Telescopic guide rail and telescopic method thereof

Abstract

The telescopic guide rail comprises a first guide rail body and a second guide rail body, and a first containing cavity is formed in the second guide rail body; the first guide rail is arranged in the first containing cavity in a penetrating mode, and the first guide rail can stretch out of or retract into the first containing cavity. A first guide groove and a second guide groove are respectively formed in the first guide rail and the second guide rail along the length direction, and the first guide groove and the second guide groove are arranged in parallel; when the first guide rail extends out of the first accommodating cavity, the first guide groove is connected with the second guide groove; the telescopic guide rail further comprises a jacking device, the jacking device is installed at the front end of the second guide rail, and the jacking device is configured to push the first guide rail to ascend when the first guide rail extends out of the first containing cavity, so that the first guide groove and the second guide groove are aligned to pass through a nested structure composed of the first guide rail and the second guide rail. And the folding chair meets the use requirements, is convenient to adjust and use, can be retracted when not in use, reduces the occupied space and is high in portability.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle auxiliary equipment, and in particular to a telescopic guide rail and a telescopic method thereof. Background Art

[0002] An aircraft catapult is a device specially designed for deploying and operating drones. It is usually used in the military, security and reconnaissance fields. It carries the heavy responsibility of quickly and efficiently deploying drones in emergency or specific mission scenarios to obtain intelligence, perform surveillance, conduct reconnaissance or perform other tasks. Although traditional drone take-off methods such as runway take-off or hand-throw take-off are mature and widely used, they are often limited by site, time and environmental conditions and cannot meet the requirements of rapid deployment. The aircraft catapult combines multiple sections of guide rails to form a guide rail system that matches the drone's ejection stroke. The overall length of the guide rail corresponds to the drone's ejection stroke to meet the drone's ejection requirements, overcoming the limitations of traditional take-off methods and becoming an important tool for achieving rapid drone take-off.

[0003] However, the telescopic UAV ejection device in the prior art, such as the invention patent with publication number CN111824443B, discloses a telescopic UAV ejection device, which retracts the telescopic frame into the base. Although the space occupied by the device is reduced to a certain extent through the retraction mechanism of the telescopic frame, this reduction is limited to the telescopic frame itself, and the space between the base and the sub-base cannot be hidden, making it difficult to reduce the space occupied by the base and the sub-base, resulting in poor portability and inconvenience in use. In addition, the length adjustability of the track is small, and the practicability is poor and the scope of application is narrow. Summary of the invention

[0004] The object of the present invention is to provide a telescopic guide rail and a telescopic method thereof, so as to solve the problems in the prior art that the telescopic guide rail occupies a large space, has poor portability, is inconvenient to use, has small adjustability of the track length, has poor practicality, and has a narrow scope of application.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A telescopic guide rail, comprising:

[0007] A first guide rail and a second guide rail, wherein a first accommodating cavity is formed on the second guide rail; the first guide rail is arranged in the first accommodating cavity, and the first guide rail can be extended or retracted into the first accommodating cavity;

[0008] A first guide groove and a second guide groove are respectively formed on the first guide rail and the second guide rail along the length direction, and the first guide groove is arranged in parallel with the second guide groove; when the first guide rail extends out of the first accommodating cavity, the first guide groove is connected with the second guide groove;

[0009] It also includes a lifting device, which is installed at the front end of the second guide rail. The lifting device is configured to push the first guide rail to rise when the first guide rail extends out of the first accommodating cavity, so as to align the first guide groove with the second guide groove.

[0010] According to the above-mentioned technical means, through the nested movable penetration structure composed of the first guide rail and the second guide rail, the telescopic guide rail can not only extend the first accommodating cavity through the first guide rail when needed to achieve the purpose of extending the telescopic guide rail, thereby meeting the use requirements and being easy to adjust and use, but also can shrink the first guide rail into the first accommodating cavity when not in use, so as to have a compact structure, reduce the occupied space and have high portability. Moreover, through the jacking device, when the first guide rail is extended, the first guide groove and the second guide groove can be smoothly and accurately docked together after extension to form a smooth, continuous and stable guide rail system, which enhances the adjustability of the guide rail length, meets the application scenarios with different length requirements, ensures the stability, reliability and smoothness of the guide rails after splicing, greatly improves the practicality and scope of application of the telescopic guide rail, and facilitates flexible application in different scenarios.

[0011] Furthermore, it also includes a third guide rail, on which a second accommodating cavity is formed; the second guide rail is arranged in the second accommodating cavity, and the second guide rail can be extended or retracted into the second accommodating cavity;

[0012] A third guide groove is formed on the third guide rail along the length direction, and the third guide groove is arranged in parallel with the second guide groove; when the second guide rail extends out of the second accommodating cavity, the second guide groove is connected with the third guide groove;

[0013] A lifting device is installed at the front end of the third guide rail, and the lifting device is also configured to push the second guide rail to rise when the second guide rail extends out of the second accommodating cavity, so as to align the second guide groove with the third guide groove.

