Multifunctional accessory of excavator

Abstract

The utility model relates to a multifunctional accessory of an excavator, which comprises a mounting rack, a motor seat and a central joint are arranged in the mounting rack, and a rotary support is connected to the bottom of the mounting rack; the wood grabbing assembly is composed of a middle frame, a wide claw and a narrow claw, the top of the middle frame is connected with the rotary support, the wide claw and the narrow claw are rotationally connected to the two sides of the middle frame respectively, and the wide claw and the narrow claw are connected through a wood grabbing oil cylinder. The utility model relates to the technical field of accessories. According to the multifunctional accessory of the excavator, through the arrangement of the wood sawing assembly, wood can be cut off after the wood grabbing assembly grabs the wood, the accessory can better grab the wood, the wood transferring efficiency is improved, a sawing plate can be rapidly stored after the wood sawing assembly cuts off the wood, damage to the outside by the sawing plate can be avoided, and the practicability is high. And the practicability of the multifunctional accessory can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of attachments, in particular to a multi-functional attachment for an excavator. Background Art

[0002] There are many front attachment working devices for excavators, with a complete range of types. According to statistics, there are about more than twenty kinds, which can be used to cope with various complex working conditions. Among them, there is a log grabber for grabbing wood, which is mainly used to grab wood and bamboo, and it is very fast and convenient for loading and unloading vehicles.

[0003] In the prior art, the existing log grabbing device has a single function and can only perform the grabbing action. When facing long logs, it is weak in grabbing and not conducive to transportation. There are two common ways to solve the transportation problem. One is to use a fixed sawing device for segmented cutting, and the other is to manually hold an oil saw or a chain saw to cut the wood into segments.

[0004] Using a fixed device for cutting occupies a large area and requires the construction of a working site. At the same time, there is also the problem of how to transport long logs to the fixed sawing device, which is very inconvenient. When manually cutting with a hand saw, people usually get tired after cutting several times, reducing work efficiency. Summary of the Utility Model

[0005] In view of the deficiencies in the prior art, the purpose of the present utility model is to provide a multi-functional attachment for an excavator, so as to solve the technical problems mentioned in the above background art.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions:

[0007] A multi-functional attachment for an excavator includes a mounting frame, the top of which is provided with an inclined surface for connecting with the excavator, the inside is provided with a motor base and a center joint, and the bottom is connected with a slewing bearing;

[0008] A log grabbing assembly, which is composed of an intermediate frame, a wide claw and a narrow claw. The top of the intermediate frame is connected with the slewing bearing. The wide claw and the narrow claw are respectively rotatably connected to both sides of the intermediate frame, and the wide claw and the narrow claw are connected by a log grabbing oil cylinder;

[0009] A sawing assembly, which is composed of a base, a clutch assembly, a saw blade, a sawing oil cylinder, a sawing motor and an accumulator. The base includes a connecting frame and a protective cover. The side wall of the connecting frame is fixedly connected with the intermediate frame, and a protective cover is fixedly connected to the side of the connecting frame away from the intermediate frame;

[0010] The accumulator and the sawing motor are both fixedly connected to the connecting frame. The output shaft of the sawing motor extends into the protective cover and is connected with a clutch assembly. One side of the clutch assembly is connected with a saw blade, and the clutch assembly is connected with the inner side wall of the protective cover through a sawing oil cylinder.

[0011] Further, the clutch assembly includes a bottom plate, a saw blade fixing seat, a passive disc, clutch petals and a spring. One side of the bottom plate is rotatably connected to the inner side wall of the protective cover. A connecting portion is formed by a protrusion on the top of the bottom plate away from the sawing oil cylinder and is rotatably connected to the output shaft of the sawing oil cylinder;

[0012] One side of the bottom plate is rotatably connected with a passive disc. A chain groove is formed by an indentation on the outer peripheral side of the passive disc. A circular groove is provided in the middle of the passive disc, and a clutch petal connected to the sawing motor is rotatably arranged. Springs are arranged on the outer peripheral side of the clutch petal.

