Shaft driving arm limiting detection structure

Abstract

The utility model relates to a shaft driving arm limiting detection structure which comprises a swing arm, a telescopic mechanism, an expansion sleeve and a positioning piece. One end of the swing arm is rotationally connected with the telescopic end of the telescopic mechanism, and the other end of the swing arm is arranged on the shaft body in a sleeving manner; the expansion sleeve is arranged between the swing arm and the shaft body; wherein a first positioning hole is formed in the swing arm, a positioning groove is formed in the shaft head end of the shaft body, and the positioning piece penetrates through the first positioning hole and the positioning groove at the same time. The telescopic mechanism drives the swing arm to swing so as to drive the shaft body to rotate by a certain angle, and therefore accurate control over the rotating angle of the shaft body is achieved. And the working state of the expansion sleeve is judged by observing the appearance of the positioning piece. Through the arrangement of the first positioning hole, the positioning groove and the positioning piece, the working condition between the shaft body and the driving arm can be rapidly judged without measurement or equipment disassembly and assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of drive arms, in particular to a limit detection structure of a shaft drive arm. Background Art

[0002] Shafts are indispensable components in mechanical equipment. They can transmit power from one part to another and play a key role in the normal operation and performance of the equipment.

[0003] To achieve precise control and motion transmission in mechanical systems, shafts within the equipment must rotate at a certain angle. This ability to rotate the drive shaft at a certain angle is crucial for many applications, such as robotics and automated equipment, especially when high-precision position adjustment is required. This fixed-angle rotation is achieved using a drive arm, which is secured to the shaft via a locking sleeve. The swinging motion of the drive arm drives the shaft's rotation. However, as the shaft rotates more frequently and the locking sleeve ages and wears, the fixed angle between the drive arm and the shaft inevitably shifts, necessitating regular inspection and maintenance of the locking sleeve, which can affect the proper functioning of the mechanical equipment.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Utility Model Content

[0005] In view of the above shortcomings of the prior art, the purpose of the present invention is to provide a shaft drive arm limit detection structure to strengthen the connection strength between the drive arm and the shaft body and automatically detect the connection angle of the drive arm on the shaft body.

[0006] The technical solution of the utility model is as follows:

[0007] A shaft drive arm limit detection structure, the shaft drive arm limit detection structure includes a swing arm, a telescopic mechanism, an expansion sleeve and a positioning piece;

[0008] One end of the swing arm is rotatably connected to the telescopic end of the telescopic mechanism, and the other end of the swing arm is sleeved on the shaft;

[0009] The expansion sleeve is arranged between the swing arm and the shaft body;

[0010] Wherein, a first positioning hole is provided on the swing arm, a positioning groove is provided on the shaft head end of the shaft body, and the positioning member passes through the first positioning hole and the positioning groove at the same time.

[0011] A further technical solution is that at least two first positioning holes are provided on the swing arm; and the swing arm is rotated around the axis so that the positioning grooves are aligned with different positioning holes.

[0012] A further technical solution is that a second positioning hole is further provided in the positioning groove.

[0013] A further technical solution is that the swing arm includes a circular ring segment and a connecting segment; a circular hole is opened on the circular ring segment for the shaft to pass through, and the connecting segment is in the shape of a triangular plate.

[0014] A further technical solution is that the positioning member is a plate.

[0015] A further technical solution is that the end of the telescopic mechanism away from the telescopic end is a fixed end, the fixed end is hinged at the installation position, and the telescopic end is hinged to the swing arm.

[0016] A further technical solution is that the telescopic mechanism is an oil cylinder.

[0017] A further technical solution is that the shaft body is fixed in the installation position by a bearing seat.

[0018] The beneficial technical effects of the present utility model are as follows:

[0019] (1) The shaft drive arm limit detection structure in the present invention is provided with a swing arm, a telescopic mechanism and a tension sleeve, and the swing arm is arranged on the shaft body through the tension sleeve. The swing arm is driven to swing by the telescopic mechanism to drive the shaft body to rotate at a certain angle, thereby realizing precise control of the shaft body rotation angle. At the same time, a first positioning hole is provided on the swing arm, and a positioning groove is provided on the shaft body, so that the positioning member passes through the first positioning hole and the positioning groove at the same time to limit the angular relationship between the swing arm and the shaft body, thereby ensuring the accuracy of the shaft head rotation angle. In addition, the positioning groove is provided at the shaft head end of the shaft body. After the positioning member is extended into the positioning groove along the first positioning hole, the positioning member can be directly viewed from the outside of the shaft body. If the shape of the positioning member does not change, the angle between the swing arm and the shaft body does not change, and the tension sleeve works normally; if the shape of the positioning member changes, the angle between the swing arm and the shaft body changes, and the tension sleeve needs to be maintained. By setting the first positioning hole, the positioning groove and the positioning member, the working condition between the shaft body and the drive arm can be quickly judged without measuring or disassembling the equipment.

