Novel mounting jig frame of gate main beam

Abstract

The invention relates to the technical field of valve welding supporting jig frames, and discloses a novel gate main beam mounting jig frame which comprises a jig frame body, a pushing mechanism is arranged at the top of the jig frame body, two progressive mechanisms are arranged at the top of the jig frame body, the pushing mechanism and the progressive mechanisms are located on the same side, an auxiliary pushing mechanism is arranged at the top of the jig frame body, and the two progressive mechanisms are located on the same side. A web and a flange are placed on the top of the jig frame and located on the middle side of the top of the jig frame, the propelling mechanism comprises a first hydraulic cylinder, one end of the first hydraulic cylinder is installed on a top pile leg of the jig frame, and the other end of the first hydraulic cylinder is fixedly connected with an installation block. Through the synergistic effect of all the mechanisms, the convenience and efficiency of installation of the gate main beam are greatly improved, traditional tedious operation of lifting components is not needed, stable movement and accurate butt joint of the components can be achieved through the propelling mechanism, the progressive mechanism and the auxiliary pushing mechanism, the trouble of manual adjustment is reduced, the operation process is simplified, and time and labor cost are saved.

Description

Technical Field

[0001] This invention relates to the field of valve welding support jig technology, and in particular to a novel installation jig for gate main beams. Background Technology

[0002] In the construction of large-scale infrastructure projects such as water conservancy projects and shipping hubs, gates, as key components for controlling water flow, have their overall structural strength and operational stability directly affected by the installation quality of their main beams. Gate main beams are typically welded from a web and flanges, and their installation accuracy and efficiency are crucial to the overall construction progress and project quality. With the continuous expansion of project scale, higher requirements are placed on the structural strength and installation technology of gate main beams, and traditional installation methods are gradually becoming insufficient to meet the demands of efficient and safe construction in modern engineering projects.

[0003] In existing technologies, the installation of the gate main beam typically involves welding the web and flanges in a vertical plane. This process requires a tall jig for support. Lifting equipment is used to hoist the heavy web and flanges and adjust them to a vertical position. Workers then perform alignment and welding around the jig. Its structural principle relies primarily on the lifting capacity of the lifting equipment and the manual adjustments by the workers. The height of the jig provides operating space for vertical welding, and rope fixing or temporary supports ensure the components remain relatively stable during the welding process.

[0004] However, this traditional installation method has significant drawbacks. Firstly, the high height of the jig forces workers to climb, making operation extremely inconvenient. This not only increases physical exertion but also reduces welding accuracy and work efficiency, resulting in a limited number of main beams that can be assembled daily, severely hindering project progress. Secondly, due to the large weight of components such as the web and flanges, precise control during lifting is difficult, leading to swaying or positional shifts. Slight carelessness can cause components to fall, directly causing safety accidents. Furthermore, frequent lifting operations increase equipment wear and construction costs. Therefore, this invention provides a novel installation jig for gate main beams to address the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to provide a novel mounting frame for the main beam of a gate, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a novel mounting jig for a gate main beam, comprising a jig, a pushing mechanism at the top of the jig, two advancing mechanisms at the top of the jig, the pushing mechanism and the advancing mechanism being located on the same side, an auxiliary pushing mechanism at the top of the jig, and a web and flange placed at the top of the jig, the web and flange being located at the middle of the top of the jig. The cooperation of each mechanism can achieve precise docking and stable installation of the web and flange, providing reliable support for subsequent welding operations; The workflow of this new gate main beam installation jig revolves around the precise alignment of the web and flange, with various mechanisms working together to achieve efficient and stable installation. Initial component positioning is performed by placing the web and flange on top of the jig, with the bottom surface of the web contacting multiple ball bearings. The rolling characteristics of the ball bearings reduce subsequent movement resistance. The flange is then engaged in the slots of two movable blocks. The limiting effect of these slots ensures the stability of the flange's initial position, laying the foundation for subsequent movement. Next, the advancing mechanism and the auxiliary pushing mechanism are activated to achieve synchronous approach of the components. In the advancing mechanism, hydraulic cylinder two applies a thrust to the movable block, and the support wheels on both sides of the movable block roll on the top of the base, converting sliding friction into rolling friction, significantly reducing the resistance to flange movement and making it easier to move. At the same time, toothed plate one at the bottom of the movable block and toothed plate two on the base, supported by spring telescopic rods, continuously shift and re-engage, ensuring that the flange advances stably in fixed units through the meshing of the teeth, avoiding movement deviation. In the auxiliary pushing mechanism, the motor drives the bidirectional lead screw to rotate. Under the guidance and limitation of the guide rod and the slider, the two threaded blocks move smoothly towards or away from each other. The threaded blocks drive roller two to roll on the outside of the web. Spring telescopic rod two automatically extends and retracts according to the curvature of the web, always keeping the roller in contact with the web. Together with the bottom ball bearings, it pushes the web towards the flange direction to move precisely, achieving initial approach between the two. Finally, a tight fit is achieved through a propulsion mechanism. Activating the hydraulic cylinder moves the mounting block, causing two rotating rods to open. The rollers at their ends tightly contact the flange side and apply thrust, further eliminating gaps and ensuring a complete fit, providing a stable connection for welding. Compared to traditional hoisting and docking methods, the entire process eliminates the need for high-altitude work. The mechanical mechanism achieves smooth movement and precise docking of components, making operation not only convenient but also enhancing installation stability and safety through multiple limiting and stabilizing structures.

