CN215588322U - Welding fixture for auxiliary oil tank rear support - Google Patents

Abstract

The utility model relates to a support seam anchor clamps behind bellytank, relate to auto-parts processing field, it includes the mounting panel, mounting panel one end has set firmly the stand, the stand upper end is equipped with the first quick clamp to a spare part spacing, the mounting panel is equipped with the second quick clamp of restriction spare part two along deviating from the mounting panel direction removal, restriction spare part two is along the third quick clamp of its length direction removal, the mounting panel set firmly respectively with the locating piece of two first mounting hole adaptations, this application spare part one, relative position between spare part two and the spare part three is difficult for changing, the effect that has improved welding precision has.

Description

Welding fixture for auxiliary oil tank rear support

Technical Field

The invention relates to the field of automobile accessory processing, in particular to a welding fixture for a rear support of an auxiliary oil tank.

Background

The automobile oil tank mainly stores fuel oil for providing power for an automobile, the oil temperature and the oil pressure in the oil tank are high and large in the automobile operation process, and if the oil tank is violently collided in the automobile operation process, safety accidents such as the oil tank is easy to break or even explode and the like. The rapid clamp is a clamp product which utilizes a manual rocker to rapidly change the position of a pressure rod.

Referring to fig. 1, the secondary fuel tank rear bracket is composed of a first component part 100, two 200 and three 300 welding of spare part form, 100 is hollow rectangle tubulose, two 200 are flat, two 200 are bent along its length direction's one end, three 300 of spare part are equipped with bottom plate 301, bottom plate 301 is the same with two 200 widths of spare part, two first mounting holes 302 have been seted up to bottom plate 301's intermediate position, bottom plate 301 one end has all set firmly the first riser 303 along its width direction's both sides, bottom plate 301 has seted up the square hole 304 near the one end of first riser 303, the tip has all seted up the arc hole 305 with the square hole 304 intercommunication under two first riser 303, bottom plate 301 deviates from the both sides of first riser 303 one end and has all set firmly the second riser 306, the one end that the second riser 306 deviates from the first riser is seted up the spread groove 307 with the 100 adaptations of spare part, second mounting hole 201 has been seted up to spare part two.

Aiming at the related technologies, the inventor thinks that machine welding is generally adopted when the auxiliary oil tank rear support is machined at present, a workbench is generally required to drive each part to move and adjust the position in the machine welding process, a welding gun is aligned to the position to be welded by matching with the movement of the welding gun, the phenomenon that the part is easy to slide when the workbench moves is caused, and the welding precision is low.

Disclosure of Invention

In order to improve welding precision, this application provides a bellytank after-poppet seam anchor clamps.

The application provides a bellytank after-poppet welds anchor clamps adopts following technical scheme:

the utility model provides a bellytank after-poppet seam anchor clamps, includes the mounting panel, mounting panel one end has set firmly the stand, and the stand upper end is equipped with a spacing first active grab to spare part, and the mounting panel is equipped with second active grab, the third active grab that second of restriction spare part removed along its length direction along deviating from the mounting panel direction removal, and the mounting panel sets firmly the locating piece respectively with two first mounting hole adaptations.

Through adopting above-mentioned technical scheme, the user utilizes in the first mounting hole that the locating piece embedding corresponds, fix a position and spacing to spare part three, then arrange spare part two in spare part one top, utilize second quick clamp and third quick clamp to carry on spacingly to spare part two, then with in the spare part tip embedding spread groove, utilize first quick clamp to carry on spacingly to spare part one, spare part one this moment, relative position between spare part two and the spare part three is difficult for changing, be favorable to improving welding precision.

Optionally, the mounting panel sets firmly the locating lever with the one end adaptation of second mounting hole, and the locating lever height is greater than the height of first riser.

Through adopting above-mentioned technical scheme, the locating lever extends to two tops of spare part through the second mounting hole, plays location and limiting displacement to spare part two, is favorable to improving welding precision.

Optionally, a supporting table is fixedly arranged in the middle of the mounting plate in the length direction, and the second quick clamp is rotatably connected with the supporting table.

Through adopting above-mentioned technical scheme, when installing and dismantling spare part two and spare part three, the user can rotate the second active grab, makes its depression bar move to spare part two one side, and the dismouting of spare part two and spare part three is difficult for influencing by the second active grab.

Optionally, two limiting plates are arranged in the middle of the stand column, the two limiting plates are located on two sides of the stand column in the width direction respectively, and the distance between the two limiting plates is matched with the width of the first part.

