Soft rock support temporary reinforcement welding device with rotatable welding head

Abstract

The invention relates to the technical field of soft rock support welding, and discloses a soft rock support temporary reinforcement welding device provided with a rotatable welding head, the soft rock support temporary reinforcement welding device comprises a feeding part, the feeding part comprises a base, and the upper surface of the base is rotatably connected with a rotating shaft through a connecting seat. The soft rock support temporary reinforcing welding device with the rotatable welding head can effectively solve the problems that in the prior art, a soft rock support is composed of U-shaped steel of a bottom plate arc section, two side arc sections and a top plate arc section, and due to the fact that stress borne by the connecting positions of the U-shaped steel on the bottom side and the side edges is concentrated, deformation and cracks are prone to occurring; the problems that in the prior art, welding reinforcement needs to be conducted at the corners through reinforcing rib plates, the traditional feeding process of the reinforcing rib plates depends on manual operation, the labor intensity is large, the working efficiency is affected, operation errors are possibly caused by fatigue, the welding quality is reduced, and therefore the connection strength and the overall stability of the reinforcing rib plates and the soft rock supporting structure are affected are solved.

Description

Technical Field

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

[0002] Soft rock support refers to a series of technical measures taken to strengthen and stabilize the surrounding rock for underground projects under soft rock geological conditions, such as tunnels and mine tunnels. Due to the large deformation of soft rock, high surrounding rock pressure and easy instability, special support methods are required to ensure the safety and stability of the project. The U-shaped steel bracket supporting such surrounding rock is often strong, fully enclosed and has good integrity. The use of soft rock support can avoid damage caused by excessive relaxation of the surrounding rock and cause losses.

[0003] The soft rock support is composed of U-shaped steel in four parts: the bottom plate arc section, the two side arc sections and the top plate arc section. Due to the stress concentration at the joints of the bottom and side U-shaped steels, deformation and cracks are prone to occur. It is necessary to use reinforcing ribs to weld and reinforce the corners. The traditional reinforcing plate material loading process relies on manual operation, which is labor-intensive and affects work efficiency. It may also cause operational errors due to fatigue, reduce welding quality, and thus affect the connection strength and overall stability of the reinforcing ribs and the soft rock support structure. Summary of the invention

[0004] Technical issues solved In view of the above-mentioned shortcomings of the prior art, the present invention provides a temporary reinforcement welding device for soft rock support provided with a rotatable welding head, which can effectively solve the problem in the prior art that the soft rock support is composed of U-shaped steel of four parts, namely, the bottom plate arc segment, the two side arc segments and the top plate arc segment. Due to the stress concentration at the connection between the bottom and side U-shaped steels, deformation and cracks are prone to occur, and it is necessary to use reinforcing rib plates for welding reinforcement at the corners. The traditional reinforcing plate loading process relies on manual operation, which is labor-intensive and affects work efficiency. It may also cause operational errors due to fatigue, reduce welding quality, and thus affect the connection strength and overall stability of the reinforcing rib plate and the soft rock support structure.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a temporary reinforcement welding device for soft rock support provided with a rotatable welding head, comprising: A loading part, the loading part includes a base, the upper surface of the base is rotatably connected to a rotating shaft through a connecting seat, the circumferential outer surface of the rotating shaft is fixedly connected to a front rod and a rear rod, the front rod and the rear rod are distributed at an angle staggered, the ends of the front rod and the rear rod away from the rotating shaft are rotatably connected to a placement seat through a rotating shaft seat, and a positioning piece that can fit with the external reinforcing rib plate is provided on the placement seat; A welding part, the welding part comprises a driving box, one side of the driving box is fixedly connected to the outer surface of the base, and the driving box is slidably connected to a welding head via an annular frame arranged on the outer surface of the driving box; Among them, the positioning piece includes an oblique groove opened inside the placement seat, a positioning plate is slidably connected inside the oblique groove, an anti-slip strip is fixedly connected to the outer surface of the positioning plate, the placement seat is slidably connected to the counterweight column through a displacement groove opened inside it, the oblique groove is connected to the inside of the displacement groove, a positioning groove is opened inside the positioning plate, a connecting block is fixedly connected to the circumferential outer surface of the counterweight column, and the connecting block passes through the placement seat on the side away from the counterweight column and is fixedly connected to a magnetic plate.