[0007] Preferably, the propulsion mechanism includes a hydraulic cylinder, one end of which is mounted on the top leg of the jig, and the other end of which is fixedly connected to a mounting block. The hydraulic cylinder can drive the mounting block to move by telescoping, thereby driving other components of the propulsion mechanism to exert thrust on the flange.

[0008] Preferably, the mounting block has two rotating rods rotatably connected to its inner side. One end of each rotating rod is fixedly connected to a U-shaped seat, and the inner side of the U-shaped seat is rotatably connected to a roller. The outer side of the roller is in contact with one side of the flange. A tension spring is fixedly connected to the adjacent sides of the two rotating rods. The tension spring can pull the two rotating rods back to their original position when the hydraulic cylinder retracts, so that the roller always remains in contact with the flange, ensuring the stability of thrust transmission.

[0009] Preferably, the advancing mechanism includes a second hydraulic cylinder and a base. One end of the second hydraulic cylinder is fixedly connected to the top side plate of the tire frame, and the other end of the second hydraulic cylinder is fixedly connected to a movable block. The top of the movable block is provided with a slot, and the bottom of the flange is engaged inside the slot. The slot plays a limiting and fixing role for the flange, preventing the flange from shifting laterally during movement and ensuring the accuracy of the movement direction.

[0010] Preferably, the bottom of the base is fixedly connected to the top of the frame, and the outer sides of the movable block are fixedly connected to the combined blocks. The inner side of the combined blocks is rotatably connected to the support wheel, and the outer side of the support wheel contacts the top of the base. The bottom of the movable block is fixedly connected to the toothed plate. The support wheel converts the sliding friction between the movable block and the base into rolling friction, which effectively reduces the resistance when the movable block moves and makes the flange advance smoother.

[0011] Preferably, a plurality of spring telescopic rods are fixedly connected to the inner side of the top groove of the base, and a toothed plate is fixedly connected to the top of the plurality of spring telescopic rods. The outer side of the toothed plate is in contact with the outer side of the toothed plate. The spring telescopic rods provide a continuous upward elastic force to the toothed plate, ensuring that the toothed plate and the toothed plate are always tightly meshed, and the step-like stable movement of the flange is achieved through the tooth engagement.

[0012] Preferably, the auxiliary pushing mechanism includes multiple support blocks and a mounting frame. The bottom of each of the multiple support blocks is fixedly connected to the top of the frame. Two balls are provided on the top of each support block. The outer side of each ball contacts the bottom of the web. The balls can convert the sliding friction between the web and the support blocks into rolling friction, which greatly reduces the resistance when the web moves and facilitates the flexible adjustment of the web.

[0013] Preferably, one side of the mounting frame is fixedly connected to the top of the jig, and a motor is installed at one end of the mounting frame. A bidirectional lead screw is fixedly connected to the output end of the motor. One end of the bidirectional lead screw is rotatably connected to the inner side of the mounting frame. The motor serves as a power source to drive the bidirectional lead screw to rotate, providing stable power for the movement of the web plate and achieving precise control of the web plate position.

[0014] Preferably, a guide rod is fixedly connected inside the mounting frame, two sliders are slidably connected to the outside of the guide rod, and two threaded blocks are threadedly connected to the outside of the bidirectional lead screw. The top of the slider is fixedly connected to the bottom of the threaded block. The cooperation between the guide rod and the slider guides and limits the movement of the threaded block, preventing the threaded block from deviating from the preset trajectory as the bidirectional lead screw rotates, thus ensuring the smoothness of the movement.

