Positioning tool for mud scraper seat of crawler machine

Abstract

The utility model discloses a crawler machine mud scraper seat positioning tool which comprises a tool support, a plate seat positioning device, a vehicle beam positioning device and a pressing mechanism, the plate seat positioning device, the vehicle beam positioning device and the pressing mechanism are arranged on the tool support, the plate seat positioning device comprises an air cylinder, a carrying table plate and a plate seat positioning pin, and the air cylinder is used for driving the carrying table plate to stretch out and draw back in the axial direction. The plate seat positioning pin is fixedly arranged on the carrying table plate, and the position and the size of the plate seat positioning pin are matched with the shape of a mud scraping plate seat to be positioned and the position and the size of a screw hole in the mud scraping plate seat; the trolley beam positioning device is used for positioning a trolley beam to be welded; according to the device, a plurality of mud scraping plate seats are positioned at a time, and a central threaded hole is adopted for positioning, so that the product positioning precision is ensured, and the working intensity of workers is greatly reduced.

Description

Technical Field

[0001] This solution relates to the field of machining positioning tooling, and specifically relates to a positioning tooling for the mud scraper seat of a crawler machine. Background Art

[0002] When a crawler-type combine harvester operates in the farmland, it is inevitable that the crawler will be stained with mud. If it is not cleaned in time, it will affect the normal operation. Therefore, a mud scraper is also installed on the crawler support of the crawler-type combine harvester to timely remove the mud sticking to the crawler.

[0003] In order to ensure the working efficiency of the mud scraper, during assembly, the clearance between the wheel system of the crawler and the mud scraper is very small. Once the mud scraper is not accurately positioned, the phenomenon of the mud scraper rubbing against the wheel system will occur, which is difficult to repair and has a high repair labor intensity. This requires accurate positioning when welding and installing the mud scraper seat of the mud scraper.

[0004] The mud scraper seat is oval in shape and is provided with two screw holes for installing the mud scraper. The existing positioning method of the mud scraper seat relies on the abutment between the notch reserved on the mud scraper template and the arc surface of the mud scraper seat to achieve positioning. However, since the mud scraper seat is generally cut from a whole plate based on a laser cutting machine, and the accuracy of laser cutting is ±0.5 mm, this results in the positioning method based on the outer arc surface being limited by the accuracy of laser cutting. If the accuracy of the outer arc surface during cutting is low, the positioning accuracy of the mud scraper seat is also low, which makes it difficult to ensure the precise matching of the position of the future mud scraper seat and the position of the mud scraper, and it is very easy to cause the situation that the mud scraper after assembly rubs against the wheel system. Since the mud scraper is a consumable and also a standard machined part, when the positioning accuracy of the mud scraper seat for installing it is poor, it will cause the situation that any subsequent replacement of the mud scraper will rub against the wheel system, thus resulting in a very high later maintenance cost and great maintenance difficulty. Summary of the Invention

[0005] The technical problem to be solved by the present utility model is how to accurately position the mud scraper seat to be welded on the trolley beam to be processed.

[0006] The specific technical solution of the present utility model to solve the above technical problems is as follows:

[0007] A positioning tooling for the mud scraper seat of a crawler machine, including a tooling support and a plate seat positioning device, a vehicle beam positioning device, and a pressing mechanism provided on the tooling support. The plate seat positioning device includes a cylinder, a carrier plate, and a plate seat positioning pin. The cylinder is used to drive the carrier plate to expand and contract axially. The plate seat positioning pin is fixedly provided on the carrier plate, and the position and size of the plate seat positioning pin are adapted to the shape of the mud scraper seat to be positioned and the position and size of the screw holes on the mud scraper seat;

[0008] The trolley beam positioning device is used to position the trolley beam to be welded;

[0009] The pressing mechanism is used to press the trolley beam to be welded.

[0010] Preferably, the pressing mechanism includes a horizontal press and a vertical press. The horizontal press is used to press the trolley beam to be processed in the horizontal direction; the vertical press is used to press the trolley beam to be processed in the vertical direction.

[0011] Preferably, the trolley beam positioning device includes a cylinder, and a trolley beam positioning pin is fixedly arranged at the output shaft end of the cylinder; a positioning plate is arranged at a position corresponding to the trolley beam positioning pin on the tooling bracket, a pin shaft is arranged on the positioning plate, and the pin shafts at the ends of the positioning plate and the trolley beam positioning pin are both conical or provided with chamfers. The pin shaft on the positioning plate and the trolley beam positioning pin are used to insert into the pipe socket of the trolley beam to be processed to realize the positioning of the trolley beam.

[0012] Preferably, the pressing mechanism includes a cylinder and a pressing plate fixedly arranged at the output shaft end of the cylinder.

