Automatic grinding device for excavator bucket tooth surface

Abstract

The excavator bucket tooth surface automatic grinding device comprises a rotary table and four grinding mechanisms on the outer side, six stations are arranged in the circumferential direction of the rotary table, four continuous grinding stations are arranged, the other two stations are a feeding station and a discharging station respectively, the feeding mechanism and the discharging mechanism are arranged at the corresponding positions, and each grinding mechanism is provided with a grinding support, a multi-angle adjuster, a grinding wheel and a driving motor. The adjuster is installed on the support, an adjusting portion of the adjuster can move longitudinally and transversely, the grinding wheel is installed on the adjusting portion and driven by the motor, self-locking clamps capable of releasing connecting bucket teeth are arranged on stations of the rotary table, a clamping driving air cylinder is arranged on a feeding station to assist in clamping the bucket teeth, a releasing driving air cylinder is arranged on a discharging station to assist in releasing the bucket teeth, and in addition, the self-locking clamps can rotate relative to the rotary table. And the rotary driver turns over before station conversion, so that each surface of the bucket tooth passes through the polishing wheel capable of being adjusted at multiple angles, and the polishing adaptability and efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of excavator bucket tooth grinding, and in particular to an automatic grinding device for the surface of an excavator bucket tooth. Background Art

[0002] In various engineering construction, mining and earthwork scenarios, excavators are indispensable heavy machinery and equipment, and excavator bucket teeth are key components that directly contact the working materials and bear the heavy task of excavation. Bucket teeth are usually formed by casting process, which can efficiently manufacture bucket tooth blanks that meet the basic size and shape requirements.

[0003] During the casting process, due to factors such as mold accuracy, metal liquid flow characteristics, and cooling shrinkage, a series of surface defects will inevitably appear on the formed bucket teeth. First, when the bucket teeth are demolded, the surface will have a seam of the parting surface. The seam is the excess thin metal formed by the metal liquid penetrating into the mold gap. It is hard and has irregular edges. If it is not treated, during excavation, stress concentration is easy to occur at the seam, which may cause early cracking of the bucket teeth. Secondly, the casting surface is often rough, with tiny hole defects such as sand holes and pores. Sand holes are caused by the mixing of molding sand particles into the casting, and pores are caused by incomplete degassing of the metal liquid. These defects not only affect the appearance of the bucket teeth, but more importantly, the rough surface and holes will greatly reduce the wear resistance of the bucket teeth, because when excavating sand, gravel, and ore, material particles are more likely to embed in these defects, resulting in abrasive wear and accelerating the loss of bucket teeth.

[0004] Furthermore, the dimensional accuracy of unpolished cast bucket teeth is difficult to meet the actual use requirements. There may be extra burrs and burrs on the edges, which makes it impossible for the bucket teeth to accurately fit the installation position when installed on the excavator bucket, affecting the stability of the assembly, and even causing looseness and displacement during the excavation process, greatly reducing the safety and efficiency of the operation. Based on the above disadvantages, it is extremely necessary to implement a grinding process on the excavator bucket teeth after casting to eliminate surface defects, improve dimensional accuracy and surface finish, extend the service life of the bucket teeth, and ensure stable operation of the excavator.

[0005] In the prior art, for example, Chinese patent application publication number CN117817520A discloses an excavator bucket tooth surface grinding device, whose structure includes a fixed frame, a sliding frame, a moving mechanism and a grinding mechanism; the grinding drive unit is used to drive the first grinding roller, the second grinding roller and two third grinding rollers to rotate, so as to grind the upper surface, the lower surface and the two outer side surfaces of the excavator bucket tooth. The sliding frame can move along the first direction in the fixed frame through the moving mechanism, so as to ensure that the grinding mechanism subsequently installed on the sliding frame can move accordingly to grind multiple surfaces of the excavator bucket tooth. Specifically, under the action of the grinding drive unit, the first grinding roller, the second grinding roller and the two third grinding rollers rotate, so as to grind the upper surface, the lower surface and the two outer side surfaces of the excavator bucket tooth at the same time.

[0006] In this grinding device, the first grinding roller, the second grinding roller and the two sets of third grinding rollers are rigidly set to fixed grinding angles at the mechanical structure level, lacking a flexible angle adjustment mechanism. This results in the inability to adaptively change the grinding angle when dealing with bucket teeth of different models or different degrees of wear, limiting the grinding adaptability.

[0007] At the same time, the entire grinding process is highly dependent on manual intervention to complete the replacement of bucket teeth. The operator needs to interrupt the grinding process, manually remove the bucket teeth that have been ground or are to be ground, then install new bucket teeth to be processed, and then restart the grinding equipment. This manual replacement process not only consumes additional manpower and time costs, but also makes the grinding process unable to proceed in a coherent and efficient manner, greatly reducing the overall grinding efficiency and making it difficult to meet the rhythm and needs of efficient industrial production. Summary of the invention

[0008] In view of the problems of the prior art, an automatic grinding device for the surface of excavator bucket teeth is provided. The bucket teeth are automatically mounted on self-locking clamps distributed circumferentially on a turntable, so that the four surfaces of the bucket teeth can pass through a grinding wheel whose longitudinal and lateral positions can be adjusted arbitrarily, so as to facilitate grinding of areas at different angles on the same surface of the bucket teeth, thereby solving the problems of limited grinding adaptability and low efficiency of existing grinding devices.

