Output shaft locking device
By designing an output shaft locking device with deformable cone sleeve and cone surface, the problems of high prices and high maintenance costs of existing devices are solved, and flexible adjustment of locking torque and cost reduction are achieved.
Patent Information
- Application Number
- CN202420703038.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-04-07
AI Technical Summary
The existing output shaft locking device is expensive. After changing the shaft diameter in the later stage, it requires a complete set of tightening sleeves to be replaced. After-sales maintenance costs are high, and the optional shaft diameter of the standard tightening sleeves is limited. Special sizes require customization, and the customization period is long and the price is high.
An output shaft locking device including a deformable cone sleeve, a transmission shaft and a client connection shaft is designed. The locking torque is adjusted through the tapered surface fit and the bolted connection structure. A groove is opened on the cone sleeve to increase the shrinkage deformation amount.
It realizes flexible adjustment of locking torque, reduces maintenance costs, has a wide range of application, low price and short delivery time.
Smart Images
Figure CN222559031U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a mechanical locking structure, in particular to an output shaft locking device. Background Art
[0002] The output shaft locking device of the prior art generally adopts standard tension sleeves for locking, which is generally expensive, and the tension sleeves need to be replaced as a set to change the shaft diameter later, which leads to high after-sales maintenance costs. At the same time, the standard tension sleeves have relatively few optional shaft diameters. When designing, the shaft size needs to be designed according to the manufacturer's tension sleeves. Special sizes need to be specially customized from the tension sleeve manufacturer, which has a long delivery time and high prices. Utility Model Content
[0003] The technical problem to be solved by the utility model is: to provide an output shaft locking device in order to overcome the deficiencies in the prior art.
[0004] The utility model solves the technical problem by adopting the following technical solution: an output shaft locking device, comprising a tapered sleeve, a transmission shaft and a client connecting shaft, the outside of the tapered sleeve is a tapered shape with a narrow front and a wide rear, the rear end of the transmission shaft has a tapered chamber with a narrow front and a wide rear, the end of the client connecting shaft is a cylindrical connecting part, the cylindrical connecting part is plugged into the inside of the tapered sleeve, the tapered sleeve and the transmission shaft are plugged into each other through an external axial connecting structure, the tapered sleeve is plugged into the tapered chamber at the rear end of the transmission shaft, and a tapered surface fit is formed between the outside of the tapered sleeve and the tapered chamber;
[0005] The conical surface of the conical sleeve is provided with at least one slot for deforming and locking the cylindrical connecting part at the end of the client connecting shaft when the conical sleeve is matched with the conical surface of the transmission shaft.
[0006] Furthermore, there is a step-shaped limiting surface between the cone sleeve and the cylindrical connecting portion, and the limiting surface is disposed against the cone sleeve.
[0007] Furthermore, the end where the cone sleeve is sleeved with the cylindrical connecting part at the end of the client connecting shaft is the rear end, the outer diameter of the cone sleeve decreases from the back to the front, and the inner diameter of the cone sleeve is equal from the back to the front;
[0008] The slot on the cone sleeve is in the shape of a long strip with one end open, and the open end extends from the front end of the cone sleeve to the rear end of the cone sleeve.
[0009] Furthermore, when there are a plurality of slots, the slots are evenly distributed on the cone sleeve.
[0010] Furthermore, the length of the slot is 1 / 2 to 2 / 3 of the length of the cone sleeve.
[0011] Furthermore, the axial connection structure is specifically a bolt connection structure, the outer side of the opening end of the conical chamber has an upper connection part, the outer side of the rear end of the conical sleeve has a lower connection part, and the upper connection part and the lower connection part are fastened by bolts to form a bolt connection structure.
[0012] The beneficial effects of the utility model are as follows: an output shaft locking device of the utility model is connected to the client connecting shaft through a deformable cone sleeve, and the locking torque is adjusted by the tightening torque of the bolt;
[0013] The deformable cone sleeve is sleeved on the connecting shaft of the client, and the transmission shaft and the deformable cone sleeve are matched with each other by cone surfaces. By tightening the bolts, the deformable cone sleeve is squeezed, deformed and contracted, thereby locking the connecting shaft of the client;
[0014] A slot is provided on the conical surface of the deformable cone sleeve, which can make the deformable cone sleeve shrink more during the extrusion deformation and shrinkage process, thereby obtaining a larger locking torque;
[0015] The locking torque of the locking device can be adjusted by the tightening torque of the bolt and the slot size of the slot on the deformable cone sleeve. The inner hole opening size of the deformable cone sleeve can be designed according to customer needs, and the opening range is large. When the opening diameter is too small and the wall thickness of the deformable cone sleeve is too large, the shrinkage deformation of the deformable cone sleeve can be increased by increasing the number of slots, thereby increasing the locking torque.
