Roller shutter pre-tightening tool, boarding bridge and boarding bridge

Abstract

The utility model provides a roller shutter pre-tightening tool, a boarding bridge and a boarding bridge, and relates to the technical field of tools. The roller shutter pre-tightening tool comprises a sleeve, a transmission assembly and a driving source, the sleeve is provided with a mounting hole, and the mounting hole is used for being connected with a roller shutter shaft; the output end of the transmission assembly is connected to the sleeve. The output end of the driving source is connected to the transmission assembly, and the driving source drives the sleeve to rotate through the transmission assembly, so that the roller shutter shaft rotates and is used for pre-tightening the roller shutter shaft. A mounting hole of the sleeve is used for being connected and mounted with a roller shutter shaft, the transmission assembly plays a role in power transmission and speed reduction, the output end of the driving source is connected to the input end of the transmission assembly, and the output end of the transmission assembly is connected to the sleeve. When the roller shutter shaft needs to be pre-tightened, after the sleeve is connected and mounted to the roller shutter shaft through the mounting hole, under the driving action of the driving source, the sleeve is driven to rotate through the transmission assembly, then the roller shutter shaft is driven to rotate, pre-tightening of the roller shutter shaft is achieved, and therefore the pre-tightening efficiency and the mounting efficiency of the roller shutter shaft are improved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of tooling, and in particular to a rolling curtain pre-tightening tooling, an aircraft boarding bridge and a ship boarding bridge. Background Art

[0002] The existing boarding bridge or boarding bridge includes a rotating platform, a receiving platform, and a receiving port. Roller curtains are installed between the rotating platform and the passage and between the receiving platform and the receiving port. The roller curtains play a role in preventing wind and preventing people from falling. When the passage or the receiving port rotates, the roller curtains rotate adaptively with the rotation of the passage or the receiving port.

[0003] The existing roller blind shaft is equipped with a torsion spring or other elastic parts, which need to be pre-tightened when installing or inspecting the roller blind. Currently, there are no special tools for pre-tightening, which affects the pre-tightening efficiency and installation efficiency. Utility Model Content

[0004] The utility model provides a rolling curtain pre-tightening tool, an aircraft boarding bridge and a ship boarding bridge, which reduce the labor intensity of operators and improve the installation efficiency.

[0005] According to a first aspect of the utility model, a roller blind pre-tightening tool is provided, comprising:

[0006] A sleeve, wherein the sleeve is provided with a mounting hole, and the mounting hole is used to connect with the roller blind shaft;

[0007] A transmission assembly, wherein an output end of the transmission assembly is connected to the sleeve;

[0008] A driving source, wherein the output end of the driving source is connected to the transmission assembly, and the driving source drives the sleeve to rotate through the transmission assembly to rotate the rolling curtain shaft, so as to pre-tighten the rolling curtain shaft.

[0009] In some embodiments, one of the inner wall of the mounting hole and the outer wall of the rolling blind shaft is provided with a limiting portion, and the other is provided with a limiting matching portion corresponding to the limiting portion.

[0010] In some embodiments, the limiting portion is detachably connected to the limiting matching portion.

[0011] In some embodiments, the roller blind pre-tightening tool further comprises:

[0012] A mounting seat, the transmission assembly is mounted on the mounting seat;

[0013] A limit plate is connected to the mounting seat. The boarding bridge or boarding boat is provided with a limit slot. The limit plate is used to cooperate with the limit slot for limiting.

[0014] In some embodiments, the limiting plate is rotatably connected to the mounting seat, and the limiting plate can be rotated to achieve selective switching between limiting and releasing the limiting.

[0015] In some embodiments, the transmission assembly includes:

[0016] a worm wheel connected to the sleeve;

[0017] A worm is meshed with the worm wheel. The worm is connected to the driving source. The driving source drives the worm to rotate and drives the sleeve to rotate through the worm wheel.

[0018] In some embodiments, the transmission assembly is a self-locking mechanism;

[0019] And / or, the driving source is a hand wheel or a motor.

[0020] According to the second aspect of the utility model, an embodiment of the utility model further provides a boarding bridge, comprising a roller curtain shaft and a roller curtain pre-tightening tool as described above, wherein the roller curtain pre-tightening tool is installed on the roller curtain shaft.

[0021] In some embodiments, the roller blind pre-tightening tool further includes a limit plate;

[0022] The boarding bridge is provided with a limit slot and a guide opening on one side close to the rolling shutter shaft. The guide opening is a conical structure. The small end of the guide opening is connected to the limit slot, and the large end of the guide opening is arranged toward the limit plate. The limit plate is passed through the limit slot.

