Welding auxiliary system based on semi-trailer frame

Abstract

The present invention provides a welding auxiliary system based on a semi-trailer frame, comprising a supporting bottom surface, a movable groove is provided at the top of the supporting bottom surface, a plurality of supporting columns are provided on both sides of the movable groove, and the tops of all the supporting columns are used to support a semi-trailer frame; the middle plate body is rectangular, and the four corners of the middle plate body are vertically provided with supporting columns, and the middle plate body is connected to the middle of the supporting columns; the moving wheels are used to move the positions of all the supporting columns, and the moving wheels are all located in the movable groove; the positioning mechanism is used to fix the positions of the supporting columns; the lifting plate is located above the middle plate body, and the lifting plate is used to support workers; the lifting mechanism is used to control the height of the lifting plate. The welding auxiliary system based on the semi-trailer frame provided by the present invention can make the operation effect better.

Description

Technical Field

[0001] The invention belongs to the technical field of production of semitrailer frames and relates to a welding auxiliary system based on the semitrailer frame. Background Art

[0002] A semi-trailer is a trailer with an axle placed behind the center of gravity of the vehicle (when the vehicle is evenly loaded) and equipped with a coupling device that can transmit horizontal and vertical forces to the tractor. Semi-trailers are generally three-axle semi-trailers, which are divided into many types such as 11-meter warehouse semi-trailers, 13-meter warehouse semi-trailers, low-bed semi-trailers, etc. It is a heavy-duty transportation vehicle connected to the semi-trailer head through a traction pin. Different from a full trailer, a semi-trailer is a trailer with an axle placed behind the center of gravity of the vehicle (when the vehicle is evenly loaded) and equipped with a coupling device that can transmit horizontal or vertical forces to the tractor. Generally, a full trailer has two axles and a semi-trailer has one axle.

[0003] Simply put, a full trailer is connected to the truck in front with a hook, while a semi-trailer is connected to the tractor's traction seat through a traction pin. A common container transport truck is a typical semi-trailer train, and the loading part at the back is a semi-trailer. There are also differences in usage. Full trailers are mainly used for short-distance transportation within factories, ports, docks, warehouses and other areas, while semi-trailers are mainly used for long-distance transportation of goods.

[0004] At present, in the production of semi-trailers, the production of semi-trailer frames is one of the core steps; the semi-trailer frame includes several strip structures, which are then welded after being arranged in a corresponding distribution; in actual welding, the semi-trailer frame is usually spot-welded into the required shape and then fully welded, so as to ensure the shape of the semi-trailer frame and its strength. During the welding process, since the semi-trailer frame is large and there are many places that need to be welded, most workers drill into the hollow part of the semi-trailer frame and then weld the corresponding positions; however, since there are many diagonal braces and reinforcement structures in the semi-trailer frame, the height difference of the welding place is large. In order to weld all the places that need to be welded, the height of the semi-trailer frame cannot be set too high, so workers need to squat frequently to weld, and the operation effect is poor. Summary of the invention

[0005] The invention aims to provide a welding auxiliary system based on a semitrailer frame, aiming to solve the problem of poor operating effect.

[0006] In order to solve the above technical problems, the present invention provides a welding auxiliary system based on a semi-trailer frame, comprising:

[0007] A supporting bottom surface, wherein a movable groove is formed at the top of the supporting bottom surface, and a plurality of supporting columns are provided on both sides of the movable groove, and the tops of all the supporting columns are used to support half of the trailer frame;

[0008] A middle plate body, the middle plate body is rectangular, and four corners of the middle plate body are vertically provided with supporting columns, and the middle plate body is connected to the middle part of the supporting columns;

[0009] Moving wheels, the moving wheels are used to move the positions of all the supporting columns, and the moving wheels are all located in the movable grooves;

[0010] A positioning mechanism, the positioning mechanism is used to fix the position of the supporting column;

[0011] A lifting plate, the lifting plate is located above the middle plate body, and the lifting plate is used to support workers;

[0012] A lifting mechanism is used to control the height of the lifting plate.

[0013] The present invention is further configured such that the support column comprises two first columns and two second columns, the first column is hingedly provided with a first arm body on the inner side thereof, the free end of the first arm body is obliquely provided with an inclined portion, a U-shaped first linkage portion is provided between the free ends of the two inclined portions, and the bottom of the inclined portion is connected to the first arm body;

[0014] A second arm body is hingedly provided on the inner side of the second column, a second linkage part is provided between the inner sides of the two second arm bodies, the bottoms of the first column and the second column are both provided with the moving wheels, and the lower side of the second arm body is movably attached to the lower side of the first linkage part;

[0015] The first arm body and the second arm body include a first state and a second state;

[0016] When the first arm body and the second arm body are in the first state, the first arm body, the second arm body and the first linkage part are all in a horizontal state, and the second arm body is attached to the lower side of the first linkage part, the first arm body is fixedly connected to the second arm body, and the bottom of the moving wheel is lower than the bottom of the supporting column;

[0017] When the first arm body and the second arm body are in the second state, both the first arm body and the second arm body are in an inclined state, and the supporting column abuts against the bottom of the movable groove.

