Device and method for improving welding strength of loader bucket teeth

Abstract

The present invention belongs to the technical field of welding positioning equipment, and specifically relates to a device and method for improving the welding strength of the bucket teeth of a loader, including a spring clip and a pressing and fixing mechanism; the spring clips correspond to the bucket teeth one by one, the spring clips are detachably and fixedly clamped on the bucket teeth, and one end of the bucket teeth away from the spring clip is connected to the bucket mouth plate; by using the spring clips to clamp the bucket teeth and utilizing the shortening of the length of the positioning frame to press against the bucket teeth and the bucket mouth plate, the difficulty of the relative position change between the bucket teeth and the bucket mouth plate is increased. Therefore, during the welding process, the stability of the connection between the bucket teeth and the bucket mouth plate can be effectively enhanced, which can not only enhance the welding convenience but also reduce the probability of welding mistakes, and ultimately the welding strength can be correspondingly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding positioning equipment, and specifically relates to a device and method for improving the welding strength of the bucket teeth of a loader bucket. Background Art

[0002] The bucket, as a key working device of a wheel loader, mainly consists of two parts: bucket teeth and a bucket shell, and the bucket teeth are welded to the bucket mouth plate of the bucket shell. Among them, the bucket teeth, as the working components directly in contact with the material, are long-term subjected to severe impact loads and abrasive wear. Research shows that the welding interface between the bucket teeth and the bucket mouth plate belongs to a structurally weak area, and the weld strength parameters in this area play a decisive role in the service life of the bucket.

[0003] There are usually multiple bucket teeth on the bucket, and they are welded to the end of the bucket shell at equal intervals in a linear arrangement. During the welding preparation process, workers need to determine the positions of the bucket teeth by measurement. At the same time, during the welding process, workers need to manually fix the positions of the bucket teeth. When welding angle deviation, uneven weld stress and other faults occur due to movement and jitter during the welding of the bucket teeth, it will affect the uniform stress of the finished bucket during use, and in severe cases, it may even lead to cracks or detachment accidents between the bucket teeth and the bucket shell.

[0004] In order to assist the welding of the bucket teeth and improve the welding strength, a Chinese patent with the publication number CN117047386B has disclosed a processing device for loading mechanism components. This device is fixed inside buckets of different widths and can assist multiple bucket teeth to be quickly inserted into the front end of the bucket in a linear array through multiple positioning blocks and positioning plates. Subsequently, the welding rod can be welded between the bottom sides of all the bucket teeth and the inner bottom end of the bucket through a spraying mechanism, so as to realize the preliminary welding pre-fixation of multiple bucket teeth, and thus provide an auxiliary effect for the welding of the bucket teeth. However, it is found in the actual application process that since the connection part between the bucket teeth and the bucket is blocked when this device fixes the bucket teeth, and due to its connection method being too rigid, it is not only inconvenient to pre-treat the connection part between the bucket teeth and the bucket, but also requires pre-welding first and then actual welding, resulting in a too complex welding process.

[0005] In view of this, the present invention proposes a device and method for improving the welding strength of the bucket teeth of a loader bucket to solve the above technical problems. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve the above technical problems, the present invention proposes a device and method for improving the welding strength of the bucket teeth of a loader bucket.

[0007] The technical solution adopted by the present invention to solve its technical problems is: A device for improving the welding strength of the bucket teeth of a loader bucket according to the present invention includes a spring clip and a top pressing and fixing mechanism;

[0008] The spring clips correspond to the bucket teeth one by one. The spring clips are detachably and fixedly clamped and installed on the bucket teeth. One end of the bucket tooth away from the spring clip is connected to the bucket mouth plate;

[0009] The pressing and fixing mechanism is installed on the bucket mouth plate and the spring clip. The pressing and fixing mechanism cooperates with the spring clip to press and fix the bucket mouth plate and the bucket teeth. The pressing and fixing mechanism includes a positioning frame, a connecting ring and a spring telescopic rod;

[0010] The positioning frame is detachably and fixedly installed on the bucket mouth plate, and the positioning frame extends along the length direction of the bucket mouth plate;

[0011] The positioning frame is a C-shaped structure body. An adjustment groove is opened on the positioning frame. The adjustment groove extends along the width direction of the bucket mouth plate. The positioning frame is marked with scales along the length direction of the adjustment groove. The connecting ring is slidably installed on the positioning frame through the adjustment groove, and a fastening bolt is threadedly installed on the connecting ring;

[0012] The spring telescopic rod is fixedly installed on one side of the connecting ring facing the bucket mouth plate, and the spring clip is fixedly connected to the spring telescopic rod.