[0013] Further, the saw blade fixing seat is composed of a limiting block, a screw rod and a tensioning tenon. One side of the limiting block is fixedly connected to the bottom plate. A tensioning groove is formed on the side of the limiting block away from the bottom plate, and a tensioning tenon is slidably connected in the tensioning groove. A screw rod for driving the tensioning tenon to move is rotatably connected in the tensioning groove.

[0014] Further, a lubricating oil box is fixedly connected to the inner side wall of the connecting frame. A tubing fixing plate is connected to the top of the limiting block, and a lubricating oil pipe connected to the lubricating oil box is fixed.

[0015] Further, both the wide claw and the narrow claw are composed of a claw plate, a cross plate and an oil cylinder frame. Claw plates are fixedly connected to both sides of the oil cylinder frame. Cross plates are fixedly connected to the sides of the two claw plates away from the oil cylinder frame. The width of one of the oil cylinder frames is smaller than that of the other oil cylinder frame.

[0016] Further, a limiting rod is detachably connected to the side of the intermediate frame away from the sawing assembly.

[0017] In summary, the utility model includes at least one of the following beneficial technical effects:

[0018] 1. For this multi-functional attachment of an excavator, by providing the sawing assembly, the wood can be cut after the wood-grabbing assembly grabs the wood, so that the attachment can better grab the wood, improving the transfer efficiency of the wood. And after the sawing assembly cuts the wood, the saw blade can be quickly retracted, which can avoid damage to the outside by the saw blade, and can further improve the practicability of the multi-functional attachment;

[0019] 2. The multi-functional attachment for an excavator can lubricate the saw plate and the chain saw through the provided lubricating oil box and lubricating oil pipe, reducing the resistance generated by friction when the sawing assembly cuts wood, thereby reducing the load on the sawing motor and increasing the cutting speed of the chain saw, and effectively improving the cutting efficiency of the wood. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of a multi-functional attachment for an excavator of the present invention.

[0022] Figure 2 It is a schematic structural diagram of the sawing assembly in a multi-functional attachment for an excavator of the present invention.

[0023] Figure 3 It is a schematic internal structural diagram of the connecting frame in a multi-functional attachment for an excavator of the present invention.

[0024] Figure 4 It is a schematic internal structural diagram of the protective cover in a multi-functional attachment for an excavator of the present invention.

[0025] Figure 5 It is a schematic structural diagram of the clutch assembly in a multi-functional attachment for an excavator of the present invention.

[0026] Figure 6 It is a schematic structural diagram of the wide claw in a multi-functional attachment for an excavator of the present invention.

[0027] Figure 7 It is a schematic structural diagram of the narrow claw in a multi-functional attachment for an excavator of the present invention.

[0028] Figure 8 It is a schematic structural diagram when installing the limit rod on a multi-functional attachment for an excavator of the present invention.

[0029] In the figure, 1 is the mounting bracket; 2 is the log-gripping assembly; 21 is the intermediate bracket; 22 is the wide jaw; 23 is the narrow jaw; 3 is the sawing assembly; 31 is the base; 311 is the connecting bracket; 312 is the protective cover; 32 is the clutch assembly; 321 is the bottom plate; 322 is the saw plate fixing seat; 3221 is the limit block; 3222 is the screw; 3223 is the tensioning tenon; 323 is the driven disc; 324 is the clutch flap; 325 is the spring; 33 is the saw plate; 34 is the sawing oil cylinder; 35 is the sawing motor; 36 is the accumulator; 4 is the inclined plane; 5 is the motor seat; 6 is the center joint; 7 is the slewing bearing; 8 is the log-gripping oil cylinder; 9 is the connecting part; 10 is the chain groove; 11 is the round groove; 12 is the tensioning groove; 13 is the lubricating oil box; 14 is the oil pipe fixing plate; 15 is the lubricating oil pipe; 16 is the limit rod; A1 is the jaw plate; A2 is the cross plate; A3 is the oil cylinder bracket. Detailed implementation mode

[0030] The following further describes the present utility model in detail with reference to the accompanying drawings.

