CN210359936U

CN210359936U - Automatic welding machine for semi-trailer bottom plate

Info

Publication number: CN210359936U
Application number: CN201921234873.3U
Authority: CN
Inventors: 李宪领
Original assignee: Shandong Yuncheng Shenghui Machinery Manufacturing Co ltd
Current assignee: Shandong Shenghui Intelligent Robot Co.,Ltd.
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-04-21
Anticipated expiration: 2029-08-01

Abstract

The utility model provides a semitrailer bottom plate automatic weld machine, welder including frame and vertical setting, the frame includes the frame end beam that crossbeam and crossbeam both ends set up, all sets up the walking base in the bottom of every frame end beam, installs the walking wheel on the walking base, the bottom of walking base is equipped with and walks the matched with and indulges the slide rail that moves, indulges the side-mounting that moves the slide rail and has first rack, has first motor at the side fixed mounting of walking base, is equipped with first drive gear on the output shaft of first motor, and first drive gear cooperatees with first rack, and first motor start can drive the walking base and move on indulging the slide rail. The utility model has the advantages of: the utility model discloses saved operation personnel quantity, reduced workman intensity of labour, improved production speed and improved welding quality, guaranteed the production stability of welding product, also indirectly saved product cost simultaneously.

Description

Automatic welding machine for semi-trailer bottom plate

Technical Field

The utility model belongs to the technical field of the welding technique and specifically relates to a semitrailer bottom plate automatic weld machine.

Background

The welding of bottom plate is one very important, also the welding process that is indispensable in the production of trailer, and the manual welding work volume of traditional technology is very big, and the welding effect is poor, leads to workman's intensity of labour very high, and welding quality can't guarantee the uniformity simultaneously, and manual welding's production speed is very slow, needs to increase workman's quantity and comes balanced production speed, has increased manufacturing cost to a certain extent. The existing automatic welding machine is mainly provided with welding guns which are arranged obliquely, and the welding machines need to be stopped firstly when turning or arc welding is carried out, so that the welding quality and efficiency are influenced, and certain trouble is brought to the whole welding operation of the bottom plate.

Disclosure of Invention

In order to solve the problem, the utility model aims to provide a semitrailer bottom plate automatic weld machine has changed the characteristics of original welding machine mechanism, and the requirement of original welding process has been broken in the vertical setting of welder, has simplified welding machine mechanism, has reduced equipment cost, has improved welding quality and welding efficiency.

