Coal mining machine welding clamping device

Abstract

The present invention belongs to the field of welding technology, and in particular relates to a coal mining machine welding clamping device, comprising a base and a bearing seat arranged at the upper end of the base, and further comprising: a gear rotating mechanism, the gear rotating mechanism being installed on the end face of the base and driving the bearing seat to rotate; a clamping plate being arranged above the bearing seat, the base being equipped with a clamping drive mechanism, and the base being connected to the clamping plate via the clamping drive mechanism; a clamping seat being arranged on one side of the clamping plate, the clamping drive mechanism being equipped with a cross-top mechanism, and the cross-top mechanism being fixedly connected to the side wall of the clamping seat. The present invention can clamp the blades at multiple points, prevent the blades from being deformed by welding as much as possible, and can promptly alert personnel when the blades are deformed by welding. At the same time, through pre-welding detection, it can ensure that the blades are accurately installed on the drum, and through post-welding detection, it can promptly detect the phenomenon of poor welding quality, thereby ensuring the welding quality of the blades.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, and in particular relates to a welding clamping device for a coal mining machine. Background Art

[0002] Coal mining machine drum blade welding is a key link in coal mining machine manufacturing. During the welding process, the blades need to be accurately fixed on the drum body to ensure welding quality and accuracy. With the continuous development of coal mining machine technology, the requirements for drum blade welding are increasing.

[0003] At present, when welding the drum blades, it is necessary to first fix the drum body, then clamp and fix the blades with a clamp, and then fix the blades on the drum with the clamp, and then weld the blades with a welding machine, such as a coal mining machine welding clamping device disclosed in patent publication number CN213794992U;

[0004] The drum blades are spiral-shaped. When welding the blades, the blades are generally welded from one end. Under the action of welding thermal stress, the spiral blades may be deformed. Ordinary fixtures generally only fix the blades by clamping at two or three points, which cannot improve the blade welding deformation phenomenon. Secondly, due to the spiral shape of the blades, it is not easy for the staff to find the blade welding deformation phenomenon. At the same time, after a point on the blade is deformed due to welding thermal stress, the part of the blade to be welded behind this point may be offset due to welding deformation, affecting the welding quality of the blade. Summary of the Invention

[0005] The purpose of the present invention is to provide a coal mining machine welding clamping device in view of the above problems.

[0006] To achieve the above-mentioned object, the present invention adopts the following technical solutions: A coal mining machine welding clamping device includes a base and a bearing seat arranged at the upper end of the base, and further includes:

[0007] A gear rotating mechanism is mounted on the end surface of the base and drives the bearing seat to rotate;

[0008] A pressing plate is arranged above the bearing seat, the base is equipped with a pressing drive mechanism, and the base is connected to the pressing plate through the pressing drive mechanism;

[0009] A clamping seat is provided on one side of the clamping plate, the clamping drive mechanism is equipped with a horizontal top mechanism, and the horizontal top mechanism is fixedly connected to the side wall of the clamping seat, the side wall of the clamping seat is fixedly equipped with a spiral clamping cover, a plurality of clamping strips are provided inside the spiral clamping cover, a plurality of bolt drive assemblies are installed on the end surface of the spiral clamping cover, and the spiral clamping cover is connected to each clamping strip through the bolt drive assembly, and a deformation detection mechanism is installed on the end surface of each clamping strip;

[0010] A heating unit is installed inside the spiral clamping cover;

[0011] A heat-sensing detection unit is installed at the bottom of the pressing plate, and a trigger mechanism is installed on the end surface of the pressing plate, and the trigger mechanism is electrically connected to the heat-sensing detection unit;

[0012] The controller is arranged above the base, and the gear rotation mechanism, the pressing drive mechanism, the horizontal push mechanism, the deformation detection mechanism, the heating unit, the heat detection unit and the trigger mechanism are all electrically connected to the controller.

[0013] Preferably, the clamping drive mechanism includes a U-shaped support frame fixedly mounted on the end face of the base, and a vertical push electric cylinder is fixedly plugged into the end face of the U-shaped support frame, the telescopic end of the vertical push electric cylinder is fixedly connected to the end face of the clamping plate, and the vertical push electric cylinder is electrically connected to the controller.

[0014] Preferably, the horizontal top mechanism includes a side panel fixedly mounted on the inner top of the U-shaped support frame, the side wall of the side panel is fixedly plugged with a horizontal push electric cylinder, and the telescopic end of the horizontal push electric cylinder is fixedly connected to the side wall of the clamping seat, and the horizontal push electric cylinder is electrically connected to the controller.

