A gearbox for a walking rammer

Abstract

The present invention discloses a gearbox for a walking rammer, belonging to the technical field of gearboxes. The gearbox includes a housing, an input shaft is rotatably arranged at the top of the housing, a power gear is arranged on the input shaft, a walking drive gear is meshed and connected to the lower end of the power gear, a crawling drive gear is rotatably arranged coaxially on one side of the walking drive gear, a walking output shaft located below the walking drive gear is also rotatably arranged on the housing, a rammer output shaft is rotatably arranged below the walking output shaft, a shifting gear assembly that rotates coaxially with the walking output shaft is arranged in the housing, the shifting gear assembly can slide along the walking output shaft, and a shifting assembly is arranged on the side wall of the housing. The gearbox can easily realize the single rotation of the walking output shaft or the synchronous rotation of the walking output shaft and the rammer output shaft, and thus can realize the adjustment of two gears of walking or crawling ramming. The operation is convenient, the internal structure is simple, the processing cost is low, and the practicability is strong.

Description

Technical Field

[0001] The present invention relates to the technical field of gearboxes, and in particular to a gearbox for a walking rammer. Background Art

[0002] In the construction field, there are various types of rammers, such as hand-held type, frog type, walking type, etc. Among them, the self-walking rammer mainly consists of a small single-cylinder tractor and a rammer, and realizes the functions of walking or ramming while crawling by adjusting the lower inclined lever of the gearbox. However, the current gearboxes are all obtained by direct purchase. Due to their relatively complex internal structure and high purchase cost, the processing and assembly cost of the self-walking rammer is high, resulting in its limited application. In addition, when in use, it is necessary to replace the V-belt, which is inconvenient to operate.

[0003] Therefore, we have designed and launched a new type of simple gearbox for walking ramming. Its internal structure is simple. A single gear lever can be used for shifting operations of walking or crawling and ramming. When in use, there is no need to replace the V-belt, the operation is convenient, and the processing cost is low. Summary of the Invention

[0004] The purpose of the present invention is to provide a gearbox for a walking rammer to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A gearbox for a walking rammer includes a housing. An input shaft is rotatably provided at the top of the housing. A power gear is provided on the input shaft. The lower end of the power gear is meshed with a walking drive gear. A crawling drive gear is coaxially rotatably provided on one side of the walking drive gear. A walking output shaft is also rotatably provided on the housing below the walking drive gear. A ramming output shaft is rotatably provided below the walking output shaft. A shifting gear assembly that rotates coaxially with the walking output shaft is provided inside the housing. The shifting gear assembly can slide along the walking output shaft. The shifting gear assembly is used to realize the independent rotation of the walking output shaft and the simultaneous rotation of the walking output shaft and the ramming output shaft. A shifting assembly for adjusting the position of the shifting gear assembly is provided on the side wall of the housing.

[0007] As a further preferred solution of the present invention: The shifting gear assembly includes a sliding shaft. One end of the walking output shaft is inserted into the sliding shaft and is slidably connected to the sliding shaft. A crawling driven gear corresponding to the crawling drive gear is provided on the sliding shaft. A walking driven gear corresponding to the walking drive gear and a ramming driving gear are respectively provided on both sides of the crawling driven gear. A ramming driven gear corresponding to the ramming driving gear is provided on the ramming output shaft. Slide plates slidably connected to the housing are provided at both ends of the sliding shaft. The sliding shaft penetrates through the slide plates and is rotatably connected to the slide plates.

[0008] The ramming output shaft is provided with a ramming driven gear corresponding to the ramming driving gear. Slide plates slidably connected to the housing are provided at both ends of the sliding shaft. The sliding shaft penetrates through the slide plates and is rotatably connected to the slide plates.

[0009] As a further preferred solution of the present invention: support rods are symmetrically arranged on the front and rear sides of the shell, and the support rods pass through the slide plate and are slidably connected to the slide plate.

[0010] As a further preferred embodiment of the present invention: the shift assembly includes a shift rod connecting shaft rotatably arranged on the side wall of the shell, the shift rod connecting shaft passes through the side wall of the shell and is connected to a lower oblique shift rod, and the end of the lower oblique shift rod is located between the creeping driven gear and the slide plate.

[0011] As a further preferred solution of the present invention: a plurality of limit keys are evenly arranged on the outer wall of the end of the travel output shaft, a plurality of limit slots corresponding to the limit keys are opened in the inner hole of the sliding shaft, and the limit keys are slidably arranged in the limit slots.

[0012] As a further preferred embodiment of the present invention: a pulley is provided at the output end of the travel output shaft, and a sprocket is provided at the output end of the tamping output shaft.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The gearbox cooperates with the travel drive gear, the creeping drive gear and the shift gear assembly. By turning the gear lever connecting shaft, the position of the shift gear assembly can be easily changed, and the travel output shaft can be easily rotated alone or the travel output shaft and the tamping output shaft can be synchronously rotated, so as to realize the travel or creeping tamping of the walking tamping machine. The structure is simple and the operation is convenient.

