Door opening limiting device, working machine, and method for manufacturing a sliding groove device

Abstract

The application relates to the field of accessory technology of working machines, in particular to a door opening limiting device, a working machine and a production method of a sliding groove device. The door opening limiting device comprises a connecting rod and a sliding groove device, the sliding groove device is provided with a sliding groove structure, one of a door body and a door frame is hinged to the first end of the connecting rod, the first end of the connecting rod has at least two rotation degrees of freedom relative to one of the door body and the door frame, the sliding groove device is fixed to the other one of the door body and the door frame, and the second end of the connecting rod is in sliding fit with the sliding groove structure. The door opening limiting device provided by the application can be flexibly arranged according to the door surface structure and the surrounding space, and the applicability of the door opening limiting device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of accessory technology of working machines, in particular to a door opening limiting device, a working machine and a method for manufacturing a sliding groove device. BACKGROUND

[0002] The door opening limiting device is used to limit the maximum opening degree of the door to prevent the opening degree of the door from being too large. In the prior art, working machines are usually provided with a door opening limiting device, such as excavators, cranes, etc.

[0003] In the prior art, the door opening limiting device usually comprises a connecting rod and a sliding groove, wherein the sliding groove is arranged on a door frame, the first end of the connecting rod is slidably matched with the sliding groove, and the second end is hingedly connected with a door body. During the opening of the door, the connecting rod slides along the sliding groove until it slides to the terminal end of the sliding groove, and the door is limited to continue to open.

[0004] However, in the prior art, the active surface of the connecting rod must be perpendicular to the hinge axis of the door, therefore, the connection position of the door opening limiting device in the prior art has great limitations, and the door opening limiting device cannot be flexibly arranged according to the door surface structure and the arrangement space. SUMMARY

[0005] The present application provides a door opening limiting device, a working machine and a method for manufacturing a sliding groove device, which can be flexibly arranged according to the door surface structure or the arrangement space, and improves the applicability of installing the door opening limiting device.

[0006] The first aspect of the present application provides a door opening limiting device, comprising a connecting rod and a sliding groove device, the sliding groove device is provided with a sliding groove structure, the first end of the connecting rod is hingedly connected with one of a door body and a door frame, and the first end of the connecting rod has at least two rotational degrees of freedom with respect to one of the door body and the door frame, the sliding groove device is fixed on the other one of the door body and the door frame, and the second end of the connecting rod is slidably matched with the sliding groove structure.

[0007] According to the door opening limiting device provided by the present application, one of the door body and the door frame is hingedly connected with a hinge support, and the first end of the connecting rod is hingedly connected with the first end of the hinge support.

[0008] According to the door opening limiting device provided by the present application, the hinge shaft center line of the first end of the connecting rod hingedly connected with the first end of the hinge support is a first axis, the hinge shaft center line of the second end of the hinge support for being hingedly connected with one of the door body and the door frame is a second axis, and the first axis and the second axis are perpendicular.

[0009] The second end of the connecting rod is provided with a bending structure, the bending structure extends into the sliding groove structure and is in sliding fit with the sliding groove structure.

[0010] The second end of the connecting rod and the second end of the hinge support are both provided with a cushion device.

[0011] The sliding groove structure comprises a first groove section and a second groove section, the first groove section is a straight line type groove, the second groove section is arranged at the end of the first groove section, and the first groove section and the second groove section are in communication and are arranged at an included angle.

[0012] The second aspect of the present application provides a working machine comprising a door frame and a door body, the door body is connected with the door frame through a hinge, and the door body and the door frame are provided with the door opening limiting device according to any one of the above.

[0013] The sliding groove device is fixedly arranged on the door body, and the central axis of the sliding groove structure is arranged at an included angle with the axis of the hinge.

[0014] The sliding groove device is arranged in a flat plate structure or a curved plate structure.