[0016] In summary, the utility model has the characteristics of wide application range, low price, short delivery time and low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is a structural schematic diagram of the utility model.
[0019] Figure 2 It is a structural schematic diagram of the cone sleeve of the utility model.
[0020] In the figure: 1. tapered sleeve, 2. transmission shaft, 3. client connecting shaft, 4. cylindrical connecting part, 5. slot, 6. upper connecting part, 7. lower connecting part. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] Figure 1 and Figure 2 An output shaft locking device shown in the figure comprises a taper sleeve 1, a transmission shaft 2 and a client connecting shaft 3. The outside of the taper sleeve 1 is a tapered shape that is narrow in the front and wide in the rear. The rear end of the transmission shaft 2 has a tapered chamber that is narrow in the front and wide in the rear. The end of the client connecting shaft 3 is a cylindrical connecting part 4, which is inserted into the inside of the taper sleeve 1. There is a stepped limiting surface between the cylindrical connecting part 4 and the taper sleeve 1. The limiting surface abuts against the taper sleeve 1 to prevent the cylindrical connecting part 4 from extending too far and abutting against the tapered chamber during subsequent tightening to affect the locking effect.
[0023] The cone sleeve 1 and the transmission shaft 2 are plug-connected to each other through an external axial connection structure. The specific axial connection structure is a bolt connection structure. The outer side of the opening end of the cone chamber is provided with an upper connection part 6, and the outer side of the rear end of the cone sleeve 1 is provided with a lower connection part 6. The upper connection part 6 and the lower connection part 7 are fastened by bolts to form a bolt connection structure. The cone sleeve 1 is inserted into the cone chamber at the rear end of the transmission shaft 2, and a conical surface is formed between the outside of the cone sleeve 1 and the conical chamber. A straight groove 5 is opened on the conical surface of the cone sleeve 1. When the cone sleeve 1 cooperates with the conical surface of the transmission shaft, the deformation locks the client connecting shaft 3.
[0024] Specifically, one end of the cylindrical connecting part of the tapered sleeve 1 and the end of the client connecting shaft 3 is sleeved as the rear end, the outer diameter of the tapered sleeve 1 decreases from the back to the front, and the inner diameter of the tapered sleeve 1 is equal from the back to the front; the straight groove 5 on the tapered sleeve 1 is a long strip with one end open, and the open end extends from the front end of the tapered sleeve 1 to the rear end of the tapered sleeve, and the length of the straight groove 5 is 1 / 2 to 2 / 3 of the length of the tapered sleeve 1; when the number of the straight grooves 5 is multiple, the straight grooves are evenly arranged on the tapered sleeve 1.
[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An output shaft locking device, characterized in that: It includes a tapered sleeve, a transmission shaft and a client connecting shaft. The outside of the tapered sleeve is a tapered shape that is narrow at the front and wide at the rear. The rear end of the transmission shaft has a tapered chamber that is narrow at the front and wide at the rear. The end of the client connecting shaft is a cylindrical connecting part, which is inserted into the inside of the tapered sleeve. The tapered sleeve and the transmission shaft are plugged into each other through an external axial connecting structure. The tapered sleeve is inserted into the tapered chamber at the rear end of the transmission shaft, and a conical surface fit is formed between the outside of the tapered sleeve and the tapered chamber. The conical surface of the conical sleeve is provided with at least one slot for deforming and locking the cylindrical connecting part at the end of the client connecting shaft when the conical sleeve is matched with the conical surface of the transmission shaft.
2. An output shaft locking device according to claim 1, characterized in that: There is a step-shaped limiting surface between the cone sleeve and the cylindrical connecting portion, and the limiting surface is disposed against the cone sleeve.
3. The output shaft locking device according to claim 1, characterized in that: The end where the cone sleeve is sleeved with the cylindrical connecting part at the end of the client connecting shaft is the rear end, the outer diameter of the cone sleeve decreases from the back to the front, and the inner diameter of the cone sleeve is equal from the back to the front; The slot on the cone sleeve is in the shape of a long strip with one end open, and the open end extends from the front end of the cone sleeve to the rear end of the cone sleeve.
4. An output shaft locking device according to claim 1 or 3, characterized in that: When there are a plurality of slots, the slots are evenly distributed on the cone sleeve.
5. The output shaft locking device according to claim 4, characterized in that: The length of the slot is 1 / 2 to 2 / 3 of the length of the cone sleeve.
6. The output shaft locking device according to claim 1, characterized in that: The axial connection structure is specifically a bolt connection structure, wherein the outer side of the opening end of the conical chamber has an upper connection part, and the outer side of the rear end of the conical sleeve has a lower connection part, and the upper connection part and the lower connection part are fastened by bolts to form a bolt connection structure.