An improved excavator rake head

By designing an improved excavator rake head, and utilizing a turntable mechanism and mounting mechanism to achieve multi-dimensional adjustment of excavation direction and angle, the problem of low efficiency of existing excavators in tasks such as slope trenching has been solved, and the adaptability and efficiency of the work have been improved.

CN224431516UActive Publication Date: 2026-06-30GUANGZHOU CHUNLIN GREENING ENGINEERING CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGZHOU CHUNLIN GREENING ENGINEERING CO LTD
Filing Date
2025-07-08
Publication Date
2026-06-30

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Abstract

This utility model discloses an improved excavator rake head, including a mounting mechanism, a turntable mechanism, and a digging mechanism. The first connecting part of the mounting mechanism is rotatably connected to the end of the excavator's stick, and the second connecting part is rotatably connected to a connecting rod connected to the excavator's bucket cylinder. When the bucket cylinder is working, the connecting rod drives the mounting mechanism to rotate around the first connecting part on a first plane. The digging mechanism includes a mounting platform and a rake head body. The turntable mechanism drives the digging mechanism to rotate circumferentially along a second plane. The first and second planes are perpendicular to each other. The turntable mechanism enables the rake head body to rotate 360° on the second plane, and the connecting rod drives the mounting mechanism to perform a rotating action around the first connecting part on the first plane, ensuring that various special digging tasks and excavation work can be completed quickly, efficiently, and conveniently.
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Description

Technical Field

[0001] This utility model relates to the field of excavator parts technology, specifically to an improved excavator rake head. Background Technology

[0002] Excavators, also known as excavating machinery or diggers, are heavy machines used in earthmoving projects. They are widely used in construction, mining, road construction, and other fields. They can excavate to different depths and widths and are mainly used for excavating soil, coal, silt, and rock.

[0003] Currently, excavators in existing technology typically excavate soil and other loose materials using a bucket. However, when performing certain specific tasks, such as slope trenching, existing buckets are not only inefficient but also extremely inconvenient to operate. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides an improved excavator rake head to solve the problems in the existing technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An improved excavator rake head includes:

[0007] The mounting mechanism has a first connecting part and a second connecting part at its upper end; wherein, the first connecting part is used to rotatably connect with the end of the excavator's stick, and the second connecting part is used to rotatably connect with the connecting rod connected to the excavator's bucket cylinder, so that when the bucket cylinder is working, the mounting mechanism is driven to rotate around the first connecting part on a first plane through the connecting rod.

[0008] A turntable mechanism is connected to the lower end of the mounting mechanism;

[0009] The excavating mechanism includes a mounting platform and a rake head body. The rake head body is mounted on the mounting platform, which is connected to a turntable mechanism for transmission. The turntable mechanism is used to drive the excavating mechanism to rotate circumferentially along a second plane. The first plane is perpendicular to the second plane.

[0010] In one embodiment, the turntable mechanism includes:

[0011] The turntable body is fixedly connected to the mounting mechanism;

[0012] A driving component is mounted on the turntable body. The driving end of the driving component is connected to the mounting platform for transmission. The driving component is used to drive the mounting platform to rotate, thereby causing the rake head body to rotate circumferentially along the turntable body.

[0013] In one embodiment, the driving end of the driving member is coaxially arranged with the axis of the turntable body.

[0014] In one embodiment, the driving end of the driving component is perpendicular to the mounting platform, and the driving end of the driving component is on the same straight line as the center point of the mounting platform.

[0015] In one embodiment, the rake head body includes a support member and a plurality of rake teeth, the support member being connected to the turntable mechanism via the mounting platform, and the plurality of rake teeth being mounted on the support member.

[0016] In one embodiment, two clamping plates are provided below the installation platform, and the support member is disposed between the two clamping plates.

[0017] In one embodiment, the rake teeth are welded to the support member, and the support member is welded to the mounting platform and the two clamping plates.

