 1 as the basis of the entire device, four fixing blocks 2 clamped on the guide rail 1 by bolts, and a base 11 installed on the fixing blocks 2; The base 11 is placed on four vertical jacks 4 for lifting and lowering the base 11 and adjusting and determining the vertical height of the base 11, and the base 11 is also mounted on the fixing block 2 by passing long bolts 3 through the light holes on the base 11; A guide groove 17 is provided in the middle of the base 11, and a first sliding block 8 moving in the horizontal direction is installed on the guide groove 17 of the base 11; a mounting hole is provided in the right part of the base 11, and a mounting hole is also provided on the first sliding block 8, and a bolt is installed between the mounting hole of the first sliding block 8 and the guide groove 17 of the base 11 to ensure that the first sliding block 8 moves horizontally in the guide groove of the base 11; A stopper 7 is fixedly installed at one end of the first sliding block 8 by bolts, and the two are rigidly connected. After the first sliding block 8 is installed in the guide groove, the stopper 7 and the first sliding block 8 become one body and slide in the guide groove; a second sliding block 9 is installed at the other end of the first sliding block 8 by bolts, and the second sliding block 9 is installed in the mounting hole of the first sliding block 8 by bolts, so that the second sliding block 9 is fixed at different positions on the first sliding block 8 in the horizontal direction, and the second sliding block 9 is adjusted to different positions in the horizontal direction; The hydraulic support seat 13 is fixed in the mounting hole on the base 11 by bolts and fixed at different positions in the horizontal direction as the fulcrum of the horizontal jack 12. The horizontal jack 12 is located between the second sliding block 9 and the hydraulic support seat 13 to provide horizontal movement power for the first sliding block 8. A right half nut 16 is arranged between the first sliding block 8 and the second sliding block 9. The right half nut 16 contacts with two points between the first sliding block 8 and the second sliding block 9. A threaded hole is opened on the second sliding block 9. The adjusting bolt 10 is installed in the threaded hole of the second sliding block 9. The installation angle of the right half nut 16 is finely adjusted by adjusting the bolt 10. An adjusting flange 14 with threaded holes is arranged below the base 11 , and an adjusting screw 15 for supporting and adjusting the height of the base 11 is installed in the threaded holes of the adjusting flange 14 .

[0028] The fixed block 2 has an L-shaped structure, specifically, a semi-concave plane on one side of the fixed block 2, and the vertical jack 4 is located on the semi-concave plane; a groove is provided at the bottom of the fixed block 2, and threaded holes are provided on both sides of the groove, and the fixed block 2 is clamped on the guide rail 1 by tightening the bolts in the threaded holes; two threaded holes are provided at the upper part of the fixed block 2, and two long bolts 3 are connected to the threaded holes through the light holes on the base 11 to fix the base 11 on the fixed block 2; the jack 4 is hoisted on the semi-concave plane of the fixed block 2 by a special hoist or a crane, and the jack 4 is in a free state relative to the fixed block 2, and the fixed block 2 is fixed. The fixed block 2 is equivalent to the foundation, the bottom of the jack 4 is placed on the semi-concave plane of the fixed block 2, and the top is supported on the bottom surface of the base 11; in the initial state, there is no rigid fixation between the base 11, the fixed block 2, and the jack 4. The fixed block 2 is used to improve the stability of the system and increase the covering force between the base and the foundation. After adjusting the height of the base 11 by the jack 4, tighten the eight long bolts 3 passing through the light holes on the base 11, so that the base 11, the four vertical jacks 4 and the base 11 are rigidly connected together, that is, the base 11 is installed and fixed on the fixed block 2, thereby playing a role in stabilizing the system.

[0029] The guide groove 17 is composed of two steel plates welded to the upper end surface of the base 11 with a certain distance, perpendicular to the base 11 and parallel to each other. The bottom of the guide groove is actually the upper end surface of the base. The upper part, front and rear of the guide groove are all open structures. The first slider 8 is installed into the guide groove from the upper part of the guide groove through a lifting mechanism, or pushed into the guide groove from the front and rear directions of the guide groove.

