Leveling mechanism and boarding bridge

Abstract

The utility model relates to the technical field of boarding bridges, in particular to a leveling mechanism and a boarding bridge. The leveling mechanism comprises a leveling wheel, a connecting shaft, an encoder and a protective cover, the leveling wheel is connected with the encoder through the connecting shaft, and the protective cover is arranged outside the encoder in a covering mode; a first protection part is arranged on the outer surface of the protection cover, and at least part of the first protection part is located on the side, away from the encoder, of the top of the protection cover; a second protection part is arranged on the circumferential surface of the connecting shaft and located between the leveling wheel and the encoder. When liquid such as rainwater falls down from the upper direction of the protective cover, the first protective part can play a certain blocking role, and the liquid such as rainwater entering the space between the leveling wheel and the encoder is reduced; meanwhile, as the second protection part is located between the leveling wheel and the encoder, if liquid enters the space between the leveling wheel and the encoder, the liquid is further blocked by the second protection part, the possibility that the liquid enters the encoder is reduced, and the possibility that the encoder is damaged is further reduced.

Description

Technical Field

[0001] The present application relates to the technical field of boarding bridges, and in particular to a leveling mechanism and a boarding bridge. Background Art

[0002] In the related art, the boarding bridge uses a leveling mechanism to detect the change in the height of the aircraft, thereby adjusting the height of the boarding bridge's receiving port to ensure that the relative height between the receiving port floor and the aircraft threshold remains unchanged. One of the core components of the leveling mechanism is the encoder. The existing leveling mechanism does not fully consider the protection of the encoder. When encountering rainy and snowy weather, water can easily enter between the leveling wheel and the encoder, and then may enter the encoder, causing damage to the encoder, posing a safety hazard. Utility Model Content

[0003] The purpose of the present application is to provide a leveling mechanism and an aircraft boarding bridge to reduce the risk of encoder damage.

[0004] Based on the above-mentioned purpose, the present application provides a leveling mechanism, including a leveling wheel, a connecting shaft, an encoder and a protective cover, the leveling wheel is connected to the encoder through the connecting shaft, and the protective cover is arranged on the outside of the encoder; the outer surface of the protective cover is provided with a first protective portion, and at least a part of the first protective portion is located on the side of the top of the protective cover away from the encoder; the circumferential surface of the connecting shaft is provided with a second protective portion, and the second protective portion is located between the leveling wheel and the encoder.

[0005] In one embodiment of the present application, along the axial direction of the leveling wheel, a wheel edge of the leveling wheel close to the encoder is located between the encoder and the first protective portion.

[0006] In one embodiment of the present application, the leveling wheel includes an outer wheel portion and an inner support portion, the inner support portion is connected to the inner annular surface of the outer wheel portion, and the inner support portion is installed at an end of the connecting shaft away from the encoder; the maximum thickness of the inner support portion is smaller than the maximum thickness of the outer wheel portion, so that an accommodation space is formed between the wheel edge of the outer wheel portion close to the encoder and the inner support portion, and the first protective portion is located in the accommodation space.

[0007] In one embodiment of the present application, the connecting shaft is provided with a positioning portion, and the inner support portion is provided with a positioning matching portion, and the positioning matching portion cooperates with the positioning portion so that the axis of the connecting shaft coincides with the axis of the leveling wheel.

[0008] In one embodiment of the present application, the second guarding portion is located on a side of the first guarding portion close to the encoder.

[0009] In one embodiment of the present application, the protective cover has an open side, and the open side faces the leveling wheel; one end of the connecting shaft is connected to the encoder, and the other end of the connecting shaft extends from the open side and is connected to the leveling wheel;

[0010] The first protection part is connected to the end surface of the opening side; or the first protection part is staggered with the end surface of the opening side.

[0011] In one embodiment of the present application, the protective cover is provided with a third protective portion, at least part of the third protective portion is located inside the protective cover, and a gap is provided between the third protective portion and the circumferential surface of the connecting shaft; along the axial direction of the connecting shaft, the third protective portion is located on the side of the second protective portion away from the encoder.

[0012] In one embodiment of the present application, a dimension of the second protection portion along the radial direction of the connecting shaft is larger than a gap between the third protection portion and a circumferential surface of the connecting shaft.

[0013] In one embodiment of the present application, the first guarding portion and the third guarding portion are both plate-like structures, and the plate surfaces of the first guarding portion and the third guarding portion are coplanar; or, along the axial direction of the connecting shaft, the first guarding portion is located between the third guarding portion and the second guarding portion.

