CN117415436A

CN117415436A - Friction welding machine

Info

Publication number: CN117415436A
Application number: CN202311276199.6A
Authority: CN
Inventors: 姜洪权; 付吉艳
Original assignee: Suzhou Xiyan Machinery Technology Co ltd
Current assignee: Suzhou Xiyan Machinery Technology Co ltd
Priority date: 2023-09-30
Filing date: 2023-09-30
Publication date: 2024-01-19

Abstract

The invention relates to the technical field of friction welding machines, in particular to a friction welding machine which comprises a bearing mechanism, a transmission mechanism arranged on the bearing mechanism and a friction welding mechanism arranged on the transmission mechanism. The clamping plate and the elastic expansion piece which can tightly clamp the surface of the workpiece are movably arranged on the cushion block, the pressure spring which can push the plurality of pull rods is movably arranged in the annular groove outside the beam rod, when the main hydraulic piece drives the traction piece to stretch, the two outer frames connected by the traction piece can drive the two restrained beam rods and the two clamped workpieces to be close to and tightly pressed, the fastener arranged in the middle of the two protective backing plates can cooperate with the inserting rod to control the stretching of the scraper, at the moment, the tool bit of the scraper can throw and cut the metal waste overflowing from the gap between the two pressed workpieces, so that the defect that irregular holes are generated in the welding seam due to the layer-by-layer cooling of overflowing metal at the welding seam part of the workpiece is avoided.

Description

Friction welding machine

Technical Field

The invention relates to the technical field of friction welding machines, in particular to a friction welding machine.

Background

The friction welding machine is a method that heat generated by mutual friction of end surfaces of workpieces is used for enabling the end surfaces to reach a plastic state, then upsetting is performed for completing welding, and because cutting scraps are always firmly adhered to a cutter head when the workpieces are turned, partial welding can be generated when lubrication between a shaft and a bearing bush is poor, friction welding is invented from the phenomena, and the friction welding can be divided into continuous driving friction welding and inertia friction welding.

At present, when friction welding machine compresses tightly the section of two work pieces and rubs the operation, along with two sections of work piece laminating continuously intensifies, two terminal surfaces after compressing up can produce outwards overflow metal waste under the effect of extrusion force at welded in-process, in case the metal waste cooling solidification back that overflows just needs the manual work to carry out throwing to cut the processing of polishing with the metal waste on the work piece after welding, but the metal waste that overflows in the work piece pressurized friction welding process can cause two work piece gap positions to appear hollow problem, and the cooling is thrown and is cut the shrinkage pool of polishing the back, the welding seam position of work piece just can appear the pothole.

Aiming at the use of a friction welding machine, how to avoid the problem that a seam formed by abutting two pressed workpieces cannot cause a pit of a welding line under the action of the interference of overflow metal waste is solved, and simultaneously, the visual observation of the welding state of the end faces of the two workpieces by an operator is improved, namely the technical difficulty to be solved by the invention.

Disclosure of Invention

The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

The technical scheme adopted by the invention is as follows:

the utility model provides a friction welder, includes bearing mechanism, installs the drive mechanism on bearing mechanism and installs the friction welding mechanism on drive mechanism, bearing mechanism includes the base, install two vice stand of base top one side, install the head mast of base top opposite side, connect the head mast in the head mast, utilize the bolt to install respectively at two protection backing plates of two vice stand tops, swing joint on the head mast and run through to the inboard traction element of two protection backing plates, install at the fastener of two protection backing plates middle part and utilize the inserted bar to fix the scraper in the fastener, drive mechanism includes and runs through to two outer framves on two protection backing plates and connect on the traction element, install riser on one outer frame, install the drive assembly on another outer frame and connect respectively two beam position springs on two outer frames, movable mounting two supplementary hydraulic rods on two outer frames, movable mounting first, movable mounting second shaft rod in the riser and the expansion link, the expansion link is installed in the expansion link, the expansion link is located at two ends of two adjacent shafts and two tie rods, the expansion link ends of expansion link, the expansion link is including the expansion link, the expansion link is installed in the expansion link, the expansion link is equipped with the expansion link.

