Bulldozer for roadbed construction

Abstract

The utility model relates to a bulldozer for roadbed construction, which belongs to the technical field of bulldozer equipment, and comprises a fixed frame, a cockpit top plate, a plurality of dust screens mounted on the cockpit top plate, a fixed frame fixedly connected to the lower side wall of the cockpit top plate, and a hand-pulled rotating component fixedly connected to the fixed frame through a connecting rod. The hand-pulling rotating assembly is connected with a ventilation assembly, and the upper side wall of the cab top plate is rotationally connected with a dust falling assembly used for falling dust; the ventilation assembly comprises a cross rod fixedly connected with the hand-pulling rotating assembly, the two ends of the cross rod are fixedly connected with draught fans, and air outlets of the two draught fans are oppositely arranged. The dust falling assembly comprises a water bucket fixedly connected to the upper side wall of the top plate of the cockpit, through the arrangement of the multiple dust-proof nets and the two ventilation assemblies with different outlet directions, the two ventilation assemblies can be used for achieving the dust dredging and air filtering effects on the two dust-proof nets correspondingly, and the ventilation effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of bulldozer equipment technology, specifically a bulldozer for roadbed construction. Background Technology

[0002] A bulldozer is a large piece of construction machinery mainly used for earthwork, road construction, and land leveling. It is usually equipped with a large bucket, which can push, scoop up, or level soil, sand, gravel, or other materials through the front bulldozer blades. The tracked chassis of the bulldozer gives it good traction and adaptability, enabling it to operate on various complex terrains. It is widely used in construction sites, mines, and farmland, and is an important piece of equipment for promoting the progress of civil engineering. Bulldozers have high operating efficiency and can significantly improve the efficiency and quality of engineering construction.

[0003] Chinese utility model patent 201920318054.0 discloses a ventilation device for a bulldozer operator's cab, including an operator's cab, a centrifugal fan, and ventilation devices. The centrifugal fan is installed through the top of the operator's cab, and ventilation devices are installed through the left and right sides of the cab. A seat is fixedly connected to the bottom of the operator's cab. The centrifugal fan, positioned directly above the seat, prioritizes drawing in air from directly above the operator, improving ventilation. An axial flow fan draws in outside air, and the combined effect of the centrifugal fan and airflow creates convection within the cab, further enhancing ventilation. This utility model provides a stable overall structure, enabling ventilation of the bulldozer operator's cab, increasing the device's autonomy, and facilitating control, making it highly valuable for widespread application.

[0004] In the aforementioned patent, for areas with heavy dust, a large amount of dust can clog the filtration system, leading to poor ventilation in the cab and affecting the respiratory health of the driver. Therefore, a bulldozer for roadbed construction is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a bulldozer for roadbed construction, so as to solve the problem mentioned in the background art that a large amount of dust will cause the filtration system to be blocked, resulting in poor ventilation in the cab.

[0006] The technical solution of this utility model is:

[0007] The system includes a fixed frame, which includes a cockpit roof panel. Multiple dustproof nets are installed on the cockpit roof panel. A fixed bracket is fixedly connected to the lower side wall of the cockpit roof panel. A hand-operated rotating assembly is fixedly connected to the fixed bracket via a connecting rod. A ventilation assembly is connected to the hand-operated rotating assembly. A dust suppression assembly for dust suppression is rotatably connected to the upper side wall of the cockpit roof panel.

[0008] The ventilation assembly includes a crossbar fixedly connected to the hand-operated rotating assembly. Both ends of the crossbar are fixedly connected to fans, and the air outlets of the two fans are arranged in opposite directions. Both fans are fixedly connected to a sealing ring at their upper ends.

[0009] The dust suppression assembly includes a water tank fixedly connected to the side wall of the cockpit roof, with a ring-shaped nozzle connected to the side wall of the water tank via a water pipe.

[0010] Furthermore, the hand-operated rotating assembly includes a fixed housing that is fixedly connected to the connecting rod. Inside the fixed housing, there are two annular plates. Multiple fixed rods are fixedly connected between the two annular plates. Guide discs are fixedly connected to the opposite side walls of the two annular plates. A vertical rod that passes through the two annular plates is inserted into the fixed housing. A guide bar located between the two guide discs is fixedly connected to the vertical rod.

[0011] By setting up components such as guide plates, the fan can be pulled to correspond to different dust screens, thereby improving the ventilation effect.

[0012] Furthermore, a hand lever is inserted into the lower end of the fixed shell and fixedly connected to the annular plate. A disc is rotatably connected to the lower end of the vertical rod. A tension spring is fixedly connected between the annular plate and the upper inner wall of the fixed shell.

