A loader implement quick change device and a loader

Abstract

The application discloses a loader accessory quick-change device and a loader, and relates to the technical field of loaders, and comprises a quick-change frame, a hook pin shaft, a telescopic pin shaft, a limiting block and a hydraulic oil cylinder. The hook pin shaft hole on the upper cross beam and the telescopic pin shaft hole on the telescopic pin shaft seat are both made by boring process after welding, the hook pin shaft and the telescopic pin shaft are respectively installed in the hook pin shaft hole and the telescopic pin shaft hole, the limiting block mounting seat is welded on the outside of the outer vertical plate, and the limiting block is installed on the limiting block mounting seat. By making the hook pin shaft hole on the upper cross beam and the telescopic pin shaft hole on the telescopic pin shaft seat by boring process after welding, the coaxiality of the hook pin shaft and the telescopic pin shaft on both sides of the quick-change device and the parallelism of the hook pin shaft and the telescopic pin shaft can be effectively ensured; the limiting block mounting seat is arranged on the quick-change device, and the limiting block can be directly installed on the limiting block mounting seat, so that convenience is brought to users, and the use difficulty and cost of the users are obviously reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of loaders, in particular to a loader accessory quick-change device and a loader. BACKGROUND

[0002] Most of the conventional loader buckets or other accessories are directly hinged with the main machine through a pin shaft. However, with the development of the market, the types of accessories that can be configured on the loader are increasing, and the replacement of different accessories promotes the increasing demand for accessory quick-change devices in the market. Therefore, the loader accessory quick-change device is introduced to facilitate the disassembly and replacement of different accessories.

[0003] However, the existing loader accessory quick-change device still has the following problems: 1. The hook pin shafts of the quick-change device are all welded on the main body structure. Due to welding deformation, the coaxiality of the left and right hook pin shafts and the parallelism of the hook pin shafts and the telescopic pin shafts cannot be guaranteed, and thus the quick-change device cannot be used; 2. The limit blocks of the accessory and the quick-change device are all welded on the accessory. When a user purchases a new accessory, the limit block needs to be welded on the accessory before it can be used, which is inconvenient for the user; when a user purchases a second-hand accessory, the limit block cannot be directly installed and used due to different welding positions of the limit block; 3. When installing the accessory, the driver cannot directly confirm whether the telescopic pin shaft is completely inserted into the telescopic pin shaft hole of the accessory in the cab, which is inconvenient for the user and may even cause safety problems due to misoperation; 4. When the oil supply pipeline of the hydraulic cylinder is damaged, the telescopic pin shaft will lose the control power and become uncontrollable. During the use of the accessory, the telescopic pin shaft may exit the telescopic pin shaft hole of the accessory, which poses a safety hazard. SUMMARY

[0004] Therefore, the present application provides a loader accessory quick-change device which can guarantee the coaxiality of the left and right hook pin shafts and the telescopic pin shafts and improve the convenience and safety of the quick-change device.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A loader accessory quick-change device, comprising a quick-change frame, a hook pin shaft, a telescopic pin shaft, a limit block, and a hydraulic cylinder.

[0007] The quick-change frame is welded from an outer stand plate, an indicator plate guard, an inner stand plate, a rib plate, a bent plate, an upper cross beam, a telescopic pin shaft seat, and a limit block mounting seat. The hook pin shaft hole on the upper cross beam and the telescopic pin shaft hole on the telescopic pin shaft seat are both made by boring after welding. The hook pin shaft and the telescopic pin shaft are respectively installed in the hook pin shaft hole and the telescopic pin shaft hole. The hydraulic cylinder is installed on the inner side of the bent plate. The telescopic end and the fixed end of the hydraulic cylinder are respectively in transmission connection with the telescopic pin shafts on both sides. The limit block mounting seat is welded on the outer side of the outer stand plate, and the limit block is installed on the limit block mounting seat.

[0008] Preferably, the limiting block is cam-shaped, and mounting holes are arranged on the limiting block, and the limiting block is connected to the limiting block mounting seat by bolts, and a lock washer is arranged between the limiting block and the limiting block mounting seat.

[0009] Preferably, mounting holes are arranged on the telescopic end and the fixed end of the hydraulic cylinder, and a mounting hole is also arranged on one end of the telescopic pin shaft facing the hydraulic cylinder, and the telescopic end and the fixed end of the hydraulic cylinder are respectively inserted into the two telescopic pin shafts so that the mounting holes are opposite to each other, and the telescopic end and the fixed end of the hydraulic cylinder are respectively connected and fixed with the two telescopic pin shafts by cooperating with the mounting holes using bolts.

