阅读说明：本技术 工程机械车辆部件焊接工装及焊接工艺 (Engineering machinery vehicle part welding tool and welding process ) 是由 苗树林 傅海龙 李海斌 范世轩 于 2021-07-19 设计创作，主要内容包括：本发明涉及工程机械车辆制造的领域,尤其是涉及一种工程机械车辆部件焊接工装,其包括底架,所述底架上连接有支撑架,所述支撑架上设置有用于装夹结构件的装夹机构,所述装夹机构包括同心定位部、前端定位部与中部定位部。本发明还涉及一种使用上述工程机械车辆部件焊接工装的焊接工艺,本发明具有便于工程机械车辆部件的焊接的效果。(The invention relates to the field of engineering machinery vehicle manufacturing, in particular to an engineering machinery vehicle part welding tool which comprises a bottom frame, wherein a supporting frame is connected onto the bottom frame, a clamping mechanism for clamping a structural part is arranged on the supporting frame, and the clamping mechanism comprises a concentric positioning part, a front end positioning part and a middle positioning part. The invention also relates to a welding process using the engineering machinery vehicle part welding tool, and the welding process has the effect of facilitating the welding of the engineering machinery vehicle part.)

1. The utility model provides an engineering machine tool vehicle part welding frock which characterized in that: comprises an underframe (100), a support frame (110) is connected on the underframe (100), a clamping mechanism (200) for clamping a structural part is arranged on the support frame (110),

the clamping mechanism (200) comprises a concentric positioning part (210), a front end positioning part (220) and a middle positioning part (230);

the concentric locator (210) includes a dump arm locator assembly (211) and a dump arm concentric assembly (212),

the unloading arm positioning assemblies (211) are used for positioning the unloading arms (001) and are arranged in one-to-one correspondence with the unloading arms (001), each unloading arm positioning assembly (211) comprises at least two unloading arm blocking parts (2111) fixedly connected with the support frame (110) and at least one unloading arm abutting part (2112) movably connected with the support frame (110), at least two unloading arm blocking parts (2111) are abutted against the same side face of the corresponding unloading arm (001), at least one unloading arm abutting part (2112) is used for abutting against a side face of the unloading arm (001), which is far away from the unloading arm blocking part (2111),

the concentric assembly of the unloading arm (212) comprises an unloading arm supporting seat (2121) fixedly connected with the supporting frame (110), an unloading arm concentric shaft (2122) penetrating two unloading arm (001) through holes is placed in the unloading arm supporting seat (2121), and an unloading arm pressing piece (2123) used for abutting against the unloading arm concentric shaft (2122) is detachably connected to the unloading arm supporting seat (2121);

the front end positioning part (220) comprises a supporting positioning component (221), a connecting positioning component (222) and a buckle seat positioning component (223),

the supporting and positioning assembly (221) comprises a support mounting plate (2211) fixedly connected with the supporting frame (110), the support mounting plate (2211) is used for being detachably connected with the bottom support (014),

the connecting and positioning component (222) comprises a connecting piece mounting plate (2221) fixedly connected with the support frame (110), the connecting piece mounting plate (2221) is used for supporting the second connecting piece (004), the connecting piece mounting plate (2221) is fixedly connected with a connecting piece limiting plate (2222) which is used for being abutted against the side edge of the second connecting piece (004), a positioning groove (2223) for positioning the third connecting piece (005) is arranged on the connecting piece limiting plate (2222),

the buckle seat positioning component (223) comprises a buckle seat positioning part (2231) used for supporting the safety buckle seat (012), and the shape of the buckle seat positioning part (2231) is matched with the safety buckle seat (012);

the middle positioning part (230) comprises a square tube positioning assembly (231) and a welding part positioning assembly (232),

the square tube positioning assembly (231) comprises a square tube limiting rod (2311) and a square tube supporting plate (2312), the square tube limiting rod (2311) is connected with the supporting frame (110), the square tube limiting rod (2312) is fixedly connected with the square tube supporting plate (2311), the square tube limiting rod (2311) and the square tube supporting plate (2312) are used for being abutted against a connecting square tube (007),

welding part locating component (232) include with support frame (110) fixed connection's part locating piece (2321), part locating piece (2321) are used for supporting welding part (011) and laminate with the appearance of welding part (011), part locating piece (2321) fixedly connected with is used for with part gag lever post (2322) of welding part (011) side butt.

2. The engineering machinery vehicle part welding tool according to claim 1, characterized in that: the concentric positioning part (210) further comprises a casting body concentric assembly (213), the casting body concentric assembly (213) comprises casting body concentric shafts (2132) which are arranged in the through holes of the two casting bodies (002) in a penetrating mode, and the casting body concentric shafts (2132) are connected with the supporting frame (110).

3. The engineering machinery vehicle part welding tool according to claim 2, characterized in that: the concentric positioning part (210) further comprises an auxiliary concentric assembly (214), the auxiliary concentric assembly (214) comprises a casting body concentric block (2142) which is arranged in the other through hole of the casting body (002) in a penetrating mode, and the casting body concentric block (2142) is movably connected with the support frame (110).