[0014] Based on the above purpose, the present application also provides a boarding bridge, including the leveling mechanism.

[0015] The beneficial effects of this application are mainly:

[0016] In the leveling mechanism provided by the present application, the protective cover is arranged on the outside of the encoder, which plays a certain protective role for the encoder. Since the outer surface of the protective cover is provided with a first protective part, at least part of the first protective part is located on the top side of the protective cover away from the encoder. When liquid such as rainwater falls from the top and / or side of the protective cover, the first protective part can play a certain blocking role, reducing the entry of liquid such as rainwater into the space between the leveling wheel and the encoder; at the same time, by providing a second protective part on the circumferential surface of the connecting shaft, the second protective part is located between the leveling wheel and the encoder. If liquid enters between the leveling wheel and the encoder, the part of the liquid will be further blocked by the second protective part, reducing the possibility of liquid entering the encoder, thereby reducing the possibility of damage to the encoder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the structure of the leveling mechanism provided in an embodiment of the present application;

[0019] Figure 2 An exploded view of the leveling mechanism provided in an embodiment of the present application;

[0020] Figure 3 A front view of the leveling mechanism provided in an embodiment of the present application;

[0021] Figure 4 for Figure 3 A cross-sectional view along line AA;

[0022] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0023] Figure 6 Another schematic diagram of the internal structure of the leveling mechanism provided in the embodiment of the present application;

[0024] Figure 7 A third internal structure schematic diagram of the leveling mechanism provided in an embodiment of the present application.

[0025] The following are the descriptions of the reference numerals:

[0026] 1-leveling wheel; 11-outer wheel; 111-wheel edge; 12-inner support; 121-positioning hole; 2-connecting shaft; 21-second protection part; 22-positioning column; 3-encoder; 4-protective cover; 41-first protection part; 42-top plate; 421-first mounting edge; 422-second mounting edge; 43-back plate; 44-side plate; 45-third protection part; 5-swing arm; 51-mounting plate; 6-outer cover. DETAILED DESCRIPTION

[0027] The technical solution of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0028] In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] See also Figures 1 to 7 As shown, this embodiment provides a leveling mechanism, including a leveling wheel 1, a connecting shaft 2, an encoder 3 and a protective cover 4, the leveling wheel 1 is connected to the encoder 3 through the connecting shaft 2, and the protective cover 4 is arranged on the outside of the encoder 3; the outer surface of the protective cover 4 is provided with a first protective portion 41, and at least part of the first protective portion 41 is located on the top side of the protective cover 4 away from the encoder 3; the circumferential surface of the connecting shaft 2 is provided with a second protective portion 21, and the second protective portion 21 is located between the leveling wheel 1 and the encoder 3.

[0031] In the leveling mechanism provided in the present embodiment, the protective cover 4 is arranged on the outside of the encoder 3, which plays a certain protective role for the encoder 3. Since the outer surface of the protective cover 4 is provided with a first protective portion 41, at least a part of the first protective portion 41 is located on the top of the protective cover 4 away from the encoder 3. When liquid such as rainwater falls from the top and / or side of the protective cover 4, the first protective portion 41 can play a certain blocking role, reducing the entry of liquid such as rainwater into the space between the leveling wheel 1 and the encoder 3; at the same time, by providing a second protective portion 21 on the circumferential surface of the connecting shaft 2, the second protective portion 21 is located between the leveling wheel 1 and the encoder 3. If liquid enters between the leveling wheel 1 and the encoder 3, the part of the liquid will be further blocked by the second protective portion 21, thereby reducing the possibility of liquid entering the encoder 3, thereby reducing the possibility of damage to the encoder 3.

[0032] In one embodiment, see Figure 4 As shown, along the axial direction of the leveling wheel 1 , the wheel edge 111 of the leveling wheel 1 close to the encoder 3 is located between the encoder 3 and the first protection portion 41 .

[0033] Specifically, the leveling wheel 1 has two opposite wheel edges 111, which are annular, and the annular surface between the two wheel edges 111 is the wheel surface of the leveling wheel 1; along the axial direction of the leveling wheel 1, one wheel edge 111 is close to the encoder 3, and the other wheel edge 111 is far away from the encoder 3. Since the wheel edge 111 close to the encoder 3 is located between the encoder 3 and the first protective portion 41, when rain falls, the first protective portion 41 can better prevent rain from entering between the leveling wheel 1 and the encoder 3.

