Mechanical linkage rotary locking mechanism for telescopic handrail

Abstract

The invention discloses a mechanical linkage rotary locking mechanism for a telescopic handrail, which comprises n multi-stage sleeves arranged on a driving mechanism, and n is greater than or equal to 1; a locking mechanism is arranged on the multi-stage sleeve, and when the multi-stage sleeve is in an unfolded state, the locking mechanism is used for locking or unlocking the multi-stage sleeve; and when the multi-stage sleeve is in the unfolded state, the driving mechanism is used for driving the multi-stage sleeve to move, so that the multi-stage sleeve is locked or unlocked through the locking mechanism. Through the structural design, the telescopic handrail can be self-locked after being unfolded, so that after the second driving device stops supplying driving force, the telescopic handrail does not retract and fall back under the condition of self weight or personnel leaning, and therefore, after the telescopic handrail is locked, the second driving device can be closed, the energy consumption of the telescopic handrail is reduced, and the service life of the telescopic handrail is prolonged. When the telescopic handrail is folded, due to the semi-locking state of the locking mechanism, the telescopic handrail can be prevented from falling suddenly to frighten or injure people standing near the telescopic handrail.

Description

Technical Field

[0001] This invention relates to the field of platform protection technology, and more specifically, to a mechanical linkage rotation locking mechanism for telescopic railings. Background Technology

[0002] Platform safety measures typically include platform screen doors fixed to the platform and retractable safety railings hidden beneath the platform. Retractable safety railings generally suffer from three major drawbacks: difficult construction, complex structure, and difficult maintenance. To address these shortcomings, the applicant has researched and designed a shallow pit-type platform safety protection system, ensuring that the excavation depth of the underground trench does not exceed 800mm. Because this protection system is designed specifically for platform safety, it typically only retracts into the underground trench during boarding to avoid obstructing passengers. Therefore, the protection system is deployed most of the time.

[0003] The aforementioned design employs a telescopic structure. After the telescopic railing is extended, a drive mechanism is needed to continuously provide driving force to prevent it from falling back into the underground trench due to people leaning on it or its own weight. Continuous driving force supply leads to energy waste. For example, when pneumatic telescopic is used, a continuous supply of gas pressure is required to prevent the telescopic railing from falling back. How to lock the telescopic railing in the extended state and unlock it when it is retracted, thereby avoiding the drive mechanism from continuously providing driving force and reducing the energy consumption of the telescopic railing, is the technical problem that this application aims to solve. Summary of the Invention

[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, the present invention provides a mechanical linkage rotation locking mechanism for telescopic railings, comprising: n multi-stage sleeves disposed on a drive mechanism, wherein n≥1; The multi-stage bushing is equipped with a locking mechanism, which is used to lock or unlock the multi-stage bushing when it is in the unfolded state. When the multi-stage sleeve is in the deployed state, the drive mechanism is used to drive the multi-stage sleeve to move, so that the multi-stage sleeve is locked or unlocked by the locking mechanism.

[0006] Preferably, the driving mechanism is a rotating mechanism, which is used to drive two adjacent multi-stage bushings to rotate synchronously.

[0007] Preferably, the rotating mechanism includes a first driving device, a transmission device, and a linkage device, with the multi-stage sleeve movably connected to the linkage device, and the linkage device connected to the first driving device via the transmission device.

[0008] Preferably, the rotating mechanism further includes a housing, the first driving device, the transmission device and the linkage device are all located inside the housing, the multi-stage sleeve penetrates the housing, and the connection between the linkage device and the multi-stage sleeve is located inside the housing.

[0009] Preferably, the multi-stage sleeve includes a bottom sleeve, m intermediate sleeves, and a top sleeve, where m ≥ 0; the outer wall of the bottom sleeve is movably connected to the drive mechanism; the top sleeve is connected to the bottom sleeve through the intermediate sleeves. The locking mechanism is located at the top of the bottom sleeve, both ends of the middle sleeve, and the bottom of the top sleeve; When the multi-stage bushing is in the deployed state, the top of the bottom bushing and the bottom of the intermediate bushing are locked or unlocked to each other by a locking mechanism; the top of the intermediate bushing and the bottom of the top bushing are locked or unlocked to each other by a locking mechanism.