[0015] Preferably, each of the deformation detection mechanisms includes a mounting groove provided at the end of the clamping bar away from the bolt driving assembly, and a pressure detector is fixedly installed on the top of the mounting groove, a push rod is fixedly installed on the detection end of the pressure detector, a touch block is fixedly installed on the end of the push rod away from the pressure detector, and an elastic sleeve is fixedly provided between the top of the touch block and the mounting groove, the elastic sleeve is provided on the outside of the pressure detector, and the pressure detector is electrically connected to the controller.

[0016] Preferably, the heating unit includes a sealed heat-conducting cover fixedly installed inside the spiral clamping cover, an electric heater matching the spiral clamping cover is fixedly installed inside the sealed heat-conducting cover, and the interior of the sealed heat-conducting cover is filled with heat-conducting oil, and the electric heater is electrically connected to the controller.

[0017] Preferably, the thermal detection unit includes an inner cylinder fixedly installed at the bottom of the pressing plate, and a plurality of insulating and heat-insulating cylinders are fixedly inserted into the side wall of the inner cylinder, and each of the insulating and heat-insulating cylinders is spirally distributed along the side wall of the inner cylinder. A thermistor column is fixedly installed inside each of the insulating and heat-insulating cylinders, and an elastic heat-conductive protrusion is fixedly installed at the opening of the insulating and heat-insulating cylinder, and the thermistor column is electrically connected to the controller.

[0018] Preferably, the trigger mechanism includes a plurality of magnetic isolation hollow plates fixedly mounted on the top of the pressure plate, a left electromagnetic push rod fixedly mounted inside the magnetic isolation hollow plate, and an insulating plate fixedly mounted on the telescopic end of the left electromagnetic push rod, a pre-welding conductive block and a post-welding conductive block fixedly mounted on the side wall of the insulating plate, the pre-welding conductive block is arranged below the post-welding conductive block, a right electromagnetic push rod is also fixedly mounted inside the magnetic isolation hollow plate, and an insulating T-shaped block is fixedly mounted on the telescopic end of the right electromagnetic push rod, a movable conductive block is fixedly mounted on one end of the insulating T-shaped block close to the insulating plate, a pre-welding electromagnetic switch and a post-welding electromagnetic switch are fixedly mounted on the inner top of the magnetic isolation hollow plate, and the movable The movable conductive block is electrically connected to the pre-welding electromagnetic switch through the pre-welding conductive block, and the movable conductive block is electrically connected to the post-welding electromagnetic switch through the post-welding conductive block. The outer wall of the magnetic isolation hollow plate is fixedly installed with a pre-welding indicator light and a post-welding indicator light. The pre-welding electromagnetic switch is electrically connected to the pre-welding indicator light through a controller, and the post-welding electromagnetic switch is electrically connected to the post-welding indicator light through a controller. A magnetic fixing component is fixedly installed inside the magnetic isolation hollow plate. The right electromagnetic push rod is electrically connected to the corresponding thermistor column through the controller. The side wall of the U-shaped support frame is fixedly installed with a thermistor, and the thermistor is electrically connected to the left electromagnetic push rod through the controller.

[0019] Preferably, the magnetic fixing assembly includes an iron block fixedly mounted on one end of the insulating T-shaped block away from the movable conductive block, and the inner wall of the magnetic isolation hollow plate is fixedly mounted with an electromagnetic strip corresponding to the position of the iron block, and the electromagnetic strip is electrically connected to the controller.

[0020] Compared with the existing technology, the advantages of a coal mining machine welding clamping device are:

[0021] 1. Through the mutual cooperation of the provided base, bearing seat, gear rotating mechanism, clamping plate, and clamping drive mechanism, the cylinder of the drum can be clamped and fixed, and through the mutual cooperation of the provided clamping seat, cross-top mechanism, spiral clamping cover, clamping strip, and bolt drive assembly, the blades can be clamped and fixed, and the blades can be clamped and fixed at multiple points by each clamping strip, which can prevent the blades from being deformed due to welding thermal stress as much as possible, and in conjunction with the provided deformation detection mechanism, the blades can be subjected to multi-point deformation detection during the welding process, so as to remind the staff in time and try to avoid the outflow of deformed blades.

[0022] 2. The heating unit can be used to preheat the blades and the drum body before welding. The preheating setting can reduce the temperature difference between the drum body and the blades during welding, thereby further reducing the possibility of deformation of the blades or the drum body, and reducing the impact of welding thermal stress on the blades.

