A twin screw gearbox transmission assembly

Abstract

The utility model relates to gear box drive equipment field, concretely relates to a kind of double screw gear box drive assembly, including the output shaft of double screw gear box, further include: transmission mechanism, it is set in the output shaft outside gear box, the transmission mechanism outside is provided with auxiliary assembly, the transmission mechanism includes clamping groove, the clamping groove is opened in output shaft key groove inner wall.Adjustable design through transmission mechanism, transmission bolt and the thread cooperation of moving plate, can drive limiting block along the flexible movement of clamping groove in output shaft key groove, indirectly realize the relative position adjustment of output shaft and transmission cylinder, to adapt to the working condition of different length requirement, limiting transmission bolt is carried out simultaneously by auxiliary assembly, prevent loosening, when the installation distance of external screw and gear box output shaft exists difference, without replacing output shaft body, only by adjusting the plug-in position of limiting block can be adapted, substantially improve the compatibility of component to different equipment or working condition.

Description

Technical Field

[0001] This utility model relates to the field of gearbox transmission equipment, specifically to a twin-screw gearbox transmission assembly. Background Technology

[0002] As a core transmission component of equipment such as twin-screw extruders and mixers, the twin-screw gearbox plays a crucial role in accurately transmitting motor power to the two screws and enabling them to rotate in opposite or the same direction. It is widely used in industrial fields such as plastics processing, chemical reactions, and food manufacturing.

[0003] Traditional gearboxes typically have rigid, fixed output shafts and transmission components with non-adjustable lengths. When the installation distance between the external screw and the gearbox varies depending on the equipment model and operating conditions, it is necessary to replace the output shaft or transmission components with the appropriate length. This not only increases spare parts inventory costs but also requires downtime for replacement, severely impacting production continuity.

[0004] Therefore, it is necessary to invent a twin-screw gearbox transmission assembly to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a twin-screw gearbox transmission assembly. Through the transmission mechanism, the transmission bolts engage with the threaded connection of the moving plate, driving the limiting block to move flexibly along the slot in the keyway of the output shaft. This allows for adjustment of the relative position of the output shaft and the transmission cylinder, thereby adjusting the effective length of the output shaft. It can adapt to different installation distances without replacing any parts. This solves the problem in the prior art where the output shaft and transmission components of traditional gearboxes are mostly rigid fixed structures with non-adjustable lengths, requiring the replacement of output shafts or transmission accessories of corresponding lengths.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a twin-screw gearbox transmission assembly, including the output shaft of a twin-screw gearbox, and further comprising:

[0007] A transmission mechanism is located outside the output shaft of the gearbox. An auxiliary component is provided outside the transmission mechanism. The transmission mechanism includes a slot, which is formed on the inner wall of the keyway of the output shaft. A transmission cylinder is sleeved on the outer side of the output shaft. A movable plate is slidably connected to the inner wall of the transmission cylinder. A limit block is fixedly connected to the side of the movable plate near the output shaft. A transmission bolt is rotatably connected to the inner wall of the transmission cylinder. The transmission bolt is threaded through and connected to the inner wall of the movable plate. The slot and the limit block are inserted into each other.

[0008] A connecting shaft is fixedly connected to the front side of the transmission cylinder, and a sliding groove is provided on the outer side of the connecting shaft.

[0009] Preferably, the transmission mechanism further includes a spring plate, which is disposed on the inner wall of the transmission cylinder, and the outer side of the spring plate contacts the moving plate and the surface of the transmission cylinder.

[0010] Preferably, the spring is bent.

[0011] Preferably, the auxiliary component includes a fixed cylinder, which is fixedly connected to the outside of the transmission cylinder. A limit ring is fixedly connected to the inside of the fixed cylinder, and a positioning groove is provided on the head of the transmission bolt. The positioning groove engages with the limit ring.

[0012] Preferably, the limiting ring is configured as a ring shape and its outer side is configured as an arc-shaped surface.

[0013] Preferably, the limiting block is configured in a T-shape.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] This utility model, through the adjustable design of the transmission mechanism, allows the transmission bolt and the moving plate to engage threadedly, driving the limiting block to move flexibly along the slot in the keyway of the output shaft. This indirectly achieves the adjustment of the relative position between the output shaft and the transmission cylinder, thus adapting to working conditions with different length requirements. At the same time, the auxiliary component limits the transmission bolt to prevent loosening. When there is a difference in the installation distance between the external screw and the gearbox output shaft, there is no need to replace the output shaft body; simply adjusting the insertion position of the limiting block is sufficient for adaptation, greatly improving the compatibility of the component with different equipment or working conditions. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a three-dimensional structural installation diagram of the overall device in this utility model;

[0018] Figure 2 This is a three-dimensional structural disassembly diagram of the transmission mechanism in this utility model;

[0019] Figure 3 This is a three-dimensional cross-sectional view of the transmission cylinder in this utility model;

[0020] Figure 4 This is a three-dimensional structural disassembly diagram of the auxiliary components in this utility model.

