Helical gear transmission mechanism

Abstract

The utility model discloses a bevel gear transmission mechanism, which belongs to the technical field of wood-working mechanical equipment, and comprises a gear seat and a bevel gear shaft, a lifting support plate is fixedly connected in the gear seat through a bolt, a lead screw is rotatably connected on the lifting support plate through a rolling bearing, and the lead screw is fixedly connected with the bevel gear shaft. One end of the lead screw extends out of the gear seat, the other end of the lead screw penetrates through the lifting supporting plate, a bevel gear is fixedly connected to the periphery of the lead screw, one end of the bevel gear shaft is provided with the gear seat, the periphery of the part, located in the gear seat, of the bevel gear shaft is connected with the periphery of the bevel gear in a meshed mode, and the other end of the bevel gear shaft is fixedly connected with a handle. By means of mutual matching of the bevel gear shaft and the bevel gear, efficient transmission efficiency and precision can be guaranteed while the axial play gap of the bevel gear shaft can be eliminated, the lifting precision of a machine core during working of the woodworking cut-to-size saw is improved, and therefore the working efficiency and machining precision of the cut-to-size saw used by a user are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to woodworking machinery equipment technical field more specifically, relate to a helical gear transmission mechanism. BACKGROUND

[0002] In the mechanical industry, vertical reversing transmission is very common function, to realize this function, mode has numerous, among them utilizes helical gear shaft transmission principle is extremely common.

[0003] Woodworking cutting board saw machine core's lifting is also utilizing this principle, usually is power through sprocket to helical gear shaft, helical gear shaft rotation drives matched helical gear rotation, thereby drives machine core up and down lifting.

[0004] Based on above, the inventor finds that: in the relative motion process of helical gear shaft and helical gear in prior art structure, the relative movement gap will be generated, the precision of machine core in lifting process is completely guaranteed by the machining precision of helical gear shaft and helical gear;In addition, since helical gear shaft transmission mechanism is a large high-precision component, it needs to do all-round dustproof during working, and also needs transmission torque, so its machining process and assembly process requirement is very high, therefore, in view of this, the prior art structure is improved, a helical gear transmission mechanism is provided, to achieve the purpose of more practical value. CONTENT OF THE UTILITY MODEL

[0005] 1. Technical problem to be solved

[0006] In view of the problems in the prior art, the purpose of the utility model is to provide a helical gear transmission mechanism, which can utilize the mutual cooperation of the gear seat, the helical gear shaft and the helical gear, eliminate the axial movement gap of the helical gear shaft, ensure high transmission efficiency and precision, improve the precision of the machine core lifting during the working of the woodworking cutting board saw, and improve the working efficiency and processing accuracy of the user using the cutting board saw.

[0007] 2. Technical scheme

[0008] To solve the above problems, the utility model adopts the following technical scheme.

[0009] A helical gear transmission mechanism, comprising a gear seat and a helical gear shaft, the inside of the gear seat is fixedly connected with a lifting support plate through bolts, the lifting support plate is rotatably connected with a lead screw through a rolling bearing, one end of the lead screw extends to the outside of the gear seat, the other end of the lead screw penetrates through the lifting support plate, and the outer periphery is fixedly connected with a helical gear, one end of the helical gear shaft penetrates through the gear seat, and the outer periphery is rotatably connected with the gear seat through a sliding bearing, the outer periphery of the part of the helical gear shaft located in the gear seat is meshingly connected with the outer periphery of the helical gear, and the other end of the helical gear shaft is fixedly connected with a handle.

[0010] Furthermore, two rolling bearings are provided and are respectively installed on both sides of the lifting support plate, and one end of the lead screw is fixedly connected to the inner ring of the rolling bearing.

[0011] Furthermore, the other end of the lead screw extends to the outside of the gear seat, and the extended portion is locked and fixed by a self-locking nut and a washer.

[0012] Furthermore, the portion of the helical gear shaft located outside the gear seat is locked by a washer and a self-locking nut, while the other end of the helical gear shaft is fixedly connected to the handle by a screw and a washer.