[0015] The third aspect of the present application provides a manufacturing method of a sliding groove device, comprising:

[0016] determining the hinge center point P of the hinge support and the connecting rod, the central axis k of the door hinge, and the intersection O of the central axis k and the normal plane of the central axis k passing through the hinge center point P; rotating the hinge center point P around the central axis k by an angle θ to obtain a point P', wherein θ is the maximum opening angle of the door;

[0017] determining the central axis f of the sliding groove device according to the shape of the door or the mounting space of the sliding groove device;

[0018] determining the central axis PQR of the connecting rod when the door is at the maximum opening angle, wherein point Q is located on the central axis f and moves along the central axis f during the opening and closing of the door;

[0019] drawing the central axis P'Q'R' of the connecting rod when the door is closed through the point P', wherein point Q' is located on the central axis f;

[0020] drawing the perpendicular segment MN of the central axis f from point Q, and MQ=NQ=half of the width of the sliding groove device; drawing the perpendicular segment M'N' of the central axis f from point Q', and M'Q'=N'Q'=half of the width of the sliding groove device.

[0021] With the central axis f as a guide line, the surface connecting line segments M'N' and MN is obtained, that is, the shape of the chute device is obtained;

[0022] The chute device is manufactured according to the obtained shape of the chute device.

[0023] Beneficial effects:

[0024] Firstly, the technical scheme provided by the present application comprises a connecting rod and a chute device, the first end of the connecting rod is hingedly connected to one of a door body and a door frame, and the first end of the connecting rod has at least two degrees of rotational freedom relative to the one of the door body and the door frame, the chute device is fixed to the other of the door body and the door frame, and the second end of the connecting rod is in sliding fit with the chute structure. For example, the chute device can be mounted on the door body, and the chute device can be provided as a plane or a curved surface. When the chute device is limited by the door surface and cannot be arranged perpendicularly to the door hinge shaft, the chute device can be provided as a curved surface. The first end of the connecting rod is hingedly connected to the door frame and has at least two degrees of rotational freedom relative to the door frame, so that the sliding of the second end of the connecting rod in the chute device is not limited by the orientation of the chute device, thereby ensuring smooth sliding of the end of the connecting rod in the chute structure. When the chute device can be arranged perpendicularly to the door hinge shaft, the chute device can be provided as a simple plane. When the door is opened or closed, the rotation angle of the connecting rod can be adaptively changed according to the opening angle of the door and the extension shape of the chute structure, thereby ensuring that the door can be normally opened and closed. When the door is opened to a preset angle, the connecting rod slides to the end of the chute structure along the chute structure, and the sliding of the connecting rod is limited under the limiting action of the chute structure, thereby limiting the opening of the door body.

[0025] Secondly, in a further scheme of the present application, the chute structure comprises a first slot section and a second slot section, the first slot section is a straight line type slot, the second slot section is arranged at the end of the first slot section, and the first slot section and the second slot section are in communication, that is, the first slot section and the second slot section constitute an L-shaped structure. As the door body is opened, the connecting rod slides along the first slot section of the chute structure, and when the door body is opened to a preset opening, the end of the connecting rod enters the second slot section at the end of the first slot section. Under the limiting action of the second slot section, the reverse displacement of the connecting rod along the first slot section is limited, thereby enabling the door body to be maintained at the preset opening. When it is necessary to close the door body, the end of the connecting rod can be manually displaced in the reverse direction into the first slot section, thereby removing the limitation on the door body and enabling the door body to be closed. During the closing process of the door body, the connecting rod is reversely displaced along the first slot section.

[0026] Thirdly, the application also provides a working machine, which comprises a door frame and a door body, the door body is connected with the door frame through a hinge, and the door body and the door frame are provided with the door opening limiting device according to any one of the above.

[0027] Fourthly, in a further technical scheme, the sliding groove device is provided as a flat plate structure or a curved plate structure, that is, the sliding groove device can be provided as a plane or a curved surface, when the sliding groove device is limited by the door profile and cannot be arranged vertically with the door hinge shaft, the sliding groove device can be provided as a curved surface, the first end of the connecting rod has a multi-degree-of-freedom rotation adjustment function relative to the door frame, and the second end of the connecting rod can slide in the sliding groove device without being limited by the orientation of the sliding groove device, so as to ensure smooth sliding of the end of the connecting rod in the sliding groove structure. When the sliding groove device can be arranged vertically with the door hinge shaft, the sliding groove device can be provided as a simple plane. Therefore, the sliding groove device provided by the scheme can be matched with the door body or the door frame, and the applicability of the door opening limiting device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0029] Figure 1 is a state diagram of the door opening limiting device when the door body is in a closed state in the embodiment of the application;

