Transmission structure of double-wheel different-direction cutting saw

Abstract

The utility model relates to the technical field of cutting machine transmission, in particular to a transmission structure of a double-wheel different-direction cutting saw. Comprising a transmission cylinder; the transmission shaft is axially and rotatably inserted into the transmission cylinder; a bevel gear is arranged at the output end of the transmission shaft, and the transmission shaft is in transmission connection with an inner / outer output shaft of the saw blade driving box through the bevel gear; the transmission shaft and the inner / outer output shaft are arranged in a vertical relation; and the coupling connects the input end of the transmission shaft with the output end of the motor. The top and the bottom of the transmission cylinder further comprise an oil injection port and an oil discharge port which are formed, and sealing covers are locked on the oil injection port and the oil discharge port. The cutting saw has the advantages of being light in structure and small in occupied size, and the output torque of the cutting saw is improved due to the fact that the transmission shaft is perpendicular to the inner output shaft and the outer output shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting machine transmission, in particular to a transmission structure of a double-wheeled heterogeneous cutting saw. Background Art

[0002] The existing double-wheeled counter-directional cutting saw uses a motor as a power source, and then drives a circular saw blade through a belt drive assembly and a bevel gear transmission box to perform sawing operations. The tool has the characteristics of safety, reliability, high working efficiency, etc. For example, the lithium-powered double-wheeled counter-directional cutting saw with the publication number CN220659414U comprises: a mounting frame, a driving assembly and a lithium battery pack; and also comprises: a transmission box, which is arranged on the mounting frame, and the input end of the transmission box is connected to the output end of the driving assembly; and a cutting saw wheel, wherein the two output ends of the transmission box are respectively sleeved with the cutting saw wheels, so that the two cutting saw wheels are arranged coaxially and can rotate in opposite directions relative to each other.

[0003] However, when the above device is used, since the cutting saw transmits power between the motor and the cutting saw wheel through the belt transmission assembly and the bevel gear transmission assembly, the transmission structure occupies a large space, is not compact enough, and has a bulky overall structure. Utility Model Content

[0004] The purpose of the utility model is to provide a transmission structure of a double-wheeled asymmetric cutting saw. By designing a novel transmission structure, the use of belt drive components is reduced, the advantages of light structure and small occupied volume are achieved, and the output torque of the cutting saw is improved by arranging the transmission shaft and the inner / outer output shaft in a vertical relationship.

[0005] In order to solve the above technical problems, the utility model provides a transmission structure of a double-wheeled asymmetric cutting saw, comprising:

[0006] Transmission cylinder;

[0007] A transmission shaft is axially rotatably inserted into the transmission cylinder; a bevel gear is provided at the output end of the transmission shaft, and is connected to the inner / outer output shaft of the saw blade drive box through the bevel gear; and the transmission shaft and the inner / outer output shaft are arranged in a vertical relationship;

[0008] A coupling connects the input end of the transmission shaft and the output end of the motor.

[0009] Preferably, the top and bottom of the transmission cylinder further include an oil filling port and an oil discharge port, and the oil filling port and the oil discharge port are both locked with sealing covers.

[0010] Preferably, the transmission cylinder includes: a shaft cylinder and a connecting cylinder; one end of the shaft cylinder is locked with the connecting cylinder by bolts, and one end of the connecting cylinder is inserted into the shaft cylinder, a bearing is embedded in the end of the connecting cylinder close to one side of the shaft cylinder, and another bearing is embedded in the other end of the shaft cylinder, the transmission shaft is rotatably inserted in the two bearings, and the other end of the connecting cylinder is locked to the end face housing of the motor by bolts.

[0011] Preferably, the coupling is arranged in the connecting tube and is coaxially disposed.

[0012] Preferably, the transmission shaft further includes an integrally formed frustum shoulder, and two frustum shoulders are symmetrically sleeved on both ends of the transmission shaft for respectively pressing and abutting against the inner ends of the two bearings.

[0013] Preferably, the connecting cylinder and the shaft cylinder both include integrally formed stop shoulders for pressing and abutting against the outer ends of the two bearings respectively.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model transmits power directly to the inner / outer output shaft via the transmission shaft, which can reduce the use of transmission parts and achieve the advantages of light structure and compact structure; on the other hand, the output torque of the cutting saw can be improved by arranging the transmission shaft and the inner / outer output shaft in a vertical relationship. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A sectional view of the transmission structure of the double-wheeled mis-cutting saw provided by the utility model.

[0017] Figure 2 This is a structural cross-sectional view of the transmission structure provided by the utility model and the other components of the cutting saw being assembled.

