Telescopic guide rail

Abstract

The utility model discloses a telescopic guide rail which comprises a first guide rail and a second guide rail, and a first containing cavity is formed in the second guide rail. 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 can be aligned to pass through a nested movable penetrating structure composed of the first guide rail and the second guide rail. And the multifunctional folding chair can be extended to meet the use requirements, is convenient to adjust and use, can be contracted to reduce the occupied space when not in use, and is high in portability.

Description

Technical Field

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

[0002] An aircraft catapult is a device specifically designed for deploying and operating drones. It is commonly used in the military, security, and reconnaissance fields, and is responsible for quickly and efficiently deploying drones in emergency or specific mission scenarios to obtain intelligence, perform surveillance, conduct reconnaissance, or perform other tasks. Traditional drone takeoff methods, such as runway takeoff or hand-throw takeoff, are mature and widely used, but are often limited by site, time, and environmental conditions, making it difficult to 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 takeoff methods and becoming an important tool for achieving rapid drone takeoff.

[0003] However, the telescopic drone ejection device in the prior art, such as the utility model patent with publication number CN111824443B, discloses a telescopic drone ejection device. By retracting 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. The device has poor portability and is inconvenient to use. In addition, the length of the track is slightly adjustable, resulting in poor practicality and a narrow scope of application. Utility Model Content

[0004] The purpose of the utility model is to provide a telescopic guide rail 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 a small adjustability of the track length, is poor in practicality, and has a narrow scope of application.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A telescopic guide rail, comprising:

[0007] a first guide rail and a second guide rail, wherein the second guide rail is formed with a first accommodating cavity; the first guide rail is disposed 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 parallel to 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 up when the first guide rail extends out of the first accommodating cavity, so that the first guide groove is aligned with the second guide groove.

[0010] According to the above 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, meeting the use requirements and being easy to adjust and use, but also can retract the first guide rail into the first accommodating cavity when not in use, with a compact structure, reduced space occupation and high portability. Moreover, when the first guide rail is extended through the jacking device, 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 applicability of the telescopic guide rail, and facilitates flexible application in different scenarios.

[0011] Furthermore, it further includes a third guide rail, wherein a second accommodating cavity is formed on the third guide rail; the second guide rail is disposed 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 its length, and the third guide groove is arranged parallel to 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 further configured to push the second guide rail to rise when the second guide rail extends out of the second accommodating cavity, so that the second guide groove is aligned 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 is used to increase the adjustability of the length of the telescopic guide rail, which 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 are 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 is small and the portability is high. Moreover, 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, which 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 applicability of the telescopic guide rail, and facilitates flexible application in different scenarios.

[0015] Furthermore, the front ends 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, and a limiting plate is installed in each of the installation grooves. 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 limit the rising height of the first guide rail and the second guide rail respectively.

[0016] According to the above 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, high practicality and reliability, and can better meet the needs of various application scenarios.

[0017] Furthermore, a first bottom wheel is installed at the rear end of each extension plate, and each first bottom wheel 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 extended or retracted to the first accommodating cavity and the second accommodating cavity in turn, 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, a second bottom wheel is installed at the bottom of the front end of each of the second guide rail and the third guide rail, and each of the second bottom wheels can respectively abut against the bottom of the corresponding first guide rail and 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 are in smooth and stable contact with the corresponding first guide rail and the second guide rail respectively, 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 centering wheel 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 extended or retracted to the first accommodating cavity and the second accommodating cavity in sequence, 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 the centers of the first guide rail, the second guide rail and the third guide rail can always be kept in line during the process of extending or retracting the first guide rail and the second guide rail, 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 range 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 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 pulled out smoothly 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 is passed through the second accommodating cavity of the adjacent third guide rail, and the second guide rail is passed through the second accommodating cavity of the third guide rail at the front end; 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 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 inserted into the second accommodating cavity of the adjacent third guide rail, and the second guide rail is inserted into 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 jacking device is provided between two adjacent third guide rails. When each third guide rail extends out of each second accommodating cavity in turn, each jacking 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, expanding the practicality and applicability of the telescopic guide rail, and enabling it to 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 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] Furthermore, guide wheels are installed on the first guide rail, the second guide rail and the third guide rail. One end of the traction rope is connected to the traction column, and the other end passes around the guide wheels on the first guide rail, the second guide rail and the third guide rail in turn and is connected to the traction device.

[0030] According to the above technical means, the guide wheel is used to guide and fix the traction rope. During installation, one end of the traction rope is firmly connected to the traction column, and the other end passes around each guide wheel in turn and is connected to the traction device. The guide wheel not only ensures the smooth operation of the traction rope during the extension and retraction process, avoids failures caused by friction or entanglement, but also improves the overall stability and reliability of the guide rail system.

[0031] Beneficial effects achieved by this utility model:

[0032] 1. The utility model adopts a nested movable penetrating 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, meeting the use requirements and being easy to adjust and use, but also can be retracted into the second guide rail when not in use, with a compact structure, reduced space occupation and high portability.

[0033] 2. The utility model uses the jacking device to achieve that when the first guide rail is extended, the first guide groove and the second guide groove can be smoothly and accurately docked together after being extended, forming a smooth, continuous and stable guide rail system, 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 rails, and facilitating flexible application in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a partial schematic diagram of the three-dimensional structure of the telescopic guide rail of the utility model;

[0035] 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;

[0036] Figure 3 This is an exploded view of the second guide rail of the utility model being separated from the first guide rail;

[0037] Figure 4 This is an exploded view of the third guide rail of the utility model being separated from the second guide rail;

[0038] Figure 5 It is a partial schematic diagram of the second guide rail and the first guide rail of the utility model being spliced ​​together;

[0039] Figure 6 It is a side view of the connection between the traction device, traction rope, first guide rail, second guide rail and third guide rail of the utility model.