[0021] Legend:

[0022] 1. Output shaft; 2. Transmission mechanism; 21. Slot; 22. Transmission cylinder; 23. Moving plate; 24. Limiting block; 25. Spring; 26. Transmission bolt; 3. Connecting shaft; 4. Slide groove; 5. Auxiliary components; 51. Fixed cylinder; 52. Limiting ring; 53. Positioning groove. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model provides, for example Figure 1 - Figure 3 The illustrated twin-screw gearbox transmission assembly includes an output shaft 1 of the twin-screw gearbox, which is provided in two sets. As the core carrier for the power output of the twin-screw gearbox, it undertakes the function of transmitting torque to external components such as screws. The slot 21 opened in the inner wall of the keyway provides a positioning basis for the connection with the transmission mechanism. Through the insertion and cooperation with the limiting block 24, the power is efficiently transmitted to the transmission cylinder 22. It also includes a transmission mechanism 2 and a connecting shaft 3, specifically;

[0025] The transmission mechanism 2 is located outside the output shaft 1 of the gearbox. An auxiliary component 5 is provided on the outside of the transmission mechanism 2. The transmission mechanism 2 includes a slot 21, which is opened on the inner wall of the keyway of the output shaft 1. The slots 21 are evenly distributed in multiple groups and are inserted into the T-shaped limit block 24. Through precise engagement, the relative rotation between the output shaft 1 and the transmission cylinder 22 is restricted, ensuring that the torque transmission is slip-free. At the same time, it provides multiple positioning positions for adjusting the length of the output shaft 1. The transmission cylinder 22, which is made of metal, is sleeved on the outside of the output shaft 1. It serves as the main frame of the transmission mechanism 2 and provides installation space for components such as the moving plate 23 and the spring 25. At the same time, it transmits the torque of the output shaft 1 to the connecting shaft 3 at the front end, realizing the transfer of power. The moving plate 23 is slidably connected to the inner wall of the transmission cylinder 22 and can move axially along the transmission bolt 26. The limit block 24 fixed on one side achieves a rigid connection between the output shaft 1 and the transmission cylinder 22 through the cooperation with the slot 21. The other side is threadedly engaged with the transmission bolt 26. The bolt rotation drives the movement of the limit block 24, thereby adjusting the insertion position of the limit block 24.

[0026] like Figure 1 - Figure 3As shown, a limiting block 24 is fixedly connected to the side of the movable plate 23 near the output shaft 1. The limiting block 24 is T-shaped and precisely inserts into the slot 21. The T-shaped structure can simultaneously limit radial and circumferential displacement, which not only avoids disengagement due to excessive torque during transmission, but also ensures the coaxiality of the output shaft 1 and the transmission cylinder 22, thereby improving transmission accuracy. The inner wall of the transmission cylinder 22 is rotatably connected to a transmission bolt 26. By rotating, the movable plate 23 is driven to slide, realizing the insertion and engagement of the limiting block 24 with different slots 21, thereby adjusting the relative position of the output shaft 1 and the transmission cylinder 22, i.e., the effective length of the output shaft 1, to adapt to different working conditions. The transmission bolt 26 is threaded through and connected to the inner wall of the movable plate 23, and the slot 21 and the limiting block 24 are inserted and engaged.

[0027] Furthermore, the connecting shaft 3 is fixedly connected to the front side of the transmission cylinder 22. A sliding groove 4 is provided on the outer side of the connecting shaft 3. The connecting shaft 3 serves as the connection end between the transmission assembly 2 and external equipment such as a twin screw. The sliding groove 4 on its outer side can provide guidance for the installation of external components, ensure coaxiality during connection, and facilitate quick positioning and assembly.

[0028] like Figure 2 and Figure 3 As shown, the transmission mechanism 2 also includes a spring sheet 25, which is disposed on the inner wall of the transmission cylinder 22. The outer side of the spring sheet 25 contacts the surfaces of the moving plate 23 and the transmission cylinder 22. It absorbs the vibration and impact load during the operation of the equipment through its own elastic deformation, buffers the damage to the components caused by instantaneous overload, and the elastic force can compensate for the gap caused by assembly error or thermal expansion and contraction, ensuring the tight fit between the moving plate 23 and the transmission cylinder 22. The spring sheet 25 is bent.

