CN211516532U

CN211516532U - Overlap welding tool suitable for excavator movable arm

Info

Publication number: CN211516532U
Application number: CN201922338155.7U
Authority: CN
Inventors: 赖永刚; 孟庆亮
Original assignee: Anhui Chang Yong De Machinery Co ltd
Current assignee: Anhui Chang Yong De Machinery Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-18
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a be suitable for overlap welding frock of excavator swing arm, including the back centring means who is used for advancing the location to the swing arm front fork, a front fork positioner for making two front fork curb plates of swing arm front fork keep paralleling, a tail shaft hole positioner for providing the support to the swing arm front fork, a preceding centring means for advancing the location to the front axle subassembly, a front shaft hole positioner for providing the support to the front axle subassembly, a plurality of fastener that are used for advancing the otic placode positioner that fixes a position and are used for excavator swing arm's each plate body to apply the packing force to the otic placode. The utility model discloses be suitable for overlap welding frock of excavator swing arm, can pinpoint and fix each part that constitutes the excavator swing arm, then weld the equipment, production efficiency is high, and the commonality is good for product quality is stable, and the rejection rate is low, and the technical ability requirement itself to welding workman reduces a lot, is suitable for mass production.

Description

Overlap welding tool suitable for excavator movable arm

Technical Field

The utility model belongs to the technical field of the engineering machine tool processing equipment, specifically speaking, the utility model relates to a be suitable for overlap welding frock of excavator swing arm.

Background

The existing excavator movable arm is only supported by some simple processes to fix relevant parts forming the movable arm and welded in the welding process, the welding time is long, the machining precision is poor, the production efficiency is low, the product quality is unstable, the requirement on the welding technical level of workers is high, the rejection rate is high, and the welding assembly is not suitable for mass production.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a be suitable for overlap welding frock of excavator swing arm, the purpose improves the production efficiency of excavator swing arm.

In order to realize the purpose, the utility model discloses the technical scheme who takes does: the overlap welding tool suitable for the excavator boom comprises a rear centering device used for positioning a front fork of the boom, a front fork positioning device which is movably arranged and used for keeping two front fork side plates of the front fork of the boom parallel, a tail shaft hole positioning device used for supporting the front fork of the boom and used for positioning the front fork of the boom, a front centering device used for positioning a front shaft assembly and used for applying downward pressing force to the front shaft assembly, a front shaft hole positioning device used for supporting the front shaft assembly and used for positioning the front shaft assembly, an ear plate positioning device used for positioning an ear plate, a first fastening device used for applying pressing force to a front top plate and a first side plate, a second fastening device used for applying pressing force to a second side plate, a third fastening device used for applying pressing force to a third side plate, and a fourth fastening device used for applying pressing force to a rear top plate and the third side plate, The front top plate and the rear top plate are positioned between the movable arm front fork and the front shaft assembly, the front top plate and the rear top plate are sequentially arranged along the horizontal direction, the front top plate is positioned between the first side plate and the second side plate, and the rear top plate is positioned between the second side plate and the third side plate.

The rear centering device comprises a rear bracket, a rear cantilever, a rear positioning shaft and a rear lifting actuator, wherein the rear positioning shaft is arranged on the rear cantilever and is used for being inserted into a shaft hole of a front fork side plate of the movable arm front fork, and the rear lifting actuator is arranged on the rear bracket and is used for controlling the rear cantilever to lift.

The front fork positioning device comprises a front fork positioning seat, a first sliding seat and a second sliding seat which are movably arranged on the front fork positioning seat, and an adjusting mechanism which is arranged on the front fork positioning seat and is used for controlling the first sliding seat and the second sliding seat to lift, wherein the first sliding seat is positioned above the second sliding seat, the first sliding seat is used for supporting one front fork side plate which is positioned above the two front fork side plates of the movable arm front fork, and the second sliding seat is used for applying pressing force to one front fork side plate which is positioned below the two front fork side plates of the movable arm front fork.

The adjusting mechanism comprises an adjusting lead screw which is rotatably arranged on the front fork positioning seat and is in threaded connection with the first sliding seat and the second sliding seat, the adjusting lead screw is vertically arranged, and a vertical guide rail which guides the first sliding seat and the second sliding seat is arranged on the front fork positioning seat.

The front centering device comprises a front bracket, a front cantilever, a front positioning shaft arranged on the front cantilever and used for being inserted into a shaft hole of the front shaft assembly, and a front lifting actuator arranged on the front bracket and used for controlling the front cantilever to lift.

The ear plate positioning device comprises an ear plate positioning seat, an ear plate positioning shaft vertically arranged on the ear plate positioning seat, a supporting plate arranged on the ear plate positioning seat and used for supporting the ear plate, and a supporting block sleeved on the ear plate positioning seat and positioned between the two ear plates.

The first fastening device comprises a first fastening support, a first ejector rod, a first upper cantilever and a first upper pressing rod, wherein the first ejector rod is in threaded connection with the first fastening support and is used for being in contact with the first side plate, the first upper cantilever is arranged on the first fastening support, the first upper pressing rod is vertically arranged on the first upper cantilever and is used for applying pressing force to the front top plate, and the first upper pressing rod is in threaded connection with the first upper cantilever.

The second fastening device comprises a second fastening support and a second ejector rod which is in threaded connection with the second fastening support and is used for being in contact with the second side plate, the third fastening device comprises a third fastening support and a third ejector rod which is in threaded connection with the third fastening support and is used for being in contact with the third side plate, and the sixth fastening device comprises a sixth fastening support and a sixth ejector rod which is in threaded connection with the sixth fastening support and is used for being in contact with the second side plate.

The fourth fastening device comprises a fourth fastening support, a fourth ejector rod, a second upper cantilever and a second upper pressure rod, wherein the fourth ejector rod is in threaded connection with the fourth fastening support and is used for being in contact with the third side plate, the second upper cantilever is arranged on the fourth fastening support, the second upper pressure rod is vertically arranged on the second upper cantilever and is used for applying pressing force to the rear top plate, and the second upper pressure rod is in threaded connection with the second upper cantilever.

