A mechanical or automated universal excavator bucket tooth quick assembly and disassembly tool

Abstract

The utility model relates to a mechanical or automated universal excavator bucket tooth quick assembly and disassembly tool, belonging to the field of mechanical technology. The structure of the utility model includes a jacking device and a driving device for driving the jacking device, and the jacking device is connected to a fixing device for connecting to the bucket plate of the bucket tooth. The utility model is ingeniously designed, and its beneficial effects are to achieve the requirements of automated assembly and disassembly, ensure the reliability of the pin assembly and disassembly, have low strength, improve assembly and disassembly efficiency, and reduce the work intensity of workers, and can be used as the preferred standard tool on the construction site.

Description

Technical Field

[0001] The utility model relates to a mechanical or automated universal excavator bucket tooth quick assembly and disassembly tool, belonging to the technical field of machinery. Background Art

[0002] As one of the most important construction machinery for multi-purpose earthwork projects, the front bucket teeth of excavators are the core parts of the excavator. Different types of buckets are adapted to different working conditions and construction requirements and need to be replaced frequently. As the vulnerable parts of the bucket, the bucket teeth are subject to rapid impact wear during construction. In order to complete the work efficiently and reliably, the bucket teeth need to be replaced frequently. The tooth seat and bucket teeth are often connected by pins of different diameters or lengths. According to market research, each brand of bucket uses about a dozen diameters and lengths of pins, the spacing between bucket teeth is equivalent to the length of the pins, and the bucket thickness range is fixed. In order to reduce the frequent replacement and configuration of bucket tooth assembly and disassembly tools used for buckets of different specifications and increase the versatility of bucket tooth assembly and disassembly tools, it is essential to design a universal and quick-assembly bucket tooth tool.

[0003] At present, most of the tools used on construction sites are knocking or simple assembly and disassembly tools. Due to the narrow space of bucket teeth and difficulty in precise operation, there are safety hazards and low efficiency. At the same time, the simple assembly and disassembly tools applied by the applicant have shortcomings such as low assembly and disassembly efficiency and low versatility in actual use. Utility Model Content

[0004] The purpose of the utility model is to provide a universal and efficient assembly and disassembly tool to adapt to different working conditions and specialized tools for construction requirements, so as to achieve the purpose of easily assembling and disassembling different buckets with one tool, in view of the problems of poor efficiency and versatility in the prior art of disassembling and assembling excavator bucket teeth.

[0005] In order to achieve the above objectives, the utility model provides a mechanical or automated universal excavator bucket tooth quick assembly and disassembly tool, including a pushing device and a driving device for driving the pushing device, wherein the pushing device is connected to a fixing device for connecting to a bucket plate of the bucket tooth.

[0006] Furthermore, the fixing device includes a universal joint, a fixing bracket accommodating the universal joint, and a handle screw passing through the universal joint and the fixing bracket. The universal joint is provided with four symmetrical M12 threaded holes, into which adjustable tightening handle screws are screwed, and the fixing of the tooling and the bucket plate is achieved by adjusting the screwing length and torque of the tightening handle screws.

[0007] The lower end of the fixed bracket is sleeved with the pushing device. The lower end of the fixed bracket is a bent clamping plate. A centering through hole is provided in the middle of the clamping plate. A friction-reducing sleeve is installed in the centering through hole to reduce friction during the rotation and pushing process.

[0008] The pushing device comprises a pushing pin shaft located at one end of the device, a shaft shoulder fixed in the middle of the device and movably sleeved with a fixed bracket, and a pushing bolt connected to the other end of the device. The pushing pin shaft realizes the centering and pushing functions, and the other end of the device is designed with an internal thread, into which M16 bolts of different lengths are screwed, and the installation and disassembly of the bucket tooth pin shaft is controlled and pushed by the screwing depth of the bolts, and the middle fixed shaft shoulder is movably sleeved with the universal joint of the fixing device to realize the fixing and pushing of the device.

[0009] The driving device comprises a mechanical wrench or an automatic wrench connected to the pushing device.

