Lifting arm welding device for loading and unloading vehicle

Abstract

The invention relates to the technical field of welding, and provides a loading and unloading vehicle lifting arm welding device which comprises a bottom plate, two sliding rails are fixedly connected to the top of the outer surface of the bottom plate, sliding mechanisms are slidably connected to the interiors of the two sliding rails, and a porous containing plate is fixedly connected to the top of the outer surface of the bottom plate; and the outer surface of the sliding mechanism is fixedly connected with a cleaning cotton strip, the cleaning cotton strip is slidably connected to the top of the outer surface of the bottom plate, and the outer surface of the bottom plate is fixedly connected with a first motor. The chippings fall to the surface of the bottom plate at the bottom through long holes in the surface of the porous containing plate, the cleaning cotton strips are driven to slide on the upper surface of the bottom plate when the sliding mechanism moves, the chippings can be cleaned and pushed to the positions outside the two sides, workers do not need to clean the upper surface of the horizontal frame, and meanwhile the problem that the bottom plate is troublesome to clean is solved.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and in particular to a welding device for a lifting arm of a loading and unloading vehicle. Background Art

[0002] Loading and unloading vehicles are widely used in fields such as logistics transportation and industrial assembly. Among them, the lifting arm, as an important component of the loading and unloading vehicle, bears the core functions of lifting and moving materials. Its structural strength and welding quality directly affect the safety and service life of the loading and unloading vehicle. During the manufacturing or maintenance process of the loading and unloading vehicle, the welding of the lifting arm usually requires manual operation of the welding torch for multi-directional welding. This method not only has a high working intensity, but also has problems such as inaccurate positioning, unstable welding quality, limited welding range, and safety hazards.

[0003] In the prior art, although some welding auxiliary devices have improved the welding efficiency to a certain extent, most of them have a single function and lack the multi-dimensional adjustment ability of the welding mechanism, such as horizontal, vertical, height, and angle adjustment, and it is difficult to meet the welding requirements of lifting arms with complex structures or non-standard sizes. In addition, the problems of dust and slag treatment generated during the welding process are generally ignored. Long-term welding operations not only pollute the environment, but also affect the health of the operator and increase the workload of later cleaning.

[0004] Therefore, there is an urgent need for a welding device for a lifting arm of a loading and unloading vehicle with a reasonable structure, diverse functions, convenient operation, and having an automatic cleaning and dust filtering function to solve the technical problems such as low welding efficiency, limited range, and poor welding environment existing in the prior art. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art, such as having a single function, lacking the multi-dimensional adjustment ability of the welding mechanism, such as horizontal, vertical, height, and angle adjustment, and it is difficult to meet the welding requirements of lifting arms with complex structures or non-standard sizes. In addition, the problems of dust and slag treatment generated during the welding process are generally ignored. Long-term welding operations not only pollute the environment, but also affect the health of the operator and increase the workload of later cleaning.

[0006] To achieve the above object, the present invention adopts the following technical solution: a welding device for a loading and unloading vehicle lifting arm, comprising: a bottom plate, the top of the outer surface of the bottom plate is fixedly connected with two sliding rails, and a sliding mechanism is slidably connected inside the two sliding rails. The top of the outer surface of the bottom plate is fixedly connected with a porous placement plate. A cleaning cotton strip is fixedly connected to the outer surface of the sliding mechanism, and the cleaning cotton strip is slidably connected to the top of the outer surface of the bottom plate. The outer surface of the bottom plate is fixedly connected with a motor I, and the output end of the motor I is fixedly connected with a reciprocating screw rod, and the reciprocating screw rod is movably embedded inside the sliding mechanism. The top of the outer surface of the sliding mechanism is fixedly connected with a support frame, and two vertical grooves are opened on the inner wall of the support frame. A lifting block is slidably connected inside the two vertical grooves. The bottom of the outer surface of the lifting block is fixedly connected with a hydraulic cylinder, and the bottom end of the hydraulic cylinder is fixedly connected to the bottom of the inner wall of the support frame. The outer surface of the lifting block is fixedly connected with a horizontal frame.