The present invention may be further configured in a preferred example to: a transverse hole is formed in the transverse plate at the top of the main upright post, two bolts fixed to the main hydraulic part are installed at the top of the transverse plate, and a U-shaped chuck is installed at the outer end of the hydraulic sub-rod in the main hydraulic part.

Through adopting above-mentioned technical scheme, utilize the bolt to install main hydraulic part in the diaphragm at main stand top, the main hydraulic part that is fixed this moment can carry out stable traction to the traction element after the combination, and the both ends of traction element can extend simultaneously and shrink along the inner chamber of two protection backing plates respectively.

The present invention may be further configured in a preferred example to: the protection backing plate is internally provided with a flat slotted hole for guiding the outer frame to freely extend.

Through adopting above-mentioned technical scheme, utilize and run through two end poles in two outer framves respectively to two protection backing plates inside flat slotted hole in, by traction piece both ends swing joint's two end poles alright cooperate the main hydraulic part that freely stretches to carry out reciprocating extension this moment, and two beam rods that are restrained in two outer framves alright drive simultaneously and carry out the syntropy laminating by two work pieces of centre gripping and compress tightly.

The present invention may be further configured in a preferred example to: the outer end of the fastener is provided with a rectangular end pipe, the rectangular sliding block at the inner end of the scraper is adapted to penetrate into the rectangular end pipe, and a plurality of equidistant vertical holes are formed in the top of the scraper.

Through adopting above-mentioned technical scheme, utilize the length that the inserted bar control scraper stretched in the rectangle end pipe, when two adjacent work piece footpath length differences, the tool bit of the outer end of the adjustable inserted bar control scraper carries out centre gripping circular cutting processing to the gap position of two work pieces after compressing tightly.

The present invention may be further configured in a preferred example to: the outer frame consists of an end rod, a transverse pipe and a partition plate, and a clamping head is arranged at the outer end of the end rod.

Through adopting above-mentioned technical scheme, utilize beam position spring to fix a position the constraint in the violently managing in the outer frame with the beam rod that is compressed tightly by beam position spring can carry out normal high-speed rotation again when driving the work piece sideslip this moment along with two outer frames are close to each other and outwards keep away from.

The present invention may be further configured in a preferred example to: the driving assembly comprises a vertical plate, a chassis, a motor and a short crawler belt, and the other end of the short crawler belt is driven by the first shaft rod.

Through adopting above-mentioned technical scheme, utilize to install the motor at quick-witted incasement, cooperate short track to carry out joint transmission with motor shaft pole and first axostylus axostyle, when the motor starts and moves, by short track driven first axostylus axostyle just can cooperate the helping hand sleeve pipe of concatenation and second axostylus axostyle drive two extension tracks and rotate, and by driven two beam bars alright drive two work pieces laminating of being held tightly in external fixed plate's both sides.

The present invention may be further configured in a preferred example to: the utility model discloses a flexible main pipe, including cushion, clamp, elastic expansion piece, spring, a plurality of cushion are installed to the inboard of cushion, and the opposite side of splint installs anchor clamps, elastic expansion piece comprises flexible main pipe, flexible son pole and spring, and spring coupling is in the inner chamber of flexible main pipe, and the terminal post of flexible son pole bottom runs through to in the flexible main pipe.

Through adopting above-mentioned technical scheme, utilize flexible female pipe and flexible son pole swing joint respectively on cushion and splint in the elastic expansion piece, the elastic support of cooperation spring to flexible son pole, a plurality of cushion and splint by a plurality of bolt fastening on beam inner end this moment can carry out the suitability centre gripping fixedly to the surface of work piece, so as to ensure that the device can press from both sides the work piece of different footpaths length, the swing joint of cooperation flexible female pipe to the cushion, and combine flexible son pole to the swing joint of splint, elastic expansion piece alright provide the elastic potential energy that resets for it when splint pressurized is pressed with the work piece clamp, after splint external force withdraw, the elastic expansion piece alright make splint resume initial condition fast, in order to make things convenient for follow-up to the centre gripping operation of work piece.