4. The engineering machinery vehicle part welding tool according to claim 3, characterized in that: the square tube limiting rod (2311) is rotatably connected with the support frame (110).

5. The engineering machinery vehicle part welding tool according to claim 4, characterized in that: the base frame (100) is rotatably connected with the support frame (110), and a driving motor (330) for driving the support frame (110) to rotate is arranged on the base frame (100).

6. The engineering machinery vehicle part welding tool according to claim 4, characterized in that: the base frame (100) is movably connected with the support frame (110), and a driving mechanism (300) used for driving the support frame (110) to move is arranged on the base frame (100).

7. The engineering machinery vehicle part welding tool of claim 6, characterized in that: the driving mechanism (300) comprises a lifting part (310), the lifting part (310) comprises a lifting plate (312) connected with the base frame (100) in a sliding mode in the vertical direction, and the lifting plate (312) is connected with the supporting frame (110).

8. The engineering machinery vehicle part welding tool of claim 7, characterized in that: the lifting plate (312) is rotatably connected with the support frame (110), the driving mechanism (300) further comprises a rotating part (320), the rotating part (320) comprises two groups of wire coil assemblies (321), the two groups of wire coil assemblies (321) are respectively positioned on two sides of the support frame (110), each wire coil assembly (321) comprises a wire barrel (3212) rotatably connected with the chassis (100), a wire rope (3213) is wound on each wire barrel (3212), one end of each wire rope (3213) is fixedly connected with each wire barrel (3212), and the other end of each wire rope is fixedly connected with the side edge of the support frame (110).

9. A welding process, characterized in that: the welding tool for the engineering machinery vehicle part as claimed in claim 5 or 8, comprising the following steps:

s1: connecting and positioning the bottom, and placing a bottom support piece (014) and a second connecting piece (004) into the tool; the bottom support (014) is placed on the support mounting plate (2211), the bottom support (014) is fixedly connected with the support mounting plate (2211) through bolts, and the second connecting piece (004) is placed on the connecting piece mounting plate (2221) and is tightly propped against the connecting piece limiting plate (2222);

s2, connecting and positioning the main frame; placing an unloading arm (001) and a casting body (002) into a tool, enabling the unloading arm (001) to be tightly attached to an unloading arm stopper (2111) and driving an unloading arm stopper (2112) to abut against the unloading arm (001), arranging a bolt sleeve (015) in the unloading arm (001), placing an unloading arm concentric shaft (2122) on an unloading arm supporting seat (2121) through two bolt sleeves (015), connecting an unloading arm pressing piece (2123) with the unloading arm supporting seat (2121) through bolts, and arranging the casting body concentric shaft (2132) in two casting bodies (002);

s3: the front part is connected and positioned; putting the safety buckle seat (012), the third connecting piece (005) and the front end support piece (006) into a tool; the safety buckle seat (012) is tightly attached to the buckle seat positioning part (2231), the third connecting piece (005) is placed in the positioning groove (2223) and is tightly attached to the unloading arm (001), the front end support piece (006) is tightly attached to the unloading arm (001) and the third connecting piece (005), and the safety buckle seat is fixed by spot welding after the position is adjusted;

s4: connecting and positioning the middle part and the rear part, and placing a first connecting piece (003) and a connecting square tube (007) into a tool; the first connecting piece (003) is tightly attached to the two casting bodies (002), and the gap between the first connecting piece (003) and the casting bodies (002) is uniformly adjusted; the connecting square tube (007) is tightly attached to the square tube limiting rod (2311) and the square tube supporting plate (2312), meanwhile, the gap between the connecting square tube (007) and the unloading arm (001) is uniformly adjusted, and the connecting square tube is fixed by spot welding after the position is adjusted;

s5: connecting and positioning the welding part, and putting the fourth connecting piece (010) and the welding part (011) into a tool; enabling the fourth connecting piece (010) to be tightly attached to the unloading arm (001), welding the component (011), and fixing the fourth connecting piece (010) and the component positioning block (2321) through spot welding after the position is adjusted;

s6: installing an oil pipe clamp; the supporting frame (110) is driven to move to a proper position through the driving motor (330) or the driving mechanism (300), the U-shaped oil pipe clamp (009) is placed in the center relative to the connecting square tube (007), and the U-shaped oil pipe clamp is fixed by spot welding after the position is adjusted;

s7: the first welding piece (017) and the second welding piece (018) are installed according to a position line, and the first welding piece (017) and the second welding piece (018) are required to be tightly attached to the unloading arm (001); after the position is adjusted, spot welding is carried out for fixation;

s8: and performing slag removal, polishing and correction after welding.

Technical Field

The invention relates to the field of engineering machinery vehicle manufacturing, in particular to a welding tool and a welding process for engineering machinery vehicle parts.