The fifth fastening device comprises a fifth fastening support, a fifth ejector rod, a third upper cantilever and a third upper pressure rod, wherein the fifth ejector rod is in threaded connection with the fifth fastening support and is used for being in contact with the first side plate, the third upper cantilever is arranged on the fifth fastening support, the third upper pressure rod is vertically arranged on the third upper cantilever and is used for applying pressing force to the rear top plate, and the third upper pressure rod is in threaded connection with the third upper cantilever.

The utility model discloses be suitable for overlap welding frock of excavator swing arm, can pinpoint and fix each part that constitutes the excavator swing arm, then weld the equipment, production efficiency is high, and the commonality is good for product quality is stable, and the rejection rate is low, and the technical ability requirement itself to welding workman reduces a lot, is suitable for mass production.

Drawings

The description includes the following figures, the contents shown are respectively:

FIG. 1 is a schematic structural view of a lap welding tool suitable for a movable arm of an excavator according to the present invention;

FIG. 2 is a schematic view of the use state of the lap welding tool suitable for the movable arm of the excavator;

FIG. 3 is a schematic view of another angle of the lap welding tool for the movable arm of the excavator according to the present invention;

FIG. 4 is a schematic diagram of the construction of the excavator boom;

FIG. 5 is a schematic view of the structure of the rear centering device;

FIG. 6 is a schematic structural view of the front fork positioning device;

FIG. 7 is a schematic view of the structure of the tail shaft hole positioning device;

FIG. 8 is a schematic view of the front centering device;

FIG. 9 is a schematic view of the front axle hole positioning device;

FIG. 10 is a schematic view of the structure of the ear plate positioning device;

FIG. 11 is a schematic view of the first fastening device;

FIG. 12 is a schematic view of a second fastening device;

FIG. 13 is a schematic structural view of a third fastening device;

FIG. 14 is a schematic structural view of a fourth fastening device;

FIG. 15 is a schematic structural view of a fifth fastening device;

FIG. 16 is a schematic structural view of a sixth fastening device;

FIG. 17 is a schematic structural view of a seventh fastening device;

labeled as: 1. a base; 2. a rear centering device; 201. a rear bracket; 202. a rear cantilever; 203. a rear positioning shaft; 204. a rear lifting actuator; 3. a front fork positioning device; 301. a front fork positioning seat; 302. a first sliding seat; 303. a second sliding seat; 304. adjusting the lead screw; 305. a vertical guide rail; 306. a horizontal guide rail; 4. a tail shaft hole positioning device; 401. a tail shaft positioning seat; 402. a tail positioning shaft; 5. a front centering device; 501. a front bracket; 502. a front cantilever; 503. a front positioning shaft; 504. a front elevation actuator; 6. a front axle hole positioning device; 601. a front shaft positioning seat; 602. a front positioning shaft; 7. an ear plate positioning device; 701. an ear plate positioning seat; 702. an ear plate positioning shaft; 703. a support plate; 704. a support block; 8. a first fastening device; 801. A first fastening bracket; 802. a first ejector rod; 803. a first upper cantilever; 804. a first upper press rod; 9. a second fastening device; 901. a second fastening bracket; 902. a second ejector rod; 10. a third fastening means; 1001. a third fastening bracket; 1002. a third ejector rod; 11. a fourth fastening means; 1101. a fourth fastening bracket; 1102. a fourth ejector rod; 1103. a second upper cantilever; 1104. a second upper press rod; 12. a fifth fastening means; 1201. a fifth fastening bracket; 1202. a fifth ejector rod; 1203. a third upper cantilever; 1204. a third upper press rod; 13. a sixth fastening means; 1301. a sixth fastening bracket; 1302. a sixth ejector rod; 14. a seventh fastening means; 1401. A seventh fastening bracket; 1402. a seventh ejector rod; 15. a lower base plate; 16. bending the plate; 17. a front fork side plate; 18. a front top plate; 19. a rear roof panel; 20. a front axle assembly; 21. a first side plate; 22. a second side plate; 23. a third side plate; 24. an ear plate.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.

As shown in fig. 1 to 17, the utility model provides a lap welding tool suitable for excavator swing arm, including base 1, a rear centering device 2 for locating the swing arm front fork, a movable front fork positioning device 3 for keeping two front fork side plates of the swing arm front fork parallel, a tail shaft hole positioning device 4 for providing support for the swing arm front fork and for locating the swing arm front fork, a front centering device 5 for locating the front shaft assembly and for applying downward pressing force to the front shaft assembly, a front shaft hole positioning device 6 for providing support for the front shaft assembly and for locating the front shaft assembly, an ear plate positioning device 7 for locating the ear plate, a first fastening device 8 for applying pressing force to the front top plate and the first side plate, a second fastening device 9 for applying pressing force to the second side plate, a third fastening device 10 for applying pressing force to the third side plate, a third fastening device for applying pressing force to the front side plate, a second fastening device for fixing the front shaft assembly, a third fastening device, The front top plate and the rear top plate are positioned between the front fork of the movable arm and a front shaft assembly and are sequentially arranged along the horizontal direction.

