Quick change device and operation machine

Abstract

The utility model provides a quick change device and an operation machine, and relates to the technical field of mechanical equipment. The quick-change device comprises two quick-change connectors and a connecting rod, the two quick-change connectors are arranged at intervals, the quick-change connectors are connected with the working device, and each quick-change connector is provided with a first connecting part connected with the working oil cylinder and a second connecting part connected with the working arm; the connecting rod is arranged between the two quick-change connectors, and the two ends of the connecting rod are detachably connected with the two quick-change connectors in a one-to-one correspondence mode through fasteners. The two ends of the connecting rod are detachably connected with the two quick-change connectors in a one-to-one correspondence mode through the fasteners, a traditional welding connection mode is replaced, and the problem that welding is prone to deformation is effectively solved; due to the fact that the connecting rod and the quick-change connector are detachably connected, the quick-change device can be conveniently maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a quick-change device and an operating machine. Background Art

[0002] Currently, the quick-change frame of a skid-steer loader is usually connected by welding, which is easy to deform, resulting in the left and right interface parts of the quick-change being not coplanar, requiring multiple corrections. In addition, the skid-steer loader frequently replaces accessories, and the left and right interface parts of the quick-change are prone to wear. After wear, repair and correction are time-consuming and inconvenient to maintain. Utility Model Content

[0003] The utility model provides a quick-change device, which is used to solve the problems of easy deformation and inconvenience in maintenance of the quick-change rack in the prior art.

[0004] The utility model provides a quick-change device, comprising:

[0005] Two quick-change interfaces, the two quick-change interfaces are spaced apart, the quick-change interfaces are connected to the working device, and the quick-change interfaces are provided with a first connection portion connected to the working cylinder and a second connection portion connected to the working arm;

[0006] A connecting rod is provided between the two quick-change interfaces, and both ends of the connecting rod are detachably connected to the two quick-change interfaces in a one-to-one correspondence through fasteners.

[0007] According to a quick-change device provided by the present invention, the quick-change interface includes:

[0008] a connecting plate, the connecting plate being used to connect with the working device;

[0009] At least two fixing plates are spaced apart along the length direction of the connecting rod on the side of the connecting plate away from the working device, one end of the connecting rod is detachably connected to the fixing plate on the inner side of one quick-change interface through a fastener, and the other end of the connecting rod is detachably connected to the fixing plate on the inner side of another quick-change interface through a fastener.

[0010] According to a quick-change device provided by the utility model, both ends of the connecting rod are provided with connecting flanges, the connecting flange at one end of the connecting rod is detachably connected to the fixing plate on the inner side of one quick-change interface through a fastener, and the connecting flange at the other end of the connecting rod is detachably connected to the fixing plate on the inner side of another quick-change interface through a fastener.

[0011] According to a quick-change device provided by the present invention, the fixing plates on the inner sides of the two quick-change interfaces are both provided with flange stops, and the end portions at both ends of the connecting rod are embedded in the corresponding flange stops.

[0012] According to a quick-change device provided by the utility model, the first connecting part includes two first connecting holes, the quick-change interface includes two fixed plates, the two first connecting holes are arranged one-to-one at one end of the two fixed plates, and the working cylinder is hinged to the corresponding two first connecting holes through a first pin shaft.

[0013] According to a quick-change device provided by the present invention, the second connecting portion includes a second connecting hole, the second connecting hole is arranged at the other end of the outer fixing plate, and the working arm is hinged to the second connecting hole through a second pin shaft.

[0014] According to a quick-change device provided by the present invention, a connecting sleeve is provided in the second connecting hole, and the second pin shaft is passed through the connecting sleeve.

[0015] According to a quick-change device provided by the present invention, a limiting groove is provided on a side of the working device facing the quick-change interface, and the connecting plate is clamped in the limiting groove.

[0016] According to a quick-change device provided by the present utility model, the quick-change interface further includes:

[0017] A locking mechanism is provided on a side of the connecting plate away from the working device, and the locking mechanism is used for locking and cooperating with the limiting groove.

[0018] The present utility model also provides an operating machine, comprising an operating machine body and the quick-change device described in any one of the above items, wherein the operating machine body is provided with the working cylinder and the working arm, the first connecting part is connected to the working cylinder, and the second connecting part is connected to the working arm.

[0019] The quick-change device provided by the utility model adopts fasteners to detachably connect the two ends of the connecting rod with the two quick-change interfaces one by one, replacing the traditional connection method using welding, and effectively avoiding the problem of easy deformation of welding; since the connecting rod and the quick-change interface adopt a detachable connection method, the quick-change device can be easily maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a three-dimensional structural diagram of the quick-change device provided by the utility model.

