CN114986055A - Welding positioning device for forklift oil tank assembly - Google Patents
Welding positioning device for forklift oil tank assembly Download PDFInfo
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- CN114986055A CN114986055A CN202210442694.9A CN202210442694A CN114986055A CN 114986055 A CN114986055 A CN 114986055A CN 202210442694 A CN202210442694 A CN 202210442694A CN 114986055 A CN114986055 A CN 114986055A
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- positioning device
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- 238000003466 welding Methods 0.000 title claims abstract description 46
- 230000007246 mechanism Effects 0.000 claims abstract description 218
- 238000003825 pressing Methods 0.000 claims description 37
- 239000002828 fuel tank Substances 0.000 claims description 32
- 238000007689 inspection Methods 0.000 claims description 11
- 239000003921 oil Substances 0.000 description 104
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 125000006850 spacer group Chemical group 0.000 description 6
- 238000013213 extrapolation Methods 0.000 description 4
- 230000003584 silencer Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a welding positioning device of a forklift oil tank assembly, wherein a positioning mechanism for positioning the oil tank assembly is arranged on a base, the positioning mechanism comprises a front component positioning mechanism arranged at the front part of the base, a rear component positioning mechanism arranged at the rear part of the base, an oil tank positioning mechanism and an engine bracket positioning mechanism which are arranged in the middle of the base, and the front component positioning mechanism comprises an outward pushing mechanism and first inner jacking mechanisms arranged at two sides of the outward pushing mechanism; the rear component positioning mechanism comprises a rear supporting seat, the oil tank positioning mechanism comprises two second inner jacking mechanisms which are oppositely arranged on two sides of the base and two third inner jacking mechanisms which are respectively positioned on the rear sides of the second inner jacking mechanisms, and the rear sides of the third inner jacking mechanisms are respectively provided with an oil tank rear supporting mechanism. The invention adopts the positioning mechanism and the clamping mechanism driven by the air cylinder, has the advantages of compact structure, convenient operation and high positioning precision, and has very high practical value.
Description
Technical Field
The invention relates to the technical field of forklift manufacturing, in particular to a welding and positioning device for a forklift oil tank assembly.
Background
The forklift oil tank assembly in the prior art is formed by assembling and welding a left oil tank, a right oil tank and a plurality of connecting parts, and the oil tank assembly is complex in structure, so that the welding process is long in time and low in working efficiency, meanwhile, the assembling is carried out manually, and a positioning pin and a clamping mechanism of a tool are completed in a screw screwing mode manually, so that the labor intensity is high, the positioning deviation is large, the size accuracy after welding is low, and the consistency of finished products is poor. With the increasing demand of the forklift, the traditional tool can not meet the requirements on positioning precision and tailor welding efficiency; meanwhile, the existing tool needs to reserve a manually operated working space, so that the size is larger. The chinese patent document with publication number CN215091618U, publication number 2021, 12 and 10, discloses a universal welding mold for fuel tanks of forklifts, which comprises a bottom plate, and further comprises: the support piece is arranged on the top of the bottom plate and used for supporting the oil tank; the limiting block is obliquely arranged along the short edge of one side of the bottom plate and used for limiting the end part of the oil tank; the two first positioning blocks are arranged on the bottom plate and used for limiting the side edge of the oil tank; the clamping piece is arranged on the bottom plate and used for pressing the top surface of the oil tank; the two second positioning blocks are detachably arranged on the two first positioning blocks, the two second positioning blocks limit the side edges of the oil tank through the end faces of the two second positioning blocks, and the number of the two limiting blocks is two. The structure can be suitable for welding various oil tanks, complex replacement of different dies is not needed, and the universality is strong. But the welding mould for the forklift fuel tank is not suitable for welding and positioning the forklift fuel tank assembly with the left fuel tank and the right fuel tank.
Disclosure of Invention
The invention aims to solve the problems of low welding efficiency, large positioning deviation and poor consistency of finished products of an oil tank assembly in the prior art, and provides a welding positioning device of a forklift oil tank assembly.
