A temporary reinforcement welding device for soft rock support with a rotatable welding head

Abstract

The present invention relates to the technical field of soft rock support welding, and discloses a soft rock support temporary reinforcement welding device with a rotatable welding head, including a feeding part. The feeding part includes a base, and a rotating shaft is rotatably connected to the upper surface of the base through a connecting seat. This soft rock support temporary reinforcement welding device with a rotatable welding head can effectively solve the problems in the prior art. The soft rock support is composed of U-shaped steel in four parts: the bottom arc section, the two side arc sections, and the top arc section. Due to the stress concentration at the joints of the bottom and side U-shaped steel, deformation and cracks are likely to occur. It is necessary to use reinforcing rib plates for welding reinforcement at the corners. The traditional feeding process of the reinforcing rib plates relies on manual operation, which has a large labor intensity, affects the work efficiency, may also cause operation errors due to fatigue, reduces the welding quality, and thus affects the connection strength and overall stability between the reinforcing rib plates and the soft rock support structure.

Description

Technical Field

[0001] The present invention relates to the technical field of soft rock support welding, and particularly relates to a soft rock support temporary reinforcement welding device with a rotatable welding head. Background Art

[0002] Soft rock support refers to a series of technical measures for reinforcing and stabilizing surrounding rocks in underground projects under soft rock geological conditions, such as tunnels, mine roadways, etc. Due to the large deformation, large surrounding rock pressure, and easy instability of soft rocks, special support methods need to be adopted to ensure the safety and stability of the project. The U-shaped steel supports for supporting such surrounding rocks often have the characteristics of large strength, full enclosure, and good integrity. Using soft rock support can prevent the surrounding rocks from being overly relaxed and damaged, causing losses.

[0003] Soft rock support is composed of U-shaped steel in four parts: a bottom arc section, two side arc sections, and a top arc section. Since the joints of the U-shaped steel at the bottom side and the side edges are subjected to stress concentration, they are prone to deformation and cracking conditions, and it is necessary to use stiffening rib plates for welding reinforcement at the corners. The traditional feeding process of the stiffening rib plates relies on manual operation, with high labor intensity, affecting work efficiency, and may also cause operation errors due to fatigue, reducing the welding quality, thereby affecting the connection strength and overall stability between the stiffening rib plates and the soft rock support structure. Summary of the Invention

[0004] Technical Problem to be Solved

[0005] Aiming at the above-mentioned disadvantages of the prior art, the present invention provides a soft rock support temporary reinforcement welding device with a rotatable welding head, which can effectively solve the problems in the prior art that the soft rock support is composed of U-shaped steel in four parts: a bottom arc section, two side arc sections, and a top arc section. Since the joints of the U-shaped steel at the bottom side and the side edges are subjected to stress concentration, they are prone to deformation and cracking conditions, and it is necessary to use stiffening rib plates for welding reinforcement at the corners. The traditional feeding process of the stiffening rib plates relies on manual operation, with high labor intensity, affecting work efficiency, and may also cause operation errors due to fatigue, reducing the welding quality, thereby affecting the connection strength and overall stability between the stiffening rib plates and the soft rock support structure.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0007] The present invention provides a soft rock support temporary reinforcement welding device with a rotatable welding head, including:

[0008] Loading section, the loading section includes a base, the upper surface of the base is rotatably connected to a rotating shaft through a connecting seat, the outer circumferential surface of the rotating shaft is fixedly connected with a front rod and a rear rod, the front rod and the rear rod are distributed in an angular staggered manner, and both ends of the front rod and the rear rod away from the rotating shaft are rotatably connected to a placing seat through a rotating shaft seat, and a positioning member capable of fitting with an external reinforcing rib plate is arranged on the placing seat;

[0009] Welding section, the welding section includes a drive box, one side of the drive box is fixedly connected to the outer surface of the base, and the drive box is slidably connected with a welding head through an annular frame arranged on its outer surface;

[0010] Among them, the positioning member includes an inclined groove opened inside the placing seat, a positioning plate is slidably connected inside the inclined groove, anti-slip strips are fixedly connected to the outer surface of the positioning plate, a counterweight column is slidably connected to the placing seat through a moving groove opened inside it, the inclined groove is internally connected to the moving groove, a positioning groove is opened inside the positioning plate, a connecting block is fixedly connected to the outer circumferential surface of the counterweight column, and a magnetic plate is fixedly connected to the side of the connecting block away from the counterweight column through the placing seat.