[0031] Embodiment:

[0032] Refer to Figure 1 - Figure 8 , a multi-functional attachment for an excavator disclosed by the present utility model includes a mounting bracket 1, on the top of which there is an inclined plane 4 for connecting with the excavator, inside which there is a motor seat 5 and a center joint 6, and at the bottom is connected with a slewing bearing 7;

[0033] The log-gripping assembly 2 is composed of an intermediate bracket 21, a wide jaw 22 and a narrow jaw 23. The top of the intermediate bracket 21 is connected with the slewing bearing 7. The wide jaw 22 and the narrow jaw 23 are respectively rotatably connected to both sides of the intermediate bracket 21. The wide jaw 22 and the narrow jaw 23 are connected by a log-gripping oil cylinder 8;

[0034] The sawing assembly 3 is composed of a base 31, a clutch assembly 32, a saw plate 33, a sawing oil cylinder 34, a sawing motor 35 and an accumulator 36. The base 31 includes a connecting bracket 311 and a protective cover 312. The side wall of the connecting bracket 311 is fixedly connected with the intermediate bracket 21. A protective cover 312 is fixedly connected to the side of the connecting bracket 311 away from the intermediate bracket 21;

[0035] The accumulator 36 and the sawing motor 35 are both fixedly connected to the connecting bracket 311. The output shaft of the sawing motor 35 extends into the protective cover 312 and is connected with a clutch assembly 32. One side of the clutch assembly 32 is connected with a saw plate 33. The clutch assembly 32 and the inner side wall of the protective cover 312 are connected by a sawing oil cylinder 34.

[0036] In this embodiment, before use, the inclined surface 4 of the mounting frame 1 is connected to the boom of the excavator. Subsequently, the excavator provides power to the central joint 6, and then drives the log-grabbing assembly 2 and the sawing assembly 3 through the central joint 6 to realize the operations of grabbing and cutting the wood.

[0037] When in use, power is provided by the excavator. Subsequently, the log-grabbing oil cylinder 8 operates, causing the wide claws 22 and the narrow claws 23 to close and clamp the wood. After the wide claws 22 and the narrow claws 23 clamp the wood, as the pressure continuously increases at the central joint 6, the branch pressure control valve of the sawing assembly 3 opens, enabling the sawing assembly 3 to obtain power. Subsequently, the sawing oil cylinder 34 operates to push out the saw blade 33 to cut the wood.

[0038] Before the saw blade 33 cuts the wood, observe Figure 2 - Figure 4 It can be found that by making the sawing motor 35 in the sawing assembly 3 run at high speed, then driving the clutch assembly 32 to operate under the drive of the sawing motor 35, and then driving the chain saw to rotate through the clutch assembly 32, so that the chain on the outer side wall of the saw blade 33 runs at high speed, the cutting effect on the wood is realized.

[0039] After the chain saw rotates at high speed, pressure is applied through the sawing oil cylinder 34. The sawing oil cylinder 34 pushes the saw blade 33 to extend and contact the wood. Subsequently, under the action of the cutting of the chain saw and the continuous pushing out of the saw blade 33 by the sawing oil cylinder 34, the wood is cut off. Finally, the pressure applied to the sawing oil cylinder 34 is stopped, and the sawing oil cylinder 34 swings back under the action of the accumulator 36, thereby retracting the saw blade 33. The protective cover 312 provides protection for the saw blade 33 to prevent the saw blade 33 from being damaged or causing damage to the outside.