[0006] Furthermore, the side of the placement seat close to the magnetic plate is rotatably connected to a rotating rod via a pin shaft, the end of the rotating rod away from the pin shaft is fixedly connected to a suction plate magnetically connected to the outer surface of the magnetic plate, the upper surface of the base is fixedly connected to a support frame that fits the outer surface of the rotating rod, and the side of the drive box close to the placement seat is fixedly connected to an arc block.

[0007] Furthermore, it also includes a fixing part, the fixing part includes a connecting rod, the connecting rod is fixedly connected to a side of the annular frame away from the driving box, the outer surface of the connecting rod is fixedly connected to a cylinder, the output end of the cylinder is connected to a pressure plate for damping rotation, and a clamping mechanism is provided at one end of the connecting rod away from the driving box; Furthermore, the clamping mechanism includes a connecting block, the outer surface of which is fixedly connected to a support rod, the side of the support rod close to the connecting rod is fixedly connected to an inner clamping rod, the inner clamping rod is slidably connected to an outer clamping rod via a cavity provided inside the inner clamping rod, and a spring connected to the bottom end of the outer clamping rod is arranged inside the cavity.

[0008] Furthermore, two support rods are provided and are symmetrically distributed with the pressure plate as the center, and the inner clamping rod and the outer clamping rod are both arc-shaped.

[0009] Furthermore, the outer surface of the outer clamping rod away from the inner clamping rod is fixedly connected to an external connecting rod, the end of the external connecting rod away from the placement seat is fixedly connected to a connecting rod, the end of the connecting rod away from the external connecting rod is rotatably connected to a sliding rod that slides with the inside of the connecting block, and a fixing part is arranged inside the sliding rod.

[0010] Furthermore, the fixing member includes a pull ring, which is fixedly connected to one end of the sliding rod away from the external connecting rod. A ratchet groove is provided on the outer surface of the sliding rod, and the side of the connecting block close to the pull ring is rotatably connected to the limiting plate through a fixing seat.

[0011] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is provided with a rotating shaft, a front rod, a rear rod and a placement seat. In the initial state, the placement seat is in a horizontal state, which is conducive 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, and the placement seat is moved toward the fixed part while rotating, and the placement seat is changed from a horizontal state to a vertical state, and finally its open end is slightly inclined with the ground. In this process, the magnetism between the magnetic plate and the suction plate, as well as the state of the counterweight column and the rotating rod at different inclination angles can be used to achieve 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 conducive to saving space and facilitating loading and operation; when the placement seat rotates, the positioning plate passes through the arc block, and the external reinforcing rib plate is stably clamped under the action of the counterweight column; after rotating more than ninety degrees, under the action of the magnetic force, the counterweight column moves up, and the positioning plate is no longer fixed, and the reinforcing rib plate smoothly slides to the upper surface of the U-shaped steel and fits with it. The placement seat can be transformed from a horizontal to a vertical state by rotating the rotating shaft, and the placement and positioning of the reinforcing rib plate can be completed at the same time. The operation process is simple and fast, and the entire process does not require complicated manual adjustments or additional tools, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 It is a schematic diagram of the structure of the external U-shaped steel soft rock support frame and the reinforcing rib plate; Figure 2 It is a three-dimensional structural schematic diagram of an embodiment of the present invention; Figure 3 It is a schematic diagram of the structure of the embodiment of the present invention from multiple angles; Figure 4 It is a structural schematic diagram of a feeding part according to an embodiment of the present invention; Figure 5 It is a schematic cross-sectional structure diagram of a placement seat according to an embodiment of the present invention; Figure 6 This is a schematic structural diagram of a positioning plate, a counterweight column and a rotating rod according to an embodiment of the present invention; Figure 7 This is a schematic structural diagram of a connecting rod and a clamping mechanism according to an embodiment of the present invention; Figure 8 It is a schematic structural diagram of the inner clamping rod, the outer clamping rod and the pressure plate according to an embodiment of the present invention; Fig. 9 For the embodiment of the present invention Figure 7A schematic diagram of the structure with a partial enlargement at the center; Fig.10 It is a schematic diagram of the cross-sectional structure of the support rod, the inner clamping rod and the outer clamping rod according to an embodiment of the present invention.