[0013] Furthermore, a retaining ring is provided at the connection between the helical gear shaft and the gear seat on the side near the handle.

[0014] Furthermore, the helical gear shaft and the lead screw are vertically misaligned.

[0015] Furthermore, the end of the helical gear away from the lifting support plate is rotatably connected to the inner wall of the gear seat via a sintered bearing.

[0016] 3. Beneficial effects

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] This solution, through the mutual cooperation of the gear seat, helical gear shaft, and helical gear, makes the entire structure simple and compact, and quick and convenient to install and adjust. It can eliminate the axial movement clearance of the helical gear shaft while ensuring high transmission efficiency and accuracy, and improve the accuracy of the core lifting and lowering when the woodworking panel saw is working, thereby improving the user's work efficiency and processing accuracy. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a top view of the structure of this utility model;

[0021] Figure 3 This is a side view of the structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the disassembled structure of this utility model;

[0023] Figure 5 This is a partial cross-sectional view of the present invention.

[0024] Explanation of the labels in the diagram:

[0025] 1. Gear housing;

[0026] 2. Lifting support plate;

[0027] 3. Rolling bearing;

[0028] 4. Screw;

[0029] 5. Helical gear;

[0030] 6. Helical gear shaft;

[0031] 7. Handle;

[0032] 8. Retainer;

[0033] 9. Sintered bearing. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0035] Embodiment:

[0036] Please refer to Figures 1-5 A helical gear transmission mechanism, comprising a gear seat 1 and a helical gear shaft 6, the inside of the gear seat 1 is fixedly connected with a lifting support plate 2 through bolts, the lifting support plate 2 is rotatably connected with a screw 4 through rolling bearings 3, one end of the screw 4 extends to the outside of the gear seat 1, the other end of the screw 4 penetrates the lifting support plate 2, and the outer periphery is fixedly connected with a helical gear 5, one end of the helical gear shaft 6 penetrates the gear seat 1, and the outer periphery is rotatably connected with the gear seat 1 through a sliding bearing, the outer periphery of the part of the helical gear shaft 6 located in the gear seat 1 is meshingly connected with the outer periphery of the helical gear 5, and the other end of the helical gear shaft 6 is fixedly connected with a handle 7.

[0037] Please refer to Figure 4 The rolling bearings 3 are provided with two, and are respectively installed on the two sides of the lifting support plate 2, and the outer periphery of one end of the screw 4 is fixedly connected with the inner ring of the rolling bearing 3, wherein the inner side of the rolling bearing 3 is provided with a bearing washer, so as to realize the sealing of the connection structure of the screw 4 and the lifting support plate 2, and improve the stability and service life of the helical gear shaft 6 during transmission movement.

[0038] Please refer to Figure 4 The other end of the screw 4 extends to the outside of the gear seat 1, and the extension part is locked and fixed through a self-locking nut and a gasket.

[0039] Please refer to Figure 4The part of the bevel gear shaft 6 located outside the gear seat 1 is locked by a gasket and a self-locking nut, and the other end of the bevel gear shaft 6 is fixedly connected with the handle 7 through a screw and a gasket. By adjusting the locking nut, the gap shift problem of the bevel gear shaft 6 during bidirectional power transmission is effectively eliminated, the friction between the bevel gear shaft 6 and the gear seat 1 during rotation of the bevel gear shaft 6 is reduced, and the power transmission efficiency is improved.

[0040] Referring to Figure 5 A retaining ring 8 is arranged at the connection between the bevel gear shaft 6 and the side of the gear seat 1 close to the handle 7.

[0041] Referring to Figure 2 The bevel gear shaft 6 is vertically and staggeredly arranged with the lead screw 4.

[0042] Referring to Figure 4 The end of the bevel gear 5 away from the lifting support plate 2 is rotatably connected with the inner wall of the gear seat 1 through a sintered bearing 9.