The invention adopts the technical scheme that a welding and positioning device for a forklift fuel tank assembly, the oil tank assembly comprises a left oil tank, a right oil tank, an engine bracket connected with the bottoms of the left oil tank and the right oil tank, a left front component connected with the front end of the left oil tank, a right front component connected with the front end of the right oil tank and a rear component connected between the rear parts of the left oil tank and the right oil tank, the welding and positioning device of the oil tank assembly comprises a base, a positioning mechanism for positioning the oil tank assembly is arranged on the base, the positioning mechanism comprises a front component positioning mechanism arranged at the front part of the base, a rear component positioning mechanism arranged at the rear part of the base, an oil tank positioning mechanism and an engine bracket positioning mechanism arranged at the middle part of the base, the front component positioning mechanism comprises an outward pushing mechanism and first inner jacking mechanisms arranged on two sides of the outward pushing mechanism; the rear component positioning mechanism comprises a rear supporting seat, a rear component positioning groove is formed in the rear supporting seat, and the rear component positioning mechanism further comprises a rear pressing mechanism and a rear component positioning pin; the oil tank positioning mechanism comprises two second inner jacking mechanisms which are oppositely arranged on two sides of the base and two third inner jacking mechanisms which are respectively positioned on the rear sides of the second inner jacking mechanisms, the rear sides of the third inner jacking mechanisms are respectively provided with an oil tank rear supporting mechanism, and the second inner jacking mechanisms and the third inner jacking mechanisms are both arranged on the sliding rails and are connected with the sliding cylinders; the engine support positioning mechanism comprises support seats positioned on two sides of the base, and a support upper jacking cylinder is arranged below each support seat. The front part of a base is provided with an outward pushing mechanism, and two sides of the outward pushing mechanism are respectively provided with a first inner jacking mechanism for positioning front components at two sides of an oil tank assembly; the rear portion of base sets up the back supporting seat, carries out basic location to the back subassembly through the back subassembly constant head tank on the back supporting seat, adopts the back subassembly locating pin to further fix a position the back subassembly to compress tightly the back subassembly through back hold-down mechanism. The second inner jacking mechanism and the third inner jacking mechanism arranged on two sides of the base are used for positioning the side surfaces of the left oil tank and the right oil tank, and the second inner jacking mechanism and the third inner jacking mechanism are arranged on the slide rails and can move and can be moved away when the oil tanks are put in. An oil tank rear supporting mechanism is arranged on the rear side of the third inner top mechanism to position the rear parts of the left and right oil tanks; the support base is arranged on two sides of the base and used for positioning the engine support, and the support upper jacking cylinder is arranged below the support base, so that the engine support can be jacked up and attached to the bottom surface of the oil tank conveniently during welding. Therefore, the invention realizes the one-key in-place and clamping of the tool positioning and the one-key loosening and demoulding through the pneumatic positioning mechanism and the clamping mechanism; because the cylinder driving positioning mechanism and the clamping mechanism are adopted, the wrench space which needs to be reserved in the existing tool is saved, the whole tool structure is more compact, the positioning precision is greatly improved, and the problems of low welding efficiency, large positioning deviation and poor consistency of finished products of the oil tank assembly in the prior art are solved.
Preferably, the outward pushing mechanism comprises a middle plate and side plates, the middle plate is vertically arranged, the side plates are arranged on two sides of the middle plate in parallel, a movable pushing plate is arranged between each side plate and the middle plate, outward pushing cylinders are arranged on two sides of the middle plate, piston rods of the outward pushing cylinders are connected with the inner side faces of the movable pushing plates, front assembly ejection posts and front assembly positioning pins are arranged on the outer side faces of the movable pushing plates, through holes matched with the front assembly ejection posts and the front assembly positioning pins are formed in the side plates, and when the piston rods of the outward pushing cylinders extend out, the movable pushing plates move to drive the front assembly ejection posts and the front assembly positioning pins to extend out of the through holes in the side plates. The invention takes the middle plate as a reference, the movable push plate is pushed out to two sides by the outward pushing cylinders arranged on two sides of the middle plate, and the movable push plate moves to drive the positioning pin of the front component to extend out of the through hole on the side plate and align with the positioning hole on the front component for positioning; and the front assembly is compressed and fixed through the front assembly ejection column, so that the front assembly is positioned.
Preferably, the extrapolation mechanism is of a symmetrical structure, cantilevers for positioning the front component are arranged at the tops of the side plates at two sides, the length direction of each cantilever is consistent with the moving direction of the movable push plate, 2-4 extrapolation air cylinders are arranged at one side of the middle plate, and the extrapolation air cylinders are arranged in parallel; the first inner jacking mechanism comprises a base and an inner jacking cylinder transversely arranged on the base, wherein a jacking block is arranged at the front end of a cylinder shaft of the inner jacking cylinder, and an adjustable jacking pin is arranged on the jacking block. The cantilever is matched with the through hole on the ear plate of the front component and is used for fixing the front component; the first inner jacking mechanism is matched with the outer jacking mechanism, the front assembly is extruded and fixed from two opposite directions, the adjustable jacking pin on the jacking block can be finely adjusted, the ejection mechanism is ensured to be in close contact with the front assembly, the positioning precision is improved, and the movable push plate can be ensured to stably move by adopting the parallel arrangement and synchronous operation of the plurality of outer pushing cylinders.
