Locking mechanism, lifting device and lifting system

Abstract

This invention relates to the field of climbing machinery technology, and more particularly to a locking mechanism, comprising a housing, a brake pin, and a locking shaft. The housing has a first channel and a second channel that are interconnected and at a predetermined angle. The brake pin is installed in the first channel and can move along the first channel to switch between an unlocked state (retracted relative to the housing) and a locked state (extended relative to the housing). A brake hole is provided on the outer circumferential surface of the brake pin. The locking shaft is installed in the second channel and is adapted to switch between a locked position and a clearance position along the second channel. This invention also relates to a lifting device and lifting system incorporating this locking mechanism, solving the problem of lifting equipment being unable to stop due to sudden malfunctions during lifting, especially during ascent. The locking mechanism's locking function stops the vehicle, minimizing personnel and property damage.

Description

Technical Field

[0001] This invention relates to the field of climbing machinery technology, and in particular to a locking mechanism, lifting device, and lifting system. Background Technology

[0002] With social development and progress, high-altitude operations or transportation are involved in many fields, such as towers, shafts, wind turbine towers, and construction tower cranes. Lifting devices can be widely used in these fields. Lifting devices can quickly, labor-savingly, and safely reach high positions, playing a good role in transporting manpower or materials to high-altitude operations.

[0003] Existing lifting devices come in various forms, but most rely on hydraulic or electrical systems to rapidly raise or lower the vehicle body on tracks or frames, primarily for transportation. However, during operation, unforeseen malfunctions can occur, causing the hydraulic or electrical systems to fail, preventing timely cessation of the lifting or lowering motion. Such situations can easily lead to personal injury or property damage. Because this type of malfunction is relatively rare, existing lifting devices rarely incorporate emergency locking mechanisms to handle such failures. Once a malfunction does occur, it has a high probability of causing extremely serious accidents.

[0004] Based on the defects of the aforementioned lifting devices, it is necessary to design and develop a mechanism that can promptly lock the operating status of the lifting device in the event of a sudden hydraulic or electrical system failure, thereby preventing serious accidents. Summary of the Invention

[0005] This invention provides a locking mechanism, a lifting device, and a lifting system for emergency locking and stopping of the lifting device in the event of a sudden malfunction.

[0006] This invention provides a locking mechanism, comprising:

[0007] The housing has a first channel and a second channel that are interconnected and at a predetermined angle inside the housing.

[0008] A brake pin is installed in the first channel. The brake pin can move along the first channel to switch between an unlocked state that is retracted relative to the housing and a locked state that is extended relative to the housing. A brake hole is provided on the outer peripheral surface of the brake pin.

[0009] A locking shaft is installed in the second channel, the locking shaft being adapted to switch between a locking position and a clearance position along the second channel;

[0010] In the locked position, the end of the locking shaft is inserted into the brake hole to fix the brake pin in the unlocked state; in the clearance position, the locking shaft is separated from the brake pin, and the brake pin is adapted to move along the first channel to the locked state.

[0011] The end of the second channel away from the first channel is widened to form a step within the second channel; the locking shaft is provided with a limiting platform in the circumferential direction, and the limiting platform abuts against the step;

[0012] A spring cover is installed at the port of the second channel away from the first channel. A first elastic element is circumferentially fitted on the locking shaft. The spring cover is adapted to abut the first elastic element against the limiting platform, and cause the limiting platform to abut the step.

[0013] The locking shaft is hinged to a lever at its end away from the first channel, and the middle of the lever is hinged to the housing.

[0014] A second elastic element is provided in the first channel, and a flexible rope is threaded through the first channel and connected to the brake pin. The flexible rope is adapted to pull the brake pin to the unlocked state and compress the second elastic element. The second elastic element is adapted to reset to drive the brake pin to the locked state.