[0043] Working principle: during use, the handle 7 is rotated to drive the bevel gear shaft 6 to rotate, so that the power is transmitted to the bevel gear shaft 6, the power transmission is smoother and more uniform, the structure is smaller, the use space is saved, the locking nut is adjusted, the gap shift problem of the bevel gear shaft 6 during bidirectional power transmission is effectively eliminated, the friction between the bevel gear shaft 6 and the gear seat 1 during rotation of the bevel gear shaft 6 is reduced, the power transmission efficiency is improved, the stability and high precision of the power transmission between the bevel gear shaft 6 and the bevel gear 5 are obviously improved, the movement precision of the movement is ensured, and the accuracy of cutting the wood angle is improved; at the same time, the lifting support plate 2 and the gear seat 1 can effectively ensure that there is no abnormal sound and vibration during repeated operation, the service life of the transmission structure formed by the combination of the bevel gear 5 and the bevel gear shaft 6 is improved, and the loss of movement precision is further reduced.

[0044] During high-load movement transmission, the sealing structure adopts a mechanical sealing gear seat 1 structure to provide an effective sealing environment for stable and reliable movement; a double sliding bearing structure is adopted to ensure that the bevel gear shaft 6 can rotate flexibly while bearing the pressure of the movement from top to bottom; the gap between the bevel gear 5 and the rolling bearing 3 is adjusted to effectively eliminate the gap shift problem of the bevel gear shaft 6 during bidirectional power transmission, reduce the power loss caused by friction without loss of movement precision, improve the lifting precision of the movement during work of the woodworking cutting board saw, and thus improve the working efficiency and processing precision of the user when using the cutting board saw.

[0045] Finally should be explained is: in the description of the utility model, it is to be explained that, the term "vertical", "upper", "lower", "horizontal" and so on indicate the position relation or location relation is based on the position relation or location relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation structure and operation, therefore can not be understood as the limitation of the utility model.

[0046] In the description of the utility model, it is to be explained that, unless otherwise explicitly provided and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected, can be mechanically connected, can also be electrically connected, can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0047] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this. Any skilled in the art in the technical range disclosed by the utility model, according to the technical scheme of the utility model and its improvement concept, equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A helical gear transmission mechanism comprising a gear carrier (1) and a helical gear shaft (6), characterized in that: The inside of the gear seat (1) is fixedly connected with a lifting support plate (2) through bolts, the lifting support plate (2) is rotatably connected with a lead screw (4) through rolling bearings (3), one end of the lead screw (4) extends to the outside of the gear seat (1), the other end of the lead screw (4) penetrates the lifting support plate (2) and is fixedly connected with a helical gear (5) on the outer periphery, one end of the helical gear shaft (6) penetrates the gear seat (1) and is rotatably connected with the gear seat (1) through a sliding bearing on the outer periphery, the outer periphery of the part of the helical gear shaft (6) located in the gear seat (1) is meshingly connected with the outer periphery of the helical gear (5), and the other end of the helical gear shaft (6) is fixedly connected with a handle (7).

2. A helical gear drive mechanism according to claim 1, wherein: The rolling bearings (3) are provided with two, and are respectively installed on both sides of the lifting support plate (2), and the outer periphery of one end of the lead screw (4) is fixedly connected with the inner ring of the rolling bearing (3).

3. A helical gear drive mechanism according to claim 1, wherein: The other end of the lead screw (4) extends to the outside of the gear seat (1), and the extension part is locked and fixed by a self-locking nut and a gasket.

4. A helical gear drive mechanism according to claim 1, wherein: The part of the helical gear shaft (6) located outside the gear seat (1) is locked by a self-locking nut through a gasket, and the other end of the helical gear shaft (6) is fixedly connected with the handle (7) through a screw and a gasket.

5. A helical gear drive mechanism according to claim 1, wherein: The helical gear shaft (6) is provided with a retainer (8) at the connection position close to the handle (7) of the gear seat (1).

6. A helical gear drive mechanism according to claim 1, wherein: The helical gear shaft (6) and the lead screw (4) are vertically and staggered distributed.

7. A helical gear drive mechanism according to claim 1, wherein: The end of the helical gear (5) away from the lifting support plate (2) is rotatably connected with the inner side wall of the gear seat (1) through a sintered bearing (9).

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