A detachable bulldozer blade secondary blade structure

Abstract

This utility model provides a detachable bulldozer blade secondary blade structure, belonging to the technical field of bulldozer blade structure. It aims to solve the problem that the fixing pin of existing bulldozer blade secondary blades is easily contaminated by mud, sand, and gravel, leading to corrosion, impact deformation, and consequently, wobbling, abnormal noise, and short service life. The technical solution is as follows: A detachable bulldozer blade secondary blade structure includes a blade plate and two parallel hinge plates. The hinge plates have hinge holes (for mounting the fixing pin) and limiting holes (for mounting the limiting pin). Protective tubes one and two are respectively installed between the holes, with the pin placed inside the tubes. A protective plate forms a sealed space between the hinge plates, and a reinforcing rib plate is also included. The rib plate has a locking bolt with a locking nut, and a wear-resistant plate is provided at the front end of the blade plate. The beneficial effects of this utility model are: this structure can isolate the pin from mud and sand, reducing corrosion and wear; the locking bolt prevents wobbling and abnormal noise, extending service life; and it is easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of bulldozer blade structure technology, and in particular to a detachable bulldozer blade secondary blade structure. Background Technology

[0002] The bulldozer blade is the most important working device on excavators and bulldozers, mainly used for digging, pushing, and unloading soil, and comes in various types and functions. Previously, they were mostly one-piece designs with fixed dimensions, limiting operating space. In recent years, with continuous urbanization and the popularization of agricultural mechanization, users' demands for bulldozer blades have become increasingly diversified, and bulldozer blade designs have been adjusted to adapt to changes in environmental space, leading to the development of foldable bulldozer blades. It consists of a central main blade and two side blades connected by a pin. When narrowing or widening the bulldozer blade: pull out the fixing pins of the widened side blades on both sides of the bulldozer blade, adjust the position after narrowing or widening, and insert the fixing pin into another pin hole. Due to the operating environment, the fixing pins are in contact with sand, gravel, and sewage for extended periods, making them prone to rust and deformation. Inserting and removing them is difficult, affecting the narrowing and widening of the side blades. After prolonged use, the gap between the hinge point of the main blade and the side blades increases, easily causing the side blades to wobble and produce abnormal noise. The entire conversion process is time-consuming and labor-intensive, and it can easily lead to wear on the mounting holes and pins of the auxiliary shovel, reducing its service life. Utility Model Content

[0003] The purpose of this utility model is to overcome the problems in the background technology and provide a detachable bulldozer blade secondary blade structure. The protective tube one, protective tube two and protective plate in the secondary blade can isolate the fixing pin and the limiting pin from the external mud and sand, avoid the risk of the fixing pin being corroded and deformed, and improve the service life of the fixing pin and the secondary blade.

[0004] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a detachable bulldozer blade secondary blade structure, including a blade plate and two vertically parallel hinge plates. The two hinge plates are respectively provided with a hinge hole and a limiting hole. The hinge hole is used to install a fixing pin, allowing the secondary blade to rotate around the fixing pin. The limiting hole is used to insert a limiting pin. After the limiting pin is inserted into the limiting hole, it restricts the state of the secondary blade. The working state of the secondary blade corresponds to the widening state of the bulldozer blade, and the retracted state corresponds to the narrowing state of the bulldozer blade. A protective tube one is provided between the two hinge holes, and a protective tube two is provided between the two limiting holes. The diameter of the hinge hole is smaller than the inner diameter of the protective tube one, and the diameter of the limiting hole is smaller than the inner diameter of the protective tube two. The fixing pin is located inside the protective tube one, and the limiting pin is located inside the protective tube two.

[0005] A protective plate is provided between the side walls of the two hinge plates, and the two hinge plates and the protective plate together form a sealed space. The protective pipe one, the protective pipe two and the protective plate can isolate the fixed pin and the limiting pin from the external mud and sand, avoid the risk of corrosion and deformation of the fixed pin and the limiting pin, and improve the service life of the fixed pin and the auxiliary shovel. In addition, the protective plate welded between the two hinge plates can also play a role in strengthening the support.

[0006] The shovel plate is welded to the side walls of the two hinged plates.

[0007] Furthermore, it also includes a first stiffener and a second stiffener. The first stiffener is welded to one side of the hinge plate, and the second stiffener is located at the tail of the hinge plate and is simultaneously welded to the shovel plate and the two hinge plates. Both the first stiffener and the second stiffener serve to support, reinforce, and strengthen the connection. In addition, grease can be injected into the first and second protective tubes of the auxiliary shovel through the grease nipples of the fixing pin and the limiting pin, respectively, and stored inside the first protective tube to further protect the fixing pin, lubricate the pin hinge point, and improve the service life of the fixing pin.