[0023] According to the third aspect of the utility model, an embodiment of the utility model further provides a boarding bridge, a roller blind shaft and the above-mentioned roller blind pre-tightening tool, wherein the roller blind pre-tightening tool is installed on the roller blind shaft.

[0024] An embodiment of the utility model has the following advantages or beneficial effects:

[0025] In the roller blind pre-tightening tool provided in this embodiment, the mounting hole of the sleeve is used for connecting and installing with the roller blind shaft, the transmission assembly is arranged between the driving source and the sleeve, the transmission assembly plays the role of power transmission and deceleration, the output end of the driving source is connected to the input end of the transmission assembly, and the output end of the transmission assembly is connected to the sleeve. When the roller blind shaft needs to be pre-tightened, after the sleeve is connected and installed on the roller blind shaft through the mounting hole, under the driving action of the driving source, the sleeve is driven to rotate through the transmission assembly, and then the roller blind shaft is driven to rotate, so as to realize the pre-tightening of the roller blind shaft, thereby improving the pre-tightening efficiency and installation efficiency of the roller blind shaft.

[0026] The boarding bridge or boarding bridge provided in this embodiment can realize pre-tightening of the roller blind shaft by using the roller blind pre-tightening tool, and the roller blind can be freely retracted and extended, which is beneficial for connection or isolation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to better understand the utility model, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the utility model. In addition, related elements or components may have different settings as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each of the drawings. By describing its example embodiments in detail with reference to the drawings, the above and other features and advantages of the utility model will become more apparent.

[0028] in:

[0029] Figure 1 Shown is a structural schematic diagram of a roller blind pre-tightening tooling from one perspective of an embodiment of the utility model.

[0030] Figure 2 It shows a structural schematic diagram of the rolling curtain pre-tightening tooling of one embodiment of the utility model from another perspective;

[0031] Figure 3 Shown is a schematic diagram of the coordination of a roller blind pre-tightening tool and a machine connection port according to an embodiment of the utility model.

[0032] The reference numerals are described as follows:

[0033] 100, rolling curtain pre-tightening tool; 200, receiving port; 201, limit slot; 202, guide port;

[0034] 1. Sleeve; 2. Transmission assembly; 3. Driving source; 4. Limiting part; 5. Mounting seat; 6. Limiting plate;

[0035] 11. Mounting hole. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the example embodiments of the utility model to clearly and completely describe the technical solutions in the example embodiments of the utility model. The example embodiments described herein are only for illustrative purposes and are not intended to limit the scope of protection of the utility model. Therefore, it should be understood that various modifications and changes can be made to the example embodiments without departing from the scope of protection of the utility model.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more; the term "and / or" includes any and all combinations of one or more associated listed items. In particular, reference to "the / the" object or "an" object is also intended to indicate one of a possible plurality of such objects.

[0038] Unless otherwise specified or explained, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0039] Further, in the description of the present invention, it should be understood that the directional words such as "upper", "lower", "inner", "outer" and the like described in the exemplary embodiments of the present invention are described at the angles shown in the accompanying drawings and should not be understood as limitations on the exemplary embodiments of the present invention. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to another element (one or more) "upper", "lower", or "inner", "outer", it can not only be directly connected to the other (one or more) elements "upper", "lower", or "inner", "outer", but can also be indirectly connected to the other (one or more) elements "upper", "lower", "inner", "outer" through an intermediate element.

[0040] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0041] This embodiment provides a roller blind pre-tightening tool 100, such as Figure 1-Figure 2 As shown, the roller blind pre-tightening tool 100 includes a sleeve 1, a transmission assembly 2 and a driving source 3. The sleeve 1 is provided with a mounting hole 11, and the mounting hole 11 is used to connect with the roller blind shaft. The output end of the transmission assembly 2 is connected to the sleeve 1. The output end of the driving source 3 is connected to the transmission assembly 2. The driving source 3 drives the sleeve 1 to rotate through the transmission assembly 2, so that the roller blind shaft rotates, which is used for pre-tightening the roller blind shaft.

[0042] Among them, the driving source 3 can be a handwheel. The operator turns the handwheel, and the transmission component 2 plays the role of power transmission. The manual rotation method is adopted to save electric energy. The driving source 3 can also be a motor. The operator turns on the motor and sets the motor speed and running time accordingly. The electronic control method is adopted to save the operator's installation difficulty and improve the preload efficiency.