[0018] In the figure: 1-transmission cylinder, 11-shaft cylinder, 12-connecting cylinder, 13-bearing, 14-stop shoulder, 2-transmission shaft, 21-cone shaft shoulder, 3-bevel gear, 4-coupling, 5-oil filling port, 6-oil unloading port, 7-saw blade drive box, 8-motor. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will become clearer. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0020] like Figures 1-2As shown, the embodiment of the utility model provides a transmission structure of a double-wheeled asymmetric cutting saw, comprising:

[0021] Transmission cylinder 1;

[0022] The transmission shaft 2 is axially rotatably inserted into the transmission tube 1; the output end of the transmission shaft 2 is provided with a bevel gear 3, which is connected to the inner / outer output shaft of the saw blade drive box 7 through the bevel gear 3, and the transmission shaft 2 is arranged in a vertical relationship with the inner / outer output shaft. Since the output end of the existing motor 8 is arranged in a parallel relationship with the inner / outer output shaft, the power is transmitted between the two through the belt transmission assembly and the bevel gear 3 transmission assembly, resulting in a low output torque of the cutting saw. The utility model directly transmits power to the inner / outer output shaft through the transmission shaft 2, which can reduce the use of transmission components on the one hand, achieving the advantages of light structure and compact structure; on the other hand, it can improve the output torque of the cutting saw. The specific structure of the bevel gear 3 connected to the inner / outer output shaft of the saw blade drive box 7 is exactly the same as the prior art disclosed in the lithium-powered dual-wheeled non-directional cutting saw with the publication number CN220659414U, so it will not be described in detail.

[0023] The coupling 4 connects the input end of the transmission shaft 2 and the output end of the motor 8.

[0024] The top and bottom of the transmission cylinder 1 also include an oil filling port 5 and an oil discharge port 6 for adding lubricating oil and discharging the lubricating oil, and the oil filling port 5 and the oil discharge port 6 are both locked with sealing covers.

[0025] The transmission cylinder 1 includes: a shaft cylinder 11 and a connecting cylinder 12; one end of the shaft cylinder 11 is locked with the connecting cylinder 12 by bolts, and one end of the connecting cylinder 12 is inserted into the shaft cylinder 11, and a bearing 13 is embedded in the end of the connecting cylinder 12 close to one side of the shaft cylinder 11, and another bearing 13 is embedded in the other end of the shaft cylinder 11. The transmission shaft 2 is rotatably inserted in the two bearings 13, and the other end of the connecting cylinder 12 is locked to the end face housing of the motor 8 by bolts; the above-mentioned two bearings 13 can improve the stability of the transmission shaft 2 during power transmission.

[0026] The coupling 4 is arranged in the connecting tube 12 and is coaxially disposed.

[0027] The transmission shaft 2 also includes an integrally formed cone shoulder 21, and the two cone shoulders 21 are symmetrically sleeved at both ends of the transmission shaft 2, and are used to press and abut against the inner ends of the two bearings 13. The connecting tube 12 and the shaft tube 11 both include an integrally formed stop shoulder 14, which is used to press and abut against the outer ends of the two bearings 13. Through the mutual cooperation of the two cone shoulders 21 and the two stop shoulders 14, the purpose of stopping and limiting the two bearings 13 during assembly can be achieved, avoiding the axial movement of the transmission shaft 2 during operation, thereby further enhancing the stability of power transmission when the transmission shaft 2 is in operation.

[0028] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A transmission structure of a double-wheeled, opposite-direction cutting saw, characterized in that: include: Transmission cylinder (1); The transmission shaft (2) is axially rotatably inserted into the transmission cylinder (1); the output end of the transmission shaft (2) is provided with a bevel gear (3), which is connected to the inner / outer output shaft of the saw blade drive box (7) through the bevel gear (3); and the transmission shaft (2) and the inner / outer output shaft are arranged in a vertical relationship; A coupling (4) connects the input end of the transmission shaft (2) and the output end of the motor (8).

2. The transmission structure of a double-wheeled reverse-cutting saw according to claim 1, characterized in that: The top and bottom of the transmission cylinder (1) also include an oil filling port (5) and an oil discharge port (6) which are opened, and sealing covers are locked on the oil filling port (5) and the oil discharge port (6).

3. The transmission structure of a double-wheeled reverse-cutting saw according to claim 1, characterized in that: The transmission cylinder (1) comprises: a shaft cylinder (11) and a connecting cylinder (12); one end of the shaft cylinder (11) is fastened with the connecting cylinder (12) by bolts, and one end of the connecting cylinder (12) is inserted into the shaft cylinder (11); a bearing (13) is embedded in the end of the connecting cylinder (12) close to one side of the shaft cylinder (11); another bearing (13) is embedded in the other end of the shaft cylinder (11); the transmission shaft (2) is rotatably inserted in the two bearings (13); and the other end of the connecting cylinder (12) is fastened to the end face housing of the motor (8) by bolts.

4. The transmission structure of a double-wheeled reverse-cutting saw as claimed in claim 3, characterized in that: The coupling (4) is arranged inside the connecting tube (12) and is coaxially disposed.

5. The transmission structure of a double-wheeled reverse-cutting saw as claimed in claim 3, characterized in that: The transmission shaft (2) also includes an integrally formed frustum shoulder (21), and the two frustum shoulders (21) are symmetrically sleeved on the two ends of the transmission shaft (2) and are used to press and abut against the inner ends of the two bearings (13) respectively.

6. The transmission structure of a double-wheeled reverse-cutting saw as claimed in claim 5, characterized in that: The connecting tube (12) and the shaft tube (11) both include an integrally formed stop shoulder (14) for respectively pressing and abutting against the outer ends of the two bearings (13).

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