[0022] Figure 2 It is a three-dimensional structural diagram of the quick-change interface provided by the utility model.

[0023] Figure 3 It is a side cross-sectional structural diagram of the quick-change interface and the working device provided by the utility model when the handle is in the unlocked position.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting rod provided by the utility model.

[0025] Figure 5 It is a side sectional structural schematic diagram of the connecting rod provided by the utility model.

[0026] Figure 6 It is a structural schematic diagram of the quick-change device and the working device provided by the utility model.

[0027] Figure 7 It is a three-dimensional structural diagram of the operating machinery provided by the utility model.

[0028] Reference numerals:

[0029] 100. Quick-change interface; 110. Connecting plate; 120. Fixing plate; 130. Connecting flange; 140. Flange stop; 150. First connecting hole; 160. Second connecting hole; 170. Connecting sleeve; 180. Locking mechanism; 181. Handle; 182. Compression spring; 183. Lock tongue; 200. Connecting rod; 210. Fastener; 300. Working cylinder; 310. First pin; 400. Working arm; 420. Second pin; 500. Working device; 510. Upper limit slot; 520. Lower limit slot. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0032] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0034] The following combination Figure 1-Figure 7 The specific structure and working principle of the quick-change device of the present utility model are described.

[0035] like Figure 1 As shown, the quick-change device includes two quick-change interfaces 100 and a connecting rod 200. The two quick-change interfaces 100 are arranged at intervals, and the distance between the two quick-change interfaces 100 is determined according to the length of the connecting rod 200. The quick-change interface 100 is connected to the working device 500. The quick-change interface 100 is provided with a first connection part connected to the working cylinder 300 and a second connection part connected to the working arm 400; the connecting rod 200 is arranged between the two quick-change interfaces 100, and the two ends of the connecting rod 200 are detachably connected to the two quick-change interfaces 100 one by one through fasteners 210.

[0036] The quick-change device provided by the present invention adopts fasteners 210 to detachably connect the two ends of the connecting rod 200 with the two quick-change interfaces 100 in a one-to-one correspondence, replacing the traditional connection method of welding, and effectively avoiding the problem of easy deformation of welding; since the connecting rod 200 and the quick-change interface 100 adopt a detachable connection method, the quick-change device can be easily maintained.

[0037] It should be noted here that the working device 500 is a bucket. Of course, the specific type of the working device 500 is not limited thereto, and it may also be other components.

[0038] In one embodiment of the present invention, Figure 2 As shown, the quick-change interface 100 includes a connecting plate 110 and at least two fixing plates 120. The connecting plate 110 is rectangular, but the shape of the connecting plate 110 is not limited to this and may also adopt other shapes. The connecting plate 110 is used to connect to the working device 500 to connect the quick-change device to the working device 500. Preferably, the connecting plate 110 and the working device 500 are detachable to facilitate replacement or maintenance of the working device 500.

[0039] At least two fixing plates 120 are spaced apart along the length of the connecting rod 200 on the side of the connecting plate 110 facing away from the working device 500. The fixing plates 120 are welded to the connecting plate 110. Of course, the fixing plates 120 can also be integrally formed with the connecting plate 110. One end of the connecting rod 200 is detachably connected to the fixing plate 120 inside one quick-change interface 100 via a fastener 210, and the other end of the connecting rod 200 is detachably connected to the fixing plate 120 inside the other quick-change interface 100 via a fastener 210. In this embodiment, the fastener 210 is a bolt. Of course, the specific type of fastener 210 is not limited to this and other types of fasteners 210 are also possible.

[0040] The quick-change device provided by the present invention has two quick-change interfaces 100 with small individual components, which are easy to manufacture and can more easily ensure manufacturing accuracy.

[0041] In a preferred embodiment of the present invention, the quick-change interface 100 further includes a reinforcement member (not shown) disposed between two adjacent fixing plates 120. The reinforcement member and the fixing plates 120 are welded or integrally formed. The reinforcement member connects the two adjacent fixing plates 120, thereby effectively enhancing the overall structural strength of the fixing plates 120.

[0042] Furthermore, the connection between the reinforcement member and the connecting plate 110 can further strengthen the connection strength between the fixing plate 120 and the connecting plate 110 , thereby enhancing the overall structural strength of the quick-change device.