[0043] In the roller blind pre-tightening tool 100 provided in this embodiment, the mounting hole 11 of the sleeve 1 is used for connection and installation with the roller blind shaft, the transmission assembly 2 is arranged between the driving source 3 and the sleeve 1, the transmission assembly 2 plays the role of power transmission and deceleration, the output end of the driving source 3 is connected to the input end of the transmission assembly 2, and the output end of the transmission assembly 2 is connected to the sleeve 1. When the roller blind shaft needs to be pre-tightened, after the sleeve 1 is connected and installed on the roller blind shaft through the mounting hole 11, under the driving action of the driving source 3, the sleeve 1 is driven to rotate through the transmission assembly 2, and then the roller blind shaft is driven to rotate, so as to realize the pre-tightening of the roller blind shaft, thereby improving the pre-tightening efficiency and installation efficiency of the roller blind shaft.

[0044] In one embodiment, one of the inner wall of the mounting hole 11 and the outer wall of the rolling blind shaft is provided with a limiting portion 4, and the other corresponding to the limiting portion 4 is provided with a limiting matching portion (not shown in the figure). The limiting portion 4 and the limiting matching portion cooperate with each other to achieve the limiting between the rolling blind shaft and the sleeve 1.

[0045] Exemplarily, the limiting portion 4 may be optionally provided as a limiting protrusion inside the mounting hole 11 , and the limiting matching portion may be optionally provided in the limiting hole of the rolling shutter shaft, and the limiting protrusion is passed through the limiting hole, and as the sleeve 1 rotates, the rolling shutter shaft may rotate along with the sleeve 1 .

[0046] Exemplarily, the limiting portion 4 may optionally be a stopping bolt, and the limiting matching portion may optionally be arranged in a limiting hole of the rolling shutter shaft, the stopping bolt and the limiting hole are adapted to each other, and after the stopping bolt is aligned with the limiting hole, the stopping bolt is screwed into the limiting hole to realize the installation and fixation between the sleeve 1 and the rolling shutter shaft.

[0047] Among them, the stop bolt is an internal angle bolt, for example, the stop bolt is an internal square, internal pentagon, internal hexagon or internal octagon or at least one of other forms, and the specific structural form can be adjusted and selected according to actual production conditions.

[0048] In one embodiment, the limiting portion 4 is detachably connected to the limiting matching portion.

[0049] Exemplarily, the sleeve 1 is provided with a through hole, one of the limiting hole and the through hole can be a through hole, and the other is a threaded hole. The stopping bolt is passed through the through hole and aligned with the limiting hole. The stopping bolt is threadedly connected to the threaded hole. While ensuring the stable connection between the sleeve 1 and the rolling curtain shaft, it also facilitates the installation and disassembly between the sleeve 1 and the rolling curtain shaft, and has good subsequent maintainability.

[0050] In one embodiment, the number of the limiting parts 4 and the limiting matching parts are both multiple, the multiple limiting parts 4 are arranged along the circumference of the sleeve 1, the multiple limiting matching parts are arranged along the circumference of the sleeve 1, and the multiple limiting parts 4 are arranged correspondingly to the multiple limiting matching parts.

[0051] Exemplarily, the number of the limiting parts 4 and the limiting matching parts are both three, so that the connection point between the sleeve 1 and the roller blind shaft is a triangular structure, and the stability of the triangular structure is utilized to further improve the fixing effect between the sleeve 1 and the roller blind shaft.

[0052] In one embodiment, the transmission component 2 can specifically be an optional reducer, and the transmission component 2 includes a worm wheel (not shown in the figure) and a worm (not shown in the figure), the worm wheel is connected to the sleeve 1, specifically, the worm wheel is sleeved on the outside of the sleeve 1 and connected to the sleeve 1, the worm is engaged with the worm wheel, and the worm is connected to the driving source 3, the driving source 3 drives the worm to rotate, and drives the sleeve 1 to rotate through the worm wheel.

[0053] Specifically, the worm is connected to the driving source 3, the worm is the input end of the transmission assembly 2, the worm wheel is the output end of the transmission assembly 2, and the worm wheel is connected to the sleeve 1. When the driving source 3 is operated to rotate, the driving source 3 drives the worm to rotate, and drives the sleeve 1 and the roller blind shaft to rotate through the worm wheel.