[0010] Preferably, the locking mechanism includes a piston head and a locking element; the piston head is disposed at the bottom of the intermediate sleeve and / or the bottom of the top sleeve, and the locking element is disposed at the bottom of the top sleeve and / or the top of the intermediate sleeve. When the multi-stage sleeve is in the unfolded state, the piston head abuts against the locking member, and the driving mechanism is used to drive the piston head and the locking member to generate relative movement, thereby realizing the locking and unlocking of the multi-stage sleeve.

[0011] Preferably, the piston head is a tubular structure, including a connecting section, an insertion section, and a piston section. The connecting section and the piston section are located at opposite ends of the insertion section. The outer diameter of the insertion section near the connecting section is smaller than the outer diameter of the insertion section near the piston section. The piston head is connected to the bottom of the intermediate sleeve or the bottom of the top sleeve through the connecting section. A limiting post is provided on the insertion section, and the limiting post extends from the outer wall of the insertion section away from the insertion section. When the multi-stage sleeve is in the unfolded state, the limiting post abuts against the locking member.

[0012] Preferably, the locking member is a tubular structure, disposed at the top of the bottom sleeve or the top of the middle sleeve. The locking member is provided with a rotating slot, which is arranged along the circumference of the locking member. The rotating slot consists of an opening slot, a locking slot, and an unlocking slot. The opening of the opening slot is located at the bottom of the locking member. The locking slot and the unlocking slot are both connected to the opening slot and are arranged opposite to each other. When the multi-stage sleeve is in the unfolded state, the limiting post is located in the opening groove; When the multi-stage sleeve is locked, the limiting pin moves from the opening slot to the locking slot; When the multi-stage sleeve is unlocked, the limit post moves from the locking slot to the unlocking slot.

[0013] Preferably, the bottom surface of the locking member has a guide surface, which is used to guide the limiting post to move into the opening groove.

[0014] Preferably, the locking member has a retaining ring at the end away from the rotating slot, a limiting block is provided on the outer side wall of the locking member, the locking groove extends from the opening groove to the end of the locking member away from the opening groove, and a crimping joint is provided at the top of the bottom sleeve and the top of the middle sleeve, the crimping joint being used to fix the locking member at the top of the bottom sleeve or the top of the middle sleeve.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: Through the above structural design, the telescopic railing can self-lock after it is extended. Therefore, after the second drive device stops supplying driving force, the telescopic railing will not retract and fall back under its own weight or when people are holding onto it. This allows the second drive device to be turned off after the telescopic railing is locked, reducing the energy consumption of the telescopic railing. When the telescopic railing is retracted, the "semi-locked" state of the locking mechanism can prevent the telescopic railing from suddenly falling and startling or injuring people standing near the telescopic railing.

[0016] The mechanical linkage rotation locking mechanism for telescopic railings described in this invention, other advantages, objectives and features of the invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of the invention. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the telescopic guardrail described in this invention.

[0018] Figure 2 This is a schematic diagram of a passively expandable multi-stage bushing.

[0019] Figure 3 This is a cross-sectional view of the locking mechanism between the intermediate sleeve and the top sleeve.

[0020] Figure 4 A schematic diagram of a multi-stage sleeve with active telescopic movement.

[0021] Figure 5 This is a schematic diagram of a rotating mechanism.

[0022] Figure 6 This is an exploded view of the locking mechanism.

[0023] Figure 7 This is the main view of the locking mechanism in its locked state.

[0024] Figure 8 This is a schematic diagram of the locking mechanism in its locked state.

[0025] Figure 9 The main view showing the locking mechanism in its unlocked state.

