Press roller with built-in hydraulic motor driving device

Abstract

The utility model relates to a suppression roller with a built-in hydraulic motor driving device, which comprises a suppression roller frame, a suppression roller, a hollow support shaft, a hydraulic motor and a driving shaft, the suppression roller is of a hollow structure, the hollow support shaft is arranged in the suppression roller, the hydraulic motor is arranged in the hollow support shaft, and the driving shaft is arranged in the hollow support shaft. The hydraulic motor and one end, facing the driving shaft, of the hollow supporting shaft are connected with the bearing sleeve through bolts, an output shaft of the hydraulic motor is connected with the driving shaft, the driving shaft penetrates through a driving disc connected with one end, facing the driving shaft, of the pressing roller and then is rotationally connected with the pressing roller frame, the driving shaft is connected with the driving disc, and a bearing is installed between the driving shaft and the bearing sleeve. The end, away from the driving shaft, of the hollow supporting shaft penetrates through the pressing roller to be connected with the pressing roller frame, the end, away from the driving shaft, of the pressing roller is connected with a supporting disc, and a bearing is installed between the supporting disc and the hollow supporting shaft. The problems that an external hydraulic motor is complex in structure and large in occupied space, and dragging stacking and damage are prone to being generated when the external hydraulic motor makes contact with soil during operation are solved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, specifically a press roller with a built-in hydraulic motor drive device. Background Technology

[0002] Currently widely used tillage machinery, in accordance with agronomic requirements, not only loosens the soil by rotary tillage, but also compacts the loosened soil. The compaction method involves adding a compaction roller to the rear of the rotary tillage component to compact the soil while rotary tilling.

[0003] There are currently two types of compaction methods: passive compaction, which relies on the friction between the compaction roller and the soil to rotate the roller; and active compaction, which uses power from a tractor to drive the roller. The latter method is more popular because it significantly improves soil compaction. Furthermore, active compaction has two transmission methods: mechanical transmission, which uses a drive shaft and chain to transmit power to the roller for rotation; and hydraulic transmission, which uses a hydraulic pump to power a hydraulic motor, which drives the roller. Clearly, the latter is superior to the former. Currently, most widely used hydraulic motor-driven compaction rollers are externally mounted, such as... Figure 7 As shown, the system includes a compaction roller 100, a compaction roller shaft 200, a drive sprocket 300, a driven sprocket 400, a chain 500, and a hydraulic motor 600. The hydraulic motor drives the drive sprocket, which in turn drives the driven sprocket via the chain. The driven sprocket is mounted on the compaction roller shaft and drives the shaft, thereby causing the compaction roller to rotate and compact the soil. The hydraulic motor, drive sprocket, driven sprocket, and chain are located outside the compaction roller. The problems with this structure are that the external hydraulic motor is complex, occupies a large space, and the chain is prone to stretching, jamming, and breakage, resulting in a high failure rate and unstable transmission. Furthermore, the exposed hydraulic motor is susceptible to dragging and piling during operation, affecting work quality and potentially damaging components.

[0004] Therefore, this utility model provides a pressing roller with a built-in hydraulic motor drive device, which effectively solves the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a press roller with a built-in hydraulic motor drive device. The hydraulic motor is placed inside the press roller cylinder, which has a simple structure, saves space, and protects the hydraulic motor from damage.

[0006] The technical solution of this utility model:

[0007] A press roller with a built-in hydraulic motor drive includes a press roller frame and a press roller. The press roller is mounted on the press roller frame. The press roller includes a cylinder, a drive disk, a support disk, a hollow support shaft, a hydraulic motor, and a drive shaft. The cylinder has a hollow structure. The drive disk and the support disk are connected to the two ends of the cylinder, respectively. The hollow support shaft is placed inside the cylinder. The hydraulic motor is placed inside the hollow support shaft. The hollow support shaft and the hydraulic motor are connected to a bearing sleeve by bolts. The power output shaft of the hydraulic motor is connected to one end of the drive shaft. The other end of the drive shaft passes through the bearing sleeve and the drive disk and is rotatably connected to the press roller frame. A bearing is installed between the drive shaft and the bearing sleeve. The drive shaft is connected to the drive disk and drives the drive disk to rotate. The other end of the hollow support shaft passes through the support disk and is connected to the press roller frame. A bearing is installed between the support disk and the hollow support shaft. The hydraulic oil pipe of the hydraulic motor passes through the hollow support shaft.