[0013] Preferably, the positioning frame is composed of a fixed end, an extending end and an adjusting screw;

[0014] The fixed ends are symmetrically installed on both sides of the bucket mouth plate. The extending end is installed on one side of the fixed end away from the bucket mouth plate. An extending groove is opened on the fixed end;

[0015] The adjusting screw is threadedly installed in the extending groove. The adjusting screw penetrates through the extending end, and the adjusting screw is used to adjust the distance between the fixed end and the extending end.

[0016] Preferably, it further includes a pre-welding treatment mechanism. The pre-welding treatment mechanism is used to perform pre-welding treatment on the bucket mouth plate and the bucket teeth, and cooperate with the pressing and fixing mechanism to enhance the welding strength. The pre-welding treatment mechanism includes a rotating rod and a heating sheet;

[0017] The rotating rod is rotatably installed on both sides of the spring telescopic rod. A heating sheet is installed at one end of the rotating rod away from the spring telescopic rod. The heating sheet is used to heat the junction of the bucket mouth plate and the bucket teeth.

[0018] Preferably, a moving groove is opened on the spring telescopic rod. The moving groove extends along the length direction of the spring telescopic rod. The rotating rod is rotatably and slidably connected to the spring telescopic rod through the moving groove, and a friction sheet is installed at the end of the rotating rod.

[0019] Preferably, a plurality of elastic sheets are fixedly mounted on the rotating rod, the heating sheet and the friction sheet are elastically mounted on the rotating rod through the elastic sheets, and the heating sheet is located on both sides of the friction sheet. In an initial state, the heating sheet and the friction sheet are deflected in a direction away from the rotating rod under the support of the elastic sheets.

[0020] Preferably, the two rotating rods on the same spring telescopic rod are elastically connected via a tension spring.

[0021] Preferably, a heat-insulating shell is fixedly mounted on the rotating rod, and the heat-insulating shell on the side away from the rotating rod is made of high-temperature resistant elastic material, and the two heat-insulating shells on the same spring telescopic rod together constitute a heat-insulating chamber.

[0022] Preferably, a drainage tube is installed on the insulation shell, the drainage tube is externally connected to an airflow delivery pump, a through hole is opened at one end of the insulation shell away from the rotating rod, and the drainage tube extends into the insulation chamber through the through hole.

[0023] Preferably, the middle part of the drainage tube is fixedly connected to the connecting ring, a telescopic groove is opened in the insulation shell, an elastic corrugated soft plate is installed in the telescopic groove, one end of the elastic corrugated soft plate is fixed in the telescopic groove, and the other end is elastically connected to the telescopic groove through an elastic reset piece, and the drainage tube is fixedly connected to the end of the elastic corrugated soft plate.

[0024] A method for improving the welding strength of bucket teeth of a loader bucket, the method comprising the following steps:

[0025] S1: Place the bucket shell on the processing table and fix the positioning frame on the bucket mouth plate. The staff manually clamps the bucket teeth one by one with spring clips, and adjusts the distance between the fixed end and the extension end by adjusting the screw so that the bucket teeth are connected to the bucket mouth plate;

[0026] S2: Push the connecting ring to slide along the adjustment groove, adjust the positions of multiple bucket teeth in accordance with the scale on the positioning frame, and tighten the fastening bolts to fix the connecting ring and the positioning frame;

[0027] S3: Clean and preheat the bucket mouth plate and bucket teeth by adjusting the screw, rotating rod, friction plate, heating plate, insulation shell and drainage pipe in sequence;

[0028] S4: During welding, the rotating rod is rotated to a side away from the bucket mouth plate, and welding equipment is used to weld the bucket teeth and the bucket mouth plate;

[0029] S5: After welding a single bucket tooth, rotate the rotating rod in the opposite direction, cover the bucket tooth with an insulation shell, and use a heating plate to keep the welding point warm.

[0030] The beneficial effects of the present invention are as follows:

[0031] 1. A device and method for improving the welding strength of the bucket teeth of a loader. By using a spring clip to clamp the bucket teeth and shortening the length of the positioning frame to apply a pressing force on the bucket teeth and the bucket mouth plate, it increases the difficulty of the relative position change between the bucket teeth and the bucket mouth plate. Therefore, during the welding process, it can effectively enhance the stability of the connection between the bucket teeth and the bucket mouth plate, improve the welding convenience, reduce the probability of welding errors, and ultimately enhance the welding strength accordingly.