[0009] In order to solve the problems of the prior art, the present invention provides an automatic grinding device for the surface of bucket teeth of an excavator, comprising a rotary table and four grinding mechanisms arranged on the outer side of the rotary table, the rotary table having six stations distributed along its rotation circumference, four consecutive stations being grinding stations, and the remaining two stations being a loading station and a unloading station, respectively, the grinding mechanism being located at the grinding station, a loading mechanism being arranged at the loading station, and an unloading mechanism being arranged at the unloading station; the grinding mechanism having a grinding bracket, a multi-angle adjuster, a grinding wheel and a grinding drive motor, the grinding bracket being arranged at the grinding station, the multi-angle adjuster being arranged on the grinding bracket, and the multi-angle adjuster being arranged on the grinding wheel. The angle adjuster has an adjusting part that can move longitudinally or transversely, the grinding wheel is rotatably arranged on the adjusting part, and the grinding drive motor is arranged on the grinding bracket and is transmission-connected to the grinding wheel; self-locking clamps are arranged on the six stations of the turntable, and the self-locking clamps can be connected to the mounting cavity of the bucket teeth; a clamping drive cylinder that can guide the clamp head to clamp the bucket teeth is also arranged at the loading station; a release drive cylinder that can guide the clamp head to release the bucket teeth is also arranged at the unloading station; the self-locking clamp can rotate relative to the turntable, and a rotating drive is also arranged on the turntable to drive the self-locking clamp to flip relative to the turntable before passing each station.

[0010] Preferably, the multi-angle adjuster also includes a forward screw slide, a transverse screw slide and a vertical screw slide; the forward screw slide is slidably arranged on the grinding bracket, and the forward screw slide has a forward frame that can move radially along the turntable; the transverse screw slide is arranged on the forward frame, and the transverse screw slide has a transverse frame that can move in a direction parallel to the tangent of the turntable; the vertical screw slide is arranged on the transverse frame, and the vertical screw slide has a vertical frame that can move in a vertical direction to form an adjustment part, and the grinding wheel and the grinding drive motor are both arranged on the vertical frame.

[0011] Preferably, the self-locking clamp also includes a square tube, a pushing assembly and a positioning assembly; the square tube extends radially along the turntable and is rotatably arranged on six workstations of the turntable, the rotating drive is transmission-connected to the square tube, the end of the square tube away from the axis of the turntable has two symmetrical locking surfaces and two symmetrical abutting surfaces, and the end of the square tube facing the bottom of the inner cavity of the bucket tooth is provided with an abutment column; the locking surface has a locking pin that can extend in a direction perpendicular to it and abut in the bucket tooth pin hole; the abutment surface is provided with an abutment plate that can deflect relative to the abutment surface after the locking pin is extended to abut on the inner wall of the bucket tooth; the pushing assembly is arranged in the square tube and is transmission-connected with the locking pin and the abutment plate, the clamping drive cylinder has a pushing head that can move radially along the turntable and guide the pushing assembly to move in the square tube, and when the pushing assembly moves in a direction away from the axis of the turntable, the locking pin and the abutment plate are fixed to the bucket tooth in sequence; the positioning assembly is arranged in the square tube and can lock the position of the pushing assembly, and the release drive cylinder has a release head that can move radially along the turntable and guide the positioning assembly to release the pushing assembly.

[0012] Preferably, the pushing assembly includes an inner push frame, an outer push frame, a push rod and a connecting rod; the inner push frame and the outer push frame are both slidably arranged in the square tube along the length direction of the square tube, and the opposite ends of the two locking pins are provided with locking blocks located in the square tube, and a guide column is provided on the locking block, and the inner push frame is provided with a guide groove extending along the direction deviating from the length direction of the square tube, and the guide column extends into the guide groove and slidably cooperates with it; an elastic pushing element is provided between the outer push frame and the inner push frame, and the outer push frame is provided with a sliding block that can move along the length direction of the square tube, and the sliding block has a left limit and a right limit in the moving direction; one end of the abutment plate is rotatably connected to the end of the square tube, and the other end of the abutment plate is rotatably connected to the sliding block through a connecting rod, and a tension spring is also provided between the two abutment plates; the push rod is slidably arranged in the square tube, and the end of the push rod that deviates from the axis of the turntable is connected to the outer push frame, and the push rod is connected to the positioning assembly.

[0013] Preferably, the surface of the push rod is provided with ratchet grooves arranged along its length direction; the positioning assembly includes a positioning block, a connecting column and a release follower block; the positioning block is slidably arranged in the square tube along a direction perpendicular to the square tube, and a ratchet capable of engaging with the ratchet groove is provided at one end of the positioning block facing the push rod, and an elastic abutment element is provided between the positioning block and the inner wall of the square tube; the release follower block is slidably arranged on the outer side of the square tube along the sliding direction of the positioning block, and the release follower block has an inclined groove capable of facing the release head; the connecting column slides through the square tube, and the two ends of the connecting column are respectively connected to the positioning block and the release follower block.

[0014] Preferably, the push rod is provided with a mounting groove extending along its length direction, the mounting groove is provided with an abutment rod sliding through the push rod, a limiting ring is provided at one end of the abutment rod located at the mounting groove, a pressure plate that can be pushed by a pushing head is provided at the other end of the abutment rod, an elastic pushing element is provided between the pressure plate and the push rod, and an arc strip that can be fixed relative to the top of the turntable is also provided, the arc strip extends along the distribution direction of the grinding stations, and the pressure plate abuts against the outer wall of the arc strip at the grinding station.

[0015] Preferably, a fixed cylinder is provided on the outer side of the square tube with the same center line as the square tube, six rotating seats distributed along the circumference of the square tube are provided on the turntable, the fixed cylinder is coaxially rotatably arranged on the rotating seat, and the rotary driver comprises a rotating bevel gear ring and a fixed bevel gear ring; the rotating bevel gear ring is coaxially fixedly arranged on the fixed cylinder; the fixed bevel gear ring is arranged on the top of the turntable and is coaxial with the turntable, and the fixed bevel gear ring is stationary relative to the turntable; the rotating bevel gear ring is meshed with the fixed bevel gear ring.

[0016] Preferably, the locking pin is fitted and slidably penetrates the square tube.