[0011] Further, a rotating rod is rotatably connected to the side of the placing seat close to the magnetic plate through a pin shaft, a suction plate magnetically connected to the outer surface of the magnetic plate is fixedly connected to the end of the rotating rod away from the pin shaft, a support frame fitting with the outer surface of the rotating rod is fixedly connected to the upper surface of the base, and an arc-shaped block is fixedly connected to the side of the drive box close to the placing seat.

[0012] Further, it further includes a fixing section, the fixing section includes a connecting rod, the connecting rod is fixedly connected to the side of the annular frame away from the drive box, a cylinder is fixedly connected to the outer surface of the connecting rod, the output end of the cylinder is damping rotatably connected to a pressing plate, and a clamping mechanism is arranged at the end of the connecting rod away from the drive box;

[0013] Further, the clamping mechanism includes a connecting block, a support rod is fixedly connected to the outer surface of the connecting block, an inner clamping rod is fixedly connected to the side of the support rod close to the connecting rod, an outer clamping rod is slidably connected to the inner clamping rod through a cavity opened inside it, and a spring connected to the bottom end of the outer clamping rod is arranged inside the cavity.

[0014] Further, two support rods are provided and symmetrically distributed with the pressing plate as the center, and both the inner clamping rod and the outer clamping rod are designed in an arc shape.

[0015] Further, an external connecting rod is fixedly connected to the outer surface of the outer clamping rod away from the inner clamping rod, a connecting rod is rotatably connected to the end of the external connecting rod away from the placing seat, a sliding rod sliding inside the connecting block is rotatably connected to the end of the connecting rod away from the external connecting rod, and a fixing member is arranged inside the sliding rod.

[0016] Further, the fixing member includes a pull ring, the pull ring is fixedly connected to one end of the sliding rod away from the external rod, a ratchet groove is formed on the outer surface of the sliding rod, and a limiting plate is rotatably connected to one side of the connecting block close to the pull ring through a fixing seat.

[0017] The technical solution provided by the present invention has the following beneficial effects compared with the prior art:

[0018] The present invention is provided with a rotating shaft, a front rod, a rear rod and a placing seat. In the initial state, the placing seat is in a horizontal state, which is beneficial to loading the reinforcing rib plate in this state. By rotating the rotating shaft, the front rod and the rear rod are driven to rotate, moving one side of the placing seat towards the fixing part while rotating. The placing seat changes from a horizontal state to a vertical state, and finally its open end is slightly inclined with the ground. During this process, the magnetism between the magnetic plate and the suction plate, as well as the states of the counterweight column and the rotating rod at different inclination angles, can be utilized to realize that in the initial state, the counterweight column does not position the positioning plate, and in the initial horizontal state, the positioning plate is not fixed, which is beneficial to saving space, facilitating loading and operation; when the placing seat rotates, the positioning plate passes through the arc-shaped block and stably clamps the external reinforcing rib plate under the action of the counterweight column; after rotating more than ninety degrees, under the action of magnetic force, the counterweight column moves upward and no longer fixes the positioning plate, and the reinforcing rib plate slides smoothly onto the upper surface of the U-shaped steel and fits with it. By rotating the rotating shaft, the placing seat can be changed from a horizontal state to a vertical state, and at the same time, the placement and positioning of the reinforcing rib plate are completed. The operation process is simple and fast, and the whole process does not require complex manual adjustment or additional tools, improving work efficiency. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0020] Figure 1 It is a structural schematic diagram of an external U-shaped steel soft rock support frame and a reinforcing rib plate;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0022] Figure 3 It is a multi-angle structural schematic diagram of an embodiment of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the feeding part of an embodiment of the present invention;

[0024] Figure 5Schematic cross-sectional structure diagram of the placement seat according to an embodiment of the present invention;

[0025] Figure 6 Schematic structure diagram of the positioning plate, counterweight column and rotating rod according to an embodiment of the present invention;

[0026] Figure 7 Schematic structure diagram of the connecting rod and the clamping mechanism according to an embodiment of the present invention;

[0027] Figure 8 Schematic structure diagram of the inner clamping rod, outer clamping rod and pressing plate according to an embodiment of the present invention;

[0028] Figure 9 According to an embodiment of the present invention Figure 7 Schematic diagram of the enlarged structure of part A in the middle;

[0029] Figure 10 Schematic cross-sectional structure diagram of the support rod, inner clamping rod and outer clamping rod according to an embodiment of the present invention.