[0032] 2. A device and method for improving the welding strength of the bucket teeth of a loader. Setting pre-welding preheating and post-welding heat preservation operations are both one of the conventional means to improve welding strength in the welding process. At the same time, cooperating with a temperature controller pre-connected to the heating sheet, it can preheat and keep warm the bucket teeth and the bucket mouth plate at the temperature set by the staff, thereby effectively enhancing the welding strength of the bucket teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] Figure 1 is the assembled three-dimensional view of the present invention and the bucket;

[0035] Figure 2 is the assembled three-dimensional view of the present invention and the bucket mouth plate;

[0036] Figure 3 is the assembled three-dimensional view of the present invention and the bucket mouth plate in another state;

[0037] Figure 4 is the three-dimensional view of the positioning frame;

[0038] Figure 5 is the partial three-dimensional view of the present invention;

[0039] Figure 6 is the cross-sectional view of the heat preservation shell;

[0040] Figure 7 is Figure 6 the partial enlarged view at A in

[0041] Figure 8 is the method flow chart of the present invention.

[0042] In the figure: 1. Spring clip; 11. Bucket mouth plate; 12. Bucket teeth; 2. Connecting ring; 21. Spring telescopic rod; 22. Adjusting groove; 23. Tightening bolt; 24. Fixed end; 25. Extension end; 26. Adjusting screw; 27. Extension groove; 3. Rotating rod; 31. Heating sheet; 4. Moving groove; 41. Friction sheet; 42. Elastic sheet; 43. Tensile spring; 5. Heat preservation shell; 51. Drainage pipe; 52. Through hole; 53. Telescopic groove; 54. Elastic corrugated soft plate; 55. Elastic resetting member. Detailed implementation mode

[0043] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation modes.

[0044] As Figures 1 to 7 shown, a device for improving the welding strength of the bucket teeth of a loader according to the present invention includes a spring clip 1 and a pressing and fixing mechanism;

[0045] The spring clip 1 corresponds to the bucket teeth 12 one by one. The spring clip 1 is detachably and fixedly clamped on the bucket teeth 12. One end of the bucket teeth 12 away from the spring clip 1 is connected to the bucket mouth plate 11. In the present invention, the spring clip 1 is used for elastically clamping the bucket teeth 12. The width of the spring clip 1 is smaller than the width of the bucket teeth 12, and the spring clip 1 is clamped on the side of the bucket teeth 12 away from the bucket mouth plate 11, which has little influence on the welding of the welding torch at the edge of the bucket teeth 12;

[0046] The pressing and fixing mechanism is installed on the bucket mouth plate 11 and the spring clip 1. The bucket mouth plate 11 is a part of the bucket shell and is itself a steel straight plate. The bucket teeth 12 are finally welded and fixed on the bucket mouth plate 11. The pressing and fixing mechanism cooperates with the spring clip 1 to press and fix the bucket mouth plate 11 and the bucket teeth 12. The pressing and fixing mechanism includes a positioning frame, a connecting ring 2 and a spring telescopic rod 21;

[0047] The positioning frame is detachably and fixedly installed on the bucket mouth plate 11. The positioning frame extends along the length direction of the bucket mouth plate 11. In the present invention, a conventional fixing member is installed at the end of the positioning frame, which is mainly used for detachably and fixedly connecting the positioning frame and the bucket mouth plate 11. In this embodiment, a clamping plate connected by bolts is installed at the end of the positioning frame. By adjusting the distance between the clamping plates, the positioning frame can be clamped and fixed on the bucket mouth plate 11. And when installing the positioning frame, it is necessary to adjust the extending direction of the positioning frame so that the positioning frame extends along the length direction of the bucket mouth plate 11, and finally make the spring clip 1, the bucket teeth 12 and the end of the bucket mouth plate 11 connected to the positioning frame be on the same horizontal plane;