[0018] The present invention is further configured such that a drag reduction column is rotatably provided on the top of the free end of the second arm body, and the drag reduction column movably contacts the lower side of the first linkage portion.

[0019] The present invention is further configured such that a U-shaped locking piece is hingedly provided between the outer sides of the two first linkage parts, the opening of the locking piece is downward, a locking opening is provided on one side of the locking piece close to the hinged end of the second arm body, and a locking part is provided on the outer side of the second arm body, and when the locking opening is engaged with the locking part, the first arm body and the second arm body are in the first state.

[0020] The present invention is further configured such that a first elastic member which is continuously in an extended state is provided between the top of the first linkage portion and the top of the locking member, and the first elastic member and the locking opening are located on both sides of the locking member.

[0021] The present invention is further configured such that the bottom of the locking piece is inclined, and an end portion is further provided on the outer side of the first linkage portion, and the end portion is lower than a hinge between the locking piece and the first linkage portion. When the first arm body and the second arm body are in the second state, the side of the locking piece on which the locking opening is provided abuts against the end portion, and when the first linkage portion is rotated downward, the locking portion can act on the inclined portion at the bottom of the locking piece, thereby driving the locking piece to rotate and causing the first elastic piece to further extend.

[0022] The present invention is further configured such that a lower pressing plate is provided on the outer side of the first linkage portion, and an unlocking arm is provided on the top of one side of the locking member.

[0023] The present invention is further configured such that the lifting mechanism comprises a fixed cylinder vertically arranged in the middle of the middle plate body, the fixed cylinder is hollow, lifting grooves are vertically opened on both sides of the fixed cylinder, a lifting cylinder is vertically movably arranged in the fixed cylinder, a horizontal plate is horizontally arranged in the middle of the lifting cylinder, a thrust spring is arranged between the bottom of the fixed cylinder and the lower side of the horizontal plate, and a tension spring is arranged between the top of the fixed cylinder and the upper side of the horizontal plate;

[0024] A linkage cylinder is vertically movably arranged outside the fixed cylinder, an integral part is arranged between the inner side of the linkage cylinder and the outer side of the lifting cylinder, the integral part is movably located in the lifting groove, the inner wall of the linkage cylinder and the outer wall of the lifting cylinder are movably fitted to the fixed cylinder, a positioning strip is vertically arranged on the outer wall of the linkage cylinder, the cross section of the positioning strip is an isosceles trapezoid, and the lower bottom of the cross section of the positioning strip is connected to the linkage cylinder;

[0025] The top of the middle plate body is also provided with a support frame, and the top of the support frame is horizontally movably provided with a positioning rod, and both ends of the positioning rod are located at the outside of the support frame, the longitudinal section of the positioning rod is rectangular, and the outer wall of the positioning rod is movably fitted into the opening on the support frame, and one end of the positioning rod is provided with a positioning piece with a C-shaped cross section, and the opening of the positioning piece faces the positioning strip, and the inner wall of the positioning piece includes a middle inner wall and two side inner walls located on both sides of the middle inner wall, and two positioning grooves in the shape of upper and lower mirror images are provided on the side inner walls, and the positioning groove includes a receiving groove and a locking groove, and the depth of the locking groove decreases with increasing distance from the middle of the side inner wall, and a second elastic piece that is continuously in a compressed state is provided in the receiving groove, and a locking column is movably provided in the locking groove, and the locking column abuts against the free end of the second elastic piece, the locking groove and the side of the positioning strip;

[0026] A third elastic member which is continuously in an extended state is arranged between the side of the support frame away from the positioning member and the positioning rod.

[0027] The present invention is further configured such that an auxiliary frame is vertically arranged on the top of the middle plate body, an auxiliary column is horizontally rotatably arranged on the top of the auxiliary frame, the auxiliary column abuts against the side of the linkage cylinder away from the positioning member, a top plate body is arranged on the top of the support column, a clearance hole for the linkage cylinder to movably pass through is opened in the middle of the top plate body, anti-slip portions are arranged on both sides of the locking column, anti-slip grooves are opened on both sides of the locking groove, the anti-slip portion is movably located in the anti-slip groove, and both ends of the anti-slip groove have a set distance from the inner wall of the side portion;

[0028] The lower side of the top plate body is provided with two arc-shaped arc parts, a magnetic body is provided between the two arc parts, an arc-shaped arc groove is provided through the arc part, the outer end of the positioning rod is hingedly provided with an unlocking piece, and the two outer sides of the unlocking piece are provided with unlocking parts, and the two outer sides of the unlocking piece are movably fitted to the inner side of the arc part, and the unlocking part is movably fitted to the inner wall of the arc groove, and the outer inner wall of the arc groove is provided with an elastic protrusion;

[0029] When the unlocking member is in a horizontal state, the positioning member fixes the position of the positioning bar, the lower side of the unlocking portion abuts against the upper side of the elastic protrusion, the top of the unlocking portion abuts against the top of the arc-shaped groove, the unlocking member fits against the bottom of the magnetic body, and the unlocking member and the magnetic body are magnetically attracted;

[0030] When the unlocking member is in a tilted state, the locking column and the positioning bar are in a separated state, and the lower side of the unlocking portion abuts against the bottom of the arc groove.