The utility model provides a technical scheme that its technical problem adopted is: the utility model relates to a semitrailer bottom plate automatic welding machine, which comprises a frame and a vertically arranged welding gun, wherein the frame comprises a cross beam and frame end beams arranged at two ends of the cross beam, a walking base is arranged at the bottom of each frame end beam, walking wheels are arranged on the walking base, a longitudinal sliding rail matched with the walking wheels is arranged at the bottom of the walking base, a first rack is arranged at the side of the longitudinal sliding rail, a first motor is fixedly arranged at the side of the walking base, a first driving gear is arranged on an output shaft of the first motor, the first driving gear is matched with the first rack, the first motor can be started to drive the walking base to move on the longitudinal sliding rail, a transverse sliding rail and a second rack are arranged at the front end of the cross beam, a transverse sliding plate matched with the transverse sliding rail is arranged on the transverse sliding rail, a second motor is fixedly arranged on the transverse sliding plate, and a second driving gear is arranged, the second driving gear is matched with the second rack, the electric welding machine is installed at the rear end of the cross beam, the wire feeder is installed on the upper side of the transverse sliding plate, the welding gun is installed on the front side of the transverse sliding plate through the lifting module, the lifting module comprises a first lead screw and a third motor which are vertically arranged, an output shaft of the third motor is connected with the first lead screw, a first nut is installed on the first lead screw in a matched mode, a first installation frame is fixedly connected to the front side of the first nut, a first installation seat is arranged at the bottom of the first installation frame, a rotary sleeve is vertically arranged in the first installation seat through a bearing, penetrates out of the bottom of the first installation frame through the first installation seat, the welding gun is installed in the rotary sleeve, a lifting adjusting structure is arranged on the upper portion of the welding gun, the lifting adjusting structure comprises a second installation frame, the second installation frame is fixed on the inner wall of the, the one end of second lead screw is worn out first mounting bracket and is connected rotatory handle, all is equipped with the guide bar in the both sides position department of second lead screw, and the cooperation is installed the second nut on the second lead screw, a side-mounting clamp splice of second nut, welder are located the clamp splice, rotate rotatory handle and can adjust the vertical height of welder in rotatory cover, stretch out fixed connection first synchronizing wheel on the rotatory cover of first mounting bracket, one side position department of first mounting bracket installs the second mounting bracket, is equipped with the fourth motor on the second mounting bracket, fixed connection second synchronizing wheel on the output shaft of fourth motor, link to each other through driving belt between second synchronizing wheel and the first synchronizing wheel, install welding seam tracking laser and anticollision sensor on the rotatory cover that stretches out first mounting bracket. Furthermore, a dovetail groove is formed in the first mounting seat corresponding to the position of the second mounting seat, a sliding block matched with the dovetail groove is arranged at the bottom of the second mounting seat, a first pull rod is fixedly mounted on one side of the second mounting seat, a threaded hole matched with the first pull rod is formed in the rear side wall of the first mounting seat, one end, penetrating out of the first mounting seat, of the first pull rod is connected with a first hand wheel, a second hand wheel is mounted on the periphery of the first pull rod between the first hand wheel and the first mounting seat, a nut matched with the first pull rod is arranged on the second hand wheel, and the second hand wheel can be made to contact with the first mounting seat by rotating the second hand wheel. Furthermore, a dovetail groove is formed in the first mounting seat corresponding to the position of the second mounting seat, a sliding block matched with the dovetail groove is arranged at the bottom of the second mounting seat, a belt tightening device is arranged at one side position of the second mounting seat and can adjust the position of the second mounting seat in the dovetail groove, so that the tightness degree of a transmission belt is adjusted, the belt tightening device comprises a U-shaped frame, the U-shaped frame is vertically arranged on the rear side wall of the first mounting frame, a first through hole is horizontally formed in the rear side plate of the U-shaped frame, a first pull rod is arranged in the first through hole in a matched mode, one end of the first pull rod penetrates through the rear side wall of the first mounting frame and is fixedly connected with the second mounting seat, the other end of the first pull rod penetrates through a first through hole and is fixedly connected with a handle, a positioning sleeve is vertically arranged on the first pull rod positioned in the U-shaped frame, a third driving gear and a wire wheel are coaxially arranged in the positioning sleeve at the position where the positioning sleeve is connected with the first pull rod, a slide way is horizontally arranged in the first pull rod corresponding to the position of the third driving gear, a third rack matched with the third driving gear is arranged in the slide way, both ends of the third rack are respectively provided with a fixed block, a mounting groove is arranged in the first pull rod close to one end of the handle and communicated with the slide way, a positioning plate matched with the slide way is arranged in the mounting groove, one side surface of the positioning plate is connected with the fixed block, the other side surface of the positioning plate is fixedly connected with a second pull rod, the second pull rod penetrates out of the handle through the mounting groove, a first spring is arranged on the periphery of the second pull rod in the mounting groove, the first spring always has the tendency of leading the positioning plate to be far away from the handle, mounting plates are arranged in the positioning sleeves corresponding to the upper and lower end positions of the wire wheel, a second spring and a wedge-shaped positioning block are arranged on each mounting, the upper side plate and the lower side plate of the U-shaped frame are internally provided with wedge-shaped positioning teeth matched with the wedge-shaped positioning teeth, the lower ends of the second springs and the wedge-shaped positioning blocks are always positioned in the positioning sleeves, the second springs always have the tendency that the wedge-shaped positioning blocks are close to the wedge-shaped positioning teeth, second through holes are formed in each mounting plate, connecting wires are fixedly arranged on the two sides of each wire wheel, and the connecting wires are equally divided into the bottom positions which are fixedly connected to the wedge-shaped positioning blocks through the second through holes. Furthermore, the one end that the second pull rod stretches out the handle articulates there is the pull ring, and the tip of handle is seted up and is laid the recess with pull ring matched with.