[0040] Finally, after the excavator transports the wood to the designated position, the log-grabbing oil cylinder 8 operates, causing the wide claws 22 and the narrow claws 23 to release the wood to complete the transfer of the wood.

[0041] Since the wood is usually approximately circular, it will cause the wood to roll and slide during transportation, resulting in the wood not being able to maintain flatness, which will affect the grabbing of the wood by the log-grabbing assembly 2. Therefore, observe Figure 1 It can be found that a motor seat 5 is provided in the mounting frame 1. At the same time, a slewing bearing 7 is connected to the top of the mounting frame 1. The motor seat 5 is used to drive the gear in the slewing bearing 7 to rotate, and then the slewing wheel in the slewing bearing 7 rotates through gear transmission to realize the rotation of the log-grabbing assembly 2, making it more convenient to grab the wood.

[0042] In a further preferred embodiment of the present utility model, such as Figure 5As shown, the clutch assembly 32 includes a bottom plate 321, a saw plate fixing seat 322, a driven disc 323, a clutch flap 324 and a spring 325. One side of the bottom plate 321 is rotatably connected to the inner side wall of the protective cover 312. On the top of the bottom plate 321, a connecting portion 9 is formed protruding from the side away from the sawing oil cylinder 34 and is rotatably connected to the output shaft of the sawing oil cylinder 34.

[0043] One side of the bottom plate 321 is rotatably connected to a driven disc 323. A chain groove 10 is formed concavely on the outer peripheral side of the driven disc 323. A circular groove 11 is provided in the middle of the driven disc 323, and a clutch flap 324 connected to the sawing motor 35 is rotatably arranged. A spring 325 is arranged on the outer peripheral side of the clutch flap 324.

[0044] In this embodiment, when the saw plate 33 cuts wood, the chain saw may be stuck by the wood, resulting in an increase in the load of the motor driving the rotation of the chain saw and burning out. Therefore, the driven disc 323 for driving the rotation of the chain saw and the clutch flap 324 for driving the rotation of the driven disc 323 do not directly contact each other, which can avoid the increase in the load of the sawing motor 35 and burning out after the chain saw is stuck.

[0045] Subsequently, observe Figure 5 It can be found that after the clutch assembly 32 rotates, the clutch spring 325 is thrown out in the direction away from the axis under the action of centrifugal force, driving the clutch flap 324 to be thrown outwards. Subsequently, the clutch flap 324 contacts the inner wall of the circular groove 11, causing the clutch flap 324 to frictionally rotate the driven disc 323, and then driving the chain saw to rotate, realizing wood sawing.

[0046] After the wood sawing is completed and the control is released, the rotational speed of the clutch assembly 32 decreases, the clutch spring 325 contracts, and the clutch flap 324 retracts towards the center under the action of the spring 325, stopping frictional contact with the driven disc 323, and the driven disc 323 stops rotating.

[0047] In a further preferred embodiment of the present utility model, as Figure 5 shown, the saw plate fixing seat 322 is composed of a limit block 3221, a screw 3222 and a tensioning tenon 3223. One side of the limit block 3221 is fixedly connected to the bottom plate 321. A tensioning groove 12 is provided on the side of the limit block 3221 away from the bottom plate 321, and a tensioning tenon 3223 is slidably connected therein. A screw 3222 for driving the movement of the tensioning tenon 3223 is rotatably connected in the tensioning groove 12.

[0048] In this embodiment, by providing a limit block 3221, the saw board 33 can be fixed, making the saw board 33 more stable when cutting wood. Meanwhile, a tension groove 12 is provided inside the afternoon underwear, and a tension tenon 3223 is connected in the tension groove 12 through a screw 3222. The chain saw can be tensioned by adjusting the position of the tension tenon 3223 in the tension groove 12, which can prevent the chain saw from being slack and affecting the friction drive of the passive disc 323, and can effectively ensure the efficiency of the saw board 33 in cutting wood.