[0023] 3. The thermal detection unit can cooperate with the heating unit to detect the connection between the blade and the cylinder before welding, so that when the blade is skewed or offset, it can automatically remind the staff to ensure the installation and clamping effect of the blade. Secondly, the thermal detection unit can detect the welding temperature during the welding process, so that when the weld is offset or the welding is excessive, it can automatically remind the staff to help improve the welding effect of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of a coal mining machine welding clamping device provided by the present invention;

[0025] Figure 2 This is a structural schematic diagram of a compression drive mechanism of a coal mining machine welding clamping device provided by the present invention;

[0026] Figure 3 This is a structural schematic diagram of a clamping seat of a coal mining machine welding clamping device provided by the present invention;

[0027] Figure 4 The present invention provides a coal mining machine welding clamping device Figure 3 A magnified view of the structure of part A;

[0028] Figure 5 This is a schematic diagram of the internal structure of an insulating and heat-insulating cylinder of a coal mining machine welding clamping device provided by the present invention;

[0029] Figure 6 The present invention provides a schematic diagram of the internal structure of a magnetic isolation hollow plate of a coal mining machine welding clamping device.

[0030] In the figure: 1 base, 2 bearing seat, 3 gear rotation mechanism, 4 pressing plate, 5 pressing drive mechanism, 51 U-shaped support frame, 52 vertical push electric cylinder, 6 clamping seat, 7 horizontal push mechanism, 71 side plate, 72 horizontal push electric cylinder, 8 spiral clamping cover, 9 clamping bar, 10 bolt drive assembly, 11 deformation detection mechanism, 111 mounting groove, 112 pressure detector, 113 push rod, 114 contact pressure block, 115 elastic sleeve, 12 heating unit, 121 sealed heat conductive cover, 122 electric heater, 13 heat detection unit, 131 Inner cylinder, 132 insulating and heat-insulating cylinder, 133 thermistor column, 134 elastic heat-conducting protrusion, 14 trigger mechanism, 141 magnetic isolation hollow plate, 142 left electromagnetic push rod, 143 insulating plate, 144 conductive block before welding, 145 conductive block after welding, 146 right electromagnetic push rod, 147 insulating T-shaped block, 148 movable conductive block, 149 electromagnetic switch before welding, 15 controller, 16 electromagnetic switch after welding, 17 indicator light before welding, 18 indicator light after welding, 19 magnetic fixing assembly, 191 iron block, 192 electromagnetic strip, 20 thermistor. DETAILED DESCRIPTION

[0031] The technical solutions 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 only part of the embodiments of the present invention, rather than all the embodiments.

[0032] like Figures 1-6 As shown, a coal mining machine welding clamping device includes a base 1 and a supporting seat 2 arranged at the upper end of the base 1, and also includes: a gear rotating mechanism 3, the gear rotating mechanism 3 is installed on the end face of the base 1, and drives the supporting seat 2 to rotate, the gear rotating mechanism 3 includes a moving gear, a gear sleeve, a reduction motor, a bearing and other components, and the reduction motor can drive the moving gear to rotate, so that the gear sleeve can drive the supporting seat 2 to rotate. This is an existing mature technology, so it will not be described here. The clamping plate 4 is arranged above the supporting seat 2, and the base 1 is equipped with a clamping drive mechanism 5, and the base 1 is connected to the clamping plate 4 through the clamping drive mechanism 5. The clamping drive mechanism 5 includes a U-shaped support frame 51 fixedly mounted on the end face of the base 1, and the end face of the U-shaped support frame 51 is fixedly plugged with a vertical push electric cylinder 52, the telescopic end of the vertical push electric cylinder 52 is fixedly connected to the end face of the clamping plate 4, and the vertical push electric cylinder 52 is electrically connected to the controller 15.

[0033] The clamping seat 6 is arranged on one side of the clamping plate 4, and the clamping drive mechanism 5 is equipped with a horizontal top mechanism 7, and the horizontal top mechanism 7 is fixedly connected to the side wall of the clamping seat 6. The side wall of the clamping seat 6 is fixedly equipped with a spiral clamping cover 8, and the interior of the spiral clamping cover 8 is provided with a plurality of clamping strips 9. The end face of the spiral clamping cover 8 is equipped with a plurality of bolt drive assemblies 10, and the spiral clamping cover 8 is connected to each clamping strip 9 through the bolt drive assembly 10. The horizontal top mechanism 7 includes a side plate 71 fixedly mounted on the inner top of the U-shaped support frame 51, and the side wall of the side plate 71 is fixedly plugged with a horizontal push electric cylinder 7 2, and the telescopic end of the horizontal push electric cylinder 72 is fixedly connected to the side wall of the clamping seat 6, the horizontal push electric cylinder 72 is electrically connected to the controller 15, and a hydraulic station (not shown in the figure) is installed on the base 1, which is used to cooperate with the driving of the horizontal push electric cylinder 72 and the vertical push electric cylinder 52 to work, wherein the bolt drive assembly 10 includes bolts, limiting slides, bearings and other components, the bolts are rotatably connected to the clamping bar 9 through the bearings, and the bolts are threadedly matched with the end face of the spiral clamping cover 8, and the limiting slide is installed on the clamping bar 9, and the limiting slide is slidably connected to the end face of the spiral clamping cover 8.

