Auxiliary welding device for mine hydraulic support

Abstract

The invention provides an auxiliary welding device for a mine hydraulic support, and relates to the technical field of auxiliary welding devices. The device comprises: a support; the fixing frame is fixedly connected to the support, and a sliding groove is formed in the fixing frame; and the two limiting blocks are symmetrically distributed and detachably connected to the fixing frame, the opposite sides of the two limiting blocks are connected with a plurality of moving blocks in a limiting and sliding mode, the moving blocks are fixedly connected with first hydraulic telescopic rods, and the telescopic ends of the two adjacent first hydraulic telescopic rods on different limiting blocks are jointly and rotationally connected with extrusion rollers. The arc-shaped part of the arc-shaped plate is continuously extruded and fixed through the uniformly distributed extrusion rollers in the welding process, so that the arc-shaped plate is uniformly stressed in the welding process, the local thermal stress of the arc-shaped plate is dispersed to the whole, the local stress concentration of the arc-shaped plate is reduced, and the welding quality of the arc-shaped plate is improved. And the quality and the position accuracy of a welding seam between the arc-shaped plate and the rib plate are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of welding auxiliary devices, and particularly relates to a welding auxiliary device for a mine hydraulic support. Background Art

[0002] Hydraulic supports are important equipment used in mine exploitation to support the roof of mine roadways and ensure the safety of the working face, and are widely used in the coal mining field. It provides a stable working environment for equipment such as coal shearers and conveyors, and ensures the personal safety of workers. In order to increase the overall stability and load-bearing capacity of the hydraulic support, its roof beam is usually designed to be arc-shaped to improve the stiffness of the roof beam and reduce the degree of deformation of the roof beam during use. To further enhance the rigidity and compressive performance of the roof beam, stiffeners are usually welded to the roof beam.

[0003] Currently, during the process of welding the stiffeners to the arc-shaped plate, spot welding is usually first performed on the stiffeners and the arc-shaped metal plate to ensure the relative position between the two, and only fixtures are used to maintain the relative position of the arc-shaped metal plate and the stiffeners during the subsequent welding process. However, during the welding process of the arc-shaped metal plate, the heat generated will cause uneven local heating of the arc-shaped metal plate, resulting in local thermal stress concentration, thereby causing deformation of the arc-shaped metal plate in this part, leading to relative movement between the arc-shaped metal plate and the stiffeners, affecting the quality of the weld seam and the accuracy of the position, and even causing separation of the welding points of the arc-shaped metal plate and the stiffeners after welding due to the release of internal stress, and affecting the durability and safety of the overall structure. Summary of the Invention

[0004] In order to overcome the disadvantages mentioned in the above background art, the present invention provides a welding auxiliary device for a mine hydraulic support.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A welding auxiliary device for a mine hydraulic support, comprising:

[0007] A support;

[0008] A fixing frame, fixedly connected to the support, and a chute is provided on the fixing frame;

[0009] An electric push rod, installed on the fixing frame, and an extrusion plate is fixedly connected to the telescopic end of the electric push rod;

[0010] The limiting blocks, there are two with symmetric distribution, both are detachably connected to the fixing frame. The limiting blocks are composed of an arc portion and a horizontal portion. A plurality of moving blocks are slidably connected to the opposite sides of the two limiting blocks. The moving blocks are fixedly connected with first hydraulic telescopic rods. The telescopic ends of two adjacent first hydraulic telescopic rods on different limiting blocks are jointly rotatably connected with a pressing roller, and the pressing roller slides in the chute of the fixing frame;

[0011] The driving components, there are two with symmetric distribution, are respectively arranged on adjacent limiting blocks, and the driving components are used to drive all the moving blocks on the adjacent limiting blocks to move.

[0012] More preferably, the driving component includes:

[0013] A driving motor, installed on the adjacent limiting block, the output shaft of the driving motor is fixedly connected with a winding rod, and the winding rod is rotatably connected with the adjacent limiting block;

[0014] A traction rope, wound around the winding rod, the traction rope is fixedly connected with the moving block on the adjacent limiting block close to the driving motor, and a first elastic member is fixedly connected between two adjacent moving blocks on the same limiting block;

[0015] A second elastic member is fixedly connected between the moving block far from the traction rope and the limiting block.

