CN209830761U

CN209830761U - Motorcycle head pipe welding clamp

Info

Publication number: CN209830761U
Application number: CN201822090117.XU
Authority: CN
Inventors: 王亚军; 赵正东
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2018-12-13
Filing date: 2018-12-13
Publication date: 2019-12-24
Anticipated expiration: 2028-12-13

Abstract

The utility model provides a motorcycle head pipe welding jig belongs to the motorcycle and makes technical field. The welding fixture solves the problems of complex structure, high manufacturing cost and low positioning precision of the existing welding fixture for the motorcycle head pipe. This motorcycle head pipe welding jig, including the base with locate the location axle on the base, the location axle is worn to establish in the locomotive intraductally and location axle and locomotive pipe cooperation setting, the lower extreme of location axle is equipped with the location step, location step department is equipped with and is used for adjusting the regulation structure of locomotive pipe height, the lower extreme of locomotive pipe supports and leans on adjusting the structure, the upper end of location axle is equipped with the limit structure who is used for preventing the locomotive pipe from deviating from. The utility model has the advantages of simple structure, high positioning precision, wide application range and the like.

Description

Motorcycle head pipe welding clamp

Technical Field

The utility model belongs to the technical field of the motorcycle is made, a welding jig of motorcycle, especially a motorcycle head pipe welding jig are related to.

Background

In manufacturing a frame of a motorcycle, it is necessary to weld a head pipe and other workpieces such as a frame together at a certain angle. In the welding process, because a clamp for clamping and positioning the head pipe is not arranged, the welded part is often moved during welding, so that an operator must continuously adjust the position of the part, the welding position is inaccurate, and the quality of a product is influenced.

In order to solve the above problems, the chinese patent discloses a welding jig for a head pipe [ No. CN2875678U granted publication ], which comprises a substrate, a head pipe mounting seat and a head pipe support die fixedly disposed on the substrate, and a first workpiece mounting seat and a second workpiece mounting seat fixedly disposed on the substrate, wherein a head pipe pressing die is slidably disposed between the head pipe mounting seat and the head pipe support die, a limit plate support die is slidably disposed between the first workpiece mounting seat and the head pipe support die, a limit block support die is further disposed between the second workpiece mounting seat and the head pipe support die, and a pressing die is pivotally disposed between the second workpiece mounting seat and the limit block support die. The head tube is compressed tightly between the head tube pressing die and the head tube supporting die, the limiting plate is compressed tightly between the limiting plate supporting die and the head tube, and the limiting block is compressed tightly between the pressing die and the head tube, so that the welding position is more accurate, and the welding efficiency and the product quality are improved.

However, the following problems still exist: the structure is complex, the air cylinder is used for driving, and the manufacturing cost is high; the radial positioning of the head pipe cannot be carried out, and the positioning precision is low; because the height of the die holder of the head tube is constant, the welding position of the head tube and the limiting block cannot be changed, and the application range is small; the positioning process is complex and the flexibility is poor.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a can realize motorcycle head pipe welding jig of axial and radial positioning.

The purpose of the utility model can be realized by the following technical proposal:

the motorcycle head pipe welding fixture comprises a base and a positioning shaft arranged on the base, and is characterized in that the positioning shaft penetrates through the head pipe and is arranged in a matching manner with the head pipe, a positioning step is arranged at the lower end of the positioning shaft, an adjusting structure used for adjusting the height of the head pipe is arranged at the position of the positioning step, the lower end of the head pipe is abutted against the adjusting structure, and a limiting structure used for preventing the head pipe from being separated from the adjusting structure is arranged at the upper end of the positioning shaft. The height of adjusting the structure is adjusted well, and the head tube is sleeved on the positioning shaft, so that the lower end of the head tube is supported against the adjusting structure, and then the head tube is prevented from being separated through the limiting structure, and the purpose of positioning the head tube is achieved. The outer diameter of the positioning shaft is equal to the inner diameter of the head pipe, so that radial movement of the head pipe can be prevented, and positioning accuracy is improved.

In the welding fixture for the motorcycle head pipe, the limiting structure comprises a gland sleeved on the positioning shaft and a locking assembly used for positioning the gland, and the gland is abutted against the upper end of the head pipe under the action of the locking assembly. The outer diameter of the gland is larger than that of the head pipe so as to fix the head pipe.

In the welding fixture for the motorcycle head pipe, the locking assembly comprises a screw rod and a nut, the screw rod is arranged at the upper end of the positioning shaft, the axis of the screw rod is parallel to the axis of the positioning shaft, the nut is arranged on the screw rod in a threaded fit mode, a through hole is formed in the gland, the screw rod penetrates through the through hole, and the nut is pressed on the upper side face of the gland. When the lathe head pipe is sleeved on the positioning shaft, the gland is sleeved on the screw rod, the nut is sleeved on the screw rod, the gland is pushed to move downwards along the screw rod under the thrust action of the nut during screwing, and the gland is known to abut against the lathe head pipe. The diameter of the screw is smaller than that of the positioning shaft.