[0026] Figure 10 A schematic diagram of the structure for releasing the locking mechanism from its locked state.

[0027] Figure 11 This is a schematic diagram of the intermediate sleeve.

[0028] Figure 12 This is a schematic diagram of the internal structure of the intermediate sleeve.

[0029] In the diagram: 1. Multi-stage sleeve, 11. Bottom sleeve, 12. Intermediate sleeve, 13. Top sleeve, 2. Drive mechanism, 21. First drive device, 22. Transmission device, 23. Linkage device, 24. Housing, 3. Crossbar, 4. Piston head, 41. Connecting section, 42. Insertion section, 43. Piston section, 44. Limiting post, 5. Locking element, 51. Opening groove, 52. Locking groove, 53. Unlocking groove, 54. Snap ring, 55. Limiting block, 6. Press joint. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0031] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0032] like Figures 1-12 As shown, the present invention provides a mechanical linkage rotation locking mechanism for telescopic railings, comprising: n multi-stage sleeves 1 disposed on a drive mechanism 2, wherein n≥1, preferably, it further comprises a crossbar 3 disposed on the top of the multi-stage sleeves 1, the crossbar 3 connecting the n multi-stage sleeves 1 into a whole, the crossbar 3 can be used as a handrail after the telescopic railing is raised, and can also serve to connect the multi-stage sleeves 1 in series, so that the multi-stage sleeves 1 connected to the same crossbar 3 can be raised and lowered synchronously; The multi-stage sleeve 1 is equipped with a locking mechanism. When the multi-stage sleeve 1 is in the unfolded state, under the drive of the drive mechanism 2, the two adjacent upper and lower sleeves (located on the same multi-stage sleeve 1) can be locked by the locking mechanism, or the locking mechanism can be released. When the multi-stage sleeve 1 is in the unfolded state, the driving mechanism 2 is used to drive the multi-stage sleeve 1 to move, so that the multi-stage sleeve 1 is locked or unlocked by the locking mechanism.

[0033] Among the n multi-stage sleeves, there are at least t multi-stage sleeves that can be actively extended and retracted, where t≥0; When t=0, there are no active telescopic multi-stage sleeves, and all multi-stage sleeves 1 are passive telescopic multi-stage sleeves. At this time, at least one second drive device that can realize the telescopic extension and retraction of multi-stage sleeves 1 should be set. The second drive device can be a telescopic commercially available device connected to the crossbar 3, such as a pneumatic or hydraulic telescopic device, so as to realize the raising and lowering of the telescopic railing. When t≥1, the multi-stage sleeve 1 is divided into an actively telescopic multi-stage sleeve and a passively telescopic multi-stage sleeve (which moves synchronously under the pull of the crossbar 3). The structures of the actively telescopic multi-stage sleeve and the passively telescopic multi-stage sleeve can be the same. The difference is that the actively telescopic multi-stage sleeve is connected to the second drive device. The second drive device is a commercially available device that can drive the actively telescopic multi-stage sleeve to unfold or retract, and is used to realize the lifting and lowering of the telescopic railing. See the following implementation method for details.

[0034] When the telescopic guardrail is in use, the second drive device drives the multi-stage sleeve 1 from the retracted state to the extended state. Under the action of the crossbar 3, the actively telescopic multi-stage sleeve moves the crossbar 3 upward, and the crossbar 3 moves the passively telescopic multi-stage sleeve connected to it upward, thereby achieving synchronous rising of the multi-stage sleeve 1. The same principle applies when transitioning from the extended state to the retracted state.

[0035] After the multi-stage sleeve 1 is deployed, the drive mechanism 2 drives the multi-stage sleeve 1 to move, so that the two adjacent sleeves of the multi-stage sleeve 1 lock each other. At this point, the telescopic railing is fully deployed and locked.