[0017] Preferably, the surface of the extrapolation frame is provided with a left positioning plate and a right positioning plate, a light rod is provided between the left positioning plate and the right positioning plate, the sliding block is slidably provided on the light rod, and an elastic buffer element facing the sliding block is provided on the right positioning plate.

[0018] Preferably, the release head is U-shaped and can abut against the inclined surface of the release follower block along the radial direction of the turntable.

[0019] Compared with the prior art, the present invention has the following beneficial effects: This application uses a feeding mechanism to automatically and accurately assemble the bucket teeth on the rotary disk. Self-locking clamps are distributed on the circumference of the rotary disk. The self-locking clamps can firmly lock the bucket teeth, laying a solid foundation for the subsequent grinding process, ensuring that the bucket teeth do not deviate at all under high-speed operation and grinding impact.

[0020] The grinding wheel installed on the multi-angle adjuster can not only accurately control the vertical displacement along the longitudinal coordinate axis, but also flexibly change the horizontal position on the transverse coordinate axis. This free adjustment mode in both vertical and horizontal directions gives the grinding wheel the ability to fully cover all surfaces of the bucket teeth. When the rotary disk drives the bucket teeth to rotate, the grinding wheel can sequentially reach the four surfaces of the bucket teeth according to the preset grinding path and process parameters, and can perform fitting grinding operations on complex areas with different inclinations and curvatures on the same surface.

[0021] Compared with traditional grinding devices that have limited adaptability and inefficiency due to fixed grinding angles and cumbersome manual parts replacement, this application fundamentally breaks through the adaptation problem through the synergistic advantages of automated installation, circumferentially stable clamping, and multi-angle adjustable grinding, greatly improving the overall efficiency of the grinding process and further improving the bucket tooth grinding quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a stereoscopic diagram of an automatic grinding device for the surface of an excavator bucket tooth according to the present invention.

[0023] Figure 2 The invention is a top view of an automatic grinding device for the surface of an excavator bucket tooth.

[0024] Figure 3 The present invention is a stereoscopic diagram of a grinding mechanism in an automatic grinding device for the surface of an excavator bucket tooth.

[0025] Figure 4 The utility model is a top view of a rotary table in an automatic grinding device for the surface of bucket teeth of an excavator according to the present invention.

[0026] Figure 5 yes Figure 4 A partial enlarged view of point A.

[0027] Figure 6 yes Figure 4 A partial enlarged view of point B.

[0028] Figure 7The invention discloses a cross-sectional view of a self-locking fixture in an automatic grinding device for the surface of an excavator bucket tooth.

[0029] Figure 8 The present invention is a stereoscopic diagram of bucket teeth and a self-locking fixture in an automatic grinding device for the surface of bucket teeth of an excavator.

[0030] Fig. 9 The present invention is a schematic diagram of the internal structure of a self-locking clamp in an automatic grinding device for the surface of an excavator bucket tooth.

[0031] Fig.10 The present invention is a three-dimensional exploded view of a self-locking clamp in an automatic grinding device for the surface of an excavator bucket tooth.

[0032] Fig.11 The present invention is a three-dimensional exploded view of an inner push frame and a locking pin in an automatic grinding device for the surface of an excavator bucket tooth.

[0033] Fig.12 The present invention is a three-dimensional exploded view of a rotary table, a clamping drive cylinder and a releasing drive cylinder in an automatic grinding device for the surface of an excavator bucket tooth.

[0034] The numbers in the figure are: 1, turntable; 11, rotating seat; 2, grinding mechanism; 21, grinding bracket; 221, forward screw slide; 222, horizontal screw slide; 223, vertical screw slide; 23, grinding wheel; 24, grinding drive motor; 31, loading robot arm; 32, loading conveyor belt; 41, unloading robot arm; 42, unloading conveyor belt; 5, self-locking clamp; 51, square tube; 511, fixed cylinder; 512, abutment column; 521, inner push frame; 5211, guide groove; 522, outer push frame; 5221, left positioning plate; 5222, right positioning plate; 5223, light rod; 5224, elastic buffer element; 523, push rod; 5231, ratchet groove; 524, connecting rod; 525, elastic push element; 526, sliding block; 527, abutment rod; 5271, limit ring; 5272, pressure plate; 528, arc strip; 529, elastic push element; 531, positioning block; 5311, ratchet; 532, connecting column; 533, release follower block; 534, elastic abutment element; 54, locking pin; 541, locking block; 542, guide column; 55, abutment plate; 56, tension spring; 6, clamping drive cylinder; 61, pushing head; 7, release drive cylinder; 71, release head; 81, rotating bevel gear ring; 82, fixed bevel gear ring. DETAILED DESCRIPTION

[0035] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Fig.12 As shown, the present application provides an automatic grinding device for the surface of an excavator bucket tooth, comprising a turntable 1 and four grinding mechanisms 2 arranged on the outside of the turntable 1, the turntable 1 has six stations distributed along its rotation circumference, of which four consecutive stations are grinding stations, and the remaining two stations are respectively a loading station and a unloading station, the grinding mechanism 2 is located at the grinding station, a loading mechanism is arranged at the loading station, and a unloading mechanism is arranged at the unloading station; the grinding mechanism 2 has a grinding bracket 21, a multi-angle adjuster, a grinding wheel 23 and a grinding drive motor 24, the grinding bracket 21 is arranged at the grinding station, the multi-angle adjuster is arranged on the grinding bracket 21, and the multi-angle adjuster is arranged on the grinding bracket 21. The device has an adjustment part that can move longitudinally or transversely, the grinding wheel 23 is rotatably arranged on the adjustment part, and the grinding drive motor 24 is arranged on the grinding bracket 21 and is transmission-connected with the grinding wheel 23; self-locking clamps 5 are arranged on the six stations of the turntable 1, and the self-locking clamps 5 can be connected with the mounting cavity of the bucket teeth; a clamping drive cylinder 6 that can guide the clamp head to clamp the bucket teeth is also arranged at the loading station; a release drive cylinder 7 that can guide the clamp head to release the bucket teeth is also arranged at the unloading station; the self-locking clamp 5 can rotate relative to the turntable 1, and the turntable 1 is also provided with a rotation driver that drives the self-locking clamp 5 to flip relative to the turntable 1 before passing through each station.