In the welding jig for the motorcycle head pipe, the screw is coaxial with the positioning shaft.

In the welding fixture for the motorcycle head pipe, the adjusting structure comprises a gasket sleeved on the positioning shaft, the lower end surface of the gasket is abutted against the positioning step, and the lower end of the motorcycle head pipe is abutted against the gasket. The height of the head tube can be adjusted by selecting the gaskets with different thicknesses or by selecting different numbers of gaskets, so that the positioning of various head tubes can be met, and the application range is wide.

In the welding fixture for the motorcycle head pipe, the base comprises a bottom plate located below and a top plate located above, the top plate is arranged in an inclined mode, a first positioning hole is formed in the top plate, a limiting column extending into the first positioning hole is arranged at the lower end of the positioning shaft, and a second positioning hole is formed in the bottom plate. The outer diameter of the limiting column is equal to the diameter of the first positioning hole, and after the limiting column is inserted into the first positioning hole, the lower end of the positioning shaft is abutted against the top plate, so that the positioning of the positioning shaft is realized. The second positioning hole can be used for connecting the bottom plate with the supporting seat positioned below the bottom plate.

In the welding fixture for the motorcycle head pipe, the top plate is hinged with the bottom plate, and the bottom plate is provided with an adjusting component for adjusting the inclination angle of the top plate.

In the welding fixture for the motorcycle head pipe, the bottom plate is provided with a threaded hole, the adjusting component comprises a bolt in threaded connection with the threaded hole, and a rod head of the bolt abuts against the top plate. The bolt can be rotated to control the length of the bolt extending upwards, so that the aim of adjusting the inclination angle of the top plate is fulfilled, and the adjustment is convenient. The supporting seat below the bottom plate is U-shaped, and a yielding cavity for accommodating the bolt is formed in the supporting seat.

Compared with the prior art, this motorcycle head pipe welding jig has following advantage:

can fix a position the locomotive pipe fast, the stability of locating good back locomotive pipe is good, and anchor clamps's simple structure, the centre gripping is effectual, and use cost is low, can satisfy moreover and carry out the clamping to the locomotive pipe of unidimensional not, and application scope is wide.

Drawings

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

Fig. 2 is a cross-sectional view of a first embodiment of the present invention.

Fig. 3 is a cross-sectional view of a second embodiment of the present invention.

In the figure, a head pipe; 1. positioning the shaft; 2. positioning a step; 3. a gland; 4. a screw; 5. a nut; 6. a base plate; 7. a top plate; 8. a first positioning hole; 9. a limiting column; 10. a second positioning hole; 11. and (4) bolts.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

The motorcycle head pipe welding fixture shown in the figures 1 and 2 comprises a base and a positioning shaft 1 arranged on the base, wherein the positioning shaft 1 is arranged in a head pipe a in a penetrating mode and the positioning shaft 1 is arranged in a matching mode with the head pipe a, a positioning step 2 is arranged at the lower end of the positioning shaft 1, an adjusting structure used for adjusting the height of the head pipe a is arranged at the position of the positioning step 2, the lower end of the head pipe a abuts against the adjusting structure, and a limiting structure used for preventing the head pipe a from being separated from the upper end of the positioning shaft 1. The height of adjusting the structure is adjusted well, and the lower extreme that makes the locomotive pipe a on emboliaing location axle 1 with locomotive pipe a supports and leans on adjusting the structure, prevents afterwards through limit structure that locomotive pipe a from deviating from, reaches the purpose of fixing a position with locomotive pipe a. The outer diameter of the positioning shaft 1 is equal to the inner diameter of the head pipe a, so that the radial movement of the head pipe a can be prevented, and the positioning precision is improved.

As shown in fig. 2, the limiting structure comprises a gland 3 sleeved on the positioning shaft 1 and a locking assembly for positioning the gland 3, and the gland 3 abuts against the upper end of the head pipe a under the action of the locking assembly. The outer diameter of the gland 3 should be larger than that of the head pipe a to fix the head pipe a. Specifically, as shown in fig. 2, the locking assembly includes a screw rod 4 and a nut 5, the screw rod 4 is disposed at the upper end of the positioning shaft 1, the axis of the screw rod is parallel to the axis of the positioning shaft 1, the nut 5 is disposed on the screw rod 4 in a threaded fit manner, a through hole is formed in the gland 3, the screw rod 4 is disposed in the through hole in a penetrating manner, and the nut 5 is pressed on the upper side surface of the gland 3. When the vehicle head pipe a is sleeved on the positioning shaft 1, the gland 3 is sleeved on the screw rod 4, the nut 5 is sleeved on the screw rod 4, the gland 3 is pushed to move downwards along the screw rod 4 under the thrust action of the nut 5 during screwing, and the gland 3 is known to abut against the vehicle head pipe a. The diameter of the screw 4 is smaller than that of the positioning shaft 1.