[0014] According to the above technical means, the nested movable penetration structure composed of the second guide rail and the third guide rail increases the adjustability of the length of the telescopic guide rail, and has a wider adaptability, higher practicality and stronger flexibility. Specifically, not only can the first guide rail and the second guide rail be extended out of the first accommodating cavity and the second accommodating cavity in turn to achieve the extension of the telescopic guide rail when in use, meeting the use requirements and being easy to adjust and use, but also when not in use, the first guide rail and the second guide rail can be retracted into the first accommodating cavity and the second accommodating cavity in turn, so that the first guide rail and the second guide rail are finally recovered in the third guide rail. The structure is compact, the space occupied is small, and the portability is high. The lifting device is actuated when the first guide rail and the second guide rail are extended, so that the first guide groove, the second guide groove and the third guide groove can be smoothly and accurately docked together after being extended, forming a smooth, continuous and stable guide rail system, meeting the application scenarios with different length requirements, ensuring the stability, reliability and smoothness of the guide rails after splicing, greatly improving the practicality and scope of application of the telescopic guide rail, and facilitating flexible application in different scenarios.

[0015] Furthermore, the front end portions of the second guide rail and the third guide rail are formed with installation grooves, each of the installation grooves is respectively connected to the first accommodating cavity and the second accommodating cavity, a limiting plate is installed in each of the installation grooves, and the rear ends of the first guide rail and the second guide rail are fixed with extension plates, and the two extension plates can respectively abut against the corresponding limiting plates to respectively limit the rising height of the first guide rail and the second guide rail.

[0016] According to the above-mentioned technical means, the rising height of the second guide rail and the third guide rail is accurately limited by the abutment between the limit plate and the extension plate. Specifically, when the first guide rail and the second guide rail rise under the action of the jacking device, the two extension plates will respectively abut against the adjacent limit plates, thereby limiting the rising height of the guide rails, avoiding dislocation or instability caused by excessive rising or insufficient rising, ensuring that the first guide groove, the second guide groove and the third guide groove can be aligned and abutted when connected, ensuring the smoothness and continuity of the telescopic guide rail as a whole during use, improving the accuracy and stability of the overall splicing of the telescopic guide rail, with high practicality and reliability, and being able to better meet the needs of various application scenarios.

[0017] Furthermore, a first bottom wheel is installed at the rear end of each of the extension plates, and each of the first bottom wheels abuts against the inner wall of the first accommodating cavity and the inner wall of the second accommodating cavity respectively.

[0018] According to the above technical means, the two extension plates slide in the first accommodating cavity and the second accommodating cavity respectively through the first bottom wheel, thereby reducing the friction between the extension plates and the inner walls of the first accommodating cavity and the second accommodating cavity when the first guide rail and the second guide rail are successively extended or retracted to the first accommodating cavity and the second accommodating cavity, so that the first guide rail and the second guide rail can move more smoothly and smoothly during the extension or docking process, thereby improving the adjustment efficiency and stability and extending the service life of the telescopic guide rail.

[0019] Furthermore, second bottom wheels are installed at the bottom of the front ends of the second guide rail and the third guide rail, and each of the second bottom wheels can abut against the bottom of the corresponding first guide rail and the second guide rail.

[0020] According to the above technical means, in the process of the first guide rail and the second guide rail being extended or retracted to the first accommodating cavity and the second accommodating cavity in sequence, the two second bottom wheels respectively make smooth and stable contact with the corresponding first guide rail and the second guide rail, thereby reducing direct friction and collision between the first guide rail, the second guide rail and the third guide rail, thereby improving the adjustment efficiency and stability and extending the service life of the telescopic guide rail.

[0021] Furthermore, two centering wheels arranged opposite to each other are respectively installed at the front ends of the second guide rail and the third guide rail, and each of the centering wheels abuts against the side walls of the corresponding first guide rail and the second guide rail.

[0022] According to the above technical means, in the process of the first guide rail and the second guide rail being successively extended or retracted to the first accommodating cavity and the second accommodating cavity, the two relative side walls thereof are in smooth contact with the two adjacent centering wheels respectively, which not only further reduces the direct friction and collision between the first guide rail, the second guide rail and the third guide rail, but the centering wheels also have a guiding function, ensuring that in the process of the first guide rail and the second guide rail being extended or retracted, the centers of the first guide rail, the second guide rail and the third guide rail can always be kept in line, avoiding the problem of loose docking or poor operation due to offset or tilt, improving the docking accuracy, stability and continuity, and enhancing the practicality and application scope of the telescopic guide rail.

[0023] Furthermore, a first pushing member is fixed to the front end of the first guide rail, a second pushing member is fixed to the front end of the second guide rail, and a positioning member is fixed to the front end of the third guide rail. The first pushing member can abut against the second pushing member, and the second pushing member can abut against the positioning member.