[0030] Figure 1 This is a detailed diagram of the principle of the present invention. The large-scale split-flap nut installation device includes four fixed blocks 2, which are clamped on the guide rail 1 and serve as the basis of the entire device. A base 11 is placed on four vertical jacks 4. Eight long bolts 3 pass through the light holes on the base 11 to fix the base 11 on the fixed block 2. The stopper 7 is fixed to the first slider 8 by bolts. The first slider 8 is placed in the guide groove of the base 11 and can move in the horizontal direction. The second sliding block 9 is placed on the first slider 8 and fixed by bolts. It can be fixed at different positions on the first slider 8 in the horizontal direction. The hydraulic support seat 13 is fixed to the base 11 by bolts and can be fixed at different positions in the horizontal direction. It serves as the fulcrum of the horizontal jack 12. The horizontal jack 12 is located between the second sliding block 9 and the hydraulic support seat 13 to provide power for the horizontal movement of the first slider 8. During installation, the left half nut is located on the first slider 8 and the second slider 9, and contacts the two points therebetween. The adjusting bolt 10 is installed in the threaded hole of the second slider 9, and the installation angle of the left half nut 16 can be fine-tuned. The adjusting screw 15 is screwed into the threaded hole of the adjusting flange 14, and its function is to support and adjust the height of the base 11.

[0031] The split-flap nut with an outer diameter of φ1.2 meters weighs 4.6 tons, and the weight of half a flap is about 2.3 tons. A total of 5 jacks are used, including 4 jacks for vertical movement and 1 jack for horizontal movement. The minimum height of the vertical jack is 148 mm, the maximum is 285 mm, the adjustable range is 137 mm, the lifting tonnage is 2 tons, and the overall dimensions are 90x85x168 mm. The minimum height of the horizontal jack is 325 mm, the maximum is 505 mm, the adjustable range is 200 mm, the lifting tonnage is 20 tons, and the overall dimensions are φ128x325 mm. The installation center is 1.5 meters high.

[0032] The horizontal large-scale split-flap nut installation device includes a fixed block clamped on the guide rail; the base center height can be adjusted to an adjustable distance of 150mm; a long bolt connected to the base, the long bolt can adjust the base center height and fix the base; a base that bears the weight of the entire device, and a guide groove is designed on the base; a baffle is placed at the front end of the sliding block, the function of which is to block the lower edge of the half nut so as to adjust the angle of the nut; a first sliding block placed on the base guide groove is used to adjust the horizontal distance of the half nut, the adjustment distance is 200mm; a second sliding block placed on the first sliding block is used to adjust the angle and horizontal distance of the half nut, the angle can be adjusted by 7°-35°, and the horizontal distance can be adjusted by 200mm; a hydraulic support seat placed on the base, which is mainly used to provide a reaction force for the hydraulic jack to promote the horizontal movement of the first sliding block, and the jack is extended and retracted 50mm each time; an adjusting screw placed under the hydraulic jack, which mainly plays a supporting role to provide a guarantee for the stability of the entire system.