Specifically, as shown in fig. 1 to 4, the excavator boom is composed of a boom front fork, a front axle assembly, a front top plate, a rear top plate, a front bottom plate, a rear bottom plate, two ear plates, a first side plate, a second side plate and a third side plate, wherein the front top plate is located between the first side plate and the second side plate, the rear top plate is located between the second side plate and the third side plate, the front bottom plate is located between the first side plate and the second side plate, the front top plate and the front bottom plate are arranged oppositely, the front bottom plate is located below the front top plate, the rear bottom plate is located between the second side plate and the third side plate, the rear top plate and the rear bottom plate are arranged oppositely, and the rear bottom plate is located below the. The movable arm front fork is composed of a bending plate and two front fork side plates, the two front fork side plates are arranged in parallel, the bending plate is located between the two front fork side plates and is in welded connection with the two front fork side plates, and the bending plate is of a U-shaped structure. One end in the length direction of the first side plate is welded with the front axle assembly, the other end in the length direction of the first side plate is welded with one end in the length direction of the third side plate, the other end in the length direction of the third side plate is welded with one end of the bending plate of the movable arm front fork, one end in the length direction of the second side plate is welded with the front axle assembly, and the other end in the length direction of the second side plate is welded with the other end of the bending plate of the movable arm front fork. The one end and the front axle subassembly welded connection on the length direction of preceding roof, the one end welded connection on the length direction of the other end and the length direction of back roof of preceding roof, the one end welded connection on the length direction of the other end and the swing arm front fork of back roof, preceding roof and with first curb plate and second curb plate welded connection, back roof and with third curb plate and first curb plate welded connection. One end of the front bottom plate in the length direction is welded with the front shaft assembly, the other end of the front bottom plate in the length direction is welded with one end of the rear bottom plate in the length direction, the other end of the rear bottom plate in the length direction is welded with the other front fork side plate of the movable arm front fork, the bottom top plate is welded with the first side plate and the second side plate, and the rear bottom plate is welded with the third side plate and the first side plate. Through the utility model discloses a lap welding frock realizes the swing arm front fork, the front axle subassembly, the preceding roof, the back roof, the front bottom plate, the back bottom plate, first curb plate, the fixed of second curb plate and third curb plate, then weld swing arm front fork and second curb plate, the third curb plate, back roof and back bottom plate, to preceding roof and back roof, first curb plate and second curb plate weld, to preceding bottom plate and back bottom plate, first curb plate and second curb plate weld, to front axle subassembly and preceding roof, the front bottom plate, first curb plate and second curb plate weld, weld otic placode and second curb plate.

As shown in fig. 1 to 3, the base 1 is horizontally disposed, the length direction of the base 1 is parallel to the first direction, the width direction of the base 1 is parallel to the second direction, both the first direction and the second direction are horizontal, and the first direction and the second direction are perpendicular. The rear centering device 2 and the front centering device 5 are positioned on the same straight line parallel to the first direction, the moving direction of the front fork positioning device 3 is parallel to the second direction, the first fastening device 8, the sixth fastening device 13, the third fastening device 10, the fourth fastening device 11 and the seventh fastening device 14 are positioned on the same straight line parallel to the first direction, the first fastening device 8, the sixth fastening device 13, the third fastening device 10, the fourth fastening device 11 and the seventh fastening device 14 are sequentially arranged along the length direction of the base 1, the second fastening device 9 and the fifth fastening device 12 are positioned on the other straight line parallel to the first direction, and the second fastening device 9 and the fifth fastening device 12 are sequentially arranged along the length direction of the base 1. The tail shaft hole positioning device 4 and the front shaft hole positioning device 6 are positioned on the same straight line parallel to the first direction, and the tail shaft hole positioning device 4 and the front shaft hole positioning device 6 are positioned between the front centering device 5 and the rear centering device 2.

As shown in fig. 1 to 5, the rear centering device 2 includes a rear bracket 201, a rear suspension arm 202, a rear positioning shaft 203 provided on the rear suspension arm 202 and inserted into a shaft hole of a front fork side plate of the swing arm front fork, and a rear lift actuator 204 provided on the rear bracket 201 and controlling the rear suspension arm 202 to lift. The back bracket 201 is vertical setting on base 1, the lower extreme and the base 1 fixed connection of back bracket 201. A rear lift actuator 204 is vertically disposed on the rear bracket 201, the rear lift actuator 204 preferably being a hydraulic cylinder. The rear cantilever 202 is located above the rear bracket 201, the length direction of the rear cantilever 202 is parallel to the first direction, and the rear cantilever 202 is fixedly connected with the piston rod of the rear lifting actuator 204. The rear positioning shaft 203 is vertically arranged, the upper end of the rear positioning shaft 203 is fixedly connected with one end of the rear suspension arm 202, and the lower end of the rear positioning shaft 203 is used for being inserted into a shaft hole in a front fork side plate of the movable arm front fork and used for achieving accurate positioning of the movable arm front fork. The axis of the rear positioning shaft 203 is a vertical line, and the lower end of the rear positioning shaft 203 is a cylindrical structure. The rear lifting actuator 204 is used for controlling the rear cantilever 202 to move up and down, the rear cantilever 202 drives the rear positioning shaft 203 to move synchronously, and the rear positioning shaft 203 can be inserted into a shaft hole on the side plate of the front fork after the rear positioning shaft 203 moves downwards; after the rear positioning shaft 203 is moved upward, the rear positioning shaft 203 can be pulled out from the shaft hole of the front fork side plate.

As shown in fig. 1 to 4 and 7, the tail shaft hole positioning device 4 includes a tail shaft positioning seat 401 and a tail shaft positioning shaft 402 disposed on the tail shaft positioning seat 401, the tail shaft positioning seat 401 is vertically disposed on the base 1, a lower end of the tail shaft positioning seat 401 is fixedly connected to the base 1, and the tail shaft positioning seat 401 and the rear bracket 201 are disposed on a same straight line parallel to the first direction. Tail location axle 402 is vertical to be set up on tail axle positioning seat 401, and the upper end of tail location axle 402 is arranged in inserting the shaft hole on the front fork curb plate of swing arm front fork for realize the accurate positioning of swing arm front fork, the upper end of tail location axle 402 is cylindrical structure. After realizing the location of movable arm front fork, two front fork curb plates are the horizontality and two front fork curb plates are arranged in proper order along vertical direction, the lower extreme of back location axle 203 is arranged in inserting the shaft hole of the front fork curb plate that is located the top in two front fork curb plates, the upper end of afterbody location axle 402 is arranged in inserting the shaft hole of the front fork curb plate that is located the below in two front fork curb plates, and through the cooperation of back centring means 2 and tail shaft hole positioner 4, realize the accurate location of movable arm front fork, help improving the product quality of the excavator swing arm after the welding.

