Speed reducer with adaptive connection

Abstract

The utility model relates to the technical field of speed reducers, in particular to a speed reducer with adaptive connection, which comprises a speed reducer body and a connecting shaft, an output shaft is arranged on the surface of the speed reducer body, and a spline groove is arranged on the surface of the connecting shaft. The connecting shaft is aligned with the output shaft and inserted into the output shaft, the spline groove is formed in the connecting shaft, and therefore it is guaranteed that the spline groove of the connecting shaft is aligned with the limiting plate in the output shaft during insertion, and after the connecting shaft is completely inserted into the output shaft, the clamping plate and the limiting plate are made to move through the two driving mechanisms; the clamping plate is in contact with the connecting shaft, the limiting plate is clamped in the spline groove of the connecting shaft, then the connecting shaft can be installed, at the moment, when the output shaft drives the connecting shaft to rotate, the connecting shaft can be directly driven to rotate due to cooperation between the limiting plate and the spline groove, and the distance between the limiting plate and the clamping plate is adjustable; and therefore, connection shafts with different sizes can be conveniently mounted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of speed reducer especially possesses the speed reducer of adaptive connection. BACKGROUND

[0002] Speed reducer is a kind of independent component by the gear transmission, worm drive, gear-worm drive enclosed in rigid shell, commonly used as the speed reducer transmission device between prime mover and working machine. Between prime mover and working machine or actuator, it plays the role of matching speed and transmitting torque, and is widely used in modern machinery. Speed reducer is generally used for low-speed and large-torque transmission equipment. The purpose of speed reduction is achieved by engaging the gear with fewer teeth on the input shaft of the motor, internal combustion engine or other high-speed rotating power with the large gear on the output shaft. Ordinary speed reducer also has several pairs of gears with the same principle to achieve ideal speed reduction effect. The ratio of the number of teeth of the large gear to the small gear is the transmission ratio.

[0003] The output shaft of the speed reducer needs to be connected with the connecting shaft to achieve power transmission. The traditional connection method is spline connection, that is, the connecting shaft is directly inserted into the output shaft, and the output shaft and the connecting shaft will not rotate relative to each other by the cooperation between the spline and the spline groove. However, different speed reducer output shafts need to be equipped with connecting shafts that match them. If the size of the connecting shaft is too large or too small, it cannot be connected, and thus it cannot adapt to various connecting shafts, which is not convenient for actual use. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a speed reducer with adaptive connection, which solves the problem that different speed reducer output shafts need to be equipped with connecting shafts that match them, and if the size of the connecting shaft is too large or too small, it cannot be connected, and thus it cannot adapt to various connecting shafts, which is not convenient for actual use.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A speed reducer with adaptive connection, comprising a speed reducer body and a connecting shaft, the surface of the speed reducer body is provided with an output shaft, the surface of the connecting shaft is provided with a spline groove, the speed reducer body is provided in a cylindrical structure and fixedly installed with extension shells on the upper and lower sides, the interiors of the two extension shells are slidably connected with a limiting plate and a clamping plate, and the interiors of the two extension shells are respectively provided with driving mechanisms for driving the limiting plate and the clamping plate to move.

[0007] Preferably, the end of the output shaft is fixedly installed with a triangular chuck.

[0008] Preferably, the bottom sides of the limiting plate are provided as inclined surfaces, and the end of the clamping plate is provided as a "V"-shaped structure.

[0009] Preferably, the driving mechanism comprises a transmission shaft, the inner wall of the extension shell is fixedly provided with a fixed plate, the transmission shaft and the fixed plate are rotationally connected, the surface of the transmission shaft is fixedly provided with a worm, the inner wall of the extension shell is rotationally provided with a screw rod, the surface of the screw rod is fixedly provided with a worm wheel, the worm and the worm wheel are engaged, and the limiting plate and the clamping plate are respectively threadedly connected with the screw rods in the two driving mechanisms.

[0010] Preferably, the end of the transmission shaft is fixedly provided with a connecting block, the end of the connecting block is provided with a sliding groove, the sliding groove is slidably connected with a sliding rod, the end of the sliding rod is fixedly provided with a spring, the end of the spring away from the sliding rod is fixedly connected with the sliding groove, the end of the sliding rod away from the spring is fixedly provided with a connecting head, the surface of the connecting head is fixedly provided with a limiting tooth, the surface of the extension shell is provided with a through hole relative to the position of the connecting head, the through hole is provided with a limiting tooth groove matching the size of the limiting tooth, and the end of the connecting head is provided with a hexagonal recess.

[0011] Preferably, the end of the connecting head away from the sliding rod is fixedly provided with a sealing ring.