[0015] 2. By designing a fixed support rod in the housing and a slide plate sliding along the support rod, the shift gear assembly can be supported, and the sliding shaft and the travel output shaft are connected by sliding plug-in. With the support of the slide plate, it is ensured that the sliding shaft can slide stably along the travel output shaft, and the two can rotate synchronously, without complex mechanical structure, reducing processing costs;

[0016] 3. By setting the end of the lower oblique lever between the creeper driven gear and the slide plate, when the lever connecting shaft is rotated, the lower oblique lever can be brought into contact with the slide plate or the creeper driven gear, thereby pushing the shift gear assembly to slide left and right, thereby achieving adjustment of different gears, which is easy to operate.

[0017] In summary, the gearbox can easily realize the independent rotation of the travel output shaft or the synchronous rotation of the travel output shaft and the tamping output shaft. The adjustment of the two gears of travel or crawling tamping can be realized by rotating the gear lever connecting shaft through the shift lever.

[0018] The operation is convenient, the internal structure is simple, the processing cost is low, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the gear state when the walking gearbox of the rammer of the present invention is in the walking gear position;

[0020] Figure 2 It is a schematic structural diagram of the gear state when the walking gearbox of the rammer of the present invention is in the crawling ramming gear position;

[0021] Figure 3 It is a top view structural diagram of the shift gear assembly of the walking gearbox of the rammer of the present invention;

[0022] Figure 4 It is a schematic diagram of the cooperation relationship between the limit key and the limit groove of the walking gearbox of the rammer of the present invention.

[0023] In the figure: 1. Housing; 2. Input shaft; 3. Power gear; 4. Walking drive gear; 5. Crawling drive gear; 6. Support rod; 7. Slide plate; 8. Walking driven gear; 9. Crawling driven gear; 10. Ramming drive gear; 11. Slide shaft; 12. Walking output shaft; 13. Ramming output shaft; 14. Ramming driven gear; 15. Shift lever connecting shaft; 16. Lower inclined shift lever; 17. Limit key; 18. Limit groove; 19. Pulley; 20. Sprocket. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0025] Please refer to FIGS. 1-4. This embodiment provides a gearbox for a walking rammer, which includes a housing 1. An input shaft 2 is rotatably arranged at the top of the housing 1. A power gear 3 is arranged on the input shaft 2. A walking drive gear 4 is meshed and connected to the lower end of the power gear 3. A crawling drive gear 5 is coaxially rotatably arranged on one side of the walking drive gear 4. A walking output shaft 12 is also rotatably arranged in the housing 1 below the walking drive gear 4. A pulley 19 is arranged at the output end of the walking output shaft 12. A ramming output shaft 13 is rotatably arranged below the walking output shaft 12. A sprocket 20 is arranged at the output end of the ramming output shaft 13. A shifting gear assembly that rotates coaxially with the walking output shaft 12 is arranged in the housing 1. The shifting gear assembly can slide along the walking output shaft 12. The shifting gear assembly is used to realize the independent rotation of the walking output shaft 12 and the simultaneous rotation of the walking output shaft 12 and the ramming output shaft 13. Specifically, the shifting gear assembly includes a sliding shaft 11. One end of the walking output shaft 12 is inserted into the sliding shaft 11 and is slidably connected to the sliding shaft 11. As Figure 4 shown, a plurality of limiting keys 17 are evenly

[0026] arranged on the outer wall of the end of the walking output shaft 12. A plurality of limiting grooves 18 corresponding to the limiting keys 17 are opened in the inner hole of the sliding shaft 11. The limiting keys 17 are slidably arranged in the limiting grooves 18. A crawling driven gear 9 corresponding to the crawling drive gear 5 is arranged on the sliding shaft 11. A walking driven gear 8 corresponding to the walking drive gear 4 and a ramming driving gear 10 are respectively arranged on both sides of the crawling driven gear 9. A ramming driven gear 14 corresponding to the ramming driving gear 10 is arranged on the ramming output shaft 13. Slide plates 7 that are slidably connected to the housing 1 are arranged at both ends of the sliding shaft 11. The sliding shaft 11 passes through the slide plates 7 and is rotatably connected to the slide plates 7. Specifically, as shown in FIGS. 1-3, support rods 6 are symmetrically arranged on the front and rear sides in the housing 1. The support rods 6 pass through the slide plates 7 and are slidably connected to the slide plates 7. A stop rod connecting shaft 15 is rotatably arranged on the side wall of the housing 1. The stop rod connecting shaft 15 passes through the side wall of the housing 1 and is connected to a lower inclined shift lever 16. The end of the lower inclined shift lever 16 is located between the crawling driven gear 9 and the slide plate 7. A shifting assembly for adjusting the position of the shifting gear assembly is arranged on the side wall of the housing 1.