[0034] A deformation detection mechanism 11 is installed on the end face of each clamping bar 9, and each deformation detection mechanism 11 includes a mounting groove 111 opened at the end of the clamping bar 9 away from the bolt driving assembly 10, and a pressure detector 112 is fixedly installed on the top of the mounting groove 111, and a push rod 113 is fixedly installed on the detection end of the pressure detector 112, and a touch block 114 is fixedly installed on the end of the push rod 113 away from the pressure detector 112, and an elastic sleeve 115 is fixed between the top of the touch block 114 and the mounting groove 111, and the elastic sleeve 115 is sleeved on the outside of the pressure detector 112. The pressure detector 112 is electrically connected to the controller 15. The pressure detector 112 can detect pressure in real time and output an electrical signal to the controller 15 when the pressure exceeds the threshold range.

[0035] The heating unit 12 is installed inside the spiral clamping cover 8. The heating unit 12 includes a sealed heat-conducting cover 121 fixedly installed inside the spiral clamping cover 8. An electric heater 122 matching the spiral clamping cover 8 is fixedly installed inside the sealed heat-conducting cover 121, and the interior of the sealed heat-conducting cover 121 is filled with heat-conducting oil. The electric heater 122 is electrically connected to the controller 15, and the heat heated by the electric heater 122 can be transferred to the sealed heat-conducting cover 121 through the heat-conducting oil.

[0036] The thermal detection unit 13 is installed at the bottom of the pressing plate 4, and a trigger mechanism 14 is installed on the end face of the pressing plate 4, and the trigger mechanism 14 is electrically connected to the thermal detection unit 13. The thermal detection unit 13 includes an inner cylinder 131 fixedly installed at the bottom of the pressing plate 4, and a plurality of insulating and heat-insulating cylinders 132 are fixedly inserted into the side wall of the inner cylinder 131. Each insulating and heat-insulating cylinder 132 is spirally distributed along the side wall of the inner cylinder 131. A thermistor column 133 is fixedly installed inside each insulating and heat-insulating cylinder 132, and an elastic heat-conducting protrusion 134 is fixedly installed at the opening of the insulating and heat-insulating cylinder 132. The thermistor column 133 is electrically connected to the controller 15. The thermistor column 133 can decrease as the temperature increases within a specific stable range.

[0037] The controller 15 is arranged above the base 1, and the gear rotation mechanism 3, the pressing drive mechanism 5, the horizontal top mechanism 7, the deformation detection mechanism 11, the heating unit 12, the heat detection unit 13 and the trigger mechanism 14 are all electrically connected to the controller 15. The trigger mechanism 14 includes a plurality of magnetic isolation hollow plates 141 fixedly mounted on the top of the pressing plate 4, and a left electromagnetic push rod 142 is fixedly mounted inside the magnetic isolation hollow plate 141, and an insulating plate 143 is fixedly mounted on the telescopic end of the left electromagnetic push rod 142, and the side wall of the insulating plate 143 is fixedly mounted. There are pre-welding conductive blocks 144 and post-welding conductive blocks 145. The pre-welding conductive block 144 is arranged below the post-welding conductive block 145. A right electromagnetic push rod 146 is fixedly provided inside the magnetic isolation hollow plate 141, and an insulating T-shaped block 147 is fixedly installed on the telescopic end of the right electromagnetic push rod 146. A movable conductive block 148 is fixedly installed on one end of the insulating T-shaped block 147 close to the insulating plate 143. A pre-welding electromagnetic switch 149 and a post-welding electromagnetic switch 16 are fixedly installed on the inner top of the magnetic isolation hollow plate 141. The movable conductive block 148 is fixedly provided with a pre-welding electromagnetic switch 149 and a post-welding electromagnetic switch 16. The electric block 144 is electrically connected to the pre-welding electromagnetic switch 149, the movable conductive block 148 is electrically connected to the post-welding electromagnetic switch 16 through the post-welding conductive block 145, the outer wall of the magnetic isolation hollow plate 141 is fixedly installed with a pre-welding indicator light 17 and a post-welding indicator light 18, the pre-welding electromagnetic switch 149 is electrically connected to the pre-welding indicator light 17 through the controller 15, the post-welding electromagnetic switch 16 is electrically connected to the post-welding indicator light 18 through the controller 15, the interior of the magnetic isolation hollow plate 141 is fixedly installed with a magnetic fixing component 19, the right electromagnetic push rod 146 The controller 15 is electrically connected to the corresponding thermistor column 133, and the side wall of the U-shaped support frame 51 is fixedly mounted with a thermistor 20. The thermistor 20 is electrically connected to the left electromagnetic push rod 142 through the controller 15. The thermistor 20 can decrease in temperature as the temperature increases within a specific stable range. The left electromagnetic push rod 142 and the right electromagnetic push rod 146 both use the principle of like charges repelling each other, and push the permanent magnet away through the electromagnetic component, so that the movable rod can be telescopically moved. This is an existing mature technology, so it will not be elaborated here.