[0043] In one embodiment of the present invention, Figure 4 and Figure 5 As shown, the interior of the connecting rod 200 is hollow to reduce the weight of the connecting rod 200. The two ends of the connecting rod 200 are in a closed state. Specifically, sealing plates are welded to both ends of the connecting rod 200. The sealing plates improve the structural strength of the connecting rod 200 in the radial direction to prevent the connecting rod 200 from deforming after being subjected to force.

[0044] In one embodiment of the present invention, Figure 4 As shown, connecting flanges 130 are sleeved on both ends of the connecting rod 200. The connecting flanges 130 are welded or integrally formed with the connecting rod 200. The provision of the connecting flanges 130 increases the contact area between the connecting rod 200 and the inner fixing plate 120, thereby arranging more fasteners 210 to improve the connection strength between the connecting rod 200 and the fixing plate 120.

[0045] The connecting flange 130 at one end of the connecting rod 200 is detachably connected to the fixing plate 120 inside one quick-change interface 100 via a fastener 210, and the connecting flange 130 at the other end of the connecting rod 200 is detachably connected to the fixing plate 120 inside another quick-change interface 100 via a fastener 210. Figure 2 As shown, the left end of the connecting rod 200 is provided with a connecting flange 130, which is provided with multiple through holes, which are evenly spaced along the circumference. The inner fixing plate 120 of the left quick-change interface 100 is provided with multiple threaded holes, which correspond one-to-one with the multiple through holes. Bolts pass through the corresponding through holes and then threadably engage with the corresponding threaded holes, thereby connecting the left end of the connecting rod 200 to the inner fixing plate 120 of the left quick-change interface 100. The right end of the connecting rod 200 is also provided with a connecting flange 130, which is provided with multiple through holes, which are evenly spaced along the circumference. The inner fixing plate 120 of the right quick-change interface 100 is provided with multiple threaded holes, which correspond one-to-one with the multiple through holes. Bolts pass through the corresponding through holes and then threadably engage with the corresponding threaded holes, thereby connecting the right end of the connecting rod 200 to the inner fixing plate 120 of the right quick-change interface 100. In this embodiment, the connecting flange 130 is in the shape of a circular ring. Of course, the shape of the connecting flange 130 is not limited thereto, and may also be a rectangular ring or a ring body of other shapes.

[0046] It should be noted here that the fixed plate 120 on the inner side of the quick-change interface 100 of the present invention refers to the fixed plate 120 on one side of the two quick-change interfaces 100 facing each other, that is, the fixed plate 120 on the right side of the left quick-change interface 100 is the inner fixed plate 120, and the fixed plate 120 on the left side of the right quick-change interface 100 is the inner fixed plate 120.

[0047] In one embodiment of the present invention, Figure 2 As shown, the fixing plates 120 inside the two quick-change interfaces 100 are each provided with a flange stop 140, and the ends of the connecting rod 200 are embedded in the corresponding flange stop 140. Specifically, the fixing plate 120 on the right side of the left quick-change interface 100 is provided with a flange stop 140, and the fixing plate 120 on the left side of the right quick-change interface 100 is provided with a flange stop 140. The left end of the connecting rod 200 is embedded in the flange stop 140 of the left quick-change interface 100, and the right end of the connecting rod 200 is embedded in the flange stop 140 of the right quick-change interface 100. By providing the flange stop 140 and embedding the ends of the connecting rod 200 in the flange stop 140, the connection strength between the connecting rod 200 and the fixing plate 120 can be further strengthened.

[0048] In one embodiment of the present invention, Figure 2 As shown, the first connection portion includes two first connection holes 150, and the quick-change interface 100 includes two fixing plates 120. The two fixing plates 120 have the same shape and size to facilitate processing and reduce production costs. The two fixing plates 120 are arranged in parallel, and the side of the fixing plates 120 that contacts the connecting plate 110 is flat, which increases the welding area and improves the connection strength between the fixing plates 120 and the connecting plate 110.

[0049] Two first connection holes 150 are provided in a one-to-one correspondence at one end of the two fixed plates 120. In this embodiment, the first connection holes 150 are located at the upper end of the fixed plates 120. Both first connection holes 150 are circular holes, with the central axes of the two first connection holes 150 being aligned. The two first connection holes 150 are of equal size, that is, the inner diameters of the two first connection holes 150 are equal. The working cylinder 300 is hingedly connected to the corresponding two first connection holes 150 via a first pin 310. Specifically, the working cylinder 300 is located between the two fixed plates 120. The two fixed plates 120 can limit the working cylinder 300. The first pin 310 passes through one first connection hole 150, then through the working cylinder 300, and then through the other first connection hole 150, thereby hingedly connecting the working cylinder 300 to the two first connection holes 150.