[0013] By installing tension springs, the fan can be kept close to the top of the cockpit, preventing air leakage and improving the ventilation effect of the ventilation components.

[0014] This utility model provides an improved bulldozer for roadbed construction, which has the following improvements and advantages compared with the prior art:

[0015] Firstly, this utility model, through the setting of multiple dustproof nets and two ventilation components with different outlet directions, can utilize two ventilation components to respectively remove dust and filter air from the two dustproof nets, thereby improving the ventilation effect.

[0016] Secondly, this utility model allows for easy replacement of the corresponding dust filter in the ventilation component by manually pulling and rotating the component, thus maintaining good ventilation even in dusty environments. Attached Figure Description

[0017] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a three-dimensional perspective view of the present invention;

[0019] Figure 2 This is a structural schematic diagram of the fixed frame and ventilation components in this utility model;

[0020] Figure 3 This is a structural schematic diagram of the hand-operated rotating component in this utility model;

[0021] Figure 4 This is a diagram showing the state of the lever after it has been pulled down in this utility model.

[0022] Figure 5 This is a schematic diagram of the guide disk part in this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Fixed frame; 101. Cockpit roof panel; 102. Dustproof net; 103. Fixing bracket; 104. Connecting rod;

[0025] 2. Ventilation components; 201. Fan; 202. Sealing ring; 203. Crossbar;

[0026] 3. Hand-operated rotating assembly; 301. Fixed shell; 302. Vertical rod; 303. Annular plate; 304. Fixed rod; 305. Guide plate; 306. Guide bar; 307. Hand lever; 308. Tension spring; 309. Disc;

[0027] 4. Dust suppression components; 401. Water tank; 402. Water pipe; 403. Annular nozzle. Detailed Implementation

[0028] The following will be combined with the appendix Figures 1 to 5 This utility model will be described in detail, and the technical solutions in the embodiments of this utility model will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0029] This utility model provides an improved bulldozer for roadbed construction, such as... Figure 1 - Figure 5 As shown, it includes a fixed frame 1, which includes a cockpit roof 101. Multiple dustproof nets 102 are installed on the cockpit roof 101. A fixed bracket 103 is fixedly connected to the lower side wall of the cockpit roof 101. A hand-operated rotating assembly 3 is fixedly connected to the fixed bracket 103 via a connecting rod 104. A ventilation assembly 2 is connected to the hand-operated rotating assembly 3. A dust-reducing assembly 4 for dust reduction is rotatably connected to the upper side wall of the cockpit roof 101.

[0030] The ventilation assembly 2 includes a crossbar 203 fixedly connected to the hand-operated rotating assembly 3. Both ends of the crossbar 203 are fixedly connected to a fan 201, and the air outlets of the two fans 201 are arranged in opposite directions. A sealing ring 202 is fixedly connected to the upper end of each of the two fans 201.

[0031] The dust suppression component 4 includes a water tank 401 fixedly connected to the upper side wall of the cockpit roof 101. A ring-shaped nozzle 403 is connected to the side wall of the water tank 401 through a water pipe 402. A water pump is installed inside the water tank 401. The water pump draws water out of the water tank 401, so that the water can be sprayed out from the ring-shaped nozzle 403 through the water pipe 402. The water pump is not shown in the figure. The structure and principle of the water pump are existing technologies and will not be described in detail here.

[0032] In this embodiment: when one of the ventilation components 2 blows air to the outside, it can bring indoor air out and at the same time have a back-blowing effect on the dustproof net 102, so as to prevent the dustproof net 102 from being blocked the next time it is used. The other ventilation component 2 draws outside air into the room and uses the dustproof net 102 to filter the air.

[0033] When the blower 201, which blows air to the outside, rotates, the annular nozzle 403 can periodically spray and wash the dustproof net 102 at the air outlet. Combined with the back-blowing of the blower 201, the cleaning effect on the dustproof net 102 can be further improved.

[0034] In the above embodiments, to ensure that the dustproof net 102 can be replaced when it becomes clogged, thereby improving ventilation, the following method can be used:

[0035] The hand-operated rotating assembly 3 includes a fixed housing 301 fixedly connected to the connecting rod 104. The fixed housing 301 has two annular plates 303 inside, and multiple fixed rods 304 are fixedly connected between the two annular plates 303. Guide discs 305 are fixedly connected to the opposite side walls of the two annular plates 303. A vertical rod 302 is inserted into the fixed housing 301 and passes through the two annular plates 303. A guide rod 306 located between the two guide discs 305 is fixedly connected to the vertical rod 302. In a preferred embodiment, a hand-operated rod 307 fixedly connected to the annular plates 303 is inserted into the lower end of the fixed housing 301. A disc 309 is rotatably connected to the lower end of the vertical rod 302. A tension spring 308 is fixedly connected between the annular plates 303 and the upper inner wall of the fixed housing 301.