[0016] More preferably, the opposite sides of two adjacent moving blocks on different limiting blocks are both fixedly connected with a first connecting rod and a second connecting rod. The limiting block is provided with a first limiting groove and a second limiting groove. Both the first limiting groove and the second limiting groove are composed of a horizontal portion and an arc portion. The first connecting rod slides in the adjacent first limiting groove, and the second connecting rod slides in the adjacent second limiting groove.

[0017] More preferably, the centers of the circles where the arc portions of the first limiting groove and the second limiting groove are located coincide, and the angles of the corresponding central angles of the arc portions and the lengths of the horizontal portions are the same.

[0018] More preferably, the second limiting groove is provided with multi-stage stepped portions, and the distance between two adjacent stepped portions on the two symmetrically distributed second limiting grooves decreases as the distance between the stepped portion and the adjacent driving motor increases.

[0019] More preferably, the lengths of all the second connecting rods on the same limiting block increase as the distance between the second connecting rod and the driving motor increases, and the multi-stage stepped portions of the second limiting groove are used to respectively limit the second connecting rods with different lengths.

[0020] More preferably, it further includes:

[0021] An installation block is connected to the bracket in a limited sliding manner, and a driving module for driving the installation block to move is arranged on the bracket;

[0022] A second hydraulic telescopic rod is fixedly connected to the installation block;

[0023] A first electric rotating shaft is arranged at the telescopic end of the second hydraulic telescopic rod;

[0024] An installation plate is fixedly connected to the first electric rotating shaft;

[0025] There are two clamping plates symmetrically distributed, and both are connected to the installation plate in a limited sliding manner;

[0026] A second electric rotating shaft is arranged on the adjacent installation plate. The second electric rotating shaft is provided with an external thread, and the clamping plate is threadedly connected to the external thread on the second electric rotating shaft.

[0027] More preferably, an L-shaped plate is fixedly connected to the upper side of the clamping plate for limiting the workpiece to be processed.

[0028] More preferably, it further includes:

[0029] There are two support plates symmetrically distributed, which are respectively arranged on the opposite sides of the two installation plates. A fixing component is arranged between the support plate and the adjacent clamping plate, and the fixing component is used to change the included angle between the support plate and the adjacent installation plate.

[0030] More preferably, the fixing component includes:

[0031] An arc-shaped rod is slidably connected to the adjacent support plate in a penetrating manner and is fixedly connected to the adjacent clamping plate. An arc-shaped rack is arranged on the arc-shaped rod;

[0032] A self-locking motor is arranged on the support plate, and a gear meshing with the arc-shaped rack is fixedly connected to the output shaft of the self-locking motor;

[0033] A fourth hydraulic telescopic rod is ball-jointed between the adjacent installation plate and the adjacent support plate.

[0034] The beneficial technical effect of the present invention is:

[0035] In the present invention, during the welding process, the arc-shaped part of the arc-shaped plate is continuously squeezed and fixed by uniformly distributed extrusion rollers, so that the arc-shaped plate is uniformly stressed during the welding process, the thermal stress locally received by the arc-shaped plate is dispersed to the whole, the stress concentration at the local part of the arc-shaped plate is reduced, and at the same time, the internal stress remaining after the welding of the arc-shaped plate and the rib plate is reduced, ensuring the quality and accurate position of the weld between the arc-shaped plate and the rib plate.

[0036] The moving block is limited by the first limiting groove and the adjacent second limiting groove to ensure the stability of the position of the moving block, avoid the deviation of the moving block from the established path during the movement, and ensure that the pressing rollers are finally evenly distributed on the arc part of the arc plate, so as to ensure uniform force on the arc part of the arc plate.

[0037] During the welding process, the two symmetrically distributed clamping plates and the symmetrically distributed supporting plates jointly position the rib plate to avoid the bending or deformation of the rib plate due to stress and thermal expansion and contraction during the welding process. Brief Description of the Drawings

[0038] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0039] Figure 2 is a three-dimensional structural schematic diagram of the fixing frame and the limiting block of the present invention;

[0040] Figure 3 is a three-dimensional structural schematic diagram of the fixing frame and the pressing roller of the present invention;

[0041] Figure 4 is a three-dimensional structural schematic diagram of the driving motor and the winding roller of the present invention;

[0042] Figure 5 is a three-dimensional structural schematic diagram of the first elastic member and the second elastic member of the present invention;

[0043] Figure 6 is a three-dimensional structural schematic diagram of the first connecting rod and the second connecting rod of the present invention;

[0044] Figure 7 is a three-dimensional structural schematic diagram of the mounting plate and the clamping plate of the present invention;

[0045] Figure 8 is a three-dimensional structural schematic diagram of the supporting plate and the arc rod of the present invention;

[0046] Figure 9 is a three-dimensional structural schematic diagram of the connecting seat and the pin of the present invention.

