A hydraulic loader s-arm welding fixture and method of use

Abstract

The application provides a hydraulic loader S-arm welding tool and a use method, and the tool comprises two side plate placing frames, a shaft sleeve placing frame and two positioning hydraulic systems, the shaft sleeve placing frame comprises a shaft sleeve placing table and a slide, the shaft sleeve placing table is provided with a placing groove, the placing groove is an arc-shaped groove matched with the shape of the side wall of the rotating shaft sleeve, the slide is located above the shaft sleeve placing table, one end of the slide is located on one side of the placing groove, and the slide is arranged in an inclined mode; the two side plate placing frames are symmetrically arranged on the two sides of the shaft sleeve placing table, and the top of each side plate placing frame is used for placing an S-arm side plate; the two positioning hydraulic systems are located on the sides of the two side plate placing frames away from the shaft sleeve placing table, and each positioning hydraulic system comprises two positioning oil cylinders and one pushing oil cylinder. The application can ensure the position accuracy during the welding of the rotating shaft sleeve and the S-arm side plate, ensure that the welded S-arm meets the requirements, improve the efficiency of the S-arm welding and molding, and reduce the processing cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machining, in particular to a hydraulic loader S-arm welding tool and a using method thereof. BACKGROUND

[0002] The loader is a kind of engineering machinery, including a working device mainly composed of a bucket, an H-arm and an S-arm, as shown in the drawing. Figure 7 The function of the working device is mainly to shovel loose materials such as soil, sand, lime and coal, and can also perform light digging operation on ores and hard soil.

[0003] The S-arm is connected with the H-arm of the working device of the loader through an S-arm support, and the S-arm support is welded on the crossbeam of the H-arm. The S-arm can rotate around the core shaft of the S-arm support during the working process. The S-arm is a welded part composed of two S-arm side plates and a rotating shaft sleeve, and the rotating shaft sleeve is the part around which the S-arm rotates. Figure 6 and Figure 8 As shown in the drawings, the S-arm side plate is provided with a cylinder shaft hole, a rotating hole and a connecting rod shaft hole. The cylinder shaft hole and the connecting rod shaft hole are respectively located at the two ends of the S-arm side plate, and are respectively used for connecting with the cylinder for driving the S-arm to overturn and the connecting rod for driving the bucket to overturn. The rotating hole is coaxial with the rotating shaft sleeve and is used for connecting with the core shaft of the S-arm support. In order to ensure that the S-arm can be normally used for loading work, the positions of the two S-arm side plates, the positions of the holes on the two S-arm side plates which play the same role and the welding position of the rotating shaft sleeve should be corresponding after welding. In order to ensure that the welded S-arm meets the technical requirements and improve the welding efficiency, a hydraulic loader S-arm welding tool and a using method thereof are needed. SUMMARY

[0004] To solve the problems in the background art, the present application provides a hydraulic loader S-arm welding tool, which comprises a side plate placing frame, a shaft sleeve placing frame and a positioning hydraulic system. The shaft sleeve placing frame comprises a shaft sleeve placing table and a sliding way for placing the rotating shaft sleeve. The shaft sleeve placing table is provided with a placing groove for placing the rotating shaft sleeve. The placing groove is an arc-shaped groove matched with the shape of the side wall of the rotating shaft sleeve. The axial dimension of the placing groove is smaller than that of the rotating shaft sleeve. The sliding way is located above the shaft sleeve placing table. One end of the sliding way is located on one side of the placing groove, and the position of the other end of the sliding way is higher than that of the end of the sliding way close to the placing groove.

[0005] The side plate placing frame has two, and the two side plate placing frames are respectively located on the two sides of the shaft sleeve placing table and are symmetrically distributed. The top of the side plate placing frame is used for placing the S-arm side plate.

[0006] The positioning hydraulic system has two, and the two positioning hydraulic systems are located on the sides of the two side plate placing racks away from the shaft sleeve placing table, and the positioning hydraulic system comprises two positioning oil cylinders and a pushing oil cylinder for pushing the S-arm side plate.

[0007] After the S-arm side plate is placed on the side plate placing rack, the extension rods of the two positioning oil cylinders are coaxial with the oil cylinder shaft holes and the connecting rod shaft holes on the S-arm side plate, and the placing groove is coaxial with the rotating hole on the S-arm side plate.