[0014] The numbers in the figure represent: 1, feeding 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, suction plate; 167, support frame; 168, arc block; 2, Welding part; 21. Drive box; 22. Ring frame; 23. Welding head; 3. Fixing part; 31. Connecting rod; 32. Pressure 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. Connecting rod; 338. Sliding rod; 34. Fixing piece; 341. Ratchet groove; 342. Limiting plate. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] The present invention will be further described below in conjunction with the embodiments.

[0017] Example:

[0018] See also Figure 1-Figure 10 The present invention provides a technical solution: a temporary reinforcement welding device for soft rock support provided with a rotatable welding head, comprising: The feeding part 1 comprises a base 11, the upper surface of the base 11 is rotatably connected to a rotating shaft 12 through a connecting seat, the circumferential outer surface of the rotating shaft 12 is fixedly connected to a front rod 13 and a rear rod 14, the front rod 13 and the rear rod 14 are distributed at an angle, and the ends of the front rod 13 and the rear rod 14 away from the rotating shaft 12 are rotatably connected to a placement seat 15 through a rotating shaft seat, and a positioning member 16 that can fit with an external reinforcing rib plate is arranged on the placement seat 15; The welding part 2 includes a driving box 21, one side of which is fixedly connected to the outer surface of the base 11, and the driving box 21 is slidably connected to a welding head 23 via a ring frame 22 arranged on the outer surface thereof; Among them, the positioning member 16 includes an oblique groove opened inside the placement seat 15, a positioning plate 161 is slidably connected inside the oblique 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 the counterweight column 162 through a shifting groove opened inside it, the oblique groove is connected to the inside of the shifting 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 the 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.

[0019] A rotating rod 165 is rotatably connected to the side of the placement seat 15 close to the magnetic plate 164 through a pin shaft, and an end of the rotating rod 165 away 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 block 168 is fixedly connected to the side of the drive box 21 close to the placement seat 15.

[0020] The fixing part 3 includes a connecting rod 31, which is fixedly connected to the side of the annular frame 22 away from the driving box 21, and the outer surface of the connecting rod 31 is fixedly connected to a cylinder, and the output end of the cylinder is connected to a pressure plate 32 for damping rotation, and a clamping mechanism 33 is provided at one end of the connecting rod 31 away from the driving box 21; The clamping mechanism 33 includes a connecting block 331, the outer surface of which is fixedly connected to a support rod 332, the side of the support rod 332 close to the connecting rod 31 is fixedly connected to an inner clamping rod 333, the inner clamping rod 333 is slidably connected to an outer clamping rod 334 through a cavity provided therein, and a spring 335 connected to the bottom end of the outer clamping rod 334 is provided inside the cavity.

[0021] Two support rods 332 are provided and are symmetrically distributed with the pressure plate 32 as the center. The inner clamping rod 333 and the outer clamping rod 334 are both arc-shaped.

[0022] 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, and one end of the outer connecting rod 336 away from the placement seat 15 is fixedly connected to a connecting rod 337. The 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 part 34 is arranged inside the sliding rod 338.

[0023] The fixing member 34 includes a pull ring, which is fixedly connected to one 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. The side of the connecting block 331 close to the pull ring is rotatably connected to the limiting plate 342 through a fixing seat.

[0024] The process of stably clamping the U-shaped steel: In actual application, 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 pressure plate 32 are on the upper part of the U-shaped steel, and the side of the two inner clamping rods 333 close to the outer clamping rod 334 is in contact with the inner surface of the circumference 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 a maximum state, and the gap between the inner clamping rod 333 and the outer clamping rod 334 at the opening is greater than the thickness of the outer 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, and the two outer clamping rods 334 are respectively on the outer surface of the bottom plate arc segment and the outer surface of the side arc segment of the U-shaped steel, and 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.

