Positioning device for axle welding

Abstract

A positioning device for axle welding comprises a base, two supporting seats, a movable seat, two sliding seats and a driving cylinder, wherein the two sliding seats are located on the two sides of the movable seat respectively. The movable seat and the two sliding seats are installed on the base in a sliding mode so as to have the freedom degree of moving in the length direction of the base, and the movable seat is provided with a positioning part used for placing and positioning the height limiting plate. The two sliding seats are each fixedly connected with a pushing piece, and the pushing pieces on the two sliding seats are used for pushing the two brake bottom plates on the shaft tube. A gear is pivoted to the movable seat, a rack extending in the length direction of the base is fixedly connected to each of the two sliding seats, and the racks are combined to the two sides of the gear respectively; a cylinder body of the driving cylinder is fixed to the movable base, and the telescopic rod is fixedly connected to one sliding base. According to the utility model, the welding efficiency of the axle is improved, and the welding precision of the height limiting plate and the axle tube is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle chassis parts processing, in particular to a positioning device for axle welding. Background Art

[0002] An axle usually includes an axle tube and multiple accessories connected to the axle tube. When welding these accessories, it is usually necessary to use a positioning device to position the axle tube. For example, the height limit plate on the axle tube is generally fixedly welded in the middle of the length direction of the axle tube. When welding the height limit plate to the axle tube, the axle tube is positioned using a positioning device, and then the axle tube is measured in the length direction, the center position of the axle tube is marked, and the height limit plate is welded at the marked position. This welding method results in low welding efficiency and accuracy of the axle. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a positioning device for axle welding, which is used to improve the welding accuracy between the height limiting plate and the axle tube and improve the efficiency of axle welding.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A positioning device for axle welding, comprising a base, two support seats respectively located at both ends of the base to support both ends of the axle tube, a movable seat, two slide seats respectively located at both sides of the movable seat, and a driving cylinder;

[0006] The movable seat and the two slides are slidably mounted on the base to have the freedom to move in the length direction of the base, and the movable seat is provided with a positioning portion for placing and positioning the height limit plate; the two slides are respectively fixedly connected with a push piece, and the push pieces on the two slides are respectively used to push the two brake bottom plates on the shaft tube;

[0007] A gear is pivotally connected to the movable seat, and a rack extending along the length direction of the base is fixedly connected to the two sliding seats, and the racks are respectively combined with two sides of the gear;

[0008] The cylinder body of the driving cylinder is fixed on the movable seat, and the telescopic rod is fixedly connected to one of the sliding seats.

[0009] A positioning seat which can slide relative to the movable seat along the width direction of the base is arranged on the top of the movable seat, and the positioning part is arranged on the positioning seat.

[0010] The positioning seat includes a positioning plate installed on the top of the movable seat through a first linear guide rail whose extension direction is consistent with the width direction of the base, and a support plate. Two cantilevers are arranged at one end of the positioning plate facing the middle of the width direction of the base. The support plate is placed under the two cantilevers and is connected to the cantilevers by bolts. The support plate is provided with a boss embedded between the two cantilevers. The positioning portion is a positioning groove surrounded by the top surface of the boss and the opposite surfaces of the two cantilevers. A baffle located above the positioning groove is also connected between the two cantilevers. The center line of the positioning groove in the width direction is in the same plane as the rotation axis of the gear, and the plane is perpendicular to the length direction of the base.

[0011] A mounting surface is formed on the base, and a mounting seat is fixedly connected to the mounting surface. The mounting seat includes a vertical plate extending along the height direction of the base, and a second linear guide extending along the length direction of the base is fixed on the vertical plate. The movable seat and the two slides are slidably mounted on the second linear guide.

[0012] Two nitrogen springs are arranged on the mounting seat, the cylinder bodies of the two nitrogen springs are fixed on the mounting seat, and the piston rods of the two nitrogen springs are respectively pressed against the two sides of the movable seat.

[0013] The movable seat is provided with two guide holes staggered up and down and a mounting cavity located between the two guide holes. The two racks are respectively connected in the two guide holes, and the gear is located in the mounting cavity.

