Gear shifting type mechanical transmission speed change mechanism

Abstract

The utility model relates to the technical field of mechanical transmission speed change mechanisms, in particular to a gear shifting type mechanical transmission speed change mechanism which comprises a base plate, a leaning wheel shaft is arranged on the left side of the top face of the base plate, a second bearing is installed on the top of the leaning wheel shaft, and leaning wheel gears are installed at the upper portion and the bottom end of a rod body of the leaning wheel shaft respectively. Depended wheel gears at the upper part and the bottom of the depended wheel shaft are respectively connected with a first bearing at the upper part of the input transmission shaft, a chain wheel at the bottom, a gear combination wheel and a driving wheel gear; a gear shifting driving lever, a gear shifting handle and a spring are mounted on the right side of the top surface of the base plate; the mechanism has the advantages that the mechanism structure is compact, gear transmission is converted into chain wheel transmission output, and the rotating speed and the rotating direction output by the mechanism can be rapidly switched by adjusting the gear shifting deflector rod.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission speed change mechanisms, in particular to a gear-shifting mechanical transmission speed change mechanism. Background Art

[0002] Gears and sprockets are often used in mechanical transmission structures. However, the transmission methods in some special application scenarios often also require gear reversing, gear output ratio adjustment, compact space structure and other requirements. Utility Model Content

[0003] The utility model aims to provide a gear-shifting mechanical transmission speed-changing mechanism in view of the defects and shortcomings of the prior art.

[0004] The utility model discloses a gear-shifting mechanical transmission speed-changing mechanism, comprising a base plate, a supporting wheel shaft being arranged on the left side of the top surface of the base plate, a second bearing being installed on the top of the supporting wheel shaft, and supporting wheel gears being installed on the upper part and the bottom end of the rod body of the supporting wheel shaft respectively; the supporting wheel gears on the upper part and the bottom of the supporting wheel shaft are respectively connected to the first bearing installed on the upper part of the input transmission shaft, the sprocket wheel, the gear combination wheel and the driving wheel gear at the bottom; a shift lever, a shift handle and a spring are installed on the right side of the top surface of the base plate.

[0005] Furthermore, a semicircular arc support plate is provided at the left end of the base plate, and the upper part of the inner wall of the semicircular arc support plate is connected to the first bearing.

[0006] Furthermore, a shift lever, a shift handle, and a spring are installed on the right side of the top surface of the base plate to form a shift mechanism.

[0007] After adopting the above structure, the beneficial effects of the utility model are as follows: the utility model describes a gear-shifting mechanical transmission speed-changing mechanism, which has the advantages of compact structure, converting the gear transmission into a sprocket transmission output, and realizing quick switching of the speed and direction of the output of the mechanism by adjusting the shift lever. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application, but do not constitute an improper limitation of the present invention. In the drawings:

[0009] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0010] Figure 2 It is a three-dimensional schematic diagram of the first shifting mode of the utility model;

[0011] Figure 3 It is a three-dimensional schematic diagram of the second shifting mode of the utility model;

[0012] Figure 4 It is a three-dimensional schematic diagram of the movable wheel gear of the utility model;

[0013] Figure 5 It is a front structural schematic diagram of the movable wheel gear of the utility model.

[0014] Description of reference numerals:

[0015] Shift handle 1, shift lever 2, spring 3, sprocket and gear combination wheel 4, first bearing 5, input transmission shaft 6, leaning wheel shaft 7, second bearing 8, leaning wheel gear 9, driven wheel gear 10, movable wheel gear 11, base plate 12. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0017] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0018] like Figure 1 As shown, a shift-type mechanical transmission speed change mechanism described in this specific embodiment includes a base plate 12, a supporting wheel shaft 7 is arranged on the left side of the top surface of the base plate 12, a second bearing 8 is installed on the top of the supporting wheel shaft 7, and supporting wheel gears 9 are installed on the upper part and the bottom end of the rod body of the supporting wheel shaft 7 respectively; the supporting wheel gears 9 on the upper part and the bottom of the supporting wheel shaft 7 are respectively connected to the first bearing 5 installed on the upper part of the input transmission shaft 6, the sprocket at the bottom, the gear combination wheel 4 and the driving wheel gear 11; the shift lever 2, the shift handle 1 and the spring 3 are installed on the right side of the top surface of the base plate 12.