The utility model has the advantages of: a semitrailer bottom plate automatic weld machine, replaced original manual welding operation, saved operation personnel quantity, reduced workman intensity of labour, improved production speed and improved welding quality, guaranteed the production stability of welding product, also indirectly saved product cost simultaneously. Automatic weld machine changed the characteristics of original welding machine mechanism, the welding machine need not stop at the in-process that the welding turned round in the vertical setting of welder, enable the welding seam more pleasing to the eye, also avoided the risk that welder blockked up, broken original welding process's requirement, simplified welding machine mechanism, reduced equipment cost, improved welding quality and welding efficiency. The production structure of the workshop can be greatly optimized, the overall competitiveness of an enterprise is improved, the production period of a product is shortened, the quality of the product is improved, and the welding mechanism is very practical.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view taken from the direction A of FIG. 1;

FIG. 3 is a view from B-B in FIG. 2;

FIG. 4 is a schematic structural view of the belt tightening device of the present invention;

FIG. 5 is an enlarged view taken along line C-C of FIG. 3;

FIG. 6 is an enlarged partial view of I of FIG. 4;

FIG. 7 is an operational view of the belt tensioner returning to the initial tension state;

fig. 8 is a view from direction D in fig. 6.

In the figure, in a transverse beam 2, a rack end beam 3, a walking base 4, a walking wheel 5, a longitudinal sliding rail 6, a first rack 7, a first motor 8, a first driving gear 9, a transverse sliding rail 10, a second rack 11, a second motor 12, a second driving gear 13, an electric welding machine 14, a wire feeder 15, a welding gun 16, a first lead screw 17, a third motor 18, a first nut 19, a first mounting rack 20, a first mounting seat 21, a bearing 22, a rotating sleeve 23, a second mounting rack 24, a second lead screw 25, a rotating handle 26, a guiding rod 27, a first nut 28, a clamping block 29, a first synchronous wheel 30, a second mounting seat 31, a fourth motor 32, a second synchronous wheel 33, a welding seam tracking laser 35 anti-collision sensor 36, a transverse sliding plate 37, a sliding block 39, a sliding block 40, a first through hole 41, a first pull rod 42, a positioning sleeve 44 The second pull rod 52 of the position plate 51, the first spring 53, the mounting plate 54, the second spring 55, the wedge-shaped positioning tooth 57 of the wedge-shaped positioning block 56, the second through hole 58, the connecting line 59, the pull ring 60, the first hand wheel 62 and the second hand wheel 62 are arranged in the groove 61.

Detailed Description

A semitrailer bottom plate automatic weld machine, as shown in fig. 1, welder 15 including frame and vertical setting, the frame includes frame end beam 2 that crossbeam 1 and 1 both ends of crossbeam set up, all sets up walking base 3 in the bottom of every frame end beam 2, installs walking wheel 4 on the walking base 3, the bottom of walking base 3 is equipped with and walks 4 matched with longitudinal sliding rail 5 with the walking wheel, and the side-mounting who moves sliding rail 5 longitudinal has first rack 6, has first motor 7 at the side fixed mounting of walking base 3, is equipped with first drive gear 8 on first motor 7's the output shaft, and first drive gear 8 cooperatees with first rack 6, and first motor 7 starts the energy band and moves walking base 3 and move on longitudinal sliding rail 5.

The front end of the cross beam 1 is provided with a transverse sliding rail 9 and a second rack 10, the transverse sliding rail 9 is provided with a transverse sliding plate 36 matched with the transverse sliding rail 9, the transverse sliding plate 36 is fixedly provided with a second motor 11, an output shaft of the second motor 11 is provided with a second driving gear 12, the second driving gear 12 is matched with the second rack 10, and the second motor 11 is started to drive the transverse sliding plate 36 to move on the transverse sliding rail 9.

The electric welding machine 13 is installed to the rear end of crossbeam 1, and a wire feeder 14 is installed to sideslip slide 36 upside, and welder 15 is installed through lifting module to the front side of sideslip slide 36, lifting module includes vertical first lead screw 16 and the third motor 17 that sets up, and the output shaft of third motor 17 is connected with first lead screw 16, and first nut 18 is installed in the cooperation on the first lead screw 16, and the first mounting bracket 19 of the front side fixedly connected with of first nut 18, third motor 17 start-up can drive first mounting bracket 19 and carry out vertical migration.

