CN211516532U - Overlap welding tool suitable for excavator movable arm - Google Patents

Abstract

The utility model discloses a lap welding tool suitable for an excavator motor arm, comprising a rear centering device used for positioning the front fork of the boom arm, and a rear centering device used for keeping the two front fork side plates of the front fork of the boom arm in phase. Parallel front fork positioning device, tail axle hole positioning device for providing support to boom front fork, front centering device for positioning front axle assembly, front axle hole positioning for providing support to front axle assembly A device, an ear plate positioning device for positioning the ear plate, and a plurality of fastening devices for applying a pressing force to each plate body of an excavator arm. The utility model is suitable for the lap welding tool of the excavator arm, and can accurately position and fix the various components constituting the excavator arm, and then carry out welding and assembly, with high production efficiency and good versatility, so that the product quality is stable and the reject rate is reduced. Low, the skill requirements for welding workers are greatly reduced, and it is suitable for mass production.

Description

Lap welding tool for excavator arm

technical field

The utility model belongs to the technical field of engineering machinery processing equipment, in particular, the utility model relates to a lap welding tool suitable for an excavator arm.

Background technique

The excavator arm is a welded assembly. During the welding process of the existing excavator arm, only some simple technological supports are used to fix the relevant parts that make up the boom, and then perform welding. The welding time is long and the machining accuracy is poor. The production efficiency is low, the product quality is unstable, the welding technology level of the workers is very high, the scrap rate is high, and it is not suitable for mass production.

Utility model content

The utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a lap welding tool suitable for the excavator arm, which aims to improve the production efficiency of the excavator arm.

In order to achieve the above purpose, the technical solution adopted by the present invention is: a lap welding tool suitable for excavating motor arms, including a rear centering device for positioning the front forks of the boom, movable settings and used for making the boom The front fork positioning device for keeping the two front fork side plates of the front fork parallel, the tail axle hole positioning device for providing support to the boom front fork and for positioning the boom front fork, for the front axle assembly Front centering device for positioning and for applying downward pressing force to the front axle assembly, Front axle hole positioning device for providing support to the front axle assembly and for positioning the front axle assembly, For the lug An ear plate positioning device for positioning the board, a first fastening device for applying a pressing force to the front top plate and the first side plate, a second fastening device for applying a pressing force to the second side plate, for A third fastening device for applying a pressing force to the third side panel, a fourth fastening device for applying a pressing force to the rear top panel and the third side panel, for applying a pressing force to the rear top panel and the second side panel The fifth fastening device for force and the sixth fastening device for applying compressive force to the first side plate, the front top plate and the rear top plate are located between the boom front fork and the front axle assembly and the front top plate and the rear top plate are along the edge. The horizontal directions are arranged in sequence, the front top panel is located between the first side panel and the second side panel, and the rear top panel is located between the second side panel and the third side panel.

The rear centering device includes a rear bracket, a rear cantilever, a rear positioning shaft arranged on the rear cantilever and used to be inserted into the shaft hole of the front fork side plate of the boom front fork, and a rear positioning shaft arranged on the rear bracket and used for The rear lift actuator that controls the rear boom to lift.

The front fork positioning device includes a front fork positioning seat, a movable first sliding seat and a second sliding seat arranged on the front fork positioning seat, and a first sliding seat and a second sliding seat arranged on the front fork positioning seat and used for controlling the first sliding seat and the second sliding seat. An adjustment mechanism for lifting and lowering two sliding seats, the first sliding seat is located above the second sliding seat, and the first sliding seat is used to provide the upper fork side plate of the two front fork side plates of the boom front fork The second sliding seat is used for applying a pressing force to the lower one of the two front fork side plates of the boom front fork.

The adjusting mechanism includes a rotatable adjusting screw that is arranged on the front fork positioning seat and is threadedly connected to the first sliding seat and the second sliding seat. The adjusting screw is vertically arranged, and the front fork is A vertical guide rail for guiding the first sliding seat and the second sliding seat is arranged on the positioning seat.

The front centering device includes a front bracket, a front cantilever, a front positioning shaft arranged on the front cantilever and used to be inserted into the shaft hole of the front axle assembly, and a front bracket arranged on the front bracket and used to control the front cantilever to move up and down. Front lift actuator.

The ear plate positioning device includes an ear plate positioning seat, an ear plate positioning shaft vertically arranged on the ear plate positioning seat, a support plate arranged on the ear plate positioning seat and used to provide support for the ear plate, and a support plate sleeved on the ear plate. The support block on the plate positioning seat and between the two ear plates.

The first fastening device includes a first fastening bracket, a first push rod that is threadedly connected to the first fastening bracket and is used for contacting the first side plate, and a first upper rod disposed on the first fastening bracket. The cantilever and the first upper pressure rod vertically arranged on the first upper cantilever and used for applying a pressing force to the front top plate, the first upper pressure rod and the first upper cantilever are connected by screw threads.

