Novel flange type connecting structure of speed reducer

Abstract

According to the novel flange type connecting structure of the speed reducer, a plurality of protruding blocks are connected to the inner ring face of a transmission gear in a circumferential arrangement mode, a limiting open groove is formed between every two adjacent protruding blocks, and at least one first connecting hole is formed in the position, corresponding to each protruding block, of the end face of the transmission gear; a flange ring is fixedly connected to the side face of the end of the connecting shaft, a plurality of limiting blocks are fixedly arranged on the connecting end face of the flange ring and the side face of the connecting shaft, and a plurality of second connecting holes are formed in the end face of the flange ring. When the end of the connecting shaft is arranged at the inner ring of the transmission gear, the limiting block of the connecting shaft is arranged in the limiting open groove corresponding to the transmission gear, and the second connecting hole of the flange ring and the first connecting hole corresponding to the transmission gear are oppositely arranged and detachably connected through a bolt fastener. The connecting structure is high in transmission stability, can bear larger torque load and power output, can reduce the use of bolt fasteners, can protect the bolt fasteners from being damaged by rotational shear force, and is high in reliability.

Description

Technical Field

[0001] The present application belongs to the field of reducer components, and specifically relates to a novel flange connection structure of a reducer. Background Art

[0002] A reducer is a speed reduction transmission device used between the prime mover and the working machine, and is widely used in modern machinery. Common reducers usually use a small gear to drive a large gear to achieve a deceleration effect, and play the role of transmitting torque between the prime mover and the working machine or actuator.

[0003] The large gear that outputs torque in existing reducers is usually connected to the connecting shaft with a simple flange connection. The rotational load is concentrated on the connecting bolts. If the output power of the reducer is large, the connecting bolts are easily deformed due to the force, resulting in unstable transmission. Utility Model Content

[0004] Based on the content in the background technology, the present application provides a new flange connection structure of a reducer, which has the characteristics of stable transmission and strong load-bearing capacity.

[0005] Disclosed is a novel flange connection structure for a reducer. Multiple protrusions are circumferentially arranged and integrally connected on the inner annular surface of the reducer transmission gear. Position-limiting openings are formed between adjacent protrusions. At least one first connection hole is formed on the end surface of the transmission gear at a position corresponding to each protrusion. The transmission gear and the protrusions are integrally cast. The connection holes of the transmission gear are formed in the protrusions, allowing the transmission gear to have a thinner wall thickness at the position of the position-limiting openings. This reduces the weight of the transmission gear and improves transmission efficiency.

[0006] A flange ring is fixedly connected to the side surface of the end of the reducer connecting shaft, and a plurality of limit blocks are fixedly provided on the connecting end surface of the flange ring and the side surface of the connecting shaft. The limit blocks correspond one-to-one with the limit opening grooves of the transmission gear. The end surface of the flange ring is provided with a plurality of second connecting holes, and the second connecting holes correspond one-to-one with the first connecting holes of the transmission gear.

[0007] When the end of the connecting shaft is positioned against the inner ring of the transmission gear, the shaft's stopper is positioned within the corresponding stopper slot of the transmission gear. The second connection hole of the flange ring is positioned opposite the first connection hole of the transmission gear and is removably connected via bolt fasteners. This connection structure creates a spline-like fit between the connecting shaft and the transmission gear, ensuring a stable transmission and capable of withstanding greater torque loads and power output. Furthermore, compared to traditional flange connections, the flange ring does not need to be fully covered with connection holes, reducing the need for bolt fasteners and protecting them from damage caused by rotational shear forces.

[0008] Preferably, the first connecting hole is a threaded hole, and the second connecting hole is a through hole. A bolt fastener passes through the second connecting hole of the flange ring and is screwed into the first connecting hole corresponding to the transmission gear, thereby realizing a fastened and detachable connection between the transmission gear and the connecting shaft.

[0009] Preferably, the limit block is integrally connected to the connecting shaft and welded to the flange ring. The limit block arranged in this way can ensure reliable connection structural strength between the connecting shaft, the limit block and the flange ring.

[0010] Preferably, there are six protrusions evenly distributed in a circle on the inner ring surface of the transmission gear, and two first connecting holes are respectively provided on the end face of the transmission gear at the corresponding position of each protrusion; such an evenly distributed number of protrusions and first connecting holes can make the transmission effect of the transmission gear more stable.

[0011] Through the above technical solution, the utility model has at least the following beneficial effects:

[0012] The new flange connection structure of a reducer described in the present application can form a spline-like fit between its transmission gear and the connecting shaft, has high transmission stability and can withstand greater torque loads and power output. At the same time, compared with traditional flange connection methods, there is no need to cover the entire flange ring with connection holes, which can reduce the use of bolt fasteners and protect the bolt fasteners from damage by rotational shear force, and has high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an overall schematic diagram of a novel flange connection structure of a reducer described in an embodiment of the present application;

[0014] Figure 2 A partial cross-sectional view of a novel flange connection structure of a reducer described in an embodiment of the present application;

[0015] Figure 3 This is a schematic structural diagram of the transmission gear described in an embodiment of the present application;

[0016] Figure 4 It is a front view of the transmission gear described in the embodiment of this application;