Through adopting above-mentioned technical scheme, the user arranges part one in between two limiting plates, is convenient for fix a position part one, and limiting plate cooperation first active grab is spacing part one from the equidirectional not simultaneously, and part one is difficult for taking place to remove, is favorable to improving welding precision.

Optionally, the pressing rod of the first rapid clamp, the pressing rod of the second rapid clamp and the pressing rod of the third rapid clamp are all fixedly provided with a backing plate, and the area of the backing plate is larger than the sectional area of the corresponding pressing rod.

Through adopting above-mentioned technical scheme, the depression bar that the backing plate increase corresponds and the area of contact of the different spare parts of back oil tank auxiliary stand, and then is favorable to improving the limiting displacement to different spare parts, is favorable to improving welding precision.

Optionally, the stand deviates from the one end of mounting panel and rotates and be connected with spacing dish, and spacing dish one side is equipped with the spacing portion that is used for restricting a spare part position, and the opposite side is equipped with the portion of dodging that is used for cancelling spacing dish to a spare part limiting displacement.

Through adopting above-mentioned technical scheme, when spacing dish rotates to spacing portion and is close to spare part, restriction spare part one along self length direction's removal, spacing dish rotates to dodging the portion and is close to spare part one for the moment, and spacing dish no longer carries on spacingly to spare part one, and then is convenient for install and remove spare part one, and simple structure controls conveniently.

Optionally, the intermediate position of mounting panel has set firmly two location platforms that are parallel to each other, two location platforms deviate from the interval of mounting panel one end and the width looks adaptation of spare part two, the equal sliding connection in one side that two location platforms are close to each other has the stopper, equal fixedly connected with elastic component between two stoppers and the location platform that corresponds, the terminal surface that two stoppers are close to each other is the inclined plane, and the interval of two stoppers diminishes along the direction that is close to the mounting panel gradually, interval and the bottom plate width looks adaptation that two location platforms are close to mounting panel one end, the interval and the bottom plate thickness looks adaptation of stopper and mounting panel.

Through adopting above-mentioned technical scheme, when installation spare part three, the user pushes down the bottom plate and enlarges the interval of two stoppers through the inclined plane, and then makes the bottom plate remove to the stopper below, and the stopper rebounds under the elastic component effect, and restriction spare part three is keeping away from the ascending removal of mounting panel side, and tip fixes a position the bottom plate under the stopper, and the upper end is fixed a position spare part two, and the operation is comparatively convenient and is favorable to improving the machining precision.

Optionally, two the equal sliding connection in one side that the location platform deviates from the mounting panel has the clamp plate, and the tip all extends to the bar inslot that corresponds and contradicts with the inclined plane that corresponds the stopper under the clamp plate.

Through adopting above-mentioned technical scheme, the user pushes down the clamp plate and can control the interval grow of two stoppers, and then is convenient for dismantle three spare parts, and the operation is comparatively convenient.

Optionally, an adjusting block is fixedly arranged at the upper end of the positioning rod, and the positioning rod is rotatably connected with the mounting plate.

Through adopting above-mentioned technical scheme, after the adjusting block passed the second mounting hole, the locating lever rotated and made one side conflict that adjusting block and spare part two deviate from the mounting panel, and then made spare part two be difficult for along the direction removal that deviates from the mounting panel, was favorable to improving welding precision.

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

by arranging the first quick clamp, the second quick clamp and the third quick clamp, a user can utilize the positioning block to be embedded into the corresponding first mounting hole to position and limit the third part, then place the second part above the first part, utilize the second quick clamp and the third quick clamp to limit the second part, then embed the lower end part of the first part into the connecting groove, utilize the first quick clamp to limit the first part, and at the moment, the relative positions of the first part, the second part and the third part are not easy to change, so that the welding precision is improved;

by arranging the limiting plates, a user can place the first part between the two limiting plates, so that the first part can be conveniently positioned, and meanwhile, the limiting plates are matched with the first quick clamp to limit the first part from different directions, so that the first part is not easy to move, and the welding precision is improved;

through setting up stopper and elastic component, when installation spare part three, the user pushes down the bottom plate and enlarges the interval of two stoppers through the inclined plane, and then makes the bottom plate remove to the stopper below, and the stopper rebounds under the elastic component effect, and restriction spare part three is keeping away from the ascending removal of mounting panel side, and tip fixes a position the bottom plate under the stopper, and the upper end is fixed a position spare part two, and the operation is comparatively convenient and is favorable to improving the machining precision.