The second fastening device includes a second fastening bracket and a second push rod that is threadedly connected to the second fastening bracket and is used for contacting the second side plate, and the third fastening device includes a third fastening a bracket and a third ejector rod that is threadedly connected to the third fastening bracket and is used for contacting the third side plate, the sixth fastening device includes a sixth fastening bracket and a threaded connection to the sixth fastening bracket and A sixth ram for contact with the second side plate.

The fourth tightening device includes a fourth tightening bracket, a fourth top rod that is threadedly connected to the fourth tightening bracket and used to contact the third side plate, and a second upper rod disposed on the fourth tightening bracket The cantilever and the second upper pressure rod vertically arranged on the second upper cantilever and used for applying a pressing force to the rear top plate, the second upper pressure rod and the second upper cantilever are threadedly connected.

The fifth fastening device includes a fifth fastening bracket, a fifth top rod that is threadedly connected to the fifth fastening bracket and is used for contacting the first side plate, and a third upper rod disposed on the fifth fastening bracket The cantilever and the third upper pressing rod vertically arranged on the third upper cantilever and used for applying a pressing force to the rear top plate, the third upper pressing rod and the third upper cantilever are threadedly connected.

The utility model is suitable for the lap welding tool of the excavator arm, and can accurately position and fix the various components constituting the excavator arm, and then carry out welding and assembly. Low, the skill requirements for welding workers are greatly reduced, and it is suitable for mass production.

Description of drawings

This manual includes the following drawings, which are as follows:

Fig. 1 is the structural representation of the lap welding tooling of the utility model suitable for excavator arm;

Fig. 2 is the schematic diagram of the use state of the lap welding tool of the present utility model suitable for the excavator arm;

3 is a schematic diagram of the use state of another angle of the lap welding tool suitable for the excavator arm of the present invention;

Fig. 4 is the structural representation of excavator arm;

Fig. 5 is the structural representation of rear centering device;

Fig. 6 is the structural representation of the front fork positioning device;

Fig. 7 is the structural representation of the tail shaft hole positioning device;

Fig. 8 is the structural representation of the front centering device;

Fig. 9 is the structural representation of the front axle hole positioning device;

Fig. 10 is the structural representation of the ear plate positioning device;

Figure 11 is a schematic structural diagram of the first fastening device;

Figure 12 is a schematic structural diagram of the second fastening device;

Figure 13 is a schematic structural diagram of a third fastening device;

Figure 14 is a schematic structural diagram of a fourth fastening device;

Figure 15 is a schematic structural diagram of the fifth fastening device;

Figure 16 is a schematic structural diagram of the sixth fastening device;

Figure 17 is a schematic structural diagram of a seventh fastening device;

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

Detailed ways

Below with reference to the accompanying drawings, through the description of the embodiments, the specific implementation of the present utility model will be described in further detail, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present utility model , and facilitate its implementation.

As shown in Fig. 1 to Fig. 17 , the present invention provides a lap welding tool suitable for excavator boom, comprising a base 1, a rear centering device 2 for positioning the boom front fork, a movable setting and a front fork positioning device 3 for keeping the two front fork side plates of the boom front fork parallel, a tail axle hole positioning device for providing support to the boom front fork and for positioning the boom front fork 4. The front centering device for positioning the front axle assembly and for applying a downward pressing force to the front axle assembly 5. The front centering device for supporting and positioning the front axle assembly Axle hole positioning device 6, ear plate positioning device 7 for positioning the ear plate, first fastening device 8 for applying pressing force to the front top plate and the first side plate, for applying the second side plate The second fastening device 9 for pressing force, the third fastening device 10 for applying pressing force to the third side panel, the fourth fastening device for applying pressing force to the rear top panel and the third side panel 11. The fifth fastening device 12 for applying pressing force to the rear top plate and the second side plate, the sixth fastening device 13 for applying pressing force to the first side plate, and the front fork of the boom The seventh fastening device 14 for applying pressing force to the bending plate, the front top plate and the rear top plate are located between the boom front fork and the front axle assembly, and the front top plate and the rear top plate are arranged in sequence along the horizontal direction.