As shown in fig. 2 and 3, a first mounting seat 20 is provided at the bottom of the first mounting frame 19, a rotating sleeve 22 is vertically provided in the first mounting seat 20 through a bearing 21, the rotating sleeve 22 passes through the first mounting seat 20 and out of the bottom of the first mounting frame 19, and the welding gun 15 is installed in the rotating sleeve 22. The upper portion of welder 15 is equipped with the lift adjustment structure, the lift adjustment structure includes second mounting bracket 23, and second mounting bracket 23 is fixed on the inner wall of first mounting bracket 19, the vertical second lead screw 24 that is equipped with in the second mounting bracket 23, first mounting bracket 19 and rotatory handle 25 are worn out to the one end of second lead screw 24, all is equipped with guide bar 26 in the both sides position department of second lead screw 24, and second nut 27 is installed in the cooperation on the second lead screw 24, a side-mounting clamp splice 28 of second nut 27, welder 15 are located clamp splice 28, rotate rotatory handle 25 and can adjust the vertical height of welder 15 in swivel mount 22.

The rotary sleeve 22 extending out of the first mounting seat 20 is fixedly connected with a first synchronizing wheel 29, a second mounting seat 30 is arranged at one side position of the first mounting seat 20, a fourth motor 31 is arranged on the second mounting seat 30, a second synchronizing wheel 32 is fixedly connected to an output shaft of the fourth motor 31, the second synchronizing wheel 32 is connected with the first synchronizing wheel 29 through a transmission belt 33, a weld tracking laser 34 and an anti-collision sensor 35 are arranged on the rotary sleeve 22 extending out of the first mounting seat 19, and the fourth motor 31 is started to enable the rotary sleeve 22 and the weld tracking laser 34 and the anti-collision sensor 35 at the periphery of the rotary sleeve 22 to rotate under the condition that the welding gun 15 does not rotate.

The welding gun on the original automatic welding machine has the actions of longitudinal walking, transverse walking, welding gun lifting, welding gun rotating, laser rotating and the like. Compared with the traditional welding machine, the utility model discloses it is rotatory to have reduced welder, saves original welder rotary mechanism and reduces, and original welder becomes 10-45 degrees contained angles for the work piece welding seam and changes into welder for the work piece and be the vertical direction welding, though violated welding process but can simplify the mechanism, improves welding quality and work efficiency.

In the design of the equipment, the prior international most advanced linear array laser detection system can be adopted to capture the position of a weld joint at the early stage with high precision, and the acquired data is dynamically transmitted to a central computer control system in real time. The control system discards a common dynamic position algorithm, adopts a more practical rolling algorithm, greatly reduces the data processing capacity of a computer, improves the reaction speed of the system, solves the algorithm bottleneck in the welding process, enables the dynamic operation speed limit to reach amazing 2 meters per minute which is far greater than the welding limit of 1.2 meters per minute of a welding machine, and enables the machine to have sufficient upgrading space. In addition, a more practical damping algorithm is added in the algorithm, and strong light and static interference in the welding process are effectively eliminated.

The mechanism adopts a gantry three-dimensional positioning mechanical structure, and the position is controlled by a computer in real time. In the welding process, the computer updates the three-dimensional position in time so as to realize the three-dimensional dynamic positioning of the welding gun. And the machine mouth adopts a post-processing mode, so that the positions of the laser detection mechanism and the welding gun can be separated by a certain distance. The damage of the laser mechanism caused by the strong light interference and welding spatter of welding is avoided.

This mechanism supports conventional bottom plate welding, also supports special step welding simultaneously, can also intelligent skip the structure hole, can turn round automatically, and the in-process that turns round need not stop the welding machine, makes the welding seam more pleasing to the eye, has also avoided welder to block up the risk.