[0031] The present invention is further configured such that the lifting mechanism comprises a gas pressure rod, the bottom of the gas pressure rod is connected to the middle plate body, and the top of the gas pressure rod is connected to the lifting plate.

[0032] Compared with the prior art, the present invention provides a welding auxiliary system based on a semi-trailer frame. When the semi-trailer frame is fully welded, firstly, the semi-trailer frame is supported by support columns, and secondly, the components for supporting workers composed of the middle plate body, support columns and lifting plates can be moved in movable grooves, so as to move to a suitable position for welding; wherein the semi-trailer frame is usually not raised too high during the actual welding process, so it is necessary to open a movable groove on the supporting bottom surface (i.e., the concrete floor) so that the workers have enough space when operating below; secondly, when the workers are actually welding, it is preferred that they sit on the lifting platform. The support plate comprises a connecting plate at the bottom and a rotating plate connected to the connecting plate. Workers can rotate the rotating plate when sitting on the rotating plate. In this way, when welding, workers can weld the periphery when they are in the hollow of the same semi-trailer frame. Secondly, when welding at different heights of the semi-trailer frame, the lifting mechanism can be used to raise the lifting plate to a suitable position for welding. In this way, although the size of the semi-trailer frame is large, welding can be carried out after the required height is reached by controlling the lifting. There is no need for workers to squat or bend over continuously for welding, and the operating effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of an embodiment of a welding auxiliary system based on a semi-trailer frame of the present invention;

[0034] Figure 2 The structure diagram of the worker support part of the welding auxiliary system based on the semi-trailer frame of the present invention is as follows: Figure 1 ;

[0035] Figure 3 yes Figure 2 A magnified view of part A;

[0036] Figure 4 The structure diagram of the worker support part of the welding auxiliary system based on the semi-trailer frame of the present invention is as follows: Figure 2 ;

[0037] Figure 5 yes Figure 4 A magnified view of part B;

[0038] Figure 6 yes Figure 4 Enlarged view of part C;

[0039] Figure 7It is a cross-sectional view of an embodiment of a worker-supporting part in a welding auxiliary system based on a semitrailer frame of the present invention;

[0040] Figure 8 yes Figure 7 A magnified view of part D in the middle;

[0041] Fig. 9 yes Figure 7 Enlarged view of part E in the middle;

[0042] Fig.10 The present invention is a cross-sectional view of an embodiment of the positioning part of the welding auxiliary system based on the semi-trailer frame Figure 1 ;

[0043] Fig.11 The present invention is a cross-sectional view of an embodiment of a positioning member part of a welding auxiliary system based on a semi-trailer frame. Figure 2 ;

[0044] Fig.12 It is a schematic diagram of an embodiment of a positioning member part in a welding auxiliary system based on a semi-trailer frame of the present invention;

[0045] Fig.13 yes Fig.12 Enlarged view of part F.

[0046] Among them, 1, support bottom surface; 2, movable groove; 3, support column; 4, middle plate body; 5, support column; 5a, first column; 5b, second column; 6, moving wheel; 7, lifting plate; 8, first arm body; 9, inclined part; 10, first linkage part; 11, second arm body; 12, second linkage part; 13, drag reduction column; 14, locking member; 15, locking port; 16, locking part; 17, first elastic member; 18, termination part; 19, lower pressure plate; 20, unlocking arm; 21, fixing cylinder; 22, lifting groove; 23, lifting cylinder; 24, horizontal plate; 25 , thrust spring; 26, tension spring; 27, linkage cylinder; 28, integrated part; 29, positioning strip; 30, support frame; 31, positioning rod; 32, positioning member; 33, middle inner wall; 34, side inner wall; 35, positioning groove; 35a, accommodating groove; 35b, locking groove; 36, second elastic member; 37, locking column; 38, third elastic member; 39, auxiliary frame; 40, auxiliary column; 41, top plate body; 42, make way hole; 43, anti-slip groove; 44, arc-shaped part; 45, magnetic body; 46, arc-shaped groove; 47, unlocking member; 48, unlocking part. DETAILED DESCRIPTION

[0047] The welding auxiliary system based on the semi-trailer frame proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will become clearer. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the accompanying drawings represent the same or similar components.

[0048] A welding auxiliary system based on a semi-trailer frame, such as Figures 1 to 13 As shown, including:

[0049] A supporting bottom surface 1, a movable groove 2 is provided at the top of the supporting bottom surface 1, a plurality of supporting columns 3 are provided on both sides of the movable groove 2, and the tops of all the supporting columns 3 are used to support half of the trailer frame;

[0050] A middle plate body 4, wherein the middle plate body 4 is rectangular, and four corners of the middle plate body 4 are vertically provided with support columns 5, and the middle plate body 4 is connected to the middle of the support columns 5;

[0051] Moving wheels 6, the moving wheels 6 are used to move the positions of all the supporting columns 5, and the moving wheels 6 are all located in the movable slots 2;

[0052] A positioning mechanism, the positioning mechanism is used to fix the position of the supporting column 5;

[0053] A lifting plate 7, the lifting plate 7 is located above the middle plate body 4, and the lifting plate 7 is used to support workers;

[0054] A lifting mechanism, wherein the lifting mechanism is used to control the height of the lifting plate 7.