[0015] The brake pin has an axial through hole inside. A second annular protrusion is provided on the inner surface of the through hole, dividing the through hole into a first through hole and a second through hole that are interconnected. The second elastic element is installed in the first through hole.

[0016] In the unlocked state, the second elastic element is compressed, and both ends of the second elastic element abut against the second annular protrusion and a fixed point in the first channel, respectively.

[0017] The second through hole contains a first flexible cable sleeve, which is fixed to the flexible cable. The flexible cable passes through the through hole and the first channel in sequence and extends out of the first channel.

[0018] The housing is provided with a handle fixing seat, which is fixed to the end of the first channel opposite to the direction of the brake pin extension. A rotating handle is hinged to the side of the handle fixing seat opposite to the first channel via a hinge seat. The flexible cable extends out of the first channel and is fixedly connected to the hinge seat. The rotating handle, together with the hinge seat, can move away from the handle fixing seat to drive the brake pin to switch to the unlocked state and compress the second elastic element.

[0019] The inner surface of the first channel is provided with a first annular protrusion to divide the first channel into a first mounting section away from the second channel and a second mounting section close to the second channel, and the brake pin is mounted on the second mounting section; in the unlocked state, the two ends of the second elastic element abut against the second annular protrusion and the first annular protrusion, respectively;

[0020] The handle fixing seat is fixed to the end of the first mounting section facing away from the second mounting section. A third elastic element is provided in the first mounting section. The part of the flexible cable passing through the first mounting section is fixed with a second flexible cable pressure sleeve. In the unlocked state, the rotating handle applies force to retract the third elastic element between the end face of the handle fixing seat and the second flexible cable pressure sleeve. The third elastic element resets to retract the flexible cable into the first channel, and the flexible cable located on the side of the second flexible cable pressure sleeve away from the handle fixing seat is in a natural, unforced state.

[0021] An anti-rotation limiting block is fixed on the housing at a position outside the first channel. The anti-rotation limiting block is fixed to a fixing block of the housing and a pin that passes through the housing. A guide groove is provided on the outer circumferential surface of the brake pin along the axial direction of the brake pin. One end of the pin is located in the guide groove, and the other end passes through the housing and connects to the fixing block.

[0022] The present invention also provides a lifting device, including the above-mentioned locking mechanism, wherein the locking mechanism is fixed to the vehicle body, and a brake button is provided on the vehicle body, and the brake button controls the locking shaft of the locking mechanism in a linkage manner.

[0023] The present invention also provides a lifting system, including the above-mentioned lifting device, wherein the vehicle body is mounted on a guide rail, and a plurality of fixed locking stops are arranged on the guide rail along the guide rail direction, the vehicle body is powered by a drive motor, and the drive motor is connected to an electrical control box.

[0024] The locking mechanism provided by this invention solves the problem of the lifting device and lifting system failing to stop during the lifting process due to sudden malfunction (especially the inability to stop during the upward process). By using the locking function of the locking mechanism to stop the vehicle body, the loss of personnel and property can be minimized. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is an isometric view of the locking mechanism provided by the present invention;

[0027] Figure 2 This is a front view of the locking mechanism provided by the present invention;

[0028] Figure 3 This is a cross-sectional view of the locking mechanism provided by the present invention;

[0029] Figure 4 This is a schematic diagram of the vehicle body structure of the lifting device provided by the present invention;

[0030] Figure 5 This is a schematic diagram of the internal structure of the lifting device provided by the present invention;

[0031] Figure 6 This is a structural schematic diagram of the lifting system provided by the present invention.