[0020] (2) Furthermore, at least two first positioning holes are provided on the swing arm, and the positioning piece is inserted into the positioning groove along different first positioning holes to achieve fast positioning of the swing arm and the shaft body at a fixed angle.

[0021] (3) Furthermore, a second positioning hole is provided in the positioning groove. After the positioning member is inserted into the positioning groove, the position of the positioning member in the positioning groove can be fixed by the fastener and the second positioning hole, thereby enhancing the connection strength between the positioning member and the positioning groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1The main structural diagram of the shaft drive arm limit detection structure of the present utility model is shown.

[0023] Figure 2 The figure shows the matching structure of the swing arm, the expansion sleeve and the shaft body in the shaft drive arm limit detection structure of the present invention.

[0024] Figure 3 A side structural schematic diagram of the shaft body in the shaft drive arm limit detection structure of the present invention is shown.

[0025] Markings in the accompanying drawings:

[0026] 1. Telescopic mechanism; 11. Telescopic end; 12. Fixed end; 2. Swing arm; 21. First positioning hole; 22. Circular ring segment; 23. Connecting segment; 3. Positioning piece; 4. Expansion sleeve; 5. Shaft; 51. Bearing seat; 52. Positioning groove; 53. Second positioning hole. DETAILED DESCRIPTION

[0027] To make the purposes, features, and advantages of this utility model more clearly understood, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in this specification for the understanding and reading of those familiar with this technology. They are not intended to limit the conditions for the implementation of this utility model and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, as long as they do not affect the efficacy and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0028] In the description of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like are defined as indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0029] Figure 1 The main structural diagram of the shaft drive arm limit detection structure of the present utility model is shown. Figure 2 The figure shows the matching structure of the swing arm, the expansion sleeve and the shaft body in the shaft drive arm limit detection structure of the present invention. Figure 3 The side view of the shaft body in the shaft drive arm limit detection structure of the utility model is shown. Figure 1 、 Figure 2 and Figure 3, the shaft drive arm limit detection structure, the shaft drive arm limit detection structure includes a swing arm 2, a telescopic mechanism 1, a tightening sleeve 4 and a positioning member 3. One end of the swing arm 2 is rotatably connected to the telescopic end 11 of the telescopic mechanism 1, and the other end of the swing arm 2 is sleeved on the shaft body 5, and the shaft body 5 is fixed in the installation position by the bearing seat 51. The end of the telescopic mechanism 1 away from the telescopic end 11 is the fixed end 12, and the fixed end 12 is hinged at the installation position, and the telescopic end 11 is hinged to the swing arm 2. The tightening sleeve 4 is arranged between the swing arm 2 and the shaft body 5. The swing arm 2 is driven to swing by the telescopic mechanism 1 to drive the shaft body 5 to rotate at a certain angle, thereby realizing precise control of the rotation angle of the shaft body 5.

[0030] Among them, a first positioning hole 21 is provided on the swing arm 2, and a positioning groove 52 is provided on the shaft head end of the shaft body 5. The positioning member 3 passes through the first positioning hole 21 and the positioning groove 52 at the same time to limit the angular relationship between the swing arm 2 and the shaft body 5, thereby ensuring the accuracy of the shaft head rotation angle. In addition, the positioning groove 52 is provided at the shaft head end of the shaft body 5. After the positioning member 3 extends into the positioning groove 52 along the first positioning hole 21, the positioning member 3 can be directly viewed from the outside of the shaft body 5. If the shape of the positioning member 3 does not change, the angle between the swing arm 2 and the shaft body 5 does not change, and the expansion sleeve 4 works normally; if the shape of the positioning member 3 changes, the angle between the swing arm 2 and the shaft body 5 changes, and the expansion sleeve 4 needs to be maintained. Through the setting of the first positioning hole 21, the positioning groove 52 and the positioning member 3, the working condition between the shaft body 5 and the drive arm can be quickly judged without measuring or disassembling the equipment.