[0036] In a preferred embodiment, in the initial state, the annular plate 303 has an upward force under the tension of the tension spring 308. The overall weight of the vertical rod 302 and the ventilation assembly 2 is suspended in the groove of the lower guide plate 305 by the guide rod 306. At this time, the tension spring 308 can achieve a tight fit between the ventilation assembly 2 and the cockpit roof 101. When the hand lever 307 is pulled until the disc 309 contacts the fixed shell 301, the guide rod 306 will contact the groove of the upper guide plate 305. Using the inclined surface of the groove of the upper guide plate 305, the vertical rod 302 is guided to rotate. Figure 4As shown, the user then releases their hand, and the tension spring 308 drives the annular plate 303 to move upward. At this time, the guide rod 306 slides down into the other groove of the lower guide plate 305, completing the rotation of the vertical rod 302. The central angle between the two grooves of the guide plate 305 is 90 degrees, so that the vertical rod 302 can complete a 90-degree rotation, thereby driving the two ventilation components 2 to rotate 90 degrees, so that the ventilation components 2 are exactly aligned with the other two dustproof nets 102.

[0037] Working principle: When in use, by starting the fan 201, one of the fans 201 blows air to the outside, which can bring indoor air out and at the same time has a back-blowing effect on the dust screen 102 to prevent the dust screen 102 from being blocked the next time it is used. The other fan 201 draws outside air into the room and uses the dust screen 102 to filter the air.

[0038] When the dust filter 102 is not filtering effectively, the user pulls the lever 307. The lever 307 moves the annular plate 303 downward. When the lever 307 moves until the disc 309 contacts the fixed housing 301, the guide rod 306 contacts the groove of the upper guide plate 305. Using the inclined surface of the groove of the upper guide plate 305, the vertical rod 302 is rotated. Then the user releases the lever, and the tension spring 308 moves the annular plate 303 upward. At this time, the guide rod 306 slides down into the other groove of the lower guide plate 305, completing the rotation of the vertical rod 302 again. The rotation of the vertical rod 302 can drive the two ventilation components 2 to rotate, thereby allowing the fan 201 to replace the dust filter 102 and improve the ventilation effect inside the bulldozer cab.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bulldozer for roadbed construction, comprising a fixed frame (1), characterized in that: The fixed frame (1) includes a cockpit roof panel (101), on which multiple dustproof nets (102) are installed. A fixed frame (103) is fixedly connected to the lower side wall of the cockpit roof panel (101). A hand-operated rotating assembly (3) is fixedly connected to the fixed frame (103) via a connecting rod (104). A ventilation assembly (2) is connected to the hand-operated rotating assembly (3). A dust-reducing assembly (4) for dust reduction is rotatably connected to the upper side wall of the cockpit roof panel (101). The ventilation assembly (2) includes a crossbar (203) fixedly connected to the hand-operated rotating assembly (3). Both ends of the crossbar (203) are fixedly connected to a fan (201), and the air outlets of the two fans (201) are arranged opposite to each other. The dust suppression component (4) includes a water tank (401) fixedly connected to the upper side wall of the cockpit roof (101). The side wall of the water tank (401) is connected to an annular nozzle (403) via a water pipe (402) for spraying and washing the dust net (102). The hand-operated rotating assembly (3) includes a fixed housing (301) fixedly connected to the connecting rod (104), and two annular plates (303) are provided inside the fixed housing (301). Multiple fixing rods (304) are fixedly connected between the two annular plates (303), and guide discs (305) are fixedly connected to the opposite sidewalls of the two annular plates (303).

2. The bulldozer for roadbed construction according to claim 1, characterized in that: Both of the aforementioned fans (201) have sealing rings (202) fixedly connected to their upper ends.

3. A bulldozer for roadbed construction according to claim 2, characterized in that: A vertical rod (302) is inserted into the fixed shell (301) and passes through the two annular plates (303). A guide rod (306) located between the two guide discs (305) is fixedly connected to the vertical rod (302).

4. A bulldozer for roadbed construction according to claim 3, characterized in that: The lower end of the fixed shell (301) is connected to a hand lever (307) that is fixedly connected to the annular plate (303), and the lower end of the vertical rod (302) is rotatably connected to a disc (309).

5. A bulldozer for roadbed construction according to claim 4, characterized in that: A tension spring (308) is fixedly connected between the annular plate (303) and the upper inner wall of the fixed shell (301).

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