Spacing-adjustable parallel shaft speed reducer

Abstract

The utility model relates to the technical field of speed reduction equipment, in particular to an interval-adjustable parallel shaft speed reducer which comprises a main transmission box, an external guide pipe protruding outwards is arranged on the left side wall of the main transmission box, and a left side adjusting arm is movably assembled on the left side of the main transmission box and located at the position of a side transmission through hole. According to the distance-adjustable parallel shaft speed reducer, the left side adjusting arm is movably assembled through the external guide pipe on the left side wall of the main transmission box, the distance between the input shaft barrel and the output shaft barrel is adjusted through the left side adjusting arm, and the application range is widened; the distance can be adjusted under the condition that the number and the structure of the internal gears are not changed, and the production, manufacturing and transformation cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reduction equipment, in particular to a parallel shaft speed reducer with adjustable spacing. Background Art

[0002] Parallel shaft reducer is a common mechanical transmission device, which is widely used in industrial fields such as logistics, cement, building materials, etc. It has the characteristics of high efficiency, stability, reliability, strong load-bearing capacity, etc. However, the parallel shaft transmission spacing of parallel shaft reducers on the market is often fixed. If you want to change the spacing without changing the gear ratio, you often need to redesign the housing and change the size and number of internal gears, which increases production time and cost, and limits the scope of use. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the distance between the two parallel shafts of the parallel shaft reducer currently on the market is often fixed. If the distance is to be changed without changing the gear ratio, it is often necessary to redesign the housing and change the size and number of the internal gears, which greatly increases the production cost and has a very limited scope of application.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a spacing adjustable parallel shaft reducer, including a main transmission box, the left side wall of the main transmission box is provided with an external guide tube protruding outward, the left side of the main transmission box is located at the side transmission through hole position and is movably equipped with a left adjustment arm, the lower end of the right side of the main transmission box is fixed with an input shaft tube, the left adjustment arm is movably assembled with the external guide tube through the assembly blind hole on the right connecting end, the left end of the left adjustment arm is provided with an output shaft tube protruding to the left, and the connection surface between the left adjustment arm and the main transmission box has mutually matching bolt fixing flanges.

[0005] The main transmission box is provided with an input gear located inside the input shaft tube, a transmission internal gear located inside the external guide tube and a synchronous transmission shaft axially fixed inside the transmission internal gear, and the input gear and the transmission internal gear are meshed with each other.

[0006] The left adjusting arm is internally provided with a transmission synchronous gear which rotates synchronously with the transmission internal gear through a synchronous transmission shaft, a middle transmission gear and an output gear which is located inside the output shaft cylinder and meshes with the middle transmission gear.

[0007] The inner side surface of the main transmission box is located at the inner opening position of the external guide tube and has an internal guide ring protruding toward the transmission internal gear, and the side wall of the transmission internal gear has an internal stabilizing ring matched with the internal guide ring.

[0008] A lateral positioning hole for improving the stability of the transmission synchronous gear is opened on the left inner wall of the left adjustment arm. The transmission synchronous gear is inserted into the lateral positioning hole through the lateral positioning shaft at the left end and movably assembled with the inside of the left adjustment arm.

[0009] The upper end of the main transmission box is provided with an arc-shaped support frame for improving the installation strength of the left-side adjustment arm, and the right side end of the left-side adjustment arm is provided with a lateral locking bolt penetrating the arc-shaped support frame.

[0010] The beneficial effects of the utility model are:

[0011] (1) The utility model is a parallel shaft speed reducer with adjustable spacing. The left adjustment arm is movably assembled through the external guide tube on the left wall of the main transmission box. The left adjustment arm is used to adjust the spacing between the input shaft cylinder and the output shaft cylinder from position A to position A', thereby improving the applicable range.

[0012] (2) The spacing can be adjusted without changing the number and structure of internal gears, greatly reducing the production and modification costs;

[0013] (3) The left adjusting arm is mounted on the outer guide tube and the arc-shaped support frame at the upper end of the main transmission box through the assembly blind hole on the right connecting end, which can effectively improve the installation strength of the left adjusting arm and ensure the operation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a front view of the utility model.

[0016] Figure 2 It is a rear view of the utility model.

[0017] Figure 3 It is a schematic diagram of the internal structure of the utility model. DETAILED DESCRIPTION

[0018] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Figure 1 , Figure 2 and Figure 3 The illustrated embodiment shows a parallel shaft reducer with adjustable spacing, comprising a main transmission case 1, the left side wall of which is provided with an external guide tube 2 protruding outward, a left side adjusting arm 3 movably mounted on the left side of the main transmission case 1 at a side transmission through hole position, an input shaft tube 4 fixedly mounted on the lower right end of the main transmission case 1, the left side adjusting arm 3 is movably mounted on the external guide tube 2 through an assembly blind hole on the right connecting end, the left side adjusting arm 3 has an output shaft tube 5 protruding to the left at the left end, and the connecting surface between the left side adjusting arm 3 and the main transmission case 1 has a bolt fixing flange 6 that cooperates with each other.

[0021] The upper locking bolt of the bolt fixing flange 6 is arranged on the outer side of the left adjusting arm 3, and a fixing inner screw hole is installed on the outer side surface of the main transmission box 1. The bolt is screwed into the fixing inner screw hole through the assembly through hole on the bolt fixing flange 6 to fix the left adjusting arm 3 to the main transmission box 1.