[0008] Furthermore, the first stiffener plate is provided with a threaded hole, which is an M8 threaded hole. A detachable clamping bolt is provided in the threaded hole. The threaded hole of the first stiffener plate can be used to press against the side panel on the main shovel through the clamping bolt to adjust the tightness between the main shovel and the auxiliary shovel, thereby controlling the shovel to shake and preventing abnormal noise.

[0009] Furthermore, a locking nut is installed on the tightening bolt. By screwing the locking nut into the tightening bolt, the tightening bolt can be fixed, preventing the tightening bolt from loosening and slipping during use, which would affect the fixation of the auxiliary shovel.

[0010] Furthermore, a wear-resistant plate is provided on the lower front side of the shovel plate, which helps to improve the service life of the auxiliary shovel.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up a protective tube one, a protective tube two, and a protective plate, the fixed pin can be hidden inside the auxiliary shovel's protective tube, preventing direct contact with the harsh external environment, reducing the risk of rust, and avoiding impacts, which helps to improve the service life of the fixed pin and the auxiliary shovel. In addition, the protective tube can also store grease injected into the pin to lubricate the pin's hinge point, further protecting the fixed pin. The threaded hole set at the bottom of the first rib plate allows for the screwing in of a clamping bolt. The clamping bolt abuts against the side panel of the main shovel, preventing the auxiliary shovel from shaking and producing abnormal noise. The locking nut on the clamping bolt can provide a tightening effect, preventing the bolt from loosening. Attached Figure Description

[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0013] Figure 1 A schematic diagram of the auxiliary shovel structure. Figure 1 .

[0014] Figure 2 A schematic diagram of the auxiliary shovel structure. Figure 2 .

[0015] Figure 3 A schematic diagram showing the connection between the main shovel and the auxiliary shovel.

[0016] The attached diagram is labeled as follows: 1. Shovel plate; 2. Hinge plate; 3. Hinge hole; 4. Limiting hole; 5. Fixing pin; 6. Secondary shovel; 7. Limiting pin; 8. Protective tube one; 9. Protective plate; 10. First stiffening plate; 11. Second stiffening plate; 12. Threaded hole; 13. Tightening bolt; 14. Locking nut; 15. Wear-resistant plate; 16. Main shovel; 17. Side panel; 18. Positioning hole one; 19. Positioning hole two. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are only for explaining this utility model and are not intended to limit it.

[0018] Example

[0019] like Figures 1-2 As shown, this embodiment provides a detachable bulldozer blade secondary blade structure, including a blade 1 and two vertically parallel hinge plates 2. The two hinge plates 2 are respectively provided with hinge holes 3 and limiting holes 4. The hinge holes 3 are used to install a fixing pin 5, and the secondary blade 6 can rotate around the fixing pin 5. The limiting holes 4 are used to insert a limiting pin 7. After the limiting pin 7 is inserted into the limiting hole 4, it can restrict the secondary blade 6 to be in the working state or the retracted state. The working state of the secondary blade 1 corresponds to the widening state of the bulldozer blade, and the retracted state of the secondary blade 1 corresponds to the narrowing state of the bulldozer blade. A protective tube 1 8 is provided between the two hinge holes 3, and a protective tube 2 is provided between the two limiting holes 4. The diameter of the hinge hole 3 is smaller than the inner diameter of the protective tube 1 8, and the diameter of the limiting hole 4 is smaller than the inner diameter of the protective tube 2. The fixing pin 5 is located inside the protective tube 1 8, and the limiting pin 7 is located inside the protective tube 2.

[0020] A protective plate 9 is provided between the side walls of the two hinge plates 2. The two hinge plates 2 and the protective plate 9 together form a sealed space. The protective pipe 1 8, the protective pipe 2 and the protective plate 9 can isolate the fixed pin 5 and the limiting pin 7 from the external mud and sand, avoid the risk of corrosion and deformation of the fixed pin 5 and the limiting pin 7, and improve the service life of the fixed pin 5 and the auxiliary shovel 1. In addition, the protective plate 9 is welded between the two hinge plates 2, which can also play a role in strengthening the support. The shovel plate 1 is welded to the side walls of the two hinge plates 2.

[0021] The secondary shovel 6 of this bulldozer blade also includes a first stiffening plate 10 and a second stiffening plate 11. The first stiffening plate 10 is welded together with the shovel plate 1 and the hinge plate 2 located on the upper side. The second stiffening plate 11 is located at the tail of the hinge plate 2 and is welded together with the shovel plate 1 and the two hinge plates 2. Both the first stiffening plate 10 and the second stiffening plate 11 play the role of supporting and reinforcing and strengthening the connection strength. In addition, grease can be injected into the protective tube 8 and the protective tube 2 of the secondary shovel through the grease nipples of the fixing pin 5 and the limiting pin 7, respectively, and stored inside the protective tube 8 to further protect the fixing pin 5, lubricate the pin hinge point, and improve the service life of the fixing pin 5.

