Assembly welding tool for guide seat single piece of crawler frame of excavator

Abstract

The invention discloses an assembly welding tool for excavator track frame guide seat single pieces, and relates to the technical field of welding fixing, the assembly welding tool comprises a workbench and a track frame guide seat, and further comprises a group of right clamping units, a plurality of groups of top positioning units, a group of left clamping units and a group of side edge positioning units which are mounted on the workbench; and the right clamping unit is used for pressing and positioning the right side of the track frame guide seat. The device has the advantages that the bottom, the top, the left side, the right side and the rear side of the guide base are fixed, the inner supporting mechanism which supports upwards is arranged in the middle of the guide base to conduct inner supporting on a top plate of the guide base, and higher stability is achieved; meanwhile, a gap, caused by long-term use, of abrasion between the threaded sleeve and the first screw rod is compensated through the resistance structure, and after the first screw rod and the threaded sleeve are seized, the threaded sleeve can be pushed out of the meshing thread of the first screw rod, so that the first screw rod is easier to push.

Description

Technical Field

[0001] The present invention relates to the technical field of welding and fixing, and particularly relates to an assembly and welding tool for a single-piece guiding seat of an excavator track frame. Background Art

[0002] The single-piece guiding seat of the excavator track frame is an important component for installing guiding wheels on the left and right vehicle frames. It is made of steel plates welded together. Before welding, the single-piece guiding seat needs to be fixed to ensure stability during the welding process and avoid welding deviation caused by insecure fixation of the single-piece guiding seat.

[0003] The existing fixing mechanism uses bolts and nuts for fixing. Since there are many points to be fixed, the operation of using bolts and nuts for fixing is cumbersome, which affects work efficiency. Therefore, the publication number CN104552084B discloses a workpiece pressing, positioning and guiding device, which includes a workbench plate, a chuck fixing plate slidably arranged on the workbench plate, and a machine base slidably arranged on the chuck fixing plate. A chuck for positioning the female workpiece is arranged on the chuck fixing plate. The characteristics are as follows: a cylindrical guiding sleeve for guiding the workpiece to be pressed into the female workpiece is vertically arranged on the machine base. The chuck fixing plate is provided with a driving device I for driving the machine base to move. The workbench plate is provided with a driving device II for driving the chuck fixing plate into the workpiece pressing station; a limiting device for ensuring the coaxiality of the guiding sleeve on the machine base and the female workpiece is arranged on the machine base or the chuck fixing plate.

[0004] When the above workpiece pressing, positioning and guiding device fixes the workpiece, by vertically arranging the guiding sleeve on the machine base, during the pressing process, the workpiece to be pressed only needs to be simply placed into the guiding sleeve. This structure can directly perform quick guiding and positioning on the workpiece to be pressed without other assistance. Combining with the positioning device and the driving device I, the coaxial positioning of the workpiece to be pressed and the female workpiece can be quickly achieved. At the same time, under the action of the driving device II, quick pressing is realized, saving time and improving efficiency; the present invention also sets up a guiding assembly. Using this structure, during the pressing process, the guiding assembly can realize real-time auxiliary guiding and positioning on the workpiece to be pressed, and all the guiding assemblies cancel each other out and balance each other, so that the workpiece to be pressed always remains in a vertical state, preventing the workpiece to be pressed from deviating during the pressing process, ensuring the coaxiality between the workpiece to be pressed and the female workpiece during the pressing process, and having high pressing quality.

[0005] However, when the above workpiece pressing, positioning and guiding device is specifically used, since a guiding sleeve is used and the workpiece to be pressed only needs to be placed into the guiding sleeve, and the size of the guiding sleeve is fixed, different guiding sleeves need to be replaced for different workpieces, which is inconvenient to operate. After long-term use, due to the wear of the guiding sleeve, the workpiece will deviate, affecting the machining quality of the workpiece.

[0006] Therefore, a new type of single-piece assembly and welding tooling for the guide seat of the excavator crawler frame can be adopted to solve the deficiencies of the prior art. Summary of the Invention

[0007] The purpose of the present invention is to solve the problems of cumbersome operation and high probability of deviation in the later stage in the prior art, and to propose a single-piece assembly and welding tooling for the guide seat of the excavator crawler frame.

