Shovel blade connection and guidance mechanism and working machine

Abstract

This invention relates to a blade connection and guiding mechanism and a working machine. The blade connection and guiding mechanism includes a guide rail and a corner positioner. The guide rail is fixed to the blade, and the corner positioner defines a guide groove in which the guide rail is slidably received. The sliding guide portion of the guide rail includes a wedge-shaped portion tapering towards the guide groove. The wedge-shaped portion has a first guide rail front guide surface and a first guide rail rear guide surface angled relative to the horizontal plane and angled relative to each other. The guide groove includes a first guide groove front guide surface and a first guide groove rear guide surface adapted to slide in contact with the first guide rail front guide surface and the first guide rail rear guide surface, respectively. The blade connection and guiding mechanism according to the invention utilizes a wedge-shaped fit structure between the guide rail and the guide groove of the corner positioner to ensure good guidance when the guide rail moves laterally in the guide groove. Even if the wear plate in the guide groove wears, automatic centering compensation of the guide rail can be achieved, thereby improving the movement stability and smoothness of the blade during lateral movement during operation.

Description

Technical Field

[0001] This invention relates to the field of machinery components technology, and in particular to a blade connection and guiding mechanism for use in machinery equipped with blades. Background Technology

[0002] The blade is a key tool on construction machinery such as graders and bulldozers. It can generally perform movements such as lifting, tilting, rotating and extending to enable the construction machinery to complete tasks such as leveling, cutting, side removal of soil, roadbed shaping and slope trimming.

[0003] During operation, the blade needs to move left and right in real time (called "lateral movement") to adapt to changes in road conditions. Lateral movement is achieved by using a blade lateral movement cylinder to drive the blade and the guide rail mounted on the back of the blade to slide left and right along the angle positioner mounted on the frame of the earthmoving machinery. Due to the harsh working conditions of earthmoving machinery, the friction pair between the blade guide rail mixed with mud and sand and the wear-resistant plate on the angle positioner will wear out faster. If the wear-resistant plate is not replaced in time, excessive movement clearance will be generated between the guide rail and the wear-resistant plate, making the lateral movement of the guide rail in the angle positioner less directional. This not only affects the stability and smoothness of the blade movement, but also accelerates the failure of the blade lateral movement cylinder. Summary of the Invention

[0004] The purpose of this invention is to solve at least one of the above-mentioned problems and / or other defects in the prior art.

[0005] To achieve the above objectives, one aspect of the present invention provides a blade connection and guiding mechanism, including a guide rail and an angled device, the guide rail being fixedly connected to the blade, and the angled device defining a guide groove therein in which the guide rail is slidably received. The sliding guide portion of the guide rail includes a wedge-shaped portion tapering toward the guide groove, the wedge-shaped portion having a first guide rail front guide surface and a first guide rail rear guide surface angled relative to a horizontal plane and angled relative to each other, and the guide groove including a first guide groove front guide surface and a first guide groove rear guide surface adapted to slide in contact with the first guide rail front guide surface and the first guide rail rear guide surface, respectively.

[0006] According to one embodiment of the present invention, the front guide surface and the rear guide surface of the first guide groove are respectively provided by the surfaces of the front wear-resistant plate and the rear wear-resistant plate separately disposed in the guide groove.

[0007] According to one embodiment of the present invention, the front wear plate and the rear wear plate are replaceably inserted into the guide groove along the side of the corner positioner, and the corner positioner includes a side pressure plate detachably mounted on its side to prevent the front wear plate and the rear wear plate from dislodging laterally from the guide groove.

[0008] According to one embodiment of the present invention, the corner positioner includes a front pressure plate and a rear pressure plate that together define the guide groove, and at least one shim removably disposed between the front pressure plate and the rear pressure plate to adjust the width of the guide groove in the front-rear direction.

[0009] According to one embodiment of the present invention, the front pressure plate and the rear pressure plate are fastened together by a spiral fastener to clamp the at least one gasket, and the gasket is provided with a U-shaped groove that allows the spiral fastener in the installation position to enter and exit.

[0010] According to one embodiment of the present invention, the first guide rail front guide surface and the first guide rail rear guide surface are inclined surfaces extending obliquely forward and obliquely backward from the end of the wedge-shaped portion, respectively.

