Roadbed tamping device

Abstract

The utility model belongs to the technical field of pavement construction equipment, and particularly relates to a roadbed tamping device which is characterized by comprising a rack, a tamping operation part, a walking wheel first rotating shaft, a first connecting rod, a second connecting rod, a sliding sleeve, a thrust rod, a second rotating shaft, a push rod and a limiting lock catch, a tamping operation part is installed at the front end of the rack, first rotating shafts are arranged at the bottoms of the two sides of the rack correspondingly, two first connecting rods are connected to each first rotating shaft, each first connecting rod can rotate around the corresponding first rotating shaft, and a walking wheel is rotationally installed at the other end of each first connecting rod; a rotating shaft of each walking wheel is rotationally connected with a second connecting rod; sliding sleeves in the vertical direction are arranged in the middles of the two sides of the rack, thrust rods are slidably installed in the sliding sleeves, second rotating shafts are arranged at the lower ends of the thrust rods, and the ends, not connected with the walking wheels, of the two second connecting rods on the same side are hinged to the second rotating shafts.

Description

Technical Field

[0001] The utility model relates to the technical field of road construction equipment, in particular to a roadbed compacting device. Background Art

[0002] An important process in pavement construction is to compact the roadbed. The existing technology has large-scale mechanized equipment to compact the roadbed, which is efficient and effective. However, for some small roads, large equipment cannot be put into practical use due to space and cost constraints. Therefore, some single-operated roadbed compaction devices are still needed.

[0003] A small roadbed compaction device is generally composed of a frame, running wheels, a compaction part and a human-driven part. Due to the particularity of the application scenarios of small roadbed compaction devices, they need to be frequently transported and moved. In addition, their weight is large. Even if a brake device is provided on the running wheels, the brake device will be easily damaged by a large load. Small roadbed compaction devices with running wheels are prone to accidental movement during transportation, causing safety accidents. At the same time, due to their heavy weight, when not in use, the running wheels remain stationary for a long time, and cannot be evenly stressed through rotation, and are easily deformed and damaged. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a roadbed compaction device, including a frame, a compaction operation part, a first rotating shaft of a traveling wheel, a first connecting rod, a second connecting rod, a sliding sleeve, a thrust rod, a second rotating shaft, a push rod and a limit lock;

[0005] The cam is provided with a first end for holding the wheel shaft and a second end for holding the wheel shaft, the second end for holding the wheel shaft being connected to the first end of the wheel shaft and the second end for holding the wheel shaft being connected to the first end of the wheel shaft.

[0006] Preferably, a tension spring is provided between the two first connecting rods on the same side of the frame, and the tension direction of the tension spring is a direction to pull the two first connecting rods to close upwards.

[0007] Preferably, the push rod is a telescopic structure, and the push rod is completely stored in the frame when it is retracted to the shortest length.

[0008] Preferably, the push rod is a multi-section structure and the multi-section structures are connected by threads.

[0009] Preferably, a gripping bent portion is provided on one end of the push rod extending outward away from the frame, and an anti-slip rubber sleeve is provided on the gripping bent portion.

[0010] Preferably, the sliding sleeve is a linear bearing, and the surface of the thrust rod is provided with a wear-resistant coating.

[0011] Preferably, a sliding damper is provided between the sliding sleeve and the thrust rod, and the sliding damper is used to slow down the relative sliding speed between the sliding sleeve and the thrust rod.

[0012] Compared with the prior art, the utility model provides a roadbed compaction device, which has the following beneficial effects:

[0013] 1. Solve the hidden danger that the traveling wheels of the small roadbed compaction device are prone to accidental movement during transportation and movement, thus causing safety accidents.

[0014] 2. Solve the problem that the travel wheels of small roadbed compaction devices are subjected to directional static loads for a long time when not in use, which shortens the service life of the travel wheels.

[0015] 3. During transportation, the traveling wheels and the push rods that push the entire frame can be completely stored inside the frame, thereby improving the regularity of the appearance of the small roadbed compaction device during transportation and improving the transportation efficiency of the small roadbed compaction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model in an expanded state;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model in the contracted state.