[0008] Preferably, the top of the side plate placing rack is provided with a containing groove matched with the shape of the bottom of the S-arm side plate.

[0009] Preferably, one end of the slide close to the placing groove is provided with a sending and stopping mechanism for controlling the falling / stopping of the rotating shaft sleeve on the slide.

[0010] Preferably, the sending and stopping mechanism comprises a first sending and stopping plate, a second sending and stopping plate and a gear, the slide is fixed with a mounting plate above, the gear is rotatably arranged on the mounting plate through a rotating shaft, the first sending and stopping plate is located on the side of the gear close to the shaft sleeve placing table, the second sending and stopping plate is located on the side of the gear away from the shaft sleeve placing table, the side of the first sending and stopping plate and the second sending and stopping plate close to the gear is provided with a rack engaged with the gear, one end of the first sending and stopping plate and the second sending and stopping plate is slidably connected with the mounting plate, the distance between the first sending and stopping plate and the second sending and stopping plate is not less than the diameter of the rotating shaft sleeve and less than 1.5 times of the diameter of the rotating shaft sleeve, and the gear is driven to rotate by a driving mechanism.

[0011] Preferably, the driving mechanism comprises a sending and stopping oil cylinder and a connecting rod, the sending and stopping oil cylinder is fixedly connected with the mounting plate, the output end of the sending and stopping oil cylinder is hingedly connected with one end of the connecting rod, and the other end of the connecting rod is connected with the rotating shaft.

[0012] Preferably, the slide is provided with a baffle on both sides.

[0013] Preferably, the output end of the pushing oil cylinder is connected with a pushing plate, and the pushing plate corresponds to the position of the S-arm side plate.

[0014] A use method of the hydraulic loader S-arm welding tool, comprising the following steps:

[0015] S1, a plurality of S-arm side plates are placed on the two side plate placing racks, and a plurality of rotating shaft sleeves are placed on the slide in the length direction, in the initial state, the bottom of the first sending and stopping plate is close to the slide, the bottom of the second sending and stopping plate is away from the slide, the plurality of rotating shaft sleeves on the slide are located on the side of the first sending and stopping plate away from the shaft sleeve placing table, and the first sending and stopping plate limits the rotating shaft sleeves on the slide;

[0016] S2, start the driving mechanism, the driving mechanism drives the gear to rotate, the gear drives two sending stop plates to move through the rack, the first sending stop plate is lifted, a rotating shaft sleeve close to the shaft sleeve placement table on the slide loses the limitation, rolls into the placement groove, at the same time, the second sending stop plate moves down, the second sending stop plate limits the remaining rotating shaft sleeve on the slide;

[0017] S3, start the positioning oil cylinder, two positioning oil cylinders on each side respectively extend the telescopic rod to the oil cylinder shaft hole of the S arm side plate and the connecting rod shaft hole, and then start the pushing oil cylinder, two pushing oil cylinders respectively push the two S arm side plates to be pressed on the two sides of the rotating shaft sleeve;

[0018] S4, start the welding robot to weld the two S arm side plates and the rotating shaft sleeve into one, forming the S arm of the loader.

[0019] Preferably, step S3 comprises: the first sending stop plate is lifted, the second sending stop plate moves down, after a rotating shaft sleeve close to the shaft sleeve placement table on the slide rolls into the placement groove, the driving mechanism drives the gear to reverse, the gear drives the second sending stop plate to lift, and the first sending stop plate moves down, so that the next rotating shaft sleeve is located between the first sending stop plate and the second sending stop plate.

[0020] The present application has the beneficial effects that:

[0021] The present application limits the position of the S arm side plate through the symmetrically arranged positioning oil cylinder and the telescopic rod of each positioning oil cylinder being coaxial with the oil cylinder shaft hole of the S arm side plate and the connecting rod shaft hole of the S arm side plate, ensures the accurate position of the two S arm side plates of the S arm, at the same time, the placement groove can position the rotating shaft sleeve located therein, ensures the accurate position of the rotating shaft sleeve, and further ensures that the S arm formed by welding meets the requirements.