[0011] According to one embodiment of the present invention, the inclination angle of the rear guide surface of the first guide rail relative to the vertical plane is smaller than the inclination angle of the front guide surface of the first guide rail relative to the vertical plane.

[0012] According to one embodiment of the present invention, the angle formed by the front guide surface of the first guide rail and the rear guide surface of the first guide rail is between 60 degrees and 120 degrees.

[0013] According to one embodiment of the present invention, the sliding guide portion of the guide rail further includes a second guide rail front guide surface and a second guide rail rear guide surface that are respectively connected to the first guide rail front guide surface and the first guide rail rear guide surface and are both vertically oriented, and the guide groove includes a second guide groove front guide surface and a second guide groove rear guide surface that are adapted to slide in contact with the second guide rail front guide surface and the second guide rail rear guide surface respectively.

[0014] According to one embodiment of the present invention, the rear guide surface of the second guide groove extends higher in the vertical direction than the front guide surface of the second guide groove.

[0015] Another aspect of the present invention provides a working machine that includes a blade and a blade connection and guiding mechanism as described above.

[0016] The shovel connection and guiding mechanism according to the present invention connects the shovel to the frame of the working machine and guides the lateral movement of the shovel via a guide rail fixed to the shovel and an angled device that slidably receives the guide rail. The sliding guide portion of the guide rail is designed with a wedge-shaped section, and the corresponding guide groove in the angled device for frictional contact with the guide rail is also designed as a matching wedge-shaped groove. Compared with existing guide rail and guide groove structures with rectangular cross-sections, this wedge-shaped fit structure provides excellent guidance when the guide rail moves laterally in the guide groove. Even if the wear-resistant plate in the guide groove wears, automatic centering compensation of the guide rail can be achieved, reducing the gap between the guide rail and the guide groove, thereby improving the stability and smoothness of the shovel's lateral movement during operation. The shovel connection and guiding mechanism according to the present invention can also optionally adjust the gap between the guide rail and the guide groove by removing the shims provided in the angled device. This not only reduces the machining accuracy requirements of the shovel guide rail friction pair but also greatly extends the service life of the wear-resistant plate and reduces replacement and maintenance costs. Furthermore, the blade connection and guiding mechanism according to the present invention is easier to install and disassemble for replacing the wear-resistant plate compared to existing blade guide rail structures. Attached Figure Description

[0017] The features and advantages of the present invention will become clear from the following detailed description provided with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and therefore should not be considered as limitations on the invention, wherein:

[0018] Figure 1 This is a perspective view of an exemplary working machine to which the blade connection and guiding mechanism according to the present invention can be applied.

[0019] Figure 2 This is a perspective view of a blade connection and guiding mechanism and a corresponding blade, as shown from a rear-facing angle, according to an embodiment of the present invention.

[0020] Figure 3 yes Figure 2 The rear view of the structure shown;

[0021] Figure 4 yes Figure 2 Left view of the structure shown;

[0022] Figure 5 yes Figure 4 Front view of the portion circled in dashed lines;

[0023] Figure 6 yes Figure 4 The right view of the part circled in dashed circles;

[0024] Figure 7 It is along Figure 5 The sectional view taken by line AA in the figure. Detailed Implementation

[0025] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to enable those skilled in the art to more fully understand and implement the invention. However, it will be apparent to those skilled in the art that implementation of the invention may not include some of these specific details. Furthermore, it should be understood that the invention is not limited to the specific embodiments described. Rather, the invention can be conceived to be practiced with any combination of the features and elements described below, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments, and advantages are for illustrative purposes only and should not be construed as elements or limitations of the claims unless expressly set forth in the claims.

[0026] Figure 1 An exemplary work machine 100 equipped with a blade 1 is shown. The work machine 100 may be, but is not limited to, the wheeled grader illustrated. The work machine 100 may be any work machine equipped with a laterally movable blade and utilizing that blade to perform operations related to a specific industry (e.g., construction, earthmoving, etc.), such as a tracked bulldozer. The work machine 100 may include a main frame 90, an operator's accommodation space (e.g., a cab 95), and the blade 1 as a working implement. A wheeled running gear 96 is arranged at the lower part of the work machine 100 for supporting and moving the work machine 100. The blade 1 is attached to a body structure 91 on the main frame 90 via a blade connection and guide mechanism according to the invention, and during operation, it can be connected to a blade lateral movement cylinder (…). Figure 1 The image shows the piston rod 40 moving left and right under the guidance of the blade connection and guide mechanism.