Background

The engineering mechanical vehicle is an engineering vehicle for providing operation service for large engineering. The loading and carrying machine is one kind of engineering mechanical vehicle and is used in fast carrying container, accident vehicle, etc. The loading and carrying machine has a complex structure and comprises welded structural parts.

Referring to fig. 1 and 2, the structure includes two parallel arrangement's unloading arm square tube 001, and the one end fixedly connected with casting body 002 of unloading arm square tube 001. Fixedly connected with first connecting piece 003 between two casting bodies 002, first connecting piece 003 is perpendicular to slope arm square tube 001. Fixedly connected with second connecting piece 004 between two unloading arm square tube 001, second connecting piece 004 is on a parallel with first connecting piece 003, and second connecting piece 004 sets up the one end of keeping away from casting body 002 at unloading arm 001. The equal fixedly connected with third connecting piece 005 in one end that casting body 002 was kept away from to each unloading arm 001, third connecting piece 005 still with second connecting piece 004 fixed connection, fixedly connected with front end support member 006 on the third connecting piece 005, front end support member 006 still with second connecting piece 004 and unloading arm 001 fixed connection. Fixedly connected with is on a parallel with the connection square tube 007 of first connecting piece 003 between two slope arm square tubes 001, and connection square tube 007 is located between first connecting piece 003 and second connecting piece 004. The connecting square tube 007 is fixedly connected with an oil valve mounting plate 008 and a U-shaped oil tube clamp 009 parallel to the first connecting piece 003. Equal fixedly connected with fourth connecting piece 010 and welding part 011 on each unloading arm 001, fourth connecting piece 010 sets up between welding part 011 and unloading arm 001. Each of the unloading arms 001 is fixedly connected with a safety button holder 012, and one of the safety button holders 012 is fixedly connected with a fifth connecting piece 013. Each dump arm 001 is fixedly connected with a bottom support 014, a bolt sleeve 015 and a side support 016, and the bolt sleeve 015 is arranged in the dump arm 001 in a penetrating manner. A first weldment 017 and two second weldments 018 are also fixedly connected to each dump arm 001. All the parts are fixed by welding.

The welding operation is difficult due to the fact that the structural parts are numerous and the connection relation is complex.

Disclosure of Invention

The invention provides a welding tool and a welding process for engineering machinery vehicle components, which are used for facilitating welding of the engineering machinery vehicle components.

The invention provides an engineering machinery vehicle part welding tool and a welding process, which adopt the following technical scheme:

in a first aspect, the invention provides an engineering machinery vehicle part welding tool, which adopts the following technical scheme:

a welding tool for vehicle parts of engineering machinery comprises a bottom frame, wherein a supporting frame is connected to the bottom frame, a clamping mechanism for clamping structural parts is arranged on the supporting frame, and the clamping mechanism comprises a concentric positioning part, a front end positioning part and a middle positioning part; the concentric positioning part comprises an unloading arm positioning component and an unloading arm concentric component, the unloading arm positioning component is used for positioning the unloading arms and is arranged in a one-to-one correspondence manner with the unloading arms, each unloading arm positioning component comprises at least two unloading arm stoppers fixedly connected with the support frame and at least one unloading arm abutting piece movably connected with the support frame, at least two unloading arm stoppers are abutted to the same side face of the corresponding unloading arm, at least one unloading arm abutting piece is used for abutting against a side face of the unloading arm far away from the unloading arm stopper, the concentric assembly of the unloading arm comprises an unloading arm supporting seat fixedly connected with a supporting frame, an unloading arm concentric shaft arranged in the unloading arm supporting seat and used for penetrating into the through holes of the two unloading arms, the unloading arm supporting seat is detachably connected with an unloading arm pressing piece used for abutting against the unloading arm concentric shaft; the front end positioning part comprises a supporting positioning component, a connecting positioning component and a buckle seat positioning component, the supporting positioning component comprises a support piece mounting plate fixedly connected with a support frame, the support piece mounting plate is detachably connected with a bottom support piece, the connecting positioning component comprises a connecting piece mounting plate fixedly connected with the support frame, the connecting piece mounting plate is used for supporting a second connecting piece, the connecting piece mounting plate is fixedly connected with a connecting piece limiting plate used for abutting against the side edge of the second connecting piece, a positioning groove used for positioning a third connecting piece is formed in the connecting piece limiting plate, the buckle seat positioning component comprises a buckle seat positioning part used for supporting a safety buckle seat, and the shape of the buckle seat positioning part is matched with the safety buckle seat; middle part location portion includes square tube locating component and welding parts locating component, square tube locating component includes square tube gag lever post and the square tube backup pad be connected with the link, square tube gag lever post and square tube backup pad fixed connection, square tube gag lever post and square tube backup pad are used for and are connected the square tube butt, welding parts locating component include with support frame fixed connection's part locating piece, the part locating piece be used for support welding parts and with the appearance laminating of welding parts, part locating piece fixedly connected with be used for with the part gag lever post of welding parts side butt.