Preferably, the rear pressing mechanism is arranged on one side of the rear supporting seat and comprises a vertically arranged pressing cylinder, an output shaft of the pressing cylinder is connected with one end of a pressing plate, the middle part of the pressing plate is rotatably connected to an upright post, and the other end of the pressing plate is positioned above the rear supporting seat; the rear side of the rear supporting seat is also provided with a threaded hole inspection device which comprises a mounting seat and an inspection pin transversely arranged on the mounting seat. The tight cylinder in top cooperates with the pressure strip for compress tightly the back subassembly, when the output shaft of the tight cylinder in top stretches out, with the one end jack-up of pressure strip, and pressure strip middle part swing joint is on the stand, therefore the other end (the end that compresses tightly) of pressure strip pushes down and compresses tightly the back subassembly fixedly. And the threaded hole pin inspection device at the rear side of the rear supporting seat is used for inspecting the threaded hole at the rear end of the rear assembly through an inspection pin, so that the position is ensured to be accurate.
Preferably, the second inner jacking mechanism and the third inner jacking mechanism both comprise a base and an inner jacking cylinder arranged on the base, the front end of a cylinder shaft of the inner jacking cylinder is provided with a jacking block, the jacking block is provided with an adjustable jacking pin, sliding chutes matched with the sliding rails are respectively arranged below the bases of the second inner jacking mechanism and the third inner jacking mechanism, a pull rod is fixed below the base, the base is provided with a through groove, and the lower end of the pull rod penetrates through the through groove to be connected with the sliding cylinder arranged below the base; the second inner jacking mechanism and the third inner jacking mechanism are symmetrically arranged. The second inner top mechanism and the third inner top mechanism are similar to the first inner top mechanism, a left oil tank and a right oil tank are fixed in a mode that two sides of a bottom plate extrude towards the middle, and different from the first inner top mechanism, the second inner top mechanism and the third inner top mechanism can move transversely to facilitate the entering of the oil tanks, and a sliding cylinder below a base is used for transversely moving the second inner top mechanism and the third inner top mechanism; and the inner jacking cylinder is used for driving the jacking block to compress the oil tank.
Preferably, the upper part of the second inner jacking mechanism is also provided with a limiting pin, the front end part of the limiting pin is provided with a roller, the wheel shaft of the roller is parallel to the base and is vertical to the limiting pin, and the rear end of the limiting pin is provided with a pull ring; the welding positioning device further comprises a rib plate positioning device for positioning the rib plate, the rib plate positioning device comprises shelves arranged on side plates on two sides of the pushing mechanism, and the shelves are of L-shaped structures and are obliquely arranged. The spacer pin is used for the spacing at oil tank top, and the running roller is used for reducing the frictional force when the spacer pin removes for the oil tank, and the pull ring is used for the manual work to pull out the spacer pin. The rib plate positioning device is used for positioning a rib plate on the oil tank assembly.
Preferably, the oil tank rear supporting mechanism comprises a supporting frame, a clamping seat is arranged on the supporting frame, the bottom of the clamping seat is connected with the top of the supporting frame through a rotating shaft, a front upward jacking cylinder is arranged in the supporting frame on the front side of the rotating shaft, a rear upward jacking cylinder is arranged in the supporting frame on the rear side of the rotating shaft, the welding positioning device further comprises a left support positioning block and a right support positioning block which are used for positioning a left support and a right support of the oil tank assembly, the left support positioning block and the right support positioning block are two and are respectively arranged on the clamping seats of the oil tank rear supporting mechanism on the two sides of the base, the left support positioning block and the right support positioning block are L-shaped and are arranged up and down, and the left support positioning block and the right support positioning block are both provided with adjustable jacking pins. The oil tank rear supporting mechanism is used for positioning the oil tank rear part and a left support and a right support on an oil tank assembly, the clamping seat can be turned around the rotating shaft, when the front upper jacking air cylinder acts, the clamping seat is pushed to turn towards the rear side (the clamping seat is opened), and the positioning mechanism on the clamping seat is far away from the oil tank rear part; when the front rear top cylinder acts, the clamping seat is pushed to rotate forwards (the clamping seat resets), and the positioning mechanism on the clamping seat is close to the rear part of the oil tank and plays a role in positioning the left support and the right support.
Preferably, the rear assembly positioning pin is arranged on one side, close to the middle of the base, of the oil tank rear supporting mechanism, and the oil tank rear positioning pin is arranged on one side, close to the oil tank limiting block, of the clamping seat; the clamping seat is also provided with an oil tank limiting block used for limiting the rear part of the oil tank, and the oil tank limiting block is L-shaped and is arranged on one side of the clamping seat far away from the center of the base. The center of the base refers to the symmetric center of the base, and the left oil tank and the right oil tank, the left front component and the right front component and the rear component of the forklift oil tank assembly are all of symmetric structures; the corresponding outer pushing mechanism, the first inner pushing mechanism, the second inner pushing mechanism, the third inner pushing mechanism and the oil tank rear supporting mechanism are also of symmetrical structures, and the symmetrical centers of the symmetrical structures are located on the central line of the base in the front-rear direction.
