Soil loosening device of bulldozer

Abstract

The utility model belongs to the technical field of bulldozers, and discloses a soil loosening device of a bulldozer, which comprises a base assembly used for connecting the bulldozer for lifting and further comprises a driving assembly installed at one end of the base assembly and used for providing soil loosening power, and a puncturing assembly installed at the bottom of the driving assembly and used for puncturing the ground in a reciprocating mode for pulse type soil loosening. The driving assembly comprises a lifting frame, a transmission shaft is installed in the middle of the lifting frame, a motor is arranged at one end of the transmission shaft, and a plurality of cams are evenly distributed on the transmission shaft. The puncturing assembly comprises a guide mechanism used for guiding puncturing and pushing open the loose soil, a plurality of lower puncturing mechanisms used for pressing and puncturing the ground to loosen the soil are evenly distributed on the guide mechanism, and springs are installed between the lower puncturing mechanisms and the guide mechanism and used for pushing the lower puncturing mechanisms to reset. According to the soil loosening device of the bulldozer, the top cam drives the soil loosening device to puncture the ground in a reciprocating mode to conduct pulse type soil loosening, blocking and jamming caused by soil entering are avoided, and smooth soil loosening is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of bulldozer technology, and in particular relates to a soil loosening device for a bulldozer. Background Technology

[0002] The ripper of a bulldozer is a highly efficient and multifunctional soil treatment tool that can meet the needs of various construction scenarios. It is mainly used for crushing and splitting hard soil, medium-hard rock, and weathered stone to facilitate excavation and loading operations using the bucket. It can also break frozen soil, excavate asphalt pavement, and even remove tree roots, clearing obstacles for construction work. It is widely used in engineering construction, mining, road repair, and other fields. When working in mines or quarries, the ripper and bucket work together to greatly improve work efficiency.

[0003] Comparing with Chinese Patent CN214090086U, a high-efficiency soil loosening device for a bulldozer is disclosed, comprising a first support plate and two first mounting plates. The two first mounting plates are respectively fixedly mounted on the left and right side walls of the first support plate. Each of the two first mounting plates has a connecting column on its adjacent side, and a connecting plate at the adjacent end of each of the two connecting columns. Two rotating shafts are provided between the two connecting plates, and each rotating shaft has multiple gears on its shaft wall. A chain is connected between every two gears, and multiple second mounting plates are provided on the side wall of each chain. Multiple loosening blades are provided on the upper surface of each second mounting plate. A first connecting rod is provided on the rear side of the first support plate, and a lifting mechanism is provided on the left end wall of the first connecting rod. This device can loosen compacted soil, thereby improving the working efficiency of the bulldozer.

[0004] However, soil can easily get into the gears and chains at the bottom of the aforementioned patent and cause blockages, which reduces the speed of loosening the soil and increases maintenance costs. Therefore, a new device needs to be designed. Utility Model Content

[0005] The purpose of this utility model is to provide a soil loosening device for bulldozers to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A soil loosening device for a bulldozer includes a base assembly for connecting the bulldozer to a lifting mechanism, and a drive assembly for providing soil loosening power installed at one end of the base assembly. A piercing assembly for reciprocatingly piercing the ground for pulse-like soil loosening is installed at the bottom of the drive assembly. The drive assembly includes a lifting frame with a drive shaft installed in the middle. A motor is installed at one end of the drive shaft, and several cams are evenly distributed on the drive shaft. The piercing assembly includes a guide mechanism for guiding the piercing and removing loose soil. Several downward piercing mechanisms for pressing down and piercing the ground to loosen the soil are evenly distributed on the guide mechanism. A spring is installed between the downward piercing mechanism and the guide mechanism to push the downward piercing mechanism back to its original position.

[0008] Furthermore, the base assembly includes a connecting seat, on which two hydraulic cylinders are symmetrically mounted, and a cantilever frame is installed between the telescopic ends of the hydraulic cylinders.

[0009] Furthermore: the connecting seat is L-shaped, the hydraulic cylinder is installed vertically, and four connecting holes are evenly distributed on the vertical wall of the connecting seat.

[0010] Furthermore, there are seven cams and seven downward thrust mechanisms, each corresponding to the other.

[0011] Furthermore: the guiding mechanism includes a guiding frame, the soil-facing surface of which is provided with a flow-guiding surface for clearing loose soil, and a number of clearance grooves are evenly distributed in the middle of the guiding frame; the piercing mechanism includes an anchor rod, the bottom end of which is provided with a pointed cone, the middle of which is provided with a limit slider, and the top of which is installed with a force transmission seat.