By adopting the technical scheme, the unloading arm is positioned and fixed by arranging the concentric positioning part, the bottom supporting part is fixed by the supporting and positioning assembly by arranging the front end positioning part, and the second connecting piece and the third connecting piece are positioned by the connecting and positioning assembly; the safety buckle seat is positioned through the buckle seat positioning assembly. Through setting up middle part location portion, fix a position connecting square tube and welding parts. The concentric positioning part, the front end positioning part and the middle positioning part are matched to position and clamp each part in the structural member, so that the structural member is convenient to weld, and meanwhile, the welding precision is improved.

Optionally, the concentric positioning portion further includes a casting body concentric assembly, the casting body concentric assembly includes a casting body concentric shaft for penetrating through the two casting body through holes, and the casting body concentric shaft is connected with the support frame.

By adopting the technical scheme, the two casting bodies are concentric by arranging the concentric components of the casting bodies, and the mounting precision of the structural member is further improved.

Optionally, the concentric positioning portion further comprises an auxiliary concentric assembly, the auxiliary concentric assembly comprises a casting body concentric block arranged in another through hole of the casting body in a penetrating manner, and the casting body concentric block is movably connected with the support frame.

Through adopting above-mentioned technical scheme, through setting up supplementary concentric subassembly, improve the connection precision between two casting bodies, carry out better position fixing to the casting body simultaneously.

Optionally, the square tube limiting rod is rotatably connected with the support frame.

Through adopting above-mentioned technical scheme, rotate the square tube gag lever post with the support frame and be connected, connect the square tube and unload arm welded fastening back, can rotate the square tube gag lever post for the square tube backup pad separates with being connected the square tube, is convenient for to the installation of U type oil pipe clamp.

Optionally, the bottom frame is rotatably connected with the support frame, and a driving motor for driving the support frame to rotate is arranged on the bottom frame.

Through adopting above-mentioned technical scheme, rotate through driving motor drive support frame, adjust the angle of frock, the staff of being convenient for carries out welded fastening to the part of different positions.

Optionally, the bottom frame is movably connected with the support frame, and a driving mechanism for driving the support frame to move is arranged on the bottom frame.

By adopting the technical scheme, the supporting frame is driven to move by the driving mechanism, the angle and the height of the tool are adjusted, and the welding fixing of the parts at different positions is facilitated for workers.

Optionally, the driving mechanism comprises a lifting part, the lifting part comprises a lifting plate connected with the bottom frame in a sliding mode in the vertical direction, and the lifting plate is connected with the supporting frame.

Through adopting above-mentioned technical scheme, the vertical lift of drive lifter plate can make the support frame rise for the staff can carry out welded fastening to the part of different positions.

Optionally, the lifting plate is rotatably connected with the support frame, the driving mechanism further comprises a rotating portion, the rotating portion comprises two groups of coil assemblies, the two groups of coil assemblies are respectively located on two sides of the support frame, each coil assembly comprises a bobbin rotatably connected with the underframe, a thread rope is wound on the bobbin, one end of the thread rope is fixedly connected with the bobbin, and the other end of the thread rope is fixedly connected with the side edge of the support frame.

Through adopting above-mentioned technical scheme, two line section of thick bamboo cooperations of drive rotate, realize the angle modulation to the support frame.

In a second aspect, the invention provides a welding process, which adopts the following technical scheme:

a welding process uses the engineering machinery vehicle part welding tool and comprises the following steps of S1: connecting and positioning the bottom, and putting the bottom supporting piece and the second connecting piece into a tool; the bottom supporting piece is placed on the supporting piece mounting plate, the bottom supporting piece is fixedly connected with the supporting piece mounting plate through a bolt, and the second connecting piece is placed on the connecting piece mounting plate and is tightly abutted to the connecting piece limiting plate; s2, connecting and positioning the main frame; placing the pouring arm and the casting body into the tool, enabling the pouring arm to be tightly attached to the pouring arm stopper and driving the pouring arm to abut against the pouring arm, penetrating the bolt sleeves into the pouring arm, penetrating the concentric shafts of the pouring arm through the two bolt sleeves to be placed on the pouring arm supporting seats, connecting the pouring arm pressing member and the pouring arm supporting seats through bolts, and penetrating the concentric shafts of the casting body into the two casting bodies; s3: the front part is connected and positioned; putting the safety buckle seat, the third connecting piece and the front end supporting piece into a tool; the safety buckle seat is tightly attached to the buckle seat positioning part, the third connecting piece is placed in the positioning groove and tightly attached to the unloading arm, the front end supporting piece is tightly attached to the unloading arm and the third connecting piece, and the front end supporting piece and the unloading arm are fixed in a spot welding mode after the position is adjusted; s4: connecting and positioning the middle rear part, and placing the first connecting piece and the connecting square tube into a tool; the first connecting piece is tightly attached to the two casting bodies, and the gap between the first connecting piece and the casting bodies is uniformly adjusted; the connecting square tube is tightly attached to the square tube limiting rod and the square tube supporting plate, the gap between the connecting square tube and the unloading arm is uniformly adjusted, and the connecting square tube and the unloading arm are fixed by spot welding after the position is adjusted; s5: connecting and positioning the welding part, and placing the fourth connecting piece and the welding part into a tool; enabling the fourth connecting piece to be close to the unloading arm, welding the component fourth connecting piece and the component positioning block, and fixing the component fourth connecting piece and the component positioning block in a spot welding mode after the position is adjusted; s6: installing an oil pipe clamp; the support frame is driven to move to a proper position through a driving motor or a driving mechanism, the U-shaped oil pipe clamp is placed in the middle relative to the connecting square tube, and the U-shaped oil pipe clamp is fixed by spot welding after the position is adjusted; s7: loading the first welding piece and the second welding piece according to a position line, and requiring the first welding piece and the second welding piece to be tightly attached to the unloading arm; after the position is adjusted, spot welding is carried out for fixation; s8: and performing slag removal, polishing and correction after welding.