[0037] The loading mechanism includes a loading robot arm 31 and a loading conveyor belt 32 , and the unloading mechanism includes a unloading robot arm 41 and a unloading conveyor belt 42 .

[0038] The turntable 1 is the circulation center of the entire grinding process, and six stations are planned in its rotation circumference. Among them, the four consecutive stations are set as grinding stations for performing the grinding process; the remaining two stations are responsible for loading and unloading. At the grinding station, the grinding mechanism 2 is placed to provide hardware support for precise grinding operations; the loading station is matched with the loading mechanism, and the unloading station is equipped with a corresponding unloading mechanism, thereby building an automated link for material flow.

[0039] The multi-angle adjuster is arranged on the grinding bracket 21, and has an adjustment part, which can move smoothly in the longitudinal and transverse dimensions to provide driving force for the dynamic movement of the grinding wheel 23. The grinding wheel 23 is assembled to the adjustment part in a rotating connection manner, so that the grinding posture can be flexibly adjusted; the grinding drive motor 24 is stably placed on the grinding bracket 21, and realizes power connection with the grinding wheel 23 through the transmission link, injecting stable and strong rotational power into the grinding operation.

[0040] Each station of the turntable 1 is equipped with a self-locking clamp 5, which establishes a stable connection with the installation cavity of the bucket teeth and supports controlled release. It can not only firmly lock the bucket teeth during the entire grinding process to ensure position accuracy, but also release them in time during the loading and unloading process to coordinate the flow of materials. At the loading station, an additional clamping drive cylinder 6 is deployed. With precise power output and guide design, the clamping drive cylinder 6 can guide the clamp head to accurately grasp the bucket teeth and start the material input link of the grinding process; the release drive cylinder 7 corresponding to the unloading station is the opposite, responsible for accurately driving the clamp head to release the bucket teeth to achieve orderly output of materials.

[0041] In order to grind all surfaces of the bucket teeth in all directions, the self-locking fixture 5 can rotate relative to the turntable 1. The turntable 1 is integrated with a rotary drive. Before the bucket teeth pass through each station, the rotary drive drives the self-locking fixture 5 to turn over in sequence to ensure that all surfaces of the bucket teeth can be exposed to the grinding path, achieving grinding without dead angles.

[0042] The loading mechanism integrates two modules: the loading robot arm 31 and the loading conveyor belt 32. The loading robot arm 31 uses multi-joint coordinated motion to accurately clamp the bucket teeth from the conveyor belt and then accurately transfer them to the loading station of the turntable 1; the loading conveyor belt 32 continuously transports the bucket teeth to be polished to maintain the continuity of loading. The unloading mechanism is similar to it. The unloading robot arm 41 is responsible for removing the polished bucket teeth from the turntable 1 and smoothly transferring them to the unloading conveyor belt 42. The unloading conveyor belt 42 transports the finished bucket teeth to the designated storage area. At this point, the full process of automated grinding of bucket teeth from blanks to polished products is completed.

[0043] like Figure 3 As shown, the multi-angle adjuster also includes a forward screw slide 221, a transverse screw slide 222 and a vertical screw slide 223; the forward screw slide 221 is slidably arranged on the grinding bracket 21, and the forward screw slide 221 has a forward frame that can move radially along the turntable 1; the transverse screw slide 222 is arranged on the forward frame, and the transverse screw slide 222 has a transverse frame that can move in a direction parallel to the tangent of the turntable 1; the vertical screw slide 223 is arranged on the transverse frame, and the vertical screw slide 223 has a vertical frame that can move in a vertical direction to form an adjustment part, and the grinding wheel 23 and the grinding drive motor 24 are both arranged on the vertical frame.

[0044] The forward screw slide 221 is equipped with a forward frame, which relies on the screw nut transmission mechanism to perform high-precision displacement along the radial direction of the turntable 1. It ensures the precise adaptation of the radial distance between the grinding wheel 23 and the bucket tooth surface to meet the grinding requirements of bucket teeth of different specifications.

[0045] The transverse screw slide 222 is firmly mounted on the forward frame, so that the grinding wheel 23 can accurately cover the grinding areas at different positions along the circumference of the bucket tooth surface, broaden the lateral coverage of the grinding operation, and adapt to the complex curved surface contour of the bucket tooth.

[0046] The vertical screw slide 223 is located on the transverse frame. The vertical screw slide 223 carries the vertical frame, which, as the final adjustment part, can perform stable and precise displacement operations in the vertical direction. The grinding wheel 23 and the grinding drive motor 24 are both firmly installed on the vertical frame. With the vertical position change of the vertical frame, the grinding wheel 23 can flexibly adjust the vertical distance from the bucket tooth surface, and cooperate with the radial and tangential displacement adjustment to meet the grinding requirements of bucket teeth at different positions and angles in all directions and at multiple angles.

[0047] like Figure 7-Figure 11 As shown, the self-locking clamp 5 also includes a square tube 51, a pushing assembly and a positioning assembly; the square tube 51 extends along the radial direction of the turntable 1 and is rotatably arranged on six stations of the turntable 1, the rotary driver is transmission-connected with the square tube 51, the end of the square tube 51 away from the axis of the turntable 1 has two symmetrical locking surfaces and two symmetrical abutting surfaces, and the end of the square tube 51 facing the bottom of the bucket tooth inner cavity is provided with an abutting column 512; the locking surface has a locking pin 54 that can extend in a direction perpendicular to it and abut in the bucket tooth pin hole; the abutting surface is provided with a locking pin 54 that can deflect relative to the abutting surface after the locking pin 54 is extended The abutment plate 55 abuts against the inner wall of the bucket tooth; the pushing component is arranged in the square tube 51 and is transmission-connected with the locking pin 54 and the abutment plate 55; the clamping drive cylinder 6 has a pushing head 61 which can move radially along the turntable 1 and guide the pushing component to move in the square tube 51; when the pushing component moves in a direction away from the axis of the turntable 1, the locking pin 54 and the abutment plate 55 are fixed to the bucket tooth in sequence; the positioning component is arranged in the square tube 51 and can lock the position of the pushing component; the releasing drive cylinder 7 has a releasing head 71 which can move radially along the turntable 1 and guide the positioning component to release the pushing component.