[0033] The implementation process of the present invention is specifically carried out according to the following steps: Step 1) Install the fixing blocks: Fix the four fixing blocks on the left, right, front and back to the guide rails with bolts; there are four fixing blocks in total, two on each side, and the bolts are tightened horizontally to fix the fixing blocks to the guide rails; Step 2) Install the vertical jack: Place the vertical jack on the fixed block and adjust it to a suitable position. There are four jacks, two on each side. Step 3) Install the base: Install the base on the jack, pass the long bolt through the light hole of the base, screw it on the fixing block, screw the long bolt, and fix the base on the hydraulic jack; when installing the nut, adjust the center height of the base by adjusting the hydraulic jack and screwing the long bolt, and the adjustment distance is 150mm; Step 4) Install the adjustment studs: Install the adjustment studs on the adjustment flange of the base. There are two adjustment bolts, one on the left and one on the right. The adjustment studs have two functions: one is to provide support, and the other is to cooperate with the hydraulic cylinder to adjust the center height of the base; Step 5), install the baffle: use bolts to install the baffle on the first slider; the baffle is used to block the bottom of the nut when adjusting the angle of the half nut to complete the angle adjustment of the half nut; Step 6) Install the first slider: Place the first slider in the guide groove of the base; the function of the first slider is to adjust the horizontal movement of the half nut, and the adjustment distance is 200mm; Step 7) Install the second sliding block: place the second sliding block on the first sliding block and fix it on the first sliding block with bolts; the second sliding block cooperates with the first sliding block to adjust the angle of the half nut; the adjustment distance of the second sliding block is 400mm, the adjustment method is nonlinear, and the adjustment distance is 50mm each time. When the angle requires linear adjustment, the adjustment bolt on the second sliding block can be used to achieve it; Step 8) Install the hydraulic support seat: place the hydraulic support seat on the base and fix it on the base with bolts; the hydraulic support seat provides a support point to adjust the horizontal movement of the first sliding block through the horizontal jack; Step 9), install the right half nut: hang the right half nut into the space enclosed by the first sliding block and the second sliding block, adjust the center height of the base to a suitable position, adjust the second sliding block preliminarily, and then adjust the adjustment bolt on the second sliding block to adjust the right half nut to a suitable angle, so that the right half nut is buckled on the thread of the pipe body and close to the pipe body; Step 10) Install the left half nut: Hang the left half nut onto the thread of the pipe body, buckle it onto the pipe body, align the left and right halves of the nut, connect them together with bolts, and tighten the nut; Step 11) Adjust the hydraulic jack: adjust the hydraulic jack, lower the height of the base, and remove the installation device.

[0034] 1. Install the mounting device on the guide rail according to steps 1) to 8); 2. Hang the right half nut 16 onto the first slide block 8 of the mounting device, and adjust the angle between the right half nut 6 and the vertical plane to 27°; 3. Adjust the vertical jack 4 so that the center height of the nut 16 reaches 1.2 meters. During coarse adjustment, the center height of the nut 16 should be lower than the center height of the pipe body 6.

[0035] 4. Start the horizontal jack 12 to make the right half nut 16 slowly approach the pipe body 6. During this process, the vertical jack 4 must be adjusted so that the right half nut 16 is buckled on the thread of the pipe body 6 at an angle of 27°.

[0036] 5. Hang the left half nut 5 to the other end of the pipe body 1, buckle it on the thread of the pipe body 6, and use bolts to connect the left and right nuts together to complete the installation of the nut.

[0037] 6. Adjust the vertical jack 4 and the horizontal jack 12 to keep the first slide block 8 and the second sliding block 9 away from the nut, remove the adjusting screw 15, and remove the installation device.

[0038] The function of the four vertical jacks is to adjust the vertical height of the base. The main function of the fixed block is to improve the stability of the system and increase the covering force between the base and the foundation. After the height of the base is adjusted, the base, four vertical jacks and the base are rigidly connected together by tightening eight long bolts, thereby stabilizing the system.

[0039] The guide groove is two steel plates welded to the upper end surface of the base with a certain distance, perpendicular to the base and parallel to each other. The bottom of the guide groove is actually the upper end surface of the base. The upper part, front and rear of the guide groove are all open structures. The first slider can be installed into the guide groove from the upper part of the guide groove through a lifting mechanism, and can also be pushed into the guide groove from the front and rear directions of the guide groove. The stopper installed at one end of the first sliding block is fixed to the first slider by bolts, and the two can be regarded as a rigid connection. After the first slider is installed in the guide groove, the stopper and the first slider can be regarded as one body and can slide in the guide groove.

[0040] The hydraulic support seat is fixed to the mounting hole on the base by bolts and is fixed at different positions in the horizontal direction as the fulcrum of the horizontal jack. The horizontal jack is located between the second sliding block and the hydraulic support seat to provide horizontal movement power for the first sliding block; a right half nut is arranged between the first sliding block and the second sliding block, and the right half nut is in two-point contact with the two. A threaded hole is opened on the second sliding block, and the adjusting bolt is installed in the threaded hole of the second sliding block. The installation angle of the right half nut is fine-tuned by adjusting the bolt; an adjusting flange with a threaded hole is arranged under the base, and an adjusting screw for supporting and adjusting the height of the base is installed in the threaded hole of the adjusting flange; in addition to the long bolts connecting the fixed block and the base, a vertical jack is also arranged between the fixed block and the base. The vertical jack is located on the step of the fixed block, and the height of the base in the vertical direction is ensured by adjusting the length of the long bolts and the height of the vertical jack.