[0022] In order to cooperate with the transmission inside the main transmission box 1, the main transmission box 1 is provided with an input gear 7 located on the inner side of the input shaft tube 4, a transmission internal gear 8 located on the inner side of the external guide tube 2 and a synchronous transmission shaft 9 axially fixed inside the transmission internal gear 8, and the input gear 7 and the transmission internal gear 9 are meshed with each other.

[0023] In order to cooperate with the transmission inside the left adjusting arm 3, the left adjusting arm 3 is provided with a transmission synchronous gear 10 that rotates synchronously with the transmission internal gear 8 through the synchronous transmission shaft 9, a middle transmission gear and an output gear 11 located on the inner side of the output shaft tube 5 and meshing with the middle transmission gear.

[0024] The right end of the synchronous transmission shaft 9 is axially fixed to the transmission internal gear 8, while the left end of the synchronous transmission shaft 9 is slidably assembled with the transmission blind hole inside the transmission synchronous gear 10, which can be adjusted by lateral sliding, but keeps the limit position when rotating, so as to cooperate with the synchronous rotation.

[0025] Transmission principle: the input shaft inside the input shaft tube 4 drives the input gear 7 to rotate, the conveying gear 7 drives the transmission internal gear 8 to rotate, the transmission internal gear 8 drives the transmission synchronous gear 10 to rotate synchronously through the synchronous transmission shaft 9, and then the transmission synchronous gear 10 drives the middle transmission gear, the output gear 11 and the output shaft inside the output shaft tube 5 axially fixed with the output gear 11 to rotate.

[0026] In order to improve internal stability and airtightness, the inner side of the main transmission box 1 has an internal guide ring 12 protruding toward the transmission internal gear 8 at the inner opening position of the external guide tube 2, and the side wall of the transmission internal gear 8 has an internal stabilizing ring 13 that cooperates with the internal guide ring 12.

[0027] In order to improve the internal transmission stability, a lateral positioning hole for improving the stability of the transmission synchronous gear 10 is opened on the left inner wall of the left adjusting arm 3. The transmission synchronous gear 10 is inserted into the lateral positioning hole through the lateral positioning shaft at the left end and movably assembled with the left adjusting arm 3.

[0028] In order to improve the adjustment strength, the upper end of the main transmission box 1 is provided with an arc-shaped support frame 14 for improving the installation strength of the left adjustment arm 3, and the right side end of the left adjustment arm 3 is provided with a lateral locking bolt 15 penetrating the arc-shaped support frame 14.

[0029] The left side adjusting arm 3 passes through the arc-shaped adjusting opening inside the arc-shaped supporting frame 14 through the right side locking bolt 15 , and then the locking nut is threadedly locked to fix the left side adjusting arm 3 and the arc-shaped supporting frame 14 together.

[0030] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A parallel shaft speed reducer with adjustable spacing, comprising a main transmission box (1), characterized in that: The left side wall of the main transmission box (1) is provided with an external guide tube (2) protruding outwards, the left side of the main transmission box (1) is movably equipped with a left side adjustment arm (3) at the position of the side transmission through hole, the lower right end of the main transmission box (1) is fixedly equipped with an input shaft tube (4), the left side adjustment arm (3) is movably assembled with the external guide tube (2) through the assembly blind hole on the right connection end, the left side adjustment arm (3) is provided with an output shaft tube (5) protruding to the left at the left end, and the connection surface between the left side adjustment arm (3) and the main transmission box (1) is provided with a bolt fixing flange (6) that matches each other.

2. The pitch-adjustable parallel shaft reducer according to claim 1, characterized in that: The main transmission box (1) is provided with an input gear (7) located inside the input shaft tube (4), a transmission internal gear (8) located inside the external guide tube (2), and a synchronous transmission shaft (9) axially fixed inside the transmission internal gear (8).

3. The pitch-adjustable parallel shaft reducer according to claim 2, characterized in that: The left regulating arm (3) is internally provided with a transmission synchronous gear (10) which rotates synchronously with the transmission internal gear (8) via a synchronous transmission shaft (9), a middle transmission gear, and an output gear (11) which is located inside the output shaft cylinder (5) and meshes with the middle transmission gear.

4. The pitch-adjustable parallel shaft reducer according to claim 2, characterized in that: The inner side surface of the main transmission box (1) is located at the inner opening position of the external guide tube (2) and has an internal guide ring (12) protruding toward the transmission internal gear (8), and the side wall of the transmission internal gear (8) has an internal stabilizing ring (13) that matches the internal guide ring (12).

5. The pitch-adjustable parallel shaft reducer according to claim 3 is characterized in that: A lateral positioning hole for improving the stability of the transmission synchronous gear (10) is provided on the left inner wall of the left adjustment arm (3); the transmission synchronous gear (10) is inserted into the lateral positioning hole through a lateral positioning shaft at the left end and movably assembled with the inside of the left adjustment arm (3).

6. The pitch-adjustable parallel shaft reducer according to claim 1, characterized in that: The upper end of the main transmission box (1) is provided with an arc-shaped support frame (14) for improving the installation strength of the left adjustment arm (3), and the right side end of the left adjustment arm (3) is provided with a lateral locking bolt (15) penetrating the arc-shaped support frame (14).

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