[0015] Preferably, a spring telescopic rod two is fixedly connected to one side of the threaded block, and a U-shaped seat two is fixedly connected to one end of the spring telescopic rod two. A roller two is rotatably connected to the inner side of the U-shaped seat two, and the outer side of the roller two is in contact with the outer side of the web plate. The spring telescopic rod two can automatically extend and retract according to the arc shape of the web plate, so that the roller two is always in close contact with the surface of the web plate, ensuring effective pushing of the web plate, while avoiding rigid damage to the web plate.

[0016] In summary, the present invention has at least one of the following beneficial technical effects: 1. This invention significantly improves the convenience and efficiency of gate main beam installation through the coordinated action of various mechanisms. It eliminates the cumbersome operation of traditional lifting components and achieves smooth movement and precise docking of components by using propulsion, advancement and auxiliary pushing mechanisms. This reduces the trouble of manual adjustment. The movement process of each component is stable and controllable, and can quickly complete the fitting, providing a good foundation for welding operations, simplifying the operation process and saving time and labor costs.

[0017] 2. This invention significantly enhances the stability and safety of the installation process. When placing and moving components, the structure of slots, toothed plates, and guide limits effectively prevents components from shifting or moving excessively, ensuring precise and stable docking. At the same time, it avoids the risks of shaking or falling when lifting components. The reliable cooperation of each mechanism makes the entire installation process safer, ensuring the safety of operators and the integrity of components. Attached Figure Description

[0018] Figure 1 This is a front perspective view of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a rear perspective view of the present invention; Figure 4 This is a bottom-view perspective view of the present invention; Figure 5 This is a schematic diagram of the progressive mechanism of the present invention; Figure 6 This is a schematic diagram of the support block of the present invention; Figure 7 This is a schematic diagram of the mounting frame of the present invention; Figure 8This is a schematic diagram of the auxiliary pushing mechanism of the present invention; Figure 9 for Figure 8 Enlarged view of point B in the middle.

[0019] The components are as follows: 1. Jig; 2. Propulsion mechanism; 201. Hydraulic cylinder one; 202. Mounting block; 203. Rotating rod; 204. U-shaped seat one; 205. Roller one; 206. Tension spring; 3. Progression mechanism; 301. Hydraulic cylinder two; 302. Movable block; 303. Slot; 304. Combination block; 305. Support wheel; 306. Tooth plate one; 307. Base; 308. Spring telescopic rod one; 309. Tooth plate two; 4. Auxiliary pushing mechanism; 401. Support block; 402. Ball bearing; 403. Mounting frame; 404. Motor; 405. Two-way lead screw; 406. Threaded block; 407. Spring telescopic rod two; 408. U-shaped seat two; 409. Roller two; 410. Guide rod; 411. Slider; 5. Web plate; 6. Flange. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1 -Appendix Figure 9 The present invention will be further described in detail below.

[0021] This invention provides a novel installation jig for a gate main beam, comprising a jig 1. The jig 1 is an external support structure composed of multiple supporting columns. Two side plates connect the supporting columns on the same side, and finally, multiple connecting plates connect the two side plates, thus forming the foundation of the jig 1. Other structures are then assembled on the outside of the jig 1 to further improve it. This assembly assists in the installation of the web plate 5 and flange 6. Unlike existing installation methods, this method involves rotating the web plate 5 and flange 6 90 degrees and placing them on the jig 1 for welding. A pushing mechanism 2 and two advancing mechanisms 3 are located on the top of the jig 1, both on the same side. An auxiliary pushing mechanism 4 is also located on the top of the jig 1. The web plate 5 and flange 6 are placed on the top of the jig 1, located in the middle of the top of the jig 1. They need to be adjusted to a fitted position before welding. The frame 1 serves as the basic support for the entire device. Its flat top provides a stable platform for the installation of various mechanisms and the placement of components. It can effectively distribute the weight of each component and ensure the stability of the overall structure during operation. The web plate 5 and the flange 6 both have a certain curvature and can fit together completely. They are then welded together to form a whole. The web plate 5 and the flange 6 are relatively heavy. Using traditional hoisting for welding would have a high risk factor and poor hoisting stability, which could easily cause unstable safety factors to the workers.