[0008] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0009] A single-piece assembly and welding tooling for the guide seat of the excavator crawler frame, including a workbench and the guide seat of the crawler frame, and further including a set of right clamping units, multiple sets of top positioning units, a set of left clamping units and a set of side positioning units installed on the workbench;

[0010] The right clamping unit is used to press and position the right side of the guide seat of the crawler frame, and cooperate with the left clamping unit to fix the left and right sides of the guide seat of the crawler frame;

[0011] The top positioning unit is used to press and fix the top of the guide seat of the crawler frame. A plurality of top columns are fixedly installed on the workbench, and the guide seat of the crawler frame is placed on the plurality of top columns to cooperate with the top positioning unit to fix the guide seat of the crawler frame up and down;

[0012] The side positioning unit is used to position the rear side of the guide seat of the crawler frame. The side positioning unit is fixed on the workbench. The guide seat of the crawler frame is placed on the top column, and the rear side abuts against the side positioning unit.

[0013] Preferably, the right clamping unit includes two guide rails fixedly installed on the workbench. A sliding plate is slidably installed on the two guide rails. A positioning side plate perpendicular to the sliding plate is fixedly installed on the sliding plate. A propulsion mechanism cooperating with the sliding plate is installed on the workbench. A positioning telescopic sleeve cooperating with the guide seat of the crawler frame is fixedly installed on the positioning side plate, and a clamping mechanism and an inner support mechanism cooperating with the guide seat of the crawler frame are installed on the positioning side plate.

[0014] Preferably, the clamping mechanism includes two columns fixedly installed on the sliding plate. A clamping arm is rotatably installed on each of the two columns. A spring is fixedly installed between the two clamping arms. A clamping head is fixedly installed on each of the two clamping arms.

[0015] Preferably, the inner support mechanism includes a column rotatably installed on the positioning side plate. A convex block is fixedly installed on the column. A pressing roller cooperating with the guide seat of the crawler frame is rotatably installed on the convex block. A worm gear is fixedly installed on the column. A worm meshing with the worm gear is rotatably installed on the positioning side plate.

[0016] Preferably, the propulsion mechanism includes a fixed sleeve fixedly installed on the workbench. A threaded sleeve is fixedly installed at the bottom of the sliding plate. A first screw rod that is in threaded rotational connection with the threaded sleeve is rotatably installed on the fixed sleeve. A rocker wheel is fixedly installed on the first screw rod. A resistance structure is installed between the fixed sleeve and the threaded sleeve.

[0017] Preferably, the resistance structure includes two connecting frames respectively fixedly installed on the fixed sleeve and the threaded sleeve. A moving frame is sleeved on the first screw rod. A plurality of sliding blocks are slidably installed on the moving frame. Two connecting rods are rotatably installed on each sliding block. Each connecting rod is rotatably connected to the corresponding connecting frame. A plurality of pneumatic telescopic rods are fixedly installed on the moving frame. A pneumatic adjustment component that cooperates with the pneumatic telescopic rods is installed on the moving frame.

[0018] Preferably, the pneumatic adjustment component includes an air storage box fixedly installed on the moving frame. A piston ring is slidably installed in the air storage box. A conduit is fixedly connected between the air storage box and each of the plurality of pneumatic telescopic rods. A pushing component that cooperates with the piston ring is installed on the moving frame.

[0019] Preferably, the pushing component includes a plurality of second screw rods rotatably installed on the moving frame. A nut is in threaded rotational connection with each second screw rod. A pushing ring is fixedly installed on the plurality of nuts together. A plurality of support rods are fixedly installed between the pushing ring and the piston ring. A gear is fixedly installed on each second screw rod. A clamping plate is fixedly installed on both sides of each gear. An internal gear ring that meshes with the gear is rotatably installed among the plurality of clamping plates together.

[0020] Preferably, the top positioning unit includes a support fixedly installed on the workbench. A cross bar is rotatably installed on the support. A threaded ring is fixedly installed on the cross bar. A lead screw is in threaded rotational connection with the threaded ring. A pressing head that cooperates with the crawler frame guide seat is rotatably installed at the lower end of the lead screw.

[0021] Preferably, heat conducting plates are fixedly installed at both ends of the positioning telescopic sleeve 14. A plurality of compensation metal plates are fixedly installed between the two heat conducting plates and the two ends of the positioning telescopic sleeve 14.

[0022] Compared with the existing technology, the advantages of the present invention are as follows:

[0023] 1. When fixing the crawler frame guide seat, the single-piece assembly welding tooling of the excavator crawler frame guide seat not only fixes the bottom, top, left and right sides and rear side of the guide seat, but also sets an upward supporting internal support mechanism in the middle position of the guide seat to internally support the top plate of the guide seat, which has higher stability, smaller offset during welding, and convenient operation.