[0030] The reference numerals in the figure respectively represent: 1. Loading part; 11. Base; 12. Rotating shaft; 13. Front rod; 14. Rear rod; 15. Placement seat; 16. Positioning member; 161. Positioning plate; 1611. Anti-slip strip; 1612. Positioning groove; 162. Counterweight column; 163. Connecting block; 164. Magnetic plate; 165. Rotating rod; 166. Sucking plate; 167. Support frame; 168. Arc-shaped block; 2. Welding part; 21. Driving box; 22. Ring-shaped frame; 23. Welding head; 3. Fixing part; 31. Connecting rod; 32. Pressing plate; 33. Clamping mechanism; 331. Connecting block; 332. Support rod; 333. Inner clamping rod; 334. Outer clamping rod; 335. Spring; 336. External connecting rod; 337. Link; 338. Sliding rod; 34. Fixing member; 341. Ratchet groove; 342. Limiting plate. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] The present invention will be further described below with reference to the embodiments.

[0033] Embodiment:

[0034] Please refer to Figures 1 - 10 , the present invention provides a technical solution: a soft rock support temporary reinforcement welding device with a rotatable welding head, including:

[0035] The feeding part 1, the feeding part 1 includes a base 11, a rotating shaft 12 is rotatably connected to the upper surface of the base 11 through a connecting seat, a front rod 13 and a rear rod 14 are fixedly connected to the circumferential outer surface of the rotating shaft 12, the front rod 13 and the rear rod 14 are distributed in an angular staggered manner, and one ends of the front rod 13 and the rear rod 14 far from the rotating shaft 12 are both rotatably connected to a placing seat 15 through a rotating shaft seat, and a positioning member 16 that can be attached to an external reinforcing rib plate is arranged on the placing seat 15;

[0036] The welding part 2, the welding part 2 includes a driving box 21, one side of the driving box 21 is fixedly connected to the outer surface of the base 11, and a welding head 23 is slidably connected to the driving box 21 through an annular frame 22 arranged on its outer surface;

[0037] Among them, the positioning member 16 includes an inclined groove opened inside the placing seat 15, a positioning plate 161 is slidably connected inside the inclined groove, an anti-slip strip 1611 is fixedly connected to the outer surface of the positioning plate 161, a counterweight column 162 is slidably connected to the placing seat 15 through a moving groove opened inside it, the inclined groove is internally connected to the moving groove, a positioning groove 1612 is opened inside the positioning plate 161, a connecting block 163 is fixedly connected to the circumferential outer surface of the counterweight column 162, and one side of the connecting block 163 far from the counterweight column 162 penetrates through the placing seat 15 and is fixedly connected to a magnetic plate 164.

[0038] One side of the placing seat 15 close to the magnetic plate 164 is rotatably connected to a rotating rod 165 through a pin shaft, one end of the rotating rod 165 far from the pin shaft is fixedly connected to a suction plate 166 magnetically connected to the outer surface of the magnetic plate 164, a support frame 167 that fits the outer surface of the rotating rod 165 is fixedly connected to the upper surface of the base 11, and an arc-shaped block 168 is fixedly connected to one side of the driving box 21 close to the placing seat 15.