[0024] According to the above-mentioned technical means, the first guide rail and the second guide rail can be extended or retracted by pushing and pulling the first pushing member and the second pushing member, which is easy to operate. In the process of retraction, the first pushing member and the second pushing member abut against each other, and the second pushing member and the positioning member abut against each other, thereby preventing the first guide rail and the second guide rail from being unable to be smoothly pulled out next time due to excessive retraction.

[0025] Furthermore, the number of the third guide rails is two or more, and each of the third guide rails is arranged in sequence along the length direction and passed through the second accommodating cavity of the adjacent third guide rail, and the second guide rail is passed through the second accommodating cavity located at the front end third guide rail; a jacking device is installed at the front end of each of the third guide rails, and each of the jacking devices is also configured to push the corresponding third guide rail to rise when each of the third guide rails extends out of the adjacent second accommodating cavity in sequence, so as to align each of the third guide grooves.

[0026] According to the above technical means, by adopting two or more third guide rails and nesting and movably arranging them in sequence along the length direction, the length of the telescopic guide rail can be adjusted according to actual needs, and the flexibility is higher. Specifically, during installation, each third guide rail can be movably arranged in the second accommodating cavity of the adjacent third guide rail, and the second guide rail is arranged in the second accommodating cavity of the third guide rail arranged at the front end, thereby enhancing the adjustability of the overall length of the guide rail. When not in use, it can also be completely retracted into the third guide rail arranged at the rear end. The structure is compact, occupies little space, is easy to transport and store, and is convenient to carry. A lifting device is provided between two adjacent third guide rails. When each third guide rail extends out of each second accommodating cavity in turn, each lifting device can push the corresponding third guide rail to rise, ensuring that each third guide groove can be accurately connected, aligned and tightly abutted, thereby improving the stability and reliability of the guide rail after overall splicing, ensuring the continuity and smoothness of the guide rail system, and expanding the practicality and scope of application of the telescopic guide rail, so that it can better adapt to various complex and changeable application scenarios.

[0027] Furthermore, it also includes a traction device, a traction column and a traction rope, the traction device is installed on the third guide rail, the traction column is installed at the front end of the first guide rail, one end of the traction rope is connected to the traction column, and the other end is connected to the traction device, and the traction device is used to reel in or unreel the traction rope.

[0028] According to the above-mentioned technical means, during the retraction process, the traction rope is retracted by the traction device, and the transmission traction column is retracted from pulling the first guide rail to the first accommodating cavity. When the first pushing member and the second pushing member abut against each other, the second guide rail is pulled back into the second accommodating cavity. When the second pushing member and the positioning member abut against each other, the retraction is completed, thereby realizing a fast and accurate retraction action of the guide rail, simple operation, high efficiency and stability.

[0029] The telescopic guide rail telescopic method specifically comprises the following steps:

[0030] S1. When the guide rail needs to be extended, the first guide rail is pulled out of the first accommodating cavity so that the first guide groove and the second guide groove are sequentially arranged and connected along the length direction;

[0031] S2, the lifting device pushes the first guide rail upward so that the first guide groove is aligned with and abuts against the second guide groove;

[0032] S3. When the guide rail needs to be retracted, the lifting device releases the lifting support for the first guide rail, and the first guide rail is reset to a state where the first guide groove and the second guide groove are not in contact with each other under the action of its own gravity;

[0033] S4. Push the first guide rail to retract into the first accommodating cavity.

[0034] Beneficial effects achieved by the present invention:

[0035] 1. The present invention adopts a nested movable penetration structure composed of a first guide rail and a second guide rail, so that the telescopic guide rail can not only be extended in sequence through the first guide rail when needed to achieve the extension of the telescopic guide rail, meet the use requirements, and be easy to adjust and use, but also can be retracted into the second guide rail when not in use, so that the structure is compact, the occupied space is reduced, and the portability is high.

[0036] 2. The present invention uses a lifting device to enable the first guide groove and the second guide groove to be smoothly and accurately docked together after the first guide rail is extended, forming a smooth, continuous and stable guide rail system, thereby enhancing the adjustability of the guide rail length, meeting application scenarios with different length requirements, ensuring the stability, reliability and smoothness of the guide rails after splicing, greatly improving the practicality and applicability of the telescopic guide rail, and facilitating flexible application in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a partial schematic diagram of the three-dimensional structure of the telescopic guide rail of the present invention;

[0038] Figure 2 Schematic diagram of the fracture structure of the first guide rail, the second guide rail and the third guide rail of the present invention;

[0039] Figure 3 An exploded view of the second guide rail of the present invention being separated from the first guide rail;

[0040] Figure 4 An exploded view of the third guide rail of the present invention being separated from the second guide rail;

[0041] Figure 5 It is a partial schematic diagram of the second guide rail and the first guide rail being spliced ​​together according to the present invention;

[0042] Figure 6 It is a side view of the connection of the traction device, the traction rope, the first guide rail, the second guide rail and the third guide rail of the present invention.