[0024] 2. When fixing the crawler frame guide seat of the excavator, the single-piece assembly welding tooling of the crawler frame guide seat adopts a clamping mechanism to preliminarily lock the fixed guide seat and preliminarily position the guide seat. Since the clamping force is applied by the spring, the clamping force is relatively small, and it is more convenient to move the guide seat during the positioning process.

[0025] 3. When fixing the crawler frame guide seat of the excavator, the single-piece assembly welding tooling of the crawler frame guide seat of the present invention uses a resistance structure to compensate for the gap between the threaded sleeve and the first screw caused by wear due to long-term use, so that the threaded sleeve and the first screw are more tightly engaged, thereby improving the accuracy of advancement. In addition, the resistance structure can also control the direction in which the threaded sleeve and the first screw are against each other. After the direction is changed, it is adjusted from compensating the gap to reducing the engagement force. After the threaded sleeve and the first screw are engaged, the threaded sleeve is pushed out of the thread of the first screw, making it easier to push the first screw, thereby facilitating the disassembly of the guide seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0027] Figure 1 It is a structural schematic diagram of a single-piece assembly welding tool for an excavator crawler frame guide seat proposed by the present invention;

[0028] Figure 2 for Figure 1 A schematic detailed diagram of the planar structure along one of the angles after removing the left clamping unit;

[0029] Figure 3 for Figure 1 A detailed schematic diagram of the enlarged structure of multiple top positioning units and crawler guide seats;

[0030] Figure 4 for Figure 3 An enlarged schematic structural detail diagram of one of the top positioning units;

[0031] Figure 5 for Figure 1 The enlarged structural schematic detail diagram of the middle right clamping unit;

[0032] Figure 6 for Figure 5 Detailed schematic diagram of the structure after the middle pressure sensor is separated;

[0033] Figure 7 The Figure 6 structural schematic detail drawing after removing the pressure sensor and rotating by a certain angle;

[0034] Figure 8 The Figure 6 magnified structural schematic detail drawing of the clamping mechanism in the middle;

[0035] Figure 9 The Figure 6 magnified structural schematic detail drawing of the inner support mechanism in the middle;

[0036] Figure 10 The Figure 5 magnified structural schematic detail drawing of the propulsion mechanism in the middle;

[0037] Figure 11 The Figure 10 structural schematic detail drawing after removing the rocking wheel and the first screw;

[0038] Figure 12 The Figure 11 structural schematic detail drawing after removing the air pressure regulating component and rotating by a certain angle;

[0039] Figure 13 The Figure 12 structural schematic detail drawing of the plane along one of the angles;

[0040] Figure 14 The Figure 11 magnified structural schematic detail drawing of the resistance structure in the middle;

[0041] Figure 15 The Figure 14 structural schematic detail drawing after rotating by a certain angle;

[0042] Figure 16 The Figure 15 exploded structural schematic detail drawing of.

[0043] In the figure: 1 workbench, 2 right clamping unit, 3 top positioning unit, 4 left clamping unit, 5 side positioning unit, 6 crawler frame guide seat, 7 support, 8 cross bar, 9 pressing head, 10 lead screw, 11 pressure sensor, 12 positioning side plate, 13 inner support mechanism, 14 positioning telescopic sleeve, 15 clamping mechanism, 16 propulsion mechanism, 17 guide rail, 18 clamping arm, 19 spring, 20 pressing roller, 21 worm gear, 22 worm, 23 convex block, 24 resistance structure, 25 first screw, 26 rocking wheel, 27 threaded sleeve, 28 fixed sleeve, 29 moving frame, 30 sliding block, 31 pneumatic telescopic rod, 32 connecting rod, 33 connecting frame, 34 air storage box, 35 second screw, 36 internal gear ring, 37 pushing ring, 38 piston ring, 39 nut, 40 gear. Specific implementation method

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] Embodiment 1: Refer to Figures 1-2 、 Figures 5-16 , a welding fixture for assembling a single piece of the guide seat of an excavator track frame, including a workbench 1 and a track frame guide seat 6, and further including a set of right clamping units 2, multiple sets of top positioning units 3, a set of left clamping units 4 and a set of side positioning units 5 installed on the workbench 1;

[0046] The right clamping unit 2 is used to press and position the right side of the track frame guide seat 6, and cooperate with the left clamping unit 4 to fix the left and right sides of the track frame guide seat 6.