[0048] The square tube 51 extends linearly along the radial direction of the turntable 1 and is firmly mounted on the six stations of the turntable 1. A mechanical transmission link is constructed between the rotary driver and the square tube 51, which can provide the square tube 51 with stable and controllable rotational power, driving it to rotate precisely around the axis of the turntable 1.

[0049] The symmetrically distributed locking surfaces and the two symmetrically arranged abutment surfaces help maintain balance and stability when subjected to force. At the same time, an abutment column 512 is arranged at one end of the square tube 51 facing the bottom of the inner cavity of the bucket tooth. The abutment column 512 is used for preliminary positioning and provides a support point for subsequent precise locking of the bucket tooth.

[0050] A locking pin 54 structure is provided on the locking surface. Under the action of the driving force, the locking pin 54 can extend in a direction perpendicular to the locking surface, and finally abut against the pin hole pre-opened in the bucket tooth, achieving a preliminary rigid connection and providing axial positioning guarantee for the bucket tooth. On the abutting surface, an abutment plate 55 is provided. When the locking pin 54 is successfully extended, the abutment plate 55 can use the mechanical connection structure as a fulcrum to produce a moderate deflection relative to the abutting surface until it is tightly abutted against the inner wall of the bucket tooth, further stabilizing the bucket tooth from the side, strengthening the overall clamping effect, and preventing the bucket tooth from shaking, displacement, etc. during the grinding process.

[0051] The push assembly is placed in the inner space of the square tube 51, and forms a close transmission connection with the locking pin 54 and the abutment plate 55. The clamping drive cylinder 6 is equipped with a push head 61, which has the ability to move radially along the turntable 1. Its precise movement can guide the push assembly to move smoothly inside the square tube 51 in a direction away from the axis of the turntable 1. With the orderly movement of the push assembly, the locking pin 54 is first accurately extended according to the established procedure, followed by the abutment plate 55, which is then moved in time. The two are fixed firmly with the bucket teeth in turn, thereby starting the precise positioning stage of the bucket teeth in the grinding process.

[0052] The positioning assembly is also arranged inside the square tube 51, and is used to accurately lock the position of the push assembly. The release drive cylinder 7 is equipped with a release head 71, which can flexibly move along the radial direction of the turntable 1, and act on the positioning assembly in a timely manner to cause it to release the locking state of the push assembly. When the grinding process is completed and the material needs to be unloaded, the release drive cylinder 7 accurately drives the release head 71 to push the positioning assembly to release the push assembly, thereby causing the locking pin 54 and the abutment plate 55 to release the bucket teeth in sequence, creating conditions for the smooth unloading of the bucket teeth.

[0053] like Fig. 9 and Fig.10As shown, the pushing assembly includes an inner push frame 521, an outer push frame 522, a push rod 523 and a connecting rod 524; the inner push frame 521 and the outer push frame 522 are both slidably arranged in the square tube 51 along the length direction of the square tube 51, and the opposite ends of the two locking pins 54 are provided with a locking block 541 located in the square tube 51, and the locking block 541 is provided with a guide column 542, and the inner push frame 521 is provided with a guide groove 5211 extending along the length direction deviating from the square tube 51, and the guide column 542 extends into the guide groove 5211 and slidably cooperates with it; between the outer push frame 522 and the inner push frame 521 An elastic push-up element 525 is provided, and a sliding block 526 that can move along the length direction of the square tube 51 is provided on the push-out frame 522, and the sliding block 526 has a left limit and a right limit in the moving direction; one end of the abutment plate 55 is rotatably connected to the end of the square tube 51, and the other end of the abutment plate 55 is rotatably connected to the sliding block 526 through a connecting rod 524, and a tension spring 56 is also provided between the two abutment plates 55; the push rod 523 is slidably arranged in the square tube 51, and the end of the push rod 523 that is away from the axis of the turntable 1 is connected to the push-out frame 522, and the push rod 523 is connected to the positioning assembly.

[0054] The ends of the two locking pins 54 that are close to each other are provided with locking blocks 541, which are placed in the inner chamber of the square tube 51, and each locking block 541 is equipped with a guide column 542. Correspondingly, a guide groove 5211 is processed on the inner push frame 521, and the extension direction of the guide groove 5211 deviates from the length direction of the square tube 51. The guide column 542 extends to the inside of the guide groove 5211 and forms a close sliding fit relationship with it. When the inner push frame 521 is displaced, the guide column 542 will slide along the guide groove 5211, thereby accurately driving the locking block 541, causing the locking pin 54 to accurately extend or retract in a predetermined direction perpendicular to the locking surface, so as to achieve accurate docking and separation with the bucket tooth pin hole.

[0055] An elastic push element 525 is arranged between the outer push frame 522 and the inner push frame 521, so that the outer push frame 522 and the inner push frame 521 maintain a specific relative position relationship. A sliding block 526 is arranged on the outer push frame 522, and the sliding block 526 can move linearly along the length direction of the square tube 51, and a left limit and a right limit are respectively arranged on its moving path, so as to accurately define the displacement range of the sliding block 526, avoid damage to the mechanism caused by excessive movement, and ensure the accuracy and stability of the action.