[0022] The present application can pre-place multiple S arm side plates and multiple rotating shaft sleeves, without frequent feeding. The pushing oil cylinder of the present application moves the two S arm side plates to the processing position, and also makes the S arm side plate and the rotating shaft sleeve close, fixes the position of the S arm side plate, facilitates welding, and through the inclined slide pre-placing the rotating shaft sleeve, the rotating shaft sleeve can enter the placement groove through the gravitational potential, without setting a driving mechanism, saving the cost, and the sending and stopping mechanism can make the rotating shaft sleeve enter the placement groove one by one, ensuring the orderliness of the rolling of the rotating shaft sleeve. The present application cooperates with the welding robot, improves the efficiency of the S arm welding formation, and reduces the processing cost. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the overall structure diagram of the present application Figure 1 ;

[0024] Figure 2 It is the overall structure diagram of the present application Figure 2 ;

[0025] Figure 3 For Figure 1 Structure enlarged view at A in the figure;

[0026] Figure 4 For the overall structure of the invention is a top view;

[0027] Figure 5 For the invention is a side plate rack and shaft sleeve rack structure schematic diagram;

[0028] Figure 6 For the S arm side plate structure schematic diagram;

[0029] Figure 7 For the loader working device structure schematic diagram;

[0030] Figure 8 For the loader S arm structure schematic diagram.

[0031] Figure label: 1, side plate rack; 2, slide; 3, S arm side plate; 31, oil cylinder shaft hole; 32, rotating hole; 33, connecting rod shaft hole; 4, rotating shaft sleeve; 5, positioning oil cylinder; 6, push oil cylinder; 7, gear; 8, rack; 9, second stop plate; 10, first stop plate; 11, stop oil cylinder; 12, linkage rod; 13, mounting plate; 14, baffle; 15, shaft sleeve placement platform; 16, placement groove; 17, push plate. DETAILED DESCRIPTION

[0032] In order to make the invention more clear, the following combining with the drawings and examples, the technical scheme of the invention is further explained, should be aware that the given example is only one of the implementation ways, and does not represent all examples.

[0033] In this paper, the terms such as 'inside, outside, top, bottom' are established based on the position relationship shown in the drawings, according to the different drawings, the corresponding position relationship may also change accordingly, therefore, it can not be understood as the absolute limit of the protection scope.

[0034] Combined with the Figure 1 -attached Figure 6The utility model provides a kind of hydraulic loader S arm welding tool, including side plate rack 1, shaft sleeve placement rack and positioning hydraulic system, the shaft sleeve placement rack includes shaft sleeve placement table 15 and the slide 2 for placing rotating shaft sleeve 4, the shaft sleeve placement table 15 is equipped with the placement slot 16 for placing rotating shaft sleeve 4, the placement slot 16 is the arc slot matched with the shape of rotating shaft sleeve 4 side wall, ensure that rotating shaft sleeve 4 falls into placement slot 16, rotating shaft sleeve 4 and placement slot 16 fit, to ensure the stability of rotating shaft sleeve 4 in placement slot 16;The axial dimension of the placement slot 16 is less than the axial dimension of rotating shaft sleeve 4, to reserve welding workspace for welding robot, avoid that shaft sleeve placement table 15 hinders welding action;The slide 2 is located above shaft sleeve placement table 15, one end of slide 2 is located at one side of placement slot 16, the position of the other end of slide 2 is higher than the position of the end of slide 2 close to placement slot 16, so that slide 2 is inclined to set, rotating shaft sleeve 4 on slide 2 can fall along slide 2 under the action of gravitational potential energy.

[0035] The side plate rack 1 has two, and the two side plate racks 1 are respectively located on the two sides of the shaft sleeve placement table 15 and are symmetrically distributed, and the top of the side plate rack 1 is used for placing the S arm side plate 3.

[0036] The positioning hydraulic system has two, and the two positioning hydraulic systems are respectively located on the side of the two side plate racks 1 away from the shaft sleeve placement table 15, and the positioning hydraulic system includes two positioning oil cylinders 5 and one pushing oil cylinder 6 used for pushing the S arm side plate 3.