Specifically, as shown in Figures 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 lugs, a first side plate, The second side panel and the third side panel are composed, the front top panel is located between the first side panel and the second side panel, the rear top panel is located between the second side panel and the third side panel, and the front bottom panel is located between the first side panel and the third side panel. Between the two side panels and the front top panel and the front bottom panel are oppositely arranged, the front bottom panel is located below the front top panel, the rear bottom panel is located between the second side panel and the third side panel, the rear top panel and the rear bottom panel are oppositely arranged, and the rear bottom panel is located at under the rear top panel. The boom 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 fork side plate is welded and the bending plate is a U-shaped structure. One end in the length direction of the first side plate is welded and connected with the front axle assembly, the other end in the length direction of the first side plate is welded and connected with one end in the length direction of the third side plate, and the length direction of the third side plate is welded and connected. The other end of the second side plate is welded and connected to one end of the bending plate of the front fork of the boom. The other end of the bent plate is welded and connected. One end in the length direction of the front top plate is welded and connected with the front axle assembly, the other end in the length direction of the front top plate is welded and connected with one end in the length direction of the rear top plate, and the other end in the length direction of the rear top plate is connected with the boom front fork One of the front fork side plates is welded and connected, the front top plate is welded and connected with the first side plate and the second side plate, and the rear top plate is welded and connected with the third side plate and the first side plate. One end in the length direction of the front bottom plate is welded and connected with the front axle assembly, the other end in the longitudinal direction of the front bottom plate is welded and connected with one end in the longitudinal direction of the rear bottom plate, and the other end in the longitudinal direction of the rear bottom plate is connected with the boom front fork. The other front fork side plate is welded and connected, 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. The lap welding tool of the utility model realizes the fixing of the boom front fork, the front axle assembly, the front top plate, the rear top plate, the front bottom plate, the rear bottom plate, the first side plate, the second side plate and the third side plate, and then the The boom front fork is welded to the second side plate, the third side plate, the rear top plate and the rear bottom plate, the front top plate is welded to the rear top plate, the first side plate and the second side plate, the front bottom plate is The side plate and the second side plate are welded, the front axle assembly is welded with the front top plate, the front bottom plate, the first side plate and the second side plate, and the ear plate and the second side plate are welded.

As shown in FIG. 1 to FIG. 3 , the base 1 is arranged horizontally, 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, and the first direction and the second direction are both horizontal directions And the first direction and the second direction are perpendicular to each other. The rear centering device 2 and the front centering device 5 are on the same 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 on the same line parallel to the first direction and the first fastening device 8, the sixth fastening device 13, the third The fastening device 10, the fourth fastening device 11 and the seventh fastening device 14 are arranged in sequence along the length direction of the base 1, and the second fastening device 9 and the fifth fastening device 12 are in another direction parallel to the first direction. On a straight line, 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 on the same line parallel to the first direction, and the tail shaft hole positioning device 4 and the front shaft hole positioning device 6 are located on the front centering device 5 and the rear centering device. between 2.

As shown in FIG. 1 to FIG. 5 , the rear centering device 2 includes a rear bracket 201 , a rear cantilever 202 , and a rear positioning device which is arranged on the rear cantilever 202 and is used to be inserted into the shaft hole of the front fork side plate of the boom front fork A shaft 203 and a rear lift actuator 204 arranged on the rear bracket 201 and used to control the rear boom 202 to lift and lower. The rear bracket 201 is vertically arranged on the base 1 , and the lower end of the rear bracket 201 is fixedly connected to the base 1 . The rear lift actuator 204 is vertically arranged on the rear bracket 201, and the rear lift actuator 204 is preferably 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 lift actuator 204 . The rear positioning shaft 203 is arranged vertically, the upper end of the rear positioning shaft 203 is fixedly connected with one end of the rear cantilever 202, and the lower end of the rear positioning shaft 203 is used to be inserted into the shaft hole on the front fork side plate of the front fork of the boom. To achieve precise positioning of the boom 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 lift actuator 204 is used to control the rear cantilever 202 to move up and down. The rear cantilever 202 drives the rear positioning shaft 203 to move synchronously. After the rear positioning shaft 203 moves downward, the rear positioning shaft 203 can be inserted into the shaft hole on the side plate of the front fork. 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 FIG. 4 and FIG. 7 , the tail shaft hole positioning device 4 includes a tail shaft positioning seat 401 and a tail positioning shaft 402 arranged on the tail shaft positioning seat 401. The tail shaft positioning seat 401 is vertically arranged on the base 1, the lower end of the tail shaft positioning seat 401 is fixedly connected with the base 1, and the tail shaft positioning seat 401 and the rear bracket 201 are on the same straight line parallel to the first direction. The tail positioning shaft 402 is vertically arranged on the tail shaft positioning seat 401, and the upper end of the tail positioning shaft 402 is used to be inserted into the shaft hole on the front fork side plate of the boom front fork, so as to realize the accurate positioning of the boom front fork. For positioning, the upper end of the tail positioning shaft 402 is a cylindrical structure. After the boom front fork is positioned, the two front fork side plates are in a horizontal state and the two front fork side plates are arranged in sequence along the vertical direction, and the lower end of the rear positioning shaft 203 is used to insert into the two front fork side plates The upper end of the tail positioning shaft 402 is used to be inserted into the shaft hole of the lower front fork side plate of the two front fork side plates, and through the rear centering device 2. In cooperation with the tail shaft hole positioning device 4, the accurate positioning of the front fork of the boom is realized, which helps to improve the product quality of the excavator boom after welding.