[0048] The positioning frame is a C-shaped structure body. An adjustment groove 22 is formed on the positioning frame. The adjustment groove 22 extends along the width direction of the bucket mouth plate 11. The positioning frame is marked with scales along the length direction of the adjustment groove 22. The existence of the positioning groove is used to guide the sliding of the connecting ring 2. The existence of the scales is to facilitate the staff to determine the position of the bucket tooth 12. And the self-positioning method can facilitate the adjustment of the bucket tooth 12 according to different spacings, starting positions, etc., so that the position determination of the bucket tooth 12 has high flexibility. The connecting ring 2 is slidably installed on the positioning frame through the adjustment groove 22. A fastening bolt 23 is threadedly installed on the connecting ring 2. After finally determining the position of the bucket tooth 12, by screwing the fastening bolt 23, the fastening bolt 23 relatively fixes the connecting ring 2 and the positioning frame. Combining with the fixing effect of the positioning frame on the bucket mouth plate 11, the arrangement position of the spring clip 1 in the width direction of the bucket mouth plate 11 is fixed;

[0049] The spring telescopic rod 21 is fixedly installed on the side of the connecting ring 2 facing the bucket mouth plate 11. The spring clip 1 is fixedly connected to the spring telescopic rod 21.

[0050] The positioning frame is composed of a fixed end 24, an extension end 25 and an adjustment screw rod 26;

[0051] The fixed ends 24 are symmetrically installed on both sides of the bucket mouth plate 11. The extension end 25 is installed on the side of the fixed end 24 away from the bucket mouth plate 11. An extension groove 27 is formed on the fixed end 24;

[0052] The adjustment screw rod 26 is threadedly installed in the extension groove 27. The adjustment screw rod 26 penetrates through the extension end 25. The adjustment screw rod 26 is used to adjust the distance between the fixed end 24 and the extension end 25. The adjustment screw rod 26 penetrates through the extension end 25, and the end of the adjustment screw rod 26 away from the fixed end 24 is designed in a cross shape. When the adjustment screw rod 26 rotates, since the adjustment screw rod 26 is threadedly connected to the extension groove 27, the adjustment screw rod 26 moves in the extension groove 27, so that the length of the adjustment screw rod 26 exposed outside the extension groove 27 increases or decreases, thereby limiting the position of the extension end 25, and combining with the top pressure fixing mechanism to adjust the distance between the fixed end 24 and the extension end 25.

[0053] In the welding process of the bucket tooth 12, in order to effectively improve the welding efficiency and enhance the relative fixing effect between the bucket tooth 12 and the bucket mouth plate 11 during welding, the spring clip 1 and the top pressure fixing mechanism are provided in the present invention. By using the elastic clamping and elastic top pressure effects, the relative fixing effect between the bucket tooth 12 and the bucket mouth plate 11 is enhanced, thereby reducing the influence of vibration, jitter and other conditions on the welding strength.

[0054] Specifically, during the welding operation of the bucket tooth 12, turn the adjusting screw 26. Under the guidance of the thread of the extension slot 27, the length of the adjusting screw 26 outside the extension slot 27 increases. When the distance between the fixed end 24 and the extension end 25 reaches a certain degree, the staff first clamps and fixedly installs the fixed end 24 of the positioning frame on both sides of the bucket mouth plate 11. At this time, there is a large gap between the spring clip 1 installed on the extension end 25 through the spring telescopic rod 21 and the end of the bucket mouth plate 11. At this time, the staff manually uses the spring clip 1 to clamp multiple bucket teeth 12. At this time, the multiple bucket teeth 12 will form a whole with the corresponding spring clip 1, spring telescopic rod 21, and connecting ring 2. Manually push it to slide on the extension end 25. With the guidance of the adjustment slot 22 and the assistance of the scale, the staff can determine the positions of the multiple bucket teeth 12 according to the actual required distance. After the positions of the bucket teeth 12 are determined, the staff manually turns the fastening bolt 23 to fix the positions of the bucket teeth 12. When the positions of all the bucket teeth 12 are fixed, by turning the adjusting screw 26, the extension end 25 is pushed to move towards the fixed end 24. Since the positioning frame is parallel to the bucket mouth plate 11, as the movement distance increases, the bucket teeth 12 are gradually inserted into the bucket mouth plate 11. And as the extension end 25 continues to advance, finally the spring telescopic rod 21 between the extension end 25 and the spring clip 1 is compressed. Under the elastic action of the spring telescopic rod 21, the bucket teeth 12 are stably combined with the bucket mouth plate 11. And in actual application, the thrust received by the bucket teeth 12 is positively correlated with the contraction amount of the spring telescopic rod 21. Therefore, by continuously reducing the distance between the fixed end 24 and the extension end 25, the stability of the combination of the bucket teeth 12 and the bucket mouth plate 11 can be increased. During the welding process, the influence of external vibrations, jitters and other factors on the connection between the bucket mouth plate 11 and the bucket teeth 12 can be effectively reduced. Therefore, during the welding process, the welding strength of the two can be enhanced through the stability of the connection between the bucket mouth plate 11 and the bucket teeth 12.