As preferred, engine support is two, the support frame seat be four, the symmetry sets up in the base both sides, is equipped with the recess that is used for engine support frame tip location on the support frame seat, engine support frame positioning mechanism still includes diaphragm positioning mechanism, diaphragm positioning mechanism include two diaphragm supporting seats that are used for placing the diaphragm, be equipped with the locating pin on the diaphragm supporting seat, one side of diaphragm supporting seat is equipped with diaphragm hold-down mechanism, diaphragm hold-down mechanism include the cylinder that compresses tightly of vertical setting, the output shaft of compressing tightly the cylinder be connected with the one end of a horizontal setting's compressing tightly pole, the other end of compressing tightly the pole is equipped with the adjustable knock pin of directional diaphragm.
As preferred, the welding positioning device of the forklift oil tank assembly further comprises a water tank support positioning device and a silencer support positioning device, and the water tank support positioning device comprises a water tank left support positioning device and a water tank right support positioning device.
The welding positioning device of the forklift truck oil tank assembly has the advantages of compact structure, convenience in operation and high positioning precision, can obviously improve work efficiency and product quality, and has high practical value.
Drawings
FIG. 1 is a schematic perspective view of a welding fixture according to the present invention;
FIG. 2 is a schematic perspective view of the welding fixture of the present invention in an operational position; (ii) a
FIG. 3 is a schematic perspective view of the extrapolation mechanism of the present invention;
FIG. 4 is a schematic top view of the welding fixture of the present invention;
FIG. 5 is a schematic cross-sectional view of the weld positioning apparatus of the present invention;
FIG. 6 is a bottom view of the weld positioning device of the present invention;
FIG. 7 is a perspective view of the first internal roof mechanism of the present invention;
FIG. 8 is a perspective view of a second internal roof mechanism of the present invention;
FIG. 9 is a perspective view of a third internal jacking mechanism of the present invention;
FIG. 10 is a perspective view of the rear support mechanism (right member) of the fuel tank of the present invention;
FIG. 11 is a schematic perspective view of another embodiment of the rear support mechanism (right member) of the fuel tank of the present invention;
FIG. 12 is a schematic perspective view of the cross plate hold down mechanism of the present invention;
fig. 13 is a perspective view of a fuel tank assembly of a forklift.
In the figure: 1. the engine comprises a left oil tank, 2, a right oil tank, 3, an engine bracket, 4, a left front assembly, 5, a right front assembly, 6, a rear assembly, 7, a base, 8, an outer push mechanism, 9, a first inner push mechanism, 10, a rear supporting seat, 11, a rear assembly positioning groove, 12, a rear pressing mechanism, 13, a rear assembly positioning pin, 14, a second inner push mechanism, 15, a third inner push mechanism, 16, an oil tank rear supporting mechanism, 17, a sliding rail, 18, a sliding cylinder, 19, a bracket seat, 20, a bracket upper push cylinder, 21, a middle plate, 22, a side plate, 23, a movable push plate, 24, an outer push cylinder, 25, a front assembly jacking column, 26, a front assembly positioning pin, 27, a cantilever, 28, a base, 29, an inner push cylinder, 30, a jacking block, 31, an adjustable jacking pin, 32, a jacking cylinder, 33, a pressing plate, 34, a stand column, 35, a mounting seat, 36, a checking pin, 37 sliding groove, 38, a pull rod, 39. the hydraulic oil tank comprises a through groove, 40 rollers, 41 pull rings, 42 rib plates, 43 shelves, 44 support frames, 45 clamping seats, 46 rotating shafts, 47 front upper ejection cylinders, 48 rear upper ejection cylinders, 49 left supports, 50 right supports, 51 left support positioning blocks, 52 right support positioning blocks, 53 oil tank rear positioning pins, 54 oil tank limiting blocks, 55 transverse plates, 56 transverse plate supporting seats, 57 transverse plate pressing mechanisms, 58 pressing cylinders, 59 pressing rods, 60 limiting pins, 61 transverse plate pressing pins and 62 lug plates.
Detailed Description
The following provides a further description of embodiments of the present invention by way of examples and with reference to the accompanying drawings.
Example 1
In embodiment 1 as shown in fig. 1 and 2, a welding positioning device for a forklift fuel tank assembly comprises a left fuel tank 1, a right fuel tank 2 (see fig. 13), two engine brackets 3 which are connected with the bottoms of the left fuel tank and the right fuel tank and are arranged in the front and at the back, a left front component 4 connected with the front end of the left fuel tank, a right front component 5 connected with the front end of the right fuel tank, and a rear component 6 connected between the rear parts of the left fuel tank and the right fuel tank, a left bracket 49 and a right bracket 50 which are positioned at the left side and the right side of the rear component, and transverse plates 55 are further arranged on the left fuel tank and the right fuel tank. The welding positioning device of the oil tank assembly comprises a base 7, wherein a positioning mechanism for positioning the oil tank assembly is arranged on the base, and the positioning mechanism comprises a front component positioning mechanism arranged at the front part of the base, a rear component positioning mechanism arranged at the rear part of the base, an oil tank positioning mechanism arranged at the middle part of the base and an engine support positioning mechanism.