[0047] Description of the Reference Numerals:

[0048] 100: Intelligent welding machine, 1: Bracket, 2: Fixed frame, 201: Electric push rod, 3: Limit block, 4: Moving block, 5: First hydraulic telescopic rod, 6: Squeezing roller, 7: Driving motor, 8: Winding roller, 9: Traction rope, 10: First elastic member, 11: Second elastic member, 111: First connecting rod, 112: Second connecting rod, 113: First limit groove, 114: Second limit groove, 12: Mounting block, 13: Second hydraulic telescopic rod, 131: First electric rotating shaft, 14: Mounting plate, 15: Clamping plate, 16: Second electric rotating shaft, 17: Support plate, 19: Arc-shaped rod, 20: Arc-shaped rack, 21: Self-locking motor, 24: Fourth hydraulic telescopic rod. Detailed implementation mode

[0049] To make the objectives, technical solutions and beneficial effects of the present invention clearer and more understandable, the following further elaborates on the present invention in detail with reference to specific embodiments and the accompanying drawings. Some but not all embodiments of the present invention will be described more comprehensively with reference to the attached drawings later. In fact, various embodiments of the present invention can be implemented in many different forms and should not be construed as limited to the embodiments described herein; on the contrary, these embodiments are provided to enable the present invention to meet the applicable legal requirements.

[0050] In the description of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "inner", "outer", "upper", "lower", "front", "rear", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0051] Embodiment 1: A welding assistance device for a mining hydraulic support, as Figures 1-5 shown, includes: a bracket 1; a fixed frame 2 fixedly connected to the bracket 1, with a chute provided on the fixed frame 2; an electric push rod 201 installed on the fixed frame 2, and the telescopic end of the electric push rod 201 is fixedly connected with a pressing plate; limit blocks 3, having two symmetrically distributed ones, both detachably connected to the fixed frame 2, the limit blocks 3 are composed of an arc-shaped part and a horizontal part, and a plurality of moving blocks 4 are slidably connected to the opposite sides of the two limit blocks 3 in a limited manner; the moving blocks 4 are fixedly connected with first hydraulic telescopic rods 5, and the telescopic ends of two adjacent first hydraulic telescopic rods 5 on different limit blocks 3 are jointly rotatably connected with a squeezing roller 6, and the squeezing roller 6 slides in the chute of the fixed frame 2; driving components, having two symmetrically distributed ones, respectively arranged on adjacent limit blocks 3, and the driving components are used to drive all the moving blocks 4 on the adjacent limit blocks 3 to move.

[0052] In the above solution, an intelligent welding machine 100 for welding the arc-shaped metal plate and the rib plate is arranged on the front side of the fixing frame 2. The fixing frame 2 is used to place the arc-shaped metal plate to be welded, and a step portion for positioning the arc-shaped metal plate is arranged on the upper side of the fixing frame 2; the two limiting blocks 3 are symmetrically distributed front and back; the specific number of moving blocks 4 on each limiting block 3 is selected by the staff according to the actual situation. In the figure and in the text, five horizontally arranged ones are taken as examples for illustration. For the convenience of understanding, the five moving blocks 4 on the front side will be edited as the first group later, and the five moving blocks 4 on the back side will be edited as the second group; each first hydraulic expansion rod 5 is communicated with an external hydraulic system, and the volume of hydraulic oil in the fixing portion of the first hydraulic expansion rod 5 can be controlled by the external hydraulic system. Initially, the telescopic end of the first hydraulic expansion rod 5 is in the extended state.

[0053] Further, as Figures 3-5 shown, the driving assembly includes: a driving motor 7, installed on the adjacent limiting block 3, the output shaft of the driving motor 7 is fixedly connected with a winding rod 8, and the winding rod 8 is rotatably connected with the adjacent limiting block 3; a traction rope 9, wound around the winding rod 8, the traction rope 9 is fixedly connected with the moving block 4 on the adjacent limiting block 3 close to the driving motor 7, and a first elastic member 10 is fixedly connected between two adjacent moving blocks 4 on the same limiting block 3; a second elastic member 11 is fixedly connected between the moving block 4 far from the traction rope 9 and the limiting block 3.