As shown in fig. 1 to 4 and 6, the front fork positioning device 3 includes a front fork positioning seat 301, a first sliding seat 302 and a second sliding seat 303 movably disposed on the front fork positioning seat 301, and an adjusting mechanism disposed on the front fork positioning seat 301 and configured to control the first sliding seat 302 and the second sliding seat 303 to ascend and descend, the first sliding seat 302 is located above the second sliding seat 303, the first sliding seat 302 is configured to provide support to one of the two front fork side plates of the movable arm front fork located above, and the second sliding seat 303 is configured to apply pressing force to one of the two front fork side plates of the movable arm front fork located below. The adjusting mechanism comprises a rotatable adjusting lead screw 304 which is arranged on the front fork positioning seat 301 and is in threaded connection with the first sliding seat 302 and the second sliding seat 303, the adjusting lead screw 304 is vertically arranged, and a vertical guide rail 305 which guides the first sliding seat 302 and the second sliding seat 303 is arranged on the front fork positioning seat 301. The front fork positioning seat 301 is movably arranged on the top surface of the base 1, a horizontal guide rail 306 for guiding the front fork positioning seat 301 is arranged on the top surface of the base 1, the length direction of the horizontal guide rail 306 is parallel to the second direction, the front fork positioning seat 301 can move along the length direction of the horizontal guide rail 306, and the lower end of the front fork positioning seat 301 is connected with the horizontal guide rail 306 in a sliding manner. When the front fork positioning seat 301 moves, the first sliding seat 302, the second sliding seat 303 and the adjusting mechanism are driven to move synchronously, so that the material placing before welding and the material taking after welding are convenient. Front fork positioning seat 301 and tail shaft hole positioner 4 are in on the same straight line that parallels with the second direction, adjust lead screw 304 and be vertical setting, and the axis of adjusting lead screw 304 is vertical line, and vertical guide rail 305 is fixed to be set up on front fork positioning seat 301, and vertical guide rail 305 is used for playing the guide effect to first sliding seat 302 and second sliding seat 303. The first sliding seat 302 and the second sliding seat 303 are sequentially arranged along the axis of the adjusting screw 304, the first sliding seat 302, the second sliding seat 303 and the adjusting screw 304 form a screw transmission, one end of the first sliding seat 302 is in threaded connection with the adjusting screw 304, the other end of the first sliding seat 302 is used for being inserted between two front fork side plates of the movable arm front fork, one end of the second sliding seat 303 is in threaded connection with the adjusting screw 304, and the other end of the second sliding seat 303 is used for being inserted between two front fork side plates of the movable arm front fork. After the first sliding seat 302 and the second sliding seat 303 are inserted between the two front fork side plates, the adjusting screw 304 is rotated, the adjusting screw 304 drives the first sliding seat 302 and the second sliding seat 303 to move along the vertical direction and enables the moving directions of the first sliding seat 302 and the second sliding seat 303 to be opposite, the first sliding seat 302 moves upwards, the second sliding seat 303 moves downwards until the first sliding seat 302 is attached to the bottom surface of the front fork side plate located above the two front fork side plates and the second sliding seat 303 is attached to the top surface of the front fork side plate located below the two front fork side plates, the front fork side plate located above the two front fork side plates is clamped between the first sliding seat 302 and the rear positioning shaft 203, the front fork side plate located below the two front fork side plates is clamped between the second sliding seat 303 and the tail positioning shaft 402, so that the front fork side plates are kept in a horizontal state, and the parallelism of the two front fork side plates is ensured to meet the requirements, the welding method is beneficial to improving the product quality of the welded excavator movable arm.

As shown in fig. 1 to 4 and 8, the front centering device 5 includes a front bracket 501, a front suspension arm 502, a front positioning shaft 503 disposed on the front suspension arm 502 and inserted into a shaft hole of the front shaft assembly, and a front lifting actuator 504 disposed on the front bracket 501 and controlling the front suspension arm 502 to lift. The front bracket 501 is vertically arranged on the base 1, and the lower end of the front bracket 501 is fixedly connected with the base 1. The front lift actuator 504 is vertically disposed on the front bracket 501, and the front lift actuator 504 is preferably a hydraulic cylinder. The front suspension arm 502 is located above the front bracket 501, the length direction of the front suspension arm 502 is parallel to the first direction, and the front suspension arm 502 is fixedly connected with the piston rod of the front lifting actuator 504. The front positioning shaft 503 is vertically arranged, the upper end of the front positioning shaft 503 is fixedly connected with one end of the front suspension arm 502, and the lower end of the front positioning shaft 503 is used for being downwards inserted into a shaft hole of the front shaft assembly from the upper side of the front shaft assembly, so that the front shaft assembly is accurately positioned. The axis of the front positioning shaft 503 is a vertical line, and the lower end of the front positioning shaft 503 is a cylindrical structure. The front lifting actuator 504 is used for controlling the front cantilever 502 to move up and down, the front cantilever 502 drives the front positioning shaft 503 to move synchronously, so that the front positioning shaft 503 can be inserted into the shaft hole of the front shaft assembly after the front positioning shaft 503 moves downwards; after the front positioning shaft 503 is moved upward, the front positioning shaft 503 can be drawn out from the shaft hole of the front shaft assembly.

As shown in fig. 1 to 4 and 9, the front axle hole positioning device 6 includes a front axle positioning seat 601 and a front positioning axle 602 disposed on the front axle positioning seat 601, the front axle positioning seat 601 is vertically disposed on the base 1, a lower end of the front axle positioning seat 601 is fixedly connected to the base 1, the front axle positioning seat 601 and the front bracket 501 are disposed on a same straight line parallel to the first direction, and the front axle positioning seat 601 and the rear positioning axle 402 are disposed between the front bracket 501 and the rear bracket 201. The front positioning shaft 602 is vertically arranged on the front shaft positioning seat 601, the upper end of the front positioning shaft 602 is used for being inserted into a shaft hole of the front shaft assembly from the lower part of the front shaft assembly, the front shaft assembly is accurately positioned, and the upper end of the front positioning shaft 602 is of a cylindrical structure. After the positioning of the front axle assembly is realized, the axis of the axle hole of the front axle assembly is a vertical line. Through the matching of the front centering device 5 and the front shaft hole positioning device 6, the accurate positioning of the front shaft assembly is realized, and the product quality of the welded excavator movable arm is improved.