[0014] The pushing member is a pushing plate fixed on the sliding seat and away from one end of the movable seat.

[0015] A support seat is fixedly connected to the base, a lifting seat which can move up and down is installed on the support seat, and a limiting rod which extends along the length direction of the base and is inserted into a hole of one of the brake bottom plates on the shaft tube is fixedly connected to the lifting seat.

[0016] A V-shaped positioning groove for placing the end of the shaft tube is formed on the top of the support seat.

[0017] The beneficial effects of the utility model are:

[0018] The utility model drives one of the slide seats to move by driving a cylinder, and utilizes the matching structure of the gear and the rack to make the slide seats located on both sides of the movable seat move in the direction away from the movable seat at the same time, and finally move the same distance, so that the movable seat is positioned in the middle position in the length direction of the axle tube, and the positioning part for placing the height limiting plate on the movable seat is located in the middle position in the length direction of the axle tube, so that the positioning of the height limiting plate and the axle tube is completed quickly, thereby improving the welding efficiency of the axle and making the height limiting plate and the axle tube have higher welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 for Figure 1 Magnified view at A in the middle;

[0021] Figure 3 It is a cross-sectional view of the utility model;

[0022] Figure 4 It is a schematic diagram of the use state of the utility model. DETAILED DESCRIPTION

[0023] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0024] like Figure 1 , 2 , 3, and 4 show a positioning device for axle welding of the utility model, which includes a base 10, two support bases 20, a movable base 40, two slides 50, and a drive cylinder 80. The base 10 is the basic part of the entire positioning device. The two support bases 20 are respectively located at both ends of the base 10, and the two end portions of the shaft tube are supported by the two support bases 20. The movable base 40 is located in the middle of the length direction of the base 10 (the X direction in the figure), and the two slides 50 are respectively located on both sides of the movable base 40, and the movable base 40 and the two slides 50 are slidably installed on the base 10 to have a longitudinal direction of the base 10. The movable seat 40 has a degree of freedom to slide in the direction of degrees. A positioning portion for placing and positioning the height limit plate is provided on the movable seat 40. A pushing piece 51 is fixedly connected to each of the two slides 50. The pushing pieces 51 on the two slides 50 are used to push the two brake base plates on the shaft tube respectively. A gear 41 is installed on the movable seat 40. A rack 52 is fixedly connected to each of the two slides 50. The extending direction of the rack 52 is consistent with the length direction of the base 10. The two racks 52 are respectively meshed with both sides of the gear 41. The cylinder body of the driving cylinder 80 is fixedly connected to the movable seat 40, and the telescopic rod is fixedly connected to one of the slides 50.

[0025] Before the shaft tube is placed on the positioning device, the two slide seats 50 are located near the movable seat 40. Figure 4As shown, the two ends of the shaft tube are supported on two support seats 20 respectively, and then the drive cylinder 80 is started to push one of the slide seats 50 away from the movable seat 40. Due to the meshing of the gear 41 and the two racks 52, when one of the slide seats 50 moves away from the movable seat 40 along the X direction, the other slide seat 50 moves away from the movable seat 40 along the X direction. The two slides 50 move to both sides at the same time, and the pushing piece 51 on one of the slides 50 will inevitably contact one of the brake base plates first. The slide 50 that contacts the brake base plate first is blocked by the brake base plate, and when the gear 41 continues to drive the two racks 52 to move, the movable seat 40 moves toward the other brake base plate, so that the pinion 51 on the other slide 50 presses against the other brake base plate. Since the middle position of the movable seat 40 is at the same distance from the pushing pieces 51 on the two slides 40, the movable seat 40 is finally placed in the middle of the two brake base plates, that is, the movable seat 40 is located in the middle position in the length direction of the shaft tube, and the height limiting plate located on the positioning part of the movable seat 40 is finally positioned in the middle position in the length direction of the shaft tube.