[0018] In one embodiment, a plurality of the rake teeth are arranged in a spaced array, and each rake tooth has a working surface; wherein, the side opposite to the working surface is provided with a reinforcing rib.

[0019] In one embodiment, the rake teeth are detachably connected to the support member.

[0020] In one embodiment, the rake teeth include:

[0021] First tooth body;

[0022] The second tooth body, together with the first tooth body, forms a mounting opening, and the rake tooth is connected to the support member through the mounting opening;

[0023] The connecting mechanism includes a first connector and a second connector, wherein the first connector is used to connect the first tooth and the second tooth, and the second connector is used to mount the first tooth and the second tooth on the support.

[0024] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0025] The digging mechanism is installed at the lower end of the mounting mechanism via a turntable mechanism. The turntable mechanism enables the rake head to rotate 360° on the second plane, ensuring that the digging direction and angle can be adjusted according to actual working needs, thus providing work adaptability. The first connecting part of the mounting mechanism is rotatably connected to the end of the excavator's stick, and the second connecting part of the mounting mechanism is rotatably connected to the connecting rod of the excavator's bucket cylinder. This allows the mounting mechanism to perform a flipping action around the first connecting part on the first plane under the drive of the bucket cylinder. Since the first and second planes are set perpendicularly, the rake head can adjust the digging direction and angle in different dimensions during operation, further improving its work adaptability and enabling it to quickly, efficiently, and conveniently complete various special digging tasks and excavation work. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an improved excavator rake head according to one embodiment of the present invention;

[0027] Figure 2 for Figure 1 A three-dimensional structural diagram of the improved excavator rake head;

[0028] Figure 3 for Figure 1 A side view of the improved rake head of an excavator.

[0029] Figure 4 This is a schematic diagram of the structure of another improved excavator rake head according to one embodiment of the present utility model;

[0030] Figure 5 for Figure 4 A schematic diagram of the structure of the rake teeth;

[0031] In the diagram: 1. Mounting mechanism; 11. First connecting part; 12. Second connecting part;

[0032] 2. Turntable mechanism; 21. Turntable body; 22. Drive component;

[0033] 3. Excavation mechanism; 31. Installation platform; 311. Clamping plate; 32. Rake head body; 321. Support component; 322. Rake teeth; 3221. Working face; 3222. Reinforcing rib; 323. First tooth; 324. Second tooth; 325. Installation port. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] like Figures 1 to 4 As shown, the present invention provides an improved excavator rake head, comprising:

[0036] The mounting mechanism 1 has a first connecting part 11 and a second connecting part 12 at its upper end. The first connecting part 11 is used to rotatably connect with the end of the excavator's stick, and the second connecting part 12 is used to rotatably connect with the connecting rod connected to the excavator's bucket cylinder. When the bucket cylinder is working, the connecting rod drives the mounting mechanism 1 to rotate around the first connecting part 11 on a first plane. The first connecting part 11 and the second connecting part 12 are located on the same side of the mounting mechanism 1.

[0037] Turntable mechanism 2 is connected to the lower end of mounting mechanism 1;

[0038] The excavating mechanism 3 includes a mounting platform 31 and a rake head body 32. The rake head body 32 is mounted on the mounting platform 31. The mounting platform 31 is connected to the turntable mechanism 2 for transmission. The turntable mechanism 2 is used to drive the excavating mechanism 3 to rotate circumferentially along the second plane. The first plane is perpendicular to the second plane.

[0039] In this embodiment, the digging mechanism 3 is installed at the lower end of the mounting mechanism 1 via the turntable mechanism 2. The turntable mechanism 2 enables the rake head body 32 to rotate 360° on the second plane, ensuring that the rake head body 32 can adjust the digging direction and angle according to actual working needs, thus providing work adaptability. The first connecting part 11 of the mounting mechanism 1 is rotatably connected to the end of the excavator's stick, and the second connecting part 12 of the mounting mechanism 1 is rotatably connected to the connecting rod connected to the excavator's bucket cylinder. This allows the mounting mechanism 1 to perform a flipping action around the first connecting part 11 on the first plane under the drive of the bucket cylinder. Since the first and second planes are set perpendicularly, the rake head body 32 can adjust the digging direction and angle in different dimensions during operation, further improving its work adaptability and enabling it to quickly, efficiently, and conveniently complete various special digging tasks and digging work (such as slope trenching).