As shown in FIG. 1 to FIG. 4 and FIG. 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 a An adjustment mechanism on the front fork positioning seat 301 and used to control the lifting and lowering of the first sliding seat 302 and the second sliding seat 303, the first sliding seat 302 is located above the second sliding seat 303, and the first sliding seat 302 is used for moving The upper one of the two front fork side plates of the boom front fork provides support, and the second sliding seat 303 is used to support the lower one of the two front fork side plates of the boom front fork The side panels apply a compressive force. The adjusting mechanism includes a rotatable adjusting screw 304 which is rotatably arranged on the front fork positioning seat 301 and is threadedly connected with the first sliding seat 302 and the second sliding seat 303 , the adjusting screw 304 is vertically arranged, and the front fork positioning seat 301 A vertical guide rail 305 for guiding the first sliding seat 302 and the second sliding seat 303 is arranged on the upper surface. The front fork positioning seat 301 is movably arranged on the top surface of the base 1 , and a horizontal guide rail 306 for guiding the front fork positioning seat 301 is provided on the top surface of the base 1 . The length direction of the horizontal guide rail 306 corresponds to the second direction. In parallel, 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 slidably connected with the horizontal guide rail 306 . When the front fork positioning seat 301 moves, it drives the first sliding seat 302, the second sliding seat 303 and the adjusting mechanism to move synchronously, so as to facilitate the unloading before welding and the reclaiming work after the welding is completed. The front fork positioning seat 301 and the tail shaft hole positioning device 4 are on the same line parallel to the second direction, the adjusting screw 304 is vertically arranged, the axis of the adjusting screw 304 is a vertical line, and the vertical guide rail 305 is fixedly arranged On the front fork positioning seat 301 , the vertical guide rails 305 are used to guide the first sliding seat 302 and the second sliding seat 303 . The first sliding seat 302 and the second sliding seat 303 are arranged in sequence along the axis of the adjusting screw 304. The first sliding seat 302 and the second sliding seat 303 and the adjusting screw 304 constitute a screw drive. The adjusting screw 304 is threadedly connected, the other end of the first sliding seat 302 is used to be inserted between the two front fork side plates of the front fork of the boom, and one end of the second sliding seat 303 is screwed with the adjusting screw 304, The other end of the second sliding seat 303 is used to be inserted between the two front fork side plates of the front fork of the boom. 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, and the adjusting screw 304 drives the first sliding seat 302 and the second sliding seat 303 to move in the vertical direction. Move and make the first sliding seat 302 and the second sliding seat 303 move in opposite directions, the first sliding seat 302 moves upward, and the second sliding seat 303 moves downward until the first sliding seat 302 and the two front fork side plates The bottom surface of the upper front fork side plate in the middle is abutted, and the second sliding seat 303 is abutted with the top surface of the lower front fork side plate of the two front fork side plates. The upper front fork side plate is sandwiched between the first sliding seat 302 and the rear positioning shaft 203, and the lower front fork side plate of the two front fork side plates is sandwiched between the second sliding seat 303 and the tail positioning shaft 402 In between, keep the front fork side plate in a horizontal state to ensure that the parallelism of the two front fork side plates meets the requirements, which helps to improve the product quality of the welded excavator arm.

As shown in FIG. 1 to FIG. 4 and FIG. 8 , the front centering device 5 includes a front bracket 501 , a front cantilever 502 , a front positioning shaft 503 provided on the front cantilever 502 and used to be inserted into the shaft hole of the front axle assembly, and The front lift actuator 504 is disposed on the front bracket 501 and used to control the lift of the front cantilever 502 . The front bracket 501 is vertically arranged on the base 1 , and the lower end of the front bracket 501 is fixedly connected to the base 1 . The front lift actuator 504 is vertically arranged on the front bracket 501 , and the front lift actuator 504 is preferably a hydraulic cylinder. The front cantilever 502 is located above the front bracket 501 , the longitudinal direction of the front cantilever 502 is parallel to the first direction, and the front cantilever 502 is fixedly connected to the piston rod of the front lift 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 cantilever 502, and the lower end of the front positioning shaft 503 is used to be inserted into the shaft hole of the front shaft assembly from the top of the front shaft assembly downwards, using For precise positioning of the front axle assembly. 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 lift actuator 504 is used to control the front cantilever 502 to move up and down, and the front cantilever 502 drives the front positioning shaft 503 to move synchronously, so that after the front positioning shaft 503 moves downward, the front positioning shaft 503 can be inserted into the shaft hole of the front shaft assembly; After the front positioning shaft 503 is moved upward, the front positioning shaft 503 can be pulled out from the shaft hole of the front shaft assembly.

As shown in FIG. 1 to FIG. 4 and FIG. 9 , the front axle hole positioning device 6 includes a front axle positioning seat 601 and a front positioning shaft 602 arranged on the front axle positioning seat 601. The front axle positioning seat 601 is vertically arranged on the On the base 1, the 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 on the same line parallel to the first direction, and the front axle positioning seat 601 and the tail positioning shaft 402 are located on the base 1. 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, and the upper end of the front positioning shaft 602 is used to be inserted into the shaft hole of the front shaft assembly from the bottom of the front shaft assembly, so as to realize the precise positioning of the front shaft assembly , the upper end of the front positioning shaft 602 is a cylindrical structure. After the positioning of the front axle assembly is achieved, the axis of the axle hole of the front axle assembly is a vertical line. Through the cooperation of the front centering device 5 and the front axle hole positioning device 6, the accurate positioning of the front axle assembly is realized, which is helpful to improve the product quality of the excavator arm after welding.