[0039] It further includes a fixing part 3, the fixing part 3 includes a connecting rod 31, the connecting rod 31 is fixedly connected to the side of the annular frame 22 far from the driving box 21, a cylinder is fixedly connected to the outer surface of the connecting rod 31, the output end of the cylinder is rotatably connected to a pressing plate 32 in a damped manner, and a clamping mechanism 33 is arranged at one end of the connecting rod 31 far from the driving box 21;

[0040] The clamping mechanism 33 includes a connecting block 331, a support rod 332 is fixedly connected to the outer surface of the connecting block 331, an inner clamping rod 333 is fixedly connected to one side of the support rod 332 close to the connecting rod 31, an outer clamping rod 334 is slidably connected to the inner clamping rod 333 through a cavity opened inside it, and a spring 335 connected to the bottom end of the outer clamping rod 334 is arranged inside the cavity.

[0041] There are two support rods 332 and they are symmetrically distributed with the pressing plate 32 as the center, and both the inner clamping rod 333 and the outer clamping rod 334 are designed in an arc shape.

[0042] An outer clamping rod 334 is fixedly connected to the outer surface away from the inner clamping rod 333 with an external connecting rod 336. One end of the external connecting rod 336 away from the placement seat 15 is rotatably connected to a connecting rod 337. One end of the connecting rod 337 away from the external connecting rod 336 is rotatably connected to a sliding rod 338 that slides inside the connecting block 331, and a fixing member 34 is arranged inside the sliding rod 338.

[0043] The fixing member 34 includes a pull ring. The pull ring is fixedly connected to the end of the sliding rod 338 away from the external connecting rod 336. A ratchet groove 341 is formed on the outer surface of the sliding rod 338. One side of the connecting block 331 close to the pull ring is rotatably connected to a limiting plate 342 through a fixing seat.

[0044] The process of stably clamping the U-shaped steel:

[0045] In practical applications, the driving box 21 is moved to the required welding position through the slide rail inside the tunnel, so that the clamping mechanism 33 is on one side of the U-shaped steel, the feeding part 1 is on the other side of the U-shaped steel, the connecting rod 31 and the pressing plate 32 are on the upper part of the U-shaped steel, and the sides of the two inner clamping rods 333 close to the outer clamping rod 334 are in contact with the inner circumferential surface of the U-shaped steel. In the initial state, the spring 335 in the clamping mechanism 33 is in an open state, the gap between the inner clamping rod 333 and the outer clamping rod 334 is in the maximum state, and the gap at the opening of the inner clamping rod 333 and the outer clamping rod 334 is larger than the thickness of the external U-shaped steel. The ends of the two outer clamping rods 334 in the clamping mechanism 33 away from the connecting block 331 both protrude from the outer surface of the groove of the U-shaped steel. The two outer clamping rods 334 are respectively on the outer surface of the bottom arc section and the side arc section of the U-shaped steel. The plate where the pull ring at the outer end of the sliding rod 338 is located is in contact with the outer surface of the connecting block 331.

[0046] Slide the driving box 21 a short distance away from the fixing part 3 on the slide rail, so that both outer clamping rods 334 enter the groove on the outer surface of the U-shaped steel. At this time, the inner surface of the inner clamping rod 333 is close to the outer surface of the U-shaped steel. Then pull the pull ring outwards. The sliding rod 338 inside the connecting block 331 moves obliquely upwards under the action of the pull ring. The ratchet groove 341 formed on the upper surface of the sliding rod 338 moves along with it. The limiting plate 342 is rotatably connected through the fixing seat arranged on the outer surface of the connecting block 331. Under the action of its own gravity and the limitation of the fixing seat, the bottom end of the limiting plate 342 always drops towards the side of the ratchet groove 341. When pulling the pull ring to move the sliding rod 338 upwards, the bottom end of the limiting plate 342 changes from contacting the outer surface of the sliding rod 338 to contacting the inner wall of the ratchet groove 341.

[0047] When the sliding rod 338 moves upward, a connecting rod 337 is rotatably connected to one end of the sliding rod 338 away from the pull ring. The other end of the connecting rod 337 is rotatably connected to the external connecting rod 336, and the external connecting rod 336 is fixedly connected to the outer surface of the outer clamping rod 334. When the sliding rod 338 moves obliquely upward, the outer clamping rod 334 is affected by it through the connecting rod 337 and moves inward toward the inner clamping rod 333 inside the cavity. The outer clamping rod 334 that fits the arc section of the U-shaped steel bottom plate moves vertically upward, and the outer clamping rod 334 that fits the arc section of the side of the U-shaped steel moves horizontally toward the inner clamping rod 333. The outer clamping rod 334 is designed in an arc shape and fits tightly against the inner wall of the groove on the outer surface of the U-shaped steel. At the same time, after stable clamping, the limiting plate 342 finally lies inside the ratchet groove 341 of this position section and is stably clamped.

