Double-speed right-angle reducing mechanism

Abstract

The utility model relates to the technical field of speed reducers, and discloses a double-speed right-angle speed reducing mechanism which comprises an input shaft and an output shaft, a driving gear is sleeved on the input shaft, and a transmission gear assembly is arranged between the output shaft and the driving gear. The transmission gear assembly comprises a fixing rod, a first transmission gear connected to the lower end of the fixing rod and a second transmission gear arranged on the fixing rod in a sleeving mode through a sliding connecting piece, the first transmission gear is connected with the fixing rod through a telescopic structure, and the top end of the fixing rod is connected with the output shaft. The telescopic structure is adjusted to drive the first transmission gear to ascend, so that the first transmission gear is separated from the driving gear, the limiting rod is pulled out, the sliding block is moved downwards in the sliding groove, the sliding block drives the sleeve and the second transmission gear to move downwards, and when the sliding block reaches the bottom end of the sliding groove, the second transmission gear is just meshed with the driving gear. Therefore, the rotating speed of the output shaft is changed, and double-speed switching is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a double-speed right-angle reduction mechanism. Background Art

[0002] In the actual operation of the right-angle reducer, it is usually necessary to change the right-angle reducer with different input, direction, and reduction ratio according to the real-time environment, direction, and speed requirements. This requires at least two motors to switch to achieve dual-speed output. The disassembly and assembly of the reducer is cumbersome, time-consuming and labor-intensive. Utility Model Content

[0003] The purpose of the utility model is to provide a double-speed right-angle reduction mechanism to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a two-speed right-angle reduction mechanism, comprising an input shaft and an output shaft, wherein a driving gear is mounted on the input shaft, and a transmission gear assembly is arranged between the output shaft and the driving gear, wherein the transmission gear assembly comprises a fixed rod, a first transmission gear connected to the lower end of the fixed rod, and a second transmission gear mounted on the fixed rod through a sliding connection, wherein the first transmission gear is connected to the fixed rod through a telescopic structure, and the top end of the fixed rod is connected to the output shaft.

[0005] The following improvements are made in the present application scheme: the sliding connection includes a sliding groove opened on the fixed rod, a sliding block matching the sliding groove, and a sleeve whose inner side is fitted with the fixed rod; one end of the sliding block is slidingly connected to the sliding groove, and the other end is fixedly connected to the sleeve; the second transmission gear is fixedly connected to the lower end of the sleeve.

[0006] The following improvement is made in the solution of the present application: a limit rod is provided on the side of the sleeve, the limit rod passes through the sleeve and the slider and is inserted into the slide groove, and a limit groove cooperating therewith is provided at the bottom end of the slide groove.

[0007] The following improvement is made in the solution of the present application: the circumference of the second transmission gear is twice that of the first transmission gear, and the distance between the outer teeth of the first transmission gear and the second transmission gear is the same.

[0008] The following improvements are made in the present application: a connecting structure is provided between the fixing rod and the output shaft, the connecting structure includes a groove opened at the bottom end of the output shaft, receiving grooves opened on both sides of the fixing rod, and a clamping block arranged in the receiving groove, one end of the inner side of the clamping block is rotatably connected to the inner wall of the receiving groove, and the other end is connected to the inner wall of the receiving groove through an elastic member, and the side wall of the groove is provided with a channel passing through the output shaft, and the channel corresponds to the clamping block.

[0009] The following improvement is made in the solution of the present application: the inner wall of the groove and the fixing rod are provided with mutually matching threads.

[0010] Compared with the prior art, the utility model provides a dual-speed right-angle reduction mechanism having the following features:

[0011] Beneficial effects:

[0012] The utility model drives the first transmission gear to rise by adjusting the telescopic structure, so that the first transmission gear is separated from the driving gear, and then the limit rod is pulled out, and the slider is moved downward in the slide groove. The slider drives the sleeve and the second transmission gear downward. When the slider 41 reaches the bottom end of the slide groove 4, the second transmission gear 32 is just meshed with the driving gear 11, thereby changing the rotation speed of the output shaft, realizing dual-speed switching, and effectively improving working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 is a schematic diagram of the assembly of the first transmission gear and the driving gear;

[0016] Figure 3 is a cross-sectional view of a sliding connection;

[0017] Figure 4 A cross-sectional view of the connection structure.

[0018] In the figure: 1, input shaft; 11, driving gear; 2, output shaft; 3, fixing rod; 31, first transmission gear; 32, second transmission gear; 4, slide groove; 41, slider; 42, sleeve; 43, limit rod; 44, limit groove; 5, groove; 51, storage groove; 52, block; 53, elastic member; 54, channel; 55, thread. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Example

[0022] like Figure 1-3 As shown, a two-speed right-angle reduction mechanism is mainly composed of an input shaft 1, an output shaft 2 and a gear transmission assembly, wherein a driving gear 11 is sleeved on the input shaft 1, and a transmission gear assembly is provided between the output shaft 2 and the driving gear 11, the transmission gear assembly comprises a fixed rod 3, a first transmission gear 31 connected to the lower end of the fixed rod 3, and a second transmission gear 32 sleeved on the fixed rod 3, wherein the top end of the fixed rod 3 is fixedly connected to the output shaft 2, the circumference of the second transmission gear 32 is twice the circumference of the first transmission gear 31, and the distance between the outer teeth of the first transmission gear 31 and the second transmission gear 32 is the same. Since the input shaft 1 and the output shaft 2 are vertically arranged, the driving gear 11 is respectively matched with the first transmission gear 31 and the second transmission gear 32 as helical gears, and the tooth width of the driving gear 11 is greater than the sum of the tooth widths of the first transmission gear 31 and the second transmission gear 32, so that when switching the transmission gear, it can be ensured that the driving gear 11 and the two transmission gears can be fully meshed.