[0043] Among them, 1-first guide rail; 11-first guide groove; 2-second guide rail; 21-first accommodating chamber; 22-second guide groove; 3-third guide rail; 31-second accommodating chamber; 32-third guide groove; 4-lifting device; 51-installation groove; 52-limiting plate; 53-extension plate; 61-first bottom wheel; 62-second bottom wheel; 63-centering wheel; 71-first pushing member; 72-second pushing member; 73-positioning member; 81-traction device; 82-traction column; 83-traction rope; 84-guide wheel.

[0044] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The same or similar numbers correspond to the same or similar parts. The terms describing the positional relationship in the drawings are only used for illustrative purposes and should not be construed as limitations on this patent. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific embodiments should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0047] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0048] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0049] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0050] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0051] The technical solution of the present invention is described in detail below in conjunction with the specific drawings.

[0052] Embodiment 1

[0053] In this embodiment, a telescopic guide rail, such as Figure 1 and Figure 2 As shown, it includes: a first guide rail 1 and a second guide rail 2, and a first accommodating cavity 21 is formed on the second guide rail 2; the first guide rail 1 is arranged in the first accommodating cavity 21, and the first guide rail 1 can be extended or retracted into the first accommodating cavity 21; the first guide rail 1 and the second guide rail 2 are respectively formed with a first guide groove 11 and a second guide groove 22 along the length direction, and the first guide groove 11 is arranged parallel to the second guide groove 22; when the first guide rail 1 extends out of the first accommodating cavity 21, the first guide groove 11 is connected with the second guide groove 22; it also includes a lifting device 4, the lifting device 4 is installed at the front end of the second guide rail 2, and the lifting device 4 is configured to push the first guide rail 1 to rise when the first guide rail 1 extends out of the first accommodating cavity 21, so that the first guide groove 11 is aligned with the second guide groove 22.

[0054] In this embodiment, the first guide rail 1 and the second guide rail 2 are formed into a nested movable penetrating structure, so that the telescopic guide rail has a telescopic function to adjust the overall length of the guide rail, and the first guide groove 11 and the second guide groove 22 are aligned and abutted under the action of the jacking device 4, so that the guide groove formed by the connection of the first guide groove 11 and the second guide groove 22 is continuous and smooth. Specifically, Figure 3 and Figure 4As shown, in actual application, when the guide rail needs to be extended, the first guide rail 1 is first extended from the first accommodating cavity 21 so that the first guide groove 11 and the second guide groove 22 are arranged in sequence along the length direction, and then the lifting device 4 pushes the first guide rail 1 up so that the first guide groove 11 is aligned with and abuts against the second guide groove 22 (as shown in FIG. Figure 5 As shown), a smooth, continuous and stable guide rail system is formed, the telescopic guide rail is extended to meet the use requirements of different scenes, and the flexibility is high; in actual application, the end of the first guide rail 1 extending out of the first accommodating cavity 21 is taken as the front end, and the extended telescopic guide rail is tilted, and its front end is lower than the rear end, the front end is the initial position of the ejection, and the rear end is the ejection end point. When the ejection is working, the ejection trolley is installed on the inclined guide rail and connected to the guide groove formed by the first guide groove 11 and the second guide groove 22. The ejection trolley can drive the unmanned The machine slides along the length direction of the guide rail to achieve the purpose of catapult take-off of the UAV; when the guide rail needs to be retracted, the lifting device 4 releases the lifting support effect on the first guide rail 1, and under the action of its own gravity, the first guide rail 1 is reset to the first guide groove 11 and the second guide groove 22 is not in contact, and then the first guide rail 1 is retracted into the first accommodating cavity 21 to achieve the retraction of the guide rail. The space occupied by the retracted guide rail is only the volume of the second guide rail 2, and the structure is compact and easy to use; wherein, the lifting device 4 can be a combination of a screw and a nut, or it can be a cylinder.

[0055] In this embodiment, a third guide rail 3 is also included, and a second accommodating cavity 31 is formed on the third guide rail 3; the second guide rail 2 is arranged in the second accommodating cavity 31, and the second guide rail 2 can be extended or retracted into the second accommodating cavity 31; a third guide groove 32 is formed on the third guide rail 3 along the length direction, and the third guide groove 32 is arranged parallel to the second guide groove 22; when the second guide rail 2 extends out of the second accommodating cavity 31, the second guide groove 22 is connected with the third guide groove 32; a lifting device 4 is installed at the front end of the third guide rail 3, and the lifting device 4 is also configured to push the second guide rail 2 to rise when the second guide rail 2 extends out of the second accommodating cavity 31, so that the second guide groove 22 is aligned with the third guide groove 32.