[0048] The process of placing the reinforcing rib plate:

[0049] At this time, both the arc section of the side of the U-shaped steel and the arc section of the bottom plate are stably clamped by the clamping mechanism 33. The reinforcing rib plate is placed into the placing seat 15 through an external device for storing the reinforcing rib plate or manually. In the initial state, the rotating rod 165 is in an upwardly inclined state under the support of the support frame 167. The rotating rod 165 is located on the outer surface of the placing seat 15 near the base 11 and is not centered, which is beneficial for the support frame 167 to prop up the rotating rod 165 and attract the magnetic plate 164. The suction plate 166 at the outer end of the rotating rod 165 is attracted to the magnetic plate 164. The counterweight column 162 is at one end of the moving groove near the rotating rod 165. The positioning plate 161 is inside the inclined groove and protrudes toward the inner wall of the placing seat 15. The positioning plate 161 slides smoothly against the inner wall of the inclined groove. When the reinforcing rib plate is placed into the placing seat 15, due to the inclined design of the positioning plate 161, when the reinforcing rib plate is inserted, the positioning plate 161 can be pushed outward in the inclined groove toward the outside of the placing seat 15.

[0050] After the reinforcing rib plate is placed inside the placement seat 15, the drive box 21 drives the rotating shaft 12 to rotate inside the connecting seat, and the front rod 13 and the rear rod 14 fixedly connected to the outer surface of the rotating shaft 12 rotate together. The front rod 13 and the rear rod 14 form a certain angle in the initial state. Both the front rod 13 and the rear rod 14 are rotationally connected to the placement seat 15 through the rotating shaft seats. The rotating shaft seat connected to the rear rod 14 is longer, and the rear rod 14 adopts a two-section design, so that the placement seat 15 can move and flip around the rotating shaft 12. The front rod 13 and the rear rod 14 are respectively rotationally connected to the front and rear positions at the bottom of the placement seat 15 to drive the placement seat 15 to move. The placement seat 15 rises upward, its bottom is separated from the upper surface of the base 11, and it begins to tilt slightly. During the movement of the placement seat 15, the side of the positioning plate 161 close to the drive box 21 fits against the arc-shaped block 168 on the outer surface of the drive box 21. Under the action of the outer surface of the arc-shaped block 168, the positioning plate 161 is driven to slide into the placement seat 15 along the inner wall of the smooth inclined groove. At this time, the anti-slip strip 1611 on the outer surface of the positioning plate 161 is in close contact with the side wall of the reinforcing rib plate. The anti-slip strip 1611 undergoes elastic deformation under the action of the extrusion force, and the angle of the positioning groove 1612 inside the positioning plate 161 coincides with the angle of the moving groove.

[0051] At this time, since the placement seat 15 is in a slightly tilted state, the side of the rotating rod 165 loses the support of the support frame 167 and always remains perpendicular to the ground. The counterweight column 162 is on the smooth inner wall of the moving groove. The gravity of the counterweight column 162 and the rotating rod 165 is greater than the magnetic force between the magnetic plate 164 and the suction plate 166. Affected by gravity, the counterweight column 162 moves towards the end away from the rotating rod 165. The counterweight column 162 slides into the positioning groove 1612 inside the bottom positioning plate 161, fixing the positioning plate 161 at this position and stably positioning the reinforcing rib plate between the placement seat 15 and the anti-slip strip 1611 on the outer surface of the positioning plate 161.