[0049] In a further preferred embodiment of the present utility model, as Figure 3 - Figure 5 shown, a lubricating oil box 13 is fixedly connected to the inner side wall of the connecting frame 311. The top of the limit block 3221 is connected to an oil pipe fixing plate 14 and is fixed with a lubricating oil pipe 15 connected to the lubricating oil box 13.

[0050] In this embodiment, because the side wall of the chain saw contacts and rubs against the wall of the cutting groove of the wood when the chain saw cuts the wood, it will cause an increase in the resistance when the chain saw rotates, resulting in an increase in the load of the sawing motor 35 and affecting the sawing efficiency. Therefore, observing Figure 3 it can be found that a lubricating oil box 13 is provided inside the connecting frame 311. When the sawing assembly 3 obtains power, the lubricating oil box 13 will operate simultaneously for pumping oil. The top of the lubricating oil box 13 extends into the protective cover 312 through the lubricating oil pipe 15. Then observing Figure 4 and Figure 5 it can be found that an oil pipe fixing plate 14 is connected to the top of the limit block 3221. The outlet of the lubricating oil pipe 15 is fixed to one side of the saw board 33 through the oil pipe fixing plate 14, so that when the lubricating oil is pumped out, it will directly contact the saw board 33 and the chain saw, providing lubrication for the saw board 33 and the chain saw, reducing the friction between the side wall of the chain saw and the wall of the wood cutting groove, and further improving the sawing efficiency.

[0051] By fixedly connecting the oil pipe fixing plate 14 to the limit block 3221, the outlet of the lubricating oil pipe 15 can move together with the saw board 33, so that the lubricating oil box 13 can always provide lubrication for the saw board 33.

[0052] In a further preferred embodiment of the present utility model, as Figure 6 and Figure 7 shown, both the wide claw 22 and the narrow claw 23 are composed of a claw plate A1, a cross plate A2, and an oil cylinder frame A3. Both sides of the oil cylinder frame A3 are fixedly connected with claw plates A1. The cross plate A2 is fixedly connected to one side of the two claw plates A1 away from the oil cylinder frame A3. The width of one of the oil cylinder frames A3 is smaller than the width of the other oil cylinder frame A3.

[0053] In this embodiment, by forming the wide claw 22 and the narrow claw 23 with the claw plate A1, the cross plate A2 and the oil cylinder frame A3, the weights of the wide claw 22 and the narrow claw 23 can be reduced, thereby reducing the weight of the attachment and achieving the effect of reducing the load of the excavator. And observing Figure 6 and Figure 7 it can be found that arc surfaces are provided on the inner sides of the claw plates A1 of the wide claw 22 and the narrow claw 23, which can be used to increase the contact area after the wide claw 22 and the narrow claw 23 grip the wood, so that the gripping of the wood is more stable, and the sawing assembly 3 can reduce the vibration of the wood when cutting the wood, so as to improve the cutting efficiency.

[0054] In a further preferred embodiment of the present utility model, as Figure 7 shown, a limiting rod 16 is detachably connected to a side of the intermediate frame 21 away from the sawing assembly 3.

[0055] In this embodiment, during the process of cutting the wood segments, sometimes it is necessary to limit the cutting length. Therefore, in order to enable the sawing assembly 3 to cut the wood better and make the cut wood more in line with the length requirements, a limiting rod 16 is provided on a side of the intermediate frame 21 away from the driving side of the sawing assembly 3, which can be used for the operator to observe the cutting length of the wood, and can further improve the practicability of the attachment.

[0056] When the required lengths of the wood are different, the position of the limiting rod 16 needs to be adjusted multiple times. Therefore, the position between the limiting rod 16 and the intermediate frame 21 cannot be fixed. So, the limiting rod 16 and the intermediate frame 21 can be detachably connected by means of plugging, clamping, etc., so that the limiting rod 16 can more flexibly adjust the extended length to adapt to the cutting of woods with different lengths.