[0056] like Figure 1 and Figure 2 As shown, in this embodiment, the second guide rail 2 is inserted into the second accommodating cavity 31 to form a nested movable insertion structure with the first guide rail 1 and the second guide rail 2, thereby increasing the adjustability of the telescopic guide rail length, and having a wider range of adaptability, higher practicality, and stronger flexibility. Specifically, in actual application, the first guide rail 1 and the second guide rail 2 are sequentially extended out of the first accommodating cavity 21 and the second accommodating cavity 31, so that the first guide groove 11, the second guide groove 22, and the third guide groove 32 are sequentially arranged along the length direction, and then the two jacking devices 4 respectively push the first guide rail 1 and the second guide rail 2 to rise, so that the first guide groove 11, the second guide groove 22, and the third guide groove 32 are aligned and abutted (as shown in FIG. Figure 5As shown), a smooth, continuous and stable guide rail system is formed to achieve the extension of the telescopic guide rail; when the guide rail needs to be retracted, the two lifting devices 4 release the lifting support effect on the first guide rail 1 and the second guide rail 2 respectively, and under the action of their own gravity, the first guide rail 1 and the second guide rail 2 are reset to the first guide groove 11, the second guide groove 22 and the third guide groove 32 are in a non-abutment state, and then the first guide rail 1 and the second guide rail 2 are successively retracted into the first accommodating cavity 21 and the second accommodating cavity 31 to achieve the retraction of the guide rail. The space occupied by the retracted guide rail is only the volume of the third guide rail 3, the structure is compact, and it is easy to use.

[0057] In this embodiment, the front end portions of the second guide rail 2 and the third guide rail 3 are formed with installation grooves 51, and each installation groove 51 is respectively connected to the first accommodating cavity 21 and the second accommodating cavity 31, and a limiting plate 52 is installed in each installation groove 51. The rear ends of the first guide rail 1 and the second guide rail 2 are fixed with extension plates 53, and the two extension plates 53 can respectively abut against the corresponding limiting plates 52 to limit the rising height of the first guide rail 1 and the second guide rail 2, respectively.

[0058] like Figure 3 , Figure 4 and Figure 5 As shown, the limit plate 52 of this embodiment is used to limit the rising height of the extension plate 53 to prevent the first guide rail 1 and the second guide rail 2 from rising too much or not rising enough, resulting in misalignment or instability of the first guide groove 11, the second guide groove 22 and the third guide groove 32; wherein, the number of the limit plates 52 can be multiple; in actual application, threaded holes are formed on the limit plates 52 and the extension plates 53. When the limit plates 52 and the extension plates 53 are abutted, screws can be used to connect with the threaded holes so that the extension plates 53 are fixed to the corresponding limit plates 52 to ensure the stability of the rails after splicing. Specifically, during the extension of the guide rails, when the front of the first guide rail 1 and the second guide rail 2 When the ends extend out of the first accommodating cavity 21 and the second accommodating cavity 31 in turn, the two lifting devices 4 push the first guide rail 1 and the second guide rail 2 to rise respectively. When the extension plate 53 rises to abut against the corresponding limit plate 52, the lifting device 4 is lifted into place, that is, the first guide groove 11, the second guide groove 22 and the third guide groove 32 are smoothly aligned and abutted, and then the limit plate 52 and the extension plate 53 are fixedly connected with screws to ensure the stability, smoothness and continuity of the overall guide rail system; when the guide rail needs to be retracted, the screws are removed, the lifting device 4 releases the lifting support, and the first guide rail 1 and the second guide rail 2 are retracted into the third guide rail 3. The structure is compact, occupies little space, and is easy to use.

[0059] Further, as a preferred embodiment, a first bottom wheel 61 is installed at the rear end of each extension plate 53, and each first bottom wheel 61 abuts against the inner wall of the first accommodating cavity 21 and the second accommodating cavity 31 respectively; Figure 4As shown, in actual application, during the extension and retraction process of the first guide rail 1 and the second guide rail 2, the two extension plates 53 slide in the first accommodating cavity 21 and the second accommodating cavity 31 respectively through the first bottom wheel 61, thereby reducing the friction between the extension plate 53 and the inner walls of the first accommodating cavity 21 and the second accommodating cavity 31, so that the first guide rail 1 and the second guide rail 2 can move more smoothly and smoothly during the extension and retraction or docking process, thereby improving the adjustment efficiency and stability; wherein, the number of the first bottom wheels 61 can be two or more.

[0060] Further, as a preferred embodiment, the front end bottom of the second guide rail 2 and the third guide rail 3 are both equipped with a second bottom wheel 62, and each second bottom wheel 62 can abut against the bottom of the corresponding first guide rail 1 and the second guide rail 2; Figure 4 As shown, in actual application, during the extension and retraction process of the first guide rail 1 and the second guide rail 2, the bottom of the extended section is in smooth and stable contact with the adjacent second bottom wheel 62, which reduces the direct friction and collision between the first guide rail 1, the second guide rail 2 and the third guide rail 3, thereby improving the adjustment efficiency and stability and extending the service life of the guide rails; wherein, the number of the second bottom wheels 62 can be two or more.