[0029] like Figure 2 - Figure 4 As shown, the auxiliary component 5 includes a fixed cylinder 51, which is fixedly connected to the outside of the transmission cylinder 22. It provides an installation carrier for the limiting ring 52 and protects the head of the transmission bolt 26 to prevent external dust and impurities from entering and affecting the bolt rotation. The limiting ring 52 is fixedly connected to the inner side of the fixed cylinder 51. The limiting ring 52 is designed as a ring shape with an arc-shaped outer surface, which engages with the positioning groove 53 on the head of the transmission bolt 26. The arc-shaped surface design facilitates smooth engagement when the bolt rotates, and the ring structure can limit the circumferential rotation of the bolt, effectively preventing the bolt from loosening due to equipment vibration and ensuring the stable insertion of the limiting block 24 and the slot 21. The head of the transmission bolt 26 has a positioning groove 53, which engages with the limiting ring 52.

[0030] The working principle of this utility model is as follows: The output shaft 1 transmits power to the transmission mechanism 2, which drives the external screw through the transmission cylinder 22 and the connecting shaft 3. The core adjustment structure is the threaded engagement between the transmission bolt 26 and the moving plate 23. When adjustment is required, the transmission bolt 26 is rotated, and the moving plate 23 slides along the inner wall of the transmission cylinder 22, causing the T-shaped limit block 24 to precisely engage with the slot 21 in the keyway of the output shaft 1. The torque transmission between the output shaft 1 and the transmission cylinder 22 is achieved through rigid engagement. At the same time, the relative length between the output shaft 1 and the transmission cylinder 22 can be flexibly adjusted by selecting different positions of the slot 21 to adapt to different installation distance requirements.

[0031] During transmission, the bent spring sheet 25 on the inner wall of the transmission cylinder 22 closely fits the moving plate 23 and the surface of the transmission cylinder 22. It absorbs vibration and impact loads through elastic deformation, buffers damage to components caused by instantaneous overload, and compensates for gaps caused by assembly errors or thermal expansion and contraction, ensuring tight connection. The auxiliary component 5 plays a fixing role at the same time. The annular limiting ring 52 on the inner side of the fixed cylinder 51 engages with the positioning groove 53 on the head of the transmission bolt 26, restricting the circumferential rotation of the bolt and preventing it from loosening due to vibration, thus ensuring the stable cooperation between the limiting block 24 and the groove 21.

[0032] Finally, the transmission cylinder 22 transmits the torque to the connecting shaft 3 at the front end. The sliding groove 4 on the outside of the connecting shaft 3 provides guidance for the assembly with the external screw, ensuring coaxiality and achieving efficient power output. The component can stably adapt to diverse working conditions and ensure the precise operation of the twin-screw equipment.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A twin-screw gearbox transmission assembly, comprising the output shaft (1) of a twin-screw gearbox: characterized in that, Also includes: A transmission mechanism (2) is set outside the output shaft (1) of the gearbox. An auxiliary component (5) is set outside the transmission mechanism (2). The transmission mechanism (2) includes a slot (21). The slot (21) is opened on the inner wall of the keyway of the output shaft (1). A transmission cylinder (22) is sleeved on the outer side of the output shaft (1). A moving plate (23) is slidably connected to the inner wall of the transmission cylinder (22). A limit block (24) is fixedly connected to the side of the moving plate (23) near the output shaft (1). A transmission bolt (26) is rotatably connected to the inner wall of the transmission cylinder (22). The transmission bolt (26) is threaded through and connected to the inner wall of the moving plate (23). The slot (21) and the limit block (24) are inserted into each other. A connecting shaft (3) is fixedly connected to the front side of the transmission cylinder (22), and a sliding groove (4) is provided on the outer side of the connecting shaft (3).

2. The twin-screw gearbox transmission assembly according to claim 1, characterized in that: The transmission mechanism (2) also includes a spring (25), which is disposed on the inner wall of the transmission cylinder (22), and the outer side of the spring (25) contacts the surface of the moving plate (23) and the transmission cylinder (22).

3. The twin-screw gearbox transmission assembly according to claim 2, characterized in that: The spring piece (25) is bent.

4. The twin-screw gearbox transmission assembly according to claim 1, characterized in that: The auxiliary component (5) includes a fixed cylinder (51), which is fixedly connected to the outside of the transmission cylinder (22). A limit ring (52) is fixedly connected to the inside of the fixed cylinder (51). A positioning groove (53) is provided on the head of the transmission bolt (26), and the positioning groove (53) engages with the limit ring (52).

5. A twin-screw gearbox transmission assembly according to claim 4, characterized in that: The limiting ring (52) is configured as a ring shape and the outer side is configured as an arc surface.

6. A twin-screw gearbox transmission assembly according to claim 1, characterized in that: The limiting block (24) is configured in a T shape.

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