[0041] After the device is fixed on the guide rail 1, the right half nut 16 is hung on the first sliding block 8 of the device, and the angle between the right half nut 16 and the vertical plane is adjusted to a certain angle, which can only be adjusted from 7° to 65°; Adjust the vertical jack 4 so that the center height of the right half nut 16 reaches a suitable height. During the coarse adjustment, the center height of the right half nut 16 should be lower than the center height of the tube body 6; Start the horizontal jack 12 to make the right half nut 16 slowly approach the pipe body 6. During this process, the vertical jack 4 needs to be adjusted so that the right half nut 16 is buckled on the thread of the pipe body 6 at a suitable angle. Hang the left half nut 5 to the other side of the tube body 6, buckle it on the thread of the tube body 6, and use bolts to connect the left half nut 5 and the right half nut 16 together to complete the installation of the nut; The vertical jack 4 and the horizontal jack 12 are adjusted to keep the first sliding block 8 and the second sliding block 9 away from the nut, and the adjusting screw 15 is removed to dismantle the installation device.

Claims

1. A large split-flap nut mounting device, comprising a guide rail (1) as the basis of the entire device, four fixing blocks (2) clamped on the guide rail (1) by bolts, and a base (11) mounted on the fixing blocks (2), characterized in that: The base (11) is placed on four vertical jacks (4) for lifting and lowering the base (11) and adjusting and determining the vertical height of the base (11), and the base (11) is also mounted on the fixed block (2) by means of long bolts (3) passing through light holes on the base (11); A guide groove is provided in the middle of the base (11), and a first sliding block (8) is installed on the guide groove of the base (11) to move in the horizontal direction; a mounting hole is provided on the right part of the base (11), and a mounting hole is also provided on the first sliding block (8), and a bolt is installed between the mounting hole of the first sliding block (8) and the guide groove of the base (11) to ensure that the first sliding block (8) moves in the horizontal direction in the guide groove of the base (11); A stopper (7) is fixedly mounted on one end of the first sliding block (8) by means of bolts, and the two are rigidly connected. After the first sliding block (8) is installed in the guide groove, the stopper (7) and the first sliding block (8) become one body and slide in the guide groove; a second sliding block (9) is fixedly mounted on the other end of the first sliding block (8) by means of bolts, and the second sliding block (9) is installed in the mounting hole of the first sliding block (8) by means of bolts, so that the second sliding block (9) is fixed at different positions on the first sliding block (8) in the horizontal direction, and the second sliding block (9) is adjusted to different positions in the horizontal direction; The hydraulic support seat (13) is fixed in the mounting hole on the base (11) by bolts and fixed at different positions in the horizontal direction to serve as the fulcrum of the horizontal jack (12). The horizontal jack (12) is located between the second sliding block (9) and the hydraulic support seat (13) to provide horizontal movement power for the first sliding block (8). A right half nut (16) is arranged between the first sliding block (8) and the second sliding block (9). The right half nut (16) contacts the two at two points. A threaded hole is opened on the second sliding block (9). The adjusting bolt (10) is installed in the threaded hole of the second sliding block (9). The installation angle of the right half nut (16) is finely adjusted by adjusting the bolt (10). An adjusting flange (14) with a threaded hole is arranged below the base (11), and an adjusting screw (15) for supporting and adjusting the height of the base (11) is installed in the threaded hole of the adjusting flange (14).