[0061] Further, as a preferred embodiment, two centering wheels 63 are respectively installed at the front ends of the second guide rail 2 and the third guide rail 3, and each centering wheel 63 abuts against the side walls of the corresponding first guide rail 1 and the second guide rail 2; Figure 3 and Figure 4 As shown, in actual application, during the extension and retraction process of the first guide rail 1 and the second guide rail 2, the opposite sides of the telescopic sections of the first guide rail 1 and the second guide rail 2 are respectively abutted against two adjacent centering wheels 63. Under the action of the two oppositely arranged centering wheels 63, not only the direct friction and collision between the first guide rail 1, the second guide rail 2 and the third guide rail 3 are further reduced, but also the centers of the first guide rail 1, the second guide rail 2 and the third guide rail 3 can always be kept in line, thereby avoiding the problem of loose docking or poor operation due to offset or tilt, improving the docking accuracy, stability and continuity, and enhancing the practicality and application scope of the telescopic guide rail.

[0062] In this embodiment, a first pushing member 71 is fixed to the front end of the first guide rail 1, a second pushing member 72 is fixed to the front end of the second guide rail 2, and a positioning member 73 is fixed to the front end of the third guide rail 3. The first pushing member 71 can abut against the second pushing member 72, and the second pushing member 72 can abut against the positioning member 73.

[0063] In this embodiment, the first pushing member 71 and the second pushing member 72 abut against each other, and the second pushing member 72 and the positioning member 73 abut against each other, so as to prevent the first guide rail 1 and the second guide rail 2 from being unable to be smoothly pulled out next time due to excessive retraction, and when the first pushing member 71 and the second pushing member 72 abut against each other, pulling the first pushing member 71 can drive the second pushing member 72, thereby driving the second guide rail 2 to be retracted into the second accommodating cavity 31;

[0064] like Figure 3 , Figure 4 and Figure 6 As shown, specifically, when the guide rail needs to be extended, the first pushing member 71 and the second pushing member 72 are pushed in sequence to drive the first guide rail 1 and the second guide rail 2 to extend from the first accommodating cavity 21 and the second accommodating cavity 31 respectively. Under the action of the jacking device 4, the first guide groove 11, the second guide groove 22 and the third guide groove 32 are aligned and abutted, thereby achieving the purpose of extending the guide rail, with a simple structure and convenient operation; when the guide rail needs to be retracted, the jacking device 4 releases the support for the first guide rail 1 and the second guide rail 2, and under the action of its own gravity Under the action, the first guide rail 1 and the second guide rail 2 are reset to a non-abutment state, and then the first pushing member 71 is pulled to drive the first guide rail 1 to be retracted into the first accommodating chamber 21. When the first pushing member 71 and the second pushing member 72 abut against each other, the first pushing member 71 transmits the second pushing member 72 to drive the second guide rail 2 to be retracted into the second accommodating chamber 31. When the second pushing member 72 and the positioning member 73 abut against each other, the retraction is completed, and finally the first guide rail 1 and the second guide rail 2 are accommodated in the third guide rail 3, with a compact structure and simple operation.

[0065] Further, as a preferred embodiment, the number of third guide rails 3 is two or more, each third guide rail 3 is arranged in sequence along the length direction and penetrates into the second accommodating cavity 31 of the adjacent third guide rail 3, and the second guide rail 2 is penetrated into the second accommodating cavity 31 located at the front end third guide rail 3; a jacking device 4 is installed at the front end of each third guide rail 3, and each jacking device 4 is also configured to push the corresponding third guide rail 3 to rise when each third guide rail 3 extends out of the adjacent second accommodating cavity 31 in sequence, so as to align each third guide groove 32.

[0066] like Figure 1As shown, the present embodiment adopts two or more third guide rails 3 and nests them in sequence along the length direction, so that the number of third guide rails 3 can be flexibly increased or decreased, so that the overall length of the telescopic guide rail can be flexibly adjusted according to actual needs, with higher flexibility. Specifically, during installation, according to the preset guide rail length, a corresponding number of third guide rails 3 are taken, and each third guide rail 3 is arranged in sequence along the length direction and can be movably inserted into the second accommodating cavity 31 of the adjacent third guide rails 3, while the second guide rail 2 is inserted into the second accommodating cavity 31 of the third guide rail 3 arranged at the front end, thereby enhancing the adjustability of the overall length of the guide rail. In actual application, a jacking device 4 is installed at the front end of each third guide rail 3, and an extension plate 53 is installed at the rear end. When the guide rail needs to be extended, the first guide rail 1, the second guide rail 2 and the third guide rails 3 located in the middle section are extended in sequence, and then the jacking devices 4 push the corresponding first guide rail 1, the second guide rail 2 and the third guide rails 3 to rise respectively. When the extension plate 53 rises to abut against the corresponding limit plate 52, the jacking device 4 is lifted into place, that is, the first guide groove 11, the second guide groove 22 and the third guide grooves 32 are smoothly aligned and abutted, and then the limit plate 52 and the extension plate 53 are fixedly connected by screws; when the guide rail needs to be retracted, the screws are removed, the jacking device 4 releases the jacking support, and the first guide rail 1, the second guide rail 2 and the third guide rails 3 located in the middle section are retracted into the third guide rail 3 located at the rear end. The structure is compact, the space occupied is small, and it is easy to use.