The utility model discloses the benefit that is different from manual welding lies in following several points: 1, the structure saves staff, indirectly saves product cost, and saves at least two professional welders with professionalism. And 2, the labor intensity of workers is reduced, and the workers only need to supervise the conditions of the welding gun to prevent accidents, so that the workers do not need to have very high professional skills, and can find qualified workers more easily. 3, the production speed is increased, and the speed of the mechanism which can reach 1.2 m/min depends on the speed of a welding gun, which is the speed which can not be reached by manpower absolutely, and is a factor which can reduce the production cost. 4 the quality is stable, and the computer welding is adopted, so that the operation is stable, and the fatigue, emotion, technical level and the like of a plurality of uncertain factors caused by manual welding can not occur, thereby ensuring the stability of the product. 5 the appearance is pleasing to the eye, improves the product and sells the looks, because adopt automatic weld, the data is stable, and welder is stable, so the welding seam when welding is more than artifical pleasing to the eye.

In order to ensure the transmission accuracy and more smoothly rotate the welding gun 15, the seam tracking laser 34 and the anti-collision sensor 35 during the welding operation, the external rotating sleeve 22 preferably adopts the synchronizing wheel and the transmission belt 33 as transmission components, in order to adjust the tension of the transmission belt 33 and ensure the normal transmission between the second synchronizing wheel 32 and the first synchronizing wheel 29, as shown in fig. 5, a dovetail groove 37 is formed in the first mounting seat 20 corresponding to the position of the second mounting seat 30, and a slide block 38 matched with the dovetail groove 37 is arranged at the bottom of the second mounting seat 30. As shown in fig. 3, a first pull rod 41 is fixedly installed on one side of the second installation base 30, a threaded hole matched with the first pull rod 41 is formed in the rear side wall of the first installation frame 19, one end of the first pull rod 41 penetrating out of the first installation frame 19 is connected with a first hand wheel 61, a second hand wheel 62 is installed on the periphery of the first pull rod 41 between the first hand wheel 61 and the first installation frame 19, a nut matched with the first pull rod 41 is arranged on the second hand wheel 62, the second hand wheel 62 is rotated to enable the first hand wheel to be in contact with the first installation frame 19, the tension of the transmission belt 33 can be adjusted by rotating the first pull rod 41, the installation firmness of the first pull rod 41 can be further guaranteed when the second hand wheel 62 on the first pull rod 41 is in contact with the rear side wall of the first installation frame 19, and slipping of the first pull rod 41 caused by vibration or other reasons can be avoided.

Preferably, in order to adjust the tension of the transmission belt 33, a belt tightening device is provided at a position on one side of the second mounting seat 30, as shown in fig. 4, and the belt tightening device can adjust the position of the second mounting seat 30 in the dovetail groove 37, thereby adjusting the tightness of the transmission belt 33.

As shown in fig. 6, the belt tightening device includes a U-shaped frame 39, the U-shaped frame 39 is vertically installed on the rear side wall of the first installation frame 19, a first through hole 40 is horizontally formed in the rear side plate of the U-shaped frame 39, a first pull rod 41 is installed in the first through hole 40 in a matched manner, one end of the first pull rod 41 penetrates through the rear side wall of the first installation frame 19 and is fixedly connected with the second installation seat 30, and the other end of the first pull rod 41 penetrates through the first through hole 40 and is fixedly connected with the handle 42. Pulling the handle 42 can drive the first pull rod 41 to move in the first through hole 40, so as to drive the second mounting seat 30 to slide in the dovetail groove 37, change the position of the second mounting seat 30 on the first mounting seat 20, and further adjust the tightness of the transmission belt 33.

The positioning sleeve 43 is vertically arranged on the first pull rod 41 positioned inside the U-shaped frame 39, the third driving gear 44 and the wire wheel 45 are coaxially arranged inside the positioning sleeve 43 at the position where the positioning sleeve 43 is connected with the first pull rod 41, a slide way 46 is horizontally arranged in the first pull rod 41 corresponding to the position of the third driving gear 44, a third rack 47 matched with the third driving gear 44 is arranged in the slide way 46, fixing blocks 48 are arranged at two ends of the third rack 47, the fixing blocks 48 can ensure that when one end of the third rack 47 enters the positioning sleeve 43, the fixing blocks 48 can be always positioned in the slide way 46, and the matching of the third rack 47 and the third driving gear 44 cannot be influenced.

