Hydraulic power transmission device of bulldozer

Abstract

The utility model discloses a bulldozer hydraulic power transmission device which comprises a bulldozer body, a hydraulic power transmission assembly and a bucket. The hydraulic power transmission assembly comprises first hydraulic cylinders arranged on the two sides of the front end of the mounting frame, adjusting plates arranged at the output ends of the first hydraulic cylinders and connected with the mounting frame, second hydraulic cylinders arranged in the middle of the front end of the mounting frame, arc-shaped plates arranged at the output ends of the second hydraulic cylinders, and connecting rods arranged at the ends, away from the second hydraulic cylinders, of the arc-shaped plates. According to the hydraulic power transmission device of the bulldozer, an arc-shaped plate is controlled to rotate around the connecting position of the arc-shaped plate and a limiting plate through an arranged second hydraulic cylinder, the rotating arc-shaped plate controls angle adjustment of a bucket through a connecting rod, meanwhile, the angle of an adjusting plate is controlled through an arranged first hydraulic cylinder, and then the height of the bucket is controlled; compared with an existing hydraulic power transmission system of the bulldozer, the hydraulic power transmission system of the bulldozer has the advantage that the angle adjustment flexibility of the bucket is high.

Description

Technical Field

[0001] The utility model relates to the technical field of bulldozers, and specifically relates to a hydraulic power transmission device for a bulldozer. Background Technique

[0002] A bulldozer is an earthwork construction machinery that can excavate, transport, and discard rock and soil, and has a wide range of uses in open-pit mines. For example, it is used for building a waste dump, leveling a truck waste dump, piling up scattered ore and rock, leveling a working bench and a construction site, etc. It is not only used for auxiliary work but also for primary mining work. For example: stripping and mining of placer deposits, towing and boosting of scrapers and rock plows, and cooperating with other earthwork machinery to reduce the stripping bench height when there is no transportation mining method. Most bulldozers use a hydraulic transmission system, and a hydraulic cylinder is used to lift and adjust the posture of the scraper blade.

[0003] In the existing hydraulic power transmission system of a bulldozer, the hydraulic cylinder directly acts on the bucket, and the output end of the hydraulic cylinder is directly connected to the bucket, and the angle adjustment of the bucket is not flexible enough. For this reason, we propose a hydraulic power transmission device for a bulldozer. Content of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and the title of the utility model of this application, to avoid obscuring the purpose of this part, the abstract, and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] In view of the above and / or problems existing in the existing bulldozers, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a hydraulic power transmission device for a bulldozer. By setting a second hydraulic cylinder to control the arc plate to rotate around the connection with the limit plate, the rotating arc plate controls the angle adjustment of the bucket through a connecting rod. At the same time, by setting a first hydraulic cylinder to control the angle of the adjusting plate, the height of the bucket is further controlled. Compared with the existing hydraulic power transmission system of a bulldozer, the present utility model has the advantage of high flexibility in angle adjustment of the bucket.

[0007] To solve the above technical problems, according to one aspect of the present utility model, the following technical solutions are provided:

[0008] A hydraulic power transmission device for a bulldozer, comprising:

[0009] A bulldozer main body, with a mounting bracket provided at its front end;

[0010] The hydraulic power transmission assembly includes first hydraulic cylinders arranged on both sides of the front end of the mounting frame, a regulating plate arranged at the output end of the first hydraulic cylinders and connected to the mounting frame, a second hydraulic cylinder arranged in the middle of the front end of the mounting frame, an arc-shaped plate arranged at the output end of the second hydraulic cylinder, a connecting rod arranged at the end of the arc-shaped plate away from the second hydraulic cylinder, a cross bar vertically arranged in the middle of the inner sides of the two regulating plates, and two limiting plates symmetrically arranged outside the cross bar, wherein the limiting plates are movably connected to the arc-shaped plate;

[0011] The bucket is arranged at the front end of the hydraulic power transmission assembly, and the bucket is connected to the regulating plate and the connecting rod;

[0012] As a preferred scheme of a hydraulic power transmission device of a bulldozer according to the present invention, a plug rod is arranged at the upper end of the mounting frame, and the plug rod penetrates through the mounting frame to the middle of the front end of the bulldozer main body.

[0013] As a preferred scheme of a hydraulic power transmission device of a bulldozer according to the present invention, the regulating plate and the mounting frame are connected by a pin shaft, the output end of the first hydraulic cylinder and the regulating plate are connected by a pin shaft, and the second hydraulic cylinder and the arc-shaped plate are connected by a pin shaft.

[0014] As a preferred scheme of a hydraulic power transmission device of a bulldozer according to the present invention, first connecting parts are fixed on both sides of the rear end of the bucket, a second connecting part is fixed in the middle of the rear end of the bucket, the first connecting part and the regulating plate are connected by a pin shaft, and the second connecting part and the connecting rod are connected by a pin shaft.

[0015] As a preferred scheme of a hydraulic power transmission device of a bulldozer according to the present invention, the arc-shaped plate and the connecting rod are connected by a pin shaft, and the middle of the arc-shaped plate and the limiting plate are connected by a pin shaft.