[0047] The right clamping unit 2 includes two guide rails 17 fixedly installed on the workbench 1. A sliding plate is slidably installed on the two guide rails 17. A positioning side plate 12 perpendicular to the sliding plate is fixedly installed on the sliding plate. A propulsion mechanism 16 cooperating with the sliding plate is installed on the workbench 1. A positioning telescopic sleeve 14 cooperating with the track frame guide seat 6 is fixedly installed on the positioning side plate 12, and a clamping mechanism 15 and an inner support mechanism 13 cooperating with the track frame guide seat 6 are installed on the positioning side plate 12;

[0048] A pressure sensor 11 cooperating with the sliding plate is fixedly installed on the workbench 1 for controlling the clamping force on the track frame guide seat 6.

[0049] The sliding plate is pushed by the propulsion mechanism 16 to move towards the side close to the track frame guide seat 6, so that the positioning side plate 12 abuts against the right side of the track frame guide seat 6. At this time, the sliding plate abuts against the pressure sensor 11. The pressure value displayed by the pressure sensor 11 is controlled. Subsequently, by adjusting the left clamping unit 4, the track frame guide seat 6 is pushed in the direction. At this time, the track frame guide seat 6 moves in the reverse direction. The track frame guide seat 6 will reversely press against the positioning side plate 12 to make the sliding plate move in the reverse direction. At this time, the abutting force between the sliding plate and the pressure sensor 11 decreases until the pressure on the pressure sensor 11 is zero. At this time, the clamping force of the left clamping unit 4 and the right clamping unit 2 on the track frame guide seat 6 is the pressure value on the pressure sensor 11.

[0050] Heat conducting plates are fixedly installed at both ends of the positioning telescopic sleeve 14. Multiple compensation metal plates are fixedly installed between the two heat conducting plates and the two ends of the positioning telescopic sleeve 14. The compensation metal plates are used to compensate for thermal expansion and contraction generated during the welding process, ensuring that the fixing and locking force on the track frame guide seat 6 is controlled within a certain range, and preventing locking pressure marks from appearing on the surface of the track frame guide seat 6 due to thermal expansion and contraction.

[0051] The clamping mechanism 15 includes two struts fixedly installed on the sliding plate. A clamping arm 18 is rotatably installed on each of the two struts. A spring 19 is fixedly installed between the two clamping arms 18. A clamping head is fixedly installed on each of the two clamping arms 18.

[0052] Before the track frame guide seat 6 is welded and fixed, place the track frame guide seat 6 on the top post, then manually rotate the clamping arm 18 to open the clamping arm 18, then move the track frame guide seat 6 between the two clamping arms 18. After releasing the clamping arm 18, the clamping head initially clamps and fixes the track frame guide seat 6 under the action of the spring 19. Since the clamping force is not large, it is more convenient to adjust the track frame guide seat 6.

[0053] The inner support mechanism 13 includes a cylinder rotatably installed on the positioning side plate 12. A convex block 23 is fixedly installed on the cylinder. A pressing roller 20 cooperating with the track frame guide seat 6 is rotatably installed on the convex block 23. A worm gear 21 is fixedly installed on the cylinder. A worm 22 meshing with the worm gear 21 is rotatably installed on the positioning side plate 12.

[0054] After the position of the track frame guide seat 6 is adjusted, rotate the worm 22. The worm 22 drives the worm gear 21 to rotate, thereby driving the cylinder to rotate. The rotation of the cylinder drives the convex block 23 to rotate, and then drives the pressing roller 20 to rotate, so that the pressing roller 20 abuts against the inner top wall of the track frame guide seat 6, and cooperates with the top positioning unit 3 to further fix the track frame guide seat 6.

[0055] The purpose of using the worm gear 21 and the worm 22 in this part is to prevent the convex block 23 from rotating under the pressing force, thus losing the supporting effect (the characteristics of the worm gear 21 and the worm 22 can only drive the worm gear 21 to rotate by rotating the worm 22, and vice versa).

[0056] The propulsion mechanism 16 includes a fixed sleeve 28 fixedly installed on the workbench 1. A threaded sleeve 27 is fixedly installed at the bottom of the sliding plate. A first screw rod 25 threadedly rotatably connected to the threaded sleeve 27 is rotatably installed on the fixed sleeve 28. A handwheel 26 is fixedly installed on the first screw rod 25. A resistance structure 24 is installed between the fixed sleeve 28 and the threaded sleeve 27.

