Structure for preventing swing seat fixing shaft from rotating
By setting through holes and grooves on the swing seat and fixed shaft, and inserting connecting protrusions to synchronously limit rotation, the problem of high machining requirements and high shear force in the relative stationary state of the swing seat and the fixed shaft is solved, and higher stability and strength are achieved.
Patent Information
- Application Number
- CN202421725369.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-07-19
AI Technical Summary
In the prior art, the relative stationary state between the swing seat and the swing seat fixed shaft is ensured, and the through-hole processing of the shaft sleeve is high, and the pin bearings are subjected to very large shear forces, so there is room for improvement.
The through hole and groove structure is adopted, and the relative rotation of the swing seat and the fixed shaft is synchronized by inserting the connecting projection into the through hole and groove, thereby eliminating the rotation gap and ensuring a relatively stationary state.
Through this structure, the relative rotation between the swing seat and the fixed shaft is eliminated, the processing requirements for the through hole are reduced, and the shear force that the connecting projection is subjected to is reduced, thereby improving the stability and strength of the structure.
Smart Images
Figure CN222887145U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of engineering boom technology, and in particular to a structure for preventing the rotation of a swing seat fixed shaft. Background Art
[0002] In the application of the boom system equipped in construction machinery, the slewing bearing can ensure that the boom realizes 360° rotation. In the case of a multi-boom combination, there is also a way to drive the swing seat with a swing cylinder to realize a small-angle rotation of the boom. This method of controlling the swing angle of the boom through the cylinder stroke is more reliable than the method using a slewing bearing plus a proximity switch. In special cases, we need to ensure that the swing seat and the swing seat fixed shaft (i.e., the hinge shaft between the swing seat and the vehicle frame) are in a relatively static state. Then we need to fix the swing seat fixed shaft to the swing seat. A relatively common method is to penetrate the swing seat and the fixed shaft with a pin shaft to restrict the relative rotation of the two. This method has relatively high processing requirements for the through hole (pin shaft through hole) on the bushing. It is necessary for the center line of the through hole to intersect with the center line of the bushing to facilitate installation. In addition, the pin shaft of this structure bears a very large shear force, and has high requirements for the strength of the pin shaft.
[0003] In summary, in the prior art, to ensure the relative static state between the swing seat and the swing seat fixed shaft, the processing requirements for the through hole of the bushing are relatively high, and the pin shaft bears a very large shear force. Therefore, there is room for further improvement. Utility Model Content
[0004] In view of this, the present application provides a structure for preventing the rotation of a swing seat fixed shaft, which can eliminate the rotation gap and ensure that the fixed shaft and the swing seat are in a relatively static state.
[0005] The structure for preventing the rotation of a swing seat fixed shaft provided by the present application adopts the following technical solution:
[0006] A structure for preventing the rotation of a swing seat fixed shaft includes a swing seat and a fixed shaft. The swing seat is connected to the fixed shaft. A through hole is provided on the swing seat, and a groove is provided on the fixed shaft. A connecting protrusion is provided between the through hole of the swing seat and the groove of the fixed shaft.
[0007] By adopting the above technical solution, the through hole and the groove can be radially opened or inclined to the radial direction. When the user needs the fixed shaft and the swing seat to be in a relatively static state, the user inserts and connects the connecting protrusion into the through hole of the swing seat and the groove of the fixed shaft, so that the swing seat and the fixed shaft are synchronously restricted in the radial direction through the connecting protrusion, thereby preventing relative rotation between the swing seat and the fixed shaft. In this way, the rotation gap is eliminated, and the fixed shaft and the swing seat are ensured to be in a relatively static state.
[0008] Preferably, a sealing plate is provided on the swing seat, and the sealing plate covers the connecting protrusion.
[0009] By adopting the above technical solution, since the connecting protrusion has been radially inserted to define the swing seat and the fixed shaft, covering the connecting protrusion with the sealing plate is beneficial to fixing the position of the connecting protrusion on the swing seat and the fixed shaft, and preventing the connecting protrusion from falling off the swing seat and the fixed shaft.
[0010] Preferably, a sealing plate groove is formed on the swing seat, and a sealing plate is arranged in the sealing plate groove, and the sealing plate covers the connecting protrusion.
[0011] By adopting the above technical solution, the position of the sealing plate is defined by setting the sealing plate groove, thereby ensuring the stability of the sealing plate in defining the connecting protrusion.
[0012] Preferably, a swing seat groove is formed on the swing seat near the through hole, and the swing seat groove facilitates the cooperation of the connecting protrusion with the through hole.