Drawings

Fig. 1 is a schematic view of the overall structure of a rear bracket of a secondary fuel tank.

Fig. 2 is a schematic view of the overall structure of embodiment 1 of the present application.

Fig. 3 is a schematic view of the overall structure of embodiment 2 of the present application.

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

Description of reference numerals: 100. a first part; 200. a second part; 201. a second mounting hole; 300. a third part; 301. a base plate; 302. a first mounting hole; 303. a first vertical plate; 304. a square hole; 305. an arc-shaped hole; 306. a second vertical plate; 307. connecting grooves; 1. mounting a plate; 11. a column; 111. a first quick clamp; 112. a limiting plate; 12. a support table; 121. a second quick clamp; 13. a third quick clamp; 14. positioning blocks; 15. positioning a rod; 151. an adjusting block; 2. a base plate; 3. a limiting disc; 31. a limiting part; 32. an avoidance part; 4. a positioning table; 41. a limiting block; 411. a slide bar; 42. an elastic member; 43. pressing a plate; 44. a chute.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses welding fixture for a rear support of an auxiliary oil tank.

Example 1:

referring to fig. 1 and 2, a welding fixture for a rear support of an auxiliary oil tank comprises a mounting plate 1, the mounting plate 1 is mounted on a welding workbench by a user during machining, the workbench is controlled to enable the upper end face of the mounting plate 1 to be horizontal, then a first part 100, a second part 200 and a third part 300 are manually arranged above the mounting plate 1 in sequence, then welding guns are used for moving to match with the workbench to move to weld different positions, a limiting device is mounted on one side, deviating from the workbench, of the mounting plate 1, the first part 100, the second part 200 and the third part 300 are not prone to relative movement under the action of the limiting device, and welding precision is high.

Referring to fig. 1 and 2, two positioning blocks 14 are fixedly mounted on a mounting plate 1, a user aligns two first mounting holes 302 of a component part 300 with the two positioning blocks 14 respectively, the two positioning blocks 14 are in a truncated cone shape, the diameters of the two positioning blocks 14 are gradually smaller along the direction departing from the mounting plate 1, the two positioning blocks 14 are inserted into the two first mounting holes 302 respectively, the diameter of one end, close to the mounting plate 1, of each positioning block 14 is matched with the aperture of the corresponding first mounting hole 302, namely, the edge of each positioning block 14 is abutted against the inner wall corresponding to the corresponding first mounting hole 302, and the component part 300 is not easy to slide on the mounting plate 1 under the action of the positioning blocks 14.

Referring to fig. 1 and 2, the mounting plate 1 is fixedly provided with a vertical column 11, the length direction of the vertical column 11 is perpendicular to the plane of the mounting plate 1, and at this time, one end of the third component 300, which is provided with a second vertical plate 306, abuts against the lower end of the vertical column 11; then the user arranges part two 200 in the one side that part three 300 deviates from mounting panel 1, makes the one end that part two 200 buckled be close to part three 300 and installs the one end of first riser 303, and mounting panel 1 fixed mounting has locating lever 15, and locating lever 15 is round rod-shaped, and its axis is perpendicular with mounting panel 1 up end, and locating lever 15 length is longer and passes second mounting hole 201 and extend to one side that part two 200 deviates from mounting panel 1.

Referring to fig. 1 and 2, the limiting device comprises a first quick clamp 111, a second quick clamp 121 and a third quick clamp 13, the third quick clamp 13 is a push-pull type quick clamp, and a user controls a pressure rod of the third quick clamp 13 to be close to one bent end of a second part 200 by using a manual rocker of the third quick clamp; the pressing rod of the first rapid clamp 111, the pressing rod of the second rapid clamp 121 and the pressing rod of the third rapid clamp 13 are fixedly provided with the backing plate 2, the backing plate 2 moves along with the corresponding pressing rod, the backing plate 2 of the third rapid clamp 13 pushes the second part 200 to move along the length direction, one end of the second part 200, which is bent, is abutted against the two first vertical plates 303, and the second part 200 is not easy to move along the length direction accidentally.

Referring to fig. 1 and 2, the second mounting hole 201 is composed of two through holes with different diameters, the middle positions of the two through holes are communicated, the diameter of the through hole at one end, away from the second part 200, of the bent end is smaller, the positioning rod 15 is abutted against the hole wall of the smaller through hole at the moment, the diameter of the positioning rod 15 is matched with the diameter of the smaller through hole, and the second part 200 is not prone to moving along the plane direction of the mounting plate 1 under the action of the positioning rod 15 at the moment.