2. A large split-flap nut installation device according to claim 1, characterized in that: The fixed block (2) has an L-shaped structure, specifically, a semi-concave plane on one side of the fixed block (2), and the vertical jack (4) is located on the semi-concave plane; a groove is provided at the bottom of the fixed block, and threaded holes are provided on both sides of the groove, and the fixed block (2) is clamped on the guide rail (1) by tightening the bolts in the threaded holes; two threaded holes are provided at the top of the fixed block, and two long bolts (3) pass through the light holes on the base (11) and are connected to the threaded holes, so as to fix the base (11) on the fixed block (2); the jack (4) is hoisted on the semi-concave plane of the fixed block (2) by a special hoist or a crane, and the jack (4) is in a free state relative to the fixed block (2). The bottom of the jack (4) is placed on the semi-concave plane of the fixing block (2), and the top thereof is supported on the bottom surface of the base (11); in the initial state, there is no rigid fixation between the base (11), the fixing block (2) and the jack (4); the fixing block (2) is used to improve the stability of the system and increase the covering force between the base and the base; after the height of the base (11) is adjusted by the jack (4), eight long bolts (3) passing through the light holes on the base (11) are tightened, so that the base (11), the four vertical jacks (4) and the base (11) are rigidly connected together, that is, the base (11) is installed and fixed on the fixing block (2), thereby playing a role in stabilizing the system.

3. A large split-flap nut installation device according to claim 1, characterized in that: The guide groove is two steel plates welded to the upper end surface of the base (11) at a certain distance and perpendicular to the base (11) and parallel to each other. The bottom of the guide groove is actually the upper end surface of the base. The upper part, front and rear of the guide groove are all open structures. The first sliding block (8) is installed into the guide groove from the upper part of the guide groove through a lifting mechanism, or is pushed into the guide groove from the front or rear direction of the guide groove.

4. A method for horizontally installing a large split-petal nut according to claim 1, characterized in that: The specific steps are as follows: Step 1) Install the fixing blocks: Fix the four fixing blocks on the left, right, front and back to the guide rails with bolts; there are four fixing blocks in total, two on each side, and the bolts are tightened horizontally to fix the fixing blocks to the guide rails; Step 2) Install the vertical jack: Place the vertical jack on the fixed block and adjust it to a suitable position. There are four jacks, two on each side. Step 3) Install the base: Install the base on the jack, pass the long bolt through the light hole of the base, screw it on the fixing block, screw the long bolt, and fix the base on the hydraulic jack; when installing the nut, adjust the center height of the base by adjusting the hydraulic jack and screwing the long bolt, and the adjustment distance is 150mm; Step 4) Install the adjustment studs: Install the adjustment studs on the adjustment flange of the base. There are two adjustment bolts, one on the left and one on the right. The adjustment studs have two functions: one is to provide support, and the other is to cooperate with the hydraulic cylinder to adjust the center height of the base; Step 5), install the baffle: use bolts to install the baffle on the first slider; the baffle is used to block the bottom of the nut when adjusting the angle of the half nut to complete the angle adjustment of the half nut; Step 6) Install the first slider: Place the first slider in the guide groove of the base; the function of the first slider is to adjust the horizontal movement of the half nut, and the adjustment distance is 200mm; Step 7) Install the second sliding block: place the second sliding block on the first sliding block and fix it on the first sliding block with bolts; the second sliding block cooperates with the first sliding block to adjust the angle of the half nut; the adjustment distance of the second sliding block is 400mm, the adjustment method is nonlinear, and the adjustment distance is 50mm each time. When the angle requires linear adjustment, the adjustment bolt on the second sliding block can be used to achieve it; Step 8) Install the hydraulic support seat: place the hydraulic support seat on the base and fix it on the base with bolts; the hydraulic support seat provides a support point to adjust the horizontal movement of the first sliding block through the horizontal jack; Step 9), install the right half nut: hang the right half nut into the space enclosed by the first sliding block and the second sliding block, adjust the center height of the base to a suitable position, adjust the second sliding block preliminarily, and then adjust the adjustment bolt on the second sliding block to adjust the right half nut to a suitable angle, so that the right half nut is buckled on the thread of the pipe body and close to the pipe body; Step 10) Install the left half nut: Hang the left half nut onto the thread of the pipe body, buckle it onto the pipe body, align the left and right halves of the nut, connect them together with bolts, and tighten the nut; Step 11) Adjust the hydraulic jack: adjust the hydraulic jack, lower the height of the base, and remove the installation device.

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