[0010] Preferably, the bent plate is C-shaped as a whole, and along the telescopic direction of the hydraulic cylinder, limit grooves are symmetrically arranged at both ends of the upper side plate of the bent plate, and the loader implement quick-change device further comprises positioning sleeves and indicating bent plates, two positioning sleeves are respectively arranged in the limit grooves at both ends of the bent plate, and two indicating bent plates are respectively arranged at the upper ends of the two positioning sleeves, mounting holes are arranged in the positioning sleeves and the lower ends of the indicating bent plates, and the bolts pass through the positioning sleeves and the indicating bent plates in sequence to fix the two groups of positioning sleeves and indicating bent plates at the telescopic end and the fixed end of the hydraulic cylinder.

[0011] Preferably, a spring is arranged in the hydraulic cylinder, a mounting groove is arranged on the bottom of the cylinder in the hydraulic cylinder, and a mounting shaft hole is arranged in the inside of the piston rod of the hydraulic cylinder, one end of the spring is mounted in the mounting groove, and the other end is inserted into the mounting shaft hole and abuts against the bottom of the mounting shaft hole.

[0012] Preferably, one end of the hook pin shaft is provided with a positioning hole, and the hook pin shaft is fixed on the upper cross beam through the positioning hole screw.

[0013] Preferably, a threaded hole is arranged on the end face of the end of the hook pin shaft away from the positioning hole, and the threaded hole is used to connect with external dismounting equipment so as to dismount the hook pin shaft.

[0014] A loader comprises the loader implement quick-change device according to any one of the preceding embodiments.

[0015] Compared with the prior art, the loader accessory quick change device disclosed by the application is characterized in that the hook pin shaft hole on the upper cross beam and the telescopic pin shaft hole on the telescopic pin shaft seat are both made by the boring process after welding, so that the coaxiality of the hook pin shaft and the telescopic pin shaft on both sides of the quick change device and the parallelism of the hook pin shaft and the telescopic pin shaft can be effectively ensured, the problem of difficulty in use or even the problem of inability to use of the quick change device is avoided, and in addition, the limit block mounting seat is arranged on the quick change device, and the limit block can be directly mounted on the limit block mounting seat, so that the user does not need to weld the limit block on the accessory by himself, which brings convenience to the user, and in addition, the user does not need to worry about the installation position of the limit block when purchasing a second-hand accessory, which significantly reduces the use difficulty and use cost of the user.

[0016] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following description and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the loader accessory quick change device disclosed in the embodiment of the application;

[0018] Figure 2 is a structural schematic view of the quick change frame of the loader accessory quick change device disclosed in the embodiment of the application;

[0019] Figure 3 is a structural schematic view of the hook pin shaft of the loader accessory quick change device disclosed in the embodiment of the application;

[0020] Figure 4 is a structural schematic view of the telescopic pin shaft of the loader accessory quick change device disclosed in the embodiment of the application;

[0021] Figure 5 is a side view of the limit block of the loader accessory quick change device disclosed in the embodiment of the application;

[0022] Figure 6 is a sectional view of the hydraulic oil cylinder of the loader accessory quick change device disclosed in the embodiment of the application;

[0023] Figure 7 is a structural schematic view of the positioning sleeve of the loader accessory quick change device disclosed in the embodiment of the application;

[0024] Figure 8 is a structural schematic view of the indicating bent plate of the loader accessory quick change device disclosed in the embodiment of the application;

[0025] Figure 9 is a structural schematic view of the upper cross beam of the loader accessory quick change device disclosed in the embodiment of the application;

[0026] Figure 10 is a structural schematic view of a bent plate of a loader accessory quick-change device disclosed in the embodiments of the present application.

[0027] Reference signs:

[0028] 1, quick-change frame; 11, outer stand plate; 12, indication plate guard; 13, inner stand plate; 14, rib plate; 15, bent plate; 16, upper cross beam; 17, telescopic pin shaft seat; 18, limit block mounting seat; 151, limit groove;

[0029] 2, hook pin shaft; 3, telescopic pin shaft; 4, limit block;

[0030] 5, hydraulic oil cylinder; 51, piston rod; 52, spring;

[0031] 6, positioning sleeve; 7, indication bent plate. DETAILED DESCRIPTION

[0032] The present application discloses a loader accessory quick-change device, which can ensure coaxiality of left and right hook pin shafts 2 and telescopic pin shafts 3, and improve use convenience and safety of the quick-change device.