[0027] The following is for reference Figures 2 to 7 The specific structure of the blade connection and guiding mechanism according to an embodiment of the present invention is described. In its normal mounting state on the operating machine 100, the blade 1, generally rectangular curved plate in shape, is arranged in a roughly vertical orientation, with its working surface (the concave side) facing the front of the operating machine, and its back side (opposite to the working surface) facing the rear of the operating machine. Its lateral orientation (i.e., its longitudinal orientation) corresponds to the left-right direction of the operating machine. In this document, directional / positional terms such as "front," "rear," "up," "down," and "lateral" are used to describe the blade 1 and its associated components in the aforementioned normal orientation.

[0028] The blade connection and guiding mechanism according to this embodiment mainly includes a guide rail 2 and a corner positioner 10. The guide rail 2 extends longitudinally along the blade 1 and is fixed to the back of the blade 1, for example, by a bracket 3. The blade 1 may be equipped with two parallel guide rails 2 arranged vertically. The guide rail 2 is slidably received in the corner positioner 10 so that it can move left and right relative to the corner positioner. One or more (e.g., two in the illustrated embodiment) corner positioners 10 are arranged longitudinally along the guide rail 2, and each corner positioner 10 is fixed to the body structure 91 of the main frame of the working machine by its mounting plate 11 (e.g., two parallel mounting plates 11 fixed together in the illustrated embodiment). A sleeve 45 may be provided between each corner positioner 10 to connect them together to enhance the overall strength of each corner positioner. The sleeve 45 may also receive the cylinder barrel (not shown) of the blade lateral movement cylinder, the piston rod 40 of the blade lateral movement cylinder extending from the cylinder barrel and its free end fixed to one end of the blade 1. Thus, when the lateral movement cylinder of the shovel is activated, the extension and retraction of its piston rod 40 can drive the shovel 1 and its guide rail 2 to move laterally relative to the corner positioner 10 and the main frame therefrom.

[0029] To guide the lateral movement of the guide rail 2, each cornering device 10 includes a structure in which the guide rail 2 is slidably received. Figure 4 As can be seen, the corner unit 10 defines two such receiving structures for each of the upper and lower guide rails 2. These two receiving structures are identical, except that their installation orientation is reversed relative to each other. Therefore, the following description will only apply to... Figure 4 The receiving structure circled in dashes at the bottom is the same as the receiving structure at the top.

[0030] Reference Figures 5 to 7 The aforementioned receiving structure in the corner positioner 10 includes a guide groove 15 in which the guide rail 2 is slidably received. When the guide rail 2 moves laterally, the guide groove 15 can slide into contact with a portion of the guide rail 2 to guide or direct the guide rail 2. The portion of the guide rail 2 that can slide into contact with the guide groove 15 is referred to as its sliding guide portion.

[0031] In existing technology, the cross-section of the sliding guide portion of the guide rail and the corresponding cross-section of the guide groove are both rectangular. As the wear-resistant material within the guide groove gradually wears down, a gradually widening gap develops between the sliding guide portion and the guide groove, and this gap cannot be adjusted. When this gap becomes too large, the guiding performance of the guide rail's lateral movement within the guide groove deteriorates, affecting the stability and smoothness of the guide rail and blade movement, and accelerating the failure of the blade's lateral movement cylinder. To solve this problem, in this invention, the sliding guide portion of the guide rail 2 includes a wedge-shaped portion (or a V-shaped portion in cross-section) 20 that tapers towards the guide groove 15. Figure 7As shown, the wedge-shaped portion 20 has a first guide rail front guide surface 21f and a first guide rail rear guide surface 21r that are angled relative to the horizontal plane and to each other. Figure 7 The right side of the diagram points to the front of the working machinery or blade, and the left side points to the rear of the working machinery or blade. Here, the terms "front" and "rear" guide surfaces refer to the former being positioned in front of the latter. The first guide rail front guide surface 21f and the first guide rail rear guide surface 21r are angled relative to the horizontal plane, meaning they are not horizontally oriented. Simultaneously, the first guide rail front guide surface 21f and the first guide rail rear guide surface 21r are angled relative to each other, i.e., not parallel, thus forming a wedge-shaped portion 20. Matching the wedge-shaped portion 20 of the guide rail 2, the guide groove 15 includes a first guide groove front guide surface 61f and a first guide groove rear guide surface 81r adapted to slide in contact with the first guide rail front guide surface 21f and the first guide rail rear guide surface 21r, respectively. Due to this adaptation of the first guide groove front guide surface 61f and the first guide groove rear guide surface 81r to the first guide rail front guide surface 21f and the first guide rail rear guide surface 21r, respectively, from... Figure 6 and 7 As can be seen, the front guide surface 61f and the rear guide surface 81r of the first guide groove are also wedge-shaped or V-shaped relative to each other, that is, the guide groove 15 is also roughly a wedge-shaped groove. This wedge-shaped fit between the wedge-shaped part of the guide rail and the wedge-shaped guide groove gives the guide rail good guiding performance when it moves laterally in the guide groove. Even if the part of the guide groove that comes into frictional contact with the wedge-shaped part of the guide rail wears, the guide rail can automatically center itself under the weight of the guide rail and the blade itself, so that the gap between the guide rail and the guide groove is not too large, thereby improving the stability and smoothness of the blade's movement when it moves laterally during operation.