[0012] The utility model at least has the following beneficial effects:

[0013] The connecting shaft is inserted into the output shaft, the spline groove is provided on the connecting shaft, the spline groove of the connecting shaft is aligned with the limiting plate in the output shaft during insertion, the clamping plate and the limiting plate are moved by the two groups of driving mechanisms after the connecting shaft is completely inserted, the clamping plate is in contact with the connecting shaft and the limiting plate is clamped in the spline groove of the connecting shaft, and the installation of the connecting shaft is realized, when the output shaft drives the connecting shaft to rotate, the connecting shaft is directly driven to rotate due to the cooperation between the limiting plate and the spline groove, and the distance between the limiting plate and the clamping plate is adjustable, so that different sizes of the connecting shaft can be conveniently installed. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is an output shaft sectional view of the utility model;

[0017] Figure 3For the utility model Figure 2 Disassembly view

[0018] Figure 4 For the utility model Figure 3 Structure schematic view at A place in middle

[0019] Figure 5 For the utility model spring structure schematic view.

[0020] In the figure: 1, speed reducer body; 2, output shaft; 3, connecting shaft; 4, triangular chuck; 5, extension shell; 6, spline groove; 7, fixed plate; 8, limit tooth slot; 9, limiting plate; 10, clamping plate; 11, screw; 12, worm wheel; 13, worm; 14, transmission shaft; 15, connecting block; 16, spring; 17, slide rod; 18, connecting head; 19, limit tooth; 20, sealing ring. Specific implementation

[0021] In order to make the purpose, technical scheme and advantage of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the utility model.

[0023] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second" and the like are only used to distinguish description, and cannot be understood as indicating or implying relative importance.

[0024] The electrical components appearing in the text are all connected with the main controller and 220V mains of the outside world, and the main controller can be a conventional known device such as a computer for control.

[0025] In the description of the embodiments of the utility model, it needs to be explained that the directions or position relations indicated by the terms "inner", "outer", "upper" and the like are based on the directions or position relations shown in the drawings, or the directions or position relations in which the utility model product is usually placed during use, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as a limitation on the utility model.

[0026] Referring to Figures 1-5 A kind of reduction gear with adaptive connection, including reduction gear body 1 and connecting shaft 3, the surface of reduction gear body 1 is provided with output shaft 2, the surface of connecting shaft 3 is opened with spline groove 6, reduction gear body 1 is set as cylindrical structure and both sides are fixedly installed with extension shell 5, the inside of two extension shells 5 is slidably connected with limiting plate 9 and clamping plate 10, the inside of two extension shells 5 is respectively provided with driving mechanism for driving limiting plate 9 and clamping plate 10 to move, directly in use with connecting shaft 3 aligning output shaft 2 is inserted, since spline groove 6 is opened on connecting shaft 3, it is guaranteed that the spline groove 6 of connecting shaft 3 is aligned with limiting plate 9 inside output shaft 2 when inserting, after connecting shaft 3 is completely inserted, using two groups of driving mechanisms makes clamping plate 10 and limiting plate 9 all move, makes clamping plate 10 contact with connecting shaft 3 and makes limiting plate 9 be clamped in the spline groove 6 of connecting shaft 3, to realize the installation of connecting shaft 3 in turn, when output shaft 2 drives connecting shaft 3 to rotate, since the cooperation between limiting plate 9 and spline groove 6 can directly drive connecting shaft 3 to rotate, because the distance between limiting plate 9 and clamping plate 10 is adjustable, to facilitate the installation of different sizes of connecting shaft 3.

[0027] Further, the end of output shaft 2 is fixedly installed with triangular chuck 4, in order to guarantee that connecting shaft 3 and output shaft 2 keep on the same center axis during installation process, after inserting connecting shaft 3, triangular chuck 4 can be manually operated to preliminarily fix three clamping jaws on triangular chuck 4 to connecting shaft 3, while it can be guaranteed that triangular chuck 4, connecting shaft 3 and output shaft 2 keep on the same center axis.

[0028] Further, the bottom of limiting plate 9 is provided with inclined surface on both sides, and the end of clamping plate 10 is provided with "V" shaped structure, the bottom of limiting plate 9 is provided with inclined surface on both sides, which can facilitate the adaptation of spline groove 6 on different connecting shafts 3, no matter how wide the spline groove 6 is, the inclined surface on both sides of limiting plate 9 can abut against the spline groove 6, and the end of clamping plate 10 is provided with "V" shape to facilitate the adaptation of connecting shafts 3 with different diameters.