[0054] In the above solution, the driving motor 7 is located on the upper side of the left part of the adjacent limiting block 3; the traction rope 9 is fixedly connected with the leftmost moving block 4; both the first elastic member 10 and the second elastic member 11 are tension springs, and the elastic coefficient of the second elastic member 11 is smaller than that of the first elastic member 10.

[0055] The working process of the above solution is as follows:

[0056] When the arc-shaped metal plate (hereinafter referred to as the arc plate) needs to be welded to the rib plate by using this device, the staff uses the existing feeding device to move the arc plate onto the fixing frame 2 and move the right side of the arc plate to the position where it contacts the step portion on the fixing frame 2. The fixing frame 2 positions the arc plate. At this time, the arc plate is located between the fixing frame 2 and the two limiting blocks 3, and the intersection of the arc portion and the horizontal portion of the arc plate and the intersection of the arc portion and the horizontal portion of the limiting block 3 are on the same vertical line.

[0057] After the arc plate is installed, the staff starts the two driving motors 7. The following takes the movement process of the five moving blocks 4 on the front side as an example for description:

[0058] The output shaft of the driving motor 7 drives the winding roller 8 to rotate. The winding roller 8 winds the traction rope 9 thereon, so that the traction rope 9 drives the leftmost moving block 4 to move leftward, and the leftmost moving block 4 drives the other four moving blocks 4 to move leftward synchronously through the transmission of the four first elastic members 10, so that the five moving blocks 4 move from the horizontal part of the limiting block 3 to its arc part. At the same time, the rightmost moving block 4 stretches the second elastic member 11 during the movement until the second elastic member 11 is stretched to the limit position. Then, the rightmost moving block 4 moves to the junction of the arc part and the horizontal part of the limiting block 3. At this time, the leftmost moving block 4 can still move along the arc part of the limiting block 3. During the subsequent movement of the leftmost moving block 4, the four first elastic members 10 start to be stretched synchronously, so that the increase in the distance between adjacent two pressing rollers 6 is the same. Until the leftmost moving block 4 moves to the limit position, that is, when the leftmost moving block 4 moves to the uppermost side of the arc part of the limiting block 3, the four first elastic members 10 are all stretched to the limit state. At this time, the five pressing rollers 6 are equidistantly distributed on the arc part of the arc plate. Then the staff shuts down the two driving motors 7.

[0059] During the movement of the five moving blocks 4 on the front and back sides, the two adjacent moving blocks 4 drive the pressing roller 6 therebetween to move synchronously along the sliding groove of the fixing frame 2. When the leftmost two moving blocks 4 respectively move to the junction of the arc part and the horizontal part of the adjacent limiting block 3, the leftmost pressing roller 6 moves out of the sliding groove of the fixing frame 2. Then the staff controls the external hydraulic system to extract the hydraulic oil from the fixed parts of the leftmost two first hydraulic telescopic rods 5, so that the telescopic ends of the leftmost two first hydraulic telescopic rods 5 contract, and the leftmost pressing roller 6 moves synchronously with the telescopic ends of the leftmost two first hydraulic telescopic rods 5. The pressing roller 6 presses the lower side surface (the arc part of the arc plate) of the arc plate, so that the arc part of the arc plate closely adheres to the lower side of the arc part of the limiting block 3. During this process, the two driving motors 7 respectively drive the two winding rollers 8 to rotate continuously, and then drive all the moving blocks 4 to continue to move, so that the five pressing rollers 6 press the arc part of the arc plate in sequence from left to right, eliminating the negative impact on the subsequent welding caused by the springback of the bent metal plate, ensuring the bending shape of the arc part of the arc plate, making the bending radian of the arc part of the arc plate more standard, and then ensuring the fit between the arc part of the arc plate and the rib plate, increasing the connection tightness between the two, thereby improving the overall structural strength after welding. The movement processes of the subsequent four pressing rollers 6 are the same as that of the leftmost pressing roller 6.