[0032] It should be noted that the above describes Figure 4 The lower guide rail and guide groove are circled in the middle. However, for the upper guide rail and its guide groove, the wedge-shaped fit between them enables the guide rail to move upward under the upward force during the operation of the blade (not under the gravity of the guide rail and the blade), and also realizes the automatic centering compensation function of the guide rail.

[0033] The front guide surface 21f and the rear guide surface 21r of the first guide rail are at an angle to each other, meaning they can intersect, but the intersection does not necessarily form a sharp corner; instead, they can be rounded or chamfered, for example, through another curved surface or plane. Correspondingly, the front guide surface 61f and the rear guide surface 81r of the first guide groove can also intersect, and a sharp corner, rounded corner, or chamfer can be formed at the intersection. Alternatively, the front guide surface 61f and the rear guide surface 81r of the first guide groove may not directly intersect or connect, but rather be spaced apart, as long as the front guide surface 61f and the rear guide surface 81r can slide in contact with the front guide surface 21f and the rear guide surface 21r of the first guide rail, respectively. For example, in Figure 6 and 7 In the embodiment shown, the front guide surface 61f of the first guide groove and the rear guide surface 81r of the first guide groove are separated from each other by a gap S, thereby avoiding the sharp corners, rounded corners or chamfers formed at the connection between the front guide surface 21f of the first guide rail and the rear guide surface 21r of the first guide rail, reducing unnecessary wear, and this does not affect the centering compensation function that the wedge-shaped fit structure between the guide rail and the guide groove can achieve.

[0034] The guide groove includes a wear-resistant material to form the surfaces of the guide groove that will have frictional contact with the guide rail (e.g., the first guide groove front guide surface 61f and the first guide groove rear guide surface 81r). In the illustrated embodiment, the first guide groove front guide surface 61f and the first guide groove rear guide surface 81r are provided by the surfaces of a front wear-resistant plate 60 and a rear wear-resistant plate 80 separately disposed within the guide groove 15, respectively. The separate arrangement of the front wear-resistant plate 60 and the rear wear-resistant plate 80 provides greater flexibility in the manufacture of the wear-resistant plates and their arrangement within the guide groove, and allows the aforementioned gap S to be provided between the first guide groove front guide surface 61f and the first guide groove rear guide surface 81r. The wear-resistant plates 60 and 80 can be made of various suitable wear-resistant materials, including but not limited to hard materials such as bronze, brass, and polyurethane.