[0036] When the telescopic barrier is retracted, the drive mechanism 2 first drives the multi-stage sleeve 1 to move, so that each stage of the sleeve is in an unlocked state. At this time, under the action of the locking mechanism, the two adjacent stages of the sleeve are still in a "semi-locked" state. That is, a certain force needs to be applied to the horizontal bar 3 (or the multi-stage sleeve 1) in the vertical direction to make the multi-stage sleeve 1 retract. This prevents the telescopic barrier from suddenly falling under its own weight after being unlocked, startling or injuring people standing near the telescopic barrier.

[0037] After the multi-stage sleeve 1 is in the "semi-locked" state, the second drive device drives the actively telescopic multi-stage sleeve to retract, thereby releasing the actively telescopic multi-stage sleeve from the "semi-locked" state. The crossbar 3 applies a downward force to each passively telescopic multi-stage sleeve in the "semi-locked" state, thereby causing each multi-stage sleeve 1 to simultaneously release the "semi-locked" state and retract synchronously.

[0038] Under the action of the second drive device, the retraction speed of the active telescopic multi-stage sleeve can be controlled, thereby controlling the overall retraction speed of the telescopic guardrail and avoiding startling or injuring people standing near the telescopic guardrail.

[0039] As one of many embodiments, the drive mechanism 2 is a rotating mechanism used to drive two adjacent (left and right) multi-stage sleeves 1 to rotate synchronously. Using a rotating locking method can effectively reduce the range of motion of the drive mechanism 2. For example, when a vertically moving device is used as the drive mechanism 2, the drive mechanism 2 needs to be able to cooperate with the multi-stage sleeves 1 to expand or contract in the vertical direction, which would complicate the structure of the telescopic railing and hinder its maintenance. It should be noted that non-rotating drive mechanisms 2 should not be excluded from the scope of protection of this application.

[0040] Furthermore, the rotating mechanism includes a first driving device 21, a transmission device 22, and a linkage device 23. The multi-stage sleeve 1 is movably connected to the linkage device 23, and the linkage device 23 is connected to the first driving device 21 through the transmission device 22.

[0041] As one of many implementation methods, the first driving device 21 is a cylinder, the transmission device 22 is a push-pull rod, and the linkage device 23 is a connecting rod. The outer wall of the lowest level of the multi-stage sleeve 1 is provided with a turntable. The turntable of each multi-stage sleeve 1 is movably connected to the connecting rod through a bearing. The connecting rod is connected to the cylinder through a push-pull rod. One end of the push-pull rod is movably connected to the end of the connecting rod, and the other end is movably connected to the output end of the cylinder. When it is necessary to rotate the multi-stage sleeve 1, the cylinder will push the connecting rod through the push-pull rod, thereby rotating the multi-stage sleeve 1 through the connecting rod.

[0042] Furthermore, the rotating mechanism also includes a housing 24, within which the first drive device 21, transmission device 22, and linkage device 23 are all located. The multi-stage sleeve 1 penetrates the housing 24, and the connection point between the linkage device 23 and the multi-stage sleeve 1 is located within the housing 24. By enclosing the first drive device 21, transmission device 22, and linkage device 23 within the housing 24, unnecessary damage is avoided during long-term use, such as preventing dirt and impurities from entering the bearings of the turntable (used for connection with the connecting rod). Simultaneously, when the telescopic railing is in the extended state, the housing 24 can seal the underground trench, preventing dirt and impurities from entering it.