[0056] One end of the abutment plate 55 is firmly connected to the end of the square tube 51, forming a lever-like rotation fulcrum. The other end of the abutment plate 55 is connected to the sliding block 526 by means of the connecting rod 524, thereby forming a linkage mechanism. A tension spring 56 is also provided between the two abutment plates 55. The tension spring 56 maintains the stability of the relative position of the two abutment plates 55 by its own tension, ensuring that in the initial state, the abutment plates 55 are in a suitable preparatory position, waiting for subsequent driving actions.

[0057] The push rod 523 is also placed in the square tube 51 in a high-precision sliding fit, and its end away from the axis of the turntable 1 is firmly connected to the push frame 522, so that when subjected to force, the external force can be accurately transmitted to the push frame 522. At the same time, the push rod 523 is also connected to the positioning component, and this connection relationship enables the positioning component to accurately lock the position of the push rod 523, thereby maintaining the overall static state of the pushing component; and when the release condition is met, the positioning component releases the lock on the push rod 523, and the pushing component can resume action, driving the locking pin 54 and the abutment plate 55 to complete the corresponding release action, meeting the requirements of the bucket tooth unloading process.

[0058] like Figure 7 As shown, the surface of the push rod 523 is provided with ratchet grooves 5231 arranged along its length direction; the positioning assembly includes a positioning block 531, a connecting column 532 and a release follower block 533; the positioning block 531 is slidably arranged in the square tube 51 along a direction perpendicular to the square tube 51, and the end of the positioning block 531 facing the push rod 523 is provided with a ratchet 5311 capable of engaging with the ratchet groove 5231, and an elastic abutment element 534 is provided between the positioning block 531 and the inner wall of the square tube 51; the release follower block 533 is slidably arranged on the outer side of the square tube 51 along the sliding direction of the positioning block 531, and the release follower block 533 has an oblique groove capable of facing the release head 71; the connecting column 532 slides through the square tube 51, and the two ends of the connecting column 532 are respectively connected to the positioning block 531 and the release follower block 533.

[0059] The positioning block 531 is slidably installed inside the square tube 51 in a direction perpendicular to the axis of the square tube 51. A plurality of ratchet teeth 5311 are provided at one end of the positioning block 531 facing the push rod 523. These ratchet teeth 5311 can achieve tight and stable meshing with the ratchet grooves 5231 on the surface of the push rod 523, thereby accurately locking the position of the push rod 523. In order to keep the positioning block 531 in a stable position in the square tube 51 and have a certain elastic reset ability, an elastic abutment element 534 is installed between the positioning block 531 and the inner wall of the square tube 51. Through the stable elastic force of the elastic abutment element 534, the positioning block 531 can always maintain the meshing state of the ratchet teeth 5311 and the ratchet grooves 5231 when not disturbed by external forces.

[0060] The release follower block 533 is slidably disposed on the outer wall of the square tube 51 in a manner that is completely consistent with the sliding direction of the positioning block 531. A specially designed inclined groove is provided on the release follower block 533, which ensures that the linear motion of the release head 71 can be converted into the sliding displacement of the release follower block 533 when interacting with the release head 71.

[0061] The two ends of the connecting column 532 are respectively firmly connected to the positioning block 531 and the release follower block 533 through a connecting structure, such as a threaded connection, a pin connection or an interference fit, so as to ensure that when the release follower block 533 is displaced, it can accurately drive the positioning block 531 to move synchronously, thereby achieving precise control and rapid release of the position of the push rod 523.

[0062] like Figure 7 As shown, the push rod 523 is provided with a mounting groove extending along its length direction, and the mounting groove is provided with an abutment rod 527 which slides through the push rod 523, and a limiting ring 5271 is provided at one end of the abutment rod 527 located in the mounting groove, and a pressure plate 5272 which can be pushed by the pushing head 61 is provided at the other end of the abutment rod 527, and an elastic pushing element 529 is provided between the pressure plate 5272 and the push rod 523. The top of the turntable 1 is also provided with an arc strip 528 which can be fixed relative to it, and the arc strip 528 extends along the distribution direction of the grinding stations, and the pressure plate 5272 abuts against the outer wall of the arc strip 528 at the grinding station.

[0063] At one end of the abutment rod 527 located in the installation slot, a limit ring 5271 is firmly installed. This limit ring 5271 effectively limits the maximum displacement of the abutment rod 527 in this direction, preventing the abutment rod 527 from slipping out of the installation slot, and ensuring the stability of the operation of the entire mechanism. The other end of the abutment rod 527 is equipped with a pressure plate 5272. Between the pressure plate 5272 and the push rod 523, an elastic push element 529 is provided. With its stable and predictable elastic force, the pressure plate 5272 maintains a specific initial position under normal conditions.

[0064] The top area of ​​the turntable 1 is provided with an arc bar 528. The arc bar 528 can be firmly fixed relative to the turntable 1. When the device moves to the grinding station, the pressure plate 5272 will abut against the outer wall of the arc bar 528 under a preset mechanical action sequence, and with the help of the stable support and positioning reference provided by the arc bar 528, a thrust is applied to the push rod 523, so as to facilitate the fixing of the bucket teeth by the locking pin 54 and the abutment plate 55, thereby preventing the bucket teeth from shaking during the grinding process.

[0065] like Figure 4 , Figure 5 and Figure 6As shown, a fixed cylinder 511 coaxial with the square tube 51 is arranged on the outer side of the square tube 51, and six rotating seats 11 distributed along the circumference thereof are arranged on the turntable 1. The fixed cylinder 511 is coaxially rotatably arranged on the rotating seat 11, and the rotary driver includes a rotating bevel gear ring 81 and a fixed bevel gear ring 82; the rotating bevel gear ring 81 is coaxially fixedly arranged on the fixed cylinder 511; the fixed bevel gear ring 82 is arranged on the top of the turntable 1 and is coaxial with the turntable 1, and the fixed bevel gear ring 82 is stationary relative to the turntable 1; the rotating bevel gear ring 81 is meshed with the fixed bevel gear ring 82.