[0008] The beneficial effects of this utility model are:

[0009] 1. This application solves the problems of complex structure, large space occupation, easy chain elongation, hairpin breakage, high failure rate and unstable transmission of external hydraulic motors, and the fact that the hydraulic motor is exposed to the outside, which can easily cause dragging and affect the quality of operation when in contact with the soil, and even damage the machine parts.

[0010] 2. This application integrates the hydraulic motor into the press roller, resulting in a compact structure that saves space. The inner cavity of the press roller also protects the hydraulic motor, increasing its operational reliability and ensuring the quality of the operation. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of the press roller with a built-in hydraulic motor drive device in this application.

[0013] Figure 2 This is a schematic diagram of the overall structure of the press roller with a built-in hydraulic motor drive device according to this application. (Another angle)

[0014] Figure 3 This is a schematic diagram of the internal structure of the press roller with a built-in hydraulic motor drive device in this application.

[0015] Figure 4 This is a cross-sectional view of the press roller with a built-in hydraulic motor drive device, as described in this application.

[0016] Figure 5 This is an enlarged structural diagram of the hydraulic motor portion of the press roller with a built-in hydraulic motor drive device, as per this application.

[0017] Figure 6 This is a schematic diagram of the structure of the press roller scraper with a built-in hydraulic motor drive device in this application.

[0018] Figure 7 This is a schematic diagram of the press roller structure of an external hydraulic motor device in the prior art.

[0019] Figure label:

[0020] In the prior art:

[0021] It includes a press roller 100; a press roller shaft 200; a drive sprocket 300; a driven sprocket 400; a chain 500; and a hydraulic motor 600.

[0022] In this application:

[0023] Press roller frame 1; connecting frame 11; two support arms 12; support beam 13; locking plate 14; support sleeve 15;

[0024] 2. Pressing roller; 20. Pin shaft; 21. Roller; 22. Drive disc; 23. Support disc; 24. Hollow support shaft; 25. Hydraulic motor; 251. Power output shaft; 26. Drive shaft; 27. Bearing sleeve; 28. Hydraulic oil pipe; 29. ​​Bearing seat;

[0025] Scraper structure 3; torsion spring adjusting plate 31; connecting shaft 32; torsion spring 33; scraper assembly 34; bushing 35; connecting plate 341 and scraper 342. Detailed Implementation

[0026] To address the problems in the background art, this application presents a press roller with a built-in hydraulic motor drive device. The hydraulic motor is placed inside the press roller, which can better protect the hydraulic motor.

[0027] It should be noted that in the description of this application, terms such as "inner", "outer", "upper", and "lower" that indicate direction or positional relationship are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0028] 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.

[0029] like Figure 1-4 As shown, a press roller with a built-in hydraulic motor drive device includes a press roller frame 1 and a press roller 2. The press roller 2 is mounted on the press roller frame 1. The press roller 2 includes a roller 21, a drive disk 22, a support disk 23, a hollow support shaft 24, a hydraulic motor 25, and a drive shaft 26. The roller 21 has a hollow cylindrical structure. The drive disk 22 and the support disk 23 are respectively connected to both ends of the roller 21. The hollow support shaft 24 is placed inside the roller 21, and the hydraulic motor 25 is placed inside the hollow support shaft 24. The hollow support shaft 24 and the hydraulic motor 25 are connected to a bearing sleeve 27 by bolts. The power output shaft 251 of the hydraulic motor 25 is connected to one end of the drive shaft 26, and the other end of the drive shaft 26 passes through the bearing sleeve 27 and the drive disk 22 and is rotatably connected to the press roller frame 1. Figure 4 As shown, the drive shaft 26 (connected via bearing and bearing housing 29) has a bearing installed between it and the bearing sleeve 27. The drive shaft 26 is connected to the drive disc 22, which drives the drive disc 22 to rotate, thereby driving the roller 21 and the support disc 23 to rotate, compacting the loose soil. The other end of the hollow support shaft 24 passes through the support disc 23 and connects to the compaction roller frame 1. A bearing is installed between the support disc 23 and the hollow support shaft 24. The hydraulic oil pipe 28 of the hydraulic motor 25 passes through the hollow support shaft 24 and exits. The drive shaft and the drive disc can be connected by a pin 20, bolts, etc. The drive shaft 26 is connected to the power output shaft 251 of the hydraulic motor 25 by a spline, coupling, or key.