[0043] Further, the multi-level sleeve 1 includes a bottom sleeve 11, m intermediate sleeves 12, and a top sleeve 13, where m ≥ 0; the multi-level sleeve 1 has a nested structure, consisting of a bottom sleeve 11, intermediate sleeves 12, and a top sleeve 13 from the outside to the inside; the outer wall of the bottom sleeve 11 is movably connected to the drive mechanism 2; the top sleeve 13 is connected to the bottom sleeve 11 (when m = 0); or connected to the bottom sleeve 11 through intermediate sleeves 12 (when m ≥ 1). When m=0, the top sleeve 13 is installed inside the bottom sleeve 11, and the locking mechanism is a set, installed at the top of the bottom sleeve 11 and the bottom of the top sleeve 13. When m=1, the top sleeve 13 is disposed inside the middle sleeve 12, the middle sleeve 12 is disposed inside the bottom sleeve 11, and there are two sets of locking mechanisms, one of which is disposed at the top of the bottom sleeve 11 and the bottom of the middle sleeve 12, and the other is disposed at the top of the middle sleeve 12 and the bottom of the top sleeve 13; when the multi-stage sleeve 1 is in the unfolded state, the top of the bottom sleeve 11 and the bottom of the middle sleeve 12 are locked or unlocked by the locking mechanism; the top of the middle sleeve 12 and the bottom of the top sleeve 13 are locked or unlocked by the locking mechanism.

[0044] When m > 1, the top sleeve 13 is set inside the innermost middle sleeve 12, the two adjacent middle sleeves 12 are nested together, the outermost middle sleeve 12 is set inside the bottom sleeve 11, and the number of locking mechanisms is multiple sets.

[0045] Furthermore, the locking mechanism includes a piston head 4 and a locking element 5; the piston head 4 is disposed at the bottom of the intermediate sleeve 12 and / or the bottom of the top sleeve 13, and the locking element 5 is disposed at the bottom of the top sleeve 13 and / or the top of the intermediate sleeve 12. When the multi-stage sleeve 1 is in the unfolded state, the piston head 4 abuts against the locking member 5, and the driving mechanism 2 is used to drive the piston head 4 and the locking member 5 to generate relative movement, thereby realizing the locking and unlocking of the multi-stage sleeve 1.

[0046] As one of many implementation methods, the piston head 4 is a tubular structure, including a connecting section 41, an insertion section 42 and a piston section 43. To ensure sealing, an annular groove is provided on the outer wall of the piston section 43, and a sealing ring is provided in the annular groove. Thus, under the action of air pressure or hydraulic pressure, the sleeve can be extended and retracted, and internal medium leakage and impurity entry can be avoided.

[0047] The connecting section 41 and the piston section 43 are located at the two ends of the insertion section 42, respectively. The outer diameter of the insertion section 42 near the connecting section 41 is smaller than the outer diameter of the insertion section 42 near the piston section 43, making the outer wall of the insertion section 42 tapered. When the piston head 4 abuts against the locking member 5, the insertion section 42 can support the locking member 5, thereby strengthening the connection between the piston head 4 and the locking member 5. The piston head 4 is connected to the bottom of the intermediate sleeve 12 or the bottom of the top sleeve 13 through the connecting section 41. To facilitate the installation of the piston head 4, the connecting section 41 is usually provided with external threads, and the inner wall of the bottom of the intermediate sleeve 12 (or the top sleeve 13) is provided with internal threads. Quick disassembly and assembly are achieved through threaded connection. The insertion section 42 is provided with a limiting post 44, which extends from the outer wall of the insertion section 42 away from the insertion section 42. When the multi-stage sleeve 1 is in the unfolded state, the limiting post 44 abuts against the locking member 5.

[0048] As one of many embodiments, the locking member 5 is a tubular structure, disposed at the top of the bottom sleeve 11 or the top of the intermediate sleeve 12. The locking member 5 is provided with a rotating groove, which is arranged circumferentially along the locking member 5. The rotating groove consists of an opening groove 51, a locking groove 52, and an unlocking groove 53. The opening of the opening groove 51 is located at the bottom of the locking member 5. The locking groove 52 and the unlocking groove 53 are both connected to the opening groove 51 and are arranged opposite to each other. Usually, multiple rotating grooves are provided, so that the bottom of the locking member 5 has multiple openings. The side wall at the bottom is divided into multiple sheet-like structures that are easy to deform radially by the rotating grooves.