[0066] Six rotating seats 11 are evenly arranged on the rotating table 1 and are equidistantly distributed along the circumference thereof. The fixed cylinder 511 is coaxially rotatably mounted on each rotating seat 11 by means of a high-precision rotating support structure.

[0067] The rotating bevel gear ring 81 is coaxially fixed on the fixed cylinder 511. The fixed bevel gear ring 82 is placed on the top of the turntable 1, maintaining a coaxial state with the turntable 1, and by virtue of a specific positioning and fixing method, it is completely still relative to the turntable 1, providing a reliable reference for subsequent stable power transmission.

[0068] The rotating bevel gear ring 81 and the fixed bevel gear ring 82 mesh with each other. When the turntable 1 is running, the rotating bevel gear ring 81 rotates relative to the fixed bevel gear ring 82 by virtue of the mechanical principle of gear meshing, thereby prompting the fixed cylinder 511 together with the square tube 51 to rotate stably around the axis of the turntable 1, thereby satisfying the adjustment of the grinding surface of the bucket teeth when the device switches between different workstations.

[0069] like Fig. 9 As shown, the locking pin 54 is inserted and slidably penetrates the square tube 51 .

[0070] The locking pin 54 is inserted and slidably penetrates the square tube 51 , so that the locking pin 54 is not easy to rotate relative to the square tube 51 , thereby improving the stability of the structure.

[0071] like Fig.10 As shown, the surface of the push-out frame 522 is provided with a left positioning plate 5221 and a right positioning plate 5222, a light rod 5223 is provided between the left positioning plate 5221 and the right positioning plate 5222, a sliding block 526 is slidably provided on the light rod 5223, and an elastic buffer element 5224 facing the sliding block 526 is provided on the right positioning plate 5222.

[0072] A light rod 5223 is arranged across the left positioning plate 5221 and the right positioning plate 5222. The two ends of the light rod 5223 are respectively connected by high-precision threaded connection, interference fit or pin connection to achieve a stable assembly with the left positioning plate 5221 and the right positioning plate 5222, thereby constructing a precise linear guide reference.

[0073] The right positioning plate 5222 is also provided with an elastic buffer element 5224 facing the sliding block 526. It is firmly connected to the right positioning plate 5222, and a suitable free end is reserved at the other end, pointing to the sliding block 526, so that when the sliding block 526 approaches the right positioning plate 5222, a buffering force is applied in time to absorb excess kinetic energy, avoid component damage due to impact, and ensure the stability and reliability of the operation of the entire mechanism.

[0074] like Figure 4 and Figure 5 As shown, the release head 71 is U-shaped and can abut against the inclined surface of the release follower block 533 along the radial direction of the turntable 1 .

[0075] The inner surface of the U-shaped structure of the release head 71 can be smoothly and accurately abutted against the inclined surface of the release follower block 533. When the two are in contact, the radial thrust applied by the release head 71 can be converted into a driving force for the release follower block 533 to slide along its predetermined direction, so as to facilitate the smooth displacement of the release follower block 533, thereby triggering the subsequent unlocking action of the chain, and achieving the preset release operation process of the entire device.

[0076] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. An automatic grinding device for the surface of an excavator bucket tooth, characterized in that: The invention comprises a turntable (1) and four grinding mechanisms (2) arranged outside the turntable (1), wherein the turntable (1) has six workstations distributed along its rotational circumference, wherein four consecutive workstations are grinding workstations, and the remaining two workstations are respectively a loading workstation and an unloading workstation, wherein the grinding mechanism (2) is located at the grinding workstation, a loading mechanism is arranged at the loading workstation, and a unloading mechanism is arranged at the unloading workstation; The grinding mechanism (2) comprises a grinding bracket (21), a multi-angle adjuster, a grinding wheel (23) and a grinding drive motor (24); the grinding bracket (21) is arranged at a grinding station; the multi-angle adjuster is arranged on the grinding bracket (21); the multi-angle adjuster comprises an adjustment portion that can move longitudinally or transversely; the grinding wheel (23) is rotatably arranged on the adjustment portion; and the grinding drive motor (24) is arranged on the grinding bracket (21) and is drivingly connected to the grinding wheel (23); Self-locking clamps (5) are provided on each of the six workstations of the rotary table (1), and the self-locking clamps (5) can be connected to the installation cavity of the bucket tooth; A clamping drive cylinder (6) capable of guiding the clamp head to clamp the bucket teeth is also provided at the loading station; A release drive cylinder (7) capable of guiding the fixture head to release the bucket teeth is also provided at the unloading station; The self-locking clamp (5) is capable of rotating relative to the turntable (1), and the turntable (1) is also provided with a rotation driver for driving the self-locking clamp (5) to flip relative to the turntable (1) before passing through each workstation.

2. The automatic grinding device for the surface of excavator bucket teeth according to claim 1, characterized in that: The multi-angle adjuster also includes a forward screw slide (221), a transverse screw slide (222) and a vertical screw slide (223); The forward screw rod slide (221) is slidably arranged on the grinding bracket (21), and the forward screw rod slide (221) has a forward frame capable of moving radially along the turntable (1); The transverse screw rod slide (222) is arranged on the forward frame, and the transverse screw rod slide (222) has a transverse frame capable of moving in a direction parallel to the tangent of the turntable (1); The vertical screw rod slide (223) is arranged on the transverse moving frame, and the vertical screw rod slide (223) has a vertical moving frame that can move in a vertical direction to form an adjustment part, and the grinding wheel (23) and the grinding drive motor (24) are both arranged on the vertical moving frame.