[0007] The technical effect of adopting the above further solution is that when welding, slag will fall on the upper surface of the porous placement plate and fall onto the surface of the bottom plate at the bottom through the long holes on the surface of the porous placement plate. When the sliding mechanism moves, it drives the cleaning cotton strip to slide on the upper surface of the bottom plate, and the debris can be cleaned and pushed to both sides. There is no need for staff to clean the upper surface of the horizontal frame, and at the same time, the problem of troublesome cleaning of the bottom plate is solved. Place the loading and unloading vehicle lifting arm above the porous placement plate, and weld the loading and unloading vehicle lifting arm through the welding mechanism. At the same time, start the motor I through an external power source, and the motor I drives the reciprocating screw rod to rotate. At this time, the sliding mechanism slides on the outer surface of the reciprocating screw rod, and the sliding mechanism also slides inside the sliding rail to limit its position to prevent the sliding mechanism from rotating with the rotation of the reciprocating screw rod. When the sliding mechanism moves, it drives the welding mechanism to move horizontally. At this time, any horizontal position of the loading and unloading vehicle lifting arm can be welded. At the same time, start the hydraulic cylinder through an external power source, and the hydraulic cylinder can push the lifting block to slide up and down inside the vertical groove, so as to adjust the height of the welding mechanism during welding, and a certain position at any height of the loading and unloading vehicle lifting arm can be welded.

[0008] As a preferred embodiment, two limiting grooves are opened on the inner wall of the horizontal frame, and a slider is slidably connected inside the two limiting grooves. The outer surface of the slider is fixedly connected with an electric push rod I, one end of the electric push rod I is fixedly connected with the horizontal frame, and the outer surface of the slider is fixedly connected with a vertical plate.

[0009] The technical effect of adopting the above further solution is that by starting the electric push rod I through an external power source, the slider can be pushed to slide inside the limiting groove. At this time, the welding mechanism can adjust its distance, so that the distance between the welding mechanism and the loading and unloading vehicle lifting arm can be close or far, and the welding range is wider for different positions.

[0010] As a preferred embodiment, a rotating rod is movably embedded inside the vertical plate near its bottom. An activity plate is movably sleeved on the outer surface of the rotating rod. A limiting strip is fixedly connected to the bottom of the outer surface of the vertical plate. The limiting strip is located at the bottom of the outer surface of the activity plate. A rectangular block is fixedly connected to the outer surface of the activity plate.

[0011] The technical effect of adopting the above further solution is that the second electric push rod pushes the moving block to move horizontally. At this time, the activity plate is pulled to move through the steel wire rope. At this time, the activity plate moves around the rotating rod as the center towards the top of the vertical plate. The steel wire rope slides on the surface of the guiding roller, and the guiding roller rotates to guide the steel wire rope. When the moving block moves towards the rectangular block, the activity plate moves upward under the limitation of the spring.

[0012] As a preferred embodiment, a second motor is fixedly connected to the outer surface of the rectangular block. The output end of the second motor is fixedly connected to a rotating rod. One end of the rotating rod is fixedly connected to a welding mechanism. The rotating rod is movably embedded inside the rectangular block. A spring is fixedly connected to the top of the outer surface of the activity plate. One end of the spring is fixedly connected to the outer surface of the vertical plate. A guiding roller is arranged on the outer surface of the limiting strip.

[0013] The technical effect of adopting the above further solution is that the second motor is started through an external power source. The second motor drives the rotating rod to rotate. At this time, the rotating rod drives the welding mechanism to rotate. At this time, the welding mechanism can realize angular rotation, and the welding efficiency is higher and the range is wider.

[0014] As a preferred embodiment, a second electric push rod is fixedly connected to the bottom of the outer surface of the vertical plate. One end of the second electric push rod is fixedly connected to a moving block. A steel wire rope is fixedly connected to the outer surface of the moving block. The steel wire rope is located on the outer surface of the guiding roller. One end of the steel wire rope is fixedly connected to the outer surface of the activity plate. A dust suction cover is fixedly connected to the top of the outer surface of the vertical plate.

[0015] The technical effect of adopting the above further solution is that when the moving block moves towards the rectangular block, the activity plate moves upward under the limitation of the spring. At this time, when the welding mechanism is welding, it can realize angular rotation and increase the welding range.