[0029] Further, the driving mechanism comprises a transmission shaft 14, a fixed plate 7 is fixedly installed on the inner wall of the extension shell 5, the transmission shaft 14 and the fixed plate 7 are rotationally connected, the surface of the transmission shaft 14 is fixedly installed with a worm 13, the inner wall of the extension shell 5 is rotationally connected with a screw rod 11, the surface of the screw rod 11 is fixedly installed with a worm wheel 12, the worm 13 and the worm wheel 12 are meshed, the limiting plate 9 and the clamping plate 10 are respectively threadedly connected with the screw rod 11 in the two driving mechanisms, in use, the transmission shaft 14 is manually rotated, the transmission shaft 14 drives the worm 13 to rotate, the worm 13 drives the worm wheel 12 to rotate, the worm wheel 12 drives the screw rod 11 to rotate, the screw rod 11 drives the limiting plate 9 or the clamping plate 10 to move, convenient operation and use, and the cooperation between the worm wheel 12 and the worm 13 can achieve self-locking function, and the screw rod 11 will not self-rotate after locking the connecting shaft 3.

[0030] Further, the end of the transmission shaft 14 is fixedly installed with a connecting block 15, the end of the connecting block 15 is provided with a sliding groove, the sliding groove is slidably connected with a sliding rod 17, the end of the sliding rod 17 is fixedly installed with a spring 16, the end of the spring 16 away from the sliding rod 17 is fixedly connected with the sliding groove, the end of the sliding rod 17 away from the spring 16 is fixedly installed with a connecting head 18, the surface of the connecting head 18 is fixedly installed with a limiting tooth 19, the surface of the extension shell 5 is provided with a through hole relative to the position of the connecting head 18, and the through hole is provided with a limiting tooth groove 8 matching the size of the limiting tooth 19, the end of the connecting head 18 is provided with a hexagonal groove, in order to further improve the stability, when the transmission shaft 14 is rotated, first, a tool is inserted into the hexagonal groove, and the connecting head 18 is pressed towards the inside by the tool, at this time, the sliding rod 17 on the connecting head 18 will extend into the inside of the sliding groove, the limiting tooth 19 on the connecting head 18 will be separated from the limiting tooth groove 8, then the tool can be used to rotate the connecting head 18, thereby realizing power transmission, when the transmission shaft 14 does not need to be rotated, the tool is directly loosened, under the action of the spring 16, the sliding rod 17 can move outward, the sliding rod 17 drives the connecting head 18 to move synchronously, the limiting tooth 19 on the connecting head 18 is clamped into the limiting tooth groove 8 again, so that the connecting head 18 cannot be rotated, and the connecting head 18 and the sliding rod 17 are fixedly connected, the sliding rod 17 and the sliding groove at the end of the transmission shaft 14 are slidably connected, so that the transmission shaft 14 also cannot be rotated, thereby realizing self-locking function of the transmission shaft 14.

[0031] Further, the end of the connecting head 18 away from the sliding rod 17 is fixedly installed with a sealing ring 20, the sealing ring 20 can make the end of the connecting head 18 contact with the inner wall of the extension shell 5 after being subjected to the elastic force of the spring 16, the sealing ring 20 arranged between the end of the connecting head 18 and the inner wall of the extension shell 5 can play a sealing function, reducing the situation that external impurities enter the inside of the extension shell 5.