[0022] The propulsion mechanism 2 includes a hydraulic cylinder 201. One end of the hydraulic cylinder 201 is mounted on the top leg of the frame 1. The other end of the hydraulic cylinder 201 is fixedly connected to a mounting block 202. Two rotating rods 203 are rotatably connected to the inner side of the mounting block 202. One end of the rotating rod 203 is fixedly connected to a U-shaped seat 204. A roller 205 is rotatably connected to the inner side of the U-shaped seat 204. The outer side of the roller 205 is in contact with one side of the flange 6. A tension spring 206 is fixedly connected to the adjacent side of the two rotating rods 203. When the hydraulic cylinder 201 retracts, the tension spring 206 can drive the two rotating rods 203 to reset, so that the roller 205 and the flange 6 remain in contact, so that the flange 6 can be pushed again in the future. The thrust provided by the hydraulic cylinder 201 is transmitted through the mounting block 202 and the rotating rod 203, and finally acts on the flange 6 by the roller 205. This method of force transmission can effectively buffer the thrust and avoid rigid impact on the flange 6. It can achieve the effect of moving the flange 6, and also protect the flange 6.

[0023] The advancing mechanism 3 includes a second hydraulic cylinder 301 and a base 307. One end of the second hydraulic cylinder 301 is fixedly connected to the top side plate of the frame 1, and the other end of the second hydraulic cylinder 301 is fixedly connected to a movable block 302. The top of the movable block 302 has a slot 303, and the bottom of the flange 6 is engaged inside the slot 303. The slot 303 limits the flange 6 and prevents the flange 6 from shifting during movement. The bottom of the base 307 is fixedly connected to the top of the frame 1. Both outer sides of the movable block 302 are fixedly connected to a combination block 304. The inner side of the combination block 304 is rotatably connected to a support wheel 305. The outer side of the support wheel 305 contacts the top of the base 307. The support wheel 305 can reduce the friction between the movable block 302 and the base 307, making the movement of the movable block 302 smoother. The assembly block 304 provides a stable mounting for the support wheel 305, ensuring that the support wheel 305 will not detach from the top of the base 307 during rolling, thus guaranteeing the stability of the movement of the movable block 302.

[0024] A toothed plate 306 is fixedly connected to the bottom of the movable block 302. Multiple spring telescopic rods 308 are fixedly connected to the inner side of the top groove of the base 307. A toothed plate 309 is fixedly connected to the top of the multiple spring telescopic rods 308. The outer side of the toothed plate 309 fits against the outer side of the toothed plate 306. The spring telescopic rods 308 provide an upward elastic force to the toothed plate 309, ensuring that the toothed plate 306 and the toothed plate 309 are always tightly meshed. This ensures that the flange 6 moves stably in a fixed unit through the engagement of the teeth. The multiple spring telescopic rods 308 are evenly distributed in the top groove of the base 307, making the elastic force on the toothed plate 309 more uniform and further enhancing the tightness of the meshing between the toothed plate 306 and the toothed plate 309.

[0025] The auxiliary pushing mechanism 4 includes multiple support blocks 401 and a mounting frame 403. The bottoms of the multiple support blocks 401 are fixedly connected to the top of the frame 1. Two balls 402 are provided on the top of the support blocks 401. The outer side of the balls 402 contacts the bottom of the web 5. The balls 402 convert the sliding friction between the web 5 and the support blocks 401 into rolling friction, reducing the resistance when the web 5 moves. The multiple support blocks 401 are evenly distributed on the top of the frame 1, which can provide multi-point support for the web 5 and prevent the web 5 from deforming due to uneven force during movement.

[0026] One side of the mounting frame 403 is fixedly connected to the top of the jig 1. A motor 404 is mounted on one end of the mounting frame 403. A double-acting lead screw 405 is fixedly connected to the output end of the motor 404. One end of the double-acting lead screw 405 is rotatably connected to the inner side of the mounting frame 403. A guide rod 410 is fixedly connected inside the mounting frame 403. Two sliders 411 are slidably connected to the outer side of the guide rod 410. Two threaded blocks 406 are threadedly connected to the outer side of the double-acting lead screw 405. The top of the sliders 411 is fixedly connected to the bottom of the threaded blocks 406. The cooperation between the guide rod 410 and the sliders 411 guides and limits the movement of the threaded blocks 406, preventing them from rotating with the double-acting lead screw 405. The mounting frame 403 provides a stable mounting space for components such as the motor 404, the double-acting lead screw 405, and the guide rod 410, ensuring that the components do not shift during operation.

