Special vehicle front axle assembly end circumference welding machine

Abstract

The utility model relates to the field of welding, and discloses a special vehicle front axle assembly end circumference welding machine which comprises a working table, welding tables are symmetrically and detachably connected to the two ends of the working table, a front axle body is placed on the welding tables, main pin holes are symmetrically formed in the two ends of the front axle body, the welding tables are provided with stand columns, and the stand columns penetrate through the main pin holes of the front axle body. A round pipe is placed on the front shaft body, a welding gun is arranged on the welding frame, a positioning part used for fixing the round pipe is arranged at the top end of the stand column, the welding table is detachably connected to the workbench through connection of the connecting part and the positioning part by arranging the sliding cavity, and the welding table can be selectively replaced according to front shafts of different sizes; the round tube is in contact with the ejector rod, and the elastic piece enables the end of the ejector rod to abut against the inner ring of the round tube, so that the round tube is rapidly positioned and coaxially corresponds to the main pin hole. The utility model has the effects that the welding table can be selectively replaced, and the circular tube and the main pin hole can be quickly positioned to coaxially correspond to each other.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a circumferential welding machine for the end of a front axle assembly of a special vehicle. Background Art

[0002] The front axle assembly of a special vehicle is welded from several parts, and annular parts are welded to the upper part of the cylindrical parts at both ends of the assembly, which requires circumferential welding. The utility model can perform circumferential welding on both ends of the assembly at the same time, greatly saving welding time.

[0003] However, when the existing circular welding machine welds the round tube and the front axle, the workers are required to calibrate multiple times and confirm that the round tube and the kingpin hole of the front axle are coaxially placed, which increases the workload; when processing front axles of different heights, the workers use some methods to raise the front axle, which is dangerous and increases the workload and reduces work efficiency. Based on this, the following improvements are proposed. Utility Model Content

[0004] The utility model aims to provide a circumferential welding machine for the end of a front axle assembly of a special vehicle, which has the effects of selectively replacing a welding table and quickly positioning a round tube to correspond coaxially with a kingpin hole.

[0005] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a special vehicle front axle assembly end circumferential welding machine, including a workbench, welding frames are symmetrically arranged at both ends of the workbench, the welding frame is rotatably arranged with a rotating shaft, a telescopic pressure rod is arranged at the bottom end of the rotating shaft, and a pressure ring is fixedly connected to the bottom end of the telescopic pressure rod, and welding tables are symmetrically and detachably connected at both ends of the workbench, a front axle body is placed on the welding table, and main pin holes are symmetrically opened at both ends of the front axle body, the welding table corresponds to the welding frame, and the welding table is provided with columns, and the columns pass through the main pin holes of the front axle body, and round tubes are placed at the two ends of the front axle body at the main pin holes, and the welding frame is provided with a welding gun, and the welding gun is used to weld the round tube and the front axle body, and a positioning part for fixing the round tube is arranged at the top of the column.

[0006] By adopting the above technical solution, a column is set, and a positioning part is set on the top of the column. The positioning part positions the round tube and places it coaxially with the kingpin hole. By detachably connecting the welding table to the workbench, it can be replaced according to front axles of different sizes, thereby achieving the purpose of selectively replacing the welding table and quickly positioning the round tube coaxially corresponding to the kingpin hole.

[0007] The utility model is further configured as follows: the positioning portion includes a push rod and a sliding sleeve, the push rod is symmetrically rotationally connected to the top ends of both sides of the column, the sliding sleeve is slidably connected to the surface of the column, a connecting rod is hinged between the column and the push rod, and an elastic member is arranged between the push rod and the column.

[0008] By adopting the above technical solution, a push rod is set, and under the action of the elastic member, there is a large angle between the push rod and the column, and the distance between the end of the push rod away from the column and the column is large. The round tube is sleeved on the positioning part, and the inner circle of the round tube contacts the end of the push rod. The push rod rotates on the column, and the angle between the push rod and the column is reduced. The push rod drives the sliding sleeve to slide on the column, and the elastic member still has a tendency to reset. The push rod transfers the force evenly to both sides of the round tube, and the round tube is symmetrically positioned, which can achieve the purpose of coaxial positioning of the round tube and the kingpin hole.

[0009] The utility model is further configured as follows: the elastic member is configured as a torsion spring.

[0010] The utility model is further configured as follows: the upright column is vertically provided with a slide groove, the slide sleeve is provided with a slider, and the slider is embedded in the slide groove.

[0011] The utility model is further configured as follows: a first fixed shaft is arranged at the top end of the column, the push rod is hinged to the first fixed shaft, and the elastic member is connected between the first fixed shaft and the push rod.

[0012] The utility model is further configured as follows: the sliding sleeve is provided with a second fixed shaft, the second fixed shaft corresponds to the first fixed shaft, and the connecting rod is hinged between the second fixed shaft and the push rod.