[0019] Furthermore, a semicircular arc support plate is provided at the left end of the base plate 12 , and the upper portion of the inner wall of the semicircular arc support plate is connected to the first bearing 5 .

[0020] Furthermore, a shift lever 2, a shift handle 1, and a spring 3 are installed on the right side of the top surface of the base plate 12 to form a shift mechanism.

[0021] The working principle of the utility model is as follows:

[0022] In this design, a supporting wheel shaft 7 is arranged on the left side of the top surface of the base plate 12, a second bearing 8 is installed on the top of the supporting wheel shaft 7, and supporting wheel gears 9 are installed on the upper and bottom ends of the rod body of the supporting wheel shaft 7 respectively; the supporting wheel gears 9 on the upper and bottom of the supporting wheel shaft 7 are respectively connected to the first bearing 5 installed on the upper part of the input transmission shaft 6, the sprocket at the bottom, the gear combination wheel 4 and the driving wheel gear 11; the shift lever 2, the shift handle 1 and the spring 3 are installed on the right side of the top surface of the base plate 12.

[0023] In this design, the power is transmitted to the movable wheel gear 11 through the input transmission shaft 6, and the movable wheel gear 11 is moved up and down by adjusting the shift handle 1, the shift lever 2 and the spring 3 (acting together). The speed and direction of the output of the sprocket and gear combination wheel 4 are switched. Figure 2 , Figure 3 Two gear shifting methods are shown.

[0024] Among them: Shifting mode 1: "Active wheel gear 11" is transmitted to "driven wheel gear 10" at the bottom and then to "relying wheel gear 9". Finally, it is transmitted to "sprocket and gear combination wheel 4"; at this time, the transmission output of "sprocket and gear combination wheel 4" obtains an output with a slower speed and opposite direction compared with "input transmission shaft 6".

[0025] Among them, the second shifting mode: the "active wheel gear 11" is transmitted to the "sprocket and gear combination wheel 4" at the upper part; at this time, the transmission output of the "sprocket and gear combination wheel 4" obtains an output with the same speed and direction as the "input transmission shaft 6".

[0026] In this design, the structure of the movable wheel gear 11 is shown as follows: Figure 4 , Figure 5 The hexagonal surface groove of the "active wheel gear 11" is clearance matched with the "input transmission shaft 6" to achieve up and down sliding; the inclined triangular teeth are clearance matched with the "sprocket and gear combination wheel 4".

[0027] The advantages of this design are: simple design, small space, fast and reliable gear shifting; suitable for multi-mode (changing speed, changing direction) transmission output requirements.

[0028] In this design, (1) "shift type" realizes transmission conversion through the shift device handle, lever, spring, and movable gear.

[0029] (2) "Transmission speed change" achieves speed and direction changes through the combination of the driven wheel gear, the driven wheel gear, and the transmission output gear.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gear-shifting mechanical transmission speed-changing mechanism, characterized in that: It includes a base plate, a supporting wheel shaft is arranged on the left side of the top surface of the base plate, a second bearing is installed on the top of the supporting wheel shaft, and supporting wheel gears are installed on the upper part and the bottom end of the rod body of the supporting wheel shaft respectively; the supporting wheel gears on the upper part and the bottom of the supporting wheel shaft are respectively connected to the first bearing installed on the upper part of the input transmission shaft, the sprocket, the gear combination wheel and the driving wheel gear at the bottom; the shift lever, the shift handle and the spring are installed on the right side of the top surface of the base plate.

2. A gear-shifting mechanical transmission speed-changing mechanism according to claim 1, characterized in that: A semicircular arc support plate is arranged at the left end of the base plate, and the upper part of the inner wall of the semicircular arc support plate is connected to the first bearing.

3. The gear-shifting mechanical transmission speed-changing mechanism according to claim 1, characterized in that: A shift lever, a shift handle and a spring are installed on the right side of the top surface of the base plate to form a shift mechanism.

Images