By adopting the technical scheme, the part at the lower end of the structural part is firstly placed into the workpiece, then the main body part is placed into the workpiece for fixing, and then the parts at different parts are positioned and installed, so that the connection precision between all parts of the structural part is improved.

In summary, the invention includes at least one of the following beneficial technical effects:

1. each part in the structural member is positioned and clamped by matching the concentric positioning part, the front end positioning part and the middle positioning part, so that the structural member is convenient to weld, and meanwhile, the welding precision is improved;

2. the support frame is driven to move through the driving motor or the driving mechanism, the angle of the tool is adjusted, and the welding fixing of the parts at different positions is facilitated for workers.

Drawings

Fig. 1 is a schematic view of the overall structure of the structural member.

Fig. 2 is a schematic view of another perspective of the structural member.

Fig. 3 is a schematic view of the overall structure of the welding tool for the vehicle parts of the construction machinery in embodiment 1.

Fig. 4 is an enlarged view of a portion a of fig. 3.

Fig. 5 is an enlarged view of a portion B of fig. 3.

Fig. 6 is a partial structural schematic view of the welding tool for the vehicle component of the construction machinery in embodiment 1.

Fig. 7 is a partial structural schematic view of the welding tool for the vehicle component of the construction machine in embodiment 1.

Fig. 8 is a schematic view of the overall structure of the welding tool for the vehicle parts of the construction machine in embodiment 2.

Fig. 9 is an enlarged view of a structure of a portion C in fig. 8.

Fig. 10 is an enlarged view of a structure of a portion D in fig. 8.

Fig. 11 is a schematic structural view of the quick clamping assembly in embodiment 2.

Fig. 12 is a schematic diagram of step S1 in the welding process.

Fig. 13 is a schematic diagram of step S2 in the welding process.

Fig. 14 is a schematic diagram of step S3 in the welding process.

Fig. 15 is a schematic diagram of steps S4 and S5 in the welding process.

Fig. 16 is a schematic view of a welded component in a structural member.

Fig. 17 is a schematic diagram of step S5 in the welding process.

Description of reference numerals: 001. a dump arm; 002. a casting body; 003. a first connecting member; 004. a second connecting member; 005. a third connecting member; 006. a front end support; 007. connecting a square tube; 008. an oil way valve mounting plate; 009. a U-shaped tubing clamp; 010. a fourth connecting member; 011. welding the parts; 0111. a first plate member; 0112. a second plate member; 0113. a third plate member; 012. a safety buckle seat; 013. a fifth connecting member; 014. a bottom support; 015. a bolt sleeve; 016. a side support; 017. a first weldment; 018. a second weldment; 100. a chassis; 110. a support frame; 200. a clamping mechanism; 210. a concentric positioning section; 211. a dump arm positioning assembly; 2111. a dump arm stop; 2112. dumping an arm abutment; 212. a dump arm concentric assembly; 2121. unloading the arm support seat; 2122. the dump arm concentric shaft; 2123. a dump arm compression member; 2124. a dump arm auxiliary seat; 213. a casting body concentric assembly; 2131. a casting body support seat; 2132. concentric shafts of the casting body; 2133. a casting body pressing piece; 214. an auxiliary concentric component; 2141. a handle; 2142. a casting body concentric block; 215. a quick clamping assembly; 2151. a substrate; 2152. a first rotating member; 2153. a second rotating member; 2154. a third rotating member; 2155. tightly abutting against the bolt; 220. a front end positioning section; 221. supporting and positioning the assembly; 2211. a support mounting plate; 222. connecting a positioning component; 2221. a connector mounting plate; 2222. a connecting piece limiting plate; 2223. positioning a groove; 223. a fastener seat positioning assembly; 2231. a fastener seat positioning piece; 230. a middle positioning part; 231. a square tube positioning component; 2311. a square tube limiting rod; 2312. a square tube support plate; 232. welding the component positioning assembly; 2321. a component positioning block; 2322. a component limit rod; 2323. a movable rod; 2324. a guiding rule; 300. a drive mechanism; 310. a lifting part; 311. a lifting hydraulic cylinder; 312. a lifting plate; 313. a rotating plate; 314. a clamping assembly; 3141. a first mounting plate; 3142. a second mounting plate; 320. a rotating part; 321. a coil assembly; 3211. a coil motor; 3212. a bobbin; 3213. a cord; 330. the motor is driven.