[0013] Preferably, in the plate seat positioning device, a magnet is also arranged beside the plate seat positioning pin. The magnet is used to adsorb the mud scraping plate seat to be processed, so that it is firmly fixed on the plate seat positioning pin before being positioned on the surface of the trolley beam to be processed.

[0014] Preferably, the carrier plate and the plate seat positioning pin arranged on the carrier plate can be adaptively replaced according to different specifications of the trolley beam to be processed.

[0015] Preferably, it further includes a detachable heightening block, and the heightening block is used to heighten the trolley beam to be processed, so as to facilitate the installation of the hoisting piece and adapt to different height specifications of the trolley beam to be processed.

[0016] Preferably, it further includes a control panel, and the control panel is used to control the actions of each cylinder.

[0017] Preferably, there are at least two trolley beam positioning devices, and the two trolley beam positioning devices are respectively arranged at positions close to both ends of the length direction of the trolley beam to be processed. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the first state of the positioning tooling of the present invention;

[0019] Figure 2 is a schematic diagram of the second state of the positioning tooling of the present invention;

[0020] Figure 3 is a schematic diagram of the positioning tooling of the present invention after installing the workpiece;

[0021] Figure 4 is Figure 1 Enlarged view of location A in

[0022] Figure 5 is Figure 4 Schematic diagram after installing the sludge scraping plate seat from the same perspective;

[0023] Figure 6 is Figure 2 Enlarged view of location B in

[0024] Figure 7 is Figure 3 Enlarged view of location C in

[0025] In the attached drawings, the list of component names represented by each reference numeral is as follows:

[0026] 1. Tooling bracket;

[0027] 21. First plate seat locator; 22. Second plate seat locator; 23. Third plate seat locator; 24. Fourth plate seat locator; 25. Fifth plate seat locator; 26. Sixth plate seat locator; 27. Seventh plate seat locator; 28. Eighth plate seat locator;

[0028] 201. Carrier plate; 202. Plate seat locating pin; 203. Magnet;

[0029] 31. First car beam locator; 32. Second car beam locator;

[0030] 301. Locating plate; 302. Car beam locating pin;

[0031] 41. Horizontal compressor; 42. Vertical compressor; 401. Compression plate;

[0032] 5. Cylinder;

[0033] 6. Trolley beam; 61. Pipe seat;

[0034] 7. Sludge scraping plate seat; 71. Screw hole;

[0035] 8. Spacer block;

[0036] 9. Control panel. Specific embodiments

[0037] The principles and features of the present invention will be described below in conjunction with the attached drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0038] As Figures 1 - 3As shown in the figure, a positioning tooling for the mud scraping plate seat of a crawler machine includes a tooling bracket 1, a plate seat positioning device, a car body beam positioning device, and a pressing mechanism provided on the tooling bracket 1. The plate seat positioning device includes a cylinder 5, a carrier plate 201, and a plate seat positioning pin 202. The cylinder 5 is used to drive the carrier plate 201 to expand and contract axially. The plate seat positioning pin 202 is fixedly provided on the carrier plate 201, and the position and size of the plate seat positioning pin 202 are adapted to the position and size of the screw hole 71 on the mud scraping plate seat 7 to be positioned.

[0039] The car body beam positioning device is used to position the car body beam 6 to be welded.

[0040] The pressing mechanism is used to press the car body beam 6 to be welded.

[0041] Compared with the prior art, it has the following beneficial effects: The plate seat positioning pin 202 on the carrier plate 201 is inserted into the installation screw hole 71 on the mud scraping plate seat 7 to achieve positioning, that is, the positioning is based on the screw hole 71 for installing the mud scraping plate in the future, so as to ensure the accuracy of the gap between the mud scraping plate and the gear train after assembly, and the error of laser cutting will not be brought in. Based on the positioning of the mud scraping plate seat 7 by this positioning device, the assembly accuracy of the finished product is higher.

[0042] In this embodiment, specifically, the plate seat positioning device includes a first plate seat positioner 21, a second plate seat positioner 22, a third plate seat positioner 23, a fourth plate seat positioner 24, a fifth plate seat positioner 25, a sixth plate seat positioner 26, a seventh plate seat positioner 27, and an eighth plate seat positioner 28. The first plate seat positioner 21 and the fifth plate seat positioner 25 are oppositely arranged on both sides of the car body beam 6 to be processed, and two groups of plate seat positioning pins 202 are respectively provided thereon for respectively positioning and fixing two mud scraping plate seats 7. The second plate seat positioner 22 and the sixth plate seat positioner 26, the third plate seat positioner 23 and the seventh plate seat positioner 27, and the fourth plate seat positioner 24 and the eighth plate seat positioner 28 are oppositely arranged on both sides of the car body beam 6 to be processed, and one group of plate seat positioning pins 202 is respectively provided thereon, each for positioning one mud scraping plate seat 7.