[0016] As a preferred embodiment, the dust suction cover is located above the welding mechanism. A third motor is fixedly connected to the inside of the dust suction cover. The output end of the third motor is fixedly connected to a dust suction fan. The dust suction fan rotates inside the dust suction cover. A limiting ring is fixedly connected to the inner wall of the dust suction cover near its top. The top of the outer surface of the limiting ring is detachably connected with an activated carbon filter screen. The activated carbon filter screen is located directly above the third motor. An installation groove is formed in the top of the outer surface of the dust suction cover. A through pipe is detachably connected to the inside of the installation groove.

[0017] The technical effect of adopting the above further solution is as follows: When welding is carried out by the welding mechanism, a large amount of dust will appear. At this time, the motor three is started by an external power source, and the motor three drives the dust suction fan to rotate. When the dust suction fan rotates, the dust can be absorbed into the interior of the dust suction hood. After absorption, through the filtration of the activated carbon filter screen, the harmful substances in the dust are filtered out and then discharged through the through pipe. The through pipe and the dust suction hood can be disassembled and are connected by a flange. The limiting ring limits the activated carbon filter screen to prevent the activated carbon filter screen from slipping out of the interior of the dust suction hood. The length of the through pipe can be adjusted according to the actual use situation and is not limited.

[0018] Compared with the prior art, the advantages and positive effects of the present invention are as follows. 1. In the embodiment of the present invention, when welding, slag will fall on the upper surface of the porous placement plate and fall to the surface of the bottom plate through the long holes on the surface of the porous placement plate. When the sliding mechanism moves, it drives the cleaning cotton strip to slide on the upper surface of the bottom plate, and can clean and push the debris, pushing it to the outer sides on both sides. It is not necessary for the staff to clean the upper surface of the horizontal frame, and at the same time, the problem of troublesome cleaning of the bottom plate is also solved.

[0019] 2. In the embodiment of the present invention, when welding is carried out by the welding mechanism, a large amount of dust will appear. At this time, the motor three is started by an external power source, and the motor three drives the dust suction fan to rotate. When the dust suction fan rotates, the dust can be absorbed into the interior of the dust suction hood. After absorption, through the filtration of the activated carbon filter screen, the harmful substances in the dust are filtered out and then discharged through the through pipe. The through pipe and the dust suction hood can be disassembled and are connected by a flange. The limiting ring limits the activated carbon filter screen to prevent the activated carbon filter screen from slipping out of the interior of the dust suction hood. The length of the through pipe can be adjusted according to the actual use situation and is not limited.

[0020] 3. In the embodiment of the present invention, the lifting arm of the loading and unloading vehicle is placed above the porous placement plate, and the lifting arm of the loading and unloading vehicle is welded by the welding mechanism. At the same time, the first motor is started by an external power supply, and the first motor drives the reciprocating lead screw to rotate. At this time, the sliding mechanism slides on the outer surface of the reciprocating lead screw, and the sliding mechanism also slides inside the slide rail to limit it, preventing the sliding mechanism from rotating as the reciprocating lead screw rotates. When the sliding mechanism moves, it drives the welding mechanism to move horizontally. At this time, welding can be performed at any horizontal position of the lifting arm of the loading and unloading vehicle. At the same time, the hydraulic cylinder is started by an external power supply, and the hydraulic cylinder can push the lifting block to slide up and down inside the vertical groove, so as to adjust the height of the welding mechanism during welding, and welding can be performed at a certain position at any height of the lifting arm of the loading and unloading vehicle. At the same time, the first electric push rod is started by an external power supply to push the slider to slide inside the limiting groove. At this time, the welding mechanism can adjust its distance, so that the distance between the welding mechanism and the lifting arm of the loading and unloading vehicle can be close or far. For different positions, the welding range is wider. The second electric push rod pushes the moving block to move horizontally. At this time, the movable plate is pulled by the steel wire rope to move. At this time, the movable plate moves towards the top of the vertical plate with the rotating rod as the center. The steel wire rope slides on the surface of the guiding roller, and the guiding roller rotates to guide the steel wire rope. When the moving block moves towards the rectangular block, the movable plate moves upward under the limit of the spring. At this time, when the welding mechanism is welding, it can realize angular trajectory movement, increasing the welding range. Description of the Drawings