[0040] like Figures 1 to 4 As shown, in one embodiment, the turntable mechanism 2 includes:

[0041] The turntable body 21 is fixedly connected to the mounting mechanism 1;

[0042] The drive component 22 is installed on the turntable body 21. The drive end of the drive component 22 is connected to the mounting platform 31 for transmission. The drive component 22 is used to drive the mounting platform 31 to rotate, so as to drive the rake head body 32 to rotate around the turntable body 21.

[0043] In this embodiment, by mounting the drive component 22 on the turntable body 21, the working stability of the drive component 22 is ensured. The drive end of the drive component 22 is connected to the mounting platform 31 through transmission, so that when the drive component 22 is working, it drives the mounting platform 31 to rotate and drives the rake head body 32 to rotate circumferentially along the turntable body 21 on the second plane, so that the rake head body 32 can rotate 360° on the second plane, thereby improving the work adaptability and working stability.

[0044] It should be understood that the turntable body 21 has a groove on its end face near the mounting platform 31, and a bearing is installed in the groove. The turntable body 21 is bolted to the outer ring of the bearing, and the mounting platform 31 is bolted to the inner ring of the bearing. The drive component 22 is a motor, and a gear is installed on the drive end of the motor. The mounting platform 31 is provided with a transmission part, which has a groove. The inner wall of the groove is provided with internal teeth that mesh with the gear. Thus, when the drive component 22 is working, the gear on the drive end of the drive component 22 drives the mounting platform 31 to rotate. The bearing can be a slewing bearing.

[0045] like Figures 1 to 4 As shown, in one embodiment, the driving end of the drive member 22 is coaxially arranged with the axis of the turntable body 21.

[0046] In this embodiment, by coaxially setting the driving end of the driving component 22 with the axis of the turntable body 21, the force-bearing part of the turntable body 21 is ensured to be in the center position, thereby improving the overall strength and ensuring the working stability of the rake head body 32 when it rotates.

[0047] like Figures 1 to 4 As shown, in one embodiment, the driving end of the driving member 22 is perpendicular to the mounting platform 31, and the driving end of the driving member 22 and the center point of the mounting platform 31 are on the same straight line.

[0048] In this embodiment, by setting the driving end of the driving component 22 perpendicular to the mounting platform 31, and ensuring that the driving end of the driving component 22 and the center point of the mounting platform 31 are on the same straight line, the driving end of the driving component 22 is located at the center of the mounting platform 31, thus ensuring the working stability of the rake head body 32 when it rotates.

[0049] like Figures 1 to 4 As shown, in one embodiment, the rake head body 32 is located directly below the turntable mechanism 2 and the mounting platform 31;

[0050] In this embodiment, since there is only one rake head body 32, by placing the rake head body 32 directly below the turntable mechanism 2 and the mounting platform 31, the working stability of the rake head body 32 when rotating can be further guaranteed.

[0051] like Figure 1 As shown, in one embodiment, the rake head body 32 includes a support member 321 and a plurality of rake teeth 322. The support member 321 is connected to the turntable mechanism 2 through the mounting platform 31, and the plurality of rake teeth 322 are mounted on the support member 321.

[0052] In this embodiment, by installing a number of rake teeth 322 on the support member 321 and installing the support member 321 on the installation platform 31, a connection with the turntable mechanism 2 is achieved. This ensures that when the turntable mechanism 2 drives the installation platform 31 to work, the support member 321 is driven so that all the rake teeth 322 on the support member 321 can move in unison, thereby improving the overall strength.