[0033] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0034] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0035] The following Figures 1 to 10 The loader accessory quick-change device in the embodiments of the present application is described.

[0036] The present application discloses a loader accessory quick-change device, which comprises a quick-change frame 1, hook pin shafts 2, telescopic pin shafts 3, limit blocks 4 and a hydraulic oil cylinder 5.

[0037] The quick-change frame 1 is welded from an outer stand plate 11, an indication plate guard 12, an inner stand plate 13, a rib plate 14, a bent plate 15, an upper cross beam 16, a telescopic pin shaft seat 17 and a limit block mounting seat 18, for example Figure 1 and Figure 2As shown, the outer vertical plates 11 are provided with four, the inner vertical plates 13 are provided with two, in the same direction, the outer vertical plates 11 are symmetrically arranged in pairs, the outer vertical plates 11 in the same group are connected through the web plates 14, the two inner vertical plates 13 are symmetrically arranged in the middle of the two groups of outer vertical plates 11 and are arranged at intervals, the inner vertical plates 13 and the adjacent outer vertical plates 11 are connected through the indicating plate guard plates 12, coaxial mounting holes are formed in the upper ends of the outer vertical plates 11 and the inner vertical plates 13, the upper cross beams 16 are arranged in the mounting holes and are welded and fixed with the outer vertical plates 11 and the inner vertical plates 13; coaxial mounting holes are formed in the lower ends of the outer vertical plates 11 in the same group, the telescopic pin shaft seats 17 are arranged in the mounting holes and are welded and fixed with the outer vertical plates 11; the inner vertical plates 11 of the two groups of outer vertical plates 11 are connected through the bent plates 15, the lower ends of the inner vertical plates 13 are connected with the upper end faces of the bent plates 15; two limiting block mounting seats 18 are arranged on the outer side faces of the outer vertical plates 11 of the two groups of outer vertical plates 11.

[0038] Among them, the hook pin shaft hole on the upper cross beam 16 and the telescopic pin shaft hole on the telescopic pin shaft seat 17 are both made by boring process after welding, the hook pin shaft 2 and the telescopic pin shaft 3 are respectively arranged in the hook pin shaft hole and the telescopic pin shaft hole, the hydraulic oil cylinder 5 is arranged in the inner side of the bent plate 15, the telescopic ends and the fixed ends of the hydraulic oil cylinder 5 are respectively in transmission connection with the telescopic pin shafts 3 on both sides, the limiting block mounting seat 18 is welded on the outer side of the outer vertical plate 11, and the limiting block 4 is arranged on the limiting block mounting seat 18.

[0039] In the prior art, the hook pin shaft hole on the upper cross beam and the telescopic pin shaft hole on the telescopic pin shaft seat are generally opened before welding, when the quick-change device is completely welded, the upper cross beam and the telescopic pin shaft seat will be deformed due to high temperature caused by welding, therefore, the hook pin shaft hole on the upper cross beam and the telescopic pin shaft hole on the telescopic pin shaft seat will be deformed to a certain extent, which leads to that the coaxiality of the hook pin shaft and the telescopic pin shaft on both sides of the quick-change device and the parallelism of the hook pin shaft and the telescopic pin shaft cannot be well guaranteed, and further leads to that the quick-change device is difficult to use or even cannot be used; in addition, there is a case that the hook pin shaft is directly welded on the upper cross beam, and this design still has the problem that the coaxiality of the hook pin shaft on both sides of the quick-change device and the parallelism of the telescopic pin shaft cannot be guaranteed.

[0040] The quick-change device in the embodiment can effectively avoid the influence of high temperature deformation caused by welding on the hook pin shaft hole and the telescopic pin shaft hole, the hook pin shaft hole on the upper cross beam 16 and the telescopic pin shaft hole on the telescopic pin shaft seat 17 are both made by boring process after welding, which can effectively guarantee the coaxiality of the hook pin shaft 2 and the telescopic pin shaft 3 on both sides of the quick-change device and the parallelism of the hook pin shaft 2 and the telescopic pin shaft 3, and avoid the problem that the quick-change device is difficult to use or even cannot be used.

[0041] In the prior art, the limiting block usually needs to be welded on the tool by the user, which brings inconvenience to the user. Moreover, when other users purchase second-hand tools, they often cannot use the tools because the limiting blocks on the second-hand tools cannot match the quick-change device of their own, thereby further increasing the difficulty and cost of use.