[0030] The pressing roller 21 and the drive disk 22 can be connected in a fixed or detachable manner, and the pressing roller 21 and the support disk 23 can be connected in a detachable manner. The detachable connection can be made by bolts or other means, and the fixed connection can be made by welding or other means.

[0031] like Figure 1-2 As shown, the press roller frame 1 includes a connecting frame 11, two support arms 12, a support beam 13, and a locking plate 14. One end of each support arm 12 is rotatably connected to the connecting frame 11, and the support beam 13 is fixedly installed between the two support arms 12. The other end of one support arm 12 is connected to a support sleeve 15. A hollow support shaft 24 passes through the support sleeve 15 and is fixed to the support arm by the locking plate 14. The other support arm 12 is rotatably connected to a drive shaft. Figure 2As shown, one side of the locking plate 14 is bolted to the hollow support shaft 24, and the other side of the locking plate 14 is bolted to the press roller frame 1.

[0032] like Figure 3-4 As shown, the hollow support shaft 24 has a stepped structure, with the diameter of one end facing the drive shaft being larger than that of the other end. That is, the diameter of the end connected to the bearing sleeve is thicker, while the diameter of the end connected to the press roller frame through the locking plate after passing through the press roller is thinner.

[0033] like Figure 1 , 6 As shown, the press roller also has a scraper structure 3, which includes two torsion spring adjusting plates 31, a connecting shaft 32, a torsion spring 33, and a scraper assembly 34. Two torsion spring adjusting plates 31 are welded to the press roller frame 1. The connecting shaft 32 passes through the shaft holes on the two torsion spring adjusting plates 31 and is locked at both ends with pins. A bushing 35 is fixed to one side of the scraper assembly 34 and fits onto the connecting shaft 32. A torsion spring 35 is fitted between the scraper assembly 34 and the two torsion spring adjusting plates 31 on the connecting shaft 32. One end of the torsion spring 35 is inserted into the adjusting hole of the torsion spring adjusting plate 31, and the other end of the torsion spring 35 presses against the scraper assembly 34. The scraper assembly 34 consists of a connecting plate 341 and a scraper 342. One side of the connecting plate 341 is fitted onto the connecting shaft 32 through the bushing, and the other side of the connecting plate 341 is bolted to the scraper 342. The scraper 342 is in contact with the surface of the press roller 21. The torsion spring adjusting plate 31 has multiple adjusting holes, and the torsion spring is inserted into different adjusting holes according to the different soil viscosity.

[0034] like Figure 4 Specific embodiments shown:

[0035] The press roller of this application is a hollow cylindrical roller, loosely fitted onto a hollow support shaft. Both ends are bolted to the drive disc and support disc respectively, allowing the press roller to rotate with the drive shaft. The flange end of the hollow support shaft (facing the drive shaft) is bolted to a bearing sleeve. The end of the drive shaft connected to the power output shaft of the hydraulic motor has an internal spline and is mounted on the bearing sleeve via a bearing. The other end of the drive shaft is inserted into the bearing seat of the press roller frame. The hydraulic motor is bolted to the bearing sleeve, and its power output shaft has an external spline, inserted into the internal spline of the drive shaft. The drive disc is fitted onto the drive shaft and connected to it via a pin, allowing the drive disc to rotate with the drive shaft. The support disc, equipped with a bearing, is fitted onto one end of the thin shaft of the hollow support shaft, allowing the support disc to rotate on the hollow support shaft. The built-in hydraulic motor-driven press roller has a compact structure, occupies little space, and provides smooth and reliable transmission. By placing the hydraulic motor inside the press roller and utilizing the internal cavity of the press roller to protect the hydraulic motor, its operational reliability is increased, ensuring work quality. This overcomes the shortcomings of the original hydraulic motor-driven sprocket, which in turn drives the chain to drive the press roller. These shortcomings include the tendency for the chain to stretch, resulting in a high failure rate of chain jamming and breakage, unstable transmission, and large space occupation.