[0057] Rotating the crank wheel 26 will drive the first screw rod 25 to rotate. The rotation of the first screw rod 25 will cause the threaded sleeve 27 to move left and right on the first screw rod 25, thereby changing the position of the sliding plate;

[0058] The left clamping unit 4 is similar in structure to the right clamping unit 2, except that it does not have the resistance structure 24. Because the track frame guide seat 6 is loosened by first loosening the right clamping unit 2, once the right clamping unit 2 is loosened, the pressing force between the threaded sleeve 27 and the first screw rod 25 in the left clamping unit 4 disappears, so the first screw rod 25 can rotate easily.

[0059] Since the positioning side plate 12 will abut against the side of the track frame guide seat 6 with a relatively large pressing force, the low pressure between the first screw rod 25 and the threaded sleeve 27 is relatively large. After long-term use, the first screw rod 25 and the threaded sleeve 27 will be worn, resulting in insufficient engagement between the threaded sleeve 27 and the first screw rod 25 and reducing the adjustment accuracy;

[0060] At the same time, the first screw rod 25 and the threaded sleeve 27 will be stuck to each other under the pressing force, and at this time, the first screw rod 25 cannot be rotated. The existing operation is to tap the threaded sleeve 27 to disengage the engagement, which will cause certain damage to the threaded sleeve 27;

[0061] Based on the above two points, the resistance structure 24 is now adopted to eliminate the influence caused by these two points:

[0062] The resistance structure 24 includes two connecting frames 33 respectively fixedly installed on the fixed sleeve 28 and the threaded sleeve 27. A moving frame 29 is sleeved on the first screw rod 25. A plurality of sliding blocks 30 are slidably installed on the moving frame 29. Two connecting rods 32 are rotatably installed on each sliding block 30. Each connecting rod 32 is rotatably connected to the corresponding connecting frame 33. A plurality of pneumatic telescopic rods 31 are fixedly installed on the moving frame 29. A pneumatic adjusting component is installed on the moving frame 29 and is matched with the pneumatic telescopic rods 31;

[0063] The pneumatic adjusting component includes an air storage box 34 fixedly installed on the moving frame 29. A piston ring 38 is slidably installed in the air storage box 34. A conduit is fixedly connected between the air storage box 34 and each of the plurality of pneumatic telescopic rods 31. A pushing component is installed on the moving frame 29 and is matched with the piston ring 38;

[0064] The pushing component includes a plurality of second screw rods 35 rotatably installed on the moving frame 29. A nut 39 is threadedly rotated on each second screw rod 35. A pushing ring 37 is fixedly installed on the plurality of nuts 39. A plurality of support rods are fixedly installed between the pushing ring 37 and the piston ring 38. A gear 40 is fixedly installed on each second screw rod 35. A clamping plate is fixedly installed on both sides of each gear 40. An internal gear ring 36 meshing with the gear 40 is rotatably installed among the plurality of clamping plates;

[0065] A rocker is rotatably mounted on the inner gear ring 36. The rocker is held and rotated to drive the inner gear ring 36 to rotate. The rotation of the inner gear ring 36 drives the gear 40 to rotate. The rotation of the gear 40 drives the second screw 35 to rotate. The rotation of the second screw 35 drives the nut 39 to move on the second screw 35, thereby driving the push ring 37 to move.

[0066] Fitting: The push ring 37 moves to drive the strut to move, thereby driving the piston ring 38 to move in the air box 34. The piston ring 38 will suck the gas in the pneumatic telescopic rod 31 into the air box 34 through the conduit, reducing the pressure in the pneumatic telescopic rod 31. At this time, the sliding block 30 has a tendency to diffuse to the surroundings. Under the action of the connecting rod 32 and the connecting frame 33, the threaded sleeve 27 will be pulled to prevent the threaded sleeve 27 from moving to the side close to the track frame guide seat 6. Once the first screw rod 25 is rotated, the threaded sleeve 27 will fit tightly against the first screw rod 25, which can compensate for the wear gap.