[0027] A spring telescopic rod 407 is fixedly connected to one side of the threaded block 406. A U-shaped seat 408 is fixedly connected to one end of the spring telescopic rod 407. A roller 409 is rotatably connected to the inner side of the U-shaped seat 408. The outer side of the roller 409 is in contact with the outer side of the web 5. The spring telescopic rod 407 can automatically extend and retract according to the arc surface of the web 5, so that the roller 409 is always in close contact with the web 5, ensuring the pushing effect. The U-shaped seat 408 fixes the installation angle of the roller 409, ensuring that the roller 409 can always contact the web 5 at a suitable angle, improving the effectiveness of pushing.

[0028] Specifically, firstly, the web plate 5 and flange 6 are placed stably on top of the frame 1. The bottom surface of the web plate 5 is in precise contact with multiple balls 402. The rolling characteristics of the balls 402 eliminate frictional resistance for the subsequent movement of the web plate 5. The flange 6 is securely locked in the slots 303 of the two movable blocks 302. The limiting function of the slots 303 can effectively prevent the flange 6 from shifting laterally during the movement, laying the foundation for subsequent precise docking. Next, the two hydraulic cylinders 301 are activated to apply a continuous and stable thrust to the movable block 302. At this time, the support wheels 305 in the combination blocks 304 on both sides of the movable block 302 will roll smoothly on the top of the base 307, converting the sliding friction between the movable block 302 and the base 307 into rolling friction, which greatly reduces the resistance when the flange 6 moves, making the movement of the flange 6 more effortless and efficient. At the same time, during the movement of the movable block 302, the toothed plate 306 at its bottom will continuously disengage and re-engage with the toothed plate 309 supported by the spring telescopic rod 308 on the base 307. This toothed engagement method can strictly limit the movement distance of the flange 6, ensuring that the flange 6 advances stably and accurately with the teeth as the fixed unit, avoiding excessive movement or deviation. Subsequently, the start motor 404 drives the bidirectional lead screw 405 to rotate. Under the guiding and limiting action of the guide rod 410 and the slider 411, the two threaded blocks 406 on the outer side of the bidirectional lead screw 405 will move smoothly towards or away from each other, effectively preventing the threaded blocks 406 from shifting with the rotation of the lead screw. When the threaded blocks 406 move, they will drive the U-shaped seat 408 to move synchronously, so that the roller 409 rolls on the outside of the web 5. The spring telescopic rod 407 can automatically extend and retract according to the arc shape of the web 5, always keeping the roller 409 in close contact with the surface of the web 5. With the rolling assistance of the bottom ball 402, the web 5 can be easily driven to move precisely towards the flange 6, achieving the initial approach between the two. Finally, the hydraulic cylinder 201 is activated to move the mounting block 202. The mounting block 202 drives the two rotating rods 203 to open outward. The tension spring 206 is stretched and accumulates rebound force. At this time, the roller 205 in the U-shaped seat 204 at the end of the rotating rod 203 will closely fit the side of the flange 6 and apply continuous thrust, further eliminating the gap between the flange 6 and the web 5, ensuring that the two are completely fitted, and providing a stable docking state for subsequent welding. After that, the workers can safely and efficiently carry out welding operations on the web 5 and the flange 6. The whole process does not require lifting the web 5 for docking as in the traditional way. It not only simplifies the operation process and improves the installation efficiency, but also ensures the stability and safety of the docking process through the synergistic effect of various mechanisms, greatly reducing the operation risk.

[0029] Working principle: First, the web plate 5 and the flange 6 are placed on the top of the frame 1. The bottom surface of the web plate 5 is in contact with multiple balls 402, and the flange 6 is locked in the slots 303 of the two movable blocks 302. Then, the two hydraulic cylinders 301 are activated to apply a thrust to the movable blocks 302. Since the support wheel 305 can roll on the top of the base 307, the flange 6 moves more easily. When the movable block 302 moves, the toothed plate 306 and the toothed plate 309 will be constantly misaligned and re-engaged, which can ensure that the flange 6 moves stably in units of teeth. The starter motor 404 drives the bidirectional lead screw 405 to rotate, causing the two threaded blocks 406 to move towards each other or away from each other. With the guidance of the slider 411 and the guide rod 410, the movement is more stable. Moreover, the threaded block 406 will drive the U-shaped seat 408 to move, causing the roller 409 to roll on the outside of the web 5. With the help of the spring telescopic rod 407, it can adapt to the arc surface of the web 5. With the help of the ball bearing 402, the web 5 can move towards the flange 6. Finally, the hydraulic cylinder 201 is activated to move the mounting block 202. The two rotating rods 203 will separate, and the roller 205 will apply a thrust to the flange 6, further bringing the flange 6 into contact with the web plate 5. Then, the workers can weld the web plate 5 and the flange 6 together. This is much more convenient than the traditional method of lifting the web plate 5 and welding it together with the flange 6, and the stability and safety are greatly improved.