[0060] After the above-mentioned shutdown of the two drive motors 7, the staff uses the existing transport device to move the rib plates to be welded onto the arc plate, and uses the intelligent welding machine 100 to weld the rib plates onto the arc plate. During the welding process, the five pressing rollers 6 continuously press and fix the arc plate, so that the arc plate is evenly stressed during welding, dispersing the thermal stress on the local part of the arc plate to the whole of the arc plate, reducing the local stress concentration of the arc plate, and at the same time reducing the residual internal stress between the arc plate and the rib plate after welding, avoiding the situation that the weld between the two splits due to the release of the residual internal stress after welding, ensuring the quality and accurate position of the weld between the arc plate and the rib plate. After the welding is completed, the staff starts the electric push rod 201, and the telescopic end of the electric push rod 201 drives the pressing plate thereon to move leftward, pushing the welded arc plate leftward, separating the arc plate from the fixed frame 2, and moving the next metal plate to be welded to the welding position.

[0061] Further, as Figure 5 and Figure 6 shown, on the relative sides of two adjacent moving blocks 4 on different limit blocks 3, a first connecting rod 111 and a second connecting rod 112 are fixedly connected respectively. The limit block 3 is provided with a first limit groove 113 and a second limit groove 114. Both the first limit groove 113 and the second limit groove 114 are composed of a horizontal part and an arc part. The first connecting rod 111 slides in the adjacent first limit groove 113, and the second connecting rod 112 slides in the adjacent second limit groove 114; the centers of the circles where the arc parts of the first limit groove 113 and the second limit groove 114 are located coincide, and the angles of the corresponding central angles of their arc parts and the lengths of the horizontal parts are the same.

[0062] In the above solution, the first limit groove 113 is located above the adjacent second limit groove 114; initially, the first connecting rod 111 and the second connecting rod 112 are respectively located in the horizontal parts of the adjacent first limit groove 113 and the second limit groove 114; during the movement of the leftmost moving block 4 on the front side above, the moving block 4 drives the first connecting rod 111 and the second connecting rod 112 thereon to move synchronously along the adjacent first limit groove 113 and the adjacent second limit groove 114 respectively. The first limit groove 113 and the adjacent second limit groove 114 jointly limit the moving block 4 to ensure the stability of the position of the moving block 4 and avoid the situation that the moving block 4 deviates from the established path during movement, ensuring that the five pressing rollers 6 can finally be evenly distributed along the arc part of the arc plate.

[0063] Further, as Figure 5 and Figure 6 shown, the second limit groove 114 is provided with multi-level stepped parts, and the distance between two adjacent stepped parts on the symmetrically distributed two second limit grooves 114 decreases as the distance between the stepped part and the adjacent drive motor 7 increases.

[0064] In the above solution, the specific shape of the second limiting groove 114 is defined. The stepped portion on the second limiting groove 114 is a six-level stepped portion. For the convenience of understanding, the six-level stepped portion is sequentially edited as the first stepped portion to the sixth stepped portion from left to right. Among them, the sixth stepped portion is located on the horizontal portion of the limiting block 3, and the first to fifth stepped portions are all located on the arc portion of the limiting block 3.

[0065] As Figure 6 shown, the lengths of all the second connecting rods 112 on the same limiting block 3 increase as the distance between the second connecting rod 112 and the driving motor 7 increases. The multi-level stepped portion of the second limiting groove 114 is used to limit the second connecting rods 112 of different lengths respectively.

[0066] In the above solution, the specific shapes of the five second connecting rods 112 on the same limiting block 3 are defined. For the convenience of understanding, the five second connecting rods 112 on the same limiting block 3 are sequentially edited as ① the second connecting rod 112, ② the second connecting rod 112 to ⑤ the second connecting rod 112 from left to right, and the lengths of ① the second connecting rod 112 to ⑤ the second connecting rod 112 increase in sequence. Initially, ⑤ the second connecting rod 112 slides on the sixth stepped portion of the adjacent second limiting groove 114.

[0067] The working process of the above solution is as follows:

[0068] During the process of the traction rope 9 driving the moving block 4 to move above, the moving process of the five front-side moving blocks 4 below is described as an example:

[0069] When the above second elastic member 11 is stretched to the limit position, the rightmost moving block 4 moves to the junction of the arc portion and the vertical portion of the limiting block 3, and ⑤ the second connecting rod 112 moves to the junction of the sixth step and the fifth step, that is, ⑤ the second connecting rod 112 is intercepted by the fifth step and cannot move any further. The process of the subsequent four second connecting rods 112 stopping moving is the same as the process of ⑤ the second connecting rod 112 stopping moving, ensuring that the five moving blocks 4 can be evenly distributed on the arc portion of the same limiting block 3, thereby further ensuring that the five pressing rollers 6 are evenly distributed on the arc portion of the arc plate.