The front component positioning mechanism comprises an outward pushing mechanism 8 (shown in figure 3) and first inner jacking mechanisms 9 (shown in figure 7) arranged at two sides of the outward pushing mechanism; the push-out mechanism is of a symmetrical structure and comprises a bottom plate, a middle plate 21 vertically arranged on the bottom plate, side plates 22 arranged on two sides of the middle plate in parallel, a top plate connected to the top of the middle plate, a movable push plate 23 arranged between the side plates and the middle plate, 4 push-out air cylinders 24 arranged on two sides of the middle plate in parallel, the piston rod of the outward-pushing cylinder is connected with the inner side surface of the movable push plate, the outer side surface of the movable push plate is provided with a front component support pillar 25 and a front component positioning pin 26, the side plate is provided with a through hole matched with the front component support pillar and the front component positioning pin, when the piston rod of the outward-pushing cylinder extends out, the movable push plate moves to drive the front assembly ejection column and the front assembly positioning pin to extend out of the through hole in the side plate, the front assembly positioning pin aligns with the positioning hole in the front assembly to be positioned, and the front assembly ejection column compresses and fixes the front assembly, so that the front assembly is positioned. The tops of the side plates at the two sides are higher than the top plate, the higher parts of the side plates are provided with cantilevers 27 used for positioning the front components, the length direction of the cantilevers is consistent with the moving direction of the movable push plate, and the cantilevers are matched with through holes on the ear plates 62 of the front components and used for fixing the left front components and the right front components; the first inner jacking mechanism comprises a base 28 and an inner jacking cylinder 29 transversely arranged on the base, wherein a jacking block 30 is arranged at the front end of a cylinder shaft of the inner jacking cylinder, the jacking block is cylindrical, three adjustable jacking pins 31 are arranged on the jacking block, the rear part of each adjustable jacking pin is a threaded part, and the front end of each adjustable jacking pin is hemispherical. The first inner jacking mechanism is matched with the outer pushing mechanism, the front assembly is extruded and fixed from two opposite directions, and an adjustable jacking pin on the jacking block can be finely adjusted to ensure that the jacking block is in close contact with the front assembly, so that the positioning precision is improved; and a plurality of pushing cylinders are arranged in parallel and work synchronously, so that the movable push plate can be ensured to move stably.
The rear component positioning mechanism comprises a rear supporting seat 10, a positioning plate is arranged on the rear supporting seat, a rear component positioning groove 11 is arranged on the positioning plate, and the width of the positioning groove is consistent with the width of the main body of the rear component; the rear assembly positioning mechanism also comprises a rear pressing mechanism 12 and a rear assembly positioning pin 13; the oil tank positioning mechanism comprises two second inner jacking mechanisms 14 (shown in figure 8) which are oppositely arranged on two sides of the base and two third inner jacking mechanisms 15 (shown in figure 9) which are respectively positioned on the rear sides of the second inner jacking mechanisms, oil tank rear supporting mechanisms 16 (shown in figure 10 and figure 11) are respectively arranged on the rear sides of the third inner jacking mechanisms, and the second inner jacking mechanisms and the third inner jacking mechanisms are both arranged on sliding rails 17 and are connected with sliding cylinders 18 (shown in figure 6); the engine support positioning mechanism comprises support seats 19 positioned on two sides of the base, and a support upper jacking cylinder 20 (see figure 5) is arranged below the support seats.
The rear pressing mechanism of the embodiment is arranged on the left side of the rear supporting seat, the rear pressing mechanism comprises a vertically arranged pressing cylinder 32, an output shaft of the pressing cylinder is connected with one end of a pressing plate 33, the middle part of the pressing plate is rotatably connected to the top end of an upright post 34 through a waist-shaped hole, and the pressing end of the pressing plate is positioned above the rear supporting seat; the tight cylinder in top cooperates with the pressure strip for compress tightly the back subassembly, when the output shaft of the tight cylinder in top stretches out, with the one end jack-up of pressure strip, and pressure strip middle part swing joint is on the stand, therefore the other end (the end that compresses tightly) of pressure strip pushes down and compresses tightly the back subassembly fixedly. The rear side of the rear supporting seat is also provided with a threaded hole inspection device which comprises a mounting seat 35 and an inspection pin 36 transversely arranged on the mounting seat. The threaded hole inspection device is used for inspecting a threaded hole in the rear end of the rear assembly through an inspection pin, and the position accuracy is ensured.