[0054] In one embodiment, the transmission assembly 2 is a self-locking mechanism. The self-locking structure is used to avoid reversal during the pre-tightening process to avoid harm to the operator.

[0055] Exemplarily, when the transmission assembly 2 includes a worm wheel and a worm, the self-locking structure can be specifically in the following forms, for example, the helix angle of the worm is less than the friction angle between the worm wheel and the worm, and the pressure angle is greater than 90 degrees to achieve anti-reversal or automatic locking capability; it can also be that the balance between the normal force of the worm wheel and the axial force, and the selection of the friction coefficient of the worm require appropriate selection of materials and coatings to reduce the friction coefficient of the worm. It can also be the relationship between the friction angle and the lead angle. When the friction angle is greater than the lead angle, the worm transmission has self-locking performance. In summary, the use of a self-locking structure to achieve self-locking of a worm wheel and worm can have a variety of forms, including but not limited to the helix angle, pressure angle, torque balance, friction coefficient, the relationship between the friction angle and the lead angle, transmission efficiency, structural parameters, lubrication conditions, material selection, and use environment.

[0056] The transmission component 2 can also be other self-locking mechanisms with self-locking functions or self-locking structures, such as a self-locking mechanism based on a ratchet pawl, a self-locking mechanism based on a spring and axial self-locking, a self-locking mechanism based on a trapezoidal screw, a self-locking mechanism based on a cam, etc.

[0057] In one embodiment, Figure 1-Figure 2As shown, the roller blind pre-tightening tool 100 also includes a mounting seat 5 , and the transmission assembly 2 is mounted on the mounting seat 5 , and the mounting seat 5 provides a mounting position for the transmission assembly 2 .

[0058] In one embodiment, Figure 1-Figure 3 As shown, the roller shutter pre-tightening tool 100 also includes a limit plate 6, which is connected to the mounting seat 5. The boarding gate of the boarding bridge or boarding ship is provided with a limit slot 201, and the limit plate 6 is used to cooperate with the limit slot 201 for limiting.

[0059] When the roller blind shaft needs to be pre-tightened, the limit plate 6 is set in the limit slot 201 to achieve the limit between the boarding bridge or boarding ship and the roller blind pre-tightening tool 100, so that the entire roller blind pre-tightening tool 100 and the boarding bridge or boarding ship are aligned, and the pre-tightening accuracy of the roller blind shaft is improved; when the roller blind shaft does not need to be pre-tightened or the pre-tightening is completed, the limit plate 6 is detached from the limit slot 201 to release the position limit between the roller blind pre-tightening tool 100 and the boarding bridge or boarding ship, so that the installation and removal of the roller blind pre-tightening tool 100 have strong flexibility. In this way, the limit plate 6 can be selectively set in the limit slot 201 for the limit between the boarding bridge or boarding ship and the roller blind pre-tightening tool 100.

[0060] In one embodiment, the limiting plate 6 is rotatably connected to the mounting seat 5 , and the limiting plate 6 can be rotated to achieve selective switching between limiting and releasing the limiting.

[0061] Specifically, the limit plate 6 is not fixedly arranged relative to the mounting seat 5, but is movably arranged. The limit plate 6 is rotatably connected to the mounting seat 5 through a rotating shaft. The limit plate 6 is arranged relative to the limit slot 201 and inserted into the limit slot 201, and then the limit plate 6 is rotated so that the limit plate 6 is at a certain angle relative to the mounting slot. For example, the limit plate 6 and the limit slot 201 are arranged vertically to achieve the limit between the limit plate 6 and the mounting slot, and the fixing effect is good. To a certain extent, the limit plate 6 prevents the risk of the rolling curtain pre-tightening tool 100 falling. After the sleeve 1 is connected to the rolling curtain shaft, the rolling curtain pre-tightening tool 100 is suspended on the receiving port 200, and there is no need for the operator to hold it extra, which saves the operator's installation difficulty and facilitates the smooth progress of the rolling curtain shaft pre-tightening process. After the pre-tightening of the roller shutter shaft is completed, the connection between the sleeve 1 and the roller shutter shaft is released, and then the limit plate 6 is rotated to a position relatively parallel to the limit slot 201, so that the limit plate 6 can just escape from the limit slot 201, and the roller shutter pre-tightening tool 100 can be removed from the boarding bridge or boarding ship.