An installation groove 49 is formed in the first pull rod 41 close to one end of the handle 42, the installation groove 49 is communicated with the slideway 46, a positioning plate 50 matched with the installation groove 49 is arranged in the installation groove 49, one side surface of the positioning plate 50 is connected with a fixed block 48, the other side surface of the positioning plate 50 is fixedly connected with a second pull rod 51, and the second pull rod 51 penetrates out of the handle 42 through the installation groove 49. A first spring 52 is installed on the periphery of the second pull rod 51 located in the installation groove 49, the first spring 52 always tends to make the positioning plate 50 away from the handle 42, the second pull rod 51 is pulled to make the positioning plate 50 compress the first spring 52, and the positioning plate 50 drives the fixing block 48 and the third rack 47 to move for a certain distance in the slide way 46, so as to drive the third driving gear 44 to rotate.

Corresponding to the upper and lower both ends position department of line wheel 45, all be equipped with mounting panel 53 in position sleeve 43, all install second spring 54 and wedge locating piece 55 on every mounting panel 53, corresponding to the position of wedge locating piece 55, all be equipped with rather than matched with wedge locating tooth 56 in the upper and lower both sides inboard of U type frame 39, the lower extreme of second spring 54 and wedge locating piece 55 all is located the position sleeve 43 all the time, and second spring 54 has the trend that makes wedge locating piece 55 be close wedge locating tooth 56 all the time, has all seted up second through-hole 57 on every mounting panel 53, and the both sides rigidity of line wheel 45 is equipped with connecting wire 58, connecting wire 58 is equallyd divide and is do not via the bottom position of second through-hole 57 fixed connection to wedge locating piece 55.

When the belt tightening device is used to adjust the tightness of the transmission belt 33, as shown in fig. 6, at this time, the distance that the whole first pull rod 41 extends out of the rear side wall of the first installation frame 19 is longest, that is, the distance between the second synchronizing wheel 32 in the second installation seat 30 and the first synchronizing wheel 29 is shortest, the transmission belt 33 is in the loosest state, when the transmission belt 33 needs to be tightened, only the handle 42 needs to be pulled manually, the first pull rod 41 is moved rightwards along the first through hole 40 in the direction shown in fig. 5, during the moving process, the wedge-shaped positioning block 55 gradually compresses the second spring 54 into the positioning sleeve 43 under the pulling force, at the moment that the wedge-shaped positioning block 55 is about to be separated from one of the wedge-shaped positioning teeth 56, the second spring 54 pushes the wedge-shaped positioning block 55 to be matched with the inclined surface of the next wedge-shaped positioning tooth 56, so as to complete the positioning of the positioning sleeve 43 and the first pull rod 41, i.e., a short section of the drive belt 33 is simultaneously tensioned, and if it is necessary to continue to tension the drive belt 33, the above steps are repeated to move the first pull rod 41 to the right to the desired tension state.

When the transmission belt 33 needs to be replaced or the tightness of the transmission belt 33 needs to be adjusted again, as shown in fig. 7, the second pull rod 51 needs to be pulled to move rightwards, so that the positioning plate 50 compresses the first spring 52, the positioning plate 50 drives the fixed block 48 and the third rack 47 to slide rightwards for a certain distance in the slide way 46, the third rack 47 drives the third driving gear 44 to rotate anticlockwise in the sliding process, the third driving gear 44 winds and tightens the connecting wire 58 thereon, the connecting wire 58 pulls the wedge-shaped positioning block 55 to move downwards against the elastic force of the second spring 54, at this time, the wedge-shaped positioning block 55 and the wedge-shaped positioning teeth 56 on both sides are not blocked mutually, the handle 42 is pushed leftwards, so that the positioning sleeve 43 and the first pull rod 41 can move leftwards to the initial position, at this time, the transmission belt 33 is in the loosest state, and then the second pull rod 51 is released, so that, the wedge-shaped positioning block 55 is matched and positioned with the wedge-shaped positioning teeth 56 again, so that the positioning function in the subsequent tensioning operation can be realized.

