Shaft connecting device for stirring device
By designing a shaft connection device including a transmission shaft, a shaft sleeve, a locking screw and an anti-loosening block, the problem of loose connection between the agitator and the shaft is solved, and higher stability and safety are achieved.
Patent Information
- Application Number
- CN202422136625.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The connection between the existing stirring device and the shaft is prone to loosening and falling off, resulting in equipment shutdown, production interruption and safety hazards.
A shaft connection device including a transmission shaft, a shaft sleeve, a locking screw and an anti-loosening card block is designed. Through the cooperation of the locking screw and an anti-loosening card block, the shaft sleeve is firmly fixed and prevented from loosening.
It effectively improves the connection stability of the stirring device and the shaft, avoids equipment shutdown and safety accidents, and ensures continuous production operation.
Smart Images
Figure CN222924815U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of production practice, in particular to a shaft connecting device for a stirring device. Background Art
[0002] In the production process of chemical enterprises, various large kettles, tanks and reactors use stirring devices with a relatively high proportion. The main function of the stirring device is to ensure the uniform mixing or full reaction of the medium in the equipment. At present, the mainstream connection form between the stirring device and the shaft in China is the clamping type of two semi-circular shaft sleeves. Bolts are used to fasten the shaft sleeves, and stirring blades are welded or bolted on the outer side of the shaft sleeves. This connection form only relies on the friction force between the shaft sleeve and the shaft as the fastening force application point. During the operation of the stirring device, loosening and falling off are very likely to occur, resulting in the shutdown and maintenance of the equipment, hindering the continuous operation of the production system, and easily causing equipment damage and even safety accidents. Content of the Utility Model
[0003] Aiming at the deficiencies of the prior art, the utility model provides a shaft connecting device for a stirring device, which solves the problem of loose connection between the stirring device and the shaft, and prevents equipment shutdown or other malignant equipment accidents caused by the loosening of the stirring device.
[0004] To achieve the above object, the utility model is realized through the following technical solutions: A shaft connecting device for a stirring device includes a transmission shaft. One side of the transmission shaft is provided with a shaft sleeve. A first keyway is opened at the top of one side of the transmission shaft, and a second keyway is opened at the bottom of the other side of the transmission shaft. A first key bar is arranged inside the first keyway, and a second key bar is arranged inside the second keyway. The top and bottom of the inner surface of the shaft sleeve are respectively provided with a first mating groove and a second mating groove. A locking screw hole is opened inside the first keyway, and a locking mechanism is arranged inside the locking screw hole;
[0005] The locking mechanism includes a locking screw. The end of the locking screw is fixedly connected with a first hexagon socket head. Accommodating grooves are opened on the front and back surfaces of the locking screw. Anti-loosening blocks are arranged inside the two accommodating grooves. An anti-loosening screw is arranged between the two anti-loosening blocks. The end of the anti-loosening screw is fixedly connected with a second hexagon socket head. Two anti-loosening nuts are threadedly connected to the anti-loosening screw. Guide sliders are fixedly connected to the two anti-loosening nuts. Inclined surface push blocks are fixedly connected to one side of the two anti-loosening nuts. Limit plates are fixedly connected to both ends of the anti-loosening block. Guide rods are slidably connected to the limit plates. A return spring is sleeved on the guide rods.
[0006] Preferably, the length of the first keyway is greater than the length of the first key bar, and the length of the second keyway is greater than the length of the second mating groove, so as to facilitate installation.
[0007] Preferably, one end of the first fitting groove and the second fitting groove respectively penetrates through the top end and the bottom end of the bushing. The first fitting groove and the second fitting groove respectively match with the first key strip and the second key strip, so that the first key strip and the second key strip can respectively abut against the first fitting groove and the second fitting groove to fix the bushing.
[0008] Preferably, the bushing is in transitional fit with the transmission shaft. The transitional fit enables the bushing to be sleeved on the transmission shaft and remain stable. The locking screw rod matches with the locking screw hole, so that the locking screw rod can be screwed into the locking screw hole for fixation.
[0009] Preferably, the guide rod is fixedly installed inside the locking screw rod. The anti-loosening block is slidably connected with the guide rod through the limiting plate, so as to guide the movement of the anti-loosening block.
[0010] Preferably, two sections of threads with opposite directions are provided on the anti-loosening screw rod, and the two anti-loosening nuts are symmetrically arranged on the anti-loosening screw rod, so that when the anti-loosening screw rod rotates, it can drive the two anti-loosening nuts to move towards or away from each other.
[0011] Preferably, both of the two anti-loosening nuts are slidably connected with the inner wall of the locking screw rod through the guide sliding blocks. The second internal hexagonal head is arranged inside the first internal hexagonal head, so as to guide the movement of the anti-loosening nuts and enable the second internal hexagonal head and the first internal hexagonal head to rotate respectively.
[0012] Preferably, the two inclined plane push blocks are symmetrically arranged on the two anti-loosening nuts, and the inclined surfaces of the two inclined plane push blocks are attached to the limiting plate, so that the two inclined plane push blocks can push the limiting plate to move.