[0030] Figure 2 is a state diagram of the door opening limiting device when the door body is in an open state in the embodiment of the application;

[0031] Figure 3 is a connecting rod structure diagram of the door opening limiting device in the embodiment of the application;

[0032] Figure 4 is a sliding groove device structure diagram of the door opening limiting device in the embodiment of the application;

[0033] Figure 5 is a structure parameter diagram for determining the shape of the sliding groove device in the embodiment of the application;

[0034] In the drawings:

[0035] 11, hinge support; 12, connecting rod; 13, sliding groove device; 14, pad device; 15, door frame; 16, door body; 17, elastic split pin; 111, first end of hinge support; 112, second end of hinge support; 121, first end of connecting rod; 122, second end of connecting rod; 131, first slot section; 132, second slot section. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0037] The cab or other cabin of a working machine is provided with a switchable door. In order to limit the opening degree of the door body, a door opening limiting device is usually arranged between the door body and the door frame. In the related art, the door opening limiting device is composed of a connecting rod and a sliding groove. The sliding groove is fixed on the door frame, one end of the connecting rod is hinged to the door body, and the other end is in sliding cooperation with the sliding groove. During the opening of the door body, the connecting rod slides along the sliding groove until the end of the sliding groove, the door body cannot continue to open due to the pulling force of the connecting rod, thereby limiting the opening degree of the door body. In the related art, the activity track of the connecting rod is a plane, which cannot adapt to the profile change of the door frame or the door body, and has great installation limitations.

[0038] In view of this, please refer to Figures 1-5 The present embodiment provides a door opening limiting device, which comprises a connecting rod 12 and a sliding groove device 13. The sliding groove device 13 is provided with a sliding groove structure. The first end 121 of the connecting rod is hinged to one of the door body 16 and the door frame 15, and the first end 121 of the connecting rod has at least two rotational degrees of freedom relative to one of the door body 16 and the door frame 15. The sliding groove device 13 is fixed on the other one of the door body 16 and the door frame 15, and the second end 122 of the connecting rod is in sliding cooperation with the sliding groove structure.

[0039] In order to realize that the first end 121 of the connecting rod is hinged to one of the door body 16 and the door frame 15, and the first end 121 of the connecting rod has at least two rotational degrees of freedom relative to one of the door body 16 and the door frame 15, in a further embodiment, a hinge support 11 is hinged to one of the door body 16 and the door frame 15, and the first end 121 of the connecting rod is hinged to the first end 111 of the hinge support.

[0040] In some embodiments, the hinge support 11 and the connecting rod 12 are respectively rod-shaped members, and the sliding groove device 13 can be a plate-shaped member with a sliding groove structure formed thereon. Specifically, the sliding groove device 13 can be a metal plate formed by a stamping process.

[0041] The first end 121 of the connecting rod is hingedly connected to the first end 111 of the hinge support, specifically, the hingedly connection can be achieved by a hinge shaft penetrating both of them, so that the hinge support 11 and the connecting rod 12 can rotate relative to each other around the first axis. The second end 122 of the connecting rod cooperates with the sliding groove structure of the sliding groove device 13, and the second end 122 of the connecting rod forms a sliding pair with the sliding groove structure, that is, the second end 122 of the connecting rod can slide and displace along the sliding groove structure under the constraint of the sliding groove structure.

[0042] The second end 112 of the hinge support is used to be hingedly connected to one of the door body 16 and the door frame 15, and the sliding groove device 13 is used to be fixed to the other one of the door body 16 and the door frame 15. In one embodiment, the second end 112 of the hinge support is hingedly connected to the door frame 15, and the sliding groove device 13 is arranged on the door body 16, specifically, the sliding groove device 13 can be connected to the door body 16 by bolts or pins, or by welding. Of course, in other embodiments, the second end 112 of the hinge support can be hingedly connected to the door body 16, and the sliding groove device 13 is arranged on the door frame 15.

