Shifting wheel handle locking device
By setting a movable cover plate and sliding bracket on the excavator hydraulic handle, and using the slider and push rod to drive the insertion tab to insert the limit tab, the problem of unstable locking of the plunger at the designated position is solved, and the hand lock can be achieved, reducing the hand load and improving the stability of the locked state.
Patent Information
- Application Number
- CN202422440083.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-10-10
AI Technical Summary
The dial wheels on the hydraulic handle of the existing excavator are unstable in the designated position, and the operator's hand load is large, so it is impossible to achieve hand-locking.
A tray handle locking device is designed. By setting a movable cover plate and a sliding bracket on the hydraulic handle, the slider and push rod drive the insert to insert the limit plate to achieve the hand-locking of the tray, reducing the hand load and maintaining stability.
The stable locking of the tray in the designated position is achieved, reducing the hand load of the operator and improving the stability of the locked state.
Smart Images
Figure CN223214640U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of excavator accessories, in particular to a thumbwheel handle locking device. Background Art
[0002] There are many types of hydraulic handles for excavators. One type of hydraulic handle is equipped with an electronically controlled dial for controlling and adjusting the operation of accessories. When the excavator is equipped with different accessories, the dial handle needs to be locked in a specified position and not return to the center position and maintained to control the continuous operation of the accessories. When the accessories are not in use or switched, the dial will return to the center position from the previous position. The ordinary handle uses the operator's fingers to continuously fix the dial position to maintain the locked position. The operator's hands are heavily loaded and unstable, making it impossible to lock the dial in the specified position.
[0003] Therefore, the problem that the inventor wanted to solve was to design a device that can lock the dial at a specified position without the hands, reduce the load on the hands, and maintain a stable locking state. Utility Model Content
[0004] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a thumbwheel handle locking device that can lock the thumbwheel at a specified position without the hand, thereby reducing the hand load and maintaining a stable locking state.
[0005] The technical solution adopted by the device of the present utility model is: a thumbwheel handle locking device is arranged on the hydraulic handle, a movable cover plate is provided on the end surface of the hydraulic handle, a movable groove is provided on the movable cover plate, a thumbwheel is provided on the inner side of the movable groove, the thumbwheel and the internal frame of the hydraulic handle are slidably arranged, a limit block is connected at the lower end edge of the thumbwheel, an adjustment groove is provided in the middle of the movable cover plate, a sliding bracket is provided below the adjustment groove and on the inner side wall of the movable cover plate, a bottom plate is slidably provided on the inner side of the sliding bracket, a slider is connected to the upper end of the bottom plate, an insert is provided on the end of the slider, the insert is plugged into and matched with the limit block, a socket is provided in the middle of the slider, a push rod is plugged into the inner side of the socket, and an anti-slip cap is connected to the end of the push rod.
[0006] Furthermore, the limiting block is provided with limiting pieces that are evenly distributed at equal intervals, and limiting grooves are formed between adjacent limiting pieces.
[0007] Furthermore, a guide section is provided at the end of the limiting piece, and the cross section of the end of the guide section is a trapezoidal structure.
[0008] Furthermore, a sliding groove is provided at the bottom of both side walls of the sliding bracket, and an inclined guide surface is provided between the sliding groove and the end surface of the side wall.
[0009] Furthermore, a bottom plate is slidably provided inside the slide groove.
[0010] Furthermore, the bottom plate does not contact the limiting piece when the limiting piece and the inserting piece are plugged into each other.
[0011] Furthermore, a first positioning hole and a second positioning hole are provided on the bottom side wall of the sliding bracket. When the end of the push rod is plugged into the first positioning hole, the tail of the slider contacts the end side wall of the sliding bracket. When the end of the push rod is plugged into the second positioning hole, the insert and the limit plate are in a plug-in fit state.
[0012] Furthermore, an installation groove is provided on the outer end surface of the push rod, and a silicone sleeve is provided on the inner side of the installation groove.
