Quick-changing device for miniature loader

Abstract

The utility model discloses a quick-changing device for a miniature loader, which comprises swing arm fixing frames, a plurality of rotating shafts, a plurality of rotating shafts, a plurality of rotating shafts, a plurality of rotating shafts, a plurality of rotating shafts and a plurality of rotating shafts, and is characterized in that the swing arm fixing frames are vertically and symmetrically arranged; the fixing plate sets are symmetrically arranged on the two sides of the swing arm fixing frame, and a plurality of through holes corresponding to the swing arm fixing frame in position are also formed in the fixing plate sets; the first supporting steel pipe is horizontally inserted and mounted on the swing arm fixing frame and the fixing plate group; the second supporting steel pipe is parallel to the first supporting steel pipe and is horizontally inserted and mounted on the swing arm fixing frame and the fixing plate group; and the third supporting steel pipe is parallel to the first supporting steel pipe and the second supporting steel pipe and is horizontally inserted and mounted on the swing arm fixing frame and the fixing plate group. The positioning device has the beneficial effects that the shifting bolt type positioning structure is adopted, the guide ring is combined for use, the operation accessory can be accurately hung, meanwhile, rapid positioning can be achieved, the positioning precision is improved, the disassembly and assembly difficulty of the operation accessory is remarkably reduced, and the positioning device is suitable for rapid installation.

Description

Technical Field

[0001] The utility model relates to the technical field of miniature loaders, in particular to a quick-change device for miniature loaders. Background Art

[0002] At present, mini loaders play an important role in small-scale engineering operations. However, when replacing operating accessories of existing mini loaders, the disassembly and installation process is cumbersome and inefficient.

[0003] Since the mini loader is small in size and uses a hydraulic cylinder to control the locking bolt for fixation, its internal space is limited, which often causes inconvenience in the installation of working accessories. The most obvious problem is that the oil pipes interfere seriously, are prone to failure, and are costly. Another problem is that the equipment structure design is unreasonable, and combined with the material conditions, it is easy to deform. It cannot meet the current use needs. Utility Model Content

[0004] The purpose of the present utility model is to provide a quick-change device for a micro loader in order to solve the above problems, so as to solve the technical problem that the quick-change device of the micro loader in the prior art uses an oil cylinder for locking and fixing. Due to the small size of the carrier, the internal oil pipes often interfere with each other, which is easy to cause failures during replacement, and the disassembly and assembly efficiency is low, which cannot meet the current use requirements. Among the many technical solutions provided by the present utility model, the preferred technical solution adopts a toggle bolt-type positioning structure, which is used in combination with a guide ring, and can accurately hang the work accessories, and can also achieve rapid positioning, thereby improving the positioning accuracy, significantly reducing the difficulty of disassembly and assembly of the work accessories, and is suitable for the technical effect of rapid installation, as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a quick-change device for a mini loader, comprising:

[0007] The swing arm fixing frame is vertically symmetrically arranged, and the swing arm fixing frame is provided with a plurality of through holes for matching installation;

[0008] The fixing plate group is symmetrically arranged on both sides of the swing arm fixing frame, and the fixing plate group is also provided with a plurality of through holes corresponding to the positions of the swing arm fixing frame;

[0009] The first supporting steel pipe is horizontally plugged and installed on the swing arm fixing frame and the fixing plate assembly;

[0010] The second supporting steel pipe is arranged in parallel with the first supporting steel pipe and is horizontally plugged and installed on the swing arm fixing frame and the fixing plate assembly;

[0011] The third supporting steel pipe is arranged in parallel with the first supporting steel pipe and the second supporting steel pipe, and is horizontally plugged and installed on the swing arm fixing frame and the fixing plate assembly;

[0012] A limiting groove is provided on the outer wall of the third supporting steel tube, a movable fixing bolt is provided inside the third supporting steel tube, and a spring is provided inside the third supporting steel tube to push the movable fixing bolt to move;

[0013] A toggle bolt is arranged on the outer wall of the movable fixing bolt and is used to move in the limiting groove;

[0014] The locking hole is arranged on the fixing plate assembly and corresponds to the position of the movable fixing bolt.

[0015] Preferably, sealing covers are provided at both ends of the second supporting steel pipe.

[0016] Preferably, there are two fixing plate groups, each group includes two fixing plates, and a gap is reserved between the two fixing plates, and a guide ring is provided in the gap at a position corresponding to the position of the first supporting steel pipe.

[0017] Preferably, a bending plate is provided below the second supporting steel pipe, and the bending plate is an L-shaped structure.

[0018] Preferably, a positioning slot for positioning the bending plate is provided on the side wall of the swing arm fixing frame.

[0019] Preferably, a screw fixed on the bending plate is provided on the outer wall of the third supporting steel pipe.