[0043] The following content is described by taking the sliding groove device 13 arranged on the door body 16 and the second end 112 of the hinge support hingedly connected to the door frame 15 as an example. The sliding groove device 13 can be mounted on the door body 16, and the sliding groove device 13 can be arranged according to the profile of the door body 16. The sliding groove device 13 can be arranged as a planar structure or a curved structure. When the sliding groove device 13 is limited by the door profile and cannot be arranged perpendicular to the door hinge shaft, the sliding groove device 13 can be arranged as a curved structure. Since the hinge support 11 is rotationally connected to the door frame, and the hinge support 11 and the connecting rod 12 are rotationally connected, the second end of the connecting rod 12 has a multi-degree-of-freedom adjustment function relative to the door frame. The sliding of the second end of the connecting rod 12 in the sliding groove device 13 is not limited by the orientation of the sliding groove device 13, thereby ensuring smooth sliding of the end of the connecting rod 12 in the sliding groove structure. When the sliding groove device 13 can be arranged perpendicular to the door hinge shaft, the sliding groove device 13 can be arranged as a simple planar structure.

[0044] When the door is opened, the hinge support 11 is rotatably connected with the door frame 15, and the hinge support 11 and the connecting rod 12 are rotatably connected, so that the rotation angle of the hinge support 11 and the connecting rod 12 can be adaptively adjusted according to the opening angle of the door and the extension shape of the sliding groove structure, thereby ensuring that the door can be normally opened and closed. When the door is opened to a preset angle, the connecting rod 12 slides to the end of the sliding groove structure, and the sliding of the connecting rod 12 is limited under the limitation of the sliding groove structure, thereby limiting the opening of the door body 16.

[0045] The sliding groove device 13 provided in the embodiment can be designed according to the profile of the door body 16. When the second end 112 of the hinge support, the first end 111 of the hinge support and the first end 121 of the connecting rod, and the second end 122 of the connecting rod and the sliding groove structure all have a rotation freedom, even if the sliding groove device 13 is designed as a curved surface, the hinge support 11 and the connecting rod 12 will not be stuck during the opening of the door, and the problem of the hinge support 11 and the connecting rod 12 will not be stuck until the second end 122 of the connecting rod is displaced to the terminal end of the sliding groove structure, and the opening of the door body 16 is limited.

[0046] Therefore, the door opening limiting device provided in the embodiment can be applied to door body 16 or door frame 15 structures of various profiles, and can be flexibly arranged according to the door profile structure or the arrangement space, thereby improving the operability of installing the door opening limiting device.

[0047] In a further embodiment, the hinge shaft center line of the first end 121 of the connecting rod and the first end 111 of the hinge support is a first axis, and the hinge shaft center line of the second end 112 of the hinge support and one of the door body 16 and the door frame 15 is a second axis, and the first axis and the second axis are perpendicular.

[0048] In the embodiment, the rotation pair formed between the first end 121 of the connecting rod and the first end 111 of the hinge support, and the rotation pair formed between the second end 112 of the hinge support and one of the door body 16 and the door frame 15, so that the second end of the connecting rod has a multi-degree-of-freedom adjustment function relative to the door frame, and the sliding of the second end of the connecting rod in the sliding groove device 13 can not be limited by the orientation of the sliding groove device 13, so that the sliding groove device can be flexibly arranged according to the door profile structure and the surrounding space.

[0049] In a further embodiment, the first end 121 of the connecting rod and the first end 111 of the hinge support are respectively provided with a U-shaped seat, and the U-shaped seat of the connecting rod 12 and the U-shaped seat of the hinge support 11 are connected by a hinge shaft. Specifically, the two U-shaped seats can be sleeved with each other, and the two U-shaped seats are provided with hinge holes at corresponding positions, and the hinge shaft is inserted into the hinge holes, so that the hinge support 11 and the connecting rod 12 are hingedly connected.

[0050] In further embodiments, the second end 122 of the connecting rod is provided with a bent structure which extends into the sliding groove structure and is in sliding fit with the sliding groove structure. The main body of the connecting rod 12 is a straight rod structure. In order to facilitate the sliding connection with the sliding groove structure, the end of the connecting rod 12 is bent, and the bent part extends into the sliding groove structure.