[0049] Taking the locking mechanism of the bottom sleeve 11 and the middle sleeve 12 as an example, when the multi-stage sleeve 1 is unfolded, the insertion section 42 of the piston head 4 will move upward from the bottom of the locking member 5. Because the outer wall of the insertion section 42 is conical, it can be inserted into the locking member 5. As the insertion section 42 continues to go deeper, the sheet-like structure cut by the rotating slot will be radially spread open, so that the insertion section 42 of the middle sleeve 12 (bottom) and the inner wall of the bottom sleeve 11 (top) are squeezed more tightly, increasing the friction between the two when they are not locked. Even if the second drive device no longer provides driving force for the active telescopic multi-stage sleeve, the telescopic railing will not fall back due to its own weight under the action of friction.

[0050] Taking the locking mechanism of the bottom sleeve 11 and the intermediate sleeve 12 as an example, When the intermediate sleeve 12 moves upward under the action of the second drive device, the piston head 4 moves upward in the bottom sleeve 11 until the limiting post 44 abuts against the inner top of the opening groove 51.

[0051] When the multi-stage sleeve 1 is in the unfolded state, the limiting post 44 is located in the opening groove 51; When the multi-stage sleeve 1 is locked, the rotating mechanism drives the bottom sleeve 11 to rotate. Under the action of the sealing ring on the piston section 43, the middle sleeve 12 will rotate. Because the top sleeve 13 is connected to the crossbar 3, the top sleeve 13 cannot rotate. The locking part 5 at the top of the middle sleeve 12 moves relative to the limiting post 44 at the bottom of the top sleeve 13.

[0052] During the rotation of the intermediate sleeve 12, the limiting post 44 of the top sleeve 13 moves from the opening groove 51 (of the locking member 5 of the intermediate sleeve 12) to the locking groove 52. When the limiting post 44 of the top sleeve 13 reaches the end of the locking groove 52 (of the locking member 5 of the intermediate sleeve 12), the intermediate sleeve 12 can no longer rotate. At this time, the locking member 5 of the bottom sleeve 11 moves relative to the limiting post 44 at the bottom of the intermediate sleeve 12. During the rotation of the bottom sleeve 11, the limiting post 44 of the middle sleeve 12 moves from the opening groove 51 (of the locking member 5 of the bottom sleeve 11) to the locking groove 52. When the limiting post 44 of the middle sleeve 12 reaches the end of the locking groove 52 (of the locking member 5 of the bottom sleeve 11), the rotation of the bottom sleeve 11 stops; thus, the linkage locking of each sleeve in the multi-level sleeve 1 is realized.

[0053] When piston section 43 is not equipped with a sealing ring, the principle is similar to that described above.

[0054] Furthermore, the locking groove 52 is usually a spiral groove, that is, the distance from the connection point of the locking groove 52 and the opening groove 51 to the top of the locking member 5 is greater than the distance from the end of the locking groove 52 away from the connection point to the top of the locking member 5. This causes the insertion section 42 to be further inserted into the locking member 5 as the limiting post 44 moves from the opening groove 51 to the locking groove 52, thereby further increasing the firmness after locking.

[0055] When the multi-stage sleeve 1 is unlocked, the limiting post 44 moves from the locking groove 52 to the unlocking groove 53. Because the unlocking groove 53 and the locking groove 52 are set opposite each other, when the limiting post 44 moves from the locking groove 52 to the unlocking groove 53, it will first pass through the opening groove 51 and then enter the unlocking groove 53. When the limiting post 44 enters the opening groove 51 from the locking groove 52, the insertion section 42 will be pulled out of the locking member 5 a certain distance (this distance is the distance that the insertion section 42 further inserts into the locking member 5 when locked), thereby avoiding excessive locking force, which would prevent the actively telescopic multi-stage sleeve from retracting. After that, the limiting post 44 enters the unlocking groove 53 from the opening groove 51, forming a "semi-locked" state, that is, the bottom surface of the unlocking groove 53 can support the limiting post 44, preventing the sleeve from falling directly due to its own weight.