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 arranged on the ear plate positioning seat 701 , an ear plate positioning shaft 702 arranged on the ear plate positioning seat 701 and A support plate 703 for supporting the ear plate and a support block 704 sleeved on the ear plate positioning seat 701 and located between the 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 support plate 703 is fixedly arranged on the upper end of the lug plate positioning seat 701, the support plate 703 is set horizontally, the lug plate positioning seat 701 is used to be inserted into the shaft holes of the two lug plates, and the support plate 703 is located in the two lug plates. The lower ear plate provides support, and the support block 704 provides support for the upper ear plate among the two ear plates, so that the two ear plates are positioned in a horizontal state, and the two ear plates are in contact with the outer wall of the second side plate. . The inside of the ear plate positioning seat 701 has a mounting hole for inserting the ear plate positioning shaft 702. When positioning the two ear plates, the ear plate positioning shaft 702 is downwardly passed through the shaft hole of one ear plate and the support block 704 in turn. The center hole of the ear plate and the shaft hole of the other ear plate are inserted into the installation hole of the ear plate positioning shaft 702, and the support block 704 is sandwiched between the two ear plates to achieve accurate positioning of the two ear plates.

As shown in FIG. 1 to FIG. 4 , a plurality of lower backing plates 15 are arranged on the top surface of the base 1. During the welding operation, the lower backing plates 15 are used for the front bottom plate, the rear bottom plate, the first side plate and the second side plate. , the third side plate and the boom front fork provide support, so that the bottom surface of the lower front fork side plate of the two front fork side plates is abutted with the top surface of a lower backing plate 15, so that the bottom surface of the first side plate , The bottom surface of the second side plate and the bottom surface of the third side plate are respectively attached to the top surfaces of the plurality of lower backing 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 bottom pads 15 .

As shown in FIGS. 1 to 4 and 11 , the first fastening device 8 is used to apply a pressing force to the first side plate, so that the first side plate and the front top plate and the front bottom plate are kept in a fit state, so as to improve the adhesion of the first side plate. The reliability and accuracy of the positioning and fixing of the side plate, the direction of the pressing force applied by the first fastening device 8 to the first side plate is parallel to the second direction. The first fastening device 8 includes a first fastening bracket 801 , a first push rod 802 that is threadedly connected to the first fastening bracket 801 and used to contact the first side plate, and a The first upper cantilever 803 and the first upper pressure rod 804 vertically arranged on the first upper cantilever 803 and used to apply a pressing force to the front top plate are connected by screw threads. 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 to the top surface of the base 1 . A plurality of first push rods 802 are arranged on the first fastening bracket 801 along the vertical direction, the length direction of the first push rod 802 is parallel to the second direction, and the first push rod 802 and the first fastening bracket 801 are threaded Connection, correspondingly, there is a threaded hole on the first fastening bracket 801 for the first top rod 802 to pass through, and by rotating the first top rod 802, the first top rod 802 is moved away from the first side plate or close to the horizontal direction. The position of the first side plate is moved until the first push rod 802 is separated from or in contact with the outer surface of the first side plate. After the first side plate is fixed, the end surface of the first top rod 802 contacts with the outer side surface of the first side plate, so that the first side plate abuts on the front top plate and the front bottom plate. The first fastening device 8 is used to exert a downward pressing force on the front top plate. The first upper cantilever 803 is rotatably arranged on the top of the first fastening bracket 801, and one end of the first upper cantilever 803 is connected to the The first fastening bracket 801 is connected, the first upper pressing rod 804 is arranged on 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 first upper pressing The axis of the rod 804 is parallel to the longitudinal direction of the first fastening bracket 801 . The first upper pressure rod 804 and the first upper cantilever 803 are threadedly connected, and correspondingly, the first upper cantilever 803 is provided with a threaded hole through which the first upper pressure rod 804 passes. By rotating the first upper pressure rod 804, the first upper pressure rod 804 can be moved in the vertical direction to a position away from or close to the front top plate until the lower end face of the first upper pressure rod 804 is separated from the top surface of the front top plate Or touch, press the front top plate vertically or loosen the front top plate.

In this embodiment, as shown in FIG. 11 , there are two first top rods 802 on the first fastening bracket 801 , and the two first top rods 802 are separated by a certain distance, so that the two first top rods 802 are The rod 802 can contact the first side plate at the upper and lower positions of the first side plate respectively, so as to ensure that the first side plate is firmly fixed and the force is uniform.