Referring to fig. 1 and 2, a supporting table 12 is fixedly mounted on a mounting plate 1, a horizontal type quick clamp is adopted by a second quick clamp 121, the second quick clamp 121 is mounted at one end of the supporting table 12 departing from the mounting plate 1 and is rotatably connected with the supporting table 12, a user moves a pressing rod of the second quick clamp 121 to one side of the part two 200 departing from the mounting plate 1, then the pressing rod and a cushion plate 2 are controlled to move synchronously by utilizing a manual rocker of the user, until the corresponding cushion plate 2 abuts against the middle position of the part two 200 in the length direction, better limiting capacity is provided for two ends of the part two 200, the part two 200 is not easy to move along the direction departing from the mounting plate 1 under the action of the second quick clamp 121.

Referring to fig. 1 and 2, a user inserts one end of the first part 100 in the length direction into the connecting groove 307 of the third part 300, at this time, one end of the second part 200 departing from the bent portion thereof abuts against the first part 100, and simultaneously, one side of the first part 100 departing from the second part 200 abuts against the upright post 11; two limiting plates 112 are installed to the intermediate position of stand 11, and limiting plate 112 all is located stand 11 and is close to one side of third active grab 13 and with stand 11 fixed connection, and stand 11 is located between two limiting plates 112 this moment, and the interval between two limiting plates 112 and the width looks adaptation of spare part 100, stand 11 supports tightly with two limiting plates 112 simultaneously promptly, and the removal of self width direction is followed to spacing spare part 100 of two limiting plates 112.

Referring to fig. 1 and 2, a limiting disc 3 is installed at one end, deviating from mounting plate 1, of upright post 11, limiting disc 3 is rotatably connected with upright post 11 and is provided with a limiting portion 31, a user rotates limiting disc 3 to enable limiting portion 31 to rotate to one side, close to part one 100, of upright post 11, the edge of limiting portion 31 is far away from the rotating shaft of limiting disc 3, at the moment, limiting portion 31 moves to the top of part one 100, and abuts against the end, deviating from part three 300, of part one 100, and at the moment, part one 100 is not easy to move in the length direction of the part one 100.

Referring to fig. 1 and 2, the first quick clamp 111 is installed at one end of the upright post 11 away from the installation plate 1 and adopts a horizontal quick clamp, a user controls a pressure rod of the first quick clamp 111 to abut against one side of the first part 100 away from the upright post 11 by using a manual swing rod, the first part 100 is not easy to move in a direction away from the upright post 11, the user starts a welding gun to start welding at the moment, the first part 100, the second part 200 and the third part 300 are not easy to move accidentally in the moving process of the workbench, and the welding precision is high.

Referring to fig. 1 and 2, a welding gun welds a contact position of the first riser 303 and the second component 200, a contact position of the second riser 306 and the first component 100, and a contact position of the second component 200 and the first component 100; after the welding is completed, the user manually opens the first quick clamp 111, the second quick clamp 121 and the third quick clamp 13, and then manually controls the second quick clamp 121 and the support platform 12 to rotate relatively, so that the pressing rod thereof is away from the upper part of the second part 200.

Referring to fig. 1 and 2, then rotate spacing dish 3 and make spacing portion 31 rotate to the one side that stand 11 deviates from spare part 100, spacing dish 3 is equipped with dodges portion 32, dodge portion 32 this moment and rotate to the one side that stand 11 is close to spare part 100, it is nearer apart from the distance of spacing dish 3 axis of rotation to dodge portion 32 edge, no longer contradict to the one end that spare part 100 deviates from mounting panel 1, the user removes the finished product to the direction of keeping away from mounting panel 1 this moment, make locating lever 15 break away from second mounting hole 201, the completion is to the dismantlement of finished product, and then carry out next duty cycle.

The implementation principle of the embodiment 1 of the application is as follows: after a user arranges the first part 100, the second part 200 and the third part 300 according to positions, the pressing rods manually control the first quick clamp 111, the second quick clamp 121 and the third quick clamp 13 to limit workpieces from different positions, and the first part 100, the second part 200 and the third part 300 are not easy to accidentally move in the moving process of the workbench by matching with the limiting effects of the limiting disc 3 and the positioning block 14, so that the welding precision is high.