[0013] The utility model is further configured as follows: the welding table is slidably connected to the workbench, and the workbench is provided with a sliding cavity for the welding table to slide.

[0014] The utility model is further configured as follows: guide grooves are provided on both sides of the sliding cavity, guide blocks are provided on both sides of the welding platform, and the guide blocks are embedded in the guide grooves.

[0015] The utility model is further configured as follows: a connecting portion is provided at the end of the welding table, and a locking portion is provided at the workbench, and the connecting portion corresponds to the locking portion.

[0016] The utility model is further configured as follows: the connecting portion includes a connecting shaft and a connecting plate arranged on the connecting shaft, connecting holes are opened at both ends of the connecting plate, and the locking portion includes a bolt arranged on the workbench and a nut connected to the bolt, and the bolt is passed through the connecting hole.

[0017] By adopting the above technical solution, by setting the connecting plate and the nut, the welding table slides in the sliding cavity through the guide block and the guide groove, the bolts penetrate the connecting plate and are threadedly connected with the nut, so that the purpose of detachably connecting the welding table to the workbench can be achieved.

[0018] The beneficial effects of the utility model are as follows: by setting a sliding cavity, the welding table can be detachably connected to the workbench through the connection of the connecting part and the positioning part. According to the front axles with different heights and different kingpin hole diameters, the height of the column and the length of the push rod have different requirements. Therefore, the welding table can be selectively replaced according to the front axles of different sizes through the detachable connection. Compared with the prior art, the processing range is increased and the selection range is wider; by setting the push rod, the elastic part and the sliding sleeve, the round tube is in contact with the push rod, and the elastic part pushes the end of the push rod against the inner ring of the round tube. Since the push rod is symmetrically arranged, it is symmetrically placed after being subjected to force, so that the round tube can be quickly positioned and coaxially correspond to the kingpin hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is an exploded schematic diagram of the overall structure of the utility model, the front axle body and the round tube.

[0021] Figure 2 It is a partial structural schematic diagram of the welding frame of the utility model.

[0022] Figure 3 yes Figure 2 Schematic diagram of the local structure at point A in the middle.

[0023] Figure 4 yes Figure 2 Schematic diagram of the local structure at point B in the middle.

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of a welding table of the utility model.

[0025] In the figure, 1. workbench; 11. welding frame; 111. rotating shaft; 112. telescopic pressure rod; 113. pressure ring; 114. welding gun; 12. sliding cavity; 121. guide groove; 13. locking part; 131. bolt; 132. nut; 2. welding table; 21. column; 211. connecting rod; 212. elastic member; 213. slide groove; 214. first fixed shaft; 22. guide block; 23. connecting part; 231. connecting shaft; 232. connecting plate; 233. connecting hole; 3. positioning part; 31. ejector rod; 32. sliding sleeve; 321. slider; 322. second fixed shaft; 4. front axle body; 41. kingpin hole; 5. round tube. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Embodiment, a special vehicle front axle assembly end circumferential welding machine, such as Figure 1-Figure 5 As shown, it includes a workbench 1, welding frames 11 are symmetrically fixedly arranged at both ends of the workbench 1, the welding frame 11 is rotatably connected with a rotating shaft 111, a telescopic pressure rod 112 is arranged at the bottom end of the rotating shaft 111, and a pressure ring 113 is connected to the bottom end of the telescopic pressure rod 112, and a welding gun 114 is arranged on the welding frame 11, sliding cavities 12 are symmetrically opened at both ends of the workbench 1, a guide groove 121 is opened on the inner side of the sliding cavity 12, a welding table 2 is slidably connected in the sliding cavity 12, guide blocks 22 are arranged on both sides of the welding table 2, and the guide blocks 22 are embedded in the guide groove 121, a connecting shaft 231 is arranged at the end of the welding table 2, a connecting plate 232 is arranged at the connecting shaft 231, and a connecting hole 233 is arranged at the top end of the connecting plate 232, and bolts 131 are arranged on both sides of the sliding cavity 12 of the workbench 1, the bolts 131 penetrate through the connecting holes 233, and nuts 132 are threadedly connected to the ends of the bolts 131.

[0028] Further, such as Figure 2-Figure 4 As shown, the welding table 2 is fixedly provided with a column 21, a first fixed shaft 214 is provided at the top of the column 21, the first fixed shaft 214 is rotatably connected to the push rod 31, an elastic member 212 is connected between the first fixed shaft 214 and the push rod 31, the elastic member 212 is configured as a torsion spring, and sliding grooves 213 are symmetrically and vertically opened on both sides of the column 21, the outer ring of the column 21 is slidably connected to the sliding sleeve 32, the inner ring of the sliding sleeve 32 is provided with a slider 321, the slider 321 is embedded in the sliding groove 213, the slider 321 is provided with a second fixed shaft 322, the second fixed shaft 322 is hinged with a connecting rod 211, and the end of the connecting rod 211 away from the sliding sleeve 32 is hinged to the end of the push rod 31 away from the column 21.