[0037] Specifically, one end of the slide 2 close to the placement slot 16 is provided with a sending and stopping mechanism for controlling the falling / stop of the rotating shaft sleeve 4 on the slide 2. The sending and stopping mechanism includes a first sending plate 10, a second sending plate 9 and a gear 7, the slide 2 is provided with a mounting plate 13 above, the gear 7 is rotatably arranged on the mounting plate 13 through a shaft, specifically, the shaft is rotatably connected with the mounting plate 13, and the gear 7 is coaxially and fixedly connected with the shaft; the first sending plate 10 is located on the side of the gear 7 close to the shaft sleeve placement table 15, the second sending plate 9 is located on the side of the gear 7 away from the shaft sleeve placement table 15, and the side of the first sending plate 10 and the second sending plate 9 close to the gear 7 is provided with a rack 8 engaged with the gear 7, and one end of the first sending plate 10 and the second sending plate 9 is slidably connected with the mounting plate 13.

[0038] The distance between the first stop plate 10 and the second stop plate 9 is not less than the diameter of the rotating shaft sleeve 4 and less than 1.5 times of the diameter of the rotating shaft sleeve 4, the size of the first stop plate 10 and the second stop plate 9 is determined according to the moving stroke, which ensures that when the first stop plate 10 or the second stop plate 9 moves upward, the other stop plate just moves downward to one side of the rotating shaft sleeve 4 on the slide 2, and when the bottom of the first stop plate 10 or the second stop plate 9 contacts with the slide 2, the bottom of the other stop plate is above the rotating shaft sleeve 4 on the slide 2, so that the stop mechanism ensures that there is only one rotating shaft sleeve 4 falling into the placing groove 16 each time; the gear 7 is driven to rotate by the driving mechanism.

[0039] Specifically, the driving mechanism includes a stop oil cylinder 11 and a connecting rod 12, the stop oil cylinder 11 is fixedly connected with the mounting plate 13, the output end of the stop oil cylinder 11 is hingedly connected with one end of the connecting rod 12, and the other end of the connecting rod 12 is connected with the rotating shaft. When the output end of the stop oil cylinder 11 extends or retracts, the rotating shaft is driven to rotate through the connecting rod 12, and the rotating shaft drives the gear 7 to rotate.

[0040] Specifically, the slide 2 is provided with a baffle 14 on both sides, the baffle 14 prevents the rotating shaft sleeve 4 from separating from the slide 2 on one side, limits the sliding path of the rotating shaft sleeve 4, and ensures that the rotating shaft sleeve 4 accurately rolls into the placing groove 16. More specifically, the distance between the baffles 14 on both sides of the slide 2 is slightly greater than the axial size of the rotating shaft sleeve 4, that is, it is ensured that the two baffles 14 do not clamp the rotating shaft sleeve 4 and the rotating shaft sleeve 4 can roll along the slide 2, and at the same time, it is avoided that the distance between the baffles 14 is too large, so that the rotating shaft sleeve 4 tilts when rolling along the slide 2, affecting the accuracy of the rolling position of the rotating shaft sleeve 4.

[0041] When the S-arm side plate 3 is placed on the both-side side plate placing frame 1, one end of the slide 2 close to the placing groove 16 is located between the two S-arm side plates 3, the width of the slide 2 needs to be equal to or greater than the axial size of the rotating shaft sleeve 4 to ensure that the rotating shaft sleeve 4 can roll along the slide 2, and the distance between the two baffles 14 on the opposite sides is greater than the axial size of the rotating shaft sleeve 4, so that the part of the slide 2 between the S-arm side plates 3 hinders the movement of the S-arm side plates 3, that is, the S-arm side plates 3 are hindered by the slide 2 and the baffles 14 and cannot contact with the rotating shaft sleeve 4 in the placing groove 16, affecting the welding. To solve the above problem, the baffle 14 is arranged on the part of the slide 2 which is not located between the S-arm side plates 3, and the width of the part of the slide 2 between the S-arm side plates 3 is equal to the axial size of the rotating shaft sleeve 4 or consistent with the axial size of the placing groove 16. When not welding, the distance between the two S-arm side plates 3 close to the placing groove 16 on the both-side side plate placing frame 1 is the same as the distance between the two baffles 14, or greater than the distance between the two baffles 14 and less than the distance between the two baffles 14 on the opposite sides, and the part of the slide 2 without the baffle 14 limits the rotating shaft sleeve 4 through the two S-arm side plates 3.