By adopting the technical scheme, the beneficial effects obtained by the invention are as follows:

1. according to the invention, the end of the beam rod far away from one end of the buckle is provided with the cushion blocks which are circumferentially distributed by utilizing the bolts, the cushion blocks are movably provided with the clamping plates and the elastic telescopic members which can clamp the surfaces of the workpieces, the ring grooves outside the beam rod are movably provided with the pressure springs which can push the pull rods, when the main hydraulic member drives the traction member to stretch, the two outer frames connected by the traction member can drive the two restrained beam rods and the two clamped workpieces to closely compress, the buckle arranged in the middle of the two protective cushion plates can cooperate with the inserting rod to control the stretching of the scraper, and at the moment, the tool bit of the scraper can throw and cut the metal waste overflowed from the gap between the two pressed workpieces, so that the defect that irregular holes are generated in the welding seam due to the layer-by-layer cooling of overflowed metal is avoided.

2. According to the invention, the vertical plates and the driving assemblies in the vertical state are arranged at the bottoms of the two outer frames, the motors and the short tracks are arranged in the driving assemblies, the transverse and symmetrical first shaft rods and second shaft rods are respectively and movably arranged at the bottom ends of the vertical plates and the driving assemblies, at the moment, the first shaft rods and the second shaft rods which are movably clamped by the auxiliary sleeve can be matched with the extension of the other two outer frames to be freely opened and closed, and the two lengthened tracks driven by the first shaft rods and the second shaft rods can simultaneously drive the two clamped workpieces to be subjected to friction welding treatment at the same rotation speed along the plate in the fixed state.

Drawings

FIG. 1 is a schematic illustration of the present invention in use;

FIG. 2 is a schematic bottom view of the present invention;

FIG. 3 is a schematic view of a load bearing mechanism of the present invention;

FIG. 4 is a schematic diagram of a transmission mechanism of the present invention;

FIG. 5 is a schematic view of the internal dispersion of FIG. 4 according to the present invention;

FIG. 6 is a schematic view of a friction welding mechanism of the present invention;

FIG. 7 is a dispersion schematic of the friction welding mechanism of the present invention;

FIG. 8 is a dispersion schematic of the retaining ring and tie rod of the present invention;

fig. 9 is a dispersion schematic of the spacer of the present invention.

Reference numerals:

100. a bearing mechanism; 110. a base; 120. a main column; 130. an auxiliary upright post; 140. a main hydraulic part; 150. a protective backing plate; 160. a traction member; 170. a fastener; 180. a scraper;

200. a transmission mechanism; 210. an outer frame; 220. a riser; 230. a drive assembly; 240. an auxiliary hydraulic rod; 250. a beam position spring; 260. a first shaft; 270. a second shaft; 280. a boosting sleeve; 290. lengthening the crawler belt;

300. a friction welding mechanism; 310. a beam; 320. a pressure spring; 330. positioning ring buckles; 340. a pull rod; 350. a cushion block; 360. a clamping plate; 370. an elastic expansion piece; 380. and (5) a buckle.

Detailed Description

The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present invention and features in the embodiments may be combined with each other.

It is to be understood that this description is merely exemplary in nature and is not intended to limit the scope of the present invention.

A friction welder provided in accordance with some embodiments of the present invention is described below with reference to the accompanying drawings.

Embodiment one:

referring to fig. 1 to 9, the friction welding machine provided by the present invention includes a load bearing mechanism 100, a transmission mechanism 200 mounted on the load bearing mechanism 100, and a friction welding mechanism 300 mounted on the transmission mechanism 200.