[0026] The utility model drives one of the slide seats to move by driving a cylinder, and utilizes the matching structure of the gear and the rack to make the slide seats located on both sides of the movable seat move in the direction away from the movable seat at the same time, and finally move the same distance, so that the movable seat is positioned in the middle position in the length direction of the axle tube, and the positioning part for placing the height limiting plate on the movable seat is located in the middle position in the length direction of the axle tube, so that the positioning of the height limiting plate and the axle tube is completed quickly, thereby improving the welding efficiency of the axle and making the height limiting plate and the axle tube have higher welding accuracy.

[0027] In a preferred embodiment of the utility model, a positioning seat 60 is provided on the top of the movable seat 40 and can slide relative to the movable seat 40 along the width direction of the base 10 (Y direction in the figure), and the positioning portion is located on the positioning seat 60. By setting the positioning portion to be movable along the width direction of the base 10, the positioning seat can be moved to make the positioning portion approach or move away from the shaft tube, thereby enabling the positioning device to adapt to shaft tubes of different outer diameters. The positioning seat 60 includes a positioning plate 62 and a support plate 64. The positioning plate 62 is slidably mounted on the movable seat 40 through a first linear guide rail extending along the width direction of the base 10. Two cantilevers 63 are arranged at one end of the positioning plate 62 facing the middle of the width direction of the base 10. The support plate 64 is placed below the two cantilevers 63 and is connected to the cantilever 63 by bolts. The support plate 64 is provided with a boss embedded between the two cantilevers 63. The positioning portion is a positioning groove 65 formed by the top surface of the boss and the opposite surfaces of the two cantilevers 63. A baffle 66 located above the positioning groove 63 is also connected between the two cantilevers 63. In order to accurately position the positioning groove 65 in the middle of the length direction of the groove shaft tube, the center line of the positioning groove 65 in the width direction is in the same plane as the rotation axis of the gear 41, and the plane is perpendicular to the length direction of the base 10.

[0028] A mounting surface 11 is formed on the base 10, and a mounting seat 30 is fixedly connected to the mounting surface 11. The mounting seat 30 includes a vertical plate 31 extending along the height direction of the base 10 (Z direction in the figure), and a second linear guide rail 32 extending along the length direction of the base 10 is fixedly installed on the vertical plate 31. The movable seat 40 and the two slides 50 are all slidably installed on the second linear guide rail 32. In this way, after the shaft tube is placed on the positioning device, the movable seat 40 and the two slides 50 are located on the lower side of the shaft tube to prevent interference with the shaft tube, and the movable seat 40 is located on the side so that the height limit plate on the movable seat 40 can dock with the shaft tube from the side of the shaft tube.

[0029] Two nitrogen springs 90 are arranged on the mounting seat 30. The cylinder bodies of the two nitrogen springs 90 are respectively fixed on the mounting seat 30. The piston rods of the two nitrogen springs 90 are respectively pressed against the two sides of the movable seat 40. The elastic stresses of the two nitrogen springs 90 are respectively applied to the two sides of the movable seat 40 to reset the movable seat 40. When the driving cylinder 90 retreats, the two nitrogen springs 90 can reset the movable seat 40, and then the two slide seats 50 can accurately return to the position close to the movable seat 40. When placing the next shaft tube, the interference between the brake base plate on the shaft tube and the push piece 51 can be avoided.

[0030] The movable seat 40 is provided with two guide holes 42 staggered up and down, and a mounting cavity located between the two guide holes 42. The gear 41 is located inside the mounting cavity and is pivotally connected to the movable seat 40. The two racks 52 are respectively connected to the two guide holes 42, so that the two racks 52 are respectively meshed with the upper and lower sides of the gear 41. The guide holes 42 are used to guide the racks 52 to ensure a relatively stable meshing of the racks 52 and the gear 41.

[0031] The above-mentioned pushing member 51 is a pushing plate fixed on the end of the slide 50 away from the movable seat 40. The pushing plate is in contact with the brake base plate and can cooperate with the brake base plate well. The pushing plate can be connected to the slide 50 through a fixed plate.