[0042] Specifically, the push oil cylinder 6 output end is connected with a push plate 17, and the push plate 17 corresponds to the position of the S-arm side plate 3. The contact area with the S-arm side plate 3 is increased through the push plate 17, and the stability of pushing is improved.

[0043] A method for using a hydraulic loader S-arm welding tool, comprising the following steps:

[0044] S1, a plurality of S-arm side plates 3 are placed on the two side plate placing frames 1, and a plurality of rotating shaft sleeves 4 are placed on the slide 2 in the length direction. In the initial state, the bottom of the first stop plate 10 is close to the slide 2, the bottom of the second stop plate 9 is away from the slide 2, the plurality of rotating shaft sleeves 4 on the slide 2 are located on the side of the first stop plate 10 away from the shaft sleeve placing table 15, and the first stop plate 10 limits the rotating shaft sleeves 4 on the slide 2;

[0045] S2, the driving mechanism is started, the driving mechanism drives the gear 7 to rotate, the gear 7 drives the two stop plates to move through the rack 8, the first stop plate 10 is lifted, one rotating shaft sleeve 4 on the slide 2 close to the shaft sleeve placing table 15 loses the limitation and rolls into the placing groove 16, at the same time, the second stop plate 9 moves down, and the second stop plate 9 limits the remaining rotating shaft sleeves 4 on the slide 2;

[0046] S3, the positioning oil cylinder 5 is started, the two positioning oil cylinders 5 on each side respectively extend the telescopic rods into the oil cylinder shaft hole 31 and the connecting rod shaft hole 33 of the S-arm side plate 3, then the push oil cylinder 6 is started, and the two push oil cylinders 6 respectively push the two S-arm side plates 3 to be pressed and clamped on the two sides of the rotating shaft sleeve 4;

[0047] After the first stop plate 10 is lifted and the second stop plate 9 moves down, one rotating shaft sleeve 4 on the slide 2 close to the shaft sleeve placing table 15 rolls into the placing groove 16, the driving mechanism drives the gear 7 to reverse, the gear 7 drives the second stop plate 9 to lift, and the first stop plate 10 moves down, so that the next rotating shaft sleeve 4 is located between the first stop plate 10 and the second stop plate 9;

[0048] S4, the welding robot is started to weld the two S-arm side plates 3 and the rotating shaft sleeve 4 into one, and the S-arm of the loader is formed.

[0049] Although the embodiments of the present application have been shown and described, various changes, modifications, substitutions and variations can be made by those skilled in the art without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A welding fixture for an S-arm of a hydraulic loader, characterized in that: The system includes a side plate placement frame (1), a bushing placement frame, and a positioning hydraulic system. The bushing placement frame includes a bushing placement platform (15) and a slide (2) for placing a rotating bushing (4). The bushing placement platform (15) is provided with a placement groove (16) for placing the rotating bushing (4). The placement groove (16) is an arc-shaped groove that matches the shape of the side wall of the rotating bushing (4). The axial dimension of the placement groove (16) is smaller than the axial dimension of the rotating bushing (4). The slide (2) is located above the bushing placement platform (15). One end of the slide (2) is located on one side of the placement groove (16), and the other end of the slide (2) is located higher than the end of the slide (2) that is close to the placement groove (16). There are two side plate placement racks (1). The two side plate placement racks (1) are located on both sides of the bushing placement platform (15) and are symmetrically distributed. The top of the side plate placement rack (1) is used to place the S-arm side plate (3). There are two positioning hydraulic systems, which are located on the side of the two side plate placement frames (1) away from the bushing placement platform (15). The positioning hydraulic system includes two positioning cylinders (5) and a pushing cylinder (6) for pushing the S-arm side plate (3). After the S-arm side plate (3) is placed on the side plate placement bracket (1), the telescopic rods of the two positioning cylinders (5) are coaxial with the cylinder shaft hole (31) and the connecting rod shaft hole (33) on the S-arm side plate (3), respectively, and the placement groove (16) is coaxial with the rotating hole (32) on the S-arm side plate (3).

2. The welding fixture for the S-arm of a hydraulic loader according to claim 1, characterized in that: The top of the side plate placement rack (1) is provided with a receiving groove that matches the shape of the bottom of the S-arm side plate (3).