[0025] Slide the drive box 21 on the slide rail a short distance away from the fixed part 3, so that both outer clamping rods 334 enter the groove body on the outer surface of the U-shaped steel, and the inner surface of the inner clamping rod 333 is close to the outer surface of the U-shaped steel. At this time, pull the pull ring outward, and the sliding rod 338 inside the connecting block 331 moves obliquely upward under the action of the pull ring, and the ratchet groove 341 opened on the upper surface of the sliding rod 338 moves with it. The limit plate 342 is rotatably connected through the fixed seat set on the outer surface of the connecting block 331. Under the action of its own gravity and the limit of the fixed seat, the bottom end of the limit plate 342 always hangs down to the side of the ratchet groove 341. When the pull ring is pulled to move the sliding rod 338 upward, the bottom end of the limit plate 342 contacts the outer surface of the sliding rod 338 and contacts the inner wall of the ratchet groove 341.

[0026] When the sliding rod 338 moves upward, the end of the sliding rod 338 away from the pull ring is rotatably connected to the connecting rod 337, and 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 upward obliquely, the outer clamping rod 334 is affected by the connecting rod 337 and moves toward the inner clamping rod 333 in the cavity. The outer clamping rod 334 that fits the arc section of the bottom plate of the U-shaped steel 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 adopts an arc design and fits tightly with the inner wall of the groove on the outer surface of the U-shaped steel. At the same time, after the clamping is stable, the limit plate 342 is finally located inside the ratchet groove 341 of this position segment and is stably engaged.

[0027] The process of placing the stiffener plate: At this time, the side arc section and the bottom plate arc section of the U-shaped steel are stably clamped by the clamping mechanism 33, and the reinforcing rib plate is placed inside the placement seat 15 through the external storage device of the reinforcing rib plate or manually. In the initial state, the rotating rod 165 is in an upward tilted state under the support of the support frame 167. The rotating rod 165 is located at a position close to the base 11 on the outer surface of the placement seat 15, and is not centrally arranged, which is conducive to the support frame 167 to support the rotating rod 165 and attract the magnetic plate 164. The attraction plate 166 at the outer end of the rotating rod 165 is attracted to the magnetic plate 164, the counterweight column 162 is located at one end of the rotating rod 165 in the displacement groove, and the positioning plate 161 is inside the inclined groove and protrudes toward the inner wall of the placement seat 15. The positioning plate 161 slides smoothly with the inner wall of the inclined groove. When the reinforcing rib plate is placed inside the placement seat 15, since the positioning plate 161 adopts an inclined design, when the reinforcing rib plate is inserted, the positioning plate 161 can be pushed from the inside of the inclined groove to the outside of the placement seat 15.

[0028] After the reinforcing rib plate is placed inside the placement seat 15, the driving box 21 drives the rotating shaft 12 to rotate inside the connection 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 are at a certain angle in the initial state. The front rod 13 and the rear rod 14 are both rotatably connected to the placement seat 15 through the rotating shaft seat. The rotating shaft seat connected to the rear rod 14 is relatively long, and the rear rod 14 adopts a two-stage 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 rotatably connected to the front and rear positions of the bottom of the placement seat 15, respectively, to drive the placement seat 15 to move. The placement seat 15 rises upward, and its bottom is separated from the upper surface of the base 11 and 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 is fitted with the arc block 168 on the outer surface of the drive box 21. Under the action of the outer surface of the arc block 168, the positioning plate 161 is driven to slide toward the inside of the placement seat 15 in accordance with the smooth inner wall of the inclined groove. At this time, the anti-slip strip 1611 on the outer surface of the positioning plate 161 is tightly fitted with the side wall of the reinforcing rib plate, and the anti-slip strip 1611 is elastically deformed under the action of the extrusion force, and the positioning groove 1612 inside the positioning plate 161 is consistent with the angle of the displacement groove.