[0062] This embodiment also provides a boarding bridge, such as Figure 1-Figure 3As shown, the boarding bridge includes a curtain shaft and the curtain pre-tightening tool 100, which is installed on the curtain shaft. The curtain pre-tightening tool 100 is arranged corresponding to the curtain shaft, for example, the curtain pre-tightening tool 100 is arranged at the upper end or lower end of the curtain shaft along the axial direction of the curtain shaft.

[0063] In one embodiment, the boarding bridge further includes a rotating platform (not shown in the figure) and an aircraft receiving port 200, and the roller blind shaft is disposed at least one of the rotating platform and the aircraft receiving port 200.

[0064] Among them, the rotating platform is used to connect the terminal building end, the roller shutter shaft can be set on the rotating platform, and the roller shutter shaft can be pre-tightened by using the roller shutter pre-tightening tool 100. As the rotating platform rotates, the roller shutter can be freely retracted and extended; the roller shutter shaft can also be set at the boarding gate, and the roller shutter shaft can be pre-tightened by using the roller shutter pre-tightening tool 100. The roller shutter can be freely retracted and extended, thereby realizing the connection and isolation between the boarding gate and the reception platform.

[0065] It is understandable that the roller curtain pre-tightening tool 100 can be completely installed and fixed on the boarding bridge, and each roller curtain shaft corresponds to a roller curtain pre-tightening tool 100; it can also be that the roller curtain pre-tightening tool 100 is detachably installed on the boarding bridge, and two roller curtain pre-tightening tools 100 correspond to a rotating platform and a receiving port respectively; or one boarding bridge corresponds to only one roller curtain pre-tightening tool 100; or multiple boarding bridges share one roller curtain pre-tightening tool 100. This embodiment does not limit the number of roller curtain pre-tightening tools 100 and the corresponding position relationship with the rotating platform and the receiving port, and can be adjusted according to actual production conditions.

[0066] The present embodiment further provides a boarding bridge, which includes a rolling curtain shaft and the above-mentioned rolling curtain pre-tensioning tool 100, the rolling curtain pre-tensioning tool 100 is installed on the rolling curtain shaft, and the rolling curtain pre-tensioning tool 100 is arranged corresponding to the rolling curtain shaft.

[0067] Specifically, the boarding bridge further includes a rotating platform and a receiving port 200 , and the roller blind shaft is arranged at least one of the rotating platform and the receiving port 200 .

[0068] The boarding bridge provided in this embodiment has a rotating platform for connecting the waiting room end, and the roller shutter shaft can be arranged on the rotating platform. The roller shutter shaft can be pre-tightened by using the roller shutter pre-tightening tool 100, and the roller shutter can be freely retracted and extended as the rotating platform rotates; the roller shutter shaft can also be arranged at the boarding gate, and the roller shutter shaft can be pre-tightened by using the roller shutter pre-tightening tool 100, and the roller shutter can be freely retracted and extended, thereby realizing the connection and isolation between the boarding gate and the reception platform.

[0069] Among them, the rolling curtain pre-tightening tool 100 and the rotating platform, and the rolling curtain pre-tightening tool 100 and the receiving port 200 are detachably connected, which is convenient for the installation and disassembly of the rolling curtain pre-tightening tool 100.

[0070] Specifically, the limit plate 6 of the roller shutter pretensioning tooling 100 is connected to the sleeve 1 through the mounting seat 5; the boarding bridge is provided with a limit slot 201 and a guide opening 202 on the side close to the roller shutter shaft, the guide opening 202 is a conical structure, the small end of the guide opening 202 is connected to the limit slot 201, and the large end of the guide opening 202 is arranged toward the limit plate 6, and the limit plate 6 is inserted into the limit slot 201.

[0071] Through the cooperation between the limit plate 6 and the limit slot 201, the installation and disassembly of the roller shutter pre-tightening tool 100 and the receiving port 200 or the rotating platform can be realized, reducing the labor intensity of the operators and reducing the maintenance cost. At the same time, by using the guide opening 202 of the conical structure, the large end of the guide opening 202 faces outward, so that the limit plate 6 can enter the limit slot 201 through the guide opening 202 with a larger diameter. The guide opening 202 guides the limit plate 6, and the limit plate 6 enters the limit slot 201 through the guide opening 202, which improves the convenience of inserting the limit plate 6 into the limit slot 201.