[0055] In the present invention, the spring clip 1 is used to clamp the bucket teeth 12, and the shortening of the length of the positioning frame is utilized to press against the bucket teeth 12 and the bucket mouth plate 11, making it more difficult for the relative position change phenomenon to occur between the bucket teeth 12 and the bucket mouth plate 11. Therefore, during the welding process, the stability of the connection between the bucket teeth 12 and the bucket mouth plate 11 can be effectively enhanced, which can not only enhance the welding convenience but also reduce the probability of welding errors, and finally the welding strength is correspondingly improved.

[0056] As a preferred embodiment of the present invention, it further includes a pre-welding treatment mechanism. The pre-welding treatment mechanism is used to perform pre-welding treatment on the bucket mouth plate 11 and the bucket teeth 12, and cooperate with the top pressing and fixing mechanism to enhance the welding strength. The pre-welding treatment mechanism includes a rotating rod 3 and a heating sheet 31;

[0057] The rotating rod 3 is rotatably installed on both sides of the spring telescopic rod 21. A heating sheet 31 is installed at one end of the rotating rod 3 away from the spring telescopic rod 21. The heating sheet 31 is used to heat the junction of the bucket mouth plate 11 and the bucket teeth 12. The rotating rod 3 is located on the upper and lower sides of the spring telescopic rod 21, and the end of the rotating rod 3 is designed in a T shape. The heating sheet 31 is integrally designed in a C shape. When the rotating rod 3 rotates and fits on the bucket teeth 12, the heating sheet 31 is exactly located at the junction of the bucket teeth 12 and the bucket mouth plate 11. When the heating sheet 31 converts electrical energy into heat energy under the action of the power supply, it heats the junction of the bucket teeth 12 and the bucket mouth plate 11 through heat conduction. During welding, the worker manually rotates the rotating rod 3, so that the rotating rod 3 and the heating sheet 31 are away from the bucket teeth 12 to avoid hindering the welding. After welding, the rotating rod 3 is rotated again to make the heating sheet 31 heat and keep warm the welding part to slow down the cooling rate of the welding part. In this series of operations, pre-welding preheating and post-welding heat preservation operations are both one of the conventional means to improve the welding strength in the welding process. At the same time, with the temperature controller pre-connected to the heating sheet 31, the bucket teeth 12 and the bucket mouth plate 11 can be preheated and kept warm at the temperature set by the worker.

[0058] A moving groove 4 is formed in the spring telescopic rod 21. The cross-section of the moving groove 4 is in a T shape. One end of the rotating rod 3 in the moving groove 4 is spherical. Therefore, the rotating rod 3 can not only move linearly in the moving groove 4, but also rotate around the sphere. The moving groove 4 extends along the length direction of the spring telescopic rod 21. The rotating rod 3 is rotationally and slidably connected to the spring telescopic rod 21 through the moving groove 4. A friction sheet 41 is installed at the end of the rotating rod 3;

[0059] Before preheating before welding, the cleanliness of the part to be welded also has a certain influence on the welding strength. When the spring clamp 1 clamps and fixes the bucket tooth 12, the length of the positioning frame has not been adjusted at this time, so the bucket tooth 12 has not yet combined with the bucket mouth plate 11. At this time, the staff manually pushes the rotating rod 3, and then rotates the rotating rod 3. At this time, the friction plate 41 and the heating plate 31 installed on the rotating rod 3 are both located in front of the bucket tooth 12. At this time, the rotating rod 3 is pulled along the movable groove 4, causing the friction plate 41 to move toward the bucket tooth 12, and finally the friction plate 41 is inserted into the groove on the bucket tooth 12. At this time, the distance between the fixed end 24 and the extension end 25 is adjusted by adjusting the screw 26. The extension end 25 drives the spring clamp 1 and the bucket tooth 12 to move toward the bucket mouth plate 11, and finally the friction plate is clamped between the bucket tooth 12 and the bucket mouth plate 11, and By adjusting the spacing between the fixed end 24 and the extended end 25, the size of the gap between the bucket tooth 12 and the bucket mouth plate 11 can be adjusted, and the clamping force of the friction plate 41 can be adjusted. In the present embodiment, it is best if both the bucket tooth 12 and the bucket mouth plate 11 can contact the friction plate 41, and the friction plate 41 can move under the pulling and pushing of the rotating rod 3. The rotating rod 3 is manually pushed, and the friction plate 41 is pushed by the rotating rod 3, so that the friction plate 41 reciprocates in the gap between the bucket tooth 12 and the bucket mouth plate 11, and the friction force is used to grind the dirt, rust, etc. in the gap between the bucket tooth 12 and the bucket mouth plate 11. After the grinding is completed, the gap between the bucket tooth 12 and the bucket mouth plate 11 is enlarged by adjusting the screw 26, and the friction plate 41 is caused to separate from the bucket tooth 12 by rotating and moving the rotating rod 3, and then the subsequent operation can be carried out.