As shown in fig. 1 to fig. 4 and fig. 10, the ear plate positioning device 7 includes an ear plate positioning seat 701, an ear plate positioning shaft 702 vertically disposed on the ear plate positioning seat 701, a supporting plate 703 disposed on the ear plate positioning seat 701 and used for supporting the ear plate, and a supporting block 704 sleeved on the ear plate positioning seat 701 and located between two ear plates. The ear plate positioning seat 701 is vertically arranged on the base 1, and the lower end of the ear plate positioning seat 701 is fixedly connected with the base 1. The fixed upper end that sets up at otic placode positioning seat 701 of layer board 703, layer board 703 are the level setting, and otic placode positioning seat 701 is arranged in inserting the shaft hole of two otic placodes, and layer board 703 provides the support to the otic placode that is located the below in two otic placodes, and supporting shoe 704 provides the support to the otic placode that is located the top in two otic placodes, makes two otic placodes be the horizontality and fixes a position, and the outer wall laminating of two otic placodes and second curb plate. The inside of otic placode positioning seat 701 has the mounting hole that lets otic placode location axle 702 insert, when fixing a position two otic placodes, inserts otic placode location axle 702's mounting hole behind the axle hole that passes an otic placode, the centre bore of supporting shoe 704, the axle hole of another otic placode downwards in proper order with otic placode location axle 702, and supporting shoe 704 presss from both sides between two otic placodes, realizes the accurate positioning of two otic placodes.

As shown in fig. 1 to 4, a plurality of lower cushion plates 15 are provided on the top surface of the base 1, and during welding, the lower cushion plates 15 are used to support the front bottom plate, the rear bottom plate, the first side plate, the second side plate, the third side plate, and the boom front fork, so that the bottom surface of the front fork side plate located below the two front fork side plates is attached to the top surface of one lower cushion plate 15, the bottom surfaces of the first side plate, the second side plate, and the third side plate are respectively attached to the top surfaces of the plurality of lower cushion plates 15, and the first side plate, the second side plate, and the third side plate are in a vertical state, so that the front bottom plate and the rear bottom plate are respectively attached to the top surfaces of the plurality of lower cushion plates 15.

As shown in fig. 1 to 4 and 11, the first fastening device 8 is configured to apply a pressing force to the first side plate, so that the first side plate, the front top plate and the front bottom plate are kept in a fit state, and reliability and accuracy of positioning and fixing the first side plate are improved, wherein a direction of the pressing force applied to the first side plate by the first fastening device 8 is parallel to the second direction. The first fastening device 8 includes a first fastening bracket 801, a first top rod 802 in threaded connection with the first fastening bracket 801 and used for contacting with the first side plate, a first upper cantilever 803 arranged on the first fastening bracket 801, and a first upper pressing rod 804 vertically arranged on the first upper cantilever 803 and used for applying pressing force to the front top plate, wherein the first upper pressing rod 804 is in threaded connection with the first upper cantilever 803. The first fastening bracket 801 is vertically arranged on the base 1, and the lower end of the first fastening bracket 801 is fixedly connected with the top surface of the base 1. First ejector pin 802 sets up a plurality ofly along vertical direction on first fastening support 801, and the length direction of first ejector pin 802 parallels with the second direction, and first ejector pin 802 is threaded connection with first fastening support 801, is equipped with the screw hole that lets first ejector pin 802 pass on first fastening support 801 correspondingly, through rotatory first ejector pin 802, makes first ejector pin 802 move along the position that the first curb plate is kept away from or is close to first curb plate to the horizontal direction orientation, until the lateral surface separation or the contact of first ejector pin 802 and first curb plate. After the first side plate is fixed, the end face of the first top rod 802 contacts with the outer side face of the first side plate, so that the first side plate abuts against the front top plate and the front bottom plate. The first fastening device 8 is used for applying downward pressing force to the front top plate, the first upper cantilever 803 is rotatably arranged at the top of the first fastening bracket 801, one end of the first upper cantilever 803 is connected with the first fastening bracket 801 through a pin shaft, the first upper pressing rod 804 is arranged at the other end of the first upper cantilever 803, the length direction of the first upper cantilever 803 is perpendicular to the length direction of the first fastening bracket 801, and the axis of the first upper pressing rod 804 is parallel to the length direction of the first fastening bracket 801. The first upper pressing rod 804 is in threaded connection with the first upper cantilever 803, and a threaded hole through which the first upper pressing rod 804 passes is correspondingly formed in the first upper cantilever 803. By rotating the first upper pressing rod 804, the first upper pressing rod 804 can be moved towards a position far away from or close to the front top plate along the vertical direction until the lower end face of the first upper pressing rod 804 is separated from or contacted with the top surface of the front top plate, and the front top plate is pressed or loosened in the vertical direction.

In this embodiment, as shown in fig. 11, two first top rods 802 are arranged on the first fastening bracket 801, and a certain distance is provided between the two first top rods 802, so that the two first top rods 802 can be respectively contacted with the first side plate at the upper portion and the lower portion of the first side plate, and the first side plate is firmly fixed and uniformly stressed.

As shown in fig. 1 to 4 and 12, the second fastening device 9 is used for applying a pressing force to the second side plate to keep the second side plate in a state of being attached to the front top plate, the front bottom plate, the rear top plate and the rear bottom plate, so as to improve the reliability and accuracy of positioning and fixing the second side plate, and the direction of the pressing force applied to the second side plate by the second fastening device 9 is parallel to the second direction. The second fastening device 9 includes a second fastening bracket 901 and a second mandril 902 which is connected with the second fastening bracket 901 by screw threads and is used for contacting with the second side plate, the second fastening bracket 901 is vertically arranged on the base 1, and the lower end of the second fastening bracket 901 is fixedly connected with the top surface of the base 1. The second ejector rod 902 is arranged on the second fastening support 901 along the vertical direction, the length direction of the second ejector rod 902 is parallel to the second direction, the second ejector rod 902 is in threaded connection with the second fastening support 901, a threaded hole for the second ejector rod 902 to pass through is correspondingly formed in the second fastening support 901, and the second ejector rod 902 is moved towards the position far away from the second side plate or close to the second side plate along the horizontal direction by rotating the second ejector rod 902 until the second ejector rod 902 is separated from or contacts the outer side face of the second side plate. After the second side plate is fixed, the end surface of the second ejector rod 902 contacts with the outer side surface of the second side plate, so that the second side plate abuts against the front top plate, the front bottom plate, the rear top plate and the rear bottom plate.