[0016] As a preferred scheme of a hydraulic power transmission device of a bulldozer according to the present invention, bucket teeth are arranged on the front side of the inner bottom of the bucket, bolts are arranged on the bucket teeth, and the bolts penetrate through the bucket teeth into the bucket.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: for this hydraulic power transmission device of a bulldozer, the second hydraulic cylinder is arranged to control the rotation of the arc-shaped plate around the connection with the limiting plate, the rotating arc-shaped plate controls the angle adjustment of the bucket through the connecting rod, and at the same time, the first hydraulic cylinder is arranged to control the angle of the regulating plate, thereby controlling the height of the bucket. Compared with the existing hydraulic power transmission system of a bulldozer, the present invention has the advantage of high flexibility in angle adjustment of the bucket. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will describe the present utility model in detail in conjunction with the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0019] Figure 1 Schematic three-dimensional structure diagram of a hydraulic power transmission device for a bulldozer of the present utility model;

[0020] Figure 2 Schematic partial three-dimensional structure diagram of a hydraulic power transmission device for a bulldozer of the present utility model;

[0021] Figure 3 Schematic three-dimensional structure diagram of the bucket of a hydraulic power transmission device for a bulldozer of the present utility model;

[0022] In the figure: 100, bulldozer main body; 101, mounting frame; 102, insertion rod; 200, hydraulic power transmission assembly; 210, first hydraulic cylinder; 220, adjusting plate; 230, second hydraulic cylinder; 240, arc plate; 250, connecting rod; 260, cross bar; 270, limiting plate; 300, bucket; 301, first connecting portion; 302, second connecting portion; 303, bucket teeth. Detailed embodiments

[0023] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following will describe the detailed embodiments of the present utility model in conjunction with the drawings.

[0024] Secondly, the present utility model will be described in detail in combination with the schematic diagrams. When detailing the embodiments of the present utility model, for the convenience of description, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0025] To make the purpose, technical solutions and advantages of the present utility model clearer, the following will further describe the embodiments of the present utility model in conjunction with the drawings.

[0026] The present utility model provides a hydraulic power transmission device for a bulldozer. By setting the second hydraulic cylinder to control the rotation of the arc plate around the connection with the limiting plate, the rotating arc plate controls the angle adjustment of the bucket through the connecting rod. At the same time, by setting the first hydraulic cylinder to control the angle of the adjusting plate, the height of the bucket is further controlled. Compared with the existing hydraulic power transmission system of a bulldozer, the present utility model has the advantage of high flexibility in adjusting the angle of the bucket.

[0027] Figures 1 - 3 Shown is a schematic structural diagram of an embodiment of a hydraulic power transmission device for a bulldozer of the present utility model. Please refer to Figures 1 - 3 For a hydraulic power transmission device of a bulldozer in this embodiment, its main body part includes a bulldozer main body 100, a hydraulic power transmission component 200, and a bucket 300.

[0028] An installation frame 101 is provided at the front end of the bulldozer main body 100. As a preference, in this embodiment, a plug rod 102 is provided at the upper end of the installation frame 101. The plug rod 102 penetrates through the installation frame 101 to the front end of the bulldozer main body 100. Under the action of the plug rod 102, the installation frame 101 is installed at the front end of the bulldozer main body 100. Later, the operator can remove the plug rod 102 to remove the installation frame 101 from the front end of the bulldozer main body 100, so as to carry out disassembly, assembly and maintenance on it.

[0029] The hydraulic power transmission component 200 includes first hydraulic cylinders 210 arranged on both sides of the front end of the installation frame 101, a regulating plate 220 arranged at the output end of the first hydraulic cylinders 210 and connected to the installation frame 101, a second hydraulic cylinder 230 arranged in the middle of the front end of the installation frame 101, an arc-shaped plate 240 arranged at the output end of the second hydraulic cylinder 230, a connecting rod 250 arranged at the end of the arc-shaped plate 240 away from the second hydraulic cylinder 230, a cross bar 260 vertically arranged in the middle of the inner sides of the two regulating plates 220, and two limiting plates 270 symmetrically arranged outside the cross bar 260. The limiting plates 270 are movably connected to the arc-shaped plate 240. As a preference, in this embodiment, the regulating plate 220 and the installation frame 101 are connected by a pin shaft, the output end of the first hydraulic cylinder 210 and the regulating plate 220 are connected by a pin shaft, the second hydraulic cylinder 230 and the arc-shaped plate 240 are connected by a pin shaft. For the installation frame 101 and the first hydraulic cylinder 210 connected to the regulating plate 220 by a pin shaft, later the operator can remove the pin shaft to remove the regulating plate 220 from the installation frame 101 and the first hydraulic cylinder 210, and remove the arc-shaped plate 240 from the second hydraulic cylinder 230, so as to facilitate disassembly, assembly and replacement of them.