[0052] As the rotating shaft 12 continues to rotate, the reinforcing rib plate is moved from inside the placement seat 15 towards the fixing part 3 until the placement seat 15 is in a vertical state, and the reinforcing rib plate is still stably fixed. As the rotating shaft 12 continues to rotate, the placement seat 15 continues to tilt from the vertical state, and the open end of the placement seat 15 tilts downward. At this time, the placement seat 15 is already on the upper surface of the arc section of the U-shaped steel bottom plate. At the same time, under the action of gravity, the suction plate 166 at the outer end of the rotating rod 165 is parallel to the magnetic plate 164, and the adjacent surfaces of the suction plate 166 and the magnetic plate 164 begin to approach. At this time, the gravity of the counterweight column 162 is less than the magnetic force between the suction plate 166 and the magnetic plate 164. The counterweight column 162 extends to the outer magnetic plate 164 through the connecting block 163 and is attracted by the suction plate 166. The counterweight column 162 slides upward, and the positioning plate 161 is no longer positioned by the counterweight column 162.

[0053] The reinforcing rib plate has a certain weight and extrudes the positioning plate 161 outward inside the inclined groove. Since arc-shaped notches are provided at both ends of the reinforcing rib plate in advance, it can fit with the arc-shaped inner surface of the U-shaped steel. After the reinforcing rib plate slides out of the placement seat 15, the arc-shaped notch of the reinforcing rib plate coincides with the arc-shaped inner surface of the U-shaped steel, and the reinforcing rib plate is clamped on the surface of the U-shaped steel.

[0054] By driving the driving box 21 to rotate the rotating shaft 12 in the opposite direction, the placement seat 15 is driven to tilt slightly downward from the open end and then turn perpendicular to the ground, and then continue to rotate to restore to its initial state. During this process, there is no other object inside the placement seat 15, and the positioning plate 161 slides downward under the influence of gravity and protrudes from the inner wall surface of the placement seat 15. As the placement seat 15 tilts, the rotating rod 165 is perpendicular to the ground, and the gravity of the counterweight column 162 and the rotating rod 165 is greater than the magnetic force between the magnetic plate 164 and the suction plate 166. The counterweight column 162 moves under the influence of gravity to the end away from the rotating rod 165 and slides into the positioning groove 1612 inside the bottom positioning plate 161. Until the lower surface of the placement seat 15 fits with the upper surface of the base 11 and returns to its initial state. The rotating rod 165 is supported by the support frame 167 and is in an upwardly inclined state. At this time, the suction plate 166 at its outer end is parallel to the magnetic plate 164, and the adjacent surfaces of the suction plate 166 and the magnetic plate 164 are close. The gravity of the counterweight column 162 is less than the magnetic force between the suction plate 166 and the magnetic plate 164, and the counterweight column 162 extends to the outer magnetic plate 164 through the connecting block 163 and is attracted by the suction plate 166, and the counterweight column 162 moves toward the side close to the rotating rod 165 in the smooth moving groove.

[0055] The process of welding the reinforcing rib plate on the surface of the U-shaped steel soft rock support frame:

[0056] After the reinforcing rib plate is placed, the air cylinder is started to squeeze the pressing plate 32 downward. The pressing plate 32 is rotationally connected to the outer end of the air cylinder in a damping manner, and the rotation angle can be set in advance according to the placement position of the welded reinforcing rib plate. The surface of the pressing plate 32 away from the air cylinder is fixedly connected to the outer surface of the reinforcing rib plate, and the reinforcing rib plate is stably squeezed and held in this position. The welding head 23 is started. The welding head 23 switches the rotation position through the annular frame 22, and the welding head 23 can rotate by itself, and can firmly weld the reinforcing rib plate on the soft rock support. During this process, no manual support is required, improving the safety performance.

[0057] After welding is completed, the pressing plate 32 is retracted by the air cylinder, and the pull ring is slightly pulled to slightly move the sliding rod 338 away from the pressing plate 32. The limiting plate 342 and the ratchet groove 341 are no longer in close contact. By pressing the upper end of the limiting plate 342, it is in a parallel state with the sliding rod 338. At this time, the spring 335 inside the cavity loses the extrusion effect, and under the action of its tension, the outer clamping rod 334 is elastically pushed outwards. The distance between the outer clamping rod 334 and the inner clamping rod 333 returns to the initial state, and the distance between the outer clamping rod 334 and the inner clamping rod 333 is greater than the thickness of the U-shaped steel. The drive box 21 is slid a short distance on the slide rail in the direction close to the fixing part 3, so that the clamping mechanism 33 is completely disengaged from the fixing of the soft rock support.