[0034] In one embodiment, see Figure 2 As shown, the leveling wheel 1 includes an outer wheel portion 11 and an inner support portion 12, the outer wheel portion 11 is used to contact the aircraft, the inner support portion 12 is connected to the inner annular surface of the outer wheel portion 11, and the inner support portion 12 is installed at the end of the connecting shaft 2 away from the encoder 3; the maximum thickness of the inner support portion 12 is less than the maximum thickness of the outer wheel portion 11, so that an accommodation space is formed between the wheel edge 111 of the outer wheel portion 11 close to the encoder 3 and the inner support portion 12, and the first protective portion 41 is located in the accommodation space.

[0035] Exemplarily, the inner support portion 12 is a circular plate-shaped structure, the maximum thickness of the outer wheel portion 11 can be the vertical distance between the two wheel edges 111, and the inner support portion 12 is located in the middle of the outer wheel portion 11, see Figure 4 As shown, an accommodating space is formed between the wheel edge 111 of the outer wheel portion 11 close to the encoder 3 and the surface of the inner support portion 12 close to the encoder 3, and the first protective portion 41 is located in the accommodating space, so that the distance between the first protective portion 41 and the inner support portion 12 is smaller, and the upward opening formed between the first protective portion 41 and the inner support portion 12 is blocked by the outer wheel portion 11. When rain falls vertically, it can basically be blocked outside the first protective portion 41. When rain falls obliquely downward under the action of wind, even if some rain enters from the gap between the first protective portion 41 and the inner annular surface of the outer wheel portion 11, the second protective portion 21 can also block the rain from entering the encoder 3. Therefore, the cooperation of the first protective portion 41 and the second protective portion 21 realizes the dual protection effect on the encoder 3.

[0036] In this embodiment, along the radial direction of the leveling wheel 1 , the first protection portion 41 is located between the inner annular surface of the outer wheel portion 11 and the connecting shaft 2 .

[0037] In this embodiment, the second protection portion 21 is an annular plate structure. During the rotation of the connecting shaft 2 , the second protection portion 21 can always prevent rainwater from entering the encoder 3 .

[0038] In one embodiment, the connecting shaft 2 is provided with a positioning portion, and the inner support portion 12 is provided with a positioning matching portion, and the positioning matching portion matches with the positioning portion so that the axis of the connecting shaft 2 coincides with the axis of the leveling wheel 1 .

[0039] In some embodiments, see Figure 2 As shown, the positioning portion is a positioning column 22, and the positioning matching portion is a positioning hole 121. Schematically, the axis of the positioning column 22 coincides with the axis of the connecting shaft 2, and the axis of the positioning hole 121 coincides with the axis of the inner support portion 12. During installation, the positioning column 22 is inserted into the positioning hole 121, and the inner support portion 12 is installed on the connecting shaft 2 using fasteners. Schematically, the connecting shaft 2 is provided with a threaded hole, and the inner support portion 12 is provided with a through hole. The fastener can be a bolt, which passes through the through hole and is connected to the threaded hole.

[0040] In other embodiments, the positioning portion may be a positioning hole, and the positioning matching portion may be a positioning column.

[0041] In one embodiment, see Figure 4 As shown, the second protective portion 21 is located on the side of the first protective portion 41 close to the encoder 3, that is, along the axial direction of the leveling wheel 1, the distance between the second protective portion 21 and the inner supporting portion 12 is greater than the distance between the first protective portion 41 and the inner supporting portion 12. When rainwater enters from the gap between the first protective portion 41 and the inner supporting portion 12, it will basically fall on the side of the second protective portion 21 away from the encoder 3, thereby ensuring that the second protective portion 21 can effectively block rainwater from entering the encoder 3.

[0042] In one embodiment, the protective cover 4 has an open side, which faces the leveling wheel 1 ; one end of the connecting shaft 2 is connected to the encoder 3 , and the other end of the connecting shaft 2 extends from the open side and is connected to the leveling wheel 1 .

[0043] For example, see Figure 1 , Figure 2 and Figure 4 As shown, the protective cover 4 includes a top plate 42, a back plate 43 and side plates 44 located on both sides of the top plate 42. The top plate 42 can be an arc-shaped plate to match the circumferential surface of the encoder 3. The opening side is opposite to the back plate 43. Figure 1 As shown, the leveling mechanism further includes a swing arm 5, the swing arm 5 is provided with a mounting plate 51, and the protective cover 4 is mounted on the mounting plate 51. Exemplarily, the back plate 43 is connected to the mounting plate 51 by fasteners, and the fasteners may include bolts and nuts.