The load bearing mechanism 100 includes a base 110, a main column 120, a secondary column 130, a main hydraulic 140, a protective pad 150, a traction member 160, a fastener 170, and a scraper 180, and the transmission mechanism 200 includes an outer frame 210, a riser 220, a drive assembly 230, an auxiliary hydraulic rod 240, a binding spring 250, a first shaft 260, a second shaft 270, a power-assisted sleeve 280, and an elongated track 290, and the friction welding mechanism 300 includes a beam 310, a compression spring 320, a positioning collar 330, a pull rod 340, a pad 350, a clamp plate 360, an elastic telescoping member 370, and a buckle 380.

Specifically, two auxiliary columns 130 are installed on one side of the top of the base 110, the main column 120 is installed on the other side of the top of the base 110, the main hydraulic component 140 is connected to the main column 120, two protection base plates 150 are installed on the tops of the two auxiliary columns 130 respectively through bolts, the traction component 160 is movably connected to the main hydraulic component 140 and penetrates to the inner sides of the two protection base plates 150, the fastener 170 is installed at the middle part of the two protection base plates 150, the scraper 180 is fixed to the fastener 170 through a plug rod, the two outer frames 210 penetrate to the two protection base plates 150 and are connected to the traction component 160, the vertical plate 220 is installed on one outer frame 210, the driving component 230 is installed on the other outer frame 210, the two beam positioning springs 250 are connected to the two outer frames 210 respectively, the two auxiliary hydraulic rods 240 are movably installed on the two outer frames 210 through bolts, the first shaft rod 260 is movably installed in the driving component 230, the second shaft 270 is movably installed in the vertical plate 220, the aid sleeve 280 is movably installed at the adjacent end of the first shaft 260 and the second shaft 270, the two outer ends of the two guide rods are connected to the two ring beams 310 through bolts, the two end blocks 310 are movably connected to the two ring beams 310 and the two ring beams 310 are movably connected to the other end blocks 350, the two ring beams 310 are movably installed at the other ends of the two ring beams 310 and the end blocks 360 are movably connected to the other end blocks 310 through bolts and the two ring beams 350 are movably arranged at the end blocks 360.

The vertical plates 220 and the driving components 230 are arranged at the bottoms of the two outer frames 210, the motor and the short crawler belt are arranged in the driving components 230, the transverse and symmetrical first shaft rod 260 and the symmetrical second shaft rod 270 are respectively and movably arranged at the bottom ends of the vertical plates 220 and the driving components 230, at the moment, the first shaft rod 260 and the second shaft rod 270 which are movably clamped by the auxiliary sleeve 280 can be matched with the expansion of the other two outer frames 210 to be freely opened and closed, the pressure springs 320 which can push the plurality of pull rods 340 are movably arranged in the annular grooves at the outer parts of the beam rods 310, when the main hydraulic component 140 drives the traction components 160 to expand, the two outer frames 210 connected by the traction components 160 can drive the two constrained beam rods 310 and the two workpieces clamped by the traction components to be close to be tightly pressed, and the fasteners 170 arranged at the middle parts of the two protective backing plates 150 can be matched with the inserted rods to control the expansion of the scraper 180, at the moment, the tool bit of the scraper 180 can cut the metal waste overflowed from the gap of the two workpieces after being tightly pressed, and the defect that irregular weld joints are formed due to the fact that the welding joints are formed is formed by cooling the overflow metal welding layers is avoided.

Embodiment two:

referring to fig. 3 and 4, on the basis of the first embodiment, a transverse hole is formed in a transverse plate at the top of the main upright 120, two bolts fixed to the main hydraulic member 140 are mounted at the top of the transverse plate, a U-shaped chuck is mounted at the outer end of a hydraulic sub-rod in the main hydraulic member 140, and a flat slot hole for guiding the outer frame 210 to freely extend is formed in the protective pad 150.

The main hydraulic component 140 is mounted in the transverse plate at the top of the main upright 120 by using bolts, the fixed main hydraulic component 140 can stably pull the combined traction component 160, two ends of the traction component 160 can simultaneously extend and retract along the inner cavities of the two protection backing plates 150 respectively, two end rods in the two outer frames 210 respectively penetrate into flat slotted holes in the two protection backing plates 150 simultaneously, the two end rods movably connected with two ends of the traction component 160 can cooperate with the freely-extending main hydraulic component 140 to carry out reciprocating extension, and the two beam rods 310 restrained in the two outer frames 210 can simultaneously drive the two clamped workpieces to carry out equidirectional lamination compaction.