Preferably, in order to facilitate stretching of the second pull rod 51, as shown in fig. 8, a pull ring 59 is hinged to one end of the second pull rod 51 extending out of the handle 42, and a placement groove 60 matched with the pull ring 59 is formed at an end of the handle 42. When the second pull rod 51 needs to be pulled, the pull ring 59 can be rotated out of the position of the handle 42 so as to facilitate the stretching operation of the second pull rod 51, and when the second pull rod 51 does not need to be stretched, the pull ring 59 can be rotated and retracted into the placing groove 60 so as to avoid unnecessary troubles caused by mistaken touch in the tensioning operation.

Technical scheme of the utility model not be restricted to the utility model the within range of embodiment. The technical contents not described in detail in the present invention are all known techniques.

Claims

1. The utility model provides a semitrailer bottom plate automatic weld machine, includes welder (15) of frame and vertical setting, its characterized in that: the frame comprises a cross beam (1) and frame end beams (2) arranged at two ends of the cross beam (1), a walking base (3) is arranged at the bottom of each frame end beam (2), walking wheels (4) are installed on the walking base (3), longitudinal moving sliding rails (5) matched with the walking wheels (4) are arranged at the bottom of the walking base (3), first racks (6) are installed on the side surfaces of the longitudinal moving sliding rails (5), a first motor (7) is fixedly installed on the side surfaces of the walking base (3), a first driving gear (8) is arranged on an output shaft of the first motor (7), the first driving gear (8) is matched with the first racks (6), the first motor (7) can be started to drive the walking base (3) to move on the longitudinal moving sliding rails (5), a transverse moving sliding rail (9) and a second rack (10) are arranged at the front end of the cross beam (1), and a transverse sliding plate (36) matched with the transverse moving sliding rail (9) is installed on the transverse moving sliding rail (9, a second motor (11) is fixedly installed on the transverse moving sliding plate (36), a second driving gear (12) is arranged on an output shaft of the second motor (11), the second driving gear (12) is matched with the second rack (10), an electric welding machine (13) is installed at the rear end of the cross beam (1), a wire feeding machine (14) is installed on the upper side of the transverse moving sliding plate (36), a welding gun (15) is installed on the front side of the transverse moving sliding plate (36) through a lifting module, the lifting module comprises a first lead screw (16) and a third motor (17) which are vertically arranged, an output shaft of the third motor (17) is connected with the first lead screw (16), a first nut (18) is installed on the first lead screw (16) in a matched mode, a first installation frame (19) is fixedly connected to the front side of the first nut (18), a first installation seat (20) is arranged at the bottom of the first installation frame (19), and a rotating sleeve (22) is vertically arranged in the first installation, the rotary sleeve (22) penetrates out of the bottom of the first mounting frame (19) through the first mounting seat (20), the welding gun (15) is mounted in the rotary sleeve (22), a lifting adjusting structure is arranged on the upper portion of the welding gun (15), the lifting adjusting structure comprises a second mounting frame (23), the second mounting frame (23) is fixed on the inner wall of the first mounting frame (19), a second lead screw (24) is vertically arranged in the second mounting frame (23), one end of the second lead screw (24) penetrates out of the first mounting frame (19) and is connected with a rotary handle (25), guide rods (26) are arranged at positions on two sides of the second lead screw (24), a second nut (27) is mounted on the second lead screw (24) in a matched mode, a clamping block (28) is mounted on one side of the second nut (27), the welding gun (15) is located in the clamping block (28), and the vertical height of the welding gun (15) in the rotary sleeve (22) can be adjusted by rotating the rotary handle (25), fixedly connected with a first synchronizing wheel (29) on a rotating sleeve (22) extending out of a first mounting seat (20), a second mounting seat (30) is mounted at one side position of the first mounting seat (20), a fourth motor (31) is arranged on the second mounting seat (30), a second synchronizing wheel (32) is fixedly connected on an output shaft of the fourth motor (31), the second synchronizing wheel (32) is connected with the first synchronizing wheel (29) through a transmission belt (33), and a welding seam tracking laser (34) and an anti-collision sensor (35) are mounted on the rotating sleeve (22) extending out of a first mounting frame (19).