[0070] Embodiment 2: On the basis of Embodiment 1, as Figure 2 、 Figure 3 Figure 7 and Figure 8As shown in the figure, it further includes: a mounting block 12, which is connected to the bracket 1 in a limited sliding manner, and a driving module for driving the mounting block 12 to move is arranged on the bracket 1; a second hydraulic telescopic rod 13, which is fixedly connected to the mounting block 12; a first electric rotating shaft 131, which is arranged at the telescopic end of the second hydraulic telescopic rod 13; a mounting plate 14, which is fixedly connected to the first electric rotating shaft 131; two clamping plates 15, which are symmetrically distributed, and are both connected to the lower side of the mounting plate 14 in a limited sliding manner; a second electric rotating shaft 16, which is arranged on the mounting plate 14, the second electric rotating shaft 16 is provided with an external thread, and the clamping plate 15 is threadedly connected to the external thread on the second electric rotating shaft 16; two supporting plates 17, which are symmetrically distributed, are respectively arranged on the opposite sides of the two mounting plates 14, the supporting plate 17 is composed of a horizontal part and an arc part, and a fixing component is arranged between the supporting plate 17 and the adjacent mounting plate 14, and the fixing component is used to change the included angle between the supporting plate 17 and the adjacent mounting plate 14.

[0071] In the above solution, the existing feeding device is replaced by the above-mentioned parts and components; the driving module is an existing device, and in the figure, a motor and a threaded rod are taken as examples for description. Among them, the motor is fixedly connected to the bracket 1, the threaded rod is rotatably connected to the bracket 1, and the threaded rod is fixedly connected to the output shaft of the motor (as Figure 1 shown), and is used to drive the mounting block 12 to move left and right; the fixed part of the second hydraulic telescopic rod 13 is communicated with an external hydraulic system; the two clamping plates 15 are symmetrically distributed front and back; the external threads on the second electric rotating shaft 16 are two sections symmetrically distributed front and back, and the two clamping plates 15 are respectively threadedly connected to an adjacent section of the external thread on the second electric rotating shaft 16. The two clamping plates 15 are used to clamp the rib plate to be welded, and both of the two clamping plates 15 are provided with arc parts; the two supporting plates 17 are also symmetrically distributed front and back, and the bending radian and radius of the arc part of the supporting plate 17 are the same as those of the arc part of the limiting block 3, and there is a distance between the supporting plate 17 and the adjacent clamping plate 15.

[0072] As Figure 7 shown, at least one L-shaped plate is fixedly connected to the upper side of the clamping plate 15, which is used to limit the upper side of the rib plate, so that the rib plate cannot move upward under the extrusion of the arc plate during the movement, and ensure that the lower side surface of the rib plate can be closely attached to the upper side surface of the arc plate.

[0073] The working process of the above solution is as follows:

[0074] When it is necessary to transport the rib plate, the staff first use the existing conveying device to move the required rib plate to the right side of the clamping plate 15. Then the staff start the driving module, and the driving module drives the mounting block 12, the second hydraulic telescopic rod 13, the first electric rotating shaft 131, the mounting plate 14 and other parts connected thereto to move to the extreme right position. Then the staff control the telescopic end of the second hydraulic telescopic rod 13 through an external hydraulic system to drive other parts connected thereto to move downward. After the two clamping plates 15 move downward until the L-shaped plates on them contact the upper side of the rib plate, the staff start the second electric rotating shaft 16. The second electric rotating shaft 16 drives the two clamping plates 15 to approach each other through the external threads thereon, and the two clamping plates 15 clamp and fix the rib plate.

[0075] After the rib plate is fixed, the staff turn off the second electric rotating shaft 16, and move the fixed rib plate to the welding position through the external hydraulic system and the driving module, that is, move the rib plate onto the arc plate. At this time, the lower sides of the two support plates 17 are both in contact with the upper side of the arc plate. Then use the intelligent welding machine 100 to weld the rib plate on the arc plate. During the welding process, the two clamping plates 15 and the two support plates 17 jointly position the rib plate to prevent the rib plate from bending or deforming due to stress and thermal expansion and contraction during the welding process.