[0012] Furthermore, a connecting sleeve is provided on the bottom surface of the force transmission seat, and the connecting sleeve and the top of the anchor rod are connected by a fixing pin.

[0013] Furthermore, the guide surface is an inclined surface that is symmetrically inclined from the center of the guide frame to both ends. During operation, it will push aside the loose soil and guide it to both ends.

[0014] Compared with existing technologies, the beneficial effects are:

[0015] 1. The top cam drives the reciprocating piercing of the ground for pulse-type soil loosening, which avoids blockage and jamming due to soil entry and ensures smooth soil loosening.

[0016] 2. By repeatedly piercing the ground in conjunction with the bulldozer's forward movement, a pulse-type soil loosening setting is implemented, enabling the anchor bolts to periodically and automatically press down to pierce the soil and reset, forming a pulse-type soil loosening action that matches the bulldozer's speed, ensuring the soil breaking depth while avoiding equipment overload.

[0017] 3. Through the guide surface design of the guide frame, the loose soil can be diverted to both sides during the bulldozer's forward movement, reducing soil accumulation resistance. At the same time, in conjunction with the periodic loosening device, layered soil breaking can be achieved, significantly improving work efficiency. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a soil loosening device for a bulldozer according to the present invention;

[0019] Figure 2 This is a right sectional view of the soil loosening device for a bulldozer described in this utility model;

[0020] Figure 3 This is a schematic diagram of the base assembly of the soil loosening device for a bulldozer according to the present invention;

[0021] Figure 4 This is a schematic diagram of the drive assembly of the soil loosening device for a bulldozer according to the present invention;

[0022] Figure 5 This is a schematic diagram of the piercing component of the soil loosening device for a bulldozer according to the present invention;

[0023] Figure 6 This is an exploded view of the burr mechanism of the soil loosening device for a bulldozer described in this utility model.

[0024] In the attached drawings, the following are the reference numerals: 101, cantilever frame; 102, hydraulic cylinder; 103, connecting seat; 104, connecting hole; 201, lifting frame; 202, electric motor; 203, drive shaft; 204, cam; 301, guide frame; 302, guide surface; 303, clearance groove; 304, anchor bolt; 305, limit slider; 306, cone; 307, force transmission seat; 308, connecting sleeve; 309, fixing pin; 310, spring. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1-6 A soil loosening device for a bulldozer includes a base assembly for connecting the bulldozer to a lifting mechanism, and a drive assembly installed at one end of the base assembly for providing soil loosening power. A piercing assembly for reciprocatingly piercing the ground to perform pulse-type soil loosening is installed at the bottom of the drive assembly.

[0027] In this embodiment: the base assembly includes a connecting seat 103, on which two hydraulic cylinders 102 are symmetrically mounted. A cantilever frame 101 is installed between the telescopic ends of the hydraulic cylinders 102. The connecting seat 103 is L-shaped, and the hydraulic cylinders 102 are installed vertically. Four connecting holes 104 are evenly distributed on the vertical wall of the connecting seat 103. The connecting seat 103 is installed at the tail of the bulldozer through the connecting holes 104. During soil loosening operations, the connecting seat 103 supports the extension of the hydraulic cylinders 102, and the cantilever frame 101 pushes the lifting frame 201 to drive the guide frame 301 to descend and contact the ground.

[0028] In this embodiment: the drive assembly includes a lifting frame 201, a drive shaft 203 is installed in the middle of the lifting frame 201, a motor 202 is provided at one end of the drive shaft 203, and a number of cams 204 are evenly distributed on the drive shaft 203; seven cams 204 and seven piercing mechanisms are respectively provided, corresponding one to one; the lifting frame 201 supports the motor 202 to drive the cams 204 to rotate through the drive shaft 203, so that the high point and low point of the cam 204 cyclically contact the force transmission seat 307, pushing the anchor rod 304 to move;