[0056] In addition to forming a "semi-locked" state, the unlocking slot 53 is more important because after the limiting post 44 abuts against the unlocking slot 53, it will drive the upper-level sleeve to rotate, thereby moving the limiting post 44 in the upper-level sleeve from the locking slot 52 to the unlocking slot 53, thus forming the bottom sleeve 11 to rotate, which can drive the upper-level sleeve to unlock.

[0057] During unlocking, the second drive device drives the active telescopic multi-stage sleeve to retract, thereby driving the passive telescopic multi-stage sleeve to retract via the crossbar 3. In order to allow the limit post 44 to smoothly disengage from the unlocking groove 53 without activating the rotation mechanism, the bottom surface of the unlocking groove 53 is usually inclined.

[0058] Furthermore, the bottom surface of the locking member 5 has a guide surface, which is typically an inclined surface, used to guide the limiting post 44 to move into the opening slot 51. When the telescopic railing is extended, the limiting post 44 can enter the opening slot 51 through the guide surface.

[0059] Furthermore, a retaining ring 54 is provided at the end of the locking member 5 away from the rotating slot, and a limiting block 55 is provided on the outer side wall of the locking member 5. When the locking member 5 is installed, the retaining ring 54 can be engaged with the top port of the bottom sleeve 11 (or the middle sleeve 12) to prevent the locking member 5 from falling into the sleeve and being unable to be removed. The limiting block 55 allows a gap to be reserved between the outer wall of the locking member 5 and the inner wall of the sleeve, so that when the insertion section 42 opens the locking member 5, the locking member 5 has a certain deformation space.

[0060] Furthermore, the locking groove 52 extends from the opening groove 51 to the end of the locking member 5 away from the opening groove 51, forming the aforementioned "spiral groove". A crimp connector 6 is provided at the top of the bottom sleeve 11 and the top of the intermediate sleeve 12. The crimp connector 6 is used to fix the locking member 5 to the top of the bottom sleeve 11 or the top of the intermediate sleeve 12. The crimp connector 6 can prevent impurities from entering the sleeve without affecting the sleeve's expansion and contraction.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0062] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A mechanical interlocking rotation locking mechanism for a telescopic barrier, characterized in that, The utility model relates to a multi-stage sleeve drive mechanism, comprising: n multi-stage sleeves (1) arranged on a drive mechanism (2), wherein n>=1; a locking mechanism arranged on the multi-stage sleeve (1), which is used for locking or unlocking the multi-stage sleeve (1) when the multi-stage sleeve (1) is in an unfolded state; when the multi-stage sleeve (1) is in the unfolded state, the drive mechanism (2) is used for driving the multi-stage sleeve (1) to move, so that the multi-stage sleeve (1) is locked or unlocked through the locking mechanism.

2. A mechanical interlocking rotation lock mechanism for a telescoping barrier according to claim 1, wherein The drive mechanism (2) is a rotating mechanism, which is used for driving two adjacent multi-stage sleeves (1) to rotate synchronously.

3. A mechanical interlocking rotation lock mechanism for a telescoping barrier according to claim 2, wherein The rotating mechanism comprises a first driving device (21), a transmission device (22) and a linkage device (23), the multi-stage sleeve (1) is movably connected with the linkage device (23), and the linkage device (23) is connected with the first driving device (21) through the transmission device (22).

4. A mechanical interlock rotation lock mechanism for a telescoping barrier according to claim 3, wherein The rotating mechanism further comprises a housing (24), the first driving device (21), the transmission device (22) and the linkage device (23) are located in the housing (24), the multi-stage sleeve (1) penetrates through the housing (24), and the connection position of the linkage device (23) and the multi-stage sleeve (1) is located in the housing (24).