[0053] like Figures 1 to 4 As shown, in one embodiment, two clamping plates 311 are provided below the mounting platform 31, and a support member 321 is disposed between the two clamping plates 311.

[0054] In this embodiment, by placing the support member 321 between the two clamping plates 311, the connection stability between the support member 321 and the mounting platform 31 is enhanced, the overall strength is improved, and the working stability is guaranteed.

[0055] like Figures 1 to 3 As shown, in one embodiment, the rake teeth 322 are welded to the support member 321, and the support member 321 is welded to the mounting platform 31 and the two clamping plates 311.

[0056] In this embodiment, the rake teeth 322 and the support member 321 are fixedly connected by welding, thereby achieving an integrated design of the rake teeth 322 and the support member 321, ensuring the integrated effect of the rake head body 32, and improving the overall strength of the rake head body 32. The integrated design of the rake teeth 322 further enhances the overall strength.

[0057] If necessary, the support 321 can be fixedly connected to the mounting platform 31 and the two clamping plates 311 by fasteners.

[0058] like Figure 3 As shown, in one embodiment, a plurality of rake teeth 322 are arranged in an array at intervals, and each rake tooth 322 is provided with a working surface 3221; wherein, the side opposite to the working surface 3221 is provided with a reinforcing rib 3222.

[0059] In this embodiment, by arranging multiple rake teeth 322 in an array at intervals and by providing reinforcing ribs 3222 on the side opposite to the working surface 3221, the overall working strength of the rake teeth 322 is further improved and the service life is extended.

[0060] like Figures 4 to 5 As shown, in one embodiment, the rake teeth 322 are detachably connected to the support member 321.

[0061] In this embodiment, the rake teeth 322 are detachably connected to the support member 321 using fasteners, which effectively avoids the need to replace the entire rake head body 32 when individual rake teeth 322 are damaged, thus reducing replacement costs. Correspondingly, the support member 321 and the mounting platform 31 can also be detachably connected using fasteners for easy installation.

[0062] like Figures 4 to 5 As shown, in one embodiment, the rake teeth 322 include:

[0063] The first tooth body 323 is provided with a first contact part, and the working surface 3221 of the rake tooth 322 and the first contact part are respectively provided on the front and rear end faces of the first tooth body 323.

[0064] The second tooth 324 is provided with a second fitting part that corresponds to and matches the first fitting part, and the first fitting part and the second fitting part fit together; wherein, the first tooth 323 and the second tooth 324 together form an installation opening 325, and the rake tooth 322 is connected to the support member 321 through the installation opening 325.

[0065] The connecting mechanism includes a first connector and a second connector. The first connector is used to connect a first tooth 323 and a second tooth 324, and the second connector is used to mount the first tooth 323 and the second tooth 324 onto a support 321.

[0066] In this embodiment, the first tooth 323 and the second tooth 324 are connected and fixed by the first connector, and the mounting port 325 formed by the combination of the first tooth 323 and the second tooth 324 allows the rake tooth 322 to be mounted on the support member 321. This enables the rake tooth 322 to be detachably mounted to the support member 321, avoiding the need to replace the entire rake head body 32 when individual rake teeth 322 are damaged. With the above structure, it is only necessary to remove the rake tooth 322 from the support member 321 to replace the rake tooth 322. The first tooth 323 and the second tooth 324 are connected and fixed by the first connector, thereby realizing the detachable installation of the first tooth 323 and the second tooth 324. This avoids the need to replace the entire rake tooth 322 when some parts of the rake tooth 322 are damaged. With the above structure, only the damaged part of the rake tooth 322 (such as the first tooth 323 or the second tooth 324) needs to be removed and the part of the rake tooth 322 needs to be replaced, further reducing the replacement cost.