[0013] By adopting the above technical solution, the swing seat at the connection position of the connecting protrusion and the fixed shaft is relatively thin and light, which is convenient for the simultaneous connection of the connecting protrusion with the swing seat and the fixed shaft. And because the connection position of the swing seat is relatively thin and light, the length of the connecting protrusion is also shorter. Furthermore, the shear force when the connecting protrusion connects the fixed shaft and the swing seat is lower, and the bearing capacity of the connecting protrusion is stronger.
[0014] Preferably, the swing seat includes a first connection seat, and the first connection seat includes a first connection ear, a second connection ear and a first connection shaft. The first connection ear and the second connection ear are arranged in parallel, and one end of the first connection shaft is connected to the first connection ear, and the other end is connected to the second connection ear.
[0015] Preferably, the swing seat includes a second connection seat, and the second connection seat includes a third connection ear, a fourth connection ear and a second connection shaft. The third connection ear and the fourth connection ear are arranged in parallel, and one end of the second connection shaft is connected to the third connection ear, and the other end is connected to the fourth connection ear.
[0016] Preferably, the third connection ear and the fourth connection ear have an angle.
[0017] Preferably, the swing seat includes a third connection seat, and the third connection seat includes a first connecting plate, a second connecting plate and a third connection shaft. The first connecting plate and the second connecting plate are arranged in parallel, and one end of the third connection shaft is connected to the first connecting plate, and the other end is connected to the second connecting plate.
[0018] Preferably, a support plate is arranged between the first connecting plate and the second connecting plate.
[0019] In summary, the present application includes at least one of the following beneficial technical effects:
[0020] 1. The through holes and grooves can be opened radially or obliquely to the radial direction. When the user needs the fixed shaft and the swing seat to be in a relatively stationary state, the user inserts and connects the connecting protrusion into the through hole of the swing seat and the groove of the fixed shaft, so that the swing seat and the fixed shaft are synchronously restricted in the radial direction through the connecting protrusion, thereby preventing relative rotation between the swing seat and the fixed shaft. In this way, the rotational clearance is eliminated, and the fixed shaft and the swing seat are ensured to be in a relatively stationary state;
[0021] 2. Since the connecting protrusion has been inserted radially to define the swing seat and the fixed shaft, covering the connecting protrusion with the sealing plate is beneficial to fixing the position of the connecting protrusion on the swing seat and the fixed shaft, and preventing the connecting protrusion from falling off the swing seat and the fixed shaft;
[0022] 3. A sealing plate groove is provided on the swing seat, and a sealing plate is provided in the sealing plate groove, and the sealing plate covers the connecting protrusion;
[0023] 4. The swing seat at the connection position of the connecting protrusion and the fixed shaft is relatively thin and light, which is convenient for connecting the connecting protrusion with the swing seat and the fixed shaft at the same time. And because the connection position of the swing seat is relatively thin and light, the length of the connecting protrusion is also shorter, so that the shear force when the connecting protrusion connects the fixed shaft and the swing seat is lower, and the bearing capacity of the connecting protrusion is stronger. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic structural diagram of the structure for preventing the swing seat from rotating relative to the fixed shaft in this embodiment;
[0025] Figure 2 It is an exploded view of the structure for preventing the swing seat from rotating relative to the fixed shaft in this embodiment;
[0026] Figure 3 It is a sectional view of the structure for preventing the swing seat from rotating relative to the fixed shaft in this embodiment.
[0027] Reference numerals: 1, swing seat; 2, fixed shaft; 3, through hole; 4, groove; 5, connecting protrusion; 6, sealing plate; 7, sealing plate groove; 8, swing seat groove; 9, first connection seat; 10, first connection ear; 11, second connection ear; 12, first connection shaft; 13, second connection seat; 14, third connection ear; 15, fourth connection ear; 16, second connection shaft; 17, third connection seat; 18, first connection plate; 19, second connection plate; 20, third connection shaft; 21, support plate; 22, bushing; 23, through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0028] The following will further describe the present application in detail with reference to the attached Figures 1 - 3 drawings.
[0029] An embodiment of the present application discloses a structure for preventing the rotation of a fixed shaft of a swing seat.