[0076] After the welding is completed, the staff control the above-mentioned second electric rotating shaft 16 to separate the two clamping plates 15 from each other, release the clamping of the rib plate, and in the subsequent process, control the two clamping plates 15 to continue to transfer and fix the rib plate.

[0077] Further, as Figures 7-9 shown, the fixing component includes: an arc rod 19, which is slidably connected through adjacent support plates 17 and is fixedly connected to the adjacent clamping plate 15. An arc rack 20 is arranged on the arc rod 19; a self-locking motor 21 is arranged on the support plate 17, and the output shaft of the self-locking motor 21 is fixedly connected with a gear meshing with the arc rack 20; a fourth hydraulic telescopic rod 24 is ball-jointed between the adjacent mounting plate 14 and the adjacent support plate 17.

[0078] In the above solution, the arc rod 19 is located on the right side of the adjacent support plate 17, and the center of the arc rod 19 is located on the intersection line of the horizontal lower side extension surface of the adjacent support plate 17 and the extension surface of the adjacent clamping plate 15 away from the adjacent arc rod 19; the fixed part of the fourth hydraulic telescopic rod 24 is communicated with the external hydraulic system.

[0079] The working process of the above solution is as follows:

[0080] During the process of welding the rib plate to the arc plate above, the welding angles of some rib plates are not right angles. Therefore, before transporting the rib plates, the staff needs to adjust the positions of the two support plates 17 according to the specified inclination angle of the rib plates. The following takes the adjustment process of the front support plate 17 when the rib plate needs to tilt forward as an example for description:

[0081] The staff will start the self-locking motor 21. The output shaft of the self-locking motor 21 meshes with the arc rack through the gear on it, so that the self-locking motor 21 drives the support plate 17 to move along the arc rod 19, that is, the support plate 17 rotates clockwise ( Figure 8 viewed from left to right in the figure), reducing the included angle between the support plate 17 and the clamping plate 15. At the same time, the staff controls the external hydraulic system and selects how to change the position of the telescopic end of the fourth hydraulic telescopic rod 24 according to the change in the distance between the support plate 17 and the clamping plate 15, so that the overall length of the fourth hydraulic telescopic rod 24 can adapt to the change in the distance between the support plate 17 and the clamping plate 15.

[0082] After adjusting the included angle between the support plate 17 and the clamping plate 15, the staff shuts down the self-locking motor 21 and fixes the support plate 17 at this position. At the same time, the staff controls the external hydraulic system to fix the telescopic end of the fourth hydraulic telescopic rod 24 at this position.

[0083] After adjusting the position of the front support plate 17, the staff changes the position of the rear support plate 17 according to the above operation, and the rotation direction of the rear support plate 17 is opposite to that of the front support plate 17. After adjusting the positions of the two support plates 17 (at this time, the horizontal parts of the two support plates 17 are still on the same horizontal plane), the staff continues to clamp the rib plate according to the above operation. After clamping the rib plate, the staff controls the first electric rotating shaft 131 to drive the mounting plate 14 to rotate, so as to rotate the rib plate to the mounting angle, and weld the rib plate to the arc plate according to the above operation.

[0084] So far, this embodiment has been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the welding auxiliary device for the mining hydraulic support of the present invention. Of course, the above specific embodiments further elaborate on the purpose, technical solution and beneficial effects of the present invention. It should be understood that the above is only the specific embodiments of the present invention and does not limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A welding auxiliary device for a mine hydraulic support, characterized in that: Included are: Bracket (1); A fixing frame (2) is fixedly connected to the bracket (1), and a sliding groove is provided on the fixing frame (2); An electric push rod (201) is mounted on the fixing frame (2), and a telescopic end of the electric push rod (201) is fixedly connected to an extrusion plate; The limit blocks (3) are symmetrically distributed and both can be detachably connected to the fixed frame (2). The limit blocks (3) are composed of an arc-shaped portion and a horizontal portion. The opposite sides of the two limit blocks (3) are both limitedly and slidably connected to a plurality of moving blocks (4). The moving blocks (4) are fixedly connected to a first hydraulic telescopic rod (5). The telescopic ends of two adjacent first hydraulic telescopic rods (5) on different limit blocks (3) are rotatably connected to a squeezing roller (6). The squeezing roller (6) slides in a slide groove of the fixed frame (2). The driving components include two symmetrically distributed components, which are respectively arranged on adjacent limiting blocks (3), and the driving components are used to drive all the moving blocks (4) on the adjacent limiting blocks (3) to move.