[0032] Figure label:

[0033] 1. Housing; 2. Brake pin; 3. Locking shaft; 4. Lever; 5. Rotating handle; 6. Hinge seat; 7. Handle fixing seat; 8. Third elastic element; 9. Second flexible cable sleeve; 10. Anti-rotation limit block; 11. Car body; 12. Guide rail; 13. Brake button; 14. Tensioning device; 15. Ladder; 16. Drive motor; 17. Electrical control box;

[0034] 1-1, First channel; 1-2, Second channel; 1-3, Step; 1-4, First installation section; 1-5, Second installation section;

[0035] 2-1 Brake hole; 2-2 First flexible cable sleeve; 2-3 Flexible cable; 2-4 Second elastic element; 2-5 First annular protrusion; 2-6 Second annular protrusion; 2-7 First through hole; 2-8 Second through hole;

[0036] 3-1. Spring-loaded cap; 3-2. First elastic element; 3-3. Limiting platform;

[0037] 10-1, Fixing block; 10-2, Pin. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0039] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not 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 the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0041] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] Embodiments of the present invention provide a locking mechanism, combined with Figure 2 and Figure 3As shown, the device includes a housing 1, a brake pin 2, and a locking shaft 3. The housing 1 has a first channel 1-1 and a second channel 1-2 that are interconnected and at a predetermined angle. A 90-degree angle is optimal, but other angles are also acceptable, as long as the two channels are not parallel. The brake pin 2 is mounted on the first channel 1-1 and can move along it to switch between an unlocked state (retracted relative to the housing 1) and a locked state (extended relative to the housing 1). This retraction and extension are relative; that is, in the locked state, the brake pin 2 extends outwards from the housing 1 relative to the unlocked state, and in the unlocked state, it retracts inwards from the housing 1 relative to the locked state.

[0044] The outer circumferential surface of the brake pin 2 is provided with a brake hole 2-1; the locking shaft 3 is installed in the second channel 1-2, and the locking shaft 3 is adapted to switch between a locked position and a clearance position along the second channel 1-2. In the locked position, the end of the locking shaft 3 is inserted into the brake hole 2-1 to fix the brake pin 2 in the unlocked state; in the clearance position, the locking shaft 3 is separated from the brake pin 2, and the brake pin 2 is adapted to move along the first channel 1-1 to the locked state.

[0045] Specifically, in one embodiment of the present invention, combined with Figure 2 and Figure 3 As shown, the housing 1 has a first channel 1-1 and a second channel 1-2 that are perpendicular to each other and connected. The brake pin 2 is located in the first channel 1-1, and the locking shaft 3 is located in the second channel 1-2. The outer circumferential surface of the brake pin 2 is provided with a brake hole 2-1. One end of the locking shaft 3 passes through the connection between the first channel 1-1 and the second channel 1-2 and enters the brake hole 2-1. At this time, the brake pin 2 is in the unlocked state. When locking is required, the principle is the same as that of a door lock. In combination with the specific structure of this embodiment, locking is mainly achieved by the brake pin 2. By inserting the brake pin 2 into the fixed structure of the external environment, the entire locking mechanism can be fixed to the external environment structure to achieve locking. In this embodiment, the first channel 1-1 and the second channel 1-2 are perpendicular to each other. The locking shaft 3 located inside the second channel 1-2 moves within the second channel 1-2. The end of the locking shaft 3 passes through the brake hole 2-1 of the brake pin 2, and the locking shaft 3 fixes the brake pin 2. When locking is required, the locking shaft 3 moves away from the brake hole 2-1, and the end of the locking shaft 3 leaves the brake hole 2-1. At this time, the locking shaft 3 and the brake pin 2 are disengaged. Applying a pushing force to the brake pin 2 will cause the brake pin 2 to move along the first channel 1-1 until its end extends out of the first channel 1-1. After the end of the brake pin 2 extends out of the first channel 1-1, it is locked in the fixed structure in the external environment, thus fixing the entire mechanism to the external environment structure.