[0055] The support column 5 includes two first columns 5a and two second columns 5b. The first column 5a is hingedly provided with a first arm 8 at the upper and lower sides. The free end of the first arm 8 is obliquely provided with an inclined portion 9. A U-shaped first linkage portion 10 is provided between the free ends of the two inclined portions 9. The bottom of the inclined portion 9 is connected to the first arm 8.

[0056] The second arm body 11 is hingedly provided on the inner side of the second column 5b, and a second linkage part 12 is provided between the inner sides of the two second arm bodies 11. The bottoms of the first column 5a and the second column 5b are provided with the moving wheels 6, and the lower side of the second arm body 11 is movably attached to the lower side of the first linkage part 10.

[0057] The first arm body 8 and the second arm body 11 include a first state and a second state;

[0058] When the first arm 8 and the second arm 11 are in the first state, the first arm 8, the second arm 11 and the first linkage part 10 are all in a horizontal state, and the second arm 11 is attached to the lower side of the first linkage part 10, the first arm 8 is fixedly connected to the second arm 11, and the bottom of the moving wheel 6 is lower than the bottom of the supporting column 5;

[0059] When the first arm body 8 and the second arm body 11 are in the second state, both the first arm body 8 and the second arm body 11 are in a tilted state, and the supporting column 5 abuts against the bottom of the movable groove 2 .

[0060] A drag reduction column 13 is rotatably provided at the top of the free end of the second arm body 11 , and the drag reduction column 13 movably contacts the lower side of the first linkage part 10 .

[0061] A U-shaped locking piece 14 is hingedly provided between the outer sides of the two first linkage parts 10, and the opening of the locking piece 14 is downward. A locking opening 15 is provided on one side of the locking piece 14 close to the hinged end of the second arm body 11, and a locking part 16 is provided on the outer side of the second arm body 11. When the locking opening 15 is engaged with the locking part 16, the first arm body 8 and the second arm body 11 are in the first state.

[0062] A first elastic member 17 which is continuously in an extended state is disposed between the top of the first linkage portion 10 and the top of the locking member 14 . The first elastic member 17 and the locking opening 15 are located on both sides of the locking member 14 .

[0063] The bottom of the locking member 14 is inclined, and an end portion 18 is further provided on the outer side of the first linkage portion 10. The end portion 18 is lower than the hinge between the locking member 14 and the first linkage portion 10. When the first arm 8 and the second arm 11 are in the second state, the side of the locking member 14 on which the locking opening 15 is provided abuts against the end portion 18, and when the first linkage portion 10 is rotated downward, the locking portion 16 can act on the inclined portion 9 at the bottom of the locking member 14, drive the locking member 14 to rotate, and make the first elastic member 17 further extend.

[0064] A lower pressing plate 19 is disposed on the outer side of the first linkage portion 10 , and an unlocking arm 20 is disposed on the top of one side of the locking member 14 .

[0065] The lifting mechanism includes a fixed cylinder 21 vertically arranged in the middle of the middle plate body 4, the fixed cylinder 21 is hollow, and lifting grooves 22 are vertically opened on both sides of the fixed cylinder 21. A lifting cylinder 23 is vertically movably arranged in the fixed cylinder 21, and a horizontal plate 24 is horizontally arranged in the middle of the lifting cylinder 23. A thrust spring 25 is arranged between the bottom of the fixed cylinder 21 and the lower side of the horizontal plate 24, and a tension spring 26 is arranged between the top of the fixed cylinder 21 and the upper side of the horizontal plate 24.

[0066] A linkage cylinder 27 is vertically movably provided on the outside of the fixed cylinder 21, an integral part 28 is provided between the inner side of the linkage cylinder 27 and the outer side of the lifting cylinder 23, the integral part 28 is movably located in the lifting groove 22, the inner wall of the linkage cylinder 27 and the outer wall of the lifting cylinder 23 are both movably attached to the fixed cylinder 21, a positioning strip 29 is vertically provided on the outer wall of the linkage cylinder 27, the cross section of the positioning strip 29 is an isosceles trapezoid, and the lower bottom of the cross section of the positioning strip 29 is connected to the linkage cylinder 27;