[0058] In summary, there are the following advantages in the welding process of the stiffening rib plate and the soft rock support:

[0059] Advantage 1: By driving the front rod 13 and the rear rod 14 to rotate through the rotating shaft 12, the placing seat 15 is changed from the initial horizontal state to perpendicular to the ground and then slightly inclined to the ground. The stiffening rib plate with an arc-shaped notch is placed on the upper surface of the U-shaped steel bracket, realizing mechanized operation and reducing the complexity of manual operation.

[0060] Advantage 2: Utilizing the magnetism between the magnetic plate 164 and the suction plate 166, and the states of the counterweight column 162 and the rotating rod 165 at different inclination angles, it is realized that in the initial state, the counterweight column 162 does not position the positioning plate 161, and the stiffening rib plate is conveniently placed inside the placing seat 15. After tilting, the positioning plate 161 is squeezed inwards by the arc-shaped block 168, and the gravity of the counterweight column 162 and the rotating rod 165 is greater than the magnetism between the magnetic plate 164 and the suction plate 166. The counterweight column 162 slides down to stabilize the positioning plate 161 at this position. When discharging, the placing seat 15 rotates more than ninety degrees, and the suction plate 166 at the outer end of the rotating rod 165 approaches the magnetic plate 164 under the action of gravity, sucking the counterweight column 162 upwards, and the positioning plate 161 loses its positioning function. The stiffening rib plate slides down to the upper surface of the U-shaped steel bracket under its own action, smoothly realizing the clamping force required for different steps, and realizing the automatic positioning and release functions by using magnetism, gravity and mechanical principles, reducing manual intervention and improving the automation level.

[0061] Advantage 3: There are two support rods 332, inner clamping rods 333 and outer clamping rods 334 symmetrically distributed with the pressing plate 32 as the center, and a certain angle is formed between the two inner clamping rods 333 and outer clamping rods 334, which can meet the clamping actions for the arc section of the U-shaped steel bottom plate and the arc sections on both sides. The inner clamping rod 333 and the outer clamping rod 334 both adopt an arc-shaped design that fits the outer surface of the U-shaped steel, and can clamp the two U-shaped steels more stably, ensuring the stability during the welding process.

[0062] Advantage 4: Pulling the pull ring outwards can pull the outer clamping rod 334 towards the inner clamping rod 333. Through the engagement of the limiting plate 342 in the fixing member 34 with the ratchet groove 341 on the outer surface of the sliding rod 338, the outer surfaces of both the outer clamping rod 334 and the inner clamping rod 333 are in contact with the U-shaped steel, which can meet the clamping requirements of U-shaped steels with different thicknesses, has strong adaptability, and improves the overall flexibility.