Wherein, the screw rod 4 is coaxial with the positioning shaft 1.

In this embodiment, the adjusting structure includes a spacer sleeved on the positioning shaft 1, the lower end surface of the spacer abuts against the positioning step 2, and the lower end of the head pipe a abuts against the spacer. The height of the head tube a can be adjusted by selecting the gaskets with different thicknesses or selecting different numbers of gaskets, so that the positioning of various head tubes a can be met, and the application range is wide.

As shown in fig. 1 and 2, the base comprises a bottom plate 6 located below and a top plate 7 located above, the top plate 7 is arranged obliquely, a first positioning hole 8 is formed in the top plate 7, a limiting column 9 extending into the first positioning hole 8 is arranged at the lower end of the positioning shaft 1, and a second positioning hole 10 is formed in the bottom plate 6. The outer diameter of the limiting column 9 is equal to the aperture of the first positioning hole 8, and after the limiting column 9 is inserted into the first positioning hole 8, the lower end of the positioning shaft 1 abuts against the top plate 7, so that the positioning of the positioning shaft 1 is realized. The second positioning hole 10 can be used for connecting the bottom plate 6 with the supporting seat located therebelow.

Example two

The structure principle of the present embodiment is basically the same as that of the first embodiment, except that, as shown in fig. 3, the top plate 7 is hinged to the bottom plate 6, and the bottom plate 6 is provided with an adjusting component for adjusting the inclination angle of the top plate 7.

As shown in fig. 3, the bottom plate 6 has a threaded hole, and the adjusting member includes a bolt 11 threaded in the threaded hole, and the head of the bolt 11 abuts against the top plate 7. The bolt 11 can be rotated to control the length of the bolt 11 extending upwards, so that the purpose of adjusting the inclination angle of the top plate 7 is achieved, and the adjustment is convenient. The support base under the bottom plate 6 is U-shaped and shaped as shown in fig. 1, and has an abdicating cavity therein for receiving the bolt 11.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a motorcycle head pipe welding jig, includes the base and locates location axle (1) on the base, its characterized in that, location axle (1) wear to establish in head pipe (a) just location axle (1) and head pipe (a) cooperation set up, the lower extreme of location axle (1) is equipped with location step (2), location step (2) department be equipped with and be used for adjusting the regulation structure of head pipe (a) height, the lower extreme of head pipe (a) supports and leans on adjusting the structure, the upper end of location axle (1) is equipped with the limit structure who is used for preventing that head pipe (a) from deviating from.

2. The motorcycle head pipe welding jig of claim 1, characterized in that the limiting structure comprises a gland (3) sleeved on the positioning shaft (1) and a locking assembly for positioning the gland (3), and the gland (3) is abutted against the upper end of the head pipe (a) under the action of the locking assembly.

3. The motorcycle head pipe welding fixture according to claim 2, wherein the locking assembly comprises a screw rod (4) arranged at the upper end of the positioning shaft (1) and having an axis parallel to the axis of the positioning shaft (1), and a nut (5) arranged on the screw rod (4) in a threaded fit manner, a through hole is formed in the gland (3), the screw rod (4) is arranged in the through hole in a penetrating manner, and the nut (5) is pressed on the upper side surface of the gland (3).

4. The motorcycle head pipe welding jig according to claim 3, characterized in that the screw (4) is coaxial with the positioning shaft (1).

5. The motorcycle head pipe welding jig according to claim 1 or 2 or 3 or 4, characterized in that the adjusting structure comprises a gasket sleeved on the positioning shaft (1), the lower end surface of the gasket abuts against the positioning step (2), and the lower end of the head pipe (a) abuts against the gasket.

6. The motorcycle head pipe welding jig according to claim 1, 2, 3 or 4, characterized in that the base comprises a bottom plate (6) positioned below and a top plate (7) positioned above, the top plate (7) is obliquely arranged, a first positioning hole (8) is formed in the top plate (7), a limiting column (9) extending into the first positioning hole (8) is arranged at the lower end of the positioning shaft (1), and a second positioning hole (10) is formed in the bottom plate (6).

7. The motorcycle head pipe welding fixture according to claim 6, wherein the top plate (7) is hinged with the bottom plate (6), and the bottom plate (6) is provided with an adjusting component for adjusting the inclination angle of the top plate (7).

8. A motorcycle head pipe welding jig according to claim 7, characterized in that the bottom plate (6) has a threaded hole therein, and the adjusting member comprises a bolt (11) threadedly engaged in the threaded hole, a head of the bolt (11) abutting against the top plate (7).