[0067] A support frame 30 is also provided on the top of the middle plate body 4, and a positioning rod 31 is movably provided on the top of the support frame 30 horizontally. Both ends of the positioning rod 31 are located on the outside of the support frame 30. The longitudinal section of the positioning rod 31 is rectangular, and the outer wall of the positioning rod 31 is movably fitted into the opening on the support frame 30. A positioning piece 32 with a C-shaped cross section is provided at one end of the positioning rod 31. The opening of the positioning piece 32 faces the positioning strip 29, and the inner wall of the positioning piece 32 includes a middle inner wall 33 and two inner walls located on the middle inner wall 33. Two side inner walls 34 on the side, two positioning grooves 35 in the shape of upper and lower mirror images are provided on the side inner walls 34, the positioning grooves 35 include a receiving groove 35a and a locking groove 35b, the depth of the locking groove 35b decreases as the distance from the middle of the side inner wall 34 increases, a second elastic member 36 that is continuously in a compressed state is provided in the receiving groove 35a, a locking column 37 is movably provided in the locking groove 35b, and the locking column 37 abuts against the free end of the second elastic member 36, the locking groove 35b and the side of the positioning strip 29;

[0068] A third elastic member 38 that is continuously in an extended state is disposed between the side of the support frame 30 away from the positioning member 32 and the positioning rod 31 .

[0069] An auxiliary frame 39 is also vertically arranged on the top of the middle plate body 4, and an auxiliary column 40 is horizontally rotatably arranged on the top of the auxiliary frame 39, and the auxiliary column 40 abuts against the side of the linkage cylinder 27 away from the positioning member 32, and a top plate body 41 is arranged on the top of the support column 5, and a clearance hole 42 for the linkage cylinder 27 to move through is opened in the middle of the top plate body 41, and anti-slip portions are arranged on both sides of the locking column 37, and anti-slip grooves 43 are opened on both sides of the locking groove 35b, and the anti-slip portions are movably located in the anti-slip grooves 43, and both ends of the anti-slip grooves 43 have a set distance from the side inner wall 34;

[0070] Two arc-shaped arc-shaped portions 44 are provided on the lower side of the top plate body 41, a magnetic body 45 is provided between the two arc-shaped portions 44, an arc-shaped arc-shaped groove 46 is provided through the arc-shaped portion 44, an unlocking member 47 is hingedly provided on the outer end of the positioning rod 31, and unlocking portions 48 are provided on both outer sides of the unlocking member 47, and both outer sides of the unlocking member 47 are movably fitted to the inner side of the arc-shaped portion 44, and the unlocking portions 48 are movably fitted to the inner wall of the arc-shaped groove 46, and an elastic protrusion is provided on the outer inner wall of the arc-shaped groove 46;

[0071] When the unlocking member 47 is in a horizontal state, the positioning member 32 fixes the position of the positioning bar 29, the lower side of the unlocking portion 48 abuts against the upper side of the elastic protrusion, the top of the unlocking portion 48 abuts against the top of the arc groove 46, the unlocking member 47 fits against the bottom of the magnetic body 45, and the unlocking member 47 and the magnetic body 45 are magnetically attracted;

[0072] When the unlocking member 47 is in a tilted state, the locking column 37 and the positioning bar 29 are in a separated state, and the lower side of the unlocking portion 48 abuts against the bottom of the arc groove 46 .

[0073] The welding auxiliary system based on the semi-trailer frame provided by the present invention, when the semi-trailer frame is fully welded, firstly, the semi-trailer frame at this time is supported by the support column 3, and secondly, the assembly for supporting the worker composed of the middle plate body 4, the support column 5 and the lifting plate 7 can be moved in the movable groove 2, so as to move to a suitable position for welding; wherein the semi-trailer frame is usually not raised too high during the actual welding process, so it is necessary to open the movable groove 2 on the supporting bottom surface 1 (i.e., the concrete floor) so that the workers can have enough space when operating below; secondly, when the workers are actually welding, it is preferred that they sit on the lifting plate 7. The support plate 7 is on the support plate 7, so the operating comfort can be further improved; the support plate includes a connecting plate at the bottom and a rotating plate connected to the connecting plate, and the worker can rotate it when sitting on the rotating plate, so that when welding, the worker can weld the periphery when he is in the hollow part of the same semi-trailer frame; secondly, when welding the positions of the semi-trailer frames at different heights, the lifting mechanism can be used to lift the lifting plate 7 to a suitable position for welding, so that although the size of the semi-trailer frame is large, it can be welded after reaching the required height by controlling the lifting, without the need for workers to continuously squat or bend over for welding, and the operating effect is better.

[0074] During the welding process, the first arm 8 and the second arm 11 are both in a tilted and free state. At this time, the weight of the entire mobile structure is directly transferred to the supporting bottom surface 1 through the four supporting columns 5, so that the position stability of the supporting columns 5 can be stably maintained, and workers can fully ensure the position stability and welding safety when welding.

[0075] When the position needs to be moved, the worker only needs to step on the lower pressure plate 19, which lowers the height of the first linkage part 10 during its downward movement. At the same time, the lower side of the first linkage part 10 contacts the upper side of the free end of the second arm body 11, thereby also driving the second arm body 11 downward at the same time; until the first linkage part 10 finally fits the upper side of the second arm body 11, completing the lifting of the support column 5. At this time, the bottom of the moving wheel 6 (preferably a universal wheel) is higher than the support column 5, so the entire support structure can be moved very easily.