[0060] A plurality of elastic sheets 42 are fixedly mounted on the rotating rod 3, and the heating sheet 31 and the friction sheet 41 are elastically mounted on the rotating rod 3 through the elastic sheets 42, and the heating sheet 31 is located on both sides of the friction sheet 41. In an initial state, the heating sheet 31 and the friction sheet 41 are supported by the elastic sheets 42 and deflected in a direction away from the rotating rod 3. The elastic sheet 42 is made of elastic metal and is curved in an initial state, so that the heating sheet 31 and the friction sheet 41 are deflected in a direction away from the rotating rod 3. When the rotating rod 3 is rotated, the heating sheet 31 and the friction sheet 41 are easy to contact with the bucket mouth plate 11.

[0061] The two rotating rods 3 on the same spring telescopic rod 21 are elastically connected by a tension spring 43. The existence of the tension spring 43 makes the two rotating rods 3 on the same spring telescopic rod 21 always tend to approach each other. Therefore, when the staff manually rotates the rotating rod 3, it is easy to switch between the two states of being in contact with the bucket tooth 12 and being away from the bucket tooth 12.

[0062] As a preferred embodiment of the present invention, an insulation shell 5 is fixedly installed on the rotating rod 3, and the insulation shell 5 is made of high-temperature resistant elastic material on the side away from the rotating rod 3. The insulation shell 5 is made of highly flame-retardant material, wherein the insulation shell 5 is made of elastic high-temperature resistant material on the side away from the rotating rod 3, and the rest of the insulation shell 5 is made of hard material, so that while forming an insulation chamber, it can fit more closely with the bucket mouth plate 11, thereby improving the isolation effect of the insulation chamber from the outside world, and the two insulation shells 5 on the same spring telescopic rod 21 together constitute the insulation chamber.

[0063] The insulation shell 5 is provided with a drainage pipe 51, and the drainage pipe 51 is externally connected to an airflow delivery pump. A through hole 52 is provided at one end of the insulation shell 5 away from the rotating rod 3, and the drainage pipe 51 extends into the insulation chamber through the through hole 52. The existence of the drainage pipe 51 can pump airflow into the insulation shell 5, and utilize the heat conduction effect of the airflow and the heating plate 31 to make the temperature conduction in the insulation chamber more uniform, so as to enhance the uniformity of preheating of the bucket teeth 12 and the bucket mouth plate 11. It should be noted that the drainage pipe 51 includes an air inlet and an air outlet, and the airflow delivery pump adopts a high-temperature resistant airflow delivery pump, so that the airflow can be circulated, thereby enhancing the uniformity of preheating of the bucket mouth plate 11 and the bucket teeth 12.

[0064] The middle part of the drainage tube 51 is fixedly connected to the connecting ring 2, a telescopic groove 53 is provided in the heat preservation shell 5, an elastic corrugated soft plate 54 is installed in the telescopic groove 53, one end of the elastic corrugated soft plate 54 is fixed to the telescopic groove 53, and the other end is elastically connected to the telescopic groove 53 through an elastic reset member 55. In the present invention, the elastic reset member 55 is preferably an elastic rope or a spring. The drainage tube 51 is fixedly connected to the end of the elastic corrugated soft plate 54. Since the drainage tube 51 is inserted into the heat preservation chamber through the through hole 52, and the middle part of the drainage tube 51 is fixed on the connecting ring 2, when the rotating rod 3 deflects toward the bucket mouth plate 11, as the deflection continues, the through groove The distance from the connecting ring 2 increases, which causes the drainage tube 51 to be pulled out of the insulation chamber. When the drainage tube 51 moves, the elastic corrugated soft plate 54 is folded and contracted by pulling, and then the heating plate 31 moves to the outside of the insulation shell 5 under the elastic push of the elastic plate 42, and contacts the bucket mouth plate 11 first. When the rotating rod 3 rotates away from the bucket mouth plate 11, the distance between the through groove and the connecting ring 2 is shortened. Under the pull of the elastic reset member 55, the elastic corrugated soft plate 54 gradually unfolds and extends, and in this process, pushes the heating plate 31 to move inside the insulation shell 5, and finally blocks the heating plate 31 inside the insulation shell 5 to avoid personal injury.