[0029] At this time, since the placement seat 15 is in a slightly tilted state, the side of the rotating rod 165 loses the supporting function of the support frame 167 and always remains vertical to the ground. The counterweight column 162 is on the smooth inner wall of the displacement 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. The counterweight column 162 moves toward the end away from the rotating rod 165 under the influence of gravity. The counterweight column 162 slides into the positioning groove 1612 inside the bottom positioning plate 161, fixing the positioning plate 161 in 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.

[0030] As the rotating shaft 12 continues to rotate, the reinforcing rib plate in the placement seat 15 is moved toward 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 segment 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 magnetic plate 164 at the outer end through the connecting block 163 and is sucked by the suction plate 166. The counterweight column 162 slides upward, and the positioning plate 161 is no longer affected by the positioning effect of the counterweight column 162.

[0031] The reinforcing rib plate has a certain weight, which squeezes the positioning plate 161 outward inside the inclined groove. Since arc-shaped grooves are opened in advance at both ends of the reinforcing rib plate, it can fit with the arc-shaped inner surface of the U-shaped steel. After the reinforcing rib plate slides from the inside of the placement seat 15, the arc-shaped groove of the reinforcing rib plate matches 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.

[0032] The driving box 21 rotates the rotating shaft 12 in the opposite direction, driving the placement seat 15 to tilt slightly downward from the open end, transform it into a position 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 angle of 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 to the end away from the rotating rod 165 under the influence of gravity, and the counterweight column 162 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 restores to its initial state. The rotating rod 165 is supported by the support frame 167 and is in an upward tilted 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. The counterweight column 162 extends to the magnetic plate 164 at the outer end through the connecting block 163 and is sucked by the suction plate 166. The counterweight column 162 moves in the smooth displacement groove toward the side close to the rotating rod 165.

[0033] The process of welding the reinforcing rib plate to the surface of the U-shaped steel soft rock support frame: After the rib plate is placed, start the cylinder to squeeze the pressure plate 32 downward. The pressure plate 32 is connected to the outer end of the cylinder for damping rotation. The rotation angle can be set in advance according to the placement position of the welded rib plate. The surface of the pressure plate 32 away from the cylinder is fixedly connected to the outer surface of the rib plate, and the rib plate is stably squeezed in this position and remains stationary. Start the welding head 23, and the welding head 23 switches the rotation position through the annular frame 22. The welding head 23 itself can rotate an angle, and the rib plate can be firmly welded to the soft rock support. No manual support is required during this process, which improves safety performance.

[0034] After welding is completed, the pressure plate 32 is retracted by the cylinder, and the pull ring is slightly pulled to make the sliding rod 338 move slightly away from the pressure plate 32. The limit plate 342 and the ratchet groove 341 are no longer tightly fitted. By pressing the upper end of the limit plate 342, it is parallel to the sliding rod 338. At this time, the spring 335 inside the cavity loses its squeezing effect. Under the action of its tension, the outer clamping rod 334 is bounced outward, and the distance between the outer clamping rod 334 and the inner clamping rod 333 is restored to the initial state. 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 toward the side close to the fixed part 3, so that the clamping mechanism 33 is completely separated from the fixation of the soft rock support.

[0035] In summary, there are several advantages in welding the stiffener plate to the soft rock support: Advantage 1: The front rod 13 and the rear rod 14 are driven to rotate by the rotating shaft 12, and the placement seat 15 is changed from an initial horizontal state to a state perpendicular to the ground, and then slightly inclined to the ground, and the reinforcing rib plate with an arc groove is placed on the upper surface of the U-shaped steel bracket, thereby realizing mechanized operation and reducing the complexity of manual operation.