[0046] This embodiment further improves the movement method and structure of the locking shaft 3 in the locking mechanism of the above embodiment. This embodiment mainly provides a spring-loaded structure for the locking shaft 3, so that after the locking mechanism completes its locking function and returns to its original position, the locking shaft 3 can automatically fix the brake pin 2. To achieve this function, in this embodiment, the end of the second channel 1-2 away from the first channel 1-1 is widened to form a step 1-3 within the second channel 1-2; a limiting platform 3-3 is provided around the locking shaft 3, and the limiting platform 3-3 abuts against the step 1-3; a spring cap 3-1 is installed at the port of the second channel 1-2 away from the first channel 1-1, and a first elastic element 3-2 is circumferentially fitted onto the locking shaft 3. The spring cap 3-1 is adapted to abut the first elastic element 3-2 against the limiting platform 3-3, and the limiting platform 3-3 abuts against the step 1-3. The first elastic element 3-2 can be a spring structure or other elastic functional element with elastic properties to achieve the corresponding function.

[0047] When the locking shaft 3 and the brake pin 2 are fixed relative to each other (the end of the locking shaft 3 passes through the brake hole 2-1 of the brake pin 2), the first elastic element 3-2 is in a relaxed state. When the brake pin 2 needs to perform a locking action, refer to... Figure 3 As shown, pulling the locking shaft 3 upwards causes its end to disengage from the brake pin 2, releasing the fixation between them and applying force to the brake pin 2 to lock it in place. When the locking shaft 3 is pulled upwards, the limiting platform 3-3 of the locking shaft 3 also moves upwards. The first elastic element 3-2 is compressed towards the spring cover 3-1 by the limiting platform 3-3, and the brake pin 2 switches to the locked state. When the brake pin 2 is released and returns to its original position, the limiting platform 3-3 of the locking shaft 3 is pushed by the first elastic element 3-2, causing the locking shaft 3 to move towards the brake hole 2-1 of the brake pin 2 until the limiting platform 3-3 abuts against the step 1-3, and the end of the locking shaft 3 inserts into the brake hole 2-1. At this point, the compressed state of the first elastic element 3-2 is released, becoming relaxed. This process achieves automatic fixation of the brake pin 2 and the locking shaft 3 after the lock is released.

[0048] To facilitate the application of action to the locking shaft 3, in this embodiment, the end of the locking shaft 3 furthest from the first channel 1-1 is hinged to a lever 4, and the middle of the lever 4 is hinged to the housing 1. Figure 3As shown, when the left end of lever 4 is pressed down, the right end of lever 4 will move the locking shaft 3 upward under the action of the lever principle, causing the locking shaft 3 and the brake pin 2 to disengage. Similarly, when the left end of lever 4 is no longer subjected to downward pressure, the locking shaft 3 will tend to move downward under the action of the first elastic element 3-2. If there is room for movement at the end of the locking shaft 3, that is, the brake hole 2-1 of the brake pin 2 returns to the initial position, the locking shaft 3 will move downward until the limiting platform 3-3 abuts against the step 1-3, so that the end of the locking shaft 3 is inserted into the brake hole 2-1 of the brake pin 2, thereby restricting the brake pin 2 within the first channel 1-1.

[0049] In the above embodiments, to achieve locking, an outward thrust needs to be applied to the brake pin 2. This can be done manually or with a more convenient structure. This embodiment provides an automatic structure to achieve this function, combined with... Figure 3 and Figure 5 As shown, a second elastic element 2-4 is disposed within the first channel 1-1, and a flexible rope 2-3 is threaded through the first channel 1-1, connected to the brake pin 2. The flexible rope 2-3 is adapted to pull the brake pin 2 to the unlocked state and compress the second elastic element 2-4, while the second elastic element 2-4 is adapted to reset to drive the brake pin 2 to the locked state. The threading of the flexible rope 2-3 does not mean that both ends of the flexible rope 2-3 must protrude from the first channel 1-1; for example, in the structure of this invention, only one end protrudes from the first channel 1-1. The second elastic element 2-4 can be a spring structure or other elastic functional element with elastic properties to achieve the corresponding function.