[0018] In the figure: 1. frame; 2. compacting operation part; 3. walking wheel; 4. push rod; 5. first rotating shaft; 6. first connecting rod; 7. second connecting rod; 8. second rotating shaft; 9. thrust rod; 10. sliding sleeve; 11. limit lock; 12. tension spring; 13. gripping bending part. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example

[0021] Combine the following Figure 1 and Figure 2 , introduces a roadbed compaction device provided by the present application, including a roadbed compaction device, including a frame 1, a compaction operation part 2, a walking wheel 3, a first rotating shaft 5, a first connecting rod 6, a second connecting rod 7, a sliding sleeve 10, a thrust rod 9, a second rotating shaft 8, a push rod 4 and a limit lock buckle 11;

[0022] A tamping operation part 2 is installed at the front end of the frame 1, and first rotating shafts 5 are provided at the bottom of both sides of the frame 1, and each of the first rotating shafts 5 is connected to two first connecting rods 6, and each of the first connecting rods 6 can rotate around the first rotating shaft 5, and the other end of each of the first connecting rods 6 is rotatably installed with a walking wheel 3, and the rotating shaft of each of the walking wheels 3 is rotatably connected with a second connecting rod 7; vertical sliding sleeves 10 are provided in the middle of both sides of the frame 1, and a thrust rod 9 is slidably installed in the sliding sleeve 10, and a second rotating shaft 8 is provided at the lower end of the thrust rod 9, and the ends of the two second connecting rods 7 on the same side that are not connected to the walking wheel 3 are hinged to the second rotating shaft 8, and a push rod 4 for holding and pushing the entire frame 1 is rotatably installed at the front position of the sliding sleeve 10 on the frame 1. This design can The effect of a labor-saving lever is realized. A very small force acting on the push rod 4 can generate a large pushing force on the push rod 9. The rod portion of the push rod 4 abuts and cooperates with the top end of the push rod 9. When the push rod 9 is at the upper dead center, the walking wheel 3 is completely rotated and retracted into the frame 1; a limit lock buckle 11 is provided on the rear side of the frame 1. When the push rod 4 swings toward the rear side of the frame 1 to push the push rod 9 to the lower dead center, the limit lock buckle 11 locks the push rod 4 in the rotation direction, that is, the push rod 4 is automatically locked in the limit position after entering the limit lock buckle 11. The structure of the door lock that automatically locks when the door is closed can be referred to. No further details are given here. The limit lock buckle 11 can be an elastic lock tongue component with an unlocking function, or it can be an elastic lock block. In the preferred embodiment, the elastic lock block needs to be provided with a concave curved surface for fitting the push rod 4.

[0023] See also Figure 2After the traveling wheels 3 are stored into the frame 1, the frame 1 is supported by the ground, and there is no rotating part in contact with the ground. It can be stably and reliably placed on a truck or other means of transportation for transportation. When the traveling wheels 3 need to be opened, the push rod 4 is restored to the longest state by threaded assembly or telescopic pull-out, that is, the state of compaction operation. It is necessary to hold the push rods 4 on both sides of the frame 1 with both hands and swing them toward the rear side of the frame 1. The rod part of the push rod 4 presses the top of the thrust rod 9 downward, thereby increasing the angle between the two second connecting rods 7 connected to the second rotating shaft 8, and then pushes the traveling wheels 3 to move downward and extend out of the ground of the frame 1 until the thrust rod 9 is pushed to the bottom dead center. At this time, the limit lock 11 locks the push rod 4 in the rotation direction. Since the push rod 4 no longer moves, the degree of freedom of all components is 0 at this time. Refer to Figure 1 .

[0024] At this time, the entire structure can no longer move, and the push rod 4 can be used to perform compaction operations or move; when the walking wheel 3 needs to be stored into the frame 1, the limit lock 11 needs to be unlocked. At this time, the limit lock 11 no longer restricts the swing of the push rod 4. Under the action of gravity, the entire frame 1 moves downward until it touches the ground, and finally the walking wheel 3 is stored into the frame 1.

[0025] A tension spring 12 is provided between the two first connecting rods 6 on the same side of the frame 1. The tension direction of the tension spring 12 is to pull the two first connecting rods 6 to close upward, which can prevent the two second connecting rods 7 from swinging freely during transportation and causing abnormal noise and accidental collision.

[0026] The push rod 4 is a telescopic structure. When the push rod 4 is retracted to the shortest position, it is completely stored in the frame 1. The telescopic structure is more convenient and less likely to cause parts to be lost, which helps to improve the practicality of the present application.