[0050] In one embodiment of the present invention, Figure 1 and Figure 2As shown, the second connection portion includes a second connection hole 160, which is provided at the other end of the outer fixing plate 120. In this embodiment, the second connection hole 160 is located at the lower end of the fixing plate 120. The working arm 400 is hingedly connected to the second connection hole 160 via a second pin 420. Specifically, the left working arm 400 is located to the left of the left quick-change interface 100 and is hingedly connected to the second connection hole 160 of the left quick-change interface 100 via the second pin 420. The right working arm 400 is located to the right of the right quick-change interface 100 and is hingedly connected to the second connection hole 160 of the right quick-change interface 100 via the second pin 420. When the working cylinder 300 is extended or retracted, the working cylinder 300 drives the working device 500 to rotate about the second pin 420 to adjust the working device 500.

[0051] It should be noted here that the fixing plate 120 on the outside of the quick-change interface 100 of the present invention refers to the fixing plate 120 on the side away from each other of the two quick-change interfaces 100, that is, the fixing plate 120 on the left side of the left quick-change interface 100 is the outer fixing plate 120, and the fixing plate 120 on the right side of the right quick-change interface 100 is the outer fixing plate 120.

[0052] In one embodiment of the present invention, Figure 1 and Figure 2 As shown, a connecting sleeve 170 is disposed within the second connecting hole 160. Connecting sleeve 170 is welded to the outer fixing plate 120. A second pin 420 is disposed within connecting sleeve 170 and extends along the thickness of fixing plate 120. Because the contact surface between second pin 420 and second connecting hole 160 is relatively small, second connecting hole 160 is susceptible to wear. By disposing connecting sleeve 170 within second connecting hole 160 and extending along the thickness of fixing plate 120, a larger contact surface is created between connecting sleeve 170 and second pin 420, making connecting sleeve 170 less susceptible to wear and effectively extending its service life.

[0053] Furthermore, in order to improve the stability of the connecting sleeve 170 , the connecting sleeve 170 is welded to the outer fixing plate 120 .

[0054] In one embodiment of the present invention, a limiting groove is provided on the side of the working device 500 facing the quick-change interface 100, and the connecting plate 110 is locked in the limiting groove. By locking the connecting plate 110 in the limiting groove, the installation and removal of the working device 500 can be facilitated, thereby improving assembly efficiency.

[0055] In a specific embodiment of the present invention, Figure 6As shown, the limit groove includes an upper limit groove 510 and a lower limit groove 520. The upper limit groove 510 and the lower limit groove 520 are spaced apart in the vertical direction. The upper limit groove 510 is located above the lower limit groove 520, with the opening of the upper limit groove 510 facing downward. The upper limit groove 510 is welded to the side of the working device 500 facing the quick-change interface 100. The opening of the lower limit groove 520 faces upward, and the lower limit groove 520 is welded to the side of the working device 500 facing the quick-change interface 100. The upper side edge of the connecting plate 110 is clamped in the upper limit groove 510. Preferably, the upper side edge of the connecting plate 110 is configured as a bent edge.

[0056] In a specific embodiment of the present invention, Figure 3 and Figure 6 As shown, the quick-change interface 100 also includes a locking mechanism 180, which is disposed on the side of the connecting plate 110 facing away from the working device 500. The locking mechanism 180 is configured to lock with the limiting groove. Specifically, the locking mechanism 180 includes a handle 181, a compression spring 182, and a locking tongue 183. The handle 181 is hinged to the connecting plate 110 and partially located between the two fixed plates 120. The inner fixed plate 120 is provided with a clearance hole. One end of the handle 181 extends from the clearance hole. One end of the compression spring 182 is connected to the handle 181, and the other end of the compression spring 182 is connected to the locking tongue 183. The handle 181 is adapted to switch between an unlocked position and a locked position. In the locked position, the handle 181 moves upward, disengaging the locking tongue 183 from the lower limiting groove 520. In the unlocked position, the handle 181 moves downward, inserting the locking tongue 183 into the lower limiting groove 520, thereby locking the quick-change device and the working device 500 together.

[0057] The following combination Figures 1 to 6 Describe a specific embodiment of the utility model, such as Figures 1 to 4 As shown, the quick-change device includes two quick-change interfaces 100 and a connecting rod 200 . The two quick-change interfaces 100 are spaced apart, and the distance between the two quick-change interfaces 100 is equal to the length of the connecting rod 200 .

