Torque limiting device

Abstract

The utility model discloses a torque limiting device. The torque limiting device comprises a shell, a driving assembly arranged in the shell, a compression spring arranged on the driving assembly in a sleeving mode and a gland matched with the shell. The driving assembly comprises a driving shaft and a driven shaft matched with the driving shaft. And the driving shaft and the driven shaft are released through the pressure spring when the driven shaft is stuck, so that the purposes of improving the use safety of the driving equipment and prolonging the service life of the driving equipment are achieved.

Description

Technical Field

[0001] This utility model relates to the field of production safety applications in mechanical equipment, specifically to a torque limiting device. Background Technology

[0002] In existing technologies, if excessive torque is applied to mechanical equipment during operation, or if the driven part becomes jammed, the continued rotation of the drive shaft can damage or even destroy the drive equipment, affecting the operation of the entire equipment.

[0003] How to limit torque to improve the safety of drive equipment is a technical problem that urgently needs to be solved at present.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model proposes a torque limiting device to effectively disconnect the drive shaft from the driven shaft and improve the safety of the drive equipment.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A torque limiting device includes a housing, a drive assembly disposed within the housing, a compression spring sleeved on the drive assembly, and a pressure cap that cooperates with the housing;

[0008] The housing has an internal placement groove for the drive assembly to cooperate with, and a vertical groove is provided on one side of the housing to communicate with the placement groove. The pressure cover is adapted to the vertical groove, and the pressure cover is installed in the vertical groove by screws.

[0009] The center of the pressure cap is provided with a first through hole;

[0010] The drive assembly includes a drive shaft and a driven shaft that cooperates with the drive shaft. The bottom end of the driven shaft passes through the first through hole, and the bottom end of the drive shaft engages with the head end of the driven shaft. The compression spring is sleeved on the driven shaft and is located in the placement groove.

[0011] This invention uses a compression spring to release the drive shaft from the driven shaft when the driven shaft is jammed, thereby improving the safety of the drive equipment and extending its service life.

[0012] It is also worth noting that the drive shaft includes a connecting shaft for connecting to an external drive device and a drive connecting end disposed at the end of the connecting shaft, wherein a ring of wavy meshing teeth is provided on the outer side of the drive connecting end.

[0013] The driven shaft includes a driven rod, a driven connecting end disposed at the head end of the driven rod, and a protrusion disposed at the tail end of the driven rod; the outer surface of the driven connecting end is also provided with a ring of wavy meshing teeth that mesh with the meshing teeth provided at the drive connecting end; the driven rod is located in the placement groove, and the compression spring is sleeved on the driven rod; the diameter of the compression spring is larger than the diameter of the second through hole in the placement groove through which the protrusion passes; the protrusion passes through the first through hole and is located outside the housing.

[0014] This utility model has the following advantages:

[0015] 1. This utility model uses a compression spring to release the drive shaft from the driven shaft when the driven shaft is jammed, thereby improving the safety of the drive equipment and extending its service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is an exploded view of a torque limiting device disclosed in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the linkage of a torque limiting device disclosed in an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the idling of a torque limiting device disclosed in an embodiment of the present utility model;

[0020] The numbers and letters in the figure represent the corresponding component names:

[0021] 1. Housing 11. Placement slot 12. Vertical slot 21. Drive shaft 211. Connecting shaft 212. Drive connection end

[0022] 213. Meshing teeth 22. Driven shaft 221. Driven rod 222. Driven connection end 223. Protrusion

[0023] 224. Second through hole 3. Compression spring 4. Pressure cap 41. First through hole. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] This utility model provides a torque limiting device, which works by using a compression spring to release the drive shaft from the driven shaft when the driven shaft is jammed, thereby improving the safety of the drive equipment and extending its service life.

[0026] The present invention will be further described in detail below with reference to embodiments and specific implementation methods.