Example 2:

referring to fig. 3 and 4, the main difference between the present embodiment and embodiment 1 is that the mounting plate 1 is fixedly mounted with two positioning tables 4, the two positioning tables 4 are parallel to each other, and the user places the bottom plate 301 of the component three 300 between the two positioning tables 4; stopper 41 is all installed to one side that two location platforms 4 are close to each other, and the terminal surface that two stopper 41 are close to each other is the inclined plane, and two stopper 41 diminish gradually along the direction interval that is close to mounting panel 1, and the both sides of bottom plate 301 contradict with the inclined plane of two stopper 41 respectively.

Refer to fig. 3 and fig. 4, two location platform 4 all set up the spout 44 with stopper 41 adaptation, stopper 41 is close to the equal fixed mounting in one side that corresponds location platform 4 has three slide bars 411, slide bar 411 sets up along the equidistant length direction that corresponds stopper 41, location platform 4 all sets up the straight hole three and the adaptation of slide bar 411, the straight hole all communicates with the spout 44 that corresponds, three slide bars 411 imbed respectively in the straight hole that corresponds, stopper 41 slides to spout 44 under the squeezing action of bottom plate 301, slide bar 411 slides in the straight hole and plays limiting displacement to stopper 41's direction of movement.

Referring to fig. 3 and 4, the sliding grooves 44 are internally provided with elastic members 42, the elastic members 42 are made of rubber blocks, two ends of each elastic member 42 are fixedly connected with the limiting block 41 and the positioning table 4 respectively, at this time, the elastic members 42 are compressed, when the bottom plate 301 is in contact with the mounting plate 1, the limiting blocks 41 rebound under the action of the elastic members 42, the limiting blocks 41 and the bottom plate 301 are abutted against one side departing from the mounting plate 1, and simultaneously, the lower end parts of the two positioning tables 4 are abutted against two sides of the bottom plate 301 respectively, so as to limit the component three 300; meanwhile, the upper end parts of the two positioning tables 4 are respectively abutted against the two sides of the second part 200, so that the second part 200 is limited, and the operation process is convenient and quick.

Referring to fig. 1, 3 and 4, when a user places a second part 200 on a side of the first part 100 away from the mounting plate 1, the positioning rod 15 abuts against a side wall of a through hole with a larger diameter at the second mounting hole 201, and at this time, the positioning rod 15 cooperates with the upright post 11 to limit the movement of the second part 200 in the length direction of the second part, so that the third quick clamp 13 does not need to be manually adjusted by the user, the operation is simplified, and the space of the mounting plate 1 is saved; adjusting block 151 is fixedly mounted at the upper end of positioning rod 15, and adjusting block 151 is located on one side of positioning rod 15 close to the smaller-diameter through hole and moves to one side of two component parts 200 departing from mounting plate 1 along with positioning rod 15 passing through second mounting hole 201.

Referring to fig. 3 and 4, the positioning rod 15 is rotatably connected with the mounting plate 1, the user manually rotates the positioning rod 15 to drive the adjusting block 151 to rotate synchronously with the positioning rod 15, the adjusting block 151 gradually collides with one side of the second part 200 departing from the mounting plate 1 when moving, and then the second part 200 is limited, the second part 200 is not easy to move in the direction of departing from the mounting plate 1, the user does not need to operate the second quick clamp 121, and the operation process is simplified.

Referring to fig. 3 and 4, pressing plates 43 are respectively installed on the sides, away from the installation plate 1, of the two positioning tables 4, the pressing plates 43 are respectively in sliding connection with the corresponding positioning tables 4, and after welding is completed, a user presses down the two pressing plates 43; the one end that clamp plate 43 is close to mounting panel 1 all contradicts with the inclined plane that corresponds stopper 41, and two stoppers 41 remove to the spout 44 that corresponds under the effect of clamp plate 43, then the user rotates locating lever 15 and makes adjusting block 151 no longer contact with two 200 of spare part, can cancel the limiting displacement to two 200 of spare part and three 300 of spare part fast, then dismantle the finished product, and operation process is more convenient.