[0042] In the embodiment, the limiting block mounting seat 18 is arranged on the quick-change device, and the limiting block 4 can be directly mounted on the limiting block mounting seat 18. Thus, the user does not need to weld the limiting block 4 on the tool, which brings convenience to the user. Moreover, when the user purchases a second-hand tool, the user does not need to worry about the installation position of the limiting block 4, thereby significantly reducing the difficulty and cost of use.

[0043] In some embodiments, for example, as shown in Figure 1 and Figure 5 The limiting block 4 is in a cam shape, the limiting block 4 is provided with a mounting hole, and is connected to the limiting block mounting seat 18 through a bolt. A lock washer is arranged between the limiting block 4 and the limiting block mounting seat 18. By adjusting the limiting block 4, the same quick-change device can be matched with different tools. The lock washer can effectively prevent the limiting block 4 from loosening, thereby ensuring the stability of the installation of the limiting block 4.

[0044] In some embodiments, for example, as shown in Figure 1 and Figure 6 The telescopic end and the fixed end of the hydraulic oil cylinder 5 are provided with mounting holes, and the end of the telescopic pin shaft 3 facing the hydraulic oil cylinder 5 is also provided with a mounting hole. The telescopic end and the fixed end of the hydraulic oil cylinder 5 respectively extend into the two telescopic pin shafts 3, so that the mounting holes are opposite to each other. The telescopic end and the fixed end of the hydraulic oil cylinder 5 are respectively connected and fixed with the two telescopic pin shafts 3 through the cooperation of the bolt and the mounting hole.

[0045] In the embodiment, the bending plate 15 is in a C-shaped structure as a whole. Along the telescopic direction of the hydraulic oil cylinder 5, the two ends of the upper side plate of the bending plate 15 are symmetrically provided with limiting grooves 151. The loader tool quick-change device further includes positioning sleeves 6 and indicating bending plates 7. The two positioning sleeves 6 are respectively arranged in the limiting grooves 151 at the two ends of the bending plate 15, and the two indicating bending plates 7 are respectively arranged at the upper ends of the two positioning sleeves 6. The positioning sleeves 6 and the lower ends of the indicating bending plates 7 are provided with mounting holes. The bolt passes through the positioning sleeves 6 and the indicating bending plates 7 in sequence, so as to fix the two groups of positioning sleeves 6 and indicating bending plates 7 at the telescopic end and the fixed end of the hydraulic oil cylinder 5.

[0046] In the prior art, there is no any mark on the quick change device so that the driver in the cab cannot determine whether the current quick change device is working and the working state of the current quick change device, and therefore, the driver cannot determine whether the current telescopic pin shaft 3 is completely inserted into the telescopic pin shaft hole of the implement. This situation not only brings inconvenience to the user, but also causes the driver to have a misoperation and results in a safety problem.

[0047] The quick change device in the embodiment solves the problem that the driver cannot observe the working state of the quick change device by arranging the positioning sleeve 6 and the indicating bent plate 7. The telescopic pin shaft 3, the hydraulic cylinder 5, the positioning sleeve 6 and the indicating bent plate 7 are screwed together by bolts. In this way, when the hydraulic cylinder 5 drives the telescopic pin shaft 3 to perform the telescopic movement, the positioning sleeve 6 can drive the indicating bent plate 7 to synchronously slide under the limiting and guiding of the limiting groove 151, so that the driver in the cab can determine whether the current quick change device is working by the movement of the indicating bent plate 7, and can also determine whether the current telescopic pin shaft 3 is extended to the position or retracted to the position by the position of the indicating bent plate 7, thereby effectively avoiding the safety hazard caused by the misoperation of the driver.

[0048] In some embodiments, for example Figure 6 As shown in the figure, the spring 52 is arranged in the hydraulic cylinder 5, the mounting groove is arranged on the bottom of the hydraulic cylinder 5, the mounting shaft hole is arranged in the inside of the piston rod 51 of the hydraulic cylinder 5, one end of the spring 52 is mounted in the mounting groove, and the other end of the spring 52 extends into the mounting shaft hole and abuts against the bottom of the mounting shaft hole.

[0049] In the prior art, when the oil supply pipeline in the hydraulic cylinder is damaged, the telescopic pin shaft will lose the control power and be out of control. In the use process of the implement, the telescopic pin shaft may be retracted from the telescopic pin shaft hole of the implement due to the lack of power, thereby causing the implement to fall off, be damaged and other accidents, and there is a great safety hazard.