[0022] The first stiffener 10 has a threaded hole 12, which is an M8 threaded hole. A removable clamping bolt 13 is installed in the threaded hole 12. The threaded hole of the first stiffener 10 can be used to press against the side panel 17 on the main shovel 16 through the clamping bolt 13, so as to adjust the tightness between the main shovel 16 and the auxiliary shovel 6, thereby controlling the shovel 6 from shaking and preventing abnormal noise. A locking nut 14 is installed on the clamping bolt 13. Screwing the locking nut 14 into the clamping bolt 13 can fix the clamping bolt 13 and prevent it from loosening and unraveling during use, which would affect the fixation of the auxiliary shovel 6. A wear-resistant plate 15 is provided on the lower front end of the shovel plate 1, which helps to improve the service life of the auxiliary shovel 6.

[0023] Work process:

[0024] like Figure 3 As shown, the auxiliary shovel 6 is hinged to both ends of the main shovel 16 of the bulldozer blade via a fixing pin 5. The main shovel 16 has three sets of holes: positioning hole 18, positioning hole 2 19, and a pivot hole. The pivot hole is located between positioning hole 18 and positioning hole 2 19. When the main shovel 16 and the auxiliary shovel 6 are installed, the pivot hole is connected to the hinge hole 3 on the auxiliary shovel 6 via the fixing pin 5. The fixing pin 5 is fixed to the main shovel 16 with bolts. Using this fixing pin 5 as a hinge point, when it is necessary to widen the width of the bulldozer blade, the auxiliary shovel 6 is rotated to the outer end of the main shovel 16, as shown. Figure 3As shown, the limiting pin 7 is simultaneously inserted into the limiting hole 4 on the auxiliary shovel 6 and the positioning hole 18 on the main shovel 16 to put the auxiliary shovel 6 into working condition. By screwing in the tightening bolt 13 and the locking nut 14, the tightening bolt abuts against the side panel 17 of the main shovel 16, which can prevent the auxiliary shovel 6 from shaking. At this time, the bulldozer blade is widened. To reduce the width of the bulldozer blade, loosen the tightening bolt 13 and the locking nut 14, pull out the limiting pin 7, rotate the auxiliary shovel 6 to the rear of the main shovel 16, and insert the limiting pin 7 into the limiting hole 4 on the auxiliary shovel 6 and the positioning hole 19 on the main shovel 16 to narrow the width of the bulldozer blade. During use, the fixed pin 5 and the limiting pin 7 are protected by protective tube 1 8 and protective tube 2, respectively, preventing them from direct contact with external sewage and sand. This protects them from impact and erosion. Furthermore, the grease fittings on the fixed pin 5 and the limiting pin 7 inject grease into the protective tube 1 8 and protective tube 2 of the auxiliary blade 6. These tubes store the grease, preventing corrosion and reducing wear. During widening and narrowing of the bulldozer blade, the pins are easy to insert, remove, and replace, reducing labor intensity, increasing production efficiency, and lowering costs.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A detachable bulldozer blade subblade structure, characterized by, The device includes a shovel (1) and two hinge plates (2) placed parallel to each other. The two hinge plates (2) are respectively provided with hinge holes (3) and limiting holes (4) with opposite positions. The hinge holes (3) are used to install a fixing pin (5). The auxiliary shovel (6) can rotate around the fixing pin (5). The limiting holes (4) are used to insert a limiting pin (7). After the limiting pin (7) is inserted into the limiting holes (4), it can restrict the state of the auxiliary shovel (6). A protective tube one (8) is set between the two hinge holes (3) and a protective tube two is set between the two limiting holes (4). The diameter of the hinge hole (3) is smaller than the inner diameter of the protective tube one (8) and the diameter of the limiting hole (4) is smaller than the inner diameter of the protective tube two. The fixing pin (5) is located inside the protective tube one (8) and the limiting pin (7) is located inside the protective tube two. A protective plate (9) is provided between the side walls of the two hinge plates (2), and the two hinge plates (2) and the protective plate (9) together form a sealed space; The shovel plate (1) is welded to the side walls of the two hinge plates (2).

2. A detachable bulldozer blade subblade configuration according to claim 1, wherein It also includes a first stiffener (10) and a second stiffener (11). The first stiffener (10) is welded to one side of the hinge plate (2), and the second stiffener (11) is located at the tail of the hinge plate (2) and is simultaneously welded to the shovel plate (1) and the two hinge plates (2).

3. A detachable bulldozer blade subblade configuration according to claim 2, wherein, The first stiffener (10) is provided with a threaded hole (12), and a removable clamping bolt (13) is provided in the threaded hole (12).

4. A detachable bulldozer blade subblade configuration according to claim 3, wherein A locking nut (14) is installed on the clamping bolt (13).

5. The detachable bulldozer blade secondary blade structure according to claim 1, characterized in that, A wear-resistant plate (15) is provided on the lower front side of the shovel plate (1).

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