[0036] Advantage two, utilizes the magnetism between magnetic plate 164 and suction plate 166, and the state of counterweight column 162 and rotating rod 165 at different tilt angles, to realize that in initial state, counterweight column 162 does not position positioning plate 161, and reinforcing rib plate is conveniently placed inside placement seat 15, after tilting, positioning plate 161 is squeezed inward by arc block 168, gravity of counterweight column 162 and rotating rod 165 is greater than magnetism between magnetic plate 164 and suction plate 166, counterweight column 162 slides down, and positioning plate 161 is stabilized in this position. When unloading, the placement 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 upward, and the positioning plate 161 loses its positioning function. The reinforcing rib plate slides downward to the upper surface of the U-shaped steel bracket under its own action, and the clamping force required for different steps is smoothly achieved. The automatic positioning and release functions are realized by using magnetism, gravity and mechanical principles, which reduces manual intervention and improves the level of automation.

[0037] Advantage three: two support rods 332, inner clamp rod 333 and outer clamp rod 334 are symmetrically distributed around the pressure plate 32, and a certain angle is formed between the two inner clamp rods 333 and the outer clamp rod 334, which can meet the clamping action for the arc section of the bottom plate and the arc sections on both sides of the U-shaped steel. The inner clamp rod 333 and the outer clamp rod 334 are both designed in an arc shape that fits the outer surface of the U-shaped steel, which can clamp the two U-shaped steels more stably and ensure stability during welding.

[0038] Advantage four: by pulling the pull ring outward, the outer clamp rod 334 can be pulled toward the inner clamp rod 333, and the limit plate 342 in the fixing member 34 is engaged with the ratchet groove 341 on the outer surface of the sliding rod 338, so that the outer surfaces of the outer clamp rod 334 and the inner clamp rod 333 are both in contact with the U-shaped steel, which can meet the clamping needs of U-shaped steels of different thicknesses, has strong adaptability, and improves overall flexibility.

[0039] Advantage 5: After the device places the reinforcing rib plate steadily, the cylinder is started to squeeze the reinforcing rib plate between the two ends of the U-shaped steel through the pressure plate 32. No manual support is required during the welding process, which improves the safety performance. The welding head 23 is slidably connected through the annular frame 22 to meet the welding requirements of different angles, with high flexibility. At the same time, in addition to welding the reinforcing rib plate, it can also be directly used as a connection between two U-shaped steel soft rock supports with an inclined angle through the clamping mechanism 33.

[0040] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, 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 piece (16) that can fit with an external reinforcing rib plate; A welding portion (2), the welding portion (2) comprising a drive box (21), one side of the drive box (21) being fixedly connected to the outer surface of the base (11), and the drive box (21) being slidably connected to a welding head (23) via an annular frame (22) arranged on the outer surface of the drive box (21); 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).

2. A temporary reinforcement welding device for soft rock support with a rotatable welding head according to claim 1, characterized in that: A side of the placement seat (15) close to the magnetic plate (164) is rotatably connected to a rotating rod (165) via a pin shaft, an 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), an upper surface of the base (11) is fixedly connected to a support frame (167) in contact with the outer surface of the rotating rod (165), and a side of the drive box (21) close to the placement seat (15) is fixedly connected to an arc block (168).

3. The temporary reinforcement welding device for soft rock support provided with a rotatable welding head according to claim 1, characterized in that: The device further comprises a fixing portion (3), the fixing portion (3) comprising a connecting rod (31), the connecting rod (31) being fixedly connected to a side of the annular frame (22) away from the drive box (21), the outer surface of the connecting rod (31) being fixedly connected to a cylinder, the output end of the cylinder being rotationally damped and connected to a pressure plate (32), and the end of the connecting rod (31) away from the drive box (21) being provided with a clamping mechanism (33).

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

5. A temporary reinforcement welding device for soft rock support with a rotatable welding head according to claim 4, 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 to be arc-shaped.

6. A temporary reinforcement welding device for soft rock support with a rotatable welding head according to claim 5, 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 fixedly 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).

7. A temporary reinforcement welding device for soft rock support with a rotatable welding head according to claim 6, 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), a ratchet groove (341) is provided on the outer surface of the sliding rod (338), and a side of the connecting block (331) close to the pull ring is rotatably connected to a limiting plate (342) via a fixing seat.

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