In this embodiment, as shown in fig. 12, two second push rods 902 are arranged on the second fastening bracket 901, and a certain distance is provided between the two second push rods 902, so that the two second push rods 902 can be respectively contacted with the second side plate at the upper and lower positions of the second side plate, and the second side plate is firmly fixed and uniformly stressed. The number of the second fastening brackets 901 is two, and the two second fastening brackets 901 are located on the same straight line parallel to the first direction.

As shown in fig. 1 to 4 and 13, the third fastening device 10 is used for applying a pressing force to the third side panel to keep the third side panel in a fit state with the rear top panel and the rear bottom panel, so as to improve the reliability and accuracy of positioning and fixing the third side panel, and the direction of the pressing force applied to the third side panel by the third fastening device 10 is parallel to the second direction. The third fastening device 10 includes a third fastening bracket 1001 and a third push rod 1002 connected to the third fastening bracket 1001 by screw threads and used for contacting with a third side plate, the third fastening bracket 1001 is vertically disposed on the base 1, and the lower end of the third fastening bracket 1001 is fixedly connected to the top surface of the base 1. The third ejector rod 1002 is arranged on the third fastening support 1001 along the vertical direction, the length direction of the third ejector rod 1002 is parallel to the second direction, the third ejector rod 1002 is in threaded connection with the third fastening support 1001, a threaded hole for allowing the third ejector rod 1002 to pass through is correspondingly formed in the third fastening support 1001, and the third ejector rod 1002 is enabled to move towards the position far away from the third side plate or close to the third side plate along the horizontal direction until the third ejector rod 1002 is separated from or contacts the outer side face of the third side plate. After the third side plate is fixed, the end surface of the third ejector rod 1002 contacts with the outer side surface of the third side plate, so that the third side plate abuts against the rear top plate and the rear bottom plate.

In this embodiment, as shown in fig. 13, two third push rods 1002 are arranged on the third fastening bracket 1001, and a certain distance is provided between the two third push rods 1002, so that the two third push rods 1002 can contact with the third side plate at the upper and lower positions of the third side plate, respectively, and the third side plate is firmly fixed and uniformly stressed.

As shown in fig. 1 to 4 and 14, the fourth fastening device 11 is used for applying a pressing force to the third side panel to keep the fifth side panel in a fit state with the rear top panel and the rear bottom panel, so as to improve the reliability and accuracy of positioning and fixing the third side panel, and the direction of the pressing force applied to the third side panel by the fourth fastening device 11 is parallel to the second direction. The fourth fastening device 11 includes a fourth fastening bracket 1101, a fourth push rod 1102 screwed with the fourth fastening bracket 1101 and used for contacting the third side panel, a second upper suspension arm 1103 disposed on the fourth fastening bracket 1101, and a second upper push rod 1104 vertically disposed on the second upper suspension arm 1103 and used for applying a pressing force to the rear top panel, the second upper push rod 1104 being screwed with the second upper suspension arm 1103. The fourth fastening bracket 1101 is vertically arranged on the base 1, and the lower end of the fourth fastening bracket 1101 is fixedly connected with the top surface of the base 1. The fourth push rod 1102 is arranged on the fourth fastening support 1101 along the vertical direction, the length direction of the fourth push rod 1102 is parallel to the second direction, the fourth push rod 1102 is in threaded connection with the fourth fastening support 1101, a threaded hole for allowing the fourth push rod 1102 to pass through is correspondingly formed in the fourth fastening support 1101, and the fourth push rod 1102 moves towards a position far away from the third side plate or close to the third side plate along the horizontal direction until the fourth push rod 1102 is separated from or contacts with the outer side face of the third side plate. After the third side plate is fixed, the end surface of the fourth push rod 1102 is in contact with the outer side surface of the third side plate, so that the third side plate abuts against the rear top plate and the rear bottom plate. The fourth fastening device 11 is used for applying a downward pressing force to the rear top plate, the second upper suspension arm 1103 is rotatably disposed at the top of the fourth fastening bracket 1101, one end of the second upper suspension arm 1103 is connected with the fourth fastening bracket 1101 through a pin, the second upper pressing rod 1104 is disposed at the other end of the second upper suspension arm 1103, the length direction of the second upper suspension arm 1103 is perpendicular to the length direction of the fourth fastening bracket 1101, and the axis of the second upper pressing rod 1104 is parallel to the length direction of the fourth fastening bracket 1101. The second upper pressing rod 1104 is in threaded connection with the second upper suspension arm 1103, and a threaded hole through which the second upper pressing rod 1104 passes is correspondingly formed in the second upper suspension arm 1103. By rotating the second upper pressing rod 1104, the second upper pressing rod 1104 can be moved towards a position far away from or close to the rear top plate along the vertical direction until the lower end face of the second upper pressing rod 1104 is separated from or contacted with the top surface of the rear top plate, and the rear top plate is pressed or loosened in the vertical direction.

In this embodiment, as shown in fig. 14, two fourth push rods 1102 are arranged on the fourth fastening bracket 1101, and a certain distance is provided between the two fourth push rods 1102, so that the two fourth push rods 1102 can contact with the third side plate at the upper and lower positions of the third side plate, respectively, and the third side plate is firmly fixed and uniformly stressed. The third fastening device 10 is used for applying pressing force to the third side plate at one end of the third side plate connected with the first side plate, and the fourth fastening device 11 is used for applying pressing force to the third side plate at one end of the third side plate connected with the bending plate of the boom front fork.