[0029] In this embodiment: the piercing assembly includes a guiding mechanism for guiding piercing and removing loose soil. Several downward piercing mechanisms are evenly distributed on the guiding mechanism for pressing down and piercing the loose soil. A spring 310 is installed between the downward piercing mechanisms and the guiding mechanism to push the downward piercing mechanisms back to their original positions. The guiding mechanism includes a guiding frame 301, with a flow-guiding surface 302 on its soil-facing side for removing loose soil. Several clearance grooves 303 are evenly distributed in the middle of the guiding frame 301. The downward piercing mechanism includes an anchor rod 304, with a pointed cone 306 at its bottom end, a limit slider 305 in the middle of the anchor rod 304, and a force transmission seat 307 installed at the top of the anchor rod 304. A connecting sleeve 308 is provided on the bottom surface of the force transmission seat 307. The connecting sleeve 308 and the top of the anchor rod 304 are connected by a fixing pin 309. The guide surface 302 is an inclined surface that is symmetrically inclined from the center of the guide frame 301 to both ends. During operation, it pushes the loose soil to both ends. When the high point of the cam 204 contacts the force transmission seat 307, it compresses the spring 310 and presses down the anchor rod 304. While the limit slider 305 moves along the avoidance groove 303, it pierces the ground through the pointed cone 306, which cooperates with the bulldozer to loosen the soil. When the low point of the cam 204 contacts the force transmission seat 307, the elastic force of the spring 310 is released, pushing the force transmission seat 307 to drive the anchor rod 304 to be pulled out of the ground and reset.

[0030] Working principle: The connecting seat 103 is installed at the tail of the bulldozer through the connecting hole 104. During the loosening operation, the connecting seat 103 supports the extension of the hydraulic cylinder 102, which pushes the lifting frame 201 through the cantilever frame 101 to drive the guide frame 301 to descend and contact the ground. While the bulldozer moves forward, the guide surface 302 pushes the loose soil to both ends. The lifting frame 201 supports the motor 202 to drive the cam 204 to rotate through the transmission shaft 203. When the high point of the cam 204 contacts the force transmission seat 307, the spring 310 is compressed and the anchor rod 304 is pressed down. While the limit slider 305 moves along the avoidance groove 303, the pointed cone 306 pierces the ground, which is coordinated with the forward movement of the bulldozer to loosen the soil. When the low point of the cam 204 contacts the force transmission seat 307, the elastic force of the spring 310 is released, which pushes the force transmission seat 307 to drive the anchor rod 304 to be pulled out of the ground and reset. This alternating pulse loosening is carried out.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ripper device for a bulldozer comprising a base assembly for attachment to a lift of the bulldozer, characterized by: The base assembly is provided with a driving assembly at one end for providing soil loosening power, and the driving assembly is provided with a penetrating assembly at the bottom for penetrating the ground back and forth to loosen the soil in pulses. The driving assembly comprises a lifting frame (201), a transmission shaft (203) is installed in the middle of the lifting frame (201), one end of the transmission shaft (203) is provided with a motor (202), and a plurality of cams (204) are uniformly distributed on the transmission shaft (203). The penetrating assembly comprises a guide mechanism for guiding penetration and pushing away virtual soil, a plurality of downward penetrating mechanisms for penetrating the ground to loosen the soil are uniformly distributed on the guide mechanism, springs (310) are installed between the downward penetrating mechanisms and the guide mechanism for pushing the downward penetrating mechanisms to reset.

2. A ripper device for a bulldozer as defined in claim 1, characterized in that The base assembly comprises a connecting seat (103), two hydraulic cylinders (102) are symmetrically installed on the connecting seat (103), and a cantilever frame (101) is installed between the telescopic ends of the hydraulic cylinders (102).

3. A ripper device for a bulldozer as defined in claim 2, characterized in that The connecting seat (103) is L-shaped, the hydraulic cylinders (102) are vertically installed, and four connecting holes (104) are uniformly distributed on the vertical wall of the connecting seat (103).

4. A ripper device for a bulldozer as defined in claim 1, characterized in that: The cams (204) and the downward penetrating mechanisms are provided with seven respectively, one-to-one correspondence.

5. A ripper device for a bulldozer as defined in claim 1, characterized in that: The guide mechanism comprises a guide frame (301), a guide surface (302) is provided on the soil-facing surface of the guide frame (301) for pushing away virtual soil, and a plurality of avoidance grooves (303) are uniformly distributed in the middle of the guide frame (301); the downward penetrating mechanism comprises an anchor rod (304), a sharp cone (306) is provided at the bottom end of the anchor rod (304), a limiting sliding block (305) is provided in the middle of the anchor rod (304), and a force transmission seat (307) is installed at the top of the anchor rod (304).

6. A ripper device for a bulldozer as defined in claim 5, characterized in that The force transmission seat (307) is provided with a connecting sleeve (308) at the bottom surface, and the connecting sleeve (308) and the top of the anchor rod (304) are connected through a fixed pin (309).

7. A ripper device for a bulldozer as defined in claim 5, characterized in that The guide surface (302) adopts a slope symmetrically inclined from the center of the guide frame (301) to both ends, and when working, the virtual soil is pushed away and guided to both ends.

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