[0035] In the illustrated embodiment, such as Figure 6 and 7 As shown, the first guide rail front guide surface 21f and the first guide rail rear guide surface 21r are inclined surfaces extending obliquely forward and obliquely backward respectively from the end of the wedge-shaped portion 20 (i.e., the narrowed end). Figure 6 The left side of the image represents the front, and the right side represents the back. Figure 7 (The opposite of the middle). For example Figure 6 As shown, the inclination angle of the front guide surface 21f of the first guide rail relative to the vertical plane V is α. f The inclination angle of the rear guide surface 21r of the first guide rail relative to the vertical plane V is α. r The angle (α) formed by the front guide surface 21f and the rear guide surface 21r of the first guide rail. f +αr The angle can be between 60 and 120 degrees, for example, 90 degrees. This angle range is beneficial for achieving a good balance between the centering compensation function of the guide rail and the support and wear resistance of the guide groove for the guide rail. Because the blade 1 mainly bears the rearward load during operation, the guide rail 2 will bear a larger and more frequent load on its back side (roughly facing rearward) than on its front side (roughly facing forward); therefore, the inclination angle α of the rear guide surface 21r of the first guide rail relative to the vertical plane V is... r It can be set to be less than the inclination angle α of the first guide rail front guide surface 21f relative to the vertical plane V. f Correspondingly, the inclination angle of the first guide groove rear guide surface 81r, which is adapted to contact the first guide rail rear guide surface 21r, relative to the vertical plane V is also smaller than the inclination angle of the first guide groove front guide surface 61f, which is adapted to contact the first guide rail front guide surface 21f, relative to the vertical plane V. This allows the first guide rail rear guide surface 21r and the first guide groove rear guide surface 81r to withstand larger and more frequent loads.

[0036] Although the front guide surface 21f and the rear guide surface 21r of the first guide rail are both inclined surfaces extending from the end of the wedge-shaped portion 20 in the illustrated embodiment, in other embodiments, one of them may be a vertical surface and the other an inclined surface, which can also form the wedge-shaped portion of the guide rail.

[0037] like Figure 6 and 7 As shown, in one embodiment, the sliding guide portion of the guide rail 2 may further include a second guide rail front guide surface 22f and a second guide rail rear guide surface 22r, which are respectively connected to the first guide rail front guide surface 21f and the first guide rail rear guide surface 21r and are both vertically oriented. Correspondingly, the guide groove 15 may include a second guide groove front guide surface 62f and a second guide groove rear guide surface 82r adapted to slide in contact with the second guide rail front guide surface 22f and the second guide rail rear guide surface 22r, respectively. Thus, the guide rail 2 can be held more stably and securely within the guide groove 15 in the front-rear direction, facilitating better guidance of the lateral movement of the guide rail 2 by the guide groove 15. For the illustrated embodiment, this configuration makes both the front wear plate 60 and the rear wear plate 80 bends comprising vertical and inclined portions and thus having bends. Advantageously, see... Figure 7 The rear guide surface 82r of the second guide groove (or the vertical part of the rear wear-resistant plate 80) extends higher in the vertical direction than the front guide surface 62f of the second guide groove (or the vertical part of the front wear-resistant plate 60), which is beneficial to provide more reliable and powerful support for the guide rail 2 on the back side that bears more load.

[0038] To form the guide groove 15, the corner bracket 10 may include a front pressure plate 13 and a rear pressure plate 12 fixed to a mounting plate 11 of the corner bracket 10. The front and rear pressure plates are connected and joined together to define the guide groove 15 in the corner bracket 10. For example, the front pressure plate 13 and the rear pressure plate 12 may be fastened to each other in the front-rear direction by screw fasteners (such as bolts or screws) 131, and the guide groove 15 may be defined between them. In the illustrated embodiment, advantageously, a shim or a plurality of stacked shims 70 is also provided between the front pressure plate 13 and the rear pressure plate 12. The shim 70, for example, is formed of steel plate and can be removed from between the front pressure plate 13 and the rear pressure plate 12, thereby allowing adjustment of the gap between the two pressure plates, and thus adjustment of the width of the guide groove 15 in the front-rear direction. The removable shim 70 serves the following functions: As the guide rail 2 and guide groove 15 continue to rub against each other, the front and rear wear plates are worn thinner. The guide rail 2 gradually moves downwards due to the centering compensation effect of its wedge-shaped portion 20. When the end of the wedge-shaped portion 20 touches the shim 70, the guide rail 2 can no longer move downwards. At this point, even if the front and rear wear plates have not yet reached their wear life, they can no longer function through wear. However, if at least one shim 70 is removed from between the front and rear pressure plates and then tightened, the width of the guide groove 15 in the front-to-back direction can be reduced, meaning the front and rear pressure plates are closer together. This allows the wedge-shaped portion 20 of the guide rail 2 to move upwards relative to the front and rear pressure plates, so that its end no longer touches the remaining shim or the inner surface of the pressure plate below. Thus, the front and rear wear plates can continue to be used. This extends the service life of the wear plates and reduces the machining accuracy requirements of the scraper guide rail friction pair.