[0058] The quick-change interface 100 includes a connecting plate 110, two fixing plates 120, and a locking mechanism 180. The connecting plate 110 is a rectangular plate and is used to connect to the working device 500 to connect the quick-change device to the working device 500. The two fixing plates 120 are spaced apart along the length of the connecting rod 200 on the side of the connecting plate 110 facing away from the working device 500. The fixing plates 120 are welded to the connecting plate 110. The two fixing plates 120 have the same shape and size and are arranged in parallel.

[0059] The connecting rod 200 is horizontally arranged between the two quick-change interfaces 100. The interior of the connecting rod 200 is hollow, and sealing plates are welded to both ends of the connecting rod 200 to seal the ends of the connecting rod 200. The connecting flange 130 is provided on both ends of the connecting rod 200. The connecting flange 130 is circular and welded to the connecting rod 200. The left end of the connecting rod 200 is provided with a connecting flange 130, which is provided with multiple through holes. The multiple through holes are arranged at equal intervals along the circumference. The inner fixing plate 120 of the left quick-change interface 100 is provided with multiple threaded holes. The multiple threaded holes correspond to the multiple through holes in a one-to-one manner. Bolts pass through the corresponding through holes and then threadably engage with the corresponding threaded holes, thereby connecting the left end of the connecting rod 200 to the inner fixing plate 120 of the left quick-change interface 100.

[0060] The right end of the connecting rod 200 is also provided with a connecting flange 130, and the connecting flange 130 is provided with a plurality of through holes, and the plurality of through holes are arranged at equal intervals along the circumference. The inner fixing plate 120 of the right quick-change interface 100 is provided with a plurality of threaded holes, and the plurality of threaded holes correspond one-to-one to the plurality of through holes. After the bolts pass through the corresponding through holes, they are threadedly engaged with the corresponding threaded holes, thereby connecting the right end of the connecting rod 200 with the inner fixing plate 120 of the right quick-change interface 100.

[0061] The fixing plate 120 on the right side of the left quick-change interface 100 is provided with a flange stop 140, and the fixing plate 120 on the left side of the right quick-change interface 100 is provided with a flange stop 140. The left end of the connecting rod 200 is embedded in the flange stop 140 on the left, and the right end of the connecting rod 200 is embedded in the flange stop 140 on the right.

[0062] The first connection portion includes two circular through-holes 150 located at the upper end of the fixing plate 120. The central axes of the two first connection holes 150 are aligned, and the inner diameters of the two first connection holes 150 are equal. The hydraulic cylinder 300 is located between the two fixing plates 120, which act as a position limiter for the hydraulic cylinder 300. The first pin 310 passes through one of the first connection holes 150, then through the hydraulic cylinder 300, and then through the other first connection hole 150, thereby hingedly connecting the hydraulic cylinder 300 to the two first connection holes 150.

[0063] The second connecting part includes a second connecting hole 160, which is arranged at the lower end of the outer fixed plate 120. A connecting sleeve 170 is arranged in the second connecting hole 160, and the connecting sleeve 170 is welded to the outer fixed plate 120. The second pin shaft 420 is passed through the connecting sleeve 170, and the connecting sleeve 170 extends along the thickness direction of the fixed plate 120. The connecting sleeve 170 is fixedly welded to the outer side.

[0064] The working device 500 is provided with a limit slot on the side facing the quick-change interface 100. The limit slot includes an upper limit slot 510 and a lower limit slot 520. The upper limit slot 510 and the lower limit slot 520 are spaced apart in the vertical direction. The upper limit slot 510 is located above the lower limit slot 520, with the opening of the upper limit slot 510 facing downward. The upper limit slot 510 is welded to the side of the working device 500 facing the quick-change interface 100. The opening of the lower limit slot 520 faces upward. The lower limit slot 520 is welded to the side of the working device 500 facing the quick-change interface 100. The upper side edge of the connecting plate 110 is clamped in the upper limit slot 510. Furthermore, the upper side edge of the connecting plate 110 is configured as a bent edge. In this way, the deeper the upper side edge of the connecting plate 110 is clamped into the upper limit slot 510, the tighter the connecting plate 110 is clamped.