[0050] To achieve the functions of the second elastic element 2-4 and the flexible cable 2-3, specifically in terms of structure, the brake pin 2 has an axial through hole, and a second annular protrusion 2-6 (or other limiting structure, used to fix and limit one end of the spring) is provided on the inner surface of the through hole, dividing the through hole into a first through hole 2-7 and a second through hole 2-8 that are interconnected. The second elastic element 2-4 is installed in the first through hole 2-7.

[0051] In the unlocked state, the second elastic element 2-4 is compressed, and the two ends of the second elastic element 2-4 abut against the second annular protrusion 2-6 and a fixing point in the first channel 1-1, respectively. This fixing point can be a point on the inner surface of the first channel 1-1 or a fixing device provided on the inner surface. The second through hole 2-8 is equipped with the first flexible cable sleeve 2-2, which is fixed on the flexible cable 2-3. The flexible cable 2-3 passes through the second through hole 2-8, the first through hole 2-7 and the first channel 1-1 in sequence and extends out of the first channel 1-1.

[0052] When the brake pin 2 and the locking pin 3 are fixed together, such as Figure 3As shown, the second elastic element 2-4 is in a compressed state at this time, possessing the pre-force for extension. However, it cannot extend while the brake pin 2 and locking shaft 3 are fixed together. When the locking shaft 3 disengages from the brake pin 2, the second elastic element 2-4 wants to extend, but its left end is restricted by a fixed point within the first channel 1-1. Therefore, the second elastic element 2-4 can only extend to the right, pushing the brake pin 2 to the right. The brake pin 2 extends to the right out of the first channel 1-1, locking the fixed structure in the external environment of the first channel 1-1, thus achieving the locking function. The locking mechanism ultimately achieves the desired effect. Figure 5 As shown in the diagram; when it is necessary to release the lock, pull the flexible cable 2-3 to the left. Since the first flexible cable pressure sleeve 2-2 is fixed on the flexible cable 2-3, the first flexible cable pressure sleeve 2-2 will abut against the second annular protrusion 2-6, thereby pulling the brake pin 2 to the left. The brake pin 2 will disengage from the fixed structure in the external environment, releasing the lock. During the movement of the brake pin 2 to the left, when the brake hole 2-1 of the brake pin 2 is directly below the locking shaft 3, the end of the locking shaft 3 will automatically move downward, allowing the end of the locking shaft 3 to enter the brake hole 2-1, thereby fixing the brake pin 2 and the locking shaft 3. At this time, the tension on the flexible cable 2-3 can be removed, and the entire structure reaches a stable state.

[0053] For the sake of aesthetics and convenience of the structure, such as Figure 1 As shown, the housing 1 is provided with a handle fixing seat 7, which is fixed to the end of the first channel 1-1 facing away from the extension direction of the brake pin 2. The side of the handle fixing seat 7 facing away from the first channel 1-1 is hinged to a rotating handle 5 via a hinge seat 6. A groove can be provided in the handle fixing seat 7 to install the hinge seat 6 and the handle 5. The flexible cable 2-3 extends out of the first channel 1-1 and is fixedly connected to the hinge seat 6. The rotating handle 5, together with the hinge seat 6, can move away from the handle fixing seat 7 to pull the flexible cable 2-3 and thus drive the brake pin 2 to retract into the first channel 1-1, thereby switching the brake pin 2 to the unlocked state and compressing the second elastic element 2-4.