[0021] Figure 1 Schematic three-dimensional structure diagram of a welding device for the lifting arm of a loading and unloading vehicle provided by the present invention; Figure 2 Enlarged structure diagram of the second electric push rod of a welding device for the lifting arm of a loading and unloading vehicle provided by the present invention; Figure 3 Schematic internal structure diagram of the dust suction hood of a welding device for the lifting arm of a loading and unloading vehicle provided by the present invention; Figure 4 Schematic structure diagram of the third motor of a welding device for the lifting arm of a loading and unloading vehicle provided by the present invention; Figure 5 Schematic structure diagram of the dust suction fan of a welding device for the lifting arm of a loading and unloading vehicle provided by the present invention; Figure 6 Schematic top planar structure diagram of a welding device for the lifting arm of a loading and unloading vehicle provided by the present invention; Figure 7 Schematic side view structure diagram of a welding device for the lifting arm of a loading and unloading vehicle provided by the present invention; Figure 8 Schematic front planar structure diagram of a welding device for the lifting arm of a loading and unloading vehicle provided by the present invention; Figure 9Schematic side view plane structure diagram of a welding device for a loading and unloading vehicle lifting arm provided by the present invention.

[0022] Legend: 101, bottom plate; 102, slide rail; 103, motor 1; 104, reciprocating lead screw; 105, sliding mechanism; 106, support frame; 107, hydraulic cylinder; 108, lifting block; 109, vertical groove; 110, horizontal frame; 112, electric push rod 1; 113, limit groove; 114, slider; 115, vertical plate; 116, rotating rod; 117, movable plate; 118, spring; 119, limit bar; 120, motor 2; 121, rotating rod; 122, welding mechanism; 123, electric push rod 2; 124, moving block; 125, steel wire rope; 126, guide roller; 127, rectangular block; 128, dust suction hood; 129, motor 3; 130, dust suction fan; 131, limit ring; 132, installation groove; 133, activated carbon filter screen; 134, through pipe; 135, porous placement plate; 136, cleaning cotton strip. Specific implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-9 , this embodiment provides a technical solution: a welding device for a loading and unloading vehicle lifting arm, including: a bottom plate 101, two slide rails 102 are fixedly connected to the top of the outer surface of the bottom plate 101, a sliding mechanism 105 is slidably connected inside the two slide rails 102, a porous placement plate 135 is fixedly connected to the top of the outer surface of the bottom plate 101, a cleaning cotton strip 136 is fixedly connected to the outer surface of the sliding mechanism 105, the cleaning cotton strip 136 is slidably connected to the top of the outer surface of the bottom plate 101, a motor 103 is fixedly connected to the outer surface of the bottom plate 101, the output end of the motor 103 is fixedly connected to a reciprocating lead screw 104, the reciprocating lead screw 104 is movably embedded inside the sliding mechanism 105, a support frame 106 is fixedly connected to the top of the outer surface of the sliding mechanism 105, two vertical grooves 109 are opened on the inner wall of the support frame 106, a lifting block 108 is slidably connected inside the two vertical grooves 109, a hydraulic cylinder 107 is fixedly connected to the bottom of the outer surface of the lifting block 108, the bottom end of the hydraulic cylinder 107 is fixedly connected to the bottom of the inner wall of the support frame 106, and a horizontal frame 110 is fixedly connected to the outer surface of the lifting block 108.

[0025] During use, when welding, slag will fall on the upper surface of the porous placement plate 135 and drop to the surface of the bottom plate 101 through the long holes on the surface of the porous placement plate 135. When the sliding mechanism 105 moves, it drives the cleaning cotton strip 136 to slide on the upper surface of the bottom plate 101, which can clean and push the debris to both sides outside. There is no need for staff to clean the upper surface of the horizontal frame 110, and at the same time, the problem of troublesome cleaning of the bottom plate 101 is solved. Place the lifting arm of the loading and unloading vehicle above the porous placement plate 135, and weld the lifting arm of the loading and unloading vehicle through the welding mechanism 122. At the same time, start the first motor 103 through an external power source. The first motor 103 drives the reciprocating screw rod 104 to rotate. At this time, the sliding mechanism 105 slides on the outer surface of the reciprocating screw rod 104, and the sliding mechanism 105 also slides inside the slide rail 102 to limit it, preventing the sliding mechanism 105 from rotating with the rotation of the reciprocating screw rod 104. When the sliding mechanism 105 moves, it drives the welding mechanism 122 to move horizontally. At this time, any horizontal position of the lifting arm of the loading and unloading vehicle can be welded. At the same time, start the hydraulic cylinder 107 through an external power source. The hydraulic cylinder 107 can push the lifting block 108 to slide up and down inside the vertical groove 109, so as to adjust the height of the welding mechanism 122 during welding, and a certain position at any height of the lifting arm of the loading and unloading vehicle can be welded.