As shown in Fig. 1 to Fig. 4 and Fig. 12 , the second fastening device 9 is used to apply a pressing force to the second side panel, so that the second side panel is kept in contact with the front top panel, the front bottom panel, the rear top panel and the rear bottom panel. In this state, the reliability and accuracy of positioning and fixing the second side plate are improved, and the direction of the pressing force applied by the second fastening device 9 to the second side plate is parallel to the second direction. The second fastening device 9 includes a second fastening bracket 901 and a second push rod 902 that is threadedly connected to the second fastening bracket 901 and is used for contacting the second side plate. The second fastening bracket 901 is vertically arranged On the base 1 , the lower end of the second fastening bracket 901 is fixedly connected with the top surface of the base 1 . A plurality of second top rods 902 are arranged on the second fastening bracket 901 along the vertical direction, the length direction of the second top rod 902 is parallel to the second direction, and the second top rod 902 and the second fastening bracket 901 are threaded Connection, correspondingly, there is a threaded hole on the second fastening bracket 901 for the second top rod 902 to pass through. The position of the second side plate is moved until the second push rod 902 is separated from or in contact with the outer surface of the second side plate. After the second side panel is fixed, the end surface of the second top rod 902 contacts the outer side surface of the second side panel, so that the second side panel abuts on the front top panel, the front bottom panel, the rear top panel and the rear bottom panel.

In this embodiment, as shown in FIG. 12 , there are two second top rods 902 on the second fastening bracket 901 in total, and the two second top rods 902 are separated by a certain distance, so that the two second top rods 902 are The rods 902 can respectively contact the second side plate at the upper and lower positions of the second side plate, so as to ensure that the second side plate is firmly fixed and the force is evenly applied. A total of two second fastening brackets 901 are provided, and the two second fastening brackets 901 are located on the same straight line parallel to the first direction.

As shown in Figures 1 to 4 and Figure 13, the third fastening device 10 is used to apply a pressing force to the third side plate, so that the third side plate and the rear top plate and the rear bottom plate are kept in a fit state, and the third The reliability and accuracy of the positioning and fixing of the side panel, the direction of the pressing force applied by the third fastening device 10 to the third side panel is parallel to the second direction. The third fastening device 10 includes a third fastening bracket 1001 and a third push rod 1002 that is threadedly connected to the third fastening bracket 1001 and is used for contacting the third side plate, and the third fastening bracket 1001 is vertically arranged On the base 1 , the lower end of the third fastening bracket 1001 is fixedly connected to the top surface of the base 1 . A plurality of third ejector rods 1002 are arranged on the third fastening bracket 1001 along the vertical direction, the length direction of the third ejector pins 1002 is parallel to the second direction, and the third ejector pins 1002 and the third fastening bracket 1001 are threaded Connection, correspondingly, there is a threaded hole on the third fastening bracket 1001 for the third ejector pin 1002 to pass through, and by rotating the third ejector pin 1002, the third ejector pin 1002 is moved away from the third side plate or close to the horizontal direction. The position of the third side plate is moved until the third push rod 1002 is separated from or in contact with the outer surface of the third side plate. After the third side plate is fixed, the end surface of the third top rod 1002 contacts the outer surface of the third side plate, so that the third side plate abuts on the rear top plate and the rear bottom plate.

In this embodiment, as shown in FIG. 13 , there are two third top rods 1002 on the third fastening bracket 1001 in total, and the two third top rods 1002 are separated by a certain distance, so that the two third top rods 1002 are separated by a certain distance. The rod 1002 can be in contact with the third side plate at the upper and lower positions of the third side plate respectively, so as to ensure that the third side plate is firmly fixed and the force is evenly applied.

As shown in Figures 1 to 4 and Figure 14, the fourth fastening device 11 is used to apply a pressing force to the third side plate, so that the fifth side plate and the rear top plate and the rear bottom plate are kept in a fit state, and the third side plate is improved. The reliability and accuracy of the positioning and fixing of the side plate, the direction of the pressing force applied by the fourth fastening device 11 to the third side plate is parallel to the second direction. The fourth fastening device 11 includes a fourth fastening bracket 1101 , a fourth mandrel 1102 that is threadedly connected to the fourth fastening bracket 1101 and used to contact the third side plate, and a fourth fastening bracket 1101 . The second upper cantilever arm 1103 and the second upper pressure rod 1104 vertically disposed on the second upper cantilever arm 1103 and used to apply a pressing force to the rear top plate, the second upper pressure rod 1104 and the second upper cantilever arm 1103 are threadedly connected. The fourth fastening bracket 1101 is vertically disposed on the base 1 , and the lower end of the fourth fastening bracket 1101 is fixedly connected to the top surface of the base 1 . A plurality of fourth ejector rods 1102 are arranged on the fourth fastening bracket 1101 along the vertical direction, the length direction of the fourth ejector pin 1102 is parallel to the second direction, and the fourth ejector pin 1102 and the fourth fastening bracket 1101 are threaded For connection, the fourth fastening bracket 1101 is correspondingly provided with a threaded hole for the fourth ejector rod 1102 to pass through. By rotating the fourth ejector pin 1102, the fourth ejector pin 1102 is moved away from the third side plate or close to the horizontal direction. The position of the third side plate is moved until the fourth push rod 1102 is separated from or in contact with the outer surface of the third side plate. After the third side plate is fixed, the end surface of the fourth top rod 1102 is in contact with the outer side surface of the third side plate, so that the third side plate abuts on the rear top plate and the rear bottom plate. The fourth fastening device 11 is used to exert a downward pressing force on the rear top plate, the second upper cantilever 1103 is rotatably arranged on the top of the fourth fastening bracket 1101, and one end of the second upper cantilever 1103 is connected to the The fourth fastening bracket 1101 is connected, the second upper pressing rod 1104 is arranged on the other end of the second upper cantilever 1103, the length direction of the second upper cantilever 1103 is perpendicular to the length direction of the fourth fastening bracket 1101, and the second upper pressing rod 1104 is The axis of the rod 1104 is parallel to the longitudinal direction of the fourth fastening bracket 1101 . The second upper pressure rod 1104 and the second upper cantilever arm 1103 are threadedly connected, and correspondingly, the second upper cantilever arm 1103 is provided with a threaded hole through which the second upper pressure rod 1104 passes. By rotating the second upper pressure rod 1104, the second upper pressure rod 1104 can be moved in the vertical direction to a position away from or close to the rear top plate, until the lower end face of the second upper pressure rod 1104 is separated from the top surface of the rear top plate Or touch, press the rear top plate vertically or loosen the rear top plate.