[0020] The beneficial effects are:

[0021] The use of a toggle bolt-type positioning structure combined with a guide ring can accurately hang the work accessories and achieve rapid positioning, thereby improving the positioning accuracy and significantly reducing the difficulty of disassembly and assembly of the work accessories, making it suitable for rapid installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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 of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 The three-dimensional structure of the utility model Figure 1 ;

[0024] Figure 2 The three-dimensional structure of the utility model Figure 2 ;

[0025] Figure 3 The three-dimensional structure of the utility model Figure 3 ;

[0026] Figure 4 The three-dimensional structure of the utility model Figure 4 .

[0027] The following are the descriptions of the reference numerals:

[0028] 1. Limiting groove; 2. Swing arm fixing frame; 3. First supporting steel pipe; 4. Second supporting steel pipe; 5. Guide ring; 6. Sealing cover; 7. Locking hole; 8. Fixing plate; 9. Movable fixing bolt; 10. Toggle bolt; 11. Third supporting pipe; 12. Screw; 13. Bending plate; 14. Positioning slot. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0030] See also Figure 1-Figure 4 As shown, the utility model provides a quick-change device for a mini loader, comprising:

[0031] The swing arm fixing frame 2 is vertically symmetrically arranged, and a plurality of through holes for matching installation are arranged on the swing arm fixing frame 2. From top to bottom, the first supporting steel pipe 3, the second supporting steel pipe 4 and the third supporting steel pipe are sequentially arranged. The swing arm fixing frame 2 is also provided with a through hole for matching with the micro loader hanging structure for fixed connection. When in use, each supporting steel pipe can be inserted into the corresponding through hole for positioning. A gap is reserved in the middle of the swing arm fixing frame 2, which can be matched with the subsequent supporting steel pipe for installation and fixing, so as to ensure the connection stability between the swing arm fixing frame 2 and the supporting steel pipe and improve the overall strength of the bracket;

[0032] The fixing plates 8 are symmetrically arranged on both sides of the swing arm fixing frame 2. The fixing plates 8 are also provided with a plurality of through holes corresponding to the positions of the swing arm fixing frame 2. The fixing plates 8 are symmetrically arranged with the swing arm fixing frame 2 and are respectively located at the ends of each supporting steel pipe, forming a whole with the swing arm fixing frame 2 for support, thereby ensuring stability during the support process;

[0033] The first supporting steel pipe 3 is horizontally plugged and installed on the swing arm fixing frame 2 and the fixing plate 8 group;

[0034] The second supporting steel pipe 4 is arranged in parallel with the first supporting steel pipe 3 and is horizontally plugged and installed on the swing arm fixing frame 2 and the fixing plate 8 group;

[0035] The third supporting steel pipe is arranged in parallel with the first supporting steel pipe 3 and the second supporting steel pipe 4, and is horizontally plugged and installed on the swing arm fixing frame 2 and the fixing plate 8 group;

[0036] The limiting groove 1 is provided on the outer wall of the third supporting steel pipe, wherein the limiting groove 1 is an L-shaped structure, which can facilitate the movable fixing bolt 9 to slide along the limiting groove 1. When the movable fixing bolt 9 reaches the end of the limiting groove 1, it can move in another direction to achieve limiting. The third supporting steel pipe is provided with a movable fixing bolt 9 inside. The third supporting steel pipe is provided with a spring to push the movable fixing bolt 9 to move. During the movement of the movable fixing bolt 9, the spring can push the movable fixing bolt 9 to move inside the third supporting pipe 11 toward the fixing plate 8, thereby ensuring that the end of the movable bolt is always located in the locking hole 7 of the fixing plate 8 for fixing, thereby ensuring the stability of the working attachment;

[0037] The toggle bolt 10 is arranged on the outer wall of the movable fixing bolt 9 and is used to move in the limiting groove 1. The toggle bolt 10 can facilitate the adjustment of the movement of the movable fixing bolt 9 inside the third supporting steel pipe, thereby adjusting the relative position of the movable fixing bolt 9 and the locking hole 7 on the fixing plate 8, and the movable fixing bolt 9 passes through the positioning hole on the working attachment to fix the working attachment;

[0038] The locking hole 7 is provided on the fixing plate 8 group, and corresponds to the position of the movable fixing bolt 9. By adjusting the relative position of the movable fixing bolt 9 inside the third supporting steel pipe, the end of the movable fixing bolt 9 can be controlled to move inside the locking hole 7, thereby achieving positioning;

[0039] During assembly, the operator sequentially inserts the first support steel tube 3, the second support steel tube 4 and the third support steel tube into the through holes on the swing arm fixing frame 2 for installation, and then puts the movable fixing bolt 9 in combination with the spring into the third support steel tube, and installs the toggle bolt 10 onto the movable fixing bolt 9, and places the guide ring 5 in the fixing plate 8 group for positioning, and finally symmetrically installs the fixing plate 8 group at the ends of each support steel tube for fixing, thereby realizing the assembly of the quick-change device;

[0040] When in use, fix the quick-change device on the lifting arm of the micro loader, and then adjust the lifting arm to be close to the work attachment to be installed, and push the hook on the work attachment to be fixed on the guide ring 5, and then align the through hole on the work attachment with the locking hole 7. At this time, the spring inside the third supporting steel pipe pushes the movable fixing bolt 9 to move, so that it passes through the locking hole 7 on the fixing plate 8 and the through hole on the work attachment to achieve connection and fixation, thereby completing the rapid installation of the work attachment. When the work is completed and needs to be disassembled, the operator pulls the toggle bolt 10 to slide inside the limit slot 1 and locks it at the end, so that the movable fixing bolt 9 passes through the inside of the fixing plate 8, and the connection to the work data is released. At this time, the disassembly of the work attachment is completed.