[0057] The embodiments of this specific implementation manner are all preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A multifunctional attachment for an excavator, characterized in that: It comprises a mounting frame (1), the top of which is provided with an inclined surface (4) for connecting with an excavator, the interior of which is provided with a motor seat (5) and a center joint (6), and the bottom of which is connected with a slewing support (7); A wood grabbing assembly (2) is composed of an intermediate frame (21), a wide claw (22) and a narrow claw (23), wherein the top of the intermediate frame (21) is connected to the slewing support (7), and the two sides of the intermediate frame (21) are rotatably connected to the wide claw (22) and the narrow claw (23), and the wide claw (22) and the narrow claw (23) are connected via a wood grabbing oil cylinder (8); A sawing assembly (3), which is composed of a base (31), a clutch assembly (32), a sawing board (33), a sawing cylinder (34), a sawing motor (35) and an accumulator (36), wherein the base (31) comprises a connecting frame (311) and a protective cover (312), the side wall of the connecting frame (311) is fixedly connected to the intermediate frame (21), and the side of the connecting frame (311) away from the intermediate frame (21) is fixedly connected to the protective cover (312); The accumulator (36) and the sawing motor (35) are both fixedly connected to the connecting frame (311); the output shaft of the sawing motor (35) extends into the protective cover (312) and is connected to a clutch assembly (32); one side of the clutch assembly (32) is connected to a saw plate (33); the clutch assembly (32) is connected to the inner side wall of the protective cover (312) via a sawing cylinder (34).

2. The multifunctional attachment for excavators according to claim 1, characterized in that: The clutch assembly (32) comprises a bottom plate (321), a saw plate fixing seat (322), a passive plate (323), a clutch flap (324) and a spring (325); one side of the bottom plate (321) is rotatably connected to the inner side wall of the protective cover (312); a top of the bottom plate (321) is protruded away from the sawing oil cylinder (34) to form a connecting portion (9), and is rotatably connected to the output shaft of the sawing oil cylinder (34); A passive disk (323) is rotatably connected to one side of the bottom plate (321), and a chain groove (10) is formed inwardly on the outer peripheral side of the passive disk (323). A circular groove (11) is provided in the middle of the passive disk (323), and a clutch flap (324) connected to the sawing motor (35) is rotatably provided thereon, and a spring (325) is provided on the outer peripheral side of the clutch flap (324).

3. The multifunctional attachment for excavators according to claim 2, characterized in that: The saw plate fixing seat (322) is composed of a limit block (3221), a screw rod (3222) and a tensioning tenon (3223); one side of the limit block (3221) is fixedly connected to the base plate (321); a tensioning groove (12) is provided on a side of the limit block (3221) away from the base plate (321) and is slidably connected to the tensioning tenon (3223); a screw rod (3222) is rotatably connected in the tensioning groove (12) for driving the tensioning tenon (3223) to move.

4. The multifunctional attachment for excavators according to claim 3, characterized in that: The inner side wall of the connecting frame (311) is fixedly connected to a lubricating oil box (13), and the top of the limiting block (3221) is connected to an oil pipe fixing plate (14) and fixed with a lubricating oil pipe (15) connected to the lubricating oil box (13).

5. The multifunctional attachment for excavators according to claim 1, characterized in that: The wide claw (22) and the narrow claw (23) are both composed of a claw plate (A1), a transverse plate (A2) and a cylinder frame (A3); the claw plates (A1) are fixedly connected to both sides of the cylinder frame (A3); the transverse plate (A2) is fixedly connected to one side of the two claw plates (A1) away from the cylinder frame (A3); and the width of one of the cylinder frames (A3) is smaller than the width of the other cylinder frame (A3).

6. The multifunctional attachment for excavators according to claim 1, characterized in that: The side of the intermediate frame (21) away from the wood sawing assembly (3) is detachably connected to a limiting rod (16).

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