[0067] Disengagement: The push ring 37 moves to drive the strut to move, thereby driving the piston ring 38 to move in the gas storage box 34. The piston ring 38 will press the gas in the gas storage box 34 into the pneumatic telescopic rod 31 through the conduit, increasing the pressure in the pneumatic telescopic rod 31. At this time, the sliding block 30 has a tendency to gather toward the middle and is separated by the connecting rod 32, which will transfer part of the pressure to the connecting frame 33, so that the connecting frame 33 presses against the threaded sleeve 27. At this time, the threaded sleeve 27 will be disengaged from the place where the first screw 25 is bitten. At this time, turning the rocker 26 will make it easier to rotate the first screw 25.

[0068] The resistance structure 24 is used to compensate for the gap between the threaded sleeve 27 and the first screw rod 25 caused by wear due to long-term use, so that the threaded sleeve 27 and the first screw rod 25 can be more tightly engaged, thereby improving the accuracy of advancement. In addition, the resistance structure 24 can also control the direction in which the threaded sleeve 27 and the first screw rod 25 are against each other. After the direction is changed, it is adjusted from compensating the gap to reducing the engagement force. After the threaded sleeve 27 and the first screw rod 25 are engaged, the threaded sleeve 27 is pushed out from the thread of the first screw rod 25, making it easier to push the first screw rod 25, thereby facilitating the disassembly of the guide seat.

[0069] Embodiment 2: This embodiment is different from the embodiment 1 in that: Figures 1-4 The top positioning unit 3 is used to press and fix the top of the crawler frame guide seat 6. A plurality of top columns are fixedly installed on the workbench 1. The crawler frame guide seat 6 is placed on the plurality of top columns, and the crawler frame guide seat 6 is fixed up and down in cooperation with the top positioning unit 3.

[0070] The top positioning unit 3 includes a support 7 fixedly installed on the workbench 1. A cross bar 8 is rotatably installed on the support 7. A threaded ring is fixedly installed on the cross bar 8. A lead screw 10 is threadedly and rotatably installed on the threaded ring. The lower end of the lead screw 10 is rotatably installed with a pressing head 9 that cooperates with the crawler frame guide seat 6.

[0071] After the inner support mechanism 13 finishes supporting the inside of the crawler frame guide seat 6, rotate the cross bar 8 to make the pressing head 9 located directly above the crawler frame guide seat 6. Then rotate the lead screw 10. Under the action of the threaded ring, the lead screw 10 drives the pressing head 9 to move downwards to abut against the top of the crawler frame guide seat 6, and cooperate with the inner support mechanism 13 to fix the crawler frame guide seat 6.

[0072] Embodiment 3: The difference between this embodiment and the technical solution of Embodiment 2 lies in: Refer to Figure 1 , the side positioning unit 5 is used to position the rear side of the crawler frame guide seat 6. The side positioning unit 5 is fixed on the workbench 1. Place the crawler frame guide seat 6 on the top post, and the rear side abuts against the side positioning unit 5.

[0073] Since the crawler frame guide seat 6 is made of metal, thermal expansion and contraction will occur during the welding process. In order to reduce errors, the crawler frame guide seat 6 needs to thermally expand and extend in one direction, and remain stable in other directions. In this way, when cooling and contracting, only the retraction dimension on one side changes slightly, and the other positions remain constant, which can control the deformation amount. Therefore, only the side positioning unit 5 needs to be used to limit the rear side of the crawler frame guide seat 6, and there is no need to limit the front end of the crawler frame guide seat 6.

[0074] The specific operation steps of this device are as follows:

[0075] Before the crawler frame guide seat 6 is welded and fixed, place the crawler frame guide seat 6 on the top post, then manually rotate the clamping arm 18 to open the clamping arm 18, and then move the crawler frame guide seat 6 between the two clamping arms 18. After releasing the clamping arm 18, under the action of the spring 19, the clamping head initially clamps and fixes the crawler frame guide seat 6.

[0076] After the position of the crawler frame guide seat 6 is adjusted, rotate the worm 22. The worm 22 drives the worm gear 21 to rotate, thereby driving the column to rotate. The rotation of the column drives the convex block 23 to rotate, and then drives the pressing roller 20 to rotate, so that the pressing roller 20 abuts against the inner top wall of the crawler frame guide seat 6, and cooperate with the top positioning unit 3 to further fix the crawler frame guide seat 6.