[0031] Preferably, the telescopic mechanism 1 is an oil cylinder, which has a large thrust and operates smoothly, and is convenient for accurately adjusting the rotation angle of the shaft 5.

[0032] Please refer to Figure 1 and Figure 2 At least two first positioning holes 21 are formed on the swing arm 2. By rotating the swing arm 2 about the shaft 5, the positioning slots 52 align with different positioning holes. The positioning member 3 engages the positioning slots 52 along different first positioning holes 21, achieving rapid positioning of the swing arm 2 and the shaft 5 at a fixed angle.

[0033] Preferably, the swing arm 2 includes a circular ring segment 22 and a connecting segment 23. The circular ring segment 22 has a circular hole for the shaft 5 to pass through. The connecting segment 23 is triangular in shape. The triangle is one of the most stable geometric shapes, allowing the triangular connecting segment 23 to effectively distribute forces and reduce deformation and displacement. This allows the connecting segment 23 to stably transmit torque to the shaft 5.

[0034] Please refer to Figure 1 and Figure 2 A second positioning hole 53 is further provided in the positioning groove 52. After the positioning member 3 is inserted into the positioning groove 52, the position of the positioning member 3 in the positioning groove 52 can be fixed by the fastener and the second positioning hole 53, thereby enhancing the connection strength between the positioning member 3 and the positioning groove 52.

[0035] Preferably, the positioning member 3 is a plate. After the positioning member 3 of the plate is inserted into the positioning groove 52, the contact area between the positioning member 3 and the positioning groove 52 is larger, thereby improving the strength of the angle fixation between the swing arm 2 and the shaft body 5.

[0036] The specific workflow of this utility model is as follows:

[0037] When assembling the drive arm, first place the swing arm 2 over the shaft 5, insert the expansion sleeve 4 between the swing arm 2 and the shaft 5, and after adjusting the positional angle between the swing arm 2 and the shaft 5, tighten the expansion sleeve 4. Insert the positioning member 3 into both the first positioning hole 21 and the positioning slot 52 simultaneously. While the drive arm continues to swing, maintenance personnel observe the shape of the positioning member 3 within the positioning slot 52 to determine the operating status of the expansion sleeve 4. If the shape of the positioning member 3 remains unchanged, the angle between the swing arm 2 and the shaft 5 remains unchanged, and the expansion sleeve 4 is functioning normally. If the shape of the positioning member 3 changes, the angle between the swing arm 2 and the shaft 5 changes, and the expansion sleeve 4 requires maintenance.

[0038] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person of ordinary skill in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. The shaft drive arm limit detection structure is characterized by: The shaft drive arm limit detection structure includes a swing arm, a telescopic mechanism, an expansion sleeve and a positioning piece; One end of the swing arm is rotatably connected to the telescopic end of the telescopic mechanism, and the other end of the swing arm is sleeved on the shaft; The expansion sleeve is arranged between the swing arm and the shaft body; Wherein, a first positioning hole is provided on the swing arm, a positioning groove is provided on the shaft head end of the shaft body, and the positioning member passes through the first positioning hole and the positioning groove at the same time.

2. The shaft drive arm limit detection structure according to claim 1, characterized in that: At least two first positioning holes are formed on the swing arm; when the swing arm is rotated around the shaft, the positioning grooves are aligned with different positioning holes.

3. The shaft drive arm limit detection structure according to claim 1, characterized in that: A second positioning hole is also provided in the positioning groove.

4. The shaft drive arm limit detection structure according to claim 1, wherein: The swing arm includes a circular ring segment and a connecting segment; a circular hole is opened on the circular ring segment for the shaft body to pass through, and the connecting segment is in the shape of a triangular plate.

5. The shaft drive arm limit detection structure according to claim 1, wherein: The positioning member is a plate member.

6. The shaft drive arm limit detection structure according to claim 1, characterized in that: One end of the telescopic mechanism away from the telescopic end is a fixed end, the fixed end is hinged at the installation position, and the telescopic end is hinged to the swing arm.

7. The shaft drive arm limit detection structure according to claim 1, wherein: The telescopic mechanism is an oil cylinder.

8. The shaft drive arm limit detection structure according to claim 1, wherein: The shaft body is fixed in the installation position by a bearing seat.

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