[0038] The magnetic fixing component 19 includes an iron block 191 fixedly installed on the end of the insulating T-shaped block 147 away from the movable conductive block 148. The inner wall of the magnetic isolation hollow plate 141 is fixedly installed with an electromagnetic strip 192 corresponding to the position of the iron block 191. The electromagnetic strip 192 is electrically connected to the controller 15. After the electromagnetic strip 192 is energized, it can adsorb and fix the iron block 191 on the side wall of the insulating T-shaped block 147. The insulating T-shaped block 147 is made of magnetic isolation material.

[0039] The operating principle of the present invention is described as follows: the drum body is mounted on the support 2 by means of a hoisting device or the like (ensuring that the drum body and the support 2 are coaxial), and then the blade to be welded is inserted into the spiral clamping cover 8 (the shape of the spiral clamping cover 8 matches the shape of the blade), and then the bolts of each bolt driving assembly 10 are tightened to move each clamping bar 9 downward, so that the blade can be clamped and fixed by the clamping bar 9, and then the controller 15 is started;

[0040] After the controller 15 is started, it controls the vertical electric oil cylinder 52 to work at a fixed time. The vertical electric oil cylinder 52 can drive the pressing plate 4 to move downward and insert the inner cylinder 131 into the interior of the cylinder. After the vertical electric oil cylinder 52 completes its work, the pressing plate 4 will press and fix the cylinder. Then the controller 15 controls the horizontal electric oil cylinder 72 to work at a fixed time. The horizontal electric oil cylinder 72 drives the blade to move toward the cylinder through the clamping seat 6, the spiral clamping cover 8 and the clamping bar 9. After the horizontal electric oil cylinder 72 completes its work, the end of the blade to be welded abuts against the outer wall of the cylinder.

[0041] Then, the controller 15 controls the electric heater 122 to work regularly (the heating temperature of the electric heater 122 is 70°C ± 1°C), and the heat heated by the electric heater 122 is conducted to the blades through the heat-conducting oil and the sealed heat-conducting cover 121 (when the blades are inserted into the spiral clamping cover 8, it is necessary to make the end of the blades away from the cylinder against the outer wall of the sealed heat-conducting cover 121), and then the heat is conducted to the cylinder through the blades, and finally conducted to each elastic heat-conducting protrusion 134 on the side wall of the inner cylinder 131 (when the inner cylinder 131 is inserted into the cylinder, each elastic heat-conducting protrusion 134 will be tightly against the inner wall of the cylinder, and the position of each elastic heat-conducting protrusion 134 is spirally distributed along the contact position between the blade and the cylinder), and finally the heat is conducted to each thermistor column 133 through the elastic heat-conducting protrusion 134;