Embodiment III:

referring to fig. 3-5, on the basis of the first embodiment, a rectangular end pipe is installed on a side of the fastener 170 away from the protective pad 150, a rectangular sliding block is installed on a side of the scraper 180 close to the fastener 170, the rectangular sliding block at the inner end of the scraper 180 is adapted to penetrate into the rectangular end pipe, an inserting rod located right above the fastener 170 penetrates into the rectangular end pipe and is inserted into the rectangular sliding block, a plurality of equally spaced vertical holes are formed at the top of the scraper 180, a vertical plate, a case, a motor and a short crawler form when the driving assembly 230 is driven, and the other end of the short crawler is driven by the first shaft 260.

When the motor is started and operated, the first shaft lever 260 driven by the short crawler drives the two lengthened crawlers 290 to rotate by matching with the spliced auxiliary sleeve 280 and the second shaft lever 270, the two driven beam rods 310 can drive the two clamped workpieces to be attached and pressed on two sides of the external fixed plate, the inserted rod control scraper 180 is combined with the length of the inserted rod control scraper 180 stretching in the rectangular end pipe, and when the diameters of the two adjacent workpieces are different, an operator can adjust the cutter head at the outer end of the inserted rod control scraper 180 to clamp and cut the gap part of the two pressed workpieces.

Embodiment four:

referring to fig. 6 to 9, on the basis of the first embodiment, the outer frame 210 is composed of an end rod, a transverse tube and a partition plate, the outer end of the end rod is provided with a clamping head, one side of the cushion block 350 is provided with a transverse slot, the inner side of the clamping plate 360 is provided with a plurality of rubber pads, the other side of the clamping plate 360 is provided with a clamp, the elastic telescopic piece 370 is composed of a telescopic main tube, a telescopic sub-rod and a spring, the spring is connected in the inner cavity of the telescopic main tube, and the end post at the bottom of the telescopic sub-rod penetrates into the telescopic main tube.

The beam rod 310 is positioned and restrained in a transverse tube in the outer frame 210 by the beam position springs 250, and along with the mutual approaching and outward separating of the two outer frames 210, the beam rod 310 pressed by the beam position springs 250 drives a workpiece to transversely move, meanwhile, the telescopic main tube and the telescopic sub-rod in the elastic telescopic piece 370 are respectively and movably connected to the cushion block 350 and the clamping plate 360, the elastic support of the telescopic sub-rod is matched with the spring, and the plurality of cushion blocks 350 and the clamping plates 360 fixed on the inner end heads of the beam rod 310 by a plurality of bolts can be used for adaptively clamping and fixing the outer surfaces of the workpiece, so that the device can clamp the workpieces with different diameters;

the flexible mother pipe is matched with the flexible connection of the cushion block 350, and the flexible connection of the flexible son rod to the clamping plate 360 is combined, when the clamping plate 360 is pressed to clamp a workpiece, the elastic expansion piece 370 can provide reset elastic potential energy for the workpiece, and when the clamping plate 360 is evacuated by external force, the elastic expansion piece 370 can promote the clamping plate 360 to quickly restore to an initial state, so that the workpiece can be conveniently clamped in the follow-up process.