The second inner jacking mechanism and the third inner jacking mechanism respectively comprise a base and an inner jacking cylinder arranged on the base, the front end of a cylinder shaft of the inner jacking cylinder is provided with a jacking block, an adjustable jacking pin is arranged on the jacking block, sliding grooves 37 matched with the sliding rails are formed below the bases of the second inner jacking mechanism and the third inner jacking mechanism, a pull rod 38 is fixed below the base, the base is provided with a through groove 39, and the lower end of the pull rod penetrates through the through groove to be connected with the sliding cylinder arranged below the base; the second inner jacking mechanism and the third inner jacking mechanism are symmetrically arranged. The second inner top mechanism and the third inner top mechanism are similar to the first inner top mechanism, a left oil tank and a right oil tank are fixed in a mode that two sides of a bottom plate extrude towards the middle, the second inner top mechanism and the third inner top mechanism can move transversely to facilitate the entering of the oil tanks, and a sliding cylinder below a base is used for the transverse movement of the second inner top mechanism and the third inner top mechanism; and the inner jacking cylinder is used for driving the jacking block to compress the oil tank.
The upper part of the second inner jacking mechanism is also provided with a limiting pin 60, the front end part of the limiting pin is provided with a roller 40, the wheel shaft of the roller is parallel to the base and is vertical to the limiting pin, and the rear end of the limiting pin is provided with a pull ring 41; and a rib plate 42 is connected between the left front component and the right front component of the oil tank assembly, the welding positioning device further comprises a rib plate positioning device for positioning the rib plate, the rib plate positioning device comprises shelves 43 arranged on the side plates on two sides of the pushing mechanism, and the shelves are L-shaped structures and are obliquely arranged. The spacer pin is used for spacing at oil tank top, and the running roller is used for reducing the frictional force of spacer pin when removing for the oil tank, and the pull ring is used for the manual work to pull out the spacer pin. The rib plate positioning device is used for positioning a rib plate on the oil tank assembly.
The oil tank rear portion supporting mechanism of this embodiment includes support frame 44, is equipped with cassette 45 on the support frame, and the bottom of cassette is connected through pivot 46 the top of support frame, be equipped with preceding top cylinder 47 in the support frame of pivot front side, be equipped with back top cylinder 48 in the support frame of pivot rear side, welding position device is still including left socle 49 and the left socle locating piece 51 and the right socle locating piece 52 that are used for the left socle 49 and the right socle 50 location of oil tank assembly, left socle locating piece and right socle locating piece be two and set up respectively on the cassette of base both sides oil tank rear portion supporting mechanism, left socle locating piece and right socle locating piece are L shape and arrange from top to bottom, left socle locating piece and right socle locating piece all are equipped with adjustable knock pin. The oil tank rear supporting mechanism is used for positioning the oil tank rear part and a left support and a right support on an oil tank assembly, the clamping seat can turn around a rotating shaft, when the front upper jacking air cylinder acts, the connecting jacking pin 61 connected with the front upper jacking air cylinder moves upwards to push the clamping seat to turn towards the rear side (the clamping seat is opened), and the positioning mechanism on the clamping seat is far away from the oil tank rear part; when the front rear top cylinder acts, the clamping seat is pushed to rotate forwards (the clamping seat resets), and the positioning mechanism on the clamping seat is close to the rear part of the oil tank and plays a role in positioning the left support and the right support.
The rear assembly positioning pin of the embodiment is arranged on one side of the oil tank rear supporting mechanism close to the middle of the base, and an oil tank rear positioning pin 53 is arranged on one side of the clamping seat close to the oil tank limiting block; an oil tank limiting block 54 used for limiting the rear part of an oil tank is further arranged on the clamping seat, and the oil tank limiting block is L-shaped and is arranged on one side, far away from the center of the base, of the clamping seat.
The engine support of this embodiment is two, the support frame be four, the symmetry sets up in the base both sides, is equipped with the recess that is used for engine support tip location on the support frame, engine support positioning mechanism still includes diaphragm positioning mechanism, diaphragm positioning mechanism include two diaphragm supporting seats 56 that are used for placing diaphragm 55, be equipped with the locating pin on the diaphragm supporting seat, one side of diaphragm supporting seat is equipped with diaphragm hold-down mechanism 57 (see fig. 4 fig. 12), diaphragm hold-down mechanism include the compressing cylinder 58 of vertical setting, the output shaft that compresses tightly the cylinder be connected with the one end of a compressing tightly pole 59 that transversely sets up, the other end that compresses tightly the pole is equipped with the adjustable knock pin of directional diaphragm. The welding positioning device for the forklift oil tank assembly further comprises a water tank support positioning device and a silencer support positioning device (drawn in the figure), wherein the water tank support positioning device comprises a water tank left support positioning device and a water tank right support positioning device.