[0051] In some embodiments, in order to make the bent structure of the connecting rod 12 slide smoothly in the sliding groove structure, a roller can be sleeved on the bent structure of the connecting rod 12, which can roll in the sliding groove structure. The sliding friction between the bent structure and the sliding groove structure is converted into rolling friction through the roller, which improves the smoothness of the sliding of the bent structure in the sliding groove structure.

[0052] In further embodiments, the second end 122 of the connecting rod and the second end 112 of the hinge support are both provided with a pad device 14. The pad device 14 can be a circular gasket fixedly sleeved on the second end 122 of the connecting rod and the second end 112 of the hinge support, and the pad can be made of metal. The hinge support 11 and the door frame 15 can be rotatably connected together through the following structure. The door frame 15 is provided with a hinge hole, the hinge support 11 is inserted into the hinge hole, and the end of the hinge support 11 passing through the hinge hole is provided with an elastic split pin 17, which can prevent the hinge support 11 from being separated from the hinge hole. The pad device 14 and the elastic split pin 17 provided on the hinge support 11 are located on one side of the hinge hole, respectively, which can limit the axial movement of the hinge support 11 in the hinge hole. The second end 122 of the connecting rod extends into the sliding groove structure, and the pad device 14 is fixedly provided on the connecting rod 12, which can prevent the connecting rod 12 from moving in the depth direction of the sliding groove structure.

[0053] In further embodiments, the sliding groove structure includes a first groove section 131 and a second groove section 132. The first groove section 131 is a straight line type groove, and the second groove section 132 is provided at the end of the first groove section 131, and the first groove section 131 and the second groove section 132 are connected in communication. The length of the second groove section 132 can be relatively small, so that the second end 122 of the connecting rod can enter.

[0054] It should be noted that the second end 122 of the connecting rod can slide into the second groove section 132 along the first groove section 131, and the second groove section 132 is arranged at an angle with the first groove section 131. Further, the first groove section 131 and the second groove section 132 can be perpendicular, of course, they can also be at other angles, such as 100°, 110°, etc. When the second end 122 of the connecting rod slides from the first groove section 131 into the second groove section 132, the connecting rod 12 is locked in the second groove section 132, thereby keeping the door body 16 in an open state.

[0055] When it is necessary to close the door 16, the second end 122 of the connecting rod can be slid from the second groove 132 into the first groove 131 by manual operation, which will release the limiting effect on the door 16 and allow the door 16 to be closed.

[0056] An embodiment of the present invention also provides a working machine, including a door frame 15 and a door body 16. The door body 16 is connected to the door frame 15 by a hinge, and a door opening limit device as described in any of the above embodiments is provided between the door body 16 and the door frame 15.

[0057] Specifically, in the work machinery provided in this embodiment, a sliding groove device 13 is installed on the door body 16. The sliding groove device 13 is provided with a sliding groove structure. The first end 121 of the connecting rod is hinged to the first end 111 of the hinge support, and the second end 122 of the connecting rod is slidably engaged with the sliding groove structure. The second end 112 of the hinge support is hinged to the door frame 15. The center line of the hinge axis where the first end 121 of the connecting rod is hinged to the first end 111 of the hinge support is the first axis line, and the center line of the hinge axis where the second end 112 of the hinge support is hinged to one of the door body 16 and the door frame 15 is the second axis line. The first axis line and the second axis line are perpendicular to each other.

[0058] The second end 122 of the connecting rod is provided with a bending structure that extends into the sliding groove structure and slides in cooperation with it. Both the second end 122 of the connecting rod and the second end 112 of the hinge support are provided with a circular pad device 14.

[0059] The chute structure includes a first chute section 131 and a second chute section 132. The first chute section 131 is a straight chute, and the second chute section 132 is located at the end of the first chute section 131. The first chute section 131 and the second chute section 132 are connected and are arranged at an angle.