[0054] In the above embodiment, during the locking and unlocking process, the flexible cable 2-3 moves with the brake pin 2. Especially when unlocking, it needs to be pulled by rotating the handle 5. Since the brake pin 2 is in two positions during locking and unlocking, the rotating handle 5, which is dynamically connected to the brake pin 2 via the flexible cable 2-3, also needs to be in two positions during locking and unlocking. When locking, under the pull of the flexible cable 2-3, the rotating handle 5 can be positioned exactly in the groove of the handle fixing seat 7 with the hinge seat 6. When unlocking, the flexible cable 2-3 needs to be pulled by rotating the handle 5. In the final state, the rotating handle 5 and part of the flexible cable 2-3 will be in the handle. The fixed seat 7 is external and dangles outward due to the characteristics of the flexible cable. This state is not aesthetically pleasing and is prone to accidents. This embodiment designs a structure to solve this problem. In this embodiment, the inner surface of the first channel 1-1 is provided with a first annular protrusion 2-5 (or other limiting structure, used to fix and limit one end of the spring) to divide the first channel 1-1 into a first mounting section 1-4 away from the second channel 1-2 and a second mounting section 1-5 close to the second channel 1-2. The brake pin 2 is installed in the second mounting section 1-5. In the unlocked state, the two ends of the second elastic element 2-4 abut against the second annular protrusion 2-6 and the first annular protrusion 2-5, respectively.

[0055] The handle fixing seat 7 is fixed to the end of the first mounting section 1-4 facing away from the second mounting section 1-5. A third elastic element 8 is provided inside the first mounting section 1-4. The portion of the flexible cable 2-3 passing through the first mounting section 1-4 is fixed with a second flexible cable compression sleeve 9. In the unlocked state, rotating the handle 5 applies force to compress the third elastic element 8 between the end face of the handle fixing seat 7 and the second flexible cable compression sleeve 9. A large washer is fixed on the second flexible cable compression sleeve 9, and the flexible cable 2-3 is connected to the second flexible cable compression sleeve 9 by connecting the large washer. The third elastic element 8 resets to retract the flexible cable 2-3 into the first channel 1-1, and the flexible cable 2-3 located on the side of the second flexible cable compression sleeve 9 away from the handle fixing seat 7 is in a naturally unforced state. The third elastic element 8 can be a spring structure or other elastic functional element with elastic properties to achieve the corresponding function.

[0056] When the locking mechanism is in the locked state, the third elastic element 8 is in the relaxed state. At this time, the rotating handle 5 is located in the groove of the handle fixing seat 7. When the locking state is released, as... Figure 5As shown, turning handle 5 pulls the flexible cable 2-3 to the left. One end of the third elastic element 8 abuts against the surface of the handle fixing seat 7 facing the flexible cable 2-3. As the flexible cable 2-3 moves to the left, the large washer on the second flexible cable pressure sleeve 9 will compress the third elastic element 8, causing it to become compressed. When the brake pin 2 reaches its original position, the locking shaft 3 moves downward to fix the brake pin 2. At this time, it is no longer necessary to apply force by turning handle 5. After releasing handle 5, the brake pin 2 will not move. In this state, turning handle 5... A portion of the flexible cord 2-3 is located outside the handle fixing seat 7, but the third elastic element 8 is in a compressed and ready-to-extend state. One end of the third elastic element 8 abuts against the handle fixing seat 7, and the other end pushes the large washer on the second flexible cord pressure sleeve 9 to the right, thereby moving the flexible cord 2-3 to the right, so that the rotating handle 5 is housed in the groove of the handle fixing seat 7. At this time, the drooping flexible cord is the part of the internal large washer facing away from the third elastic element 8. Since it is inside the structure, it does not affect the appearance, ensuring that the rotating handle 5 will not droop outside the handle fixing seat 7.

[0057] During operation, the downward insertion of the locking shaft 3 into the brake hole 2-1 of the brake pin 2 is a crucial structural element of the locking mechanism. Because the brake pin 2 is a cylindrical structure, it is prone to rotation within the first channel 1-1, causing the locking shaft 3 to misalign with the brake hole 2-1. To address this issue, the brake pin 2 and the first channel 1-1 can be made into non-cylindrical structures, such as rectangular cross-sections or other structures that do not allow relative rotation. When the brake pin 2 and the first channel 1-1 are cylindrical (i.e., with a circular cross-section), an anti-rotation limiting block 10 is required to prevent the brake pin 2 from rotating within the first channel 1-1.