[0032] A support seat 70 is fixedly connected to the base 10, and a lifting seat 71 that can move up and down is installed on the support seat 70. A limit rod 72 is fixedly connected to the lifting seat 71. The extension direction of the limit rod 72 is consistent with the extension direction of the base 10. When positioning the shaft tube, the limit rod 72 is inserted into the hole of one of the brake base plates to prevent the shaft tube from rotating, so that the height limit plate can be accurately positioned in the circumferential direction of the shaft tube.

[0033] A V-shaped positioning groove 21 is provided on the top of the above-mentioned support seat 20. After the shaft tube is placed, the end of the shaft tube is embedded in the V-shaped positioning groove 21. The shaft tube is positioned using the V-shaped positioning groove 21 to position the shaft tube horizontally (i.e., in the Y direction in the figure).

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A positioning device for axle welding, characterized in that: It includes a base, two support seats respectively located at both ends of the base to support both ends of the shaft tube, a movable seat, two slide seats respectively located at both sides of the movable seat, and a driving cylinder; The movable seat and the two slides are slidably mounted on the base to have the freedom to move in the length direction of the base, and the movable seat is provided with a positioning portion for placing and positioning the height limit plate; the two slides are respectively fixedly connected with a push piece, and the push pieces on the two slides are respectively used to push the two brake bottom plates on the shaft tube; A gear is pivotally connected to the movable seat, and a rack extending along the length direction of the base is fixedly connected to the two sliding seats, and the racks are respectively combined with two sides of the gear; The cylinder body of the driving cylinder is fixed on the movable seat, and the telescopic rod is fixedly connected to one of the sliding seats.

2. The axle welding positioning device according to claim 1, characterized in that: A positioning seat which can slide relative to the movable seat along the width direction of the base is arranged on the top of the movable seat, and the positioning part is arranged on the positioning seat.

3. The axle welding positioning device according to claim 2, characterized in that: The positioning seat includes a positioning plate installed on the top of the movable seat through a first linear guide rail whose extension direction is consistent with the width direction of the base, and a support plate. Two cantilevers are arranged at one end of the positioning plate facing the middle of the width direction of the base. The support plate is placed under the two cantilevers and is connected to the cantilevers by bolts. The support plate is provided with a boss embedded between the two cantilevers. The positioning portion is a positioning groove surrounded by the top surface of the boss and the opposite surfaces of the two cantilevers. A baffle located above the positioning groove is also connected between the two cantilevers. The center line of the positioning groove in the width direction is in the same plane as the rotation axis of the gear, and the plane is perpendicular to the length direction of the base.

4. The axle welding positioning device according to claim 1, characterized in that: A mounting surface is formed on the base, and a mounting seat is fixedly connected to the mounting surface. The mounting seat includes a vertical plate extending along the height direction of the base, and a second linear guide extending along the length direction of the base is fixed on the vertical plate. The movable seat and the two slides are slidably mounted on the second linear guide.

5. The axle welding positioning device according to claim 4, characterized in that: Two nitrogen springs are arranged on the mounting seat, the cylinder bodies of the two nitrogen springs are fixed on the mounting seat, and the piston rods of the two nitrogen springs are respectively pressed against the two sides of the movable seat.

6. The axle welding positioning device according to claim 1, characterized in that: The movable seat is provided with two guide holes staggered up and down and a mounting cavity located between the two guide holes. The two racks are respectively connected in the two guide holes, and the gear is located in the mounting cavity.

7. The axle welding positioning device according to claim 1, characterized in that: The pushing member is a pushing plate fixed on the sliding seat and away from one end of the movable seat.

8. The axle welding positioning device according to claim 1, characterized in that: A support seat is fixedly connected to the base, a lifting seat which can move up and down is installed on the support seat, and a limiting rod which extends along the length direction of the base and is inserted into a hole of one of the brake bottom plates on the shaft tube is fixedly connected to the lifting seat.

9. The axle welding positioning device according to claim 1, characterized in that: A V-shaped positioning groove for placing the end of the shaft tube is formed on the top of the support seat.

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