[0076] In the process of stepping on the lower pressure plate 19 downward, the lower side of the locking piece 14 will contact the locking portion 16 at a certain time. At this time, after the locking portion 16 acts on the lower side of the locking piece 14, it can drive the locking piece 14 to rotate and further stretch the first elastic piece 17; until the first linkage part 10 is just in a horizontal state, the locking mouth 15 moves to the locking portion 16, and the two are engaged. At this time, the connection between the first linkage part 10 and the second arm body 11 is completed, and there is no need to separately connect the first arm body 8 (or the first linkage part 10) and the second arm body 11; at the same time, in the process of stepping on the lower pressure plate 19 downward, the height of the moving wheel 6 can be lowered, and the supporting column 5 can be directly raised, which is simple and convenient.

[0077] After moving to the appropriate position, it is only necessary to rotate the unlocking arm 20 to separate the locking portion 16 from the locking port 15. At this time, the supporting column 5 moves downward under the action of gravity, and the first arm body 8 and the second arm body 11 rotate upward until the supporting column 5 finally hits the bottom of the movable groove 2. At this time, the position movement is completed; after releasing the unlocking arm 20, the side of the locking member 14 hits the end portion 18 under the action of the first elastic member 17, waiting for the next movement at this position.

[0078] When adjusting the height of the lifting plate 7, the worker first turns the handle on the unlocking member 47 downward, and the unlocking member 47 and the unlocking portion 48 move downward; during the downward movement of the unlocking member 47 and the unlocking portion 48, the inner wall of the arc groove 46 drives the unlocking portion 48 to rotate and also moves outward; while the unlocking portion 48 and the unlocking member 47 move outward, the positioning rod 31 and the positioning member 32 are also driven to move away from the positioning bar 29, so that there is a certain gap between the locking column 37 and the positioning bar 29, and the lifting plate 7 is in an empty state at this time;

[0079] If the height of the lifting plate 7 needs to be raised, a small pressure or no pressure is applied to the top of the lifting plate 7, and the horizontal plate 24 is raised under the pushing action of the thrust spring 25 and the pulling force of the tension spring 26, and the horizontal plate 24 also drives the lifting cylinder 23, the linkage cylinder 27 and the lifting plate 7 to rise;

[0080] When the lifting plate 7 is raised to a suitable height, the lifting plate 7 is kept at the height (for example, by pressing it with the hand), and then the handle of the unlocking member 47 is turned upward to restore the unlocking member 47 to a horizontal state; at this time, the top of the unlocking member 47 is magnetically attracted to the magnetic body 45, and the lower side of the unlocking portion 48 is limited by the elastic protrusion (the unlocking portion 48 can drive the elastic protrusion to undergo elastic deformation when passing through the elastic protrusion), and at the same time, the tangent line of the top part of the arc groove 46 is vertical, so even if the positioning rod 31 applies a large outward force to the unlocking member 47, the unlocking member 47 can still maintain its stable position;

[0081] In this state, the inner wall of the positioning member 32 is fitted against the inner wall of the positioning strip 29, or there is a very small gap between the inner wall of the positioning strip 29, but at this time, under the elastic force of the second elastic member 36, the two sides of the locking column 37 are respectively fitted against the locking groove 35b and the outer wall of the positioning strip 29; the side wall of the positioning strip 29 is in a vertical state, but the inner wall of the locking groove 35b is inclined, and the depth of the locking groove 35b is gradually reduced, so the upper and lower locking columns 37 on the same side can apply a locking effect to the positioning strip 29, so that the locking strip can neither be raised nor lowered, thereby achieving the purpose of fixing the position of the positioning strip 29; when the position of the positioning strip 29 is fixed, the positions of the linkage cylinder 27 and the lifting plate 7 are also fixed at this time, which is simple and convenient.

[0082] The cross section of the positioning strip 29 is an isosceles trapezoid, while the cross section of the positioning member 32 is a C-shape, so that when the positioning member 32 acts on both sides of the positioning strip 29, it can act on both sides of the positioning strip 29 more conveniently; secondly, during the lifting process of the linkage cylinder 27, the inner wall of the linkage cylinder 27 and the outer wall of the lifting cylinder 23 are both attached to the fixed cylinder 21, thereby improving the position stability of the linkage cylinder 27 and the lifting plate 7, and also improving the strength of the overall structure. In addition, the positioning member 32 applies a certain force to the positioning strip 29, and the force can be borne by the auxiliary column 40, further ensuring the service life of the equipment.