[0036] The working principle of the press roller with built-in hydraulic motor drive device in this application is as follows:

[0037] Hydraulic oil enters the hydraulic motor through the hydraulic oil pipe, causing the hydraulic motor to work. The power output shaft of the hydraulic motor rotates, and the power output shaft drives the drive shaft to rotate through the spline. The drive shaft drives the drive disc to rotate, which in turn drives the roller and support disc to rotate, thus completing the compaction of the loose soil.

[0038] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art, inspired by this description, design similar structures and implementations to the above embodiments without departing from the technical essence of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A press roller with a built-in hydraulic motor drive, characterized in that: The device includes a press roller frame and a press roller, which is mounted on the press roller frame. The press roller includes a roller cylinder, a drive disk, a support disk, a hollow support shaft, a hydraulic motor, and a drive shaft. The roller cylinder has a hollow structure, with the drive disk and support disk connected to both ends of the roller cylinder, respectively. The hollow support shaft is placed inside the roller cylinder, and the hydraulic motor is placed inside the hollow support shaft. The hollow support shaft and the hydraulic motor are connected to a bearing sleeve by bolts. The power output shaft of the hydraulic motor is connected to one end of the drive shaft, and the other end of the drive shaft passes through the bearing sleeve and the drive disk and is rotatably connected to the press roller frame. A bearing is installed between the drive shaft and the bearing sleeve. The drive shaft is connected to the drive disk, and the drive shaft drives the drive disk to rotate. The other end of the hollow support shaft passes through the support disk and is connected to the press roller frame. A bearing is installed between the support disk and the hollow support shaft. The hydraulic oil pipe of the hydraulic motor extends out from the hollow support shaft.

2. A press roller with a built-in hydraulic motor drive device according to claim 1, characterized in that: The pressing roller is connected to the drive plate in a fixed or detachable manner, and the pressing roller is connected to the support plate in a detachable manner.

3. A press roller with a built-in hydraulic motor drive device according to claim 1, characterized in that: The press roller frame includes a connecting frame, two support arms, a support beam, and a locking plate. One end of each of the two support arms is rotatably connected to the connecting frame, and a support beam is fixedly installed between the two support arms. The other end of one of the support arms is connected to a support sleeve. A hollow support shaft passes through the support sleeve and is fixed to the support arm by the locking plate. The other support arm is rotatably connected to the drive shaft.

4. A press roller with a built-in hydraulic motor drive device according to claim 1, characterized in that: The hollow support shaft has a stepped structure, with the diameter of the end of the hollow support shaft facing the drive shaft being larger than the diameter of the other end.

5. A press roller with a built-in hydraulic motor drive device according to any one of claims 1-4, characterized in that: The press roller is also equipped with a scraper structure, which includes two torsion spring adjusting plates, a connecting shaft, a torsion spring, and a scraper assembly. Two torsion spring adjusting plates are welded onto the press roller frame. The connecting shaft passes through the shaft holes on the two torsion spring adjusting plates and is locked at both ends with pins. A bushing is fixed to one side of the scraper assembly and is fitted onto the connecting shaft. A torsion spring is fitted between the scraper assembly and the two torsion spring adjusting plates on the connecting shaft. One end of the torsion spring is inserted into the adjusting hole of the torsion spring adjusting plate, and the other end of the torsion spring presses against the scraper assembly.

6. A press roller with a built-in hydraulic motor drive device according to claim 5, characterized in that: The scraper assembly consists of a connecting plate and a scraper. One side of the connecting plate is sleeved on the connecting shaft, and the other side of the connecting plate is bolted to the scraper. The scraper is in contact with the surface of the pressing roller.

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