2. The automatic semitrailer floor welding machine of claim 1, characterized in that: corresponding to the position of second mount pad (30), seted up dovetail (37) in first mount pad (20), the bottom of second mount pad (30) be equipped with dovetail (37) matched with slider (38) one side fixed mounting of second mount pad (30) has first pull rod (41), set up on the rear side wall of first mounting bracket (19) with first pull rod (41) matched with screw hole, the one end that first pull rod (41) were worn out first mounting bracket (19) is connected with first hand wheel (61), installs second hand wheel (62) in first pull rod (41) periphery between first hand wheel (61) and first mounting bracket (19), is equipped with on second hand wheel (62) with first pull rod (41) matched with nut, rotates second hand wheel (62) and enables it and first mounting bracket (19) contact.

3. The automatic semitrailer floor welding machine of claim 1, characterized in that: corresponding to the position of the second mounting seat (30), a dovetail groove (37) is formed in the first mounting seat (20), a sliding block (38) matched with the dovetail groove (37) is arranged at the bottom of the second mounting seat (30), a belt tightening device is arranged at one side position of the second mounting seat (30), the position of the second mounting seat (30) in the dovetail groove (37) can be adjusted through the belt tightening device, the tightness degree of the transmission belt (33) is adjusted through the belt tightening device, the belt tightening device comprises a U-shaped frame (39), the U-shaped frame (39) is vertically arranged on the rear side wall of the first mounting seat (19), a first through hole (40) is horizontally formed in the rear side plate of the U-shaped frame (39), a first pull rod (41) is installed in the first through hole (40) in a matched mode, one end of the first pull rod (41) penetrates through the rear side wall of the first mounting seat (19) and is fixedly connected with the second mounting seat (30), the other end of the first pull rod (41) penetrates through the first through hole (40) to be fixedly connected with the handle (42), a positioning sleeve (43) is vertically arranged on the first pull rod (41) positioned in the U-shaped frame (39), a third driving gear (44) and a wire wheel (45) are coaxially arranged in the positioning sleeve (43) at the position where the positioning sleeve (43) is connected with the first pull rod (41), a slide way (46) is horizontally arranged in the first pull rod (41) corresponding to the position of the third driving gear (44), a third rack (47) matched with the third driving gear (44) is arranged in the slide way (46), fixing blocks (48) are arranged at two ends of the third rack (47), a mounting groove (49) is formed in the first pull rod (41) close to one end of the handle (42), the mounting groove (49) is communicated with the slide way (46), and a positioning plate (50) matched with the mounting groove (49) is arranged in the mounting groove (49), one side of the positioning plate (50) is connected with the fixing block (48), the other side of the positioning plate (50) is fixedly connected with a second pull rod (51), the second pull rod (51) penetrates out of the handle (42) through a mounting groove (49), a first spring (52) is installed on the periphery of the second pull rod (51) in the mounting groove (49), the first spring (52) always tends to enable the positioning plate (50) to be far away from the handle (42), mounting plates (53) are arranged in the positioning sleeve (43) corresponding to the upper end and the lower end of the wire wheel (45), a second spring (54) and a wedge-shaped positioning block (55) are installed on each mounting plate (53), wedge-shaped positioning teeth (56) matched with the positioning plate are arranged in the upper side plate and the lower side plate of the U-shaped frame (39) and the lower ends of the second spring (54) and the wedge-shaped positioning block (55) are always located in the positioning sleeve (43), the second spring (54) always has the tendency that makes wedge locating piece (55) be close to wedge locating tooth (56), has all seted up second through-hole (57) on every mounting panel (53), and the both sides rigidity of line wheel (45) is equipped with connecting wire (58), connecting wire (58) are equallyd divide and are do not via second through-hole (57) fixed connection to the bottom position of wedge locating piece (55).

4. The automatic semitrailer floor welding machine of claim 3, characterized in that: one end of the second pull rod (51) extending out of the handle (42) is hinged with a pull ring (59), and the end part of the handle (42) is provided with a placement groove (60) matched with the pull ring (59).