Detailed Description

The present invention is described in further detail below with reference to FIGS. 1-17.

The embodiment of the invention discloses a welding tool for an engineering machinery vehicle part. Which is used for clamping and fixing the structural member shown in fig. 1 and 2.

Example 1

Referring to fig. 3, the welding tooling for the vehicle parts of the engineering machinery comprises an underframe 100 fixedly placed on the ground, and a support frame 110 is rotatably connected to the underframe 100. The chassis 100 is further fixedly provided with a driving motor 330, and an output shaft of the driving motor 330 is horizontally arranged and fixedly connected with the supporting frame 110. The connection point of the support frame 110 and the driving motor 330 is located at the midpoint of the width direction of the support frame 110.

Referring to fig. 1 and 3, a clamping mechanism 200 is disposed on the supporting frame 110. The clamping mechanism 200 includes a concentric positioning portion 210, a front end positioning portion 220, and a middle positioning portion 230. Concentric locator 210 includes dump arm locator assembly 211, dump arm concentric assembly 212, cast body concentric assembly 213, and sub-concentric assembly 214. Unloading arm locating component 211 sets up to two sets ofly, and two sets of unloading arm locating component 211 and the one-to-one setting of unloading arm 001, unloading arm locating component 211 include two with support frame 110 fixed connection's unloading arm fender part 2111 and one with support frame 110 threaded connection's unloading arm support part 2112. The piece 2111 is kept off to slope arm includes that integrated into one piece's first fender piece and second keeps off piece, and first fender piece and support frame 110 fixed connection, second keep off piece and first fender piece vertical setting, the second keep off the lateral wall butt that can with slope arm 001. Two arms of sloping keep off piece 2111 can with the same lateral wall butt that corresponds the arm 001 of sloping, the arm of sloping support piece 2112 can keep away from the arm of sloping and keep off a side butt that piece 2111 with the arm of sloping 001.

Referring to fig. 1 and 4, the concentric assembly of dump arms 212 includes a dump arm support base 2121 fixedly connected to the support frame 110, a dump arm concentric shaft 2122 is placed on the dump arm support base 2121, and the dump arm concentric shaft 2122 can be inserted into the through holes corresponding to the two dump arms 001. The unloading arm supporting seat 2121 is fixedly connected with an unloading arm pressing piece 2123 through a bolt, and the unloading arm pressing piece 2123 can press the unloading arm concentric shaft 2122 on the unloading arm supporting seat 2121. A first seating groove is formed in the unloading arm support base 2121, and a second seating groove is formed in the unloading arm pressing piece 2123. When the unloading arm pressing part 2123 is fixedly connected with the unloading arm supporting seat 2121, the first seat groove and the second seat groove are communicated to form a polygonal groove, and the unloading arm concentric shaft 2122 is arranged in the polygonal groove in a penetrating manner. Still fixedly connected with auxiliary seat 2124 of unloading arm on support frame 110, auxiliary seat 2124 of unloading arm has seted up the half slot, and its diameter cooperatees with the diameter of unloading arm concentric shaft 2122, and unloading arm concentric shaft 2122 can be placed in the half slot of auxiliary seat 2124 of unloading arm.

Referring to fig. 1 and 5, the casting concentric assembly 213 is similar to the unloading arm concentric assembly 212 in structure, and includes a casting support 2131 fixedly connected to the support bracket 110 and a casting press 2133 fixedly connected to the casting support 2131 by bolts, a casting concentric shaft 2132 is disposed between the casting support 2131 and the casting press 2133, and the casting concentric shaft 2132 can be inserted into through holes corresponding to the two casting 002. The auxiliary concentric assembly 214 includes a casting body concentric block 2142 disposed parallel to the casting body concentric axis 2132, the casting body concentric block 2142 capable of being inserted into another through hole of the casting body 002. The casting body concentric block 2142 is in threaded connection with the support frame 110, and a handle 2141 is fixedly connected to one end of the casting body concentric block 2142 away from the central axis of the support frame 110. The handle 2141 is rotated to enable the casting body concentric block 2142 to be inserted into the casting body 002.