[0017] Figure 5 This is a schematic structural diagram of the connecting shaft described in an embodiment of the present application. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0019] In the description of this application, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are 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 operate in a specific direction. Therefore, the terms describing the positional relationship are only used for illustrative purposes and cannot be understood as limiting this patent; if there are terms such as "first", "second", etc., they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the said features. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0020] In the description of the utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean 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, or it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0021] refer to Figures 1 to 5 A novel flange connection structure of a reducer is disclosed. A plurality of protrusions 101 are circumferentially arranged and integrally connected on the inner ring surface of the reducer transmission gear 1. Position-limiting opening grooves 102 are formed between adjacent protrusions 101. At least one first connection hole 103 is respectively opened on the end surface of the transmission gear 1 at a position corresponding to each protrusion 101. The transmission gear 1 and the protrusions 101 are specifically integrally cast, and the connection holes of the transmission gear 1 are opened at the protrusions 101, so that the wall thickness of the transmission gear 1 at the position of the position-limiting opening grooves 102 can be thinner, thereby making the transmission gear 1 lighter and improving the transmission efficiency.

[0022] A flange ring 201 is fixedly connected to the side surface of the end of the reducer connecting shaft 2, and a plurality of limit blocks 202 are fixedly provided on the connecting end surface of the flange ring 201 and the side surface of the connecting shaft 2. The limit blocks 202 are specifically connected to the connecting shaft 2 as a whole and welded to the flange ring 201. The limit blocks 202 provided in this way can ensure reliable connection structural strength between the connecting shaft 2, the limit blocks 202 and the flange ring 201; the limit blocks 202 of the connecting shaft 2 correspond one-to-one with the limit opening grooves 102 of the transmission gear 1, and the end surface of the flange ring 201 is provided with a plurality of second connection holes 203, which correspond one-to-one with the first connection holes 103 of the transmission gear 1;

[0023] When the end of the connecting shaft 2 is positioned on the inner ring of the transmission gear 1, the stopper 202 of the connecting shaft 2 is positioned within the corresponding stopper opening 102 of the transmission gear 1. The second connection hole 203 of the flange ring 201 is positioned opposite the corresponding first connection hole 103 of the transmission gear 1 and is removably connected via bolts 3. This connection structure creates a spline-like fit between the connecting shaft 2 and the transmission gear 1, ensuring a stable transmission and capable of withstanding greater torque loads and power output. Furthermore, compared to traditional flange connections, there is no need to cover the entire flange ring 201 with connection holes, which reduces the use of bolts 3 and protects them from damage caused by rotational shear forces.

[0024] In this specific embodiment, the first connection hole 103 is a threaded hole, and the second connection hole 203 is a through hole. A bolt 3 fastener passes through the second connection hole 203 of the flange ring 201 and is screwed into the first connection hole 103 corresponding to the transmission gear 1, thereby achieving a fastened and detachable connection between the transmission gear 1 and the connecting shaft 2. Figure 3 or Figure 4 There are six protrusions 101 evenly distributed in a circle on the inner ring surface of the transmission gear 1, and two first connecting holes 103 are respectively opened on the end surface of the transmission gear 1 at the corresponding position of each protrusion 101; such a uniform number of protrusions 101 and first connecting holes 103 can make the transmission effect of the transmission gear 1 more stable.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Based on the present invention and the above description, relevant personnel can make various changes and modifications without departing from the technical idea of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A novel flange connection structure for a reducer, characterized in that: A plurality of protrusions (101) are circumferentially arranged and integrally connected on the inner ring surface of the speed reducer transmission gear (1), and a limiting opening groove (102) is formed between adjacent protrusions (101). The end surface of the transmission gear (1) is provided with at least one first connection hole (103) at a position corresponding to each protrusion (101); A flange ring (201) is fixedly connected to the side surface of the end of the reducer connecting shaft (2); a plurality of limit blocks (202) are fixedly arranged on the connecting end surface of the flange ring (201) and the side surface of the connecting shaft (2); the limit blocks (202) correspond one-to-one to the limit opening grooves (102) of the transmission gear (1); a plurality of second connecting holes (203) are opened on the end surface of the flange ring (201); the second connecting holes (203) correspond one-to-one to the first connecting holes (103) of the transmission gear (1); When the end of the connecting shaft (2) is placed at the inner ring of the transmission gear (1), the limiting block (202) of the connecting shaft (2) is placed in the limiting opening groove (102) corresponding to the transmission gear (1), and the second connecting hole (203) of the flange ring (201) is arranged opposite to the first connecting hole (103) corresponding to the transmission gear (1), and is detachably connected by a bolt (3) fastener.

2. The novel flange connection structure of a reducer according to claim 1, characterized in that: The first connecting hole (103) is a threaded hole, and the second connecting hole (203) is a through hole. A bolt (3) fastener passes through the second connecting hole (203) of the flange ring (201) and is screwed into the first connecting hole (103) corresponding to the transmission gear (1).

3. The novel flange connection structure of a reducer according to claim 1 or 2, characterized in that: The limiting block (202) and the connecting shaft (2) are integrally connected and welded to the flange ring (201).

4. The novel flange connection structure of a reducer according to claim 1 or 2, characterized in that: Six protrusions (101) are arranged evenly in a circumferential pattern on the inner ring surface of the transmission gear (1), and two first connection holes (103) are respectively provided on the end surface of the transmission gear (1) at positions corresponding to each protrusion (101).

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