In this embodiment, as shown in FIG. 14 , there are two fourth top rods 1102 on the fourth fastening bracket 1101 in total, and there is a certain distance between the two fourth top rods 1102 , so that the two fourth top rods 1102 are separated by a certain distance. The rod 1102 can be in contact with the third side plate at the upper and lower positions of the third side plate respectively, so as to ensure that the third side plate is firmly fixed and the force is uniform. The third fastening device 10 is used to apply a pressing force to the third side plate at the end of the third side plate that is connected to the first side plate, and the fourth fastening device 11 is used to connect the third side plate with the first side plate. The connecting end of the bending plates of the boom front fork exerts a pressing force on the third side plate.

As shown in FIGS. 1 to 4 and 15 , the fifth fastening device 12 is used to apply a pressing force to the second side plate, so that the fifth side plate and the rear top plate and the rear bottom plate are kept in a fit state, and the second side plate is improved. The reliability and accuracy of the positioning and fixing of the side panel, the direction of the pressing force applied by the fifth fastening device 12 to the second side panel is parallel to the second direction. The fifth fastening device 12 includes a fifth fastening bracket 1201 , a fifth top rod 1202 that is threadedly connected to the fifth fastening bracket 1201 and is used for contacting the second side plate, and a fifth fastening bracket 1201 . The third upper cantilever 1203 and the third upper pressing rod 1204 vertically arranged on the third upper cantilever 1203 and used to apply a pressing force to the rear top plate, the third upper pressing rod 1204 and the third upper cantilever 1203 are threadedly connected. The fifth fastening bracket 1201 is vertically disposed on the base 1 , and the lower end of the fifth fastening bracket 1201 is fixedly connected to the top surface of the base 1 . A plurality of fifth top rods 1202 are arranged on the fifth fastening bracket 1201 along the vertical direction, the length direction of the fifth top rod 1202 is parallel to the second direction, and the fifth top rod 1202 and the fifth fastening bracket 1201 are threaded For connection, the fifth fastening bracket 1201 is correspondingly provided with a threaded hole for the fifth ejector rod 1202 to pass through. By rotating the fifth ejector rod 1202, the fifth ejector rod 1202 is moved away from the second side plate or close to the horizontal direction. The position of the second side plate is moved until the fifth push rod 1202 is separated from or in contact with the outer surface of the second side plate. After the second side plate is fixed, the end surface of the fifth top rod 1202 is in contact with the outer side surface of the second side plate, so that the second side plate abuts on the rear top plate and the rear bottom plate. The fifth fastening device 12 is used to exert a downward pressing force on the rear top plate. The third upper cantilever 1203 is rotatably arranged on the top of the fifth fastening bracket 1201. One end of the third upper cantilever 1203 is connected to the The fifth fastening bracket 1201 is connected, the third upper pressing rod 1204 is arranged at the other end of the third upper cantilever 1203, the length direction of the third upper cantilever 1203 is perpendicular to the length direction of the fifth fastening bracket 1201, and the third upper pressing rod 1204 is The axis of the rod 1204 is parallel to the length direction of the fifth fastening bracket 1201 . The third upper pressing rod 1204 and the third upper cantilever arm 1203 are threadedly connected, and correspondingly, the third upper cantilever arm 1203 is provided with a threaded hole through which the third upper pressing rod 1204 passes. By rotating the third upper pressing rod 1204, the third upper pressing rod 1204 can be moved in the vertical direction to a position away from or close to the rear top plate, until the lower end face of the third upper pressing rod 1204 is separated from the top surface of the rear top plate Or touch, press the rear top plate vertically or loosen the rear top plate.