The front part of a base is provided with an outward pushing mechanism, and two sides of the outward pushing mechanism are respectively provided with a first inner jacking mechanism for positioning front components at two sides of an oil tank assembly; the rear portion of base sets up the back supporting seat, carries out basic location to the back subassembly through the back subassembly constant head tank on the back supporting seat, adopts the back subassembly locating pin to further fix a position the back subassembly to compress tightly the back subassembly through back hold-down mechanism. The second inner jacking mechanism and the third inner jacking mechanism arranged on two sides of the base are used for positioning the side surfaces of the left oil tank and the right oil tank, and the second inner jacking mechanism and the third inner jacking mechanism are arranged on the slide rails and can move and can be moved away when the oil tanks are put in. An oil tank rear supporting mechanism is arranged on the rear side of the third inner top mechanism to position the rear parts of the left and right oil tanks; the support base is arranged on two sides of the base and used for positioning the engine support, and the support upper jacking cylinder is arranged below the support base, so that the engine support can be jacked up and attached to the bottom surface of the oil tank conveniently during welding. Therefore, the invention realizes the one-key in-place and clamping of the tool positioning and the one-key loosening and demoulding through the pneumatic positioning mechanism and the clamping mechanism; because the cylinder driving positioning mechanism and the clamping mechanism are adopted, the wrench space which needs to be reserved in the existing tool is saved, the whole tool structure is more compact, the positioning precision is greatly improved, and the problems of low welding efficiency, large positioning deviation and poor consistency of finished products of the oil tank assembly in the prior art are solved.
In addition to the above embodiments, the technical features or technical data of the present invention may be reselected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and are within the protection scope of the present invention.
Claims (10)
1. A welding and positioning device of a forklift oil tank assembly comprises a left oil tank (1), a right oil tank (2), an engine bracket (3) connecting the bottoms of the left oil tank and the right oil tank, a left front component (4) connected with the front end of the left oil tank, a right front component (5) connected with the front end of the right oil tank and a rear component (6) connected between the rear parts of the left oil tank and the right oil tank, it is characterized in that the welding and positioning device of the oil tank assembly comprises a base (7), a positioning mechanism for positioning the oil tank assembly is arranged on the base, the positioning mechanism comprises a front component positioning mechanism arranged at the front part of the base, a rear component positioning mechanism arranged at the rear part of the base, an oil tank positioning mechanism and an engine bracket positioning mechanism arranged at the middle part of the base, the front component positioning mechanism comprises an outward pushing mechanism (8) and first inner jacking mechanisms (9) arranged on two sides of the outward pushing mechanism; the rear component positioning mechanism comprises a rear supporting seat (10), a rear component positioning groove (11) is formed in the rear supporting seat, and the rear component positioning mechanism further comprises a rear pressing mechanism (12) and a rear component positioning pin (13); the oil tank positioning mechanism comprises two second inner jacking mechanisms (14) which are oppositely arranged on two sides of the base and two third inner jacking mechanisms (15) which are respectively positioned on the rear sides of the second inner jacking mechanisms, oil tank rear supporting mechanisms (16) are respectively arranged on the rear sides of the third inner jacking mechanisms, and the second inner jacking mechanisms and the third inner jacking mechanisms are respectively arranged on the sliding rails (17) and are connected with the sliding cylinders (18); the engine support positioning mechanism comprises support seats (19) positioned on two sides of the base, and a support upper jacking cylinder (20) is arranged below each support seat.
2. The welding and positioning device for the forklift fuel tank assembly according to claim 1, wherein the pushing mechanism comprises a middle plate (21) vertically arranged and side plates (22) parallelly arranged on both sides of the middle plate, a movable pushing plate (23) is arranged between the side plates and the middle plate, pushing cylinders (24) are arranged on both sides of the middle plate, a piston rod of each pushing cylinder is connected with the inner side surface of the movable pushing plate, a front component top pillar (25) and a front component positioning pin (26) are arranged on the outer side surface of the movable pushing plate, through holes matched with the front component top pillar and the front component positioning pin are arranged on the side plates, and when the piston rod of each pushing cylinder extends, the movable pushing plate moves to drive the front component top pillar and the front component positioning pin to extend out of the through holes in the side plates.
3. The welding and positioning device for the forklift fuel tank assembly according to claim 2, wherein the outward pushing mechanism is of a symmetrical structure, the top parts of the two side plates are respectively provided with a cantilever (27) for positioning the front component, the length direction of the cantilever is consistent with the moving direction of the movable push plate, 2-4 outward pushing cylinders are arranged on one side of the middle plate, and the outward pushing cylinders are arranged in parallel; the first inner jacking mechanism comprises a base (28) and an inner jacking cylinder (29) transversely arranged on the base, wherein a jacking block (30) is arranged at the front end of a cylinder shaft of the inner jacking cylinder, and an adjustable jacking pin (31) is arranged on the jacking block.