[0010] The top of the mechanical wrench is fixed to the shoulder of the push pin shaft, and the bucket tooth pin shaft can be assembled and disassembled by screwing in and out the welded wrench and the M16 bolt on the push device.

[0011] The automatic wrench comprises a motor mounting plate mounted on the shaft shoulder, a motor and a motor gear fixed on the motor mounting plate, a single-chip program control module installed on a fixing device and electrically connected to the motor, and the motor gear is meshed with a push pin shaft. By fixing the M16 bolt at the right end, the automatic program module drives the motor and gear transmission to realize the automatic push function of the push device, and at the same time, different gear combinations and special driver programs are selected according to different specifications of bucket teeth to realize the automatic assembly and disassembly of bucket tooth pin shafts of different specifications.

[0012] The outer ends of the jacking bolt and the jacking pin shaft respectively contact the bucket tooth pin shaft between the bucket teeth of the excavator.

[0013] The universal joint contacts the bucket plate.

[0014] The utility model has three major functional areas. The distance between the splints is set according to the bucket thickness range at one end of the universal joint of the fixing device in the first functional area, and the screwing depth is used to adapt to different thickness requirements. At the same time, the selection of adjustable tightening handle screws can realize manual fixing and loosening, and the selection of standard parts greatly reduces the tooling cost. The pushing shaft of the pushing device in the second functional area is designed into two universal diameter pushing shafts with more than ten specifications of pins to better adapt to the force size of pins of different specifications. The shaft is a key pushing structure, and its strength, hardness and surface wear resistance requirements are relatively high. It is usually made of 45# steel; the other end is designed with M16 internal thread, and the thread depth and the length of the M16 bolt are adapted to different bucket tooth spacing requirements. In order to meet the requirements of large-size bucket tooth pins and long bucket tooth spacing, 8.8-grade high-strength bolts can be selected; the intermediate shaft shoulder is connected with the universal joint of the fixing device, and the surface is wear-resistant and the roughness requirements are slightly higher, which improves the tooling efficiency. The driving device of the third functional area has two structures: traditional mechanical and automated. In the first mechanical structure, a fixed wrench is welded at the intermediate shaft shoulder to achieve the fixing effect of the relative torque of the pushing device; in the other automated form, a motor mounting plate (installed on the pushing device by extending the friction-reducing sleeve) and a pushing gear (integrated with the pushing device) can be installed on the shaft shoulder of the pushing device, and the motor and motor gear can be installed on the motor mounting plate. The motor gear drives the pushing device to rotate through the pushing gear, thereby realizing the assembly and disassembly function of the pin shaft.

[0015] The utility model is ingeniously conceived and has the beneficial effects of achieving the requirements of automated assembly and disassembly, ensuring the reliability of pin assembly and disassembly, having low strength, improving assembly and disassembly efficiency, and reducing the workload of workers. It can be used as the preferred standard tool at the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a structural schematic diagram of three functional areas of the utility model.

[0018] Figure 2 It is a structural schematic diagram of an embodiment of the utility model.

[0019] Figure 3 It is a structural schematic diagram of another embodiment of the utility model. DETAILED DESCRIPTION

[0020] The basic structure of the mechanical or automated universal excavator bucket tooth quick assembly and disassembly tooling in the following embodiments is as follows: Figure 1As shown, it includes a universal joint 1 and an adjustable locking handle screw 2 fixed to the bucket plate in the first functional area, a push pin shaft 3 in the second functional area, and a driving wrench 4 in the third functional area. The universal joint 1 in the first functional area is designed according to the thickness of all bucket plates, bucket tooth spacing and the measured bucket tooth assembly and disassembly torque. The push pin shaft 3 of the push device in the second functional area is designed according to the size, length, bucket tooth spacing and the measured bucket tooth assembly and disassembly torque of all pin shafts investigated. Two specifications of pin shaft diameters are designed to meet the disassembly and assembly needs of all bucket tooth pin shafts. The right end bolt is designed with a standard M16 high-strength bolt 5, and the bolt length is determined according to the bucket tooth spacing. The driving device 4 in the third functional area can be designed in two ways, one is a traditional mechanical wrench design, the wrench is welded and fixed to the end of the shaft shoulder 3-4, and the other is a gear fixed to the end of the shaft shoulder 3-4, and the motor gear is driven by a preset program, and the push pin shaft is driven in and out by the gear combination to realize the assembly and disassembly of the bucket tooth pin shaft. The driving device of the utility model has two structural forms, see the following embodiments for details. Example 1