[0013] The beneficial effects of the utility model device are:
[0014] 1. The utility model is provided with a manually slidable slider on the inner side of the hydraulic handle. When needed, the push rod is pushed to drive the insert piece to insert into the limit piece provided on the dial wheel to prevent the dial wheel from returning to its original position. The dial wheel can be locked at a specified position without hands, reducing the hand load and maintaining a stable locking state. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a structural view of the utility model.
[0016] Figure 2 This is a view of the internal structure of the utility model.
[0017] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.
[0018] Figure 4 This is a structural view of the sliding bracket of the utility model.
[0019] Explanation of the accompanying reference numerals: 1-hydraulic handle; 2-dial wheel; 3-limiting block; 4-limiting plate; 5-sliding bracket; 6-base plate; 7-slider; 8-push rod; 9-guide section; 10-anti-slip cap; 11-second positioning hole; 12-first positioning hole; 13-silicone sleeve; 14-jack; 15-slide groove; 16-inclined guide surface; 17-movable cover plate; 18-adjustment groove. DETAILED DESCRIPTION
[0020] The present invention will be further described below with reference to specific embodiments. These embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. It should also be understood that after reading the teachings of the present invention, those skilled in the art may make various changes or modifications to the present invention, and that these equivalent forms also fall within the scope defined by the appended claims.
[0021] Example 1: See Figures 1 to 4 This is the structure view, internal structure view, Figure 2 A partial enlarged view at point A in the middle, a structural view of the sliding bracket 5, a thumbwheel 2 handle locking device is arranged on the hydraulic handle 1, a movable cover plate 17 is provided on the end face of the hydraulic handle 1, a movable groove is provided on the movable cover plate 17, a thumbwheel 2 is provided on the inner side of the movable groove, the hydraulic flow required by the excavator attachment is adjusted by adjusting the position of the thumbwheel 2, the thumbwheel 2 is slidably arranged with the internal frame of the hydraulic handle 1, the lower end edge of the thumbwheel 2 is connected to the limiting block 3, the limiting block 3 is provided with limiting pieces 4 uniformly distributed at equal intervals, and limiting grooves are formed between adjacent limiting pieces 4, and a guide section 9 is provided at the end of the limiting piece 4, the end cross section of the guide section 9 is a trapezoidal structure, and the guide section 9 is used to guide the possible collision movement between the insert and the limiting piece 4, so that the insert is easier to insert into the limiting groove, and the thumbwheel 2 can be locked by inserting the insert into the limiting groove.
[0022] An adjustment slot 18 is provided in the middle of the movable cover 17, and a sliding bracket 5 is provided below the adjustment slot 18 and on the inner side wall of the movable cover 17. A slide slot 15 is provided at the bottom of the side walls on both sides of the sliding bracket 5. An inclined guide surface 16 is provided between the slide slot 15 and the end surface of the side wall. A bottom plate 6 is provided on the inner side of the sliding bracket 5 for sliding. The bottom plate 6 is slidably provided on the inner side of the slide slot 15. The upper end of the bottom plate 6 is connected to the slider 7. The end of the slider 7 is provided with an insert, which is plugged into the limit block 3. The middle of the slider 7 A socket 14 is provided on the top, and a push rod 8 is inserted into the inner side of the socket 14. The end of the push rod 8 is connected to the anti-slip cap 10. The bottom plate 6 does not contact the limiting piece 4 when the limiting piece 4 is plugged into the plug. The limiting block 3 and the limiting piece 4 move with the movement of the dial wheel 2. When the dial wheel 2 moves to the position where it needs to hover, the push rod 8 and the anti-slip cap 10 are manually pushed upward to drive the slider 7 and the plug connected to the push rod 8 to move upward and insert the plug into the limiting groove relative to the position to lock the dial wheel 2.