[0039] from Figure 7 As can be seen, the spiral fasteners 131 used to secure the front and rear pressure plates pass through the gaskets 70. To facilitate the removal of the gaskets 70, a U-shaped groove can be made on each spiral fastener 131 on the gasket 70, allowing the spiral fastener 131 to enter and exit the U-shaped groove through its opening. When the spiral fastener 131 is in the installed position and tightened, the front and rear pressure plates clamp the gasket 70, and the spiral fastener 131 is located within the U-shaped groove on the gasket. When it is necessary to remove at least one gasket 70, the spiral fastener 131 is slightly loosened, and then the gasket 70 can be gripped by hand or with a tool and pulled downwards, allowing the spiral fastener 131, still in the installed position, to disengage from the U-shaped groove on the gasket 70, and thus pull the gasket 70 out of the corner unit 10. This design allows for the removal or installation of the gaskets 70 without completely removing the spiral fasteners that secure the front and rear pressure plates together, facilitating the disassembly and assembly of the corner unit 10.

[0040] The front and rear wear plates 60 and 80 are replaceable, for example, when their service life expires. Therefore, the front and rear wear plates can be installed laterally along the corner bracket 10. Figure 5 left and right directions or Figure 6 , 7The wear-resistant plate can be easily inserted into or removed from the guide groove 15 (perpendicular to the drawing), facilitating the replacement of the wear-resistant plate. On the other hand, to prevent the front and rear wear-resistant plates from detaching laterally from the guide groove 15, such as... Figure 5 and 6 As shown, the cornering device 10 may also include side pressure plates 14 mounted on its two sides. The side pressure plates 14 may be detachably mounted on the sides of the cornering device 10, for example, by means of fasteners 141. When installed in place, the side pressure plates 14 can block the front and rear wear plates to prevent them from falling out of the guide groove 15, and when removed, the front and rear wear plates can be installed or replaced.

[0041] The present invention also provides a working machine including the blade connection and guiding mechanism described above.

[0042] Industrial applicability

[0043] The blade connection and guiding mechanism according to the present invention can be applied to various operating machines equipped with blades capable of lateral movement, such as graders, bulldozers, etc.

[0044] When installing the shovel onto the main frame of the working machine using the shovel connection and guiding mechanism according to the present invention, the front and rear pressure plates 13 and 12 of the corner positioner 10 are first fastened together to roughly define the guide grooves 15. First, the lower guide groove 15 is installed for the lower guide rail 2 (pre-fixed to the shovel 1), and then the guide rail 2 is received within the guide groove 15. Then, the upper guide groove 15 is installed for the upper guide rail 2 (also pre-fixed to the shovel 1), and then the guide rail 2 is also received within the guide groove 15. In this way, the shovel 1 is initially connected to the corner positioner 10 and the connected main frame via the two guide rails 2. Next, the front and rear wear-resistant plates 60 and 80 are inserted from the side of the corner positioner 10 into each guide groove 15, and then a side pressure plate 14 is installed on the side of the corner positioner 10 to prevent the wear-resistant plates from coming out of the guide grooves 15. Thus, the installation of the shovel 1 on the main frame of the working machine is completed. When the wear-resistant plate reaches the end of its service life, remove the side pressure plate 14, take out the old wear-resistant plate from the guide groove 15, and insert the new wear-resistant plate.

[0045] In the shovel connection and guiding mechanism according to the present invention, the sliding guide portion of the guide rail is designed with a wedge-shaped part, and the corresponding guide groove in the corner positioner for frictional contact with the guide rail is also designed as a matching wedge-shaped groove. Compared with the existing guide rail and guide groove structure with a rectangular cross-section, this wedge-shaped fit structure provides good guidance when the guide rail moves laterally in the guide groove. Even if the wear plate in the guide groove wears, the guide rail can automatically center and compensate, reducing the gap between the guide rail and the guide groove, thereby improving the movement stability and smoothness of the shovel during lateral movement during operation. The shovel connection and guiding mechanism according to the present invention can also optionally adjust the gap between the guide rail and the guide groove by removing the shims provided in the corner positioner, which not only reduces the machining accuracy requirements of the shovel guide rail friction pair, but also greatly extends the service life of the wear plate and reduces replacement and maintenance costs. In addition, the shovel connection and guiding mechanism according to the present invention is easier to install and remove and replace the wear plate compared with the existing shovel guide rail structure.