The working principle and the using flow of the invention are as follows: the inner end of the clamping plate 360 is movably arranged in the transverse groove at one side of the cushion block 350 in advance, then the cushion block 350 is connected with the clamping plate 360 by utilizing the combined elastic telescopic piece 370, then the clamp outside the clamping plate 360 is connected with the positioning ring buckle 330 by utilizing the plurality of pull rods 340, at the moment, the positioning ring buckle 330 and the cushion block 350 can be arranged on the beam rod 310 through a plurality of groups of bolts, at the moment, one end of the pull rod 340 is movably arranged in the clamp outside the clamping plate 360, and the other end of the pull rod 340 is movably arranged in the groove outside the positioning ring buckle 330, when the positioning ring buckle 330 is stressed to extend outwards along the beam rod 310, at the moment, the plurality of circumferentially distributed clamping plates 360 can be applied with thrust by the plurality of pull rods 340, at the moment, the plurality of clamping plates 360 can clamp workpieces, at the moment, when the positioning ring buckle 330 is restored to the initial state, the plurality of clamping plates 360 can lose the external force effect, at this time, the elastic potential energy generated in the elastic expansion piece 370 can promote the clamp plate 360 to restore the initial state, the buckle 380 is movably mounted on one end of the beam rod 310 far away from the cushion block 350, then the beam rod 310 is movably mounted in the transverse tube at one side of the outer frame 210, at this time, the beam position spring 250 connected to the outer portion of the outer frame 210 can clamp the gasket of the beam rod 310 near one end of the buckle 380 in a pressurizing manner, then the riser 220 and the driving component 230 are respectively mounted on the two outer frames 210, the outer portions of the two outer frames 210 are respectively connected with two auxiliary hydraulic rods 240 which can be connected to the two buckles 380, the hydraulic female rod in the auxiliary hydraulic rods 240 is movably mounted on the outer frames 210, the hydraulic sub rods are movably mounted in the buckles 380, after the auxiliary hydraulic rods 240 run and drive the buckles 380 to perform local fine adjustment, at this time, the calibration of the beam rod 310 and the two sides of the external plates can be adjusted by the transverse buckles 380, the bottom ends of the vertical plate 220 and the driving assembly 230 are respectively and movably provided with a second shaft rod 270 and a first shaft rod 260 which are symmetrically distributed, two adjacent ends of the second shaft rod 270 and the first shaft rod 260 are movably assembled by a boosting sleeve 280, at the moment, a short crawler belt which is in transmission connection with the motor shaft rod in the driving assembly 230 is transmitted to the first shaft rod 260, simultaneously, two lengthened crawler belts 290 respectively transmit the outer ends of the first shaft rod 260 and the second shaft rod 270 with the outer ends of two beam rods 310, then the end rods at the other ends of two outer frames 210 respectively penetrate into the inner cavities of two protection backing plates 150, the two protection backing plates 150 are fixed on the end plates at the top of two auxiliary upright posts 130 by a plurality of bolts, a main upright post 120 arranged at the top of the base 110 is used for assembling the main hydraulic part 140, the outer ends of the hydraulic sub-rods in the main hydraulic part 140 are movably arranged on the end heads at the middle part of the combined traction part 160, meanwhile, the scraper 180 movably arranged in the rectangular sleeve at the outer side of the fastener 170 is matched with the fixation of the inserted rod, so that pressurizing and bonding are carried out on the clamped joint parts of two workpieces, when the motor in the driving assembly 230 is started and operated, the outer end shaft rod of the motor drives the short caterpillar band to rotate so as to drive the first shaft rod 260, the auxiliary sleeve 280 and the second shaft rod 270 to rotate, at the moment, the two lengthened caterpillar bands 290 simultaneously driven by the first shaft rod 260 and the second shaft rod 270 can drive the adjacent two beam rods 310 to rotate, along with the operation of the main hydraulic part 140, the hydraulic sub-rod in the main hydraulic part 140 drives the traction part 160 to extend outwards, the two outer frames 210 connected by the traction part 160 drive the adjacent two beam rods 310 to drive the clamped two workpieces to be close and bonded, along with the rotation of the two workpieces along the two sides of the plate, and two beam rods 310 are located at two sides of the clamped columnar plate and are symmetrically distributed, and along with synchronous rotation of the two beam rods 310 and after the clamped columnar plate is tightly attached, two groups of clamping plates 360 respectively installed on the two beam rods 310 can drive workpieces to be subjected to friction welding along two sides of the columnar plate, and the scraper 180 knife edges attached to the outside of the attaching gaps of the two workpieces can carry out circular cutting treatment on hot melt overflowed metal scraps.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. A friction welding machine, which is characterized by comprising a bearing mechanism (100), a transmission mechanism (200) arranged on the bearing mechanism (100) and a friction welding mechanism (300) arranged on the transmission mechanism (200);