4. The welding positioning device for the forklift fuel tank assembly as recited in claim 1, wherein the rear pressing mechanism is arranged on one side of the rear supporting seat, the rear pressing mechanism comprises a vertically arranged pressing cylinder (32), an output shaft of the pressing cylinder is connected with one end of a pressing plate (33), the middle part of the pressing plate is rotatably connected to a stand column (34), and the other end of the pressing plate is positioned above the rear supporting seat; the rear side of the rear supporting seat is also provided with a threaded hole inspection device, and the threaded hole inspection device comprises a mounting seat (35) and an inspection pin (36) transversely arranged on the mounting seat.
5. The welding and positioning device for the forklift fuel tank assembly according to claim 1, wherein each of the second and third inner jacking mechanisms comprises a base and an inner jacking cylinder arranged on the base, a jacking block is arranged at the front end of a cylinder shaft of the inner jacking cylinder, an adjustable jacking pin is arranged on the jacking block, sliding grooves (37) matched with the sliding rails are respectively arranged below the bases of the second and third inner jacking mechanisms, a pull rod (38) is fixed below the base, a through groove (39) is arranged on the base, and the lower end of the pull rod passes through the through groove and is connected with the sliding cylinder arranged below the base; the second inner jacking mechanism and the third inner jacking mechanism are symmetrically arranged.
6. The welding and positioning device for the forklift fuel tank assembly according to claim 2, wherein a limit pin (60) is further arranged at the upper part of the second inner jacking mechanism, a roller (40) is arranged at the front end part of the limit pin, the wheel shaft of the roller is parallel to the base and is perpendicular to the limit pin, and a pull ring (41) is arranged at the rear end of the limit pin; a rib plate (42) is connected between a left front component and a right front component of the oil tank assembly, the welding positioning device further comprises a rib plate positioning device for positioning the rib plate, the rib plate positioning device comprises shelves (43) arranged on side plates on two sides of the pushing-out mechanism, and the shelves are of L-shaped structures and are arranged obliquely.
7. The welding fixture of claim 1, wherein, the supporting mechanism at the rear part of the oil tank comprises a supporting frame (44), a clamping seat (45) is arranged on the supporting frame, the bottom of the clamping seat is connected with the top of the supporting frame through a rotating shaft (46), a front upper jacking cylinder (47) is arranged in the support frame on the front side of the rotating shaft, a rear upper jacking cylinder (48) is arranged in the support frame on the rear side of the rotating shaft, the welding positioning device further comprises a left support positioning block (51) and a right support positioning block (52) which are used for positioning a left support (49) and a right support (50) of the oil tank assembly, the left support positioning block and the right support positioning block are two and are respectively arranged on the clamping seats of the supporting mechanisms at the rear parts of the oil tanks on the two sides of the base, the left support positioning block and the right support positioning block are L-shaped and are arranged up and down, and the left support positioning block and the right support positioning block are both provided with adjustable ejector pins.
8. The welding positioning device for the forklift fuel tank assembly according to claim 7, wherein the rear component positioning pin is arranged on one side of the fuel tank rear supporting mechanism close to the middle of the base, and the fuel tank rear positioning pin (53) is arranged on one side of the clamping seat close to the fuel tank limiting block; an oil tank limiting block (54) used for limiting the rear part of the oil tank is further arranged on the clamping seat, and the oil tank limiting block is L-shaped and is arranged on one side, far away from the center of the base, of the clamping seat.
9. The welding and positioning device for the forklift fuel tank assembly according to claim 1, wherein the number of the engine supports is two, the number of the support bases is four, the engine supports are symmetrically arranged on two sides of the base, grooves for positioning the ends of the engine supports are formed in the support bases, the engine support positioning mechanism further comprises a transverse plate positioning mechanism, the transverse plate positioning mechanism comprises two transverse plate supporting seats (56) for placing transverse plates (55), positioning pins are arranged on the transverse plate supporting seats, a transverse plate pressing mechanism (57) is arranged on one side of each transverse plate supporting seat, the transverse plate pressing mechanism comprises a vertically arranged pressing cylinder (58), an output shaft of the pressing cylinder is connected with one end of a transversely arranged pressing rod (59), and an adjustable ejector pin pointing to the transverse plate is arranged at the other end of the pressing rod.
10. The welding positioning device for the forklift fuel tank assembly according to any one of claims 1 to 9, wherein the welding positioning device for the forklift fuel tank assembly further comprises a tank bracket positioning device and a muffler bracket positioning device, and the tank bracket positioning device comprises a tank left bracket positioning device and a tank right bracket positioning device.
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| CN202210442694.9A CN114986055B (en) | 2022-04-25 | 2022-04-25 | Welding positioning device of forklift oil tank assembly |
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| CN202210442694.9A CN114986055B (en) | 2022-04-25 | 2022-04-25 | Welding positioning device of forklift oil tank assembly |
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| CN114986055B CN114986055B (en) | 2023-12-08 |
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|---|---|
| CN114986055B (en) | 2023-12-08 |
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