[0021] The structure of this embodiment is as follows Figure 2 As shown, the pin removal process is as follows: screw one end of the universal joint 1 into the adjustable locking handle screw 2, and knock the other end into the friction reduction sleeve 1-3; insert the push shoulder 3-4 into the universal joint 1 with the friction reduction sleeve 1-3 installed, so that it can easily rotate and slide left and right after being inserted, and screw in a certain length of M16 push bolt 2-2 at the other end; adjust the screw-in depth of the M16 push bolt 2-2, and the screw-in depth should be appropriate to put it between the bucket teeth, put the tooling as a whole between the bucket teeth, align the push pin shaft 3 with the center of the pin shaft to be removed, and the head of the M16 push bolt 2-2 presses against the end of the bucket tooth; symmetrically adjust the adjustable locking handle screw 1-2 to fix the tooling on the bucket plate 6.

[0022] Adjust the handle angle of the drive wrench 4, screw out the M16 push bolt 2-2 until it cannot be screwed out, put the open-end wrench into the hexagonal head of the M16 push bolt 2-2, adjust the relative position of the drive wrench 4 and the open-end wrench to a convenient angle, hold the drive wrench 4 and the open-end wrench with both hands, and rotate the two wrenches in the direction of screwing out the M16 push bolt 2-2. The force is relatively large at first, and the two wrenches are continued to be rotated after they are slightly loosened, and the open-end wrench is withdrawn when it is inconvenient to use force; at this time, you can try to screw out the M16 push bolt 2-2 directly manually. If it cannot be screwed out manually, continue to insert the open-end wrench to the appropriate angle of the M16 push bolt 2-2, and repeat the screwing operation until the bucket tooth pin is removed. Withdraw the open-end wrench, screw in the M16 push bolt 2-2 manually, and remove the tooling as a whole, and the pin shaft is successfully removed.

[0023] The pin installation process is as follows: connect the bucket teeth and the excavator bucket through the pin until the pin can not be pressed; put the pre-assembled tooling as a whole between the bucket teeth, align the push pin shaft 3 with the center of the pin to be installed, and the head of the M16 push bolt 2-2 against the end of the bucket tooth; symmetrically adjust the adjustable locking handle screw 2 to fix the tooling on the bucket plate 6.

[0024] Adjust the handle angle of the drive wrench 4, manually screw out the M16 push bolt 2-2 until it cannot be screwed, put the open-end wrench into the hexagonal head of the M16 push bolt 2-2, and adjust the relative positions of the drive wrench 4 and the open-end wrench to a convenient angle for force. Hold the drive wrench 4 and the open-end wrench with both hands respectively, and rotate the two wrenches in the direction of screwing out the M16 push bolt 2-2. As the screwing depth increases, the pin becomes tighter and tighter, and the tightening force becomes greater and greater. When the bucket tooth pin is almost flush with the bucket tooth, move the tooling appropriately so that the push pin shaft 3 is partially exposed outside the bucket tooth pin. At this time, continue to screw out the M16 push bolt 2-2 until it cannot be screwed (the bucket tooth pin is just flush with the bucket tooth); at this time, slightly screw in the M16 push bolt 2-2, and move out the tooling as a whole to complete the smooth installation of the pin. Example 2

[0025] The structure of this embodiment is as follows Figure 3 As shown, this embodiment adopts the form of motor gear automatic drive. The pin shaft removal process is as follows: screw one end of the universal joint 1 into the adjustable set handle screw 2, and knock the other end into the friction reduction sleeve 1-3; at this time, align the pre-assembled top push pin shaft 3 (with the motor mounting plate 3-2, drive gear 3-1, motor output gear combination and drive module 3-3 installed) with the center of the pin shaft to be removed; symmetrically adjust the adjustable set handle screw 2 to fix the tooling on the bucket plate 6. The above-mentioned drive module is commercially available and will not be repeated.