[0077] After the above-mentioned internal support mechanism 13 finishes supporting the inside of the crawler frame guide seat 6, rotate the cross bar 8 to make the pressing head 9 located directly above the crawler frame guide seat 6, and then rotate the screw rod 10. Under the action of the threaded ring, the screw rod 10 drives the pressing head 9 to move downward to abut against the top of the crawler frame guide seat 6, and cooperate with the internal support mechanism 13 to fix the crawler frame guide seat 6;

[0078] Clamping: Hold the rocker and rotate it to drive the internal gear ring 36 to rotate. The rotation of the internal gear ring 36 drives the gear 40 to rotate. The rotation of the gear 40 drives the second screw rod 35 to rotate. The rotation of the second screw rod 35 drives the nut 39 to move on the second screw rod 35, thereby driving the pushing ring 37 to move; The movement of the pushing ring 37 drives the support rod to move, thereby driving the piston ring 38 to move in the air storage box 34. The piston ring 38 will suck the gas in the pneumatic telescopic rod 31 into the air storage box 34 through the conduit, reducing the pressure in the pneumatic telescopic rod 31. At this time, the sliding block 30 has a tendency to spread around. Under the action of the connecting rod 32 and the connecting frame 33, the threaded sleeve 27 will be pulled to prevent the threaded sleeve 27 from moving towards the side close to the crawler frame guide seat 6. Once the first screw rod 25 is rotated, the threaded sleeve 27 will closely adhere to the first screw rod 25, so as to compensate for the wear gap;

[0079] Loosening: The movement of the pushing ring 37 drives the support rod to move, thereby driving the piston ring 38 to move in the air storage box 34. The piston ring 38 will press the gas in the air storage box 34 into the pneumatic telescopic rod 31 through the conduit, increasing the pressure in the pneumatic telescopic rod 31. At this time, the sliding block 30 has a tendency to gather towards the middle. Through the separation of the connecting rod 32, part of the pressure will be transferred to the connecting frame 33, causing the connecting frame 33 to press against the threaded sleeve 27. At this time, the threaded sleeve 27 will disengage from the place where it is stuck to the first screw rod 25. At this time, rotating the handwheel 26 will make it easier to rotate the first screw rod 25;

[0080] The clamping of the crawler frame guide seat 6 by the moving of the sliding plate: Rotating the handwheel 26 will drive the first screw rod 25 to rotate. The rotation of the first screw rod 25 will cause the threaded sleeve 27 to move on the first screw rod 25, and the sliding plate moves towards the side close to the crawler frame guide seat 6, making the positioning side plate 12 abut against the right side of the crawler frame guide seat 6. At this time, the sliding plate abuts against the pressure sensor 11. Control the pressure value displayed by the pressure sensor 11, and then push the crawler frame guide seat 6 in the direction by adjusting the left clamping unit 4. At this time, the crawler frame guide seat 6 moves in the reverse direction, and the crawler frame guide seat 6 will reversely press against the positioning side plate 12 to make the sliding plate move in the reverse direction. At this time, the pressing force between the sliding plate and the pressure sensor 11 decreases until the pressure on the pressure sensor 11 is zero. At this time, the clamping force of the left clamping unit 4 and the right clamping unit 2 on the crawler frame guide seat 6 is the pressure value on the pressure sensor 11.

[0081] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A pair-assembling and welding tooling for a single piece of a crawler frame guide seat of an excavator, comprising a workbench (1) and a crawler frame guide seat (6), characterized in that, It also includes a set of right clamping units (2), multiple sets of top positioning units (3), a set of left clamping units (4) and a set of side positioning units (5) installed on the workbench (1); The right clamping unit (2) is used to press and position the right side of the crawler frame guide seat (6), and cooperate with the left clamping unit (4) to fix the left and right sides of the crawler frame guide seat (6); The top positioning unit (3) is used to press and fix the top of the crawler frame guide seat (6). A plurality of top columns are fixedly installed on the workbench (1), and the crawler frame guide seat (6) is placed on the plurality of top columns to cooperate with the top positioning unit (3) to fix the crawler frame guide seat (6) up and down; The side positioning unit (5) is used to position the rear side of the crawler frame guide seat (6). The side positioning unit (5) is fixed on the workbench (1), and the crawler frame guide seat (6) is placed on the top column with its rear side abutted against the side positioning unit (5).

2. The assembling and welding tooling for the single-piece guiding seat of the excavator crawler frame according to claim 1, characterized in that, The right clamping unit (2) includes two guide rails (17) fixedly installed on the workbench (1). A sliding plate is slidably installed on the two guide rails (17). A positioning side plate (12) perpendicular to the sliding plate is fixedly installed on the sliding plate. A propulsion mechanism (16) cooperating with the sliding plate is installed on the workbench (1). A positioning telescopic sleeve (14) cooperating with the crawler frame guide seat (6) is fixedly installed on the positioning side plate (12), and a clamping mechanism (15) and an inner support mechanism (13) cooperating with the crawler frame guide seat (6) are installed on the positioning side plate (12).