[0013] The utility model provides a shaft connecting device for a stirring device. Compared with the prior art, the following beneficial effects are achieved:
[0014] 1. For the shaft connecting device for the stirring device, first, the first key strip is loaded into the first key groove, then the bushing is hot-fitted onto the transmission shaft, the second key strip is loaded into the second key groove through the installation gap, then the bushing is pushed downward to expose the locking screw hole, and then the first internal hexagonal head is rotated to abut against the first key strip for fixation, effectively improving the connection stability and avoiding safety accidents.
[0015] 2. For the shaft connecting device for the stirring device, by rotating the second internal hexagonal head, the second internal hexagonal head drives the anti-loosening screw rod to rotate, the anti-loosening screw rod drives the two anti-loosening nuts to move, the anti-loosening nuts drive the inclined plane push blocks to move, and the inclined plane push blocks drive the anti-loosening block to move, so that it can be stuck to the inner wall of the locking screw hole, thereby playing a good anti-loosening role. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1Schematic diagram of the overall structure of the present utility model;
[0017] Figure 2 Schematic top view structure diagram of the bushing of the present utility model;
[0018] Figure 3 Schematic structure diagram of the locking mechanism of the present utility model;
[0019] Figure 4 Schematic connection structure diagram between the second hexagon socket head and the anti-loosening block of the present utility model.
[0020] In the figure: 1, bushing; 2, locking mechanism; 201, locking screw; 202, first hexagon socket head; 203, receiving groove; 204, anti-loosening block; 205, anti-loosening screw; 206, second hexagon socket head; 207, anti-loosening nut; 208, guiding slider; 209, inclined plane push block; 210, limiting plate; 211, return spring; 3, transmission shaft; 4, first keyway; 5, second keyway; 6, first mating groove; 7, second mating groove; 8, second key strip; 9, first key strip. Detailed implementation manners
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0022] Please refer to Figures 1-4, the present utility model provides a technical solution: a shaft connection device for a stirring device, including a transmission shaft 3. On one side of the transmission shaft 3, there is a shaft sleeve 1, and the shaft sleeve 1 is connected to the stirring device, enabling the connection between the transmission shaft 3 and the stirring device. The shaft sleeve 1 and the transmission shaft 3 are in transitional fit. Interference fit will cause installation difficulties, and clearance fit is likely to cause the shaking of the stirring device. Transitional fit can make the shaft sleeve 1 sleeved on the transmission shaft 3 and maintain stability. On the top of one side of the transmission shaft 3, there is a first keyway 4, and on the bottom of the other side of the transmission shaft 3, there is a second keyway 5. Inside the first keyway 4, there is a first key 9, and inside the second keyway 5, there is a second key 8. On the top and bottom of the inner surface of the shaft sleeve 1, there are a first mating groove 6 and a second mating groove 7 respectively. The length of the first keyway 4 is greater than the length of the first key 9, and the length of the second keyway 5 is greater than the length of the second mating groove 7, facilitating installation. One end of the first mating groove 6 and the second mating groove 7 respectively penetrates the top and bottom of the shaft sleeve 1, and the first mating groove 6 and the second mating groove 7 respectively match the first key 9 and the second key 8, enabling the first key 9 and the second key 8 to respectively abut against the first mating groove 6 and the second mating groove 7 to fix the shaft sleeve 1. Inside the first keyway 4, there is a locking screw hole, and inside the locking screw hole, there is a locking mechanism 2. The first key 9 can be abutted and locked through the locking mechanism 2, and it can play an anti-loosening role, thereby effectively improving the connection stability.
[0023] The locking mechanism 2 includes a locking screw 201 which is matched with the locking screw hole, enabling the locking screw 201 to be screwed into the locking screw hole for fixation. A first hexagonal socket head 202 is fixedly connected to the end of the locking screw 201, which can be used to press against the first key bar 9. Accommodating grooves 203 are formed on the front and rear surfaces of the locking screw 201. Anti-loosening blocks 204 are arranged inside the two accommodating grooves 203. An anti-loosening screw 205 is arranged between the two anti-loosening blocks 204. A second hexagonal socket head 206 is fixedly connected to the end of the anti-loosening screw 205. Two anti-loosening nuts 207 are threadedly connected to the anti-loosening screw 205. Two sections of threads with opposite directions are arranged on the anti-loosening screw 205, and the two anti-loosening nuts 207 are symmetrically arranged on the anti-loosening screw 205, so that when the anti-loosening screw 205 rotates, it can drive the two anti-loosening nuts 207 to move towards or away from each other. Guide sliders 208 are fixedly connected to the two anti-loosening nuts 207, and the two anti-loosening nuts 207 are slidably connected to the inner wall of the locking screw 201 through the guide sliders 208. The second hexagonal socket head 206 is arranged inside the first hexagonal socket head 202, which can play a guiding role in the movement of the anti-loosening nuts 207 and can rotate the second hexagonal socket head 206 and the first hexagonal socket head 202 respectively. Inclined surface push blocks 209 are fixedly connected to one side of the two anti-loosening nuts 207. Limiting plates 210 are fixedly connected to both ends of the anti-loosening block 204. The two inclined surface push blocks 209 are symmetrically arranged on the two anti-loosening nuts 207, and the inclined surfaces of the two inclined surface push blocks 209 are attached to the limiting plates 210, so that the two inclined surface push blocks 209 can push the limiting plates 210 to move. A guide rod is slidably connected to the limiting plate 210, and the guide rod is fixedly installed inside the locking screw 201. The anti-loosening block 204 is slidably connected to the guide rod through the limiting plate 210, which can play a guiding role in the movement of the anti-loosening block 204. A return spring 211 is sleeved on the guide rod, which can reset the anti-loosening block 204.