Referring to fig. 1 and 6, the front end positioning portion 220 includes a supporting positioning assembly 221, a connecting positioning assembly 222, and a buckle positioning assembly 223. The support positioning assembly 221 includes a support mounting plate 2211 fixedly connected to the support bracket 110, and the bottom support 014 can be fixedly connected to the support mounting plate 2211 by bolts. The connecting and positioning assembly 222 includes a connector mounting plate 2221 and a connector limiting plate 2222 fixedly connected to the support frame 110, and the connector mounting plate 2221 and the connector limiting plate 2222 are perpendicular to each other. The second connector 004 can be placed on the connector mounting plate 2221 and abutted against the connector limit plate 2222. The connector limiting plate 2222 is provided with a positioning groove 2223, and the third connector 005 can be placed in the positioning groove 2223. The buckle positioning assembly 223 includes a buckle positioning member 2231 fixedly connected to the supporting frame 110, and one side of the buckle positioning member 2231 away from the supporting frame 110 is fitted to the safety buckle 012.

Referring to fig. 1 and 7, the middle position part 230 includes a square tube positioning block 231 and a welded part positioning block 232. The square tube positioning assembly 231 includes a square tube limiting rod 2311 rotatably connected with the supporting frame 110 and a square tube supporting plate 2312 fixedly connected with the square tube limiting rod 2311. The connecting square tube 007 can be placed on the square tube supporting plate 2312 and abutted against the square tube limiting rod 2311. Referring to fig. 2, after connecting square tube 007 and unloading arm 001 welded fastening, can rotate square tube gag lever post 2311, the installation of the U type oil pipe clamp 009 of being convenient for. The welding component positioning assembly 232 comprises a component positioning block 2321 and a component limiting rod 2322 fixedly connected with the support frame 110, and two sides of each component positioning block 2321 are provided with component limiting rods 2322. The component positioning block 2321 is attached to the welding component 011 in shape, and the welding component 011 can be placed on the component positioning block 2321 and the side edge of the welding component is abutted to the component limiting rod 2322.

The implementation principle of the embodiment 1 of the invention is as follows: positioning and fixing the unloading arm 001 by providing the concentric positioning part 210, fixing the bottom support member 014 by providing the front end positioning part 220 through the support positioning assembly 221, and positioning the second connection member 004 and the third connection member 005 by the connection positioning assembly 222; the safety button seat 012 is positioned by the button seat positioning component 223. By providing the middle positioning portion 230, the connecting square tube 007 and the welding member 011 are positioned. The concentric positioning part 210, the front end positioning part 220 and the middle positioning part 230 are matched to position and clamp each part in the structural member, so that the welding of the structural member is facilitated, and meanwhile, the welding precision is improved. In the welding process, the driving motor 330 drives the support frame 110 to move, the angle of the tool is adjusted, and the welding fixing of parts at different positions is facilitated for workers

Example 2

Referring to fig. 8, the present embodiment is different from embodiment 1 in that a support frame 110 is movably connected to a bottom chassis 100. The chassis 100 is provided with a driving mechanism 300 for driving the support bracket 110. The driving mechanism 300 includes a lifting portion 310 and a rotating portion 320.

Referring to fig. 9, the lifting unit 310 includes a lifting cylinder 311 fixedly connected to the base frame 100, the lifting cylinder 311 is vertically disposed and a lifting plate 312 is fixedly connected to a piston rod of the lifting cylinder 311, the lifting plate 312 is rotatably connected to a rotating plate 313, and the rotating plate 313 is detachably connected to the supporting frame 110 through a clamping assembly 314. The clamping assembly 314 includes a first mounting plate 3141 fixedly connected to the rotating plate 313, the first mounting plate 3141 is rotatably connected to a second mounting plate 3142, and the supporting bracket 110 can be tightly supported between the first mounting plate 3141 and the second mounting plate 3142. The first mounting plate 3141, the support bracket 110 and the second mounting plate 3142 are fixedly connected by bolts.

Referring to fig. 8 and 10, the rotating part 320 includes two sets of coil assemblies 321, and the two sets of coil assemblies 321 are respectively located at two sides of the supporting frame 110 in the length direction. The wire coil assembly 321 includes a wire coil motor 3211 fixedly connected to the chassis 100, an output shaft of the wire coil motor 3211 is coaxially and fixedly connected to a wire barrel 3212, a wire rope 3213 is wound around the wire barrel 3212, one end of the wire rope 3213 is fixedly connected to the wire barrel 3212, and the other end is fixedly connected to a side of the supporting frame 110.

Referring to fig. 8 and 11, the concentric locator 210 further includes a quick clamp assembly 215 removably coupled to the cage 110, the quick clamp assembly 215 being capable of tightening against either the stripper arm concentric shaft 2122 or the casting body concentric shaft 2132. The quick-clamp assembly 215 includes a base plate 2151, and the base plate 2151 can be fixedly coupled to the support bracket 110 by bolts. The base plate 2151 is rotatably connected to a first rotating member 2152 and a second rotating member 2153. The first and second rotating members 2152 and 2153 are connected to each other via a third rotating member 2154, one end of the third rotating member 2154 being rotatably connected to the first rotating member 2152 and the other end being rotatably connected to the second rotating member 2153. The second rotating member 2153 is threadedly engaged with the retaining bolt 2155. The compression bolt 2155 can be compressed against either the dump arm concentric shaft 2122 or the cast body concentric shaft 2132.