[0067] Meanwhile, the fit between the first and second mating parts effectively ensures overall connectivity and strength, guaranteeing operational stability. It should be noted that the first and second mating parts can be corresponding groove and boss structures, thereby achieving contact between the connecting surfaces of the first tooth 323 and the second tooth 324, improving overall strength and ensuring operational stability.

[0068] The first connecting component includes detachable fasteners such as bolts and nuts to connect the first tooth 323 and the second tooth 324; no specific limitation is made here.

[0069] The second connector includes detachable fasteners such as bolts and nuts, which can be used to connect the first tooth 323, the second tooth 324 and the support 321. No limitation is made here.

[0070] In this embodiment, the first tooth 323 and the second tooth 324 are securely connected by fasteners, and the first tooth 323, the second tooth 324 and the support member 321 are securely connected, which greatly ensures the overall tight connection effect and overall strength of the rake teeth 322 and the rake head body 32 formed by the combination, and ensures the working stability of the rake teeth 322 and the rake head body 32.

[0071] Correspondingly, the first tooth body 323, the second tooth body 324, and the support member 321 are provided with corresponding threaded holes or through holes for connection with fasteners, thereby realizing the fastening connection of the first tooth body 323, the second tooth body 324, and the support member 321, ensuring overall working strength and extending service life.

[0072] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An improved excavator bucket, characterized by, include: The mounting mechanism has a first connecting part and a second connecting part at its upper end; wherein, the first connecting part is used to rotatably connect with the end of the excavator's stick, and the second connecting part is used to rotatably connect with the connecting rod connected to the excavator's bucket cylinder, so that when the bucket cylinder is working, the mounting mechanism is driven to rotate around the first connecting part on a first plane through the connecting rod. A turntable mechanism is connected to the lower end of the mounting mechanism; The excavating mechanism includes a mounting platform and a rake head body. The rake head body is mounted on the mounting platform, which is connected to a turntable mechanism for transmission. The turntable mechanism is used to drive the excavating mechanism to rotate circumferentially along a second plane. The first plane is perpendicular to the second plane.

2. An improved excavator bucket according to claim 1, wherein The turntable mechanism includes: The turntable body is fixedly connected to the mounting mechanism; A driving component is mounted on the turntable body. The driving end of the driving component is connected to the mounting platform. The driving component is used to drive the mounting platform to rotate, thereby causing the rake head body to rotate circumferentially along the turntable body.

3. An improved excavator bucket according to claim 2, wherein The driving end of the driving component is coaxially arranged with the axis of the turntable body.

4. The improved excavator rake head as described in claim 2, characterized in that, The driving end of the driving component is perpendicular to the mounting platform, and the driving end of the driving component and the center point of the mounting platform are on the same straight line.

5. An improved excavator rake head as described in claim 1, characterized in that, The rake head body includes a support member and several rake teeth. The support member is connected to the turntable mechanism through the mounting platform, and the several rake teeth are mounted on the support member.

6. An improved excavator rake head as described in claim 5, characterized in that, Two clamping plates are provided below the installation platform, and the support member is disposed between the two clamping plates.

7. An improved excavator rake head as described in claim 6, characterized in that, The rake teeth are welded and fixed to the support member, and the support member is welded and fixed to the mounting platform and the two clamping plates.

8. An improved excavator rake head as described in claim 5, characterized in that, Multiple rake teeth are arranged in an array at intervals, and each rake tooth has a working surface; wherein, the side opposite to the working surface is provided with a reinforcing rib.

9. An improved excavator rake head as described in claim 5, characterized in that, The rake teeth are detachably connected to the support member.

10. An improved excavator rake head as described in claim 9, characterized in that, The rake teeth include: First tooth body; The second tooth body, together with the first tooth body, forms a mounting opening, and the rake tooth is connected to the support member through the mounting opening; The connecting mechanism includes a first connector and a second connector, wherein the first connector is used to connect the first tooth and the second tooth, and the second connector is used to mount the first tooth and the second tooth on the support.