[0043] According to different product specifications, some or all of the plate seat positioning devices are enabled to achieve the positioning of the mud scraping plate seat 7.

[0044] In this embodiment, specifically, the pressing mechanism includes a horizontal press 41 and a vertical press 42. The horizontal press 41 is used to press the car body beam 6 to be processed in the horizontal direction; the vertical press 42 is used to press the car body beam 6 to be processed in the vertical direction.

[0045] Such as Figure 6As shown in the figure, in this embodiment, specifically, the vehicle beam positioning device includes a cylinder 5, and a vehicle beam positioning pin 302 is fixedly provided at the output shaft end of the cylinder 5; a positioning plate 301 is provided at a position on the tooling bracket 1 corresponding to the vehicle beam positioning pin 302. A pin shaft is provided on the positioning plate 301. The pin shaft on the positioning plate 301 and the end of the vehicle beam positioning pin 302 are both conical or provided with chamfers. The pin shaft on the positioning plate 301 and the vehicle beam positioning pin 302 are used to insert into the pipe socket 61 of the trolley beam 6 to be processed to achieve the positioning of the trolley beam 6. The purpose of both the pin shaft on the positioning plate 301 and the end of the vehicle beam positioning pin 302 being conical or provided with chamfers is to facilitate insertion into the pipe socket 61.

[0046] In this embodiment, specifically, there are at least two vehicle beam positioning devices, and the two vehicle beam positioning devices are respectively arranged at positions close to both ends of the trolley beam 6 to be processed in the length direction.

[0047] Positioning and fixing from both ends is more secure.

[0048] In this embodiment, specifically, the pressing mechanism includes a cylinder 5 and a pressing plate 401 fixedly provided at the output shaft end of the cylinder 5. The area of the pressing plate 401 is relatively large, which can provide a sufficient pressing force while avoiding obvious deformation at the pressed position of the trolley beam 6.

[0049] As Figure 4 、 Figure 5 shown in the figure, in this embodiment, specifically, in the plate seat positioning device, a magnet 203 is also provided beside the plate seat positioning pin 202. The magnet 203 is used to adsorb the mud scraping plate seat 7 to be processed, so that it is firmly fixed on the plate seat positioning pin 202 before being positioned on the surface of the trolley beam 6 to be processed. There are two mounting bolts on each mud scraping plate seat 7, so each group of plate seat positioning pins 202 is actually a pair. A magnet 203 is arranged between a pair of plate seat positioning pins 202. When the mud scraping plate seat 7 is pre-positioned on the plate seat positioning device, due to the suction force of the magnet, the mud scraping plate seat 7 will not fall due to vibration or the like.

[0050] In this embodiment, specifically, the carrier plate 201 and the plate seat positioning pins 202 provided on the carrier plate 201 can be adaptively replaced according to different specifications of the trolley beam 6 to be processed. That is, it can be adapted to different specifications of the trolley beam 6, realizing one tooling that can be adapted to multiple specifications of products.

[0051] In this embodiment, specifically, it further includes a detachable heightening block 8, which is used to heighten the trolley beam 6 to be processed, so as to facilitate the installation of the hoisting member and adapt to trolley beams 6 with different height specifications to be processed. Since the processing of the trolley beam 6 involves more than just this one process, during the transfer between different processes, it may be hoisted. For hoisting, there may be special lifting lugs or an independent hoisting tooling may be required. By means of the heightening block 8, there is a certain gap between the trolley beam 6 to be processed and the tooling support 1, which is convenient for setting the possible hoisting tooling.

[0052] In this embodiment, specifically, it further includes a control panel, which is used to control the actions of each cylinder to achieve semi-automatic operation and simplify the operation process.

[0053] The usage method of this device is as follows:

[0054] Put the welded trolley beam after electric welding into this device, align the positioning shafts of the first trolley beam locator 31 and the second trolley beam locator 32 with the first tube seat 61 and the seventh tube seat 61 of the trolley beam, and press the button for controlling clamping on the control panel. The first trolley beam locator 31 and the second trolley beam locator 32 act, insert into the tube seat 61 of the trolley beam 6, and push the trolley beam 6 into the correct positioning position. Subsequently, the horizontal presser 41 and the vertical presser 42 act to press the trolley beam 6 from the horizontal and vertical directions respectively, further ensuring the stability of its position in subsequent operations; Assemble the seven sludge scraping seat 7 to be welded onto the seat positioning device. Specifically, it is assembled onto the first seat locator 21; the second seat locator 22; the third seat locator 23; the fourth seat locator 24; the fifth seat locator 25; the sixth seat locator 26; In this example, there are two groups of seat positioning pins 202 on the fourth seat locator 24, but the sludge scraping seat 7 is placed only on one group of seat positioning pins 202. Since there are magnets 203 on the seat positioning device, even if the sludge scraping seat 7 is just placed on it, it can be magnetically adsorbed and fixed on the seat positioning device. Press the button for controlling the positioning of the sludge scraping seat 7 on the control panel 9, and each seat positioning device acts to press the sludge scraping seat 7 onto the corresponding position of the trolley beam. At this time, the relative position between the sludge scraping seat 7 and the trolley beam 6 is correct and they are pressed to eliminate the gap between the two, as Figure 7As shown in the figure, spot-weld and fix each mud scraper seat 7 in place. Pay attention to spot-welding the two side surfaces of the mud scraper seat 7 to ensure firm and reliable spot-welding fixation. After the spot-welding fixation is completed, press the stop button, and the cylinders of each pressing mechanism, the cylinders of each plate seat positioning device, and the cylinders of the vehicle beam positioning device will all return to their original positions. Press the end button on the control panel 9, and the trolley beam 6 will be disengaged from the fixture, and then the trolley beam 6 will be lifted and transferred to the next working station. This device can position multiple mud scraper seats at one time and uses a central threaded hole for positioning, ensuring the positioning accuracy of the final product, improving the product quality, and realizing semi-automatic positioning based on the control panel, greatly reducing the labor intensity of employees.

[0055] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A positioning tooling for the mud scraping plate seat of a crawler machine, characterized in that It includes a tooling bracket (1), a plate seat positioning device, a car body beam positioning device, and a pressing mechanism arranged on the tooling bracket (1). The plate seat positioning device includes a cylinder (5), a carrier plate (201), and a plate seat positioning pin (202). The cylinder (5) is used to drive the carrier plate (201) to expand and contract axially. The plate seat positioning pin (202) is fixedly arranged on the carrier plate (201), and the position and size of the plate seat positioning pin (202) are adapted to the shape of the mud scraper plate seat (7) to be positioned and the position and size of the screw holes (71) on the mud scraper plate seat (7). The car body beam positioning device is used to position the trolley beam (6) to be welded. The pressing mechanism is used to press the trolley beam (6) to be welded.

2. The positioning tooling for the mud scraping plate seat of the crawler machine according to claim 1, characterized in that, The pressing mechanism includes a horizontal press (41) and a vertical press (42). The horizontal press (41) is used to press the trolley beam (6) to be processed in the horizontal direction; the vertical press (42) is used to press the trolley beam (6) to be processed in the vertical direction.

3. The positioning tooling for the mud scraping plate seat of the crawler machine according to claim 2, wherein, The car body beam positioning device includes a cylinder (5), and a car body beam positioning pin (302) is fixedly arranged at the output shaft end of the cylinder (5); a positioning plate (301) is arranged at the position corresponding to the car body beam positioning pin (302) on the tooling bracket (1). A pin shaft is arranged on the positioning plate (301). The pin shaft on the positioning plate (301) and the end of the car body beam positioning pin (302) are both conical or provided with chamfers. The pin shaft on the positioning plate (301) and the car body beam positioning pin (302) are used to insert into the pipe seat (61) of the trolley beam (6) to be processed to realize the positioning of the trolley beam (6).

4. The positioning tooling for the mud scraper seat of the crawler machine according to claim 1, characterized in that, The pressing mechanism includes a cylinder (5) and a pressing plate (401) fixedly arranged at the output shaft end of the cylinder (5).

5. The positioning tooling for the mud scraping plate seat of the crawler machine according to claim 1, characterized in that, In the plate seat positioning device, a magnet (203) is also arranged beside the plate seat positioning pin (202). The magnet (203) is used to adsorb the mud scraper plate seat (7) to be processed, so that it is firmly fixed on the plate seat positioning pin (202) before being positioned on the surface of the trolley beam (6) to be processed.

6. The positioning tooling for the mud scraping plate seat of the crawler machine according to claim 1, characterized in that, The carrier plate (201) and the plate seat positioning pin (202) arranged on the carrier plate (201) can be adaptively replaced according to different specifications of the trolley beam (6) to be processed.

7. The positioning tooling for the mud scraper seat of the crawler machine according to claim 1, characterized in that, It also includes a detachable heightening block (8). The heightening block (8) is used to heighten the trolley beam (6) to be processed, so as to facilitate the installation of the lifting parts and adapt to trolley beams (6) with different height specifications.

8. The positioning tooling for the mud scraping plate seat of the crawler machine according to claim 1, characterized in that It also includes a control panel, and the control panel is used to control the actions of each cylinder.

9. The positioning tooling for the mud scraping plate seat of the crawler machine according to claim 1, characterized in that The car body beam positioning device includes at least two, and the two car body beam positioning devices are respectively arranged at positions near both ends in the length direction of the trolley beam (6) to be processed.

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