[0044] In one embodiment, see Figure 4 As shown, the lower surface of the top plate 42 is provided with a first mounting edge 421, and the encoder 3 is mounted on the first mounting edge 421 by a fastener, and the fastener can be a bolt. Exemplarily, the first mounting edge 421 is provided with a mounting hole, and the encoder 3 is provided with a threaded hole, and the bolt passes through the mounting hole and is connected with the threaded hole on the encoder 3.

[0045] In one possible design, see Figure 4As shown, the first protection portion 41 is connected to the end surface of the opening side.

[0046] The first protective portion 41 extends along the contour of the opening side, and includes a first plate portion and a second plate portion and a third plate portion respectively located on both sides of the first plate portion. The first plate portion is connected to the top plate 42, and the portion of the first plate portion higher than the top plate 42 is the portion of the first protective portion 41 located on the top side of the protective cover 4 away from the encoder 3; the second plate portion and the third plate portion are respectively connected to the two side plates 44.

[0047] Exemplarily, the first plate portion, the second plate portion and the third plate portion are integrally formed, and the first protection portion 41 is a plate-like structure. The first protection portion 41 is generally a U-shaped flat plate structure.

[0048] Of course, the first protection portion 41 may also be entirely located on the top of the protection cover 4 away from the encoder 3 .

[0049] Exemplarily, the first protection portion 41 is welded to the end surface of the opening side.

[0050] In another possible design, see Figure 6 As shown, the first protection portion 41 may also be disposed offset from the end surface of the opening side.

[0051] In one embodiment, see Figure 2 and Figure 4 As shown, the protective cover 4 is provided with a third protective portion 45, and at least a part of the third protective portion 45 is located inside the protective cover 4. A gap is set between the third protective portion 45 and the circumferential surface of the connecting shaft 2 to ensure that the connecting shaft 2 will not contact the third protective portion 45 during rotation, thereby avoiding friction resistance and wear; along the axial direction of the connecting shaft 2, the third protective portion 45 is located on the side of the second protective portion 21 away from the encoder 3, which can play a good blocking role and further reduce the possibility of rainwater flowing to the encoder 3.

[0052] In one embodiment, see Figure 5 As shown, a dimension w of the second protection portion 21 along the radial direction of the connecting shaft 2 is larger than a gap d between the third protection portion 45 and the circumferential surface of the connecting shaft 2 .

[0053] When rainwater flows from the gap between the third protective part 45 and the circumferential surface of the connecting shaft 2 to the second protective part 21, since the width of the second protective part 21 is greater than the gap between the third protective part 45 and the circumferential surface of the connecting shaft 2, the rainwater can be effectively blocked, further reducing the possibility of rainwater flowing to the encoder 3.

[0054] In one possible design, see Figure 2 and Figure 4As shown, the first protection part 41 and the third protection part 45 are both plate-shaped structures, and the plate surfaces of the first protection part 41 and the third protection part 45 are coplanar. Exemplarily, the first protection part 41 and the third protection part 45 are integrally formed. In this possible design, the third protection part 45 is entirely located inside the protective cover 4.

[0055] In another possible design, see Figure 6 As shown, along the axial direction of the connecting shaft 2, the first protective portion 41 is located between the third protective portion 45 and the second protective portion 21, so that the distance between the third protective portion 45 and the inner support portion 12 is smaller, further reducing the entry of rainwater between the encoder 3 and the leveling wheel 1. In this other possible design, the third protective portion 45 is entirely located inside the protective cover 4.

[0056] Of course, see Figure 7 As shown, one end of the third protection portion 45 close to the first protection portion 41 may also extend to the outside of the protection cover 4, which can further enhance the blocking effect.

[0057] It should be noted that in order to facilitate the installation of the encoder in the protective cover 4, the third protective part 45 is provided with a through hole, which is aligned with the mounting hole on the first mounting edge 421. The bolt enters between the first mounting edge 421 and the third protective part 45 through the through hole, making it convenient to use a tool (for example, a screwdriver) to connect the bolt to the first mounting edge 421 and the encoder 3.

[0058] In order to enhance the protective effect of the third protective part 45, after installation, a plugging member may be used to plug the through hole. For example, the plugging member may be a rubber plug.

[0059] Of course, without affecting the installation of the encoder, the third protection portion 45 may not reserve a through hole.