The implementation principle of embodiment 2 of the present application is as follows: a user places the bottom plate 301 of the component three 300 between the two positioning tables 4, two sides of the bottom plate 301 respectively abut against inclined surfaces of the two limiting blocks 41, the limiting blocks 41 slide towards the sliding grooves 44 under the extrusion action of the bottom plate 301, when the bottom plate 301 contacts the mounting plate 1, the limiting blocks 41 rebound under the action of the elastic pieces 42, the limiting blocks 41 abut against one side of the bottom plate 301 away from the mounting plate 1, and meanwhile, lower end parts of the two positioning tables 4 respectively abut against two sides of the bottom plate 301, so that the component three 300 is limited; simultaneously, the upper end parts of the two positioning tables 4 are respectively abutted against the two sides of the second part 200, so that the second part 200 is limited, the positioning rod 15 is abutted against the side wall of the through hole with the larger diameter of the second mounting hole 201, the positioning rod 15 is matched with the upright post 11 to limit the movement of the second part 200 in the length direction, the positioning rod 15 is manually rotated by a user, the adjusting block 151 is gradually abutted against one side, deviating from the mounting plate 1, of the second part 200 when moving, and further, the limiting effect is realized on the second part 200.

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

Claims (9)

1. The utility model provides a bellytank after-poppet seam anchor clamps, includes mounting panel (1), its characterized in that: mounting panel (1) one end has set firmly stand (11), and stand (11) upper end is equipped with first quick-operation clamp (111) spacing to spare part (100), and mounting panel (1) is equipped with second quick-operation clamp (121) that restriction spare part two (200) removed along deviating from mounting panel (1) direction, third quick-operation clamp (13) that restriction spare part two (200) removed along its length direction, and mounting panel (1) sets firmly locating piece (14) with two first mounting hole (302) adaptations respectively.

2. The welding clamp for the rear bracket of the auxiliary fuel tank as claimed in claim 1, wherein: mounting panel (1) set firmly locating lever (15) with the one end adaptation of second mounting hole (201), and locating lever (15) height is greater than the height of first riser (303).

3. The welding clamp for the rear bracket of the auxiliary fuel tank as claimed in claim 1, wherein: a supporting table (12) is fixedly arranged in the middle of the mounting plate (1) in the length direction, and a second quick clamp (121) is rotatably connected with the supporting table (12).

4. The welding clamp for the rear bracket of the auxiliary fuel tank as claimed in claim 1, wherein: two limiting plates (112) are arranged in the middle of the upright column (11), the two limiting plates (112) are respectively located on two sides of the width direction of the upright column (11), and the distance between the two limiting plates (112) is matched with the width of the first part (100).

5. The welding clamp for the rear bracket of the auxiliary fuel tank as claimed in claim 1, wherein: backing plates (2) are fixedly arranged at the positions of the pressing rod of the first rapid clamp (111), the pressing rod of the second rapid clamp (121) and the pressing rod of the third rapid clamp (13), and the areas of the backing plates (2) are larger than the sectional areas of the corresponding pressing rods.

6. The welding clamp for the rear bracket of the auxiliary fuel tank as claimed in claim 1, wherein: the one end that stand (11) deviates from mounting panel (1) rotates and is connected with spacing dish (3), and spacing dish (3) one side is equipped with spacing portion (31) that are used for restricting part (100) position, and the opposite side is equipped with and is used for canceling spacing dish (3) to part (100) limiting displacement dodge portion (32).

7. The welding clamp for the rear bracket of the auxiliary fuel tank as claimed in claim 2, wherein: the intermediate position of mounting panel (1) has set firmly two location platform (4) that are parallel to each other, two location platform (4) deviate from the interval of mounting panel (1) one end and the width looks adaptation of spare part two (200), the equal sliding connection in one side that two location platform (4) are close to each other has stopper (41), equal fixed connection has elastic component (42) between two stopper (41) and the location platform (4) that correspond, the terminal surface that two stopper (41) are close to each other is the inclined plane, and the interval of two stopper (41) diminishes along the direction that is close to mounting panel (1) gradually, the interval and bottom plate (301) width looks adaptation that two location platform (4) are close to mounting panel (1) one end, the interval and the thickness looks adaptation of bottom plate (301) of stopper (41) and mounting panel (1).

8. The welding clamp for the rear bracket of the auxiliary fuel tank as claimed in claim 7, wherein: two the equal sliding connection in one side that location platform (4) deviates from mounting panel (1) has clamp plate (43), and the tip all extends to the bar inslot that corresponds and contradicts with the inclined plane that corresponds stopper (41) under clamp plate (43).

9. The welding clamp for the rear bracket of the auxiliary fuel tank as claimed in claim 7, wherein: an adjusting block (151) is fixedly arranged at the upper end part of the positioning rod (15), and the positioning rod (15) is rotatably connected with the mounting plate (1).

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