[0027] In practical applications, as a conventional design, a clutch should be connected to the input end of the input shaft 2 to control power output and realize shifting.

[0028] To enable those skilled in the art to better understand this application, the working principle of this gearbox will be elaborated below:

[0029] As shown in Figure 1, it is a schematic diagram of the gear state of the gearbox in the walking state. At this time, the walking driven gear 8 meshes with the walking driving gear 4. At this time, the input shaft 2 drives the power gear 3 to rotate, and the power is sequentially transmitted from the walking driving gear 4, the walking driven gear 8, and the sliding shaft 11 to the walking output shaft 12. The walking output shaft 12 drives the pulley 19 to rotate, and the pulley 19 drives the external single-cylinder tractor to walk.

[0030] As shown in Figures 2 and 3, when it is necessary to switch to the crawling ramming gear, stop the rotation of the input shaft 2. By inserting the shifting lever into the shift lever connecting shaft 15 and rotating the shift lever connecting shaft 15, at this time, the lower inclined lever 16 abuts against the right slide plate 7, driving the sliding shaft 11 to move to the right, so that the walking driven gear 8 disengages from the walking driving gear 4, and the crawling driven gear 9 meshes with the crawling driving gear 5. At this time, the ramming driving gear 10 meshes with the ramming driven gear 14, and the input shaft 2 is rotated. The input shaft 2 drives the power gear 3 to rotate, and the power is coaxially transmitted from the walking driving gear 4 to the crawling driving gear 5, and then transmitted from the crawling driven gear 9 to the sliding shaft 11 and the walking output shaft 12. At the same time, it is transmitted from the ramming driving gear 10 to the ramming driven gear 14, and the ramming output shaft 13 is realized. The ramming output shaft 13 drives the sprocket 20 to rotate, and the sprocket 20 drives the rammer to move through the transmission chain, realizing the crawling ramming operation.

[0031] It should be noted that the above embodiments only specifically and clearly describe the technical solutions and technical features of the present application. For those skilled in the art, the solutions or features that belong to the prior art or common general knowledge are not described in detail in the above embodiments.

[0032] In addition, the technical solution of the present application is not limited to the above embodiments. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation manners that can be understood by those skilled in the art.

Claims

1. A gearbox for a walking rammer, comprising a housing (1), and an input shaft is rotatably provided at the top of the housing (1). (2), a power gear (3) is provided on the input shaft (2), characterized in that, The lower end of the power gear (3) is meshed and connected with a walking drive gear (4). A crawling drive gear (5) is rotatably provided coaxially on one side of the walking drive gear (4). A walking output shaft (12) is also rotatably provided on the housing (1) below the walking drive gear (4). A ramming output shaft (13) is rotatably provided below the walking output shaft (12). A shifting gear assembly that rotates coaxially with the walking output shaft (12) is provided in the housing (1). The shifting gear assembly can slide along the walking output shaft (12). The shifting gear assembly is used to realize the independent rotation of the walking output shaft (12) and the simultaneous rotation of the walking output shaft (12) and the ramming output shaft (13). A shifting assembly for adjusting the position of the shifting gear assembly is provided on the side wall of the housing (1). The shifting gear assembly includes a sliding shaft (11). One end of the walking output shaft (12) is inserted into the sliding shaft (11) and is slidably connected with the sliding shaft (11). A crawling driven gear (9) corresponding to the crawling drive gear (5) is provided on the sliding shaft (11). A walking driven gear (8) corresponding to the walking drive gear (4) and a ramming driving gear (10) are respectively provided on both sides of the crawling driven gear (9). A ramming driven gear (14) corresponding to the ramming driving gear (10) is provided on the ramming output shaft (13). Slide plates (7) slidably connected with the housing (1) are provided at both ends of the sliding shaft (11). The sliding shaft (11) penetrates through the slide plates (7) and is rotatably connected with the slide plates (7). A pulley (19) is provided at the output end of the walking output shaft (12), and a sprocket (20) is provided at the output end of the ramming output shaft (13).

2. The transmission for a walking rammer according to claim 1, characterized in that, Support rods (6) are symmetrically provided on the front and rear sides in the housing (1). The support rods (6) penetrate through the slide plates (7) and are slidably connected with the slide plates (7).

3. The speed change gearbox for a walking rammer according to claim 2, characterized in that, The shifting assembly includes a shift lever connecting shaft (15) rotatably provided on the side wall of the housing (1). The shift lever connecting shaft (15) penetrates through the side wall of the housing (1) and is connected with a lower inclined shift lever (16). The end of the lower inclined shift lever (16) is located between the crawling driven gear (9) and the slide plate (7).

4. The speed change gearbox for a walking rammer according to claim 1, characterized in that, A plurality of limit keys (17) are uniformly provided on the outer wall of the end of the walking output shaft (12). A plurality of limit grooves (18) corresponding to the limit keys (17) are provided in the inner hole of the sliding shaft (11). The limit keys (17) are slidably provided in the limit grooves (18).

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