the bearing mechanism (100) comprises a main hydraulic part (140), a traction part (160) which is movably connected to the main hydraulic part (140) and penetrates through the inner sides of the two protection base plates (150), a fastener (170) arranged in the middle of the two protection base plates (150) and a scraper (180) fixed in the fastener (170) by using an inserted link;

the transmission mechanism (200) comprises two outer frames (210) penetrating into the two protection backing plates (150) and connected to the traction piece (160), a vertical plate (220) arranged on one outer frame (210), a driving assembly (230) arranged on the other outer frame (210) and two beam springs (250) respectively connected to the two outer frames (210);

the friction welding mechanism (300) comprises two beam rods (310) movably mounted in the two outer frames (210), a pressure spring (320) connected to the other ends of the beam rods (310), a plurality of cushion blocks (350) mounted on the inner ends of the beam rods (310) through bolts, clamping plates (360) movably mounted on the cushion blocks (350), positioning ring buckles (330) movably mounted on the beam rods (310) and a plurality of pull rods (340) mounted in the positioning ring buckles (330) through bolts.

2. The friction welder as defined in claim 1, wherein the load bearing mechanism (100) includes a base (110), two auxiliary columns (130) mounted on one side of the top of the base (110), a main column (120) mounted on the other side of the top of the base (110), and two protective pads (150) are mounted on top of the two auxiliary columns (130) respectively by bolts.

3. The friction welder of claim 1, wherein the transmission mechanism (200) includes two auxiliary hydraulic rods (240) movably mounted on the two outer frames (210), a first shaft (260) movably mounted in the drive assembly (230), a second shaft (270) movably mounted in the riser (220), a booster sleeve (280) movably mounted on adjacent ends of the first shaft (260) and the second shaft (270), and two elongated tracks (290) driven on the first shaft (260) and the second shaft (270).

4. A friction welding machine according to claim 1, wherein the friction welding mechanism (300) comprises a clasp (380) movably mounted to one end of the beam (310) and a resilient expansion member (370) connected between the spacer (350) and the clamping plate (360).

5. The friction welding machine according to claim 1, wherein a transverse hole is formed in a transverse plate at the top of the main upright post (120), two bolts fixed to the main hydraulic part (140) are mounted at the top of the transverse plate, and a U-shaped chuck is mounted at the outer end of a hydraulic sub-rod in the main hydraulic part (140).

6. The friction welding machine according to claim 1, wherein the protective backing plate (150) is internally provided with flat slots for guiding the free extension of the outer frame (210).

7. The friction welding machine according to claim 1, wherein a rectangular end pipe is mounted at the outer end of the fastener (170), a rectangular sliding block at the inner end of the scraper (180) is adapted to penetrate into the rectangular end pipe, and a plurality of vertical holes distributed at equal intervals are formed in the top of the scraper (180).

8. A friction welder as defined in claim 1 wherein said outer frame (210) is comprised of an end bar, a cross tube and a spacer, and a collet is mounted to the outer end of the end bar;

the driving assembly (230) comprises a vertical plate, a machine box, a motor and a short crawler belt, and the other end of the short crawler belt is driven to the first shaft lever (260).

9. The friction welding machine according to claim 1, wherein a lateral groove is formed in one side of the pad block (350), a plurality of rubber pads are mounted on the inner side of the clamping plate (360), and a clamp is mounted on the other side of the clamping plate (360).

10. A friction welding machine according to claim 1, wherein the elastic telescopic member (370) comprises a telescopic main pipe, a telescopic sub-rod and a spring, the spring is connected in the inner cavity of the telescopic main pipe, and the end post at the bottom of the telescopic sub-rod penetrates into the telescopic main pipe.