[0040] 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.

[0041] The accompanying drawings are for illustrative purposes only and should not be construed as limitations on this patent. To better illustrate this embodiment, some components of the accompanying drawings may be omitted, enlarged, or reduced in size and do not represent the actual dimensions of the product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted from the accompanying drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limitations on this patent. DETAILED DESCRIPTION

[0042] It should be noted that, unless there is a conflict, the embodiments in this application and the technical features in the embodiments can be combined with each other. The detailed description in the specific embodiments should be understood as an explanation of the purpose of this application and should not be regarded as an improper restriction on this application.

[0043] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions 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 intended to limit the scope of the present application.

[0044] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, 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 this application, unless otherwise specified, "multiple" means two or more.

[0045] 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 integrated connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0046] In the embodiments of the present application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0047] In the embodiments of this 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 this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0048] The technical solution of the present invention is described in detail below with reference to the accompanying drawings.

[0049] Example 1

[0050] 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 jacking device 4, the jacking device 4 is installed at the front end of the second guide rail 2, and the jacking 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.

[0051] In this embodiment, the telescopic guide rail has a telescopic function through the nested movable penetrating structure composed of the first guide rail 1 and the second guide rail 2, so as 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 the second guide groove 22 and abuts (as shown in FIG. Figure 5 As shown), a smooth, continuous and stable guide rail system is formed, which realizes the extension of the telescopic guide rail, meets the use requirements of different scenarios, and has high flexibility. In actual application, the end of the first guide rail 1 extending out of the first accommodating cavity 21 is set 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 end point of the ejection. When the ejection is working, the ejection trolley is installed on the inclined guide rail and connected to the guide groove formed by the connection of the first guide groove 11 and the second guide groove 22. The ejection trolley can drive the unmanned vehicle. 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, the structure is compact and easy to use; wherein, the lifting device 4 can be a combination of a screw and a nut, or a cylinder.

[0052] 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.

[0053] 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 greater 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 in the figure), 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. 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 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 easy to use.

[0054] In this embodiment, the front ends of the second guide rail 2 and the third guide rail 3 are formed with mounting grooves 51, and each mounting groove 51 is respectively connected to the first accommodating cavity 21 and the second accommodating cavity 31. A limiting plate 52 is installed in each mounting groove 51, and the rear ends of the first guide rail 1 and the second guide rail 2 are fixed with extension plates 53. 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.

[0055] 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 into place, resulting in misalignment or instability of the first guide slot 11, the second guide slot 22 and the third guide slot 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 abut, 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 track 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 jacking 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 jacking 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 the screws to ensure the stability, smoothness and continuity of the entire guide rail system; 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 and the second guide rail 2 are retracted into the third guide rail 3. It has a compact structure, occupies little space, and is easy to use.

[0056] Furthermore, as a preferred embodiment, the rear end of each extension plate 53 is equipped with a first bottom wheel 61, and each first bottom wheel 61 abuts against the inner wall of the first accommodating cavity 21 and the second accommodating cavity 31 respectively; as shown in 3 and 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.

[0057] Furthermore, as a preferred embodiment, the front 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 their extended sections are in smooth and stable contact with the adjacent second bottom wheels 62, reducing 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 second bottom wheels 62 can be two or more.

[0058] Furthermore, 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 respectively abut 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 the same 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 range of the telescopic guide rail.

[0059] 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.

[0060] 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. 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.

[0061] 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. The structure is simple and the operation is convenient. 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, the jacking device 4 releases the support for the first guide rail 1 and the second guide rail 2. Under the action of back-moving mechanism, 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.

[0062] Furthermore, 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 is passed through the second accommodating cavity 31 of the adjacent third guide rail 3, and the second guide rail 2 is passed through the second accommodating cavity 31 located at the front end of the 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.

[0063] like Figure 1As shown, this 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 arranged at the front end of the third guide rail 3, thereby enhancing the adjustability of the overall length of the guide rail. In actual application, the front end of each third guide rail 3 is installed with a jacking device 4, and the rear end is installed with an extension plate 53 When the guide rails need 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 with the screws; when the guide rails need 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 at the rear end. The structure is compact, occupies little space, and is easy to use.

[0064] In this embodiment, the traction device 81, the traction column 82 and the 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 a 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. 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.

[0065] Furthermore, 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 through 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 wheels 84 are 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.

[0066] Example 2

[0067] The telescopic guide rail telescopic method includes the following steps in actual application:

[0068] S1. When the guide rail needs to be extended, the first pushing member 71 and the second pushing member 72 are pushed in sequence, thereby driving 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. At the same time, the traction device 81 is idle to unwind the traction rope 83.

[0069] S2. The lifting device 4 pushes the corresponding first guide rail 1 and second guide rail 2 upward, so that the extension plate 53 abuts 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. Then, the extension plate 53 is fixed to the corresponding limit plate 52 with screws to complete the guide rail extension;

[0070] 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 under their own gravity to a state where the first guide groove 11, the second guide groove 22 and the third guide groove 32 are not in contact, and the extension plate 53 is separated from the corresponding limit plate 52.

[0071] S4. Use the traction device 81 to rewind 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.

[0072] The serial numbers of the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this application and do not limit the scope of the patent of this application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this 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 includes a lifting device (4), which is installed at the front end of the second guide rail (2). 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 includes 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 to 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) upward 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), and each mounting 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 mounting groove (51). 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 front end bottom of each of the second guide rail (2) and the third guide rail (3), and each second bottom wheel (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) abuts against 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) of the third guide rail (3) at the front end; 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 further 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: The invention 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 according to claim 9, characterized in that: 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).

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