[0029] Its working principle is as follows: a workbench 1 matched with the front axle body 4 to be processed is installed on the workbench 1, the front axle body 4 is placed on the welding table 2, the column 21 passes through the main pin hole 41, and the round tube 5 to be welded is placed on the front axle body 4, the inner circle of the round tube 5 is against the end of the push rod 31, and the circular ring is pressed down with force so that the circular ring contacts the upper surface of the front axle body 4. At this time, the inner circle of the round tube 5 squeezes the push rod 31, and the push rod 31 rotates on the column 21, and the elastic member 212 is deformed by force. The elastic member 212 has a tendency to restore the deformation and transmit the force to the push rod 31, so that the end of the push rod 31 is against the inner circle of the round tube 5, and the round tube 5 is positioned to a position coaxial with the main pin hole 41.

Claims

1. A circumferential welding machine for the end of the front axle assembly of a special vehicle, characterized by: The invention comprises a workbench (1), wherein welding frames (11) are symmetrically arranged at both ends of the workbench (1), the welding frame (11) is rotatably arranged with a rotating shaft (111), a telescopic pressure rod (112) is arranged at the bottom end of the rotating shaft (111), a pressure ring (113) is fixedly connected to the bottom end of the telescopic pressure rod (112), welding tables (2) are symmetrically and detachably connected at both ends of the workbench (1), a front axle body (4) is placed on the welding table (2), and main pin holes (41) are symmetrically opened at both ends of the front axle body (4) ), the welding platform (2) corresponds to the welding frame (11), the welding platform (2) is provided with a column (21), the column (21) passes through the main pin hole (41) of the front axle body (4), round tubes (5) are placed at both ends of the front axle body (4) at the main pin hole (41), the welding frame (11) is provided with a welding gun (114), the welding gun (114) is used to weld the round tube (5) and the front axle body (4), and a positioning portion (3) for fixing the round tube (5) is provided at the top of the column (21).

2. The circumferential welding machine for the end of the front axle assembly of a special vehicle according to claim 1, characterized in that: The positioning portion (3) comprises a push rod (31) and a sliding sleeve (32); the push rod (31) is symmetrically rotatably connected to the top ends of both sides of the column (21); the sliding sleeve (32) is slidably connected to the surface of the column (21); a connecting rod (211) is hinged between the column (21) and the push rod (31); and an elastic member (212) is provided between the push rod (31) and the column (21).

3. The circumferential welding machine for the end of the front axle assembly of a special vehicle according to claim 2, characterized in that: The elastic member (212) is configured as a torsion spring.

4. The circumferential welding machine for the end of the front axle assembly of a special vehicle according to claim 3, characterized in that: The upright column (21) is vertically provided with a sliding groove (213), the sliding sleeve (32) is provided with a sliding block (321), and the sliding block (321) is embedded in the sliding groove (213).

5. The circumferential welding machine for the end of the front axle assembly of a special vehicle according to claim 4, characterized in that: A first fixed shaft (214) is provided at the top end of the column (21), the top rod (31) is hinged to the first fixed shaft (214), and the elastic member (212) is connected between the first fixed shaft (214) and the top rod (31).

6. The circumferential welding machine for the end of the front axle assembly of a special vehicle according to claim 5, characterized in that: The sliding sleeve (32) is provided with a second fixed shaft (322), the second fixed shaft (322) corresponds to the first fixed shaft (214), and the connecting rod (211) is hinged between the second fixed shaft (322) and the push rod (31).

7. The circumferential welding machine for the end of the front axle assembly of a special vehicle according to claim 6, characterized in that: The welding table (2) is slidably connected to the workbench (1), and the workbench (1) is provided with a sliding cavity (12) for the welding table (2) to slide.

8. The circumferential welding machine for the end of the front axle assembly of a special vehicle according to claim 7, characterized in that: Guide grooves (121) are provided on both sides of the sliding cavity (12), and guide blocks (22) are provided on both sides of the welding platform (2), and the guide blocks (22) are embedded in the guide grooves (121).

9. A special vehicle front axle assembly end circumferential welding machine according to claim 8, characterized in that: The end of the welding table (2) is provided with a connecting portion (23), the workbench (1) is provided with a locking portion (13), and the connecting portion (23) corresponds to the locking portion (13).

10. A special vehicle front axle assembly end circumferential welding machine according to claim 9, characterized in that: The connecting portion (23) comprises a connecting shaft (231) and a connecting plate (232) arranged on the connecting shaft (231); connecting holes (233) are provided at both ends of the connecting plate (232); the locking portion (13) comprises a bolt (131) arranged on the workbench (1) and a nut (132) connected to the bolt (131); and the bolt (131) is passed through the connecting hole (233).

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