[0046] This specification is for illustrative purposes only and should not be expected to limit the scope of the invention in any way. Therefore, those skilled in the art will understand that various modifications can be made to the specific embodiments disclosed without departing from the full and reasonable scope and spirit of the invention. Other aspects, features, and advantages will become apparent from the drawings and the accompanying claims.

Claims

1. A blade connection and guiding mechanism, comprising a guide rail (2) and a cornering device (10), the guide rail being fixedly connected to a blade (1), the cornering device defining a guide groove (15) therein in which the guide rail is slidably received, characterized in that, The sliding guide portion of the guide rail (2) includes a wedge-shaped portion (20) that tapers toward the guide groove (15). The wedge-shaped portion has a first guide rail front guide surface (21f) and a first guide rail rear guide surface (21r) that are angled relative to the horizontal plane and angled relative to each other. The guide groove (15) includes a first guide groove front guide surface (61f) and a first guide groove rear guide surface (81r) that are adapted to slide in contact with the first guide rail front guide surface and the first guide rail rear guide surface, respectively.

2. The blade connection and guiding mechanism according to claim 1, characterized in that, The first guide groove front guide surface (61f) and the first guide groove rear guide surface (81r) are provided by the surfaces of the front wear plate (60) and the rear wear plate (80) respectively disposed in the guide groove (15).

3. The blade connection and guiding mechanism according to claim 2, characterized in that, The front wear plate (60) and the rear wear plate (80) are replaceably inserted into the guide groove (15) along the side of the cornering device (10), the cornering device including a side pressure plate (14) detachably mounted on its side to prevent the front wear plate and the rear wear plate from dislodging laterally from the guide groove (15).

4. The blade connection and guiding mechanism according to claim 2 or 3, characterized in that, The cornering device (10) includes a front pressure plate (13) and a rear pressure plate (12) that together define the guide groove (15), and at least one shim (70) removably disposed between the front pressure plate and the rear pressure plate to adjust the width of the guide groove (15) in the front-rear direction.

5. The blade connection and guiding mechanism according to claim 4, characterized in that, The front pressure plate (13) and the rear pressure plate (12) are fastened together by a spiral fastener (131) to clamp the at least one gasket (70), the gasket having a U-shaped groove that allows the spiral fastener (131) in the installation position to enter and exit.

6. The blade connection and guiding mechanism according to any one of claims 1 to 5, characterized in that, The first guide rail front guide surface (21f) and the first guide rail rear guide surface (21r) are inclined surfaces that extend obliquely forward and obliquely backward from the end of the wedge-shaped portion (20), respectively.

7. The blade connection and guiding mechanism according to claim 6, characterized in that, The inclination angle (α) of the rear guide surface (21r) of the first guide rail relative to the vertical plane r The inclination angle (α) of the front guide surface (21f) of the first guide rail relative to the vertical plane is smaller than that of the guide surface (21f). f ).

8. The blade connection and guiding mechanism according to any one of claims 1 to 7, characterized in that, The angle formed by the front guide surface (21f) and the rear guide surface (21r) of the first guide rail is between 60 degrees and 120 degrees.

9. The blade connection and guiding mechanism according to any one of claims 1 to 8, characterized in that, The sliding guide portion of the guide rail (2) further includes a second guide rail front guide surface (22f) and a second guide rail rear guide surface (22r) that are connected to the first guide rail front guide surface (21f) and the first guide rail rear guide surface (21r) respectively and are both vertically oriented. The guide groove (15) includes a second guide groove front guide surface (62f) and a second guide groove rear guide surface (82r) that are adapted to slide in contact with the second guide rail front guide surface and the second guide rail rear guide surface respectively.

10. The blade connection and guiding mechanism according to claim 9, characterized in that, The rear guide surface (82r) of the second guide groove extends higher in the vertical direction than the front guide surface (62f) of the second guide groove.

11. A type of operating machinery (100), characterized in that... It includes a shovel (1) and a shovel connection and guiding mechanism according to any one of claims 1 to 10.

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