[0030] Referring to Figure 1 、 Figure 2 and Figure 3 ,it includes a swing seat 1 and a fixed shaft 2. The swing seat 1 includes a bushing 22 and a first connecting seat 9. The bushing 22 is integrally connected to the first connecting seat 9. A through hole 23 is axially formed in the bushing 22. The fixed shaft 2 is located in the through hole 23 of the bushing 22, so that the bushing 22 can rotate relative to the fixed shaft 2. A through hole 3 is radially formed in the bushing 22, and a groove 4 is radially formed in the fixed shaft 2. The position of the through hole 3 corresponds to the position of the groove 4. A connecting protrusion 5 is inserted and connected in the through hole 3 and the groove 4. When the user needs the fixed shaft 2 and the swing seat 1 to be in a relatively static state, the user inserts and connects the connecting protrusion 5 into the through hole 3 of the swing seat 1 and the groove 4 of the fixed shaft 2, so that the swing seat 1 and the fixed shaft 2 are synchronously restricted in the radial direction by the connecting protrusion 5, thereby preventing the relative rotation between the swing seat 1 and the fixed shaft 2. Thus, the rotational clearance is eliminated, and the relative static state between the fixed shaft 2 and the swing seat 1 is ensured.
[0031] The first connecting seat 9 is located on one side of the upper side of the bushing 22. The first connecting seat 9 includes a first connecting ear 10, a second connecting ear 11, and a first connecting shaft 12. The first connecting ear 10 and the second connecting ear 11 are integrally and parallelly connected to one side of the upper side of the bushing 22. The first connecting shaft 12 is arranged parallel to the upper side of the bushing 22. One end of the first connecting shaft 12 is connected to the first connecting ear 10, and the other end is connected to the second connecting ear 11. After the structure for preventing the rotation of the fixed shaft 2 of the anti-swing seat 1 is installed at the installation position, the swing seat 1 and the fixed shaft 2 can rotate relative to each other, and the first connecting seat 9 on the swing seat 1 can be used for hinging with other mechanical structures such as a robotic arm.
[0032] Further, in this embodiment, a swing seat groove 8 is formed near the through hole 3 of the bushing 22. The swing seat groove 8 is formed with the fixed shaft 2 as the center. The swing seat groove 8 is in a semi-circular shape. The swing seat groove 8 makes the wall thickness of the bushing 22 near the groove 4 of the fixed shaft 2 uniform and thinner, so that the hole length of the through hole 3 is shorter. Then, only a shorter connecting protrusion 5 is required for the insertion connection between the through hole 3 and the groove 4, making the swing seat 1 at the connection position with the fixed shaft 2 thinner and lighter, facilitating the simultaneous connection of the connecting protrusion 5 with the swing seat 1 and the fixed shaft 2. And because the connection position of the swing seat 1 is thinner and lighter, the length of the connecting protrusion 5 is also shorter. Then, the shear force of the connecting protrusion 5 when connecting the fixed shaft 2 and the swing seat 1 is lower, and the bearing capacity of the connecting protrusion 5 is stronger.
[0033] Further, in this embodiment, a sealing plate 6 is screwed to the bushing 22 near the through hole 3, so that the sealing plate 6 covers the connecting protrusion 5. Since the connecting protrusion 5 has been radially inserted to define the swing seat 1 and the fixed shaft 2, covering the connecting protrusion 5 with the sealing plate 6 is beneficial to fixing the position of the connecting protrusion 5 on the swing seat 1 and the fixed shaft 2, and preventing the connecting protrusion 5 from falling off the swing seat 1 and the fixed shaft 2.
[0034] Further, in this embodiment, a sealing plate groove 7 is provided at the bushing 22 near the through hole 3. The sealing plate 6 is located in the sealing plate groove 7, and the sealing plate 6 is screwed to the bushing 22 near the through hole 3, so that the sealing plate 6 covers the connecting protrusion 5 in the sealing plate groove 7. By providing the sealing plate groove 7, the position of the sealing plate 6 is defined, thereby ensuring the stability of the sealing plate 6 in defining the connecting protrusion 5.
[0035] Further, in this embodiment, the swing seat 1 includes a second connecting seat 13. The second connecting seat 13 is located on the outer side wall of the bushing 22. The second connecting seat 13 includes a third connecting ear 14, a fourth connecting ear 15 and a second connecting shaft 16. Both the third connecting ear 14 and the fourth connecting ear 15 are integrally connected to the outer side wall of the bushing 22, and the third connecting ear 14 and the fourth connecting ear 15 are arranged in parallel. One end of the second connecting shaft 16 is connected to the third connecting ear 14, and the other end is connected to the fourth connecting ear 15. When the user hinges the first connecting seat 9 with a mechanical structure such as a robotic arm, the second connecting seat 13 can be used to connect an oil cylinder, thereby realizing the rotational control of mechanical structures such as the robotic arm, and the second connecting seat 13 can also be used to connect other mechanical structures.