[0065] like Figure 8 As shown, a method for improving the welding strength of bucket teeth of a loader bucket comprises the following steps:

[0066] S1: Place the bucket shell on the processing table, and fix the positioning frame on the bucket mouth plate 11. The staff manually clamps the bucket teeth 12 one by one with the spring clamp 1, and adjusts the distance between the fixed end 24 and the extended end 25 by adjusting the screw 26 so that the bucket teeth 12 are connected to the bucket mouth plate 11;

[0067] S2: Push the connecting ring 2 to slide along the adjusting groove 22, adjust the positions of the multiple bucket teeth 12 in accordance with the scale on the positioning frame, and tighten the fastening bolts 23 to fix the connecting ring 2 and the positioning frame;

[0068] S3: The mouth plate 11 and the bucket teeth 12 are cleaned and preheated by adjusting the screw 26, the rotating rod 3, the friction plate 41, the heating plate 31, the heat preservation shell 5 and the drainage pipe 51 in sequence;

[0069] S4: During welding, the rotating rod 3 is rotated to a side away from the bucket mouth plate 11, and the bucket teeth 12 and the bucket mouth plate 11 are welded by welding equipment;

[0070] S5: After the single bucket tooth 12 is welded, the rotating rod 3 is rotated in the opposite direction, and the bucket tooth 12 is covered with the heat-insulating shell 5 and the heating plate 31 is used to achieve heat insulation of the welding point.

[0071] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for improving the welding strength of the bucket teeth of a loader, characterized in that: It includes a spring clip (1) and a pressing and fixing mechanism; The spring clips (1) correspond to the bucket teeth (12) one by one. The spring clips (1) are detachably and fixedly clamped and installed on the bucket teeth (12). One end of the bucket teeth (12) far from the spring clip (1) is connected to the bucket mouth plate (11); The pressing and fixing mechanism is installed on the bucket mouth plate (11) and the spring clip (1). The pressing and fixing mechanism cooperates with the spring clip (1) to press and fix the bucket mouth plate (11) and the bucket teeth (12). The pressing and fixing mechanism includes a positioning frame, a connecting ring (2) and a spring telescopic rod (21); The positioning frame is detachably and fixedly installed on the bucket mouth plate (11), and the positioning frame extends along the length direction of the bucket mouth plate (11); The positioning frame is a C-shaped structure body. An adjustment groove (22) is formed on the positioning frame. The adjustment groove (22) extends along the width direction of the bucket mouth plate (11). The positioning frame is marked with scales along the length direction of the adjustment groove (22). The connecting ring (2) is slidably installed on the positioning frame through the adjustment groove (22). A fastening bolt (23) is threadedly installed on the connecting ring (2); The spring telescopic rod (21) is fixedly installed on the side of the connecting ring (2) facing the bucket mouth plate (11), and the spring clip (1) is fixedly connected to the spring telescopic rod (21).

2. The device for improving the welding strength of the bucket teeth of a loader according to claim 1, characterized in that: The positioning frame is composed of a fixed end (24), an extension end (25) and an adjustment screw rod (26); The fixed ends (24) are symmetrically installed on both sides of the bucket mouth plate (11). The extension end (25) is installed on the side of the fixed end (24) far from the bucket mouth plate (11). An extension groove (27) is formed on the fixed end (24); An adjustment screw rod (26) is threadedly installed in the extension groove (27). The adjustment screw rod (26) penetrates through the extension end (25). The adjustment screw rod (26) is used to adjust the distance between the fixed end (24) and the extension end (25).