[0026] Turn on the start switch of the motor drive module located on the fixing device to start the motor to drive the gear combination to drive the pushing device until the preset program of the motor drive module is executed (the force is the largest when the pin shaft is just removed), turn off the motor drive module, and take out the tooling as a whole to complete the successful removal of the pin shaft.

[0027] The pin installation process is as follows: connect the bucket tooth and the excavator bucket through the pin until the pin can not be pressed. At this time, put the pre-assembled tooling as a whole between the bucket tooth and the pin, align the push pin shaft 3 with the shaft pin to be installed on the excavator bucket tooth, turn on the start switch of the motor drive module on the fixing device, and start the motor to drive the gear combination to drive the push device; as the screwing depth increases, the pin becomes tighter and tighter. When the bucket tooth pin shaft is almost flush with the bucket tooth, turn off the drive switch, move the tooling appropriately, so that the push pin shaft 3 is partially exposed outside the bucket tooth pin shaft, and start the motor drive module again until the bucket tooth pin shaft is just flush with the bucket tooth (move to the bucket tooth end face and stop at the limit), then turn off the motor drive module, and move the tooling out as a whole to complete the successful installation of the pin shaft.

[0028] The above embodiments use special assembly and disassembly tools to meet the needs of bucket tooth pins of different specifications, greatly reduce the labor intensity of workers, ensure assembly and disassembly reliability, and significantly improve production efficiency.

[0029] In addition to the above embodiments, the present invention may also have other implementations. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.

Claims

1. A mechanical or automated universal excavator bucket tooth quick assembly and disassembly tool, comprising a pushing device and a driving device for driving the pushing device, characterized in that: The pushing device is connected to a fixing device for connecting with a bucket plate of a bucket tooth, and the fixing device comprises a universal joint, a fixing bracket for accommodating the universal joint, and a handle screw passing through the universal joint and the fixing bracket.

2. The mechanical or automated universal excavator bucket tooth quick assembly and disassembly tool as claimed in claim 1, characterized in that: The lower end of the fixed bracket is sleeved with the pushing device, and the lower end of the fixed bracket is a bent clamping plate, a centering through hole is provided in the middle of the clamping plate, and a friction reducing sleeve is installed in the centering through hole.

3. The mechanical or automated universal excavator bucket tooth quick assembly and disassembly tool as claimed in claim 2, characterized in that: The pushing device comprises a pushing pin shaft located at one end of the device, a shaft shoulder fixed in the middle of the device and movably sleeved with a fixed bracket, and a pushing bolt connected to the other end of the device.

4. The mechanical or automated universal excavator bucket tooth quick assembly and disassembly tool as claimed in claim 3, characterized in that: The driving device comprises a mechanical wrench or an automatic wrench connected to the pushing device.

5. The mechanical or automated universal excavator bucket tooth quick assembly and disassembly tool as claimed in claim 4, characterized in that: The top of the mechanical wrench is fixed to the shoulder of the push pin shaft.

6. The mechanical or automated universal excavator bucket tooth quick assembly and disassembly tool as claimed in claim 4, characterized in that: The automatic wrench comprises a motor mounting plate sleeved on the shaft shoulder, a motor and a motor gear fixed on the motor mounting plate, and a single-chip microcomputer program control module installed on a fixing device and electrically connected to the motor, wherein the motor gear meshes with a push pin shaft.

7. The mechanical or automated universal excavator bucket tooth quick assembly and disassembly tool as claimed in claim 3, characterized in that: The outer ends of the jacking bolt and the jacking pin shaft respectively contact the bucket tooth pin shaft between the bucket teeth of the excavator.

8. The mechanical or automated universal excavator bucket tooth quick assembly and disassembly tool as claimed in claim 1, characterized in that: The universal joint contacts the bucket plate.

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