[0041] In another embodiment, sealing covers 6 are respectively provided at both ends of the second supporting steel tube 4. Since the size of the sealing covers 6 is larger than the size of the openings on the fixing plate 8 group, the sealing covers 6 can cooperate to buckle and fix the second supporting tube, thereby limiting the fixing plate 8 group through the sealing covers 6 to prevent the fixing plate 8 group from falling off the second supporting tube.

[0042] In another embodiment, there are two groups of fixed plates 8, each group includes two fixed plates 8, and a gap is reserved between the two fixed plates 8. A guide ring 5 is provided in the gap at a position corresponding to the position of the first supporting steel pipe 3. The guide ring 5 is tightly attached to both sides of the fixed plate 8 and is mounted on the outer side of the first supporting steel pipe 3, which can be convenient for.

[0043] In another embodiment, a bending plate 13 is provided under the second support tube. The bending plate 13 is an L-shaped structure. The bending plate 13 is arranged at the bottom of the swing arm fixing frame 2, and both ends of the bending plate 13 abut against the side walls of the fixing plate 8. It can cooperate with each supporting steel pipe to form a frame structure between the fixing plate 8 and the swing arm fixing frame 2, thereby improving the overall strength of the quick-change device.

[0044] In another embodiment, a positioning slot 14 for positioning the bending plate 13 is provided on the side wall of the swing arm fixing frame 2. The structural design of the slot can reduce the difficulty of installing the bending plate 13. When in use, the bending plate 13 is directly attached to the positioning slot 14 to achieve quick positioning and improve positioning efficiency.

[0045] In another embodiment, a screw 12 fixed on the bending plate 13 is provided on the outer wall of the third supporting steel pipe, and a threaded hole matching with the screw 12 is opened on the third steel pipe. When in use, the bending plate 13 can be fixed through the third supporting steel pipe to achieve a stable connection.

[0046] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A quick-change device for a micro loader, characterized in that: include: The swing arm fixing frame (2) is vertically symmetrically arranged, and the swing arm fixing frame (2) is provided with a plurality of through holes for matching installation; A fixing plate group is symmetrically arranged on both sides of the swing arm fixing frame (2), and the fixing plate group is also provided with a plurality of through holes corresponding to the positions of the swing arm fixing frame (2); The first supporting steel pipe (3) is horizontally plugged and installed on the swing arm fixing frame (2) and the fixing plate assembly; The second supporting steel pipe (4) is arranged in parallel with the first supporting steel pipe (3) and is horizontally plugged and installed on the swing arm fixing frame (2) and the fixing plate assembly; The third supporting steel pipe (11) is arranged in parallel with the first supporting steel pipe (3) and the second supporting steel pipe (4), and is horizontally plugged and installed on the swing arm fixing frame (2) and the fixing plate assembly; A limiting groove (1) is provided on the outer wall of the third supporting steel tube (11), a movable fixing bolt (9) is provided inside the third supporting steel tube (11), and a spring for pushing the movable fixing bolt (9) to move is provided inside the third supporting steel tube (11); A toggle bolt (10) is arranged on the outer wall of the movable fixing bolt (9) and is used to move in the limiting groove (1); The locking hole (7) is formed on the fixing plate assembly and corresponds to the position of the movable fixing bolt (9).

2. The quick-change device for a micro loader according to claim 1, characterized in that: Sealing covers (6) are respectively provided at both ends of the second supporting steel pipe (4).

3. The quick-change device for a micro loader according to claim 1, characterized in that: There are two fixed plate groups, each group contains two fixed plates (8), and a gap is reserved between the two fixed plates (8). A guide ring (5) is provided in the gap at a position corresponding to the position of the first supporting steel pipe (3).

4. The quick-change device for a micro loader according to claim 1, characterized in that: A bending plate (13) is provided below the second supporting steel pipe, and the bending plate (13) is an L-shaped structure.

5. The quick-change device for a micro loader according to claim 1, characterized in that: A positioning slot (14) for positioning the bending plate (13) is provided on the side wall of the swing arm fixing frame (2).

6. The quick-change device for a micro loader according to claim 1, characterized in that: A screw rod (12) fixed on the bending plate (13) is provided on the outer wall of the third supporting steel pipe.

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