[0063] Advantage 5: After the reinforcing rib plate is stably placed on the device, the air cylinder is started to squeeze the reinforcing rib plate between the two end U-shaped steels through the pressing plate 32. During the welding process, manual support is not required, which improves the safety performance. The welding head 23 is slidably connected through the annular frame 22, which can meet the welding requirements at different angles and has high flexibility. At the same time, in addition to welding the reinforcing rib plate, it can also be directly used as the connection of two U-shaped steel soft rock supports with an inclined angle through the clamping mechanism 33.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A temporary reinforcement welding device for soft rock support provided with a rotatable welding head, characterized in that: include: A loading part (1), the loading part (1) comprising a base (11), the upper surface of the base (11) being rotatably connected to a rotating shaft (12) via a connecting seat, the circumferential outer surface of the rotating shaft (12) being fixedly connected to a front rod (13) and a rear rod (14), the front rod (13) and the rear rod (14) being distributed at an included angle, the ends of the front rod (13) and the rear rod (14) away from the rotating shaft (12) being rotatably connected to a placement seat (15) via a rotating shaft seat, the placement seat (15) being provided with a positioning member (16) which can fit with an external reinforcing rib plate; A welding part (2), the welding part (2) comprising a driving box (21), one side of the driving box (21) being fixedly connected to the outer surface of the base (11), and the driving box (21) being slidably connected to a welding head (23) via an annular frame (22) arranged on the outer surface thereof; The positioning member (16) comprises an inclined groove provided inside the placement seat (15), a positioning plate (161) is slidably connected inside the inclined groove, an anti-slip strip (1611) is fixedly connected to the outer surface of the positioning plate (161), the placement seat (15) is slidably connected to a counterweight column (162) via a shifting groove provided inside the placement seat (15), the inclined groove is connected to the inside of the shifting groove, a positioning groove (1612) is provided inside the positioning plate (161), a connecting block (163) is fixedly connected to the circumferential outer surface of the counterweight column (162), and a side of the connecting block (163) away from the counterweight column (162) passes through the placement seat (15) and is fixedly connected to a magnetic plate (164); The side of the placement seat (15) close to the magnetic plate (164) is rotatably connected to a rotating rod (165) through a pin shaft, and the end of the rotating rod (165) away from the pin shaft is fixedly connected to an attraction plate (166) magnetically connected to the outer surface of the magnetic plate (164), and the upper surface of the base (11) is fixedly connected to a support frame (167) that fits the outer surface of the rotating rod (165). The side of the driving box (21) close to the placement seat (15) is fixedly connected to an arc block (168), and the positioning plate (161) is designed to be inclined so that the reinforcing rib plate is placed When the positioning plate (161) is placed inside the placement seat (15), it is possible to push the positioning plate (161) inside the inclined groove toward the outside of the placement seat (15). When the driving box (21) drives the rotating shaft (12) to rotate inside the connecting seat, the placement seat (15) begins to tilt slightly, and the side of the positioning plate (161) close to the driving box (21) fits with the arc block (168) on the outer surface of the driving box (21). Under the action of the outer surface of the arc block (168), the positioning plate (161) is driven to fit the smooth inner wall of the inclined groove and slide toward the inside of the placement seat (15).

2. A temporary reinforcement welding device for soft rock support with a rotatable welding head according to claim 1, characterized in that: The invention also comprises a fixing part (3), wherein the fixing part (3) comprises a connecting rod (31), wherein the connecting rod (31) is fixedly connected to a side of the annular frame (22) away from the driving box (21), wherein an outer surface of the connecting rod (31) is fixedly connected to a cylinder, wherein an output end of the cylinder is connected to a pressure plate (32) in a damping rotation manner, and a clamping mechanism (33) is provided at one end of the connecting rod (31) away from the driving box (21).

3. A temporary reinforcement welding device for soft rock support with a rotatable welding head according to claim 2, characterized in that: The clamping mechanism (33) includes a connecting block (331), the outer surface of which is fixedly connected to a support rod (332), the support rod (332) being fixedly connected to an inner clamping rod (333) on one side close to the connecting rod (31), the inner clamping rod (333) being slidably connected to an outer clamping rod (334) via a cavity provided inside the inner clamping rod, and a spring (335) connected to the bottom end of the outer clamping rod (334) is provided inside the cavity.

4. A temporary reinforcement welding device for soft rock support with a rotatable welding head according to claim 3, characterized in that: Two support rods (332) are provided and are symmetrically distributed with the pressure plate (32) as the center, and the inner clamping rod (333) and the outer clamping rod (334) are both designed in an arc shape.

5. A temporary reinforcement welding device for soft rock support with a rotatable welding head according to claim 4, characterized in that: The outer surface of the outer clamping rod (334) away from the inner clamping rod (333) is fixedly connected to an outer connecting rod (336), one end of the outer connecting rod (336) away from the placement seat (15) is rotatably connected to a connecting rod (337), and one end of the connecting rod (337) away from the outer connecting rod (336) is rotatably connected to a sliding rod (338) that slides with the inside of the connecting block (331), and a fixing piece (34) is arranged inside the sliding rod (338).

6. A temporary reinforcement welding device for soft rock support with a rotatable welding head according to claim 5, characterized in that: The fixing member (34) comprises a pull ring, which is fixedly connected to an end of the sliding rod (338) away from the external connecting rod (336), and a ratchet groove (341) is provided on the outer surface of the sliding rod (338). The side of the connecting block (331) close to the pull ring is rotatably connected to the limiting plate (342) through a fixing seat.

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