[0042] When the controller 15 starts the electric heater 122, the controller 15 synchronously controls the connection circuits of the thermistor 20 and each left electromagnetic push rod 142 to be connected. The thermistor 20 can detect the ambient temperature and reduce its own resistance as the ambient temperature rises (the thermistor 20 has a resistance that decreases as the temperature rises within the range of -10°C to 100°C). After the connection circuits of the left electromagnetic push rod 142 and the thermistor 20 are connected, the left electromagnetic push rod 142 will push its own insulating plate 143 upward, and the higher the ambient temperature, the higher the upward height of the insulating plate 143. After the electric heater 122 has been working for 3 minutes, the controller 15 will start the electric heater 122. 5. Connect the connection circuit between each thermistor column 133 and the corresponding right electromagnetic push rod 146, and keep the connection circuit energized for 5 seconds. If the blade angle is skewed or offset, or there is a large gap in the welding end surface of the blade, the heat that can be conducted to the thermistor column 133 will decrease within 3 minutes, causing the resistance of the thermistor column 133 to remain at a high state (the resistance of the thermistor column 133 decreases as the temperature increases within the range of 10°C to 200°C). At this time, after the connection circuit between the thermistor column 133 and the right electromagnetic push rod 146 is energized, the right electromagnetic push rod 146 can push the insulating T-shaped block 147 upward. The distance of movement is relatively limited, which makes it impossible for the movable conductive block 148 to contact the pre-weld conductive block 144. When the blade and the cylinder are precisely docked, more heat is conducted to the cylinder through the blade. At this time, the temperature of each thermistor column 133 is relatively high, so the resistance of each thermistor column 133 itself is kept at a low state, so that the right electromagnetic push rod 146 pushes the insulating T-shaped block 147 to move up to a suitable height, so that the movable conductive block 148 contacts the pre-weld conductive block 144, so that the moving contact of the pre-weld electromagnetic switch 149 remains in the attracted state. If the controller 15 is connected to the connection circuit of the thermistor column 133 and the right electromagnetic push rod 146 for 5 seconds If the controller 15 does not receive the electrical signal from the pre-weld electromagnetic switch 149 within 1 minute, it means that there is a defect in the position of the thermistor column 133 (for example, the end of the blade is missing, which affects heat conduction, and the strength of the defective position of the blade is insufficient after welding). At this time, the controller 15 will control the pre-weld indicator light 17 to work for a certain time (at least 1 minute to ensure that the staff has enough time to check). If the controller 15 receives the electrical signal from the pre-weld electromagnetic switch 149, it will not control the corresponding pre-weld indicator light 17 to light up. The staff can know whether the blade is accurately installed before welding and whether the blade meets the welding requirements by checking whether the pre-weld indicator light 17 is on.

[0043] When all the pre-welding indicator lights 17 are on, the personnel can start the welding work on the blades (when the controller 15 receives the closing electrical signals of the pre-welding electromagnetic switches 149, the display screen of the controller 15 will prompt the personnel to start the welding work), and the personnel start the external automatic welding manipulator, and the automatic welding manipulator immediately starts welding the blades (the control end of the automatic welding manipulator can also be connected to the controller 15, and when the controller 15 receives the closing electrical signals of all the pre-welding electromagnetic switches 149, the controller 15 sends a start signal to the automatic welding manipulator, and then the automatic welding manipulator can start the automatic welding work). At the same time, the controller 15 controls each right electromagnetic push rod 14 6 and the corresponding thermistor column 133 are connected in sequence (the connection order is from the welding start end to the welding end), and the connection time of each connection circuit is 3 seconds. At the same time, after each connection circuit is connected for 2 seconds, the corresponding electromagnetic strip 192 is controlled to work synchronously (that is, the working order of each electromagnetic strip 192 is the same as the connection order of each right electromagnetic push rod 146 and the corresponding thermistor column 133). During welding, if the weld is offset or there is a cold weld, the welding heat will be reduced due to the offset (misalignment with the position of the corresponding thermistor column 133) and the cold weld (resulting in a smaller contact area between the weld and the cylinder). Therefore, the thermistor column 133 rises. The temperature is relatively limited. At this time, the current flowing into the right electromagnetic push rod 146 is not enough to move the insulating T-shaped block 147 to a suitable height, so that the movable conductive block 148 is lower than the post-weld conductive block 145. After the electromagnetic strip 192 is energized, the electromagnetic strip 192 will generate a magnetic attraction on the iron block 191, thereby being able to adsorb and fix the insulating T-shaped block 147, so that after the connection circuit between the right electromagnetic push rod 146 and the corresponding thermistor column 133 is disconnected, the insulating T-shaped block 147 will not move downward, ensuring that the insulating T-shaped block 147 remains stable. After the insulating T-shaped block 147 is adsorbed and fixed, if the movable conductive block 148 is lower than the post-weld conductive block 145, so that the movable conductive block 148 is not in contact with the post-weld conductive block 145, then the corresponding post-weld conductive block 147 is not in contact with the post-weld conductive block 145. The moving contact of the electromagnetic switch 16 cannot be closed. If the welding quality is stable, the weld is accurate, and there is no cold weld, the movable conductive block 148 will contact the post-weld conductive block 145. At this time, the corresponding moving contact of the post-weld electromagnetic switch 16 is attracted, so the controller 15 will receive the closing electrical signal of the post-weld electromagnetic switch 16. After the controller 15 does not receive the closing electrical signal of the post-weld electromagnetic switch 16, the controller 15 will control the corresponding post-weld indicator light 18 to light up. At the same time, the controller 15 controls the external automatic welding manipulator to stop working (when the control end of the automatic welding manipulator is connected to the controller 15), and at the same time, sends a voice alarm through its own alarm module to remind personnel (the personnel control the end of the welding work);