As shown in fig. 1 to 4 and 15, the fifth fastening device 12 is used for applying a pressing force to the second side plate to keep the fifth side plate in a fit state with the rear top plate and the rear bottom plate, so as to improve the reliability and accuracy of positioning and fixing the second side plate, and the direction of the pressing force applied to the second side plate by the fifth fastening device 12 is parallel to the second direction. The fifth fastening device 12 includes a fifth fastening bracket 1201, a fifth push rod 1202 which is in threaded connection with the fifth fastening bracket 1201 and is used for contacting the second side plate, a third upper suspension arm 1203 arranged on the fifth fastening bracket 1201, and a third upper pressing rod 1204 which is vertically arranged on the third upper suspension arm 1203 and is used for applying pressing force to the rear top plate, wherein the third upper pressing rod 1204 is in threaded connection with the third upper suspension arm 1203. The fifth fastening bracket 1201 is vertically arranged on the base 1, and the lower end of the fifth fastening bracket 1201 is fixedly connected with the top surface of the base 1. The fifth ejector rod 1202 is arranged on the fifth fastening bracket 1201 in the vertical direction, the length direction of the fifth ejector rod 1202 is parallel to the second direction, the fifth ejector rod 1202 and the fifth fastening bracket 1201 are in threaded connection, correspondingly, a threaded hole for allowing the fifth ejector rod 1202 to pass through is formed in the fifth fastening bracket 1201, and the fifth ejector rod 1202 is moved towards a position far away from the second side plate or close to the second side plate along the horizontal direction by rotating the fifth ejector rod 1202 until the fifth ejector rod 1202 is separated from or in contact with the outer side surface of the second side plate. After the second side plate is fixed, the end surface of the fifth top bar 1202 contacts with the outer side surface of the second side plate, so that the second side plate abuts against the rear top plate and the rear bottom plate. The fifth fastening device 12 is configured to apply a downward pressing force to the rear top plate, the third upper suspension arm 1203 is rotatably disposed at the top of the fifth fastening bracket 1201, one end of the third upper suspension arm 1203 is connected to the fifth fastening bracket 1201 through a pin, the third upper pressing rod 1204 is disposed at the other end of the third upper suspension arm 1203, the length direction of the third upper suspension arm 1203 is perpendicular to the length direction of the fifth fastening bracket 1201, and the axis of the third upper pressing rod 1204 is parallel to the length direction of the fifth fastening bracket 1201. The third upper pressing rod 1204 is in threaded connection with the third upper suspension arm 1203, and correspondingly, a threaded hole for the third upper pressing rod 1204 to pass through is formed in the third upper suspension arm 1203. By rotating the third upper pressing rod 1204, the third upper pressing rod 1204 can be moved towards a position far away from or close to the rear top plate along the vertical direction until the lower end face of the third upper pressing rod 1204 is separated from or contacted with the top surface of the rear top plate, and the rear top plate is pressed or loosened in the vertical direction.

In this embodiment, as shown in fig. 15, two fifth push rods 1202 are disposed on the fifth fastening bracket 1201, and a certain distance is provided between the two fifth push rods 1202, so that the two fifth push rods 1202 can contact with the second side plate at the upper and lower positions of the second side plate, respectively, and the second side plate is firmly fixed and uniformly stressed. The fifth fastening device 12 is used for applying pressing force to the second side plate at one end of the second side plate connected with the bending plate of the boom front fork, and the fifth fastening device 12 and the fourth fastening device 11 are arranged oppositely.

As shown in fig. 1 to 4 and 16, the sixth fastening device 13 is configured to apply a pressing force to the first side plate, so that the first side plate is kept in a state of being attached to the front top plate and the front bottom plate, and reliability and accuracy of positioning and fixing the first side plate are improved, wherein a direction of the pressing force applied to the first side plate by the sixth fastening device 13 is parallel to the second direction. The sixth fastening device 13 includes a sixth fastening bracket 1301 and a sixth push rod 1302 in threaded connection with the sixth fastening bracket 1301 and used for contacting with the first side plate, the sixth fastening bracket 1301 is vertically disposed on the base 1, and the lower end of the sixth fastening bracket 1301 is fixedly connected with the top surface of the base 1. The sixth top bar 1302 is arranged on the sixth fastening bracket 1301 in the vertical direction, the length direction of the sixth top bar 1302 is parallel to the second direction, the sixth top bar 1302 is in threaded connection with the sixth fastening bracket 1301, a threaded hole for allowing the sixth top bar 1302 to pass through is correspondingly formed in the sixth fastening bracket 1301, and the sixth top bar 1302 is moved towards a position far away from or close to the first side plate along the horizontal direction by rotating the sixth top bar 1302 until the sixth top bar 1302 is separated from or contacts with the outer side face of the first side plate. After the first side plate is fixed, the end face of the sixth top rod 1302 contacts with the outer side face of the first side plate, so that the first side plate abuts against the front top plate and the front bottom plate.

In this embodiment, as shown in fig. 16, two sixth top bars 1302 are arranged on the sixth fastening bracket 1301, and a certain distance is provided between the two sixth top bars 1302, so that the two sixth top bars 1302 can be respectively contacted with the first side plate at the upper and lower positions of the first side plate, and the first side plate is firmly fixed and uniformly stressed. The sixth fastening device 13 is used for applying pressing force to the first side plate at the end of the first side plate connected with the third side plate, and the first fastening device 8 is used for applying pressing force to the first side plate at the end of the first side plate connected with the front axle assembly.

As shown in fig. 1 to 4 and 17, the seventh fastening device 14 is configured to apply a pressing force to the bending plate to keep the bending plate and the third side plate aligned, so as to improve the reliability and accuracy of positioning and fixing the boom fork, and the direction of the pressing force applied to the bending plate by the seventh fastening device 14 is parallel to the second direction. The seventh fastening device 14 comprises a seventh fastening bracket 1401 and a seventh push rod 1402 which is in threaded connection with the seventh fastening bracket 1401 and is used for contacting with the bending plate, the seventh fastening bracket 1401 is vertically arranged on the base 1, and the lower end of the seventh fastening bracket 1401 is fixedly connected with the top surface of the base 1. The seventh ejector pins 1402 are arranged on the seventh fastening support 1401 in the vertical direction, the length direction of the seventh ejector pins 1402 is parallel to the second direction, the seventh ejector pins 1402 and the seventh fastening support 1401 are in threaded connection, correspondingly, threaded holes for the seventh ejector pins 1402 to pass through are formed in the seventh fastening support 1401, and the seventh ejector pins 1402 are rotated to move towards positions far away from or close to the bending plate along the horizontal direction until the seventh ejector pins 1402 are separated from or contacted with the outer side face of the bending plate.