5. The mechanical interlock rotation lock mechanism for a telescoping barrier according to claim 1, wherein, The multi-stage sleeve (1) comprises a bottom sleeve (11), m intermediate sleeves (12) and a top sleeve (13), wherein m>=0; the outer wall of the bottom sleeve (11) is movably connected with the drive mechanism (2); the top sleeve (13) is connected with the bottom sleeve (11) through the intermediate sleeves (12); the locking mechanism is arranged at the top of the bottom sleeve (11), both ends of the intermediate sleeve (12) and the bottom of the top sleeve (13); when the multi-stage sleeve (1) is in the unfolded state, the top of the bottom sleeve (11) and the bottom of the intermediate sleeve (12) are locked or unlocked with each other through the locking mechanism; the top of the intermediate sleeve (12) and the bottom of the top sleeve (13) are locked or unlocked with each other through the locking mechanism.

6. A mechanical interlock rotation lock mechanism for a telescoping barrier according to claim 5, wherein The locking mechanism comprises a piston head (4) and a locking piece (5); the piston head (4) is arranged at the bottom of the intermediate sleeve (12) and / or the bottom of the top sleeve (13), and the locking piece (5) is arranged at the bottom of the top sleeve (13) and / or the top of the intermediate sleeve (12); when the multi-stage sleeve (1) is in the unfolded state, the piston head (4) abuts against the locking piece (5), and the drive mechanism (2) is used for driving the piston head (4) and the locking piece (5) to produce relative movement, so that the multi-stage sleeve (1) is locked and unlocked.

7. A mechanical interlocking rotation lock mechanism for a telescoping barrier according to claim 6, wherein The piston head (4) is a tubular structure, comprising a connecting section (41), an insertion section (42) and a piston section (43), the connecting section (41) and the piston section (43) are respectively located at both ends of the insertion section (42), the outer diameter of the end of the insertion section (42) close to the connecting section (41) is smaller than the outer diameter of the end of the insertion section (42) close to the piston section (43), the piston head (4) is connected with the bottom of the middle sleeve (12) or the bottom of the top sleeve (13) through the connecting section (41), a limiting column (44) is arranged on the insertion section (42), the limiting column (44) extends away from the insertion section (42) from the outer wall of the insertion section (42); When the multi-stage sleeve (1) is in the unfolded state, the limiting column (44) abuts against the locking piece (5).

8. A mechanical interlock rotation lock mechanism for a telescoping barrier according to claim 7, wherein The locking piece (5) is a tubular structure, arranged at the top of the bottom sleeve (11) or the top of the middle sleeve (12), a rotating clamping groove is arranged on the locking piece (5), the rotating clamping groove is arranged along the circumference of the locking piece (5), the rotating clamping groove is composed of an opening groove (51), a locking groove (52) and an unlocking groove (53), the opening of the opening groove (51) is located at the bottom of the locking piece (5), the locking groove (52) and the unlocking groove (53) are both in communication with the opening groove (51), and the locking groove (52) and the unlocking groove (53) are oppositely arranged; When the multi-stage sleeve (1) is in the unfolded state, the limiting column (44) is located in the opening groove (51); When the multi-stage sleeve (1) is locked, the limiting column (44) moves from the opening groove (51) to the locking groove (52); When the multi-stage sleeve (1) is unlocked, the limiting column (44) moves from the locking groove (52) to the unlocking groove (53).

9. A mechanical interlock rotation lock mechanism for a telescoping barrier according to claim 8, wherein, The bottom surface of the locking piece (5) has a guide surface, and the guide surface is used to guide the movement of the limiting column (44) into the opening groove (51).

10. A mechanical interlock rotation lock mechanism for a telescoping barrier according to claim 8, wherein An end of the locking piece (5) away from the rotating clamping groove is provided with a clamping ring (54), a limiting block (55) is arranged on the outer side wall of the locking piece (5), the locking groove (52) extends from the opening groove (51) to an end of the locking piece (5) away from the opening groove (51), the top of the bottom sleeve (11) and the top of the middle sleeve (12) are provided with a compression joint (6), and the compression joint (6) is used to fix the locking piece (5) on the top of the bottom sleeve (11) or the top of the middle sleeve (12).

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