[0044] After the blade is welded, if the controller 15 receives all the closed electrical signals of the post-weld electromagnetic switches 16, it means that the welding work of the blade is completed (for blades that require double-sided welding, since the first weld has been completed and the fixation of the blade and the cylinder has been completed, the second weld will not cause defects such as skewness and offset of the blade). When each clamping bar 9 presses and clamps the blade, each contact block 114 will abut against the side wall of the blade, and the side wall of the blade will apply a certain pressure to the pressure detector 112 through the contact block 114 and the push rod 113. At this time, the pressure detected by the pressure detector 112 is at the threshold value (the The threshold range can be set according to the shape and thickness of the blade design. If, during the welding process, the blade is excessively deformed, the local position of the blade will be tilted to one side, bulged or sunken, etc., which will cause the pressure exerted by the side wall of the blade on the contact block 114 to change, thereby causing the pressure detected by the pressure detector 112 to exceed or fall below the threshold range. At this time, the pressure detector 112 will output an electrical signal to the controller 15. After receiving the electrical signal output by the pressure detector 112, the controller 15 will immediately issue a voice alarm through its own alarm module to remind personnel. At this time, the welding work should be stopped immediately and the blade should be trimmed in time.

[0045] After the welding of a single blade is completed, the clamping bar 9 is separated from the blade through each bolt drive assembly 10, and the reset button on the controller 15 is activated. The controller 15 will control the horizontal push electric cylinder 72 and the vertical push electric cylinder 52 to work in sequence, thereby driving the clamping seat 6 and the clamping plate 4 to move back and reset. Subsequently, the controller 15 controls the gear rotation mechanism 3 to work in a timed manner. The gear rotation mechanism 3 can drive the supporting seat 2 to drive the cylinder to rotate a certain angle, and then wait for the temperature of the cylinder and each thermistor column 133 to return to normal temperature (external means can be used to assist cooling, such as through a fan), and then the welding work of the next blade can be started.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A coal mining machine welding clamping device, comprising a base (1) and a bearing seat (2) arranged on the upper end of the base (1), characterized in that: Also includes: A gear rotating mechanism (3) is mounted on the end surface of the base (1) and drives the bearing seat (2) to rotate; A pressing plate (4) is arranged above the bearing seat (2); the base (1) is equipped with a pressing drive mechanism (5), and the base (1) is connected to the pressing plate (4) via the pressing drive mechanism (5); A clamping seat (6) is arranged on one side of the clamping plate (4), the clamping drive mechanism (5) is equipped with a transverse top mechanism (7), and the transverse top mechanism (7) is fixedly connected to the side wall of the clamping seat (6), the side wall of the clamping seat (6) is fixedly equipped with a spiral clamping cover (8), a plurality of clamping strips (9) are provided inside the spiral clamping cover (8), a plurality of bolt drive assemblies (10) are installed on the end face of the spiral clamping cover (8), and the spiral clamping cover (8) is connected to each clamping strip (9) through the bolt drive assembly (10), and a deformation detection mechanism (11) is installed on the end face of each clamping strip (9); A heating unit (12) is installed inside the spiral clamping cover (8); A heat-sensing detection unit (13) is installed at the bottom of the pressing plate (4); a trigger mechanism (14) is installed on the end surface of the pressing plate (4), and the trigger mechanism (14) is electrically connected to the heat-sensing detection unit (13); A controller (15) is arranged above the base (1), and the gear rotation mechanism (3), the pressing drive mechanism (5), the horizontal push mechanism (7), the deformation detection mechanism (11), the heating unit (12), the heat detection unit (13) and the trigger mechanism (14) are all electrically connected to the controller (15); Each of the deformation detection mechanisms (11) includes a mounting groove (111) provided at one end of the clamping bar (9) away from the bolt driving assembly (10), and a pressure detector (112) is fixedly mounted on the top of the mounting groove (111), a push rod (113) is fixedly mounted on the detection end of the pressure detector (112), a touch block (114) is fixedly mounted on the end of the push rod (113) away from the pressure detector (112), and an elastic sleeve (115) is fixedly provided between the top of the touch block (114) and the mounting groove (111), the elastic sleeve (115) is sleeved on the outside of the pressure detector (112), and the pressure detector (112) is electrically connected to the controller (15); The heating unit (12) comprises a sealed heat-conducting cover (121) fixedly mounted inside the spiral clamping cover (8), an electric heater (122) matching the spiral clamping cover (8) fixedly mounted inside the sealed heat-conducting cover (121), and the interior of the sealed heat-conducting cover (121) is filled with heat-conducting oil, and the electric heater (122) is electrically connected to the controller (15).