The implementation principle of the embodiment 2 of the invention is as follows: with support frame 110 through clamping component 314 and rotating plate 313 fixed connection, the piston rod of drive lift pneumatic cylinder 311 stretches out or retracts, can adjust the height of support frame 110, drives two line section of thick bamboo 3212 cooperation and rotates, realizes the angle modulation to support frame 110 for the staff can carry out welded fastening to the part of different positions.

The embodiment of the invention also discloses a welding process which is applied to the engineering machinery vehicle part welding tool. The welding process comprises the following steps:

s1: the bottom is connected and positioned. Referring to fig. 12, the bottom support 014 and the second connector 004 are put into the tool; the bottom support 014 is placed on the support mounting plate 2211, the bottom support 014 is fixedly connected with the support mounting plate 2211 through bolts, and the second connecting piece 004 is placed on the connecting piece mounting plate 2221 and tightly abuts against the connecting piece limiting plate 2222;

and S2, connecting and positioning the main frame. Referring to fig. 13, a dump arm 001 and a casting body 002 are put into a tool, so that the dump arm 001 is tightly attached to a dump arm stopper 2111, a dump arm abutment 2112 is rotated to abut against the dump arm 001, bushings 015 are arranged in the dump arm 001, side supports 016 are put into the tool, a concentric shaft 2122 of the dump arm is arranged on an arm support 2121 through two bushings 015, an arm press 2123 of the dump arm is connected with the arm support 2121 through bolts, a concentric shaft 2132 of the casting body is arranged in two casting bodies 002, a concentric block 2142 of the casting body is arranged in another through hole of the casting body 002, the concentric block 2142 of the casting body is fixed by spot welding after the position is adjusted, a weld is firstly blocked by the side supports 016 during welding, the side supports 016 are tightly attached to the dump arm 001 after welding, and the side supports 016 are welded;

s3: the front part is connected and positioned. Referring to fig. 14, the safety catch 012, the third connector 005, and the front end supporter 006 are put into a tool; the safety button seat 012 is tightly attached to the button seat positioning part 2231, the third connecting part 005 is arranged in the positioning groove 2223 and tightly attached to the unloading arm 001, and the front end support 006 is tightly attached to the unloading arm 001 and the third connecting part 005, and is fixed by spot welding after being adjusted;

s4: the middle rear part is connected and positioned. Referring to fig. 15, the first connecting piece 003 and the connecting square tube 007 are put into a tool; the first connecting piece 003 is tightly attached to the two casting bodies 002, and the gap between the first connecting piece 003 and the casting bodies 002 is uniformly adjusted; the connecting square tube 007 is tightly attached to the square tube limiting rod 2311 and the square tube supporting plate 2312, meanwhile, the gap between the connecting square tube 007 and the unloading arm 001 is uniformly adjusted, and the connecting square tube 007 is fixed in a spot welding mode after the position is adjusted; abutting the oil way valve mounting plate 008 and the connecting square tube 007, enabling the end face of the oil way valve mounting plate 008 to be flush with the end face of the connecting square tube 007, and adjusting the position and then fixing the oil way valve mounting plate 008 and the connecting square tube 007 through spot welding;

s5: and connecting and positioning the welding parts. Referring to fig. 15, the fourth connector 010 and the welding part 011 are put into a tool; the fourth connecting piece 010 is made to be tightly attached to the unloading arm 001, and the welding part 011 is welded to the fourth connecting piece 010 and the part positioning block 2321, and then the fourth connecting piece 010 and the part positioning block 2321 are fixed in a spot welding mode after the position is adjusted;

referring to fig. 16, the welding part 011 includes a first plate 0111, a second plate 0112, and a third plate 0113, which are fixed by welding. For better positioning of the welding parts. Referring to fig. 17, the welding component 011 is placed on the component positioning block 2321, the first plate 0111 abuts against the component positioning block 2321, and the second plate 0112 abuts against the two component limiting rods 2322. Two movable rods 2323 of overlap joint on two unloading arm 001, movable rod 2323 perpendicular to unloading arm 001 sets up, and keeps away from one side butt of second plate 0112 with part gag lever post 2322. Lap gauge 2324 on movable bar 2323, gauge 2324 is placed in parallel with slope arm 001, and can be with the butt of third plate 0113.

S6: installing an oil pipe clamp; the supporting frame 110 is driven to move to a proper position through the driving motor 330 or the driving mechanism 300, the U-shaped oil pipe clamp 009 is placed in the middle relative to the connecting square tube 007, and the U-shaped oil pipe clamp is fixed by spot welding after the position is adjusted;

s7: the first welding piece 017 and the second welding piece 018 are installed according to the position line, and the first welding piece 017 and the second welding piece 018 are required to be tightly attached to the unloading arm 001; after the position is adjusted, spot welding is carried out for fixation;

s8: and performing slag removal, polishing and correction after welding.

The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.