[0027] In some embodiments, the push rod 4 may also be a multi-section structure and the multi-section structures are connected by threads. The threaded connection is more reliable and can carry a larger load. Compared with the telescopic structure, it is more practical in high-power and high-load situations.

[0028] A gripping bending portion 13 is provided on one end of the push rod 4 extending outwardly away from the frame 1. The gripping bending portion 13 can be a bend at the end of the push rod 4 or a separately added component. An anti-slip rubber sleeve is provided on the gripping bending portion 13 to improve the gripping comfort of the operator.

[0029] The sleeve 10 is a linear bearing, which improves the smoothness of the fit between the sleeve 10 and the thrust rod 9. The surface of the thrust rod 9 is provided with a wear-resistant coating. Since the thrust rod 9 is subjected to a large load, a large relative force will be generated with the sleeve 10. Therefore, the setting of the wear-resistant coating can effectively improve the service life of the sleeve 10 and the thrust rod 9.

[0030] A sliding damper is provided between the sliding sleeve 10 and the thrust rod 9, and the sliding damper is used to slow down the relative sliding speed between the sliding sleeve 10 and the thrust rod 9, thereby avoiding a rigid impact between the frame 1 and the ground during the process of storing the walking wheel 3 into the frame 1.

[0031] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A roadbed compaction device, characterized in that: It comprises a frame (1), a compacting operation part (2), a walking wheel (3), a first rotating shaft (5), a first connecting rod (6), a second connecting rod (7), a sliding sleeve (10), a thrust rod (9), a second rotating shaft (8), a push rod (4) and a limit lock buckle (11); A compacting operation part (2) is installed at the front end of the frame (1); first rotating shafts (5) are provided at the bottom of both sides of the frame (1); each of the first rotating shafts (5) is connected to two first connecting rods (6); each of the first connecting rods (6) can rotate around the first rotating shaft (5); a walking wheel (3) is rotatably installed at the other end of each of the first connecting rods (6); and the rotating shaft of each of the walking wheels (3) is rotatably connected to a second connecting rod (7); vertical sliding sleeves (10) are provided in the middle of both sides of the frame (1); a thrust rod (9) is slidably installed in the sliding sleeve (10); a second rotating shaft (8) is provided at the lower end of the thrust rod (9); and The ends of the two second connecting rods (7) that are not connected to the walking wheels (3) are both hinged to the second rotating shaft (8); a push rod (4) for holding and pushing the entire frame (1) is rotatably installed at the front side of the sliding sleeve (10) on the frame (1); the rod portion of the push rod (4) is abutted against the top end of the thrust rod (9); when the thrust rod (9) is at the upper dead point, the walking wheels (3) are completely rotated and retracted into the frame (1); a limit lock (11) is provided on the rear side of the frame (1); when the push rod (4) swings toward the rear side of the frame (1) until the thrust rod (9) is pushed to the lower dead point, the limit lock (11) locks the push rod (4) in the rotation direction.

2. A roadbed compaction device according to claim 1, characterized in that: A tension spring (12) is provided between two first connecting rods (6) on the same side of the frame (1), and the tension direction of the tension spring (12) is a direction for pulling the two first connecting rods (6) upwards and closing together.

3. A roadbed compaction device according to claim 1, characterized in that: The push rod (4) is a telescopic structure, and when the push rod (4) is retracted to its shortest position, it is completely stored in the frame (1).

4. A roadbed compaction device according to claim 1, characterized in that: The push rod (4) is a multi-section combined structure, and the multi-section structures are connected by threads.

5. A roadbed compaction device according to claim 1, characterized in that: A gripping bent portion (13) is provided on one end of the push rod (4) extending outward away from the frame (1), and an anti-slip rubber sleeve is provided on the gripping bent portion (13).

6. A roadbed compaction device according to claim 1, characterized in that: The sliding sleeve (10) is a linear bearing, and the surface of the thrust rod (9) is provided with a wear-resistant coating.

7. A roadbed compaction device according to claim 1, characterized in that: A sliding damper is provided between the sliding sleeve (10) and the thrust rod (9), and the sliding damper is used to slow down the relative sliding speed between the sliding sleeve (10) and the thrust rod (9).

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