[0024] During operation, first install the first key bar 9 into the first key groove 4, then hot-fit the bushing 1 onto the transmission shaft 3. The first mating groove 6 is buckled on the first key bar 9 and presses against the first key groove 4. At the same time, a certain installation gap is left between the second mating groove 7 and the second key groove 5. Install the second key bar 8 into the second key groove 5 through the installation gap. Then push the bushing 1 downward. At the same time, the first key bar 9 moves to expose the locking screw hole. Then rotate the first hexagonal socket head 202, and the first hexagonal socket head 202 rotates to screw the locking screw 201 into the locking screw hole, pressing against the first key bar 9 for fixation, effectively improving the connection stability and avoiding safety accidents.
[0025] Then rotate the second hexagon socket head 206. The rotation of the second hexagon socket head 206 drives the rotation of the lock prevention screw rod 205. The rotation of the lock prevention screw rod 205 drives the movement of the two lock prevention nuts 207. The movement of the lock prevention nuts 207 drives the movement of the inclined plane push block 209. The movement of the inclined plane push block 209 pushes the lock prevention block 204 to move, so that it can be stuck on the inner wall of the locking screw hole, thus playing a very good role in preventing loosening.
[0026] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.
Claims
1. A shaft connection device for a stirring device, comprising a transmission shaft (3), characterized in that: A shaft sleeve (1) is provided on one side of the transmission shaft (3); a first keyway (4) is provided on the top of one side of the transmission shaft (3); a second keyway (5) is provided on the bottom of the other side of the transmission shaft (3); a first key strip (9) is provided inside the first keyway (4); a second key strip (8) is provided inside the second keyway (5); a first matching groove (6) and a second matching groove (7) are provided on the top and bottom of the inner surface of the shaft sleeve (1) respectively; a locking screw hole is provided inside the first keyway (4); a locking mechanism (2) is provided inside the locking screw hole; The locking mechanism (2) comprises a locking screw (201), the end of the locking screw (201) is fixedly connected to a first hexagonal head (202), the front and rear surfaces of the locking screw (201) are both provided with receiving grooves (203), the insides of the two receiving grooves (203) are both provided with anti-loosening blocks (204), an anti-loosening screw (205) is provided between the two anti-loosening blocks (204), and the end of the anti-loosening screw (205) is fixedly connected to a second hexagonal head (202). 06), the anti-loosening screw rod (205) is threadedly connected with two anti-loosening nuts (207), the two anti-loosening nuts (207) are fixedly connected with a guide slider (208), one side of the two anti-loosening nuts (207) is fixedly connected with an inclined push block (209), both ends of the anti-loosening block (204) are fixedly connected with a limit plate (210), the limit plate (210) is slidably connected with a guide rod, and the guide rod is sleeved with a return spring (211).
2. The shaft connecting device for a stirring device according to claim 1, characterized in that: The length of the first key groove (4) is greater than the length of the first key strip (9), and the length of the second key groove (5) is greater than the length of the second matching groove (7).
3. The shaft connecting device for a stirring device according to claim 1, characterized in that: One end of the first matching groove (6) and the second matching groove (7) respectively penetrates the top end and the bottom end of the shaft sleeve (1), and the first matching groove (6) and the second matching groove (7) respectively match the first key strip (9) and the second key strip (8).
4. The shaft connecting device for a stirring device according to claim 1, characterized in that: The shaft sleeve (1) and the transmission shaft (3) are transitionally matched, and the locking screw (201) matches the locking screw hole.
5. The shaft connecting device for a stirring device according to claim 1, characterized in that: The guide rod is fixedly mounted inside the locking screw (201), and the anti-loosening block (204) is slidably connected to the guide rod via a limiting plate (210).
6. The shaft connecting device for a stirring device according to claim 1, characterized in that: The anti-loosening screw (205) is provided with two sections of threads in opposite directions, and the two anti-loosening nuts (207) are symmetrically arranged on the anti-loosening screw (205).
7. The shaft connecting device for a stirring device according to claim 1, characterized in that: The two anti-loosening nuts (207) are both slidably connected to the inner wall of the locking screw (201) via a guide slider (208), and the second hexagonal socket head (206) is arranged inside the first hexagonal socket head (202).
8. The shaft connecting device for a stirring device according to claim 1, characterized in that: The two inclined surface push blocks (209) are symmetrically arranged on the two anti-loosening nuts (207), and the inclined surfaces of the two inclined surface push blocks (209) are in contact with the limiting plate (210).