[0026] As Figures 1-9 shown, in one embodiment, two limiting grooves 113 are opened on the inner wall of the horizontal frame 110. A slider 114 is slidably connected inside the two limiting grooves 113. An electric push rod 112 is fixedly connected to the outer surface of the slider 114. One end of the electric push rod 112 is fixedly connected to the horizontal frame 110. A vertical plate 115 is fixedly connected to the outer surface of the slider 114. By starting the electric push rod 112 through an external power source, the slider 114 can be pushed to slide inside the limiting groove 113. At this time, the welding mechanism 122 can adjust its distance, so that the distance between the welding mechanism 122 and the lifting arm of the loading and unloading vehicle can be closer or farther, and the welding range is wider for different positions.

[0027] As Figures 1-9As shown, in one embodiment, a rotating rod 116 is movably embedded inside the vertical plate 115 near its bottom. An activity plate 117 is movably sleeved on the outer surface of the rotating rod 116. A limiting strip 119 is fixedly connected to the bottom of the outer surface of the vertical plate 115. The limiting strip 119 is located at the bottom of the outer surface of the activity plate 117. A rectangular block 127 is fixedly connected to the outer surface of the activity plate 117. The electric push rod two 123 pushes the moving block 124 to move horizontally. At this time, the activity plate 117 is pulled to move through the steel wire rope 125. At this time, the activity plate 117 moves towards the top of the vertical plate 115 with the rotating rod 116 as the center. The steel wire rope 125 slides on the surface of the guiding roller 126, and the guiding roller 126 rotates to guide the steel wire rope 125. When the moving block 124 moves towards the rectangular block 127, the activity plate 117 moves upward under the limitation of the spring 118.

[0028] As Figures 1-9 shown, in one embodiment, a motor two 120 is fixedly connected to the outer surface of the rectangular block 127. The output end of the motor two 120 is fixedly connected to a rotating rod 121. One end of the rotating rod 121 is fixedly connected to a welding mechanism 122. The rotating rod 121 is movably embedded inside the rectangular block 127. A spring 118 is fixedly connected to the top of the outer surface of the activity plate 117. One end of the spring 118 is fixedly connected to the outer surface of the vertical plate 115. A guiding roller 126 is arranged on the outer surface of the limiting strip 119. The motor two 120 is started through an external power source. The motor two 120 drives the rotating rod 121 to rotate. At this time, the rotating rod 121 drives the welding mechanism 122 to rotate. At this time, the welding mechanism 122 can realize angular rotation, and the welding efficiency is higher and the range is wider.

[0029] As Figures 1-9 shown, in one embodiment, an electric push rod two 123 is fixedly connected to the bottom of the outer surface of the vertical plate 115. One end of the electric push rod two 123 is fixedly connected to a moving block 124. A steel wire rope 125 is fixedly connected to the outer surface of the moving block 124. The steel wire rope 125 is located on the outer surface of the guiding roller 126. One end of the steel wire rope 125 is fixedly connected to the outer surface of the activity plate 117. A dust suction hood 128 is fixedly connected to the top of the outer surface of the vertical plate 115. When the moving block 124 moves towards the rectangular block 127, the activity plate 117 moves upward under the limitation of the spring 118. At this time, when the welding mechanism 122 is welding, it can realize angular rotation and increase the welding range.