[0023] The first transmission gear 31 is connected to the fixed rod 3 through a telescopic structure, and the telescopic structure adopts a conventional automatic telescopic rod, one end of which is fixedly connected to the first transmission gear 31, driving the first transmission gear 31 to move up and down, and the other end is embedded in the bottom end of the fixed rod 3 to form a fixation; the second transmission gear 32 is connected to the fixed rod 3 through a sliding connection member, so that the second transmission gear 32 can move on the fixed rod 3, the sliding connection member includes a slide groove 4 opened on the fixed rod 3, a slider 41 matched with the slide groove 4, and a sleeve 42 with the inner side fitted with the fixed rod 3, wherein one end of the slider 41 is slidably connected to the slide groove 4, and the other end is connected and fixed to the sleeve 42, the second transmission gear 32 is fixedly connected to the lower end of the sleeve 42, and a limiting rod 43 is provided on the side of the sleeve 42, the limiting rod 43 passes through the sleeve 42 and the slider 41 and is inserted into the slide groove 4, and a limiting groove 44 matching therewith is provided at the bottom end of the slide groove 4.

[0024] When in use, firstly, the first transmission gear 31 is driven to rise by adjusting the automatic telescopic rod, so that the first transmission gear 31 is separated from the driving gear 11, and then the limit rod 43 is pulled out, and the slider 41 is moved downward in the slide groove 4. The slider 41 drives the sleeve 42 and the second transmission gear 32 downward. When the slider 41 reaches the bottom of the slide groove 4, the second transmission gear 32 is just meshed with the driving gear 11, thereby changing the rotation speed of the output shaft and realizing dual-speed switching.

[0025] In order to further improve the overall flexibility of the mechanism and facilitate subsequent maintenance and replacement, such as Figure 4 As shown, a connecting structure is arranged between the fixing rod 3 and the output shaft 2, and the connecting structure includes a groove 5 opened at the bottom end of the output shaft 2, a receiving groove 51 opened on both sides of the fixing rod 3, and a clamping block 52 arranged in the receiving groove 51. The side wall of the groove 5 is provided with a channel 54 penetrating the output shaft 2, and the channel 54 corresponds to the clamping block 52, and the inner wall of the groove 5 and the fixing rod 3 are provided with mutually matching threads 55, one end of the inner side of the clamping block 52 is rotatably connected to the inner wall of the receiving groove 51, and the other end is connected to the inner wall of the receiving groove 51 through an elastic member 53, and the elastic member 53 is a spring. When in use, the clamping block 52 and the spring are squeezed to press the clamping block 52 into the receiving groove 51, and then the fixing rod 3 is screwed into the groove 5 of the output shaft 2. After it is in place, the clamping block 52 is stretched outward by the elastic force of the spring, and then extends out from the channel 54 to form a fixation.

Claims

1. A two-speed right-angle reduction mechanism, comprising an input shaft (1) and an output shaft (2), wherein a driving gear (11) is mounted on the input shaft (1), and characterized in that: A transmission gear assembly is provided between the output shaft (2) and the driving gear (11), the transmission gear assembly comprising a fixed rod (3), a first transmission gear (31) connected to the lower end of the fixed rod (3), and a second transmission gear (32) sleeved on the fixed rod (3) via a sliding connection piece, the first transmission gear (31) and the fixed rod (3) being connected via a telescopic structure, and the top end of the fixed rod (3) being connected to the output shaft (2).

2. A dual-speed right-angle reduction mechanism according to claim 1, characterized in that: The sliding connection member comprises a sliding groove (4) provided on the fixed rod (3), a sliding block (41) matched with the sliding groove (4), and a sleeve (42) whose inner side is in contact with the fixed rod (3); one end of the sliding block (41) is slidingly connected with the sliding groove (4), and the other end is fixedly connected with the sleeve (42); the second transmission gear (32) is fixedly connected to the lower end of the sleeve (42).

3. A dual-speed right-angle reduction mechanism according to claim 2, characterized in that: A limiting rod (43) is provided on the side of the sleeve (42), and the limiting rod (43) penetrates the sleeve (42) and the slider (41) and is inserted into the slide groove (4). A limiting groove (44) matching with the limiting rod is provided at the bottom end of the slide groove (4).

4. A dual-speed right-angle reduction mechanism according to claim 1, characterized in that: The circumference of the second transmission gear (32) is twice that of the first transmission gear (31), and the distance between the outer teeth of the first transmission gear (31) and the second transmission gear (32) is the same.

5. A dual-speed right-angle reduction mechanism according to claim 1, characterized in that: A connection structure is provided between the fixing rod (3) and the output shaft (2), the connection structure comprising a groove (5) provided at the bottom end of the output shaft (2), receiving grooves (51) provided at both sides of the fixing rod (3), and a clamping block (52) arranged in the receiving groove (51); one end of the inner side of the clamping block (52) is rotatably connected to the inner wall of the receiving groove (51), and the other end is connected to the inner wall of the receiving groove (51) through an elastic member (53); a channel (54) penetrating the output shaft (2) is provided on the side wall of the groove (5), and the channel (54) corresponds to the clamping block (52).

6. A dual-speed right-angle reduction mechanism according to claim 5, characterized in that: The inner wall of the groove (5) and the fixing rod (3) are provided with threads (55) that match each other.

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