2. A welding auxiliary device for a mine hydraulic support according to claim 1, characterized in that: The drive assembly comprises: A driving motor (7) is mounted on the adjacent limiting block (3); an output shaft of the driving motor (7) is fixedly connected with a winding roller (8), and the winding roller (8) is rotatably connected to the adjacent limiting block (3); A traction rope (9) is wound around the winding roller (8), the traction rope (9) is fixedly connected to the moving block (4) on the adjacent limiting block (3) close to the driving motor (7), and a first elastic member (10) is fixedly connected between two adjacent moving blocks (4) on the same limiting block (3); The second elastic member (11) is fixedly connected between the moving block (4) away from the traction rope (9) and the limiting block (3).

3. A welding auxiliary device for a mine hydraulic support according to claim 2, characterized in that: The opposite sides of two adjacent moving blocks (4) on different limiting blocks (3) are fixedly connected with a first connecting rod (111) and a second connecting rod (112); the limiting block (3) is provided with a first limiting groove (113) and a second limiting groove (114); the first limiting groove (113) and the second limiting groove (114) are both composed of a horizontal portion and an arc portion; the first connecting rod (111) slides in the adjacent first limiting groove (113); and the second connecting rod (112) slides in the adjacent second limiting groove (114).

4. A welding auxiliary device for a mine hydraulic support according to claim 3, characterized in that: The centers of the circles where the arc-shaped portions of the first limiting groove (113) and the second limiting groove (114) are located coincide with each other, and the angles of the corresponding central angles of the arc-shaped portions of the two limiting grooves and the lengths of the horizontal portions are the same.

5. The welding auxiliary device for a mine hydraulic support according to claim 3, characterized in that: The second limiting groove (114) is provided with a plurality of stepped portions, and the distance between two adjacent stepped portions on two symmetrically distributed second limiting grooves (114) decreases as the distance between the stepped portion and the adjacent drive motor (7) increases.

6. The welding auxiliary device for a mine hydraulic support according to claim 3, characterized in that: The lengths of all the second connecting rods (112) on the same limiting block (3) increase as the distance between the second connecting rod (112) and the drive motor (7) increases, and the multi-stepped portions of the second limiting groove (114) are used to limit the second connecting rods (112) of different lengths respectively.

7. The welding auxiliary device for a mine hydraulic support according to claim 1, characterized in that: Also includes: A mounting block (12) is connected to the bracket (1) in a limited sliding manner, and the bracket (1) is provided with a driving module for driving the mounting block (12) to move; A second hydraulic telescopic rod (13) fixedly connected to the mounting block (12); A first electric rotating shaft (131) is arranged at the telescopic end of the second hydraulic telescopic rod (13); A mounting plate (14) fixedly connected to the first electric rotating shaft (131); Two clamping plates (15) are symmetrically distributed and are both limitedly slidably connected to the mounting plate (14); The second electric rotating shaft (16) is arranged on the adjacent mounting plate (14); the second electric rotating shaft (16) is provided with an external thread; the clamping plate (15) is threadedly connected to the external thread on the second electric rotating shaft (16).

8. The welding auxiliary device for a mine hydraulic support according to claim 7, characterized in that: An L-shaped plate is fixedly connected to the upper side of the clamping plate (15) for limiting the position of the workpiece.

9. The welding auxiliary device for a mine hydraulic support according to claim 7, characterized in that: Also includes: The support plates (17) have two symmetrically distributed ones, which are respectively arranged on opposite sides of the two mounting plates (14); a fixing component is arranged between the support plate (17) and the adjacent clamping plate (15); and the fixing component is used to change the angle between the support plate (17) and the adjacent mounting plate (14).

10. A welding auxiliary device for a mine hydraulic support according to claim 9, characterized in that: The fixing assembly comprises: An arc-shaped rod (19) is slidably connected to the adjacent support plate (17) and fixedly connected to the adjacent clamping plate (15), and an arc-shaped rack (20) is provided on the arc-shaped rod (19); A self-locking motor (21) is arranged on the support plate (17), and an output shaft of the self-locking motor (21) is fixedly connected to a gear meshing with the arc-shaped rack (20); The fourth hydraulic telescopic rod (24) is ball-connected between the adjacent mounting plate (14) and the adjacent supporting plate (17).

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