3. The automatic grinding device for the surface of excavator bucket teeth according to claim 1 or 2, characterized in that: The self-locking clamp (5) also includes a square tube (51), a pushing component and a positioning component; The square tube (51) extends radially along the turntable (1) and is rotatably arranged on six workstations of the turntable (1); a rotary driver is drivingly connected to the square tube (51); one end of the square tube (51) facing away from the axis of the turntable (1) has two symmetrical locking surfaces and two symmetrical abutment surfaces; and one end of the square tube (51) facing the bottom of the inner cavity of the bucket tooth is provided with an abutment column (512); The locking surface has a locking pin (54) that can extend in a direction perpendicular to the locking surface and abut against the bucket tooth pin hole; The abutment surface is provided with an abutment plate (55) which can be deflected relative to the abutment surface after the locking pin (54) is extended to abut against the inner wall of the bucket tooth; The pushing assembly is arranged in the square tube (51) and is drivingly connected to the locking pin (54) and the abutment plate (55); the clamping drive cylinder (6) has a pushing head (61) that can move along the radial direction of the turntable (1) and guide the pushing assembly to move in the square tube (51); when the pushing assembly moves in a direction away from the axis of the turntable (1), the locking pin (54) and the abutment plate (55) are fixed to the bucket teeth in sequence; The positioning assembly is arranged in the square tube (51), and the release drive cylinder (7) has a release head (71) that can move along the radial direction of the turntable (1) and guide the positioning assembly to release the push assembly.

4. The automatic grinding device for the surface of excavator bucket teeth according to claim 3, characterized in that: The pushing assembly comprises an inner pushing frame (521), an outer pushing frame (522), a pushing rod (523) and a connecting rod (524); The inner push frame (521) and the outer push frame (522) are both slidably arranged in the square tube (51) along the length direction of the square tube (51); the opposite ends of the two locking pins (54) are provided with locking blocks (541) located in the square tube (51); the locking blocks (541) are provided with guide columns (542); the inner push frame (521) is provided with a guide groove (5211) extending along the length direction deviating from the square tube (51); the guide column (542) extends into the guide groove (5211) and slidably cooperates with the guide groove; An elastic push-up element (525) is provided between the push-out frame (522) and the push-in frame (521); a sliding block (526) capable of moving along the length direction of the square tube (51) is provided on the push-out frame (522); and the sliding block (526) has a left limit and a right limit in the moving direction; One end of the abutment plate (55) is rotatably connected to the end of the square tube (51), and the other end of the abutment plate (55) is rotatably connected to the sliding block (526) via a connecting rod (524). A tension spring (56) is also provided between the two abutment plates (55); The push rod (523) is slidably disposed in the square tube (51); one end of the push rod (523) that is away from the axis of the turntable (1) is connected to the outer push frame (522); and the push rod (523) is connected to the positioning assembly.

5. The automatic grinding device for the surface of excavator bucket teeth according to claim 4, characterized in that: The surface of the push rod (523) is provided with ratchet grooves (5231) arranged along the length direction thereof; the positioning assembly comprises a positioning block (531), a connecting column (532) and a release follower block (533); The positioning block (531) is slidably disposed in the square tube (51) in a direction perpendicular to the square tube (51); a ratchet tooth (5311) capable of engaging with the ratchet groove (5231) is disposed at one end of the positioning block (531) facing the push rod (523); and an elastic abutment element (534) is disposed between the positioning block (531) and the inner wall of the square tube (51); The release follower block (533) is slidably arranged on the outside of the square tube (51) along the sliding direction of the positioning block (531), and the release follower block (533) has an inclined groove that can face the release head (71); The connecting column (532) slides through the square tube (51), and two ends of the connecting column (532) are respectively connected to the positioning block (531) and the release driven block (533).

6. The automatic grinding device for the surface of excavator bucket teeth according to claim 4, characterized in that: The push rod (523) is provided with a mounting groove extending along its length direction, and the mounting groove is provided with an abutment rod (527) that slides through the push rod (523); a limit ring (5271) is provided at one end of the abutment rod (527) located in the mounting groove; a pressure plate (5272) that can be pushed by the push head (61) is provided at the other end of the abutment rod (527); an elastic pushing element (529) is provided between the pressure plate (5272) and the push rod (523); and an arc strip (528) that can be fixed relative to the top of the turntable (1) is also provided, and the arc strip (528) extends along the distribution direction of the grinding stations, and the pressure plate (5272) abuts against the outer wall of the arc strip (528) at the grinding station.

7. The automatic grinding device for the surface of excavator bucket teeth according to claim 3, characterized in that: A fixed cylinder (511) coaxial with the square tube (51) is arranged outside the square tube (51), six rotating seats (11) distributed along its circumference are arranged on the turntable (1), the fixed cylinder (511) is coaxially rotatably arranged on the rotating seat (11), and the rotary driver comprises a rotating bevel gear ring (81) and a fixed bevel gear ring (82); The rotating bevel gear ring (81) is coaxially fixedly arranged on the fixed cylinder (511); The fixed bevel gear ring (82) is arranged on the top of the turntable (1) and is coaxial with the turntable (1), and the fixed bevel gear ring (82) is stationary relative to the turntable (1); The rotating bevel gear ring (81) is meshed with the fixed bevel gear ring (82).

8. The automatic grinding device for the surface of excavator bucket teeth according to claim 4, characterized in that: The locking pin (54) is fitted and slidably penetrates the square tube (51).

9. The automatic grinding device for the surface of excavator bucket teeth according to claim 4, characterized in that: A left positioning plate (5221) and a right positioning plate (5222) are provided on the surface of the push-out frame (522); a light rod (5223) is provided between the left positioning plate (5221) and the right positioning plate (5222); a sliding block (526) is slidably provided on the light rod (5223); and an elastic buffer element (5224) facing the sliding block (526) is provided on the right positioning plate (5222).

10. The automatic grinding device for the surface of excavator bucket teeth according to claim 5, characterized in that: The release head (71) is U-shaped and can abut against the inclined surface of the release follower block (533) along the radial direction of the turntable (1).

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