[0065] The quick-change interface 100 also includes a locking mechanism 180, which is disposed on the side of the connecting plate 110 facing away from the working device 500. The locking mechanism 180 is configured to lock with the limiting groove. Specifically, the locking mechanism 180 includes a handle 181, a compression spring 182, and a locking tongue 183. The handle 181 is hinged to the connecting plate 110 and partially located between the two fixed plates 120. The inner fixed plate 120 is provided with a clearance hole. One end of the handle 181 extends from the clearance hole. One end of the compression spring 182 is connected to the handle 181, and the other end of the compression spring 182 is connected to the locking tongue 183. The handle 181 is adapted to switch between an unlocked position and a locked position. In the locked position, the handle 181 moves upward, disengaging the locking tongue 183 from the lower limiting groove 520. In the unlocked position, the handle 181 moves downward, inserting the locking tongue 183 into the lower limiting groove 520, thereby locking the quick-change device and the working device 500 together.

[0066] like Figure 7 As shown, the utility model also provides an operating machine, which includes an operating machine body and the quick-change device described in any one of the above embodiments. The operating machine body is provided with a working cylinder 300 and a working arm 400, the first connecting part is connected to the working cylinder 300, and the second connecting part is connected to the working arm 400.

[0067] It should be noted here that the working machine in this embodiment is a skid steer loader. Of course, the specific type of the working machine is not limited thereto, and it may also be other types of working machines.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A quick change device, characterized in that: include: Two quick-change interfaces (100), the two quick-change interfaces (100) are arranged at intervals, the quick-change interfaces (100) are connected to the working device (500), and the quick-change interfaces (100) are provided with a first connection portion connected to the working cylinder (300) and a second connection portion connected to the working arm (400); A connecting rod (200) is provided between the two quick-change interfaces (100), and two ends of the connecting rod (200) are detachably connected to the two quick-change interfaces (100) in a one-to-one correspondence via fasteners (210).

2. The quick-change device according to claim 1, characterized in that: The quick-change interface (100) comprises: a connecting plate (110), the connecting plate (110) being used to connect to the working device (500); At least two fixing plates (120), the at least two fixing plates (120) are spaced apart along the length direction of the connecting rod (200) on a side of the connecting plate (110) away from the working device (500), one end of the connecting rod (200) is detachably connected to the fixing plate (120) on the inner side of one of the quick-change interfaces (100) via a fastener (210), and the other end of the connecting rod (200) is detachably connected to the fixing plate (120) on the inner side of another of the quick-change interfaces (100) via a fastener (210).

3. The quick-change device according to claim 2, characterized in that: Both ends of the connecting rod (200) are sleeved with connecting flanges (130), and the connecting flange (130) at one end of the connecting rod (200) is detachably connected to the fixing plate (120) inside one of the quick-change interfaces (100) via a fastener (210), and the connecting flange (130) at the other end of the connecting rod (200) is detachably connected to the fixing plate (120) inside another quick-change interface (100) via a fastener (210).

4. The quick-change device according to claim 2, characterized in that: The fixing plates (120) inside the two quick-change interfaces (100) are both provided with flange stoppers (140), and the ends of both ends of the connecting rod (200) are embedded in the corresponding flange stoppers (140).

5. The quick-change device according to any one of claims 2 to 4, characterized in that: The first connecting portion includes two first connecting holes (150), the quick-change interface (100) includes two fixing plates (120), the two first connecting holes (150) are arranged one-to-one at one end of the two fixing plates (120), and the working cylinder (300) is hinged to the corresponding two first connecting holes (150) via a first pin shaft (310).

6. The quick-change device according to claim 5, characterized in that: The second connecting portion comprises a second connecting hole (160), the second connecting hole (160) being arranged at the other end of the outer fixing plate (120), and the working arm (400) being hinged to the second connecting hole (160) via a second pin shaft (420).

7. The quick-change device according to claim 6, characterized in that: A connecting sleeve (170) is provided in the second connecting hole (160), and the second pin shaft (420) is passed through the connecting sleeve (170).

8. The quick-change device according to any one of claims 2 to 4, characterized in that: A limiting groove is provided on a side of the working device (500) facing the quick-change interface (100), and the connecting plate (110) is clamped in the limiting groove.

9. The quick-change device according to claim 8, characterized in that: The quick-change interface (100) further includes: A locking mechanism (180) is provided on a side of the connecting plate (110) facing away from the working device (500), and the locking mechanism (180) is used for locking and cooperating with the limiting groove.

10. A working machine, characterized in that: The invention comprises an operating machine body and the quick-change device according to any one of claims 1 to 9, wherein the operating machine body is provided with the working cylinder (300) and the working arm (400), the first connecting portion is connected to the working cylinder (300), and the second connecting portion is connected to the working arm (400).

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