[0072] Furthermore, the upper end of the rolling curtain shaft is connected to the top plate of the rotating platform through the rolling curtain bearing, and the lower end of the rolling curtain shaft is connected to the bottom plate of the rotating platform through the rolling curtain bearing. A plurality of coil spring assemblies are sleeved on the rolling curtain shaft and spaced from top to bottom along the axial direction of the rolling curtain. Specifically, the coil spring assembly includes a coil spring and a cylindrical coil spring enclosure. The coil spring is sleeved on the rolling curtain shaft, the inner end of the coil spring is fixed to the rolling curtain shaft, the outer end of the coil spring is fixed to the coil spring enclosure, and the coil spring enclosure is fixed to the flexible rolling curtain. When in use, the rolling curtain shaft is fixed, and the flexible rolling curtain can be rolled on the coil spring enclosure driven by the coil spring. Rolling curtain tightening devices are provided on both sides of the rotating platform, and sprockets are sleeved on the lower ends of the rolling curtain shafts on both sides. Synchronous chains are sleeved on the sprockets on both sides. The rolling curtain tightening devices on both sides work synchronously through the synchronous chains. When the rolling curtain on one side is retracted and rolled on the reel, the rolling curtain on the other side is unfolded.

[0073] It should be noted that the embodiments of the present invention are shown in the drawings and described in this specification is only an example of the principle of the present invention. It should be clearly understood by those skilled in the art that the principle of the present invention is not limited to any details or any components of the device shown in the drawings or described in the specification.

[0074] It should be understood that the utility model does not limit its application to the detailed structure and arrangement of the components proposed in this specification. The utility model can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned deformation forms and modified forms fall within the scope of the utility model. It should be understood that the utility model disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the utility model. The embodiments described in this specification illustrate the best known methods for implementing the utility model and will enable those skilled in the art to utilize the utility model.

[0075] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variation, use, or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and example embodiments are to be considered as exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

[0076] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of the present invention is limited only by the appended claims.

Claims

1. A roller blind pre-tightening tool, characterized in that: include: A sleeve, wherein the sleeve is provided with a mounting hole, and the mounting hole is used to connect with the roller blind shaft; A transmission assembly, wherein an output end of the transmission assembly is connected to the sleeve; A driving source, wherein the output end of the driving source is connected to the transmission assembly, and the driving source drives the sleeve to rotate through the transmission assembly to rotate the rolling curtain shaft, so as to pre-tighten the rolling curtain shaft.

2. The roller blind pre-tightening tool according to claim 1, characterized in that: One of the inner wall of the mounting hole and the outer wall of the rolling blind shaft is provided with a limiting portion, and the other is provided with a limiting matching portion corresponding to the limiting portion.

3. The roller blind pre-tightening tool according to claim 2, characterized in that: The limiting portion is detachably connected to the limiting matching portion.

4. The roller blind pre-tightening tool according to claim 1, characterized in that: The roller blind pre-tightening tool also includes: A mounting seat, the transmission assembly is mounted on the mounting seat; A limit plate is connected to the mounting seat. The boarding bridge or boarding boat is provided with a limit slot. The limit plate is used to cooperate with the limit slot for limiting.

5. The roller blind pre-tightening tool according to claim 4, characterized in that: The limiting plate is rotatably connected to the mounting seat, and the limiting plate can be rotated to achieve selective switching between limiting and releasing the limiting.

6. The roller blind pre-tightening tool according to any one of claims 1 to 5, characterized in that: The transmission assembly comprises: a worm wheel connected to the sleeve; A worm is meshed with the worm wheel. The worm is connected to the driving source. The driving source drives the worm to rotate and drives the sleeve to rotate through the worm wheel.

7. The roller blind pre-tightening tool according to claim 1, characterized in that: The transmission assembly is a self-locking mechanism; And / or, the driving source is a hand wheel or a motor.

8. A boarding bridge, characterized in that: It comprises a rolling curtain shaft and a rolling curtain pre-tightening tool as claimed in any one of claims 1 to 7, wherein the rolling curtain pre-tightening tool is installed on the rolling curtain shaft.

9. The boarding bridge according to claim 8, characterized in that: The roller blind pre-tightening tool further includes a limit plate; The boarding bridge is provided with a limit slot and a guide opening on one side close to the rolling shutter shaft. The guide opening is a conical structure. The small end of the guide opening is connected to the limit slot, and the large end of the guide opening is arranged toward the limit plate. The limit plate is passed through the limit slot.

10. A boarding bridge, characterized in that: It comprises a rolling curtain shaft and a rolling curtain pre-tightening tool as claimed in any one of claims 1 to 7, wherein the rolling curtain pre-tightening tool is installed on the rolling curtain shaft.

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