2. A coal mining machine welding clamping device according to claim 1, characterized in that: The clamping drive mechanism (5) includes a U-shaped support frame (51) fixedly mounted on the end face of the base (1), and a vertical push electric cylinder (52) is fixedly plugged into the end face of the U-shaped support frame (51), the telescopic end of the vertical push electric cylinder (52) is fixedly connected to the end face of the clamping plate (4), and the vertical push electric cylinder (52) is electrically connected to the controller (15).

3. A coal mining machine welding clamping device according to claim 2, characterized in that: The horizontal push mechanism (7) includes a side plate (71) fixedly mounted on the inner top of the U-shaped support frame (51), a horizontal push electric cylinder (72) is fixedly plugged into the side wall of the side plate (71), and the telescopic end of the horizontal push electric cylinder (72) is fixedly connected to the side wall of the clamping seat (6), and the horizontal push electric cylinder (72) is electrically connected to the controller (15).

4. A coal mining machine welding clamping device according to claim 2, characterized in that: The heat-sensing detection unit (13) includes an inner tube (131) fixedly mounted on the bottom of the pressing plate (4), and a plurality of insulating and heat-isolating tubes (132) are fixedly plugged into the side wall of the inner tube (131), each of the insulating and heat-isolating tubes (132) is spirally distributed along the side wall of the inner tube (131), and a thermistor column (133) is fixedly mounted inside each of the insulating and heat-isolating tubes (132), and an elastic heat-conducting protrusion (134) is fixedly mounted at the opening of the insulating and heat-isolating tube (132), and the thermistor column (133) is electrically connected to the controller (15).

5. A coal mining machine welding clamping device according to claim 4, characterized in that: The trigger mechanism (14) comprises a plurality of magnetic isolation hollow plates (141) fixedly mounted on the top of the pressing plate (4); a left electromagnetic push rod (142) is fixedly mounted inside the magnetic isolation hollow plates (141); an insulating plate (143) is fixedly mounted on the telescopic end of the left electromagnetic push rod (142); a pre-welding conductive block (144) and a post-welding conductive block (145) are fixedly mounted on the side wall of the insulating plate (143); the pre-welding conductive block (144) is arranged on the post-welding conductive block (145); 45), a right electromagnetic push rod (146) is fixedly provided inside the magnetic isolation hollow plate (141), and an insulating T-shaped block (147) is fixedly installed at the telescopic end of the right electromagnetic push rod (146), and a movable conductive block (148) is fixedly installed at one end of the insulating T-shaped block (147) close to the insulating plate (143), and a pre-welding electromagnetic switch (149) and a post-welding electromagnetic switch (16) are fixedly installed on the inner top of the magnetic isolation hollow plate (141), and the movable conductive block ( 148) is electrically connected to the pre-weld electromagnetic switch (149) through the pre-weld conductive block (144), the movable conductive block (148) is electrically connected to the post-weld electromagnetic switch (16) through the post-weld conductive block (145), the outer wall of the magnetic isolation hollow plate (141) is fixedly mounted with a pre-weld indicator light (17) and a post-weld indicator light (18), the pre-weld electromagnetic switch (149) is electrically connected to the pre-weld indicator light (17) through the controller (15), the post-weld electromagnetic switch (1 6) It is electrically connected to the post-weld indicator light (18) through the controller (15), a magnetic fixing component (19) is fixedly installed inside the magnetic isolation hollow plate (141), the right electromagnetic push rod (146) is electrically connected to the corresponding thermistor column (133) through the controller (15), and a thermistor (20) is fixedly installed on the side wall of the U-shaped support frame (51), and the thermistor (20) is electrically connected to the left electromagnetic push rod (142) through the controller (15).

6. A coal mining machine welding clamping device according to claim 5, characterized in that: The magnetic attraction fixing assembly (19) includes an iron block (191) fixedly mounted on one end of the insulating T-shaped block (147) away from the movable conductive block (148), and an electromagnetic strip (192) corresponding to the position of the iron block (191) is fixedly mounted on the inner wall of the magnetic isolation hollow plate (141), and the electromagnetic strip (192) is electrically connected to the controller (15).

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