[0027] like Figure 1-Figure 3 As shown, a torque limiting device includes a housing 1, a drive assembly disposed within the housing, a compression spring 3 sleeved on the drive assembly, and a pressure cap 4 that cooperates with the housing;

[0028] The housing has an internal placement groove 11 for the drive assembly to cooperate with, and a vertical groove 12 communicating with the placement groove is provided on one side of the housing. The pressure cover is adapted to the vertical groove, and the pressure cover is installed in the vertical groove by screws.

[0029] The center of the pressure cap is provided with a first through hole 41;

[0030] The drive assembly includes a drive shaft 21 and a driven shaft 22 that cooperates with the drive shaft. The bottom end of the driven shaft passes through the first through hole, and the bottom end of the drive shaft meshes with the head end of the driven shaft. The compression spring is sleeved on the driven shaft and located within the placement groove. Specifically:

[0031] The drive shaft includes a connecting shaft 211 that is connected to an external drive device and a drive connecting end 212 disposed at the end of the connecting shaft. A ring of wavy meshing teeth 213 is disposed on the outer side of the drive connecting end.

[0032] The driven shaft includes a driven rod 221, a driven connecting end 222 disposed at the head end of the driven rod, and a protrusion 223 disposed at the tail end of the driven rod; the outer surface of the driven connecting end is also provided with a ring of wavy meshing teeth that mesh with the meshing teeth provided at the drive connecting end; the driven rod is located in the placement groove, and the compression spring is sleeved on the driven rod; the diameter of the compression spring is larger than the diameter of the second through hole 224 through which the protrusion passes in the placement groove; the protrusion passes through the first through hole and is located outside the housing.

[0033] The specific steps for using this utility model are as follows: In the linkage state, such as Figure 1 and Figure 2 As shown, under the pressure of the compression spring 3, the driven connection end 222 and the driving connection end 212 are engaged together by the meshing teeth 213 provided at their ends. At this time, when the driving shaft rotates, it drives the driven shaft to rotate.

[0034] When the driven shaft becomes stuck due to external influences, the drive shaft continues to rotate. When the torque of the drive shaft overcomes the pressure of the compression spring, the meshing surface of the drive shaft pushes the driven shaft backward as a whole. At this point, the drive shaft and driven shaft disengage, and the drive shaft idles, thus protecting the drive equipment. Figure 3 As shown.

[0035] Through the above methods, the torque limiting device provided by this utility model realizes the release of the drive shaft and driven shaft when the driven shaft is jammed by the compression spring, thereby improving the safety of the drive equipment and extending its service life.

[0036] The above description is only a preferred embodiment of a torque limiting device disclosed in this utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A torque limiting device, characterized in that, It includes a housing, a drive assembly disposed within the housing, a compression spring sleeved on the drive assembly, and a pressure cap that cooperates with the housing; The housing has an internal placement groove for the drive assembly to cooperate with, and a vertical groove is provided on one side of the housing to communicate with the placement groove. The pressure cover is adapted to the vertical groove, and the pressure cover is installed in the vertical groove by screws. The center of the pressure cap is provided with a first through hole; The drive assembly includes a drive shaft and a driven shaft that cooperates with the drive shaft. The bottom end of the driven shaft passes through the first through hole, and the bottom end of the drive shaft engages with the head end of the driven shaft. The compression spring is sleeved on the driven shaft and is located in the placement groove.

2. The torque limiting device according to claim 1, characterized in that, The drive shaft includes a connecting shaft that connects to an external drive device and a drive connecting end disposed at the end of the connecting shaft. A ring of wavy meshing teeth is provided on the outer side of the drive connecting end. The driven shaft includes a driven rod, a driven connecting end disposed at the head end of the driven rod, and a protrusion disposed at the tail end of the driven rod; the outer surface of the driven connecting end is also provided with a ring of wavy meshing teeth that mesh with the meshing teeth provided at the drive connecting end; the driven rod is located in the placement groove, and the compression spring is sleeved on the driven rod; the diameter of the compression spring is larger than the diameter of the second through hole in the placement groove through which the protrusion passes; the protrusion passes through the first through hole and is located outside the housing.

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