3. The welding fixture for the S-arm of a hydraulic loader according to claim 1, characterized in that: The slide (2) is provided with a stop mechanism at one end near the placement groove (16) for controlling the falling / stopping of the rotating bushing (4) on the slide (2).

4. The welding fixture for a hydraulic loader S-arm according to claim 3, characterized in that: The feeding and stopping mechanism includes a first feeding and stopping plate (10), a second feeding and stopping plate (9), and a gear (7). A mounting plate (13) is fixed above the slide (2). The gear (7) is rotatably mounted on the mounting plate (13) via a rotating shaft. The first feeding and stopping plate (10) is located on the side of the gear (7) near the bushing placement platform (15). The second feeding and stopping plate (9) is located on the side of the gear (7) away from the bushing placement platform (15). Both the first feeding and stopping plate (10) and the second feeding and stopping plate (9) are provided with racks (8) that mesh with the gear (7) on the side near the gear (7). One end of the first feeding and stopping plate (10) and the second feeding and stopping plate (9) are slidably connected to the mounting plate (13). The distance between the first feeding and stopping plate (10) and the second feeding and stopping plate (9) is not less than the diameter of the rotating bushing (4) and less than 1.5 times the diameter of the rotating bushing (4). The gear (7) is driven to rotate by a driving mechanism.

5. The welding fixture for a hydraulic loader S-arm according to claim 4, characterized in that: The drive mechanism includes a feed-stop cylinder (11) and a connecting rod (12). The feed-stop cylinder (11) is fixedly connected to the mounting plate (13). The output end of the feed-stop cylinder (11) is hinged to one end of the connecting rod (12). The other end of the connecting rod (12) is connected to the rotating shaft.

6. The welding fixture for the S-arm of a hydraulic loader according to claim 1, characterized in that: The slide (2) is provided with baffles (14) on both sides.

7. The welding fixture for the S-arm of a hydraulic loader according to claim 1, characterized in that: The output end of the push cylinder (6) is connected to a push plate (17), and the push plate (17) corresponds to the position of the S-arm side plate (3).

8. A method of using the welding fixture for the S-arm of a hydraulic loader according to any one of claims 1-7, characterized in that, Includes the following steps: S1. Place multiple S-arm side plates (3) on the two side plate placement frames (1) respectively, and place multiple rotating bushings (4) along the length direction on the slide (2). In the initial state, the bottom of the first stop plate (10) is close to the slide (2), and the bottom of the second stop plate (9) is far away from the slide (2). The multiple rotating bushings (4) on the slide (2) are located on the side of the first stop plate (10) away from the bushing placement platform (15). The first stop plate (10) limits the rotating bushings (4) on the slide (2). S2. Start the drive mechanism. The drive mechanism drives the gear (7) to rotate. The gear (7) drives the two feed stop plates to move through the rack (8). The first feed stop plate (10) is lifted. A rotating bushing (4) on the slide (2) near the bushing placement table (15) is unrestrained and rolls into the placement groove (16). At the same time, the second feed stop plate (9) moves down. The second feed stop plate (9) limits the remaining rotating bushing (4) on the slide (2). S3. Start the positioning cylinder (5). The two positioning cylinders (5) on each side extend the telescopic rod into the cylinder shaft hole (31) and connecting rod shaft hole (33) of the S-arm side plate (3). Then start the push cylinder (6). The two push cylinders (6) push the S-arm side plates (3) on both sides and press them against the two sides of the rotating bushing (4). S4. Start the welding robot to weld the two S-arm side plates (3) and the rotating bushing (4) together to form the S-arm of the loader.

9. The method of using the welding fixture for the S-arm of a hydraulic loader according to claim 8, characterized in that, Step S3 includes: the first feed stop plate (10) is lifted, the second feed stop plate (9) is lowered, and a rotating bushing (4) on the slide (2) near the bushing placement table (15) rolls down to the placement groove (16). Then, the drive mechanism drives the gear (7) to reverse, and the gear (7) drives the second feed stop plate (9) to be lifted and the first feed stop plate (10) to be lowered, so that the next rotating bushing (4) is located between the first feed stop plate (10) and the second feed stop plate (9).

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