[0083] The anti-slipping parts at both ends of the locking column 37 are always movably located in the anti-slipping groove 43, wherein the shape of the anti-slipping groove 43 is also inclined (only for illustration in the figure), so even if the position of the locking column 37 changes, the locking column 37 can still maintain contact with the positioning member 32. When the positioning strip 29 is locked by the positioning member 32, the worker needs to use a tool to move the position of the locking column 37, and the locking column 37 is closer to the middle of the side inner wall 34 (that is, the locking column 37 is moved in the direction of compressing the second elastic member 36), and then the positioning member 32 is moved, and the height of the positioning strip 29 is locked by the locking column 37. In this embodiment, preferably, the second elastic member 36 and the positioning member 32 are both made of non-magnetic materials (for example, the positioning member 32 is made of copper, aluminum, plastic, etc., and the second elastic member 36 is made of elastic rubber material, which is only shown in the figure), and the locking column 37 is made of magnetic material (such as steel, iron, etc.). Then, when locking the positioning bar 29, first, the strong magnetic material block is placed in the middle of both sides of the positioning member 32. At this time, the locking column 37 is subjected to a strong suction force and compresses the second elastic member 36; then, after the unlocking member 47 is rotated to a horizontal state and the strong magnetic material block is removed, the second elastic member 36 moves the locking column 37 to be active.

[0084] In another embodiment, the lifting mechanism includes a gas pressure rod, the bottom of the gas pressure rod is connected to the middle plate body 4, and the top is connected to the lifting plate 7. The gas pressure rod is a conventional gas pressure rod for lifting seats, and it also includes an operating handle that can be used to control the gas pressure rod; since this structure is a conventional structure, it can be directly purchased on the market, and no further details are given here.

[0085] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A welding auxiliary system based on a semi-trailer frame, characterized in that: include: A supporting bottom surface (1), wherein a movable groove (2) is provided at the top of the supporting bottom surface (1), and a plurality of supporting columns (3) are provided on both sides of the movable groove (2), and the tops of all the supporting columns (3) are used to support half of the trailer frame; A middle plate body (4), the middle plate body (4) is rectangular, and four corners of the middle plate body (4) are vertically provided with support columns (5), and the middle plate body (4) is connected to the middle part of the support columns (5); Moving wheels (6), the moving wheels (6) being used to move the positions of all the supporting columns (5), and the moving wheels (6) are all located in the movable grooves (2); A positioning mechanism, the positioning mechanism being used to fix the position of the supporting column (5); A lifting plate (7), the lifting plate (7) being located above the middle plate body (4), and the lifting plate (7) being used to support workers; A lifting mechanism, the lifting mechanism being used to control the height of the lifting plate (7); The supporting column (5) comprises two first columns (5a) and two second columns (5b), the first column (5a) is hingedly provided with a first arm body (8) on its inner side, the free end of the first arm body (8) is obliquely provided with an inclined portion (9), a U-shaped first linkage portion (10) is provided between the free ends of the two inclined portions (9), and the bottom of the inclined portion (9) is connected to the first arm body (8); A second arm body (11) is hingedly provided on the inner side of the second column (5b) at the upper and lower sides, a second linkage part (12) is provided between the inner sides of the two second arm bodies (11), the bottoms of the first column (5a) and the second column (5b) are both provided with the moving wheel (6), and the lower side of the second arm body (11) is movably fitted to the lower side of the first linkage part (10); The first arm body (8) and the second arm body (11) include a first state and a second state; When the first arm body (8) and the second arm body (11) are in the first state, the first arm body (8), the second arm body (11) and the first linkage part (10) are all in a horizontal state, and the second arm body (11) is attached to the lower side of the first linkage part (10), the first arm body (8) and the second arm body (11) are fixedly connected, and the bottom of the moving wheel (6) is lower than the bottom of the supporting column (5); When the first arm body (8) and the second arm body (11) are in the second state, the first arm body (8) and the second arm body (11) are both in an inclined state, and the supporting column (5) abuts against the bottom of the movable groove (2); A U-shaped locking member (14) is hingedly provided between the outer sides of the two first linkage parts (10), the opening of the locking member (14) is downwardly facing, a locking opening (15) is provided on one side of the locking member (14) close to the hinged end of the second arm body (11), and a locking part (16) is provided on the outer side of the second arm body (11), and when the locking opening (15) is buckled with the locking part (16), the first arm body (8) and the second arm body (11) are in the first state; A first elastic member (17) which is continuously in an extended state is provided between the top of the first linkage portion (10) and the top of the locking member (14); the first elastic member (17) and the locking opening (15) are located on both sides of the locking member (14); The bottom of the locking member (14) is inclined, and an end portion (18) is further provided on the outer side of the first linkage portion (10), wherein the end portion (18) is lower than the hinge between the locking member (14) and the first linkage portion (10). When the first arm (8) and the second arm (11) are in the second state, the side of the locking member (14) provided with the locking opening (15) contacts the end portion (18), and when the first linkage portion (10) is rotated downward, the locking member (16) can act on the inclined portion (9) at the bottom of the locking member (14), thereby driving the locking member (14) to rotate and causing the first elastic member (17) to further extend.

2. The welding auxiliary system based on the semi-trailer frame according to claim 1 is characterized in that: A drag reduction column (13) is rotatably provided at the top of the free end of the second arm body (11), and the drag reduction column (13) movably contacts the lower side of the first linkage part (10).

3. The welding auxiliary system based on the semi-trailer frame according to claim 1 is characterized in that: A lower pressing plate (19) is arranged on the outer side of the first linkage part (10), and an unlocking arm (20) is arranged on the top of one side of the locking member (14).