[0060] In one embodiment, see Figure 1 As shown, the leveling mechanism further includes an outer cover 6, which is mounted on the protective cover 4. A portion of the leveling wheel 1 is covered in the outer cover 6 to protect the leveling wheel 1 and prevent pinching of the hand.

[0061] For example, see Figure 4 As shown, the upper surface of the top plate 42 of the protective cover 4 is provided with a second mounting edge 422, which is located on a side of the first protective portion 41 away from the leveling wheel 1, and the outer cover 6 is connected to the second mounting edge 422 via fasteners. The fasteners may include bolts and nuts.

[0062] It should be noted that the structures of the outer cover 6 and the swing arm 5 and the working principle of the leveling mechanism should be understandable to those skilled in the art, and are well known and easy to implement for those skilled in the art, so they are not described in detail in this embodiment.

[0063] This embodiment also provides a boarding bridge, including the leveling mechanism provided in this embodiment.

[0064] The boarding bridge provided in this embodiment uses the leveling mechanism provided in this embodiment. When liquid such as rainwater falls from the top and / or side of the protective cover 4, the first protective portion 41 can play a certain blocking role, thereby reducing the liquid from entering between the leveling wheel 1 and the encoder 3; at the same time, by providing a second protective portion 21 on the circumferential surface of the connecting shaft 2, the second protective portion 21 is located between the leveling wheel 1 and the encoder 3. If liquid enters between the leveling wheel 1 and the encoder 3, the part of the liquid will be further blocked by the second protective portion 21, thereby reducing the possibility of liquid entering the encoder 3, thereby reducing the possibility of damage to the encoder 3, thereby ensuring the normal operation of the leveling mechanism and ensuring the safety of the aircraft reception process.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A leveling mechanism, characterized in that: It includes a leveling wheel, a connecting shaft, an encoder and a protective cover, wherein the leveling wheel is connected to the encoder through the connecting shaft, and the protective cover is arranged on the outside of the encoder; a first protective portion is arranged on the outer surface of the protective cover, and at least a part of the first protective portion is located on the top side of the protective cover away from the encoder; a second protective portion is arranged on the circumferential surface of the connecting shaft, and the second protective portion is located between the leveling wheel and the encoder.

2. The leveling mechanism according to claim 1, characterized in that: Along the axial direction of the leveling wheel, a wheel edge of the leveling wheel close to the encoder is located between the encoder and the first protective portion.

3. The leveling mechanism according to claim 1, characterized in that: The leveling wheel includes an outer wheel portion and an inner support portion, wherein the inner support portion is connected to the inner annular surface of the outer wheel portion and is installed at an end of the connecting shaft away from the encoder; the maximum thickness of the inner support portion is smaller than the maximum thickness of the outer wheel portion, so that an accommodation space is formed between the wheel edge of the outer wheel portion close to the encoder and the inner support portion, and the first protective portion is located in the accommodation space.

4. The leveling mechanism according to claim 3, characterized in that: The connecting shaft is provided with a positioning portion, and the inner supporting portion is provided with a positioning matching portion, and the positioning matching portion matches with the positioning portion so that the axis of the connecting shaft coincides with the axis of the leveling wheel.

5. The leveling mechanism according to claim 1, characterized in that: The second protection portion is located on a side of the first protection portion close to the encoder.

6. The leveling mechanism according to claim 1, characterized in that: The protective cover has an open side, and the open side faces the leveling wheel; one end of the connecting shaft is connected to the encoder, and the other end of the connecting shaft extends from the open side and is connected to the leveling wheel; The first protection part is connected to the end surface of the opening side; or the first protection part is staggered with the end surface of the opening side.

7. The leveling mechanism according to any one of claims 1 to 6, characterized in that: The protective cover is provided with a third protective portion, at least part of which is located inside the protective cover, and a gap is set between the third protective portion and the circumferential surface of the connecting shaft; along the axial direction of the connecting shaft, the third protective portion is located on the side of the second protective portion away from the encoder.

8. The leveling mechanism according to claim 7, characterized in that: A dimension of the second protection portion in a radial direction of the connecting shaft is larger than a gap between the third protection portion and a circumferential surface of the connecting shaft.

9. The leveling mechanism according to claim 7, characterized in that: The first guarding part and the third guarding part are both plate-shaped structures, and the plate surfaces of the first guarding part and the third guarding part are coplanar; or, along the axial direction of the connecting shaft, the first guarding part is located between the third guarding part and the second guarding part.

10. A boarding bridge, characterized in that: The invention comprises the leveling mechanism according to any one of claims 1 to 9.

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