3. The device for improving the welding strength of the bucket teeth of a loader according to claim 2, wherein: It further includes a pre-welding treatment mechanism. The pre-welding treatment mechanism is used to perform pre-welding treatment on the bucket mouth plate (11) and the bucket teeth (12), and cooperate with the pressing and fixing mechanism to enhance the welding strength. The pre-welding treatment mechanism includes a rotating rod (3) and a heating sheet (31); The rotating rod (3) is rotatably installed on both sides of the spring telescopic rod (21). One end of the rotating rod (3) far from the spring telescopic rod (21) is installed with a heating sheet (31). The heating sheet (31) is used to heat the junction of the bucket mouth plate (11) and the bucket teeth (12).

4. A device for improving the welding strength of the bucket teeth of a loader according to claim 3, characterized in that: A moving groove (4) is formed on the spring telescopic rod (21). The moving groove (4) extends along the length direction of the spring telescopic rod (21). The rotating rod (3) is rotationally and slidably connected to the spring telescopic rod (21) through the moving groove (4). A friction sheet (41) is installed at the end of the rotating rod (3).

5. The device for improving the welding strength of the bucket teeth of a loader according to claim 4, characterized in that: A plurality of elastic sheets (42) are fixedly mounted on the rotating rod (3); the heating sheet (31) and the friction sheet (41) are elastically mounted on the rotating rod (3) via the elastic sheets (42); and the heating sheet (31) is located on both sides of the friction sheet (41); in an initial state, the heating sheet (31) and the friction sheet (41) are supported by the elastic sheets (42) and deflected in a direction away from the rotating rod (3).

6. The device for improving the welding strength of the bucket teeth of a loader according to claim 5, characterized in that: The two rotating rods (3) on the same spring telescopic rod (21) are elastically connected via a tension spring (43).

7. The device for improving the welding strength of the bucket teeth of a loader according to claim 6, wherein: A heat-insulating shell (5) is fixedly mounted on the rotating rod (3); the heat-insulating shell (5) is made of a high-temperature resistant elastic material on the side away from the rotating rod (3); and the two heat-insulating shells (5) on the same spring telescopic rod (21) together form a heat-insulating chamber.

8. A device for improving the welding strength of the bucket teeth of a loader according to claim 7, characterized in that: A drainage pipe (51) is installed on each of the heat-insulating shells (5), and the drainage pipe (51) is externally connected to an airflow delivery pump. A through hole (52) is formed at one end of the heat-insulating shell (5) away from the rotating rod (3), and the drainage pipe (51) extends into the heat-insulating chamber through the through hole (52).

9. The device for improving the welding strength of the bucket teeth of a loader according to claim 8, wherein: The middle portion of the drainage tube (51) is fixedly connected to the connecting ring (2); a telescopic groove (53) is provided in the heat-insulating shell (5); an elastic corrugated soft plate (54) is installed in the telescopic groove (53); one end of the elastic corrugated soft plate (54) is fixed to the telescopic groove (53); the other end of the elastic corrugated soft plate (54) is elastically connected to the telescopic groove (53) via an elastic reset member (55); and the drainage tube (51) is fixedly connected to the end of the elastic corrugated soft plate (54).

10. A method for improving the welding strength of the bucket teeth of a loader, characterized in that: The method uses the device for improving the welding strength of loader bucket teeth as described in claim 9, and the method comprises the following steps: S1: The bucket shell is placed on a processing table, and the positioning frame is fixedly installed on the bucket mouth plate (11). The staff manually uses a spring clamp (1) to fix and clamp the bucket teeth (12) one by one, and adjusts the distance between the fixed end (24) and the extended end (25) by adjusting the screw (26) so that the bucket teeth (12) and the bucket mouth plate (11) are butted against each other; S2: Push the connecting ring (2) to slide along the adjusting groove (22), adjust the positions of the plurality of bucket teeth (12) in accordance with the scale on the positioning frame, and tighten the fastening bolts (23) to fix the connecting ring (2) to the positioning frame; S3: cleaning and preheating the bucket mouth plate (11) and bucket teeth (12) are achieved by successively adjusting the screw rod (26), the rotating rod (3), the friction plate (41), the heating plate (31), the heat-insulating shell (5) and the drainage pipe (51); S4: During welding, the rotating rod (3) is rotated to a side away from the bucket mouth plate (11), and at this time, the bucket teeth (12) and the bucket mouth plate (11) are welded using welding equipment; S5: After a single bucket tooth (12) is welded, the rotating rod (3) is rotated in the opposite direction, and the bucket tooth (12) is covered with a heat-insulating shell (5) and a heating plate (31) is used to achieve heat insulation at the welding point.

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