[0036] Further, in this embodiment, the third connecting ear 14 and the fourth connecting ear 15 have a certain angle, which is convenient for the connection between the second connecting seat 13 and the oil cylinder.
[0037] Further, in this embodiment, the swing seat 1 includes a third connecting seat 17. The third connecting seat 17 includes a first connecting plate 18, a second connecting plate 19 and a third connecting shaft 20. The first connecting plate 18 and the second connecting plate 19 are arranged in parallel. One end of the third connecting shaft 20 is connected to the first connecting plate 18, and the other end is connected to the second connecting plate 19. A support plate 21 is provided between the first connecting plate 18 and the second connecting plate 19. By means of the first connecting plate 18 and the second connecting plate 19, the third connecting shaft 20 is at a certain distance from the bushing 22, thereby facilitating the setting of a swing oil cylinder between the swing seat 1 and its installation position, so as to facilitate the control of the swing of the swing seat 1.
[0038] Further, in this embodiment, the opening directions of the through hole 3 and the groove 4 can also be inclined, as long as the relative rotation between the swing seat 1 and the fixed shaft 2 can be defined.
[0039] Further, a reinforcing plate is provided between the connecting ear, the connecting plate and the bushing 22. The reinforcing plate is used to reinforce the supporting capacity of the connecting ear and the connecting plate, and reduce the probability of deformation of the connecting ear and the connecting plate under stress.
[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.
Claims
1. A structure for preventing a swing seat from rotating a fixed shaft, comprising a swing seat (1) and a fixed shaft (2), wherein the swing seat (1) is connected to the fixed shaft (2), and characterized in that: The swing seat (1) is provided with a through hole (3), the fixed shaft (2) is provided with a groove (4), and a connecting protrusion (5) is provided between the through hole (3) of the swing seat (1) and the groove (4) of the fixed shaft (2).
2. The structure for fixing the rotation of the anti-sway seat according to claim 1, characterized in that: The swing seat (1) is provided with a sealing plate (6), and the sealing plate (6) is arranged to cover the connecting protrusion (5).
3. The structure for fixing the rotation of the anti-sway seat according to claim 1, characterized in that: The swing seat (1) is provided with a sealing plate groove (7), the sealing plate groove (7) is provided with a sealing plate (6), and the sealing plate (6) covers the connecting protrusion (5).
4. The structure for fixing the rotation of the anti-sway seat according to claim 1, characterized in that: The swing seat (1) is provided with a swing seat groove (8) near the through hole (3), and the swing seat groove (8) facilitates the connection protrusion (5) to cooperate with the through hole (3).
5. The structure for fixing the rotation of the anti-sway seat according to claim 1, characterized in that: The swing seat (1) comprises a first connecting seat (9), the first connecting seat (9) comprises a first connecting ear (10), a second connecting ear (11) and a first connecting shaft (12), the first connecting ear (10) and the second connecting ear (11) are arranged in parallel, and one end of the first connecting shaft (12) is connected to the first connecting ear (10), and the other end is connected to the second connecting ear (11).
6. The structure for fixing the rotation of the anti-sway seat according to claim 1, characterized in that: The swing seat (1) comprises a second connecting seat (13), the second connecting seat (13) comprises a third connecting ear (14), a fourth connecting ear (15) and a second connecting shaft (16), the third connecting ear (14) and the fourth connecting ear (15) are arranged in parallel, and one end of the second connecting shaft (16) is connected to the third connecting ear (14), and the other end is connected to the fourth connecting ear (15).
7. The structure for fixing the rotation of the anti-swing seat according to claim 6, characterized in that: The third connecting ear (14) and the fourth connecting ear (15) have an angle.
8. The structure for fixing the rotation of the anti-sway seat according to claim 1, characterized in that: The swing seat (1) comprises a third connecting seat (17), and the third connecting seat (17) comprises a first connecting plate (18), a second connecting plate (19) and a third connecting shaft (20), wherein the first connecting plate (18) and the second connecting plate (19) are arranged in parallel, and one end of the third connecting shaft (20) is connected to the first connecting plate (18), and the other end is connected to the second connecting plate (19).
9. The structure for fixing the rotation of the anti-sway seat according to claim 8, characterized in that: A support plate (21) is provided between the first connecting plate (18) and the second connecting plate (19).