[0030] As Figures 1-9As shown, in one embodiment, the dust suction hood 128 is located above the welding mechanism 122. A third motor 129 is fixedly connected inside the dust suction hood 128. The output end of the third motor 129 is fixedly connected with a dust suction fan 130. The dust suction fan 130 rotates inside the dust suction hood 128. A limiting ring 131 is fixedly connected to the inner wall of the dust suction hood 128 near its top. The top of the outer surface of the limiting ring 131 is detachably connected with an activated carbon filter screen 133. The activated carbon filter screen 133 is located directly above the third motor 129. An installation groove 132 is formed in the top of the outer surface of the dust suction hood 128. A through pipe 134 is detachably connected inside the installation groove 132. When the welding mechanism 122 is welding, a large amount of smoke and dust will appear. At this time, the third motor 129 is started by an external power source. The third motor 129 drives the dust suction fan 130 to rotate. When the dust suction fan 130 rotates, the smoke and dust can be absorbed into the dust suction hood 128. After absorption, through the filtration of the activated carbon filter screen 133, the harmful substances in the smoke and dust are filtered out and then discharged through the through pipe 134. The through pipe 134 and the dust suction hood 128 can be disassembled and are connected by a flange. The limiting ring positions the activated carbon filter screen to prevent the activated carbon filter screen from slipping out of the dust suction hood. The length of the through pipe 134 can be adjusted according to the actual use situation and is not limited by length.

[0031] Working principle: When in use, place the lifting arm of the loading and unloading vehicle above the porous placement plate 135, and weld the lifting arm of the loading and unloading vehicle through the welding mechanism 122. At the same time, start the first motor 103 through an external power source. The first motor 103 drives the reciprocating lead screw 104 to rotate. At this time, the sliding mechanism 105 slides on the outer surface of the reciprocating lead screw 104, and the sliding mechanism 105 also slides inside the slide rail 102 to limit it, preventing the sliding mechanism 105 from rotating with the rotation of the reciprocating lead screw 104. When the sliding mechanism 105 moves, it drives the welding mechanism 122 to move horizontally. At this time, welding can be performed at any horizontal position of the lifting arm of the loading and unloading vehicle. At the same time, start the hydraulic cylinder 107 through an external power source. The hydraulic cylinder 107 can push the lifting block 108 to slide up and down inside the vertical groove 109, so as to adjust the height of the welding mechanism 122 during welding, and welding can be performed at a certain position at any height of the lifting arm of the loading and unloading vehicle. At the same time, start the first electric push rod 112 through an external power source to push the slider 114 to slide inside the limit groove 113. At this time, the welding mechanism 122 can adjust its distance, so that the distance between the welding mechanism 122 and the lifting arm of the loading and unloading vehicle can be closer or farther. For different positions, the welding range is wider. The second electric push rod 123 pushes the moving block 124 to move horizontally. At this time, the movable plate 117 is pulled to move through the steel wire rope 125. At this time, the movable plate 117 moves towards the top of the vertical plate 115 with the rotating rod 116 as the center. The steel wire rope 125 slides on the surface of the guide roller 126, and the guide roller 126 rotates to guide the steel wire rope 125. When the moving block 124 moves towards the rectangular block 127, under the limit of the spring 118, the movable plate 117 moves upward. At this time, when the welding mechanism 122 performs welding, it can realize angular rotation and increase the welding range. When the welding mechanism 122 performs welding, a lot of smoke and dust will appear. At this time, start the third motor 129 through an external power source. The third motor 129 drives the dust suction fan 130 to rotate. When the dust suction fan 130 rotates, it can absorb the smoke and dust into the inside of the dust suction hood 128. After absorption, through the filtration of the activated carbon filter screen 133, the harmful substances in the smoke and dust are filtered out and then discharged through the through pipe 134. The through pipe 134 and the dust suction hood 128 can be disassembled and are connected by a flange. The limiting ring limits the activated carbon filter screen to prevent the activated carbon filter screen from slipping off the inside of the dust suction hood. The length of the through pipe 134 can be adjusted according to the actual use situation and is not limited. At the same time, when welding, slag will fall on the upper surface of the porous placement plate 135 and fall to the surface of the bottom plate 101 through the long holes on the surface of the porous placement plate 135. When the sliding mechanism 105 moves, it drives the cleaning cotton strip 136 to slide on the upper surface of the bottom plate 101, and can clean and push the debris, pushing it to both sides outside. It is not necessary for the staff to clean the upper surface of the horizontal frame 110, and at the same time, it also solves the problem of troublesome cleaning of the bottom plate 101.