3. The assembling and welding tooling for the single-piece guiding seat of the excavator crawler frame according to claim 2, characterized in that, The clamping mechanism (15) includes two struts fixedly installed on the sliding plate. A clamping arm (18) is rotatably installed on each of the two struts. A spring (19) is fixedly installed between the two clamping arms (18). A clamping head is fixedly installed on each of the two clamping arms (18).

4. The assembling and welding tooling for a single-piece guiding seat of an excavator crawler frame according to claim 2, characterized in that The inner support mechanism (13) includes a cylinder rotatably installed on the positioning side plate (12). A convex block (23) is fixedly installed on the cylinder. A pressing roller (20) cooperating with the crawler frame guide seat (6) is rotatably installed on the convex block (23). A worm gear (21) is fixedly installed on the cylinder. A worm (22) meshing with the worm gear (21) is rotatably installed on the positioning side plate (12).

5. The assembling and welding tooling for a single piece of the guide seat of the excavator crawler frame according to claim 2, characterized in that, The propulsion mechanism (16) includes a fixed sleeve (28) fixedly installed on the workbench (1). A threaded sleeve (27) is fixedly installed at the bottom of the sliding plate. A first screw rod (25) threadedly rotatably connected to the threaded sleeve (27) is rotatably installed on the fixed sleeve (28). A hand wheel (26) is fixedly installed on the first screw rod (25). A resistance structure (24) is installed between the fixed sleeve (28) and the threaded sleeve (27).

6. The assembling and welding tooling for the single-piece guiding seat of the excavator crawler frame according to claim 5, characterized in that, The resistance structure (24) includes two connecting frames (33) respectively and fixedly installed on the fixed sleeve (28) and the threaded sleeve (27). A moving frame (29) is sleeved on the first screw rod (25). A plurality of sliding blocks (30) are slidably installed on the moving frame (29). Two connecting rods (32) are rotatably installed on each sliding block (30). Each connecting rod (32) is rotatably connected to the corresponding connecting frame (33). A plurality of pneumatic telescopic rods (31) are fixedly installed on the moving frame (29). A pneumatic adjustment component matched with the pneumatic telescopic rods (31) is installed on the moving frame (29).

7. The assembling and welding tooling for the single-piece guiding seat of the excavator crawler frame according to claim 6, characterized in that, The pneumatic adjustment component includes an air storage box (34) fixedly installed on the moving frame (29). A piston ring (38) is slidably installed in the air storage box (34). A conduit is fixedly connected between the air storage box (34) and each of the plurality of pneumatic telescopic rods (31). A pushing component matched with the piston ring (38) is installed on the moving frame (29).

8. The assembling and welding tooling for the single-piece guiding seat of the excavator crawler frame according to claim 7, characterized in that, The pushing component includes a plurality of second screw rods (35) rotatably installed on the moving frame (29). A nut (39) is threadedly and rotatably installed on each second screw rod (35). A pushing ring (37) is fixedly installed on the plurality of nuts (39). A plurality of support rods are fixedly installed between the pushing ring (37) and the piston ring (38). A gear (40) is fixedly installed on each second screw rod (35). A clamping plate is fixedly installed on both sides of each gear (40). An internal gear ring (36) meshing with the gear (40) is rotatably installed among the plurality of clamping plates.

9. The assembling and welding tooling for the single-piece guiding seat of the excavator crawler frame according to claim 1, characterized in that, The top positioning unit (3) includes a support (7) fixedly installed on the workbench (1). A cross bar (8) is rotatably installed on the support (7). A threaded ring is fixedly installed on the cross bar (8). A lead screw (10) is threadedly and rotatably installed on the threaded ring. A pressing head (9) matched with the crawler frame guide seat (6) is rotatably installed at the lower end of the lead screw (10).

10. The assembling and welding tooling for the single-piece guiding seat of the excavator crawler frame according to claim 2, characterized in that, Heat conducting plates are fixedly installed at both ends of the positioning telescopic sleeve (14). A plurality of layers of compensating metal plates are fixedly installed between the two heat conducting plates and the two ends of the positioning telescopic sleeve (14).

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