[0023] In order to assist in locking the position of the dial wheel 2, a structure for locking the position of the slider 7 is further provided. A first positioning hole 12 and a second positioning hole 11 are provided on the bottom side wall of the sliding bracket 5. When the end of the push rod 8 is plugged into the first positioning hole 12, the tail of the slider 7 contacts the end side wall of the sliding bracket 5. When the end of the push rod 8 is plugged into the second positioning hole 11, the insert and the limit plate 4 are in a plug-in fit state.
[0024] The push rod 8 is plug-in-fitted to the first positioning hole 12 and the second positioning hole 11. If you want to change the position of the slider 7, you need to pull out the push rod 8 to disengage the push rod 8 from the sliding bracket 5. In order to reduce the probability of the push rod 8 disengaging from the slider 7 during the insertion and removal process, a mounting groove is provided on the outer end face of the push rod 8, and a silicone sleeve 13 is provided on the inner side of the mounting groove. The friction between the silicone sleeve 13 and the inner wall of the socket 14 on the slider 7 during the insertion and removal of the push rod 8 serves as a damping force, making the process of pulling out the push rod 8 more controllable.
[0025] The utility model provides a manually slidable slider 7 on the inner side of the hydraulic handle 1. When needed, the push rod 8 is pushed to drive the insert piece to insert into the limit piece 4 provided on the dial wheel 2, preventing the dial wheel 2 from returning to its original position, thereby realizing the function of locking the dial wheel 2 at a specified position without the hand, reducing the hand load and maintaining a stable locking state.
Claims
1. A thumbwheel handle locking device, provided on a hydraulic handle (1), wherein a movable cover plate (17) is provided on the end surface of the hydraulic handle (1), a movable groove is provided on the movable cover plate (17), a thumbwheel (2) is provided inside the movable groove, and the thumbwheel (2) is slidably arranged with the internal frame of the hydraulic handle (1), characterized in that: The lower edge of the thumbwheel (2) is connected to a limit block (3), an adjustment slot (18) is provided in the middle of the movable cover (17), a sliding bracket (5) is provided below the adjustment slot (18) and on the inner wall of the movable cover (17), a bottom plate (6) is provided on the inner side of the sliding bracket (5), a slider (7) is connected to the upper end of the bottom plate (6), an insert is provided at the end of the slider (7), the insert is plugged into the limit block (3), a socket (14) is provided in the middle of the slider (7), a push rod (8) is plugged into the inner side of the socket (14), and an anti-slip cap (10) is connected to the end of the push rod (8).
2. The thumbwheel handle locking device according to claim 1, characterized in that: The limiting block (3) is provided with limiting pieces (4) that are evenly distributed at equal intervals, and limiting grooves are formed between adjacent limiting pieces (4).
3. The thumbwheel handle locking device according to claim 2, characterized in that: A guide section (9) is provided at the end of the limiting piece (4), and the cross section of the end of the guide section (9) is a trapezoidal structure.
4. The thumbwheel handle locking device according to claim 1, characterized in that: The bottoms of both side walls of the sliding bracket (5) are provided with sliding grooves (15), and an inclined guide surface (16) is provided between the sliding grooves (15) and the end surfaces of the side walls.
5. The thumbwheel handle locking device according to claim 4, characterized in that: A bottom plate (6) is slidably provided inside the sliding groove (15).
6. The thumbwheel handle locking device according to claim 5, characterized in that: The bottom plate (6) does not contact the limiting piece (4) when the limiting piece (4) is plugged into the inserting piece.
7. The thumbwheel handle locking device according to claim 1, characterized in that: A first positioning hole (12) and a second positioning hole (11) are provided on the bottom side wall of the sliding bracket (5). When the end of the push rod (8) is plugged into the first positioning hole (12), the tail of the slider (7) contacts the end side wall of the sliding bracket (5). When the end of the push rod (8) is plugged into the second positioning hole (11), the insert and the limit plate (4) are in a plugged-in state.
8. The thumbwheel handle locking device according to claim 1, characterized in that: An installation groove is provided on the outer end surface of the push rod (8), and a silicone sleeve (13) is provided inside the installation groove.