[0067] In this embodiment, a traction device 81, a traction column 82 and a traction rope 83 are also included. The traction device 81 is installed on the third guide rail 3, the traction column 82 is installed on the front end of the first guide rail 1, one end of the traction rope 83 is connected to the traction column 82, and the other end is connected to the traction device 81. The traction device 81 is used to reel in or unreel the traction rope 83; Figure 6 As shown, in actual application, a winch can be used as the traction device 81. When the guide rail needs to be retracted, the lifting device 4 releases the support for the first guide rail 1 and the second guide rail 2. Under the action of their own gravity, the first guide rail 1 and the second guide rail 2 are reset to the first guide groove 11, the second guide groove 22 and the third guide groove 32 are in a non-abutment state, and then the winch is started to reel in the traction rope 83, thereby pulling the first guide rail 1 back into the first accommodating cavity 21. When the first pushing member 71 and the second pushing member 72 abut against each other, the second guide rail 2 is pulled to move together to retract the second guide rail 2 into the second accommodating cavity 31. When the second pushing member 72 and the positioning member 73 abut against each other, the retraction action is completed; when the guide rail needs to be extended, as the first guide rail 1 and the second guide rail 2 are extended, the winch starts to unwind the traction rope 83 to perform the next retraction action.

[0068] Further, as a preferred embodiment, guide wheels 84 are installed on the first guide rail 1, the second guide rail 2 and the third guide rail 3. One end of the traction rope 83 is connected to the traction column 82, and the other end is passed around the guide wheels 84 on the first guide rail 1, the second guide rail 2 and the third guide rail 3 in sequence and connected to the traction device 81; the guide wheel 84 is used to guide and fix the traction rope 83, such as Figure 3 , Figure 4 and Figure 6 As shown, in actual application, one end of the traction rope 83 is connected to the traction column 82, and the other end is passed around each guide wheel 84 in turn and connected to the traction device 81, ensuring the smooth operation of the traction rope 83 during the winding process, avoiding failures caused by friction or entanglement, and improving the overall stability and reliability of the guide rail system.

[0069] Embodiment 2

[0070] The telescopic guide rail telescopic method includes the following steps in practical application:

[0071] S1. When the guide rail needs to be extended, the first pusher 71 and the second pusher 72 are pushed in sequence to drive the first guide rail 1 and the second guide rail 2 to extend from the first accommodating cavity 21 and the second accommodating cavity 31 respectively, so that the first guide groove 11, the second guide groove 22 and the third guide groove 32 are sequentially arranged and connected along the length direction, and the traction device 81 is idle to unwind the traction rope 83;

[0072] S2, the lifting device 4 pushes the corresponding first guide rail 1 and the second guide rail 2 to rise, so that the extension plate 53 abuts against the corresponding limit plate 52, so that the first guide groove 11, the second guide groove 22 and the third guide groove 32 are smoothly aligned and abutted, and then the extension plate 53 is fixed to the corresponding limit plate 52 with screws to complete the extension of the guide rail;

[0073] S3. When the guide rails need to be retracted, the screws are removed and the lifting device 4 releases the lifting support for the first guide rail 1 and the second guide rail 2. The first guide rail 1 and the second guide rail 2 are reset to a non-contact state between the first guide groove 11, the second guide groove 22 and the third guide groove 32 under their own gravity, and the extension plate 53 is separated from the corresponding limit plate 52.

[0074] S4. Use the traction device 81 to reel in the traction rope 83 to pull the first guide rail 1 back to the first accommodating chamber 21. When the first pushing member 71 and the second pushing member 72 abut against each other, pull the second guide rail 2 to move together to retract the second guide rail 2 into the second accommodating chamber 31. When the second pushing member 72 and the positioning member 73 abut against each other, the retraction action is completed.

[0075] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A telescopic guide rail, characterized in that: include: A first guide rail (1) and a second guide rail (2), wherein a first accommodating cavity (21) is formed on the second guide rail (2); the first guide rail (1) is arranged in the first accommodating cavity (21), and the first guide rail (1) can be extended or retracted into the first accommodating cavity (21); A first guide groove (11) and a second guide groove (22) are respectively formed on the first guide rail (1) and the second guide rail (2) along the length direction, and the first guide groove (11) and the second guide groove (22) are arranged in parallel; when the first guide rail (1) extends out of the first accommodating cavity (21), the first guide groove (11) and the second guide groove (22) are connected; The invention also comprises a lifting device (4), wherein the lifting device (4) is installed at the front end of the second guide rail (2), and the lifting device (4) is configured to push the first guide rail (1) upward when the first guide rail (1) extends out of the first accommodating cavity (21), so as to align the first guide groove (11) with the second guide groove (22).