[0050] In the embodiment, the spring 52 is arranged in the inside of the hydraulic cylinder 5, and the elastic force of the spring 52 is used to maintain the extension of the piston rod 51. In this way, even if the oil supply pipeline in the hydraulic cylinder 5 is damaged and the telescopic pin shaft 3 loses the power, the elastic force of the spring 52 can prevent the piston rod 51 from retracting, thereby avoiding the telescopic pin shaft 3 from retracting from the telescopic pin shaft hole of the implement, and effectively improving the use safety of the quick change device.

[0051] In some embodiments, for example Figure 3 As shown in the figure, one end of the hook pin shaft 2 is provided with a positioning hole, and the hook pin shaft 2 is screwed on the upper cross beam 16 through the positioning hole.

[0052] Further, a threaded hole is arranged on the end face of the hanger pin shaft 2 far away from the positioning hole, and the threaded hole is used to connect with external dismounting equipment so as to dismount the hanger pin shaft 2.

[0053] In addition, the application further discloses a loader, which comprises the loader accessory quick-change device disclosed in the above embodiments, and therefore the loader with the loader accessory quick-change device has all the technical effects described above, which will not be repeated here.

[0054] The loader accessory quick-change device and the loader according to the embodiments of the application are known to those skilled in the art, and will not be described in detail here.

[0055] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0056] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A loader implement quick change device characterized by, The loader accessory quick-change device comprises a quick-change frame, a hook pin shaft, a telescopic pin shaft, a limiting block and a hydraulic oil cylinder. The quick-change frame is welded by an outer vertical plate, an indicating plate guard plate, an inner vertical plate, a rib plate, a bent plate, an upper cross beam, a telescopic pin shaft seat and a limiting block mounting seat, wherein the hook pin shaft hole on the upper cross beam and the telescopic pin shaft hole on the telescopic pin shaft seat are both made by boring process after welding, the hook pin shaft and the telescopic pin shaft are respectively installed in the hook pin shaft hole and the telescopic pin shaft hole, the hydraulic oil cylinder is installed inside the bent plate, the telescopic end and the fixed end of the hydraulic oil cylinder are respectively connected with the telescopic pin shafts on both sides, the limiting block mounting seat is welded on the outside of the outer vertical plate, and the limiting block is installed on the limiting block mounting seat. The bent plate is in C-shaped structure as a whole, and along the telescopic direction of the hydraulic oil cylinder, limiting grooves are symmetrically arranged at the two ends of the upper side plate of the bent plate, and the loader accessory quick-change device further comprises positioning sleeves and indicating bent plates, two positioning sleeves are arranged in the limiting grooves at the two ends of the bent plate, two indicating bent plates are arranged at the upper ends of the two positioning sleeves, mounting holes are arranged in the positioning sleeves and the lower ends of the indicating bent plates, and bolts pass through the positioning sleeves and the indicating bent plates in sequence to fix the two groups of positioning sleeves and indicating bent plates at the telescopic end and the fixed end of the hydraulic oil cylinder. A spring is arranged in the hydraulic oil cylinder, a mounting groove is arranged on the bottom of the cylinder in the hydraulic oil cylinder, a mounting shaft hole is arranged in the inside of the piston rod of the hydraulic oil cylinder, one end of the spring is installed in the mounting groove, and the other end of the spring extends into the mounting shaft hole and abuts against the bottom of the mounting shaft hole. The limiting block is in cam shape, mounting holes are arranged on the limiting block, and the limiting block is connected to the limiting block mounting seat by bolts, and an anti-loosening washer is arranged between the limiting block and the limiting block mounting seat.

2. The loader implement quick change device of claim 1, wherein, Mounting holes are arranged at the telescopic end and the fixed end of the hydraulic oil cylinder, and a mounting hole is also arranged at the end of the telescopic pin shaft facing the hydraulic oil cylinder, the telescopic end and the fixed end of the hydraulic oil cylinder extend into the two telescopic pin shafts respectively, so that the mounting holes are opposite to the mounting hole, and the telescopic end and the fixed end of the hydraulic oil cylinder are connected and fixed with the two telescopic pin shafts by cooperating with the mounting holes using bolts.

3. The loader implement exchange device of claim 1, wherein, A positioning hole is arranged at one end of the hook pin shaft, and the hook pin shaft is fixed on the upper cross beam by a positioning hole screw.

4. The loader implement exchange device of claim 1, wherein, A threaded hole is arranged on the end face of the end of the hook pin shaft away from the positioning hole, and the threaded hole is used for connecting with external dismounting equipment, so as to dismount the hook pin shaft.

5. The loader implement exchange device of claim 4, wherein, The loader accessory quick-change device comprises the loader accessory quick-change device according to any one of claims 1-5.

6. A loader characterized by ​

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