[0030] The bucket 300 is arranged at the front end of the hydraulic power transmission assembly 200, and the bucket 300 is connected to the adjusting plate 220 and the connecting rod 250. Preferably, in this embodiment, first connection parts 301 are fixed on both sides of the rear end of the bucket 300, and a second connection part 302 is fixed in the middle of the rear end of the bucket 300. The first connection part 301 and the adjusting plate 220 are connected by a pin shaft, and the second connection part 302 and the connecting rod 250 are connected by a pin shaft. Under the action of the first connection part 301 and the second connection part 302, the bucket 300 is connected to the adjusting plate 220 and the connecting rod 250. In the later stage, the operator can remove the bucket 300 from the front end of the hydraulic power transmission assembly 200 by removing the pin shaft, so as to disassemble, install and replace the bucket 300 when it is damaged. The arc-shaped plate 240 and the connecting rod 250 are connected by a pin shaft, and the middle part of the arc-shaped plate 240 and the limiting plate 270 are connected by a pin shaft. With the arc-shaped plate 240 connected by a pin shaft, the operator can remove the arc-shaped plate 240 by removing the pin shaft in the later stage, so as to disassemble, install and replace the arc-shaped plate 240. A bucket tooth 303 is arranged on the front side of the inner bottom of the bucket 300, and a bolt is arranged on the bucket tooth 303. The bolt penetrates through the bucket tooth 303 into the bucket 300. The bucket tooth 303 arranged on the bucket 300 is installed on the bucket 300 under the action of the bolt. In the later stage, when the bucket tooth 303 is damaged, the operator can disassemble and install the bucket tooth 303 by removing the bolt so as to replace it.

[0031] Combined with Figures 1 - 3 , a hydraulic power transmission device for a bulldozer in this embodiment is used as follows: The angle of the adjusting plate 220 is controlled by the first hydraulic cylinder 210, and then the height of the front bucket 300 is controlled. After the bucket 300 is placed at a specified height, the arc-shaped plate 240 is controlled to rotate by the second hydraulic cylinder 230, and then the angle of the front bucket 300 is adjusted. Compared with the existing hydraulic power transmission system of a bulldozer, the utility model has the advantage of high flexibility in adjusting the angle of the bucket 300. The entire hydraulic power transmission assembly 200 is installed at the front end of the bulldozer main body 100 through the insertion rod 102 under the action of the mounting frame 101. In the later stage, the operator can remove the mounting frame 101 together with the hydraulic power transmission assembly 200 from the front end of the bulldozer main body 100 by removing the insertion rod 102, so as to facilitate the maintenance personnel to disassemble, install and overhaul it.

[0032] Although the present utility model has been described above with reference to the embodiments, various improvements can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present utility model can be combined with each other in any manner, and the exhaustive description of these combinations is not given in this specification only for the consideration of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A bulldozer hydraulic power transmission device, characterized in that: include: A bulldozer body (100) having a mounting frame (101) disposed at the front end thereof; The hydraulic power transmission assembly (200) comprises a first hydraulic cylinder (210) arranged at both sides of the front end of the mounting frame (101), an adjustment plate (220) arranged at the output end of the first hydraulic cylinder (210) and connected to the mounting frame (101), a second hydraulic cylinder (230) arranged at the middle of the front end of the mounting frame (101), an arc plate (240) arranged at the output end of the second hydraulic cylinder (230), a connecting rod (250) arranged at the end of the arc plate (240) away from the second hydraulic cylinder (230), a cross bar (260) arranged vertically at the middle of the inner sides of the two adjustment plates (220), and two limit plates (270) arranged symmetrically outside the cross bar (260), wherein the limit plates (270) are movably connected to the arc plate (240); A bucket (300) is arranged at the front end of the hydraulic power transmission assembly (200), and the bucket (300) is connected to the adjustment plate (220) and the connecting rod (250).

2. A bulldozer hydraulic power transmission device according to claim 1, characterized in that: An insertion rod (102) is provided at the upper end of the mounting frame (101), and the insertion rod (102) penetrates the mounting frame (101) to the front end of the bulldozer body (100).

3. The bulldozer hydraulic power transmission device according to claim 1, characterized in that: The adjustment plate (220) and the mounting frame (101) are connected via a pin shaft, the output end of the first hydraulic cylinder (210) and the adjustment plate (220) are connected via a pin shaft, and the second hydraulic cylinder (230) and the arc plate (240) are connected via a pin shaft.

4. The bulldozer hydraulic power transmission device according to claim 1, characterized in that: A first connection part (301) is fixed to both sides of the rear end of the bucket (300), a second connection part (302) is fixed to the middle of the rear end of the bucket (300), the first connection part (301) and the adjustment plate (220) are connected via a pin shaft, and the second connection part (302) and the connecting rod (250) are connected via a pin shaft.

5. The bulldozer hydraulic power transmission device according to claim 1, characterized in that: The arc plate (240) is connected to the connecting rod (250) via a pin, and the middle portion of the arc plate (240) is connected to the limiting plate (270) via a pin.

6. The bulldozer hydraulic power transmission device according to claim 1, characterized in that: A bucket tooth (303) is arranged at the front side of the inner bottom of the bucket (300), and a bolt is arranged on the bucket tooth (303), and the bolt penetrates the bucket tooth (303) into the bucket (300).

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