2. The telescopic guide rail according to claim 1, characterized in that: It also comprises a third guide rail (3), wherein a second accommodating cavity (31) is formed on the third guide rail (3); the second guide rail (2) is arranged in the second accommodating cavity (31), and the second guide rail (2) can be extended or retracted into the second accommodating cavity (31); A third guide groove (32) is formed on the third guide rail (3) along the length direction, and the third guide groove (32) is arranged parallel to the second guide groove (22); when the second guide rail (2) extends out of the second accommodating cavity (31), the second guide groove (22) is connected with the third guide groove (32); A lifting device (4) is installed at the front end of the third guide rail (3), and the lifting device (4) is also configured to push the second guide rail (2) to rise when the second guide rail (2) extends out of the second accommodating cavity (31), so as to align the second guide groove (22) with the third guide groove (32).

3. The telescopic guide rail according to claim 2, characterized in that: The front ends of the second guide rail (2) and the third guide rail (3) are both formed with mounting grooves (51), each of the mounting grooves (51) is respectively connected to the first accommodating cavity (21) and the second accommodating cavity (31), a limiting plate (52) is installed in each of the mounting grooves (51), and the rear ends of the first guide rail (1) and the second guide rail (2) are both fixed with extension plates (53), and the two extension plates (53) can respectively abut against the corresponding limiting plates (52) to respectively limit the rising height of the first guide rail (1) and the second guide rail (2).

4. The telescopic guide rail according to claim 3, characterized in that: A first bottom wheel (61) is installed at the rear end of each extension plate (53), and each first bottom wheel (61) abuts against the inner wall of the first accommodating cavity (21) and the inner wall of the second accommodating cavity (31) respectively.

5. The telescopic guide rail according to claim 4, characterized in that: A second bottom wheel (62) is installed at the bottom of the front end of each of the second guide rail (2) and the third guide rail (3), and each of the second bottom wheels (62) can respectively abut against the bottom of the corresponding first guide rail (1) and second guide rail (2).

6. The telescopic guide rail according to claim 5, characterized in that: Two centering wheels (63) arranged opposite to each other are respectively installed at the front ends of the second guide rail (2) and the third guide rail (3), and each centering wheel (63) is respectively in contact with the side walls of the corresponding first guide rail (1) and second guide rail (2).

7. The telescopic guide rail according to claim 6, characterized in that: A first pushing member (71) is fixed to the front end of the first guide rail (1), a second pushing member (72) is fixed to the front end of the second guide rail (2), and a positioning member (73) is fixed to the front end of the third guide rail (3); the first pushing member (71) can abut against the second pushing member (72), and the second pushing member (72) can abut against the positioning member (73).

8. The telescopic guide rail according to claim 7, characterized in that: The number of the third guide rails (3) is two or more, and each of the third guide rails (3) is arranged in sequence along the length direction and is inserted into the second accommodating cavity (31) of the adjacent third guide rail (3), and the second guide rail (2) is inserted into the second accommodating cavity (31) located at the front end of the third guide rail (3); a lifting device (4) is installed at the front end of each of the third guide rails (3), and each of the lifting devices (4) is also configured to push the corresponding third guide rail (3) to rise when each of the third guide rails (3) extends out of the adjacent second accommodating cavity (31) in sequence, so as to align each of the third guide grooves (32).

9. The telescopic guide rail according to claim 7, characterized in that: It also comprises a traction device (81), a traction column (82) and a traction rope (83), wherein the traction device (81) is mounted on the third guide rail (3), the traction column (82) is mounted on the front end of the first guide rail (1), one end of the traction rope (83) is connected to the traction column (82), and the other end is connected to the traction device (81), and the traction device (81) is used for winding or unwinding the traction rope (83).

10. The telescopic guide rail extension method according to any one of claims 1 to 9, characterized in that: The telescoping method specifically comprises the following steps: S1. When the guide rail needs to be extended, the first guide rail (1) is pulled out from the first accommodating cavity (21), so that the first guide groove (11) and the second guide groove (22) are arranged in sequence and connected along the length direction; S2, the lifting device (4) pushes the first guide rail (1) upward, so that the first guide groove (11) is aligned with and abuts against the second guide groove (22); S3. When the guide rail needs to be retracted, the lifting device (4) releases the lifting support for the first guide rail (1), and the first guide rail (1) is reset under the action of its own gravity to a state where the first guide groove (11) and the second guide groove (22) are not in contact; S4. Push the first guide rail (1) to retract into the first accommodating cavity (21).

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