In this embodiment, as shown in FIG. 15 , there are two fifth top rods 1202 on the fifth fastening bracket 1201 in total, and the two fifth top rods 1202 are separated by a certain distance, so that the two fifth top rods 1202 are separated by a certain distance. The rod 1202 can contact the second side plate at the upper and lower positions of the second side plate respectively, so as to ensure that the second side plate is firmly fixed and the force is evenly applied. The fifth fastening device 12 is used to apply a pressing force to the second side plate at the end of the second side plate that is connected with the bending plate of the front fork of the boom. The fifth fastening device 12 and the fourth fastening device 11 is a relative arrangement.

As shown in Figures 1 to 4 and Figure 16, the sixth fastening device 13 is used to apply a pressing force to the first side plate, so that the first side plate and the front top plate and the front bottom plate are kept in a fit state, so as to improve the The reliability and accuracy of the positioning and fixing of the side panel, the direction of the pressing force applied by the sixth fastening device 13 to the first side panel is parallel to the second direction. The sixth fastening device 13 includes a sixth fastening bracket 1301 and a sixth top rod 1302 that is threadedly connected to the sixth fastening bracket 1301 and is used for contacting the first side plate, and the sixth fastening bracket 1301 is vertically arranged On the base 1 , the lower end of the sixth fastening bracket 1301 is fixedly connected to the top surface of the base 1 . A plurality of sixth ejector rods 1302 are arranged on the sixth fastening bracket 1301 along the vertical direction, the length direction of the sixth ejector pin 1302 is parallel to the second direction, and the sixth ejector pin 1302 and the sixth fastening bracket 1301 are threaded The sixth fastening bracket 1301 is correspondingly provided with a threaded hole through which the sixth ejector rod 1302 passes. By rotating the sixth ejector pin 1302, the sixth ejector pin 1302 is moved away from the first side plate or close to the horizontal direction. The position of the first side plate is moved until the sixth push rod 1302 is separated from or in contact with the outer surface of the first side plate. After the first side plate is fixed, the end surface of the sixth top rod 1302 contacts the outer side surface of the first side plate, so that the first side plate abuts on the front top plate and the front bottom plate.

In this embodiment, as shown in FIG. 16 , there are two sixth ejector rods 1302 on the sixth fastening bracket 1301 in total, and the two sixth ejector rods 1302 are separated by a certain distance, so that the two sixth ejector rods 1302 are separated by a certain distance. The rod 1302 can contact the first side plate at the upper and lower positions of the first side plate respectively, so as to ensure that the first side plate is firmly fixed and the force is evenly applied. The sixth fastening device 13 is used to apply a pressing force to the first side plate at the end of the first side plate that is connected to the third side plate, and the first fastening device 8 is used to connect the first side plate with the third side plate. The connected end of the front axle assembly exerts a pressing force on the first side plate.

As shown in Figures 1 to 4 and Figure 17, the seventh fastening device 14 is used to apply a pressing force to the bending plate to keep the bending plate and the third side plate in an aligned state, so as to improve the positioning and fixing of the front fork of the boom. To ensure reliability and accuracy, the direction of the pressing force applied by the seventh fastening device 14 to the bending plate is parallel to the second direction. The seventh fastening device 14 includes a seventh fastening bracket 1401 and a seventh mandrel 1402 which is threadedly connected to the seventh fastening bracket 1401 and is used for contacting the bending plate. The seventh fastening bracket 1401 is vertically arranged on the On the base 1 , the lower end of the seventh fastening bracket 1401 is fixedly connected to the top surface of the base 1 . A plurality of seventh mandrels 1402 are arranged on the seventh fastening bracket 1401 along the vertical direction, the length direction of the seventh mandrel 1402 is parallel to the second direction, and the seventh mandrel 1402 and the seventh fastening bracket 1401 are threaded The seventh fastening bracket 1401 is correspondingly provided with a threaded hole for the seventh ejector pin 1402 to pass through. By rotating the seventh ejector pin 1402, the seventh ejector pin 1402 is moved horizontally away from the bending plate or close to the bending plate. The position of the bent plate is moved until the seventh ejector pin 1402 is separated from or in contact with the outer side of the bent plate.

In this embodiment, as shown in FIG. 17 , there are two seventh top rods 1402 on the seventh fastening bracket 1401 in total, and the two seventh top rods 1402 are separated by a certain distance, so that the two seventh top rods 1402 are The rods 1402 can be in contact with the bending plate at the upper and lower positions of the bending plate respectively, so as to ensure that the bending plate is firmly fixed and the force is uniform. The seventh fastening device 14 is used to apply a pressing force to the bending plate at the end of the bending plate connected to the third side plate.

The present invention has been exemplarily described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above manner. As long as the method concept and technical solution of the present invention are adopted for various non-substantial improvements; or without improvement, the above-mentioned concept and technical solution of the present invention are directly applied to other occasions, all of which are included in the present invention. within the scope of protection.

Claims (10)

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.

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