[0032] In summary, the connecting shaft 3 is directly aligned with the output shaft 2 and inserted, since the connecting shaft 3 is provided with the spline groove 6, the spline groove 6 of the connecting shaft 3 is aligned with the limiting plate 9 inside the output shaft 2 during insertion, after the connecting shaft 3 is completely inserted, the clamping plate 10 and the limiting plate 9 are moved by the two sets of driving mechanisms, the clamping plate 10 is in contact with the connecting shaft 3 and the limiting plate 9 is clamped inside the spline groove 6 of the connecting shaft 3, thereby achieving the installation of the connecting shaft 3, when the output shaft 2 drives the connecting shaft 3 to rotate, the limiting plate 9 and the spline groove 6 can directly drive the connecting shaft 3 to rotate, and the distance between the limiting plate 9 and the clamping plate 10 is adjustable, thereby facilitating the installation of connecting shafts 3 of different sizes, in order to ensure that the connecting shaft 3 and the output shaft 2 remain on the same central axis during installation, after the connecting shaft 3 is inserted, the three clamping jaws on the triangular chuck 4 can be manually operated to preliminarily fix the connecting shaft 3, and at the same time, the triangular chuck 4, the connecting shaft 3 and the output shaft 2 can be kept on the same central axis, the bottom of the limiting plate 9 is provided with a slope, which can conveniently adapt to the spline groove 6 on the connecting shaft 3, no matter how wide the spline groove 6 is, the slope on both sides of the limiting plate 9 can tightly abut against the spline groove 6, the end of the clamping plate 10 is provided with a "V" shape to conveniently adapt to connecting shafts 3 of different diameters, in use, the driving mechanism is manually rotated, the transmission shaft 14 drives the worm 13 to rotate, the worm 13 drives the worm wheel 12 to rotate, the worm wheel 12 drives the screw 11 to rotate, and the screw 11 drives the limiting plate 9 or the clamping plate 10 to move, which is convenient to operate and use, and the cooperation between the worm wheel 12 and the worm 13 can achieve self-locking function, after locking the connecting shaft 3, the screw 11 will not rotate, in order to further improve the stability, when the transmission shaft 14 is rotated, first use the tool to extend into the hexagonal groove, and press the connecting head 18 towards the inside by using the tool, at this time the slide rod 17 on the connecting head 18 will extend into the slide groove, the limiting teeth 19 on the connecting head 18 will be separated from the limiting tooth groove 8, then the tool can be used to rotate the connecting head 18, thereby achieving power transmission, when the transmission shaft 14 does not need to be rotated, the tool is directly loosened, under the action of the spring 16, the slide rod 17 moves outward, the slide rod 17 drives the connecting head 18 to move synchronously, so that the limiting teeth 19 on the connecting head 18 are clamped into the limiting tooth groove 8 again, so that the connecting head 18 cannot be rotated, and the connecting head 18 and the slide rod 17 are fixedly connected, the slide rod 17 and the slide groove at the end of the transmission shaft 14 are slidingly connected, so that the transmission shaft 14 also cannot be rotated, thereby achieving self-locking function of the transmission shaft 14, through the setting of the sealing ring 20, the connecting head 18 can be in contact with the inner wall of the extension shell 5 after being subjected to the elastic force of the spring 16, the sealing ring 20 is arranged between the end of the connecting head 18 and the inner wall of the extension shell 5, which can achieve sealing function and reduce the entry of external impurities into the extension shell 5.

[0033] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A speed reducer with adaptive connection, comprising a speed reducer body (1) and a connecting shaft (3), wherein an output shaft (2) is provided on the surface of the speed reducer body (1), and a spline groove (6) is formed on the surface of the connecting shaft (3), characterized in that, The reducer body (1) is configured as a cylindrical structure and an extension shell (5) is fixedly installed on both the upper and lower sides. The two extension shells (5) are slidably connected with a limiting plate (9) and a clamping plate (10). The two extension shells (5) are respectively provided with a driving mechanism for driving the limiting plate (9) and the clamping plate (10) to move.

2. A speed reducer with adaptive connection according to claim 1, characterized in that, A triangular chuck (4) is fixedly installed at the end of the output shaft (2).

3. A speed reducer with adaptive connection according to claim 1, characterized in that, The bottom sides of the limiting plate (9) are both set as inclined surfaces, and the end of the clamping plate (10) is set as a "V" shaped structure.

4. A speed reducer with adaptive connection according to claim 1, characterized in that, The drive mechanism includes a drive shaft (14), a fixing plate (7) is fixedly installed on the inner wall of the extension shell (5), the drive shaft (14) and the fixing plate (7) are rotatably connected, a worm (13) is fixedly installed on the surface of the drive shaft (14), a screw (11) is rotatably connected to the inner wall of the extension shell (5), a worm wheel (12) is fixedly installed on the surface of the screw (11), the worm (13) and the worm wheel (12) mesh, and the limiting plate (9) and the clamping plate (10) are threadedly connected to the screws (11) in the two drive mechanisms respectively.

5. A speed reducer with adaptive connection according to claim 4, characterized in that, A connecting block (15) is fixedly installed at the end of the drive shaft (14). A sliding groove is provided at the end of the connecting block (15). A sliding rod (17) is slidably connected inside the sliding groove. A spring (16) is fixedly installed at the end of the sliding rod (17). The end of the spring (16) away from the sliding rod (17) is fixedly connected to the sliding groove. A connector (18) is fixedly installed at the end of the sliding rod (17) away from the spring (16). A limiting tooth (19) is fixedly installed on the surface of the connector (18). A through hole is provided on the surface of the extension shell (5) relative to the position of the connector (18). A limiting tooth groove (8) with a size adapted to the limiting tooth (19) is provided at the position of the through hole. A hexagonal groove is provided at the end of the connector (18).

6. A speed reducer with adaptive connection according to claim 5, characterized in that, A sealing ring (20) is fixedly installed at the end of the connector (18) away from the slide bar (17).

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