Claims

1. A novel mounting frame for a gate main beam, comprising a frame (1), characterized in that, The top of the tire frame (1) is provided with a propulsion mechanism (2), and the top of the tire frame (1) is provided with two advancement mechanisms (3). The propulsion mechanism (2) and the advancement mechanism (3) are located on the same side. The top of the tire frame (1) is provided with an auxiliary propulsion mechanism (4). The top of the tire frame (1) is provided with a web plate (5) and a flange (6). The web plate (5) and the flange (6) are located on the middle side of the top of the tire frame (1).

2. The mounting frame for a novel gate main beam according to claim 1, characterized in that, The propulsion mechanism (2) includes a hydraulic cylinder (201), one end of which is mounted on the top leg of the frame (1), and the other end of which is fixedly connected to an installation block (202).

3. The mounting frame for a novel gate main beam according to claim 2, characterized in that, The mounting block (202) has two rotating rods (203) rotatably connected to its inner side. One end of the rotating rod (203) is fixedly connected to a U-shaped seat (204). The inner side of the U-shaped seat (204) is rotatably connected to a roller (205). The outer side of the roller (205) is in contact with one side of the flange (6). The two rotating rods (203) are fixedly connected to the adjacent sides with tension springs (206).

4. The mounting frame for a novel gate main beam according to claim 1, characterized in that, The advancing mechanism (3) includes a hydraulic cylinder (301) and a base (307). One end of the hydraulic cylinder (301) is fixedly connected to the top side plate of the frame (1), and the other end of the hydraulic cylinder (301) is fixedly connected to a movable block (302). The top of the movable block (302) is provided with a slot (303), and the bottom of the flange (6) is engaged inside the slot (303).

5. The mounting frame for a novel gate main beam according to claim 4, characterized in that, The bottom of the base (307) is fixedly connected to the top of the frame (1). The outer sides of the movable block (302) are fixedly connected to the combination block (304). The inner side of the combination block (304) is rotatably connected to the support wheel (305). The outer side of the support wheel (305) is in contact with the top of the base (307). The bottom of the movable block (302) is fixedly connected to the toothed plate (306).

6. The mounting frame for a novel gate main beam according to claim 5, characterized in that, Multiple spring telescopic rods (308) are fixedly connected to the inner side of the top groove of the base (307), and toothed plates (309) are fixedly connected to the top of the multiple spring telescopic rods (308). The outer side of the toothed plates (309) is in contact with the outer side of the toothed plates (306).

7. The mounting frame for a novel gate main beam according to claim 1, characterized in that, The auxiliary pushing mechanism (4) includes multiple support blocks (401) and a mounting frame (403). The bottom of each of the multiple support blocks (401) is fixedly connected to the top of the frame (1). Two balls (402) are provided on the top of each support block (401). The outer side of each ball (402) is in contact with the bottom of the web plate (5).

8. The mounting frame for a novel gate main beam according to claim 7, characterized in that, One side of the mounting frame (403) is fixedly connected to the top of the jig (1). A motor (404) is installed at one end of the mounting frame (403). A two-way lead screw (405) is fixedly connected to the output end of the motor (404). One end of the two-way lead screw (405) is rotatably connected to the inner side of the mounting frame (403).

9. The mounting frame for a novel gate main beam according to claim 8, characterized in that, The mounting frame (403) is fixedly connected to a guide rod (410), and two sliders (411) are slidably connected to the outside of the guide rod (410). The two-way lead screw (405) is threadedly connected to two threaded blocks (406), and the top of the slider (411) is fixedly connected to the bottom of the threaded block (406).

10. The mounting frame for a novel gate main beam according to claim 9, characterized in that, A spring telescopic rod 2 (407) is fixedly connected to one side of the threaded block (406), and a U-shaped seat 2 (408) is fixedly connected to one end of the spring telescopic rod 2 (407). A roller 2 (409) is rotatably connected to the inner side of the U-shaped seat 2 (408), and the outer side of the roller 2 (409) is in contact with the outer side of the web plate (5).

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