[0032] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A welding device for the lifting arm of a loading and unloading vehicle, comprising: Base plate (101), characterized in that two slide rails (102) are fixedly connected to the top of the outer surface of the base plate (101), a sliding mechanism (105) is slidably connected inside the two slide rails (102), a porous placement plate (135) is fixedly connected to the top of the outer surface of the base plate (101), a cleaning cotton strip (136) is fixedly connected to the outer surface of the sliding mechanism (105), the cleaning cotton strip (136) is slidably connected to the top of the outer surface of the base plate (101), a first motor (103) is fixedly connected to the outer surface of the base plate (101), a reciprocating lead screw (104) is fixedly connected to the output end of the first motor (103), the reciprocating lead screw (104) is movably embedded inside the sliding mechanism (105), a support frame (106) is fixedly connected to the top of the outer surface of the sliding mechanism (105), two vertical grooves (109) are provided on the inner wall of the support frame (106), a lifting block (108) is slidably connected inside the two vertical grooves (109), a hydraulic cylinder (107) is fixedly connected to the bottom of the outer surface of the lifting block (108), the bottom end of the hydraulic cylinder (107) is fixedly connected to the bottom of the inner wall of the support frame (106), and a horizontal frame (110) is fixedly connected to the outer surface of the lifting block (108).

2. The welding device for the lifting arm of a loading and unloading vehicle according to claim 1, characterized in that: Two limiting grooves (113) are provided on the inner wall of the horizontal frame (110), a slider (114) is slidably connected inside the two limiting grooves (113), a first electric push rod (112) is fixedly connected to the outer surface of the slider (114), one end of the first electric push rod (112) is fixedly connected to the horizontal frame (110), and a vertical plate (115) is fixedly connected to the outer surface of the slider (114).

3. The welding device for the lifting arm of a loading and unloading vehicle according to claim 2, characterized in that: A rotating rod (116) is movably embedded inside the vertical plate (115) near its bottom, a movable plate (117) is movably sleeved on the outer surface of the rotating rod (116), a limiting strip (119) is fixedly connected to the bottom of the outer surface of the vertical plate (115), the limiting strip (119) is located at the bottom of the outer surface of the movable plate (117), and a rectangular block (127) is fixedly connected to the outer surface of the movable plate (117).

4. The welding device for the lifting arm of a loading and unloading vehicle according to claim 3, characterized in that: A second motor (120) is fixedly connected to the outer surface of the rectangular block (127), a rotating rod (121) is fixedly connected to the output end of the second motor (120), a welding mechanism (122) is fixedly connected to one end of the rotating rod (121), the rotating rod (121) is movably embedded inside the rectangular block (127), and a spring (118) is fixedly connected to the top of the outer surface of the movable plate (117).

5. A welding device for the lifting arm of a loading and unloading vehicle according to claim 4, characterized in that: One end of the spring (118) is fixedly connected to the outer surface of the vertical plate (115), and a guide roller (126) is provided on the outer surface of the limiting strip (119).

6. The welding device for the lifting arm of a loading and unloading vehicle according to claim 5, characterized in that: A second electric push rod (123) is fixedly connected to the bottom of the outer surface of the vertical plate (115), and a moving block (124) is fixedly connected to one end of the second electric push rod (123).

7. A welding device for the lifting arm of a loading and unloading vehicle according to claim 6, characterized in that: A steel wire rope (125) is fixedly connected to the outer surface of the moving block (124). The steel wire rope (125) is located on the outer surface of the guide roller (126). One end of the steel wire rope (125) is fixedly connected to the outer surface of the movable plate (117). A dust suction hood (128) is fixedly connected to the top of the outer surface of the vertical plate (115).

8. A welding device for the lifting arm of a loading and unloading vehicle according to claim 7, characterized in that: The dust suction hood (128) is located above the welding mechanism (122). A motor three (129) is fixedly connected to the inside of the dust suction hood (128). The output end of the motor three (129) is fixedly connected to a dust suction fan (130). The dust suction fan (130) rotates inside the dust suction hood (128).

9. The welding device for the lifting arm of a loading and unloading vehicle according to claim 8, characterized in that: A limiting ring (131) is fixedly connected to the inner wall of the dust suction hood (128) near its top. The top of the outer surface of the limiting ring (131) is detachably connected to an activated carbon filter screen (133). The activated carbon filter screen (133) is located directly above the motor three (129).

10. A welding device for the lifting arm of a loading and unloading vehicle according to claim 9, characterized in that: An installation groove (132) is formed in the top of the outer surface of the dust suction hood (128). A through pipe (134) is detachably connected to the inside of the installation groove (132).

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