[0060] With this configuration, the operating machinery provided in this embodiment can flexibly arrange the door opening limiting device according to the door surface structure or layout space. The derivation process of this beneficial effect is largely similar to the derivation process of the beneficial effect of the door opening limiting device described above, and will not be repeated here.

[0061] In a further embodiment, the sliding groove device 13 is fixedly mounted on the door body 16, and the central axis of the sliding groove device and the axis of the hinge are arranged in a "V" shape. It should be noted that the central axis of the sliding groove device and the axis of the hinge can be coplanar straight lines or skew straight lines. The movement of the door opening limiting mechanism provided in this embodiment is spatial movement. The central axis of the sliding groove device and the axis of the hinge can intersect or not intersect, which is mainly determined by the arrangement position of the sliding groove device. The sliding groove device 13 is configured as a flat plate structure or a curved plate structure. The shape of the sliding groove device 13 can be determined in the following way:

[0062] P is the hinge center of the hinge support 11 and the connecting rod 12, k is the door hinge center axis, o is the intersection of the axis k and the perpendicular plane of the axis k passing through the point P, the point P rotates by an angle of theta around the axis k to obtain P', and theta is the maximum opening angle of the door. F is the center axis of the sliding groove device 13 (the center axis determines the arrangement position of the sliding groove device 13, and the axis direction can be determined according to the shape of the door body 16 or the installation space of the sliding groove device 13), PQR is the center axis of the connecting rod 12 when the door is at the maximum opening angle, the point Q is located on the axis f, and the point Q moves along the axis f during the opening and closing of the door. The center axis P'Q'R' of the connecting rod 12 when the door is closed is drawn through the point P', and Q' is located on the axis f. The perpendicular segment MN of the axis f is drawn through the point P', and MQ=NQ=half of the width of the sliding groove device 13. The perpendicular segment M'N' of the axis f is drawn through the point Q', and M'Q'=N'Q'=half of the width of the sliding groove device 13. The surface of the connecting line segments M'N' and MN is drawn with the axis f as the guide line, that is, the shape of the sliding groove device 13 is obtained. After the shape of the sliding groove device 13 is determined, the sliding groove device 13 can be processed. The sliding groove device thus produced can be flexibly arranged according to the door surface structure or the arrangement space, and the applicability of the door opening limiting device is improved.

[0063] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0064] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0065] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; and although the present application has been described in detail with reference to the foregoing embodiments, it should be appreciated by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for manufacturing a chute device, characterized in that, The sliding groove device (13) is slidably fitted with a connecting rod (12). The sliding groove device (13) is provided with a sliding groove structure. The first end (121) of the connecting rod is hinged to the first end (111) of the hinge support. The second end (112) of the hinge support is used to hinge to one of the door body (16) and the door frame (15). The sliding groove device (13) is fixed to the other of the door body (16) and the door frame (15). The second end (122) of the connecting rod is provided with a bending structure. The bending structure extends into the sliding groove structure and is slidably fitted with the sliding groove structure. The method includes: Determine the hinge center point P of the hinge support and connecting rod, the central axis k of the door hinge, and the intersection point O of the central axis k and the vertical plane passing through the hinge center point P and perpendicular to the central axis k; rotate the hinge center point P around the central axis k by an angle θ to obtain point P', where θ is the maximum opening angle of the door. Determine the central axis f of the sliding track device based on the shape of the door or the installation space of the sliding track device; wherein the central axis of the sliding track structure is set at an angle to the axis of the hinge. When the maximum opening angle of the door is determined, the central axis PQR of the connecting rod is determined, wherein point Q is located on the central axis f, and point Q moves along the central axis f during the opening and closing of the door; Draw the central axis P'Q'R' of the connecting rod when the door is closed, passing through point P', where point Q' is located on the central axis f; Draw a perpendicular line segment MN from point Q to line segment PQ and the central axis f, where MQ = NQ = half the width of the chute device. Draw a perpendicular line segment M'N' from point Q' to line segment P'Q' and the axis f, where M'Q' = N'Q' = half the width of the chute device. Using the central axis f as a guide line, draw the surface connecting line segments M'N' and MN to obtain the shape of the chute device; Based on the shape of the obtained chute device, manufacture the chute device.

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