In this embodiment, as shown in fig. 17, two seventh push rods 1402 are disposed on the seventh fastening bracket 1401, and a certain distance is provided between the two seventh push rods 1402, so that the two seventh push rods 1402 can be contacted with the bending plate at the upper portion and the lower portion of the bending plate respectively, and the bending plate is firmly fixed and uniformly stressed. The seventh fastening device 14 is used for applying pressing force to the bending plate at one end of the bending plate connected with the third side plate.

The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. Various insubstantial improvements are made by adopting the method conception and the technical proposal of the utility model; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.

Claims

1. Be suitable for overlap welding frock of excavator swing arm, its characterized in that: the positioning device comprises a rear centering device used for positioning a front fork of a movable arm, a front fork positioning device which is movably arranged and used for keeping two front fork side plates of the front fork of the movable arm in parallel, a tail shaft hole positioning device used for supporting the front fork of the movable arm and used for positioning the front fork of the movable arm, a front centering device used for positioning a front shaft assembly and used for applying downward pressing force to the front shaft assembly, a front shaft hole positioning device used for supporting the front shaft assembly and used for positioning the front shaft assembly, an ear plate positioning device used for positioning an ear plate, a first fastening device used for applying pressing force to a front top plate and a first side plate, a second fastening device used for applying pressing force to a second side plate, a third fastening device used for applying pressing force to a third side plate, a fourth fastening device used for applying pressing force to a rear top plate and the third side plate, a fifth fastening device used for applying pressing force to the rear top plate and the second side plate, and a fifth fastening device used for applying pressing force to the first side plate And the front top plate and the rear top plate are positioned between the movable arm front fork and the front shaft assembly and are sequentially arranged along the horizontal direction, the front top plate is positioned between the first side plate and the second side plate, and the rear top plate is positioned between the second side plate and the third side plate.

2. The lap welding tool suitable for the movable arm of the excavator according to claim 1, wherein: the rear centering device comprises a rear bracket, a rear cantilever, a rear positioning shaft and a rear lifting actuator, wherein the rear positioning shaft is arranged on the rear cantilever and is used for being inserted into a shaft hole of a front fork side plate of the movable arm front fork, and the rear lifting actuator is arranged on the rear bracket and is used for controlling the rear cantilever to lift.

3. The lap welding tool suitable for the movable arm of the excavator according to claim 1, wherein: the front fork positioning device comprises a front fork positioning seat, a first sliding seat and a second sliding seat which are movably arranged on the front fork positioning seat, and an adjusting mechanism which is arranged on the front fork positioning seat and is used for controlling the first sliding seat and the second sliding seat to lift, wherein the first sliding seat is positioned above the second sliding seat, the first sliding seat is used for supporting one front fork side plate which is positioned above the two front fork side plates of the movable arm front fork, and the second sliding seat is used for applying pressing force to one front fork side plate which is positioned below the two front fork side plates of the movable arm front fork.

4. The lap welding tool suitable for the movable arm of the excavator according to claim 3, wherein: the adjusting mechanism comprises an adjusting lead screw which is rotatably arranged on the front fork positioning seat and is in threaded connection with the first sliding seat and the second sliding seat, the adjusting lead screw is vertically arranged, and a vertical guide rail which guides the first sliding seat and the second sliding seat is arranged on the front fork positioning seat.

5. The lap welding tool suitable for the excavator boom according to any one of claims 1 to 4, characterized in that: the front centering device comprises a front bracket, a front cantilever, a front positioning shaft arranged on the front cantilever and used for being inserted into a shaft hole of the front shaft assembly, and a front lifting actuator arranged on the front bracket and used for controlling the front cantilever to lift.

6. The lap welding tool suitable for the excavator boom according to any one of claims 1 to 4, characterized in that: the ear plate positioning device comprises an ear plate positioning seat, an ear plate positioning shaft vertically arranged on the ear plate positioning seat, a supporting plate arranged on the ear plate positioning seat and used for supporting the ear plate, and a supporting block sleeved on the ear plate positioning seat and positioned between the two ear plates.

7. The lap welding tool suitable for the excavator boom according to any one of claims 1 to 4, characterized in that: the first fastening device comprises a first fastening support, a first ejector rod, a first upper cantilever and a first upper pressing rod, wherein the first ejector rod is in threaded connection with the first fastening support and is used for being in contact with the first side plate, the first upper cantilever is arranged on the first fastening support, the first upper pressing rod is vertically arranged on the first upper cantilever and is used for applying pressing force to the front top plate, and the first upper pressing rod is in threaded connection with the first upper cantilever.

8. The lap welding tool suitable for the excavator boom according to any one of claims 1 to 4, characterized in that: the second fastening device comprises a second fastening support and a second ejector rod which is in threaded connection with the second fastening support and is used for being in contact with the second side plate, the third fastening device comprises a third fastening support and a third ejector rod which is in threaded connection with the third fastening support and is used for being in contact with the third side plate, and the sixth fastening device comprises a sixth fastening support and a sixth ejector rod which is in threaded connection with the sixth fastening support and is used for being in contact with the second side plate.

9. The lap welding tool suitable for the excavator boom according to any one of claims 1 to 4, characterized in that: the fourth fastening device comprises a fourth fastening support, a fourth ejector rod, a second upper cantilever and a second upper pressure rod, wherein the fourth ejector rod is in threaded connection with the fourth fastening support and is used for being in contact with the third side plate, the second upper cantilever is arranged on the fourth fastening support, the second upper pressure rod is vertically arranged on the second upper cantilever and is used for applying pressing force to the rear top plate, and the second upper pressure rod is in threaded connection with the second upper cantilever.

10. The lap welding tool suitable for the excavator boom according to any one of claims 1 to 4, characterized in that: the fifth fastening device comprises a fifth fastening support, a fifth ejector rod, a third upper cantilever and a third upper pressure rod, wherein the fifth ejector rod is in threaded connection with the fifth fastening support and is used for being in contact with the first side plate, the third upper cantilever is arranged on the fifth fastening support, the third upper pressure rod is vertically arranged on the third upper cantilever and is used for applying pressing force to the rear top plate, and the third upper pressure rod is in threaded connection with the third upper cantilever.