4. The welding auxiliary system based on the semitrailer frame according to claim 1 is characterized in that: The lifting mechanism comprises a fixed cylinder (21) vertically arranged in the middle of the middle plate body (4), the fixed cylinder (21) is hollow, and lifting grooves (22) are vertically opened on both sides of the fixed cylinder (21), a lifting cylinder (23) is vertically movably arranged in the fixed cylinder (21), a horizontal plate (24) is horizontally arranged in the middle of the lifting cylinder (23), a thrust spring (25) is arranged between the bottom of the fixed cylinder (21) and the lower side of the horizontal plate (24), and a tension spring (26) is arranged between the top of the fixed cylinder (21) and the upper side of the horizontal plate (24); A linkage cylinder (27) is vertically movably arranged outside the fixed cylinder (21); an integral part (28) is arranged between the inner side of the linkage cylinder (27) and the outer side of the lifting cylinder (23); the integral part (28) is movably located in the lifting groove (22); the inner wall of the linkage cylinder (27) and the outer wall of the lifting cylinder (23) are movably fitted to the fixed cylinder (21); a positioning strip (29) is vertically arranged on the outer wall of the linkage cylinder (27); the cross section of the positioning strip (29) is an isosceles trapezoid, and the lower bottom of the cross section of the positioning strip (29) is connected to the linkage cylinder (27); A support frame (30) is also provided on the top of the middle plate body (4), and a positioning rod (31) is horizontally movably provided on the top of the support frame (30), both ends of the positioning rod (31) are located on the outside of the support frame (30), the longitudinal section of the positioning rod (31) is rectangular, and the outer wall of the positioning rod (31) is movably fitted into the opening on the support frame (30), and one end of the positioning rod (31) is provided with a positioning member (32) with a C-shaped cross section, the opening of the positioning member (32) faces the positioning strip (29), and the inner wall of the positioning member (32) includes a middle inner wall (33) and two inner walls located on the middle inner wall (33). Two side inner walls (34) on the side, two positioning grooves (35) in the shape of upper and lower mirror images are provided on the side inner walls (34), the positioning grooves (35) include a receiving groove (35a) and a locking groove (35b), the depth of the locking groove (35b) decreases as the distance from the middle of the side inner wall (34) increases, a second elastic member (36) which is continuously in a compressed state is arranged in the receiving groove (35a), a locking column (37) is movably arranged in the locking groove (35b), and the locking column (37) abuts against the free end of the second elastic member (36), the locking groove (35b) and the side of the positioning strip (29); A third elastic member (38) which is continuously in an extended state is arranged between a side of the support frame (30) away from the positioning member (32) and the positioning rod (31).

5. The welding auxiliary system based on the semi-trailer frame according to claim 4 is characterized in that: An auxiliary frame (39) is also vertically arranged on the top of the middle plate body (4), and an auxiliary column (40) is horizontally rotatably arranged on the top of the auxiliary frame (39), and the auxiliary column (40) contacts the side of the linkage cylinder (27) away from the positioning member (32). A top plate body (41) is arranged on the top of the support column (5), and a clearance hole (42) for the linkage cylinder (27) to movably pass through is provided in the middle of the top plate body (41), and anti-slip portions are provided on both sides of the locking column (37), and anti-slip grooves (43) are provided on both sides of the locking groove (35b), and the anti-slip portion is movably located in the anti-slip groove (43), and both ends of the anti-slip groove (43) have a set distance from the inner wall (34) of the side portion; Two arc-shaped arc-shaped portions (44) are arranged on the lower side of the top plate body (41), a magnetic body (45) is arranged between the two arc-shaped portions (44), an arc-shaped arc-shaped groove (46) is arranged through the arc-shaped portion (44), an unlocking member (47) is hingedly arranged on the outer end of the positioning rod (31) up and down, and both outer sides of the unlocking member (47) are provided with unlocking portions (48), both outer sides of the unlocking member (47) are movably fitted to the inner side of the arc-shaped portion (44), and the unlocking portion (48) is movably fitted to the inner wall of the arc-shaped groove (46), and the outer inner wall of the arc-shaped groove (46) is provided with an elastic protrusion; When the unlocking member (47) is in a horizontal state, the positioning member (32) fixes the position of the positioning bar (29), the lower side of the unlocking portion (48) abuts against the upper side of the elastic protrusion, the top of the unlocking portion (48) abuts against the top of the arc-shaped groove (46), the unlocking member (47) fits against the bottom of the magnetic body (45), and the unlocking member (47) and the magnetic body (45) are magnetically attracted to each other; When the unlocking member (47) is in a tilted state, the locking column (37) and the positioning bar (29) are in a separated state, and the lower side of the unlocking portion (48) abuts against the bottom of the arc-shaped groove (46).

6. The welding auxiliary system based on the semitrailer frame according to claim 1 is characterized in that: The lifting mechanism comprises a gas pressure rod, the bottom of which is connected to the middle plate body (4), and the top of which is connected to the lifting plate (7).

Images