[0058] In one embodiment, refer to Figure 1 As shown, an anti-rotation limiting block 10 is fixed on the housing 1 at a position outside the first channel 1-1. The anti-rotation limiting block 10 consists of a fixing block 10-1 fixed to the housing 1 and a pin 10-2 passing through the housing 1. A guide groove is provided on the outer circumferential surface of the brake pin 2 along the axial direction of the brake pin 2. One end of the pin 10-2 is located in the guide groove, and the other end passes through the housing 1 and connects to the fixing block 10-1. The pin 10-2 and the guide groove of the brake pin 2 cooperate, so that the brake pin 2 can only move along the direction of the guide groove of the brake pin 2 (i.e., the axial direction of the brake pin 2), and will not rotate circumferentially, ensuring that the brake hole 2-1 will be accurately located in the axial direction of the locking shaft 3.

[0059] Besides the above embodiments, other structures can also be used to prevent the brake pin 2 from rotating circumferentially. For example, an anti-rotation limiting block 10 is provided on the inner wall of the first channel 1-1 along the channel direction of the first channel 1-1, and a guide groove is provided on the outer surface of the brake pin 2 along the axial direction of the brake pin 2. The anti-rotation limiting block 10 is located in the guide groove. Alternatively, a guide groove is provided on the inner wall of the first channel 1-1 along the channel direction of the first channel 1-1, and an anti-rotation limiting block 10 is provided on the outer surface of the brake pin 2 along the axial direction of the brake pin 2. The anti-rotation limiting block 10 and the guide groove on the inner wall of the first channel 1-1 cooperate for guidance. The principle of this embodiment is the same as that of the previous embodiment. In this embodiment, the anti-rotation limiting block 10 is made into a shape that cooperates with the guide groove in the axial direction of the brake pin 2, ensuring that the anti-rotation limiting block 10 and the guide groove fit perfectly. Under the action of both, the brake pin 2 can only move axially and will not rotate circumferentially.

[0060] The present invention also provides a lifting device, including the aforementioned locking mechanism, which is fixed to the vehicle body 11. A brake button 13 is provided on the vehicle body 11, and the brake button 13 controls the locking shaft 3 of the locking mechanism in conjunction with the vehicle body 11. See also Figure 4 As shown, the locking mechanism is fixed inside the vehicle body 11, and the vehicle body 11 is mounted as shown in the figure. Figure 6 On the guide rail 12, multiple fixed locking stops are provided along the guide rail direction, combined with Figure 4 and Figure 5 As shown, the lower end of the brake button 13 abuts against the lever 4 of the locking mechanism, and the brake pin 2 has a fixed locking stop on the guide rail 12 along its axial direction. When the operator sits on the vehicle body 11 and performs lifting operations along the guide rail 12, and when locking is required, the operator presses the brake button 13. The lower end of the brake button 13 presses down on one end of the lever 4, while the other end of the lever 4 lifts the locking shaft 3 upwards. The locking shaft 3 disengages from the brake hole 2-1 of the brake pin 2. Under the action of the second elastic element 2-4, the brake pin 2 moves to the right, extending out of the first channel 1-1. Finally, the end of the brake pin 2 will be engaged with the upper or lower edge of the fixed locking stop on the guide rail 12, thus locking the vehicle body 11. The vehicle body 11 moves and stops at a certain position on the guide rail 12. After the fault is cleared, the rotating handle 5 on the vehicle body 11 is pulled. The rotating handle 5 drives the brake pin 2 to move to the left. The end of the brake pin 2 leaves the fixed locking stop of the guide rail 12, releasing the lock. The brake pin 2 returns to the initial position and is fixed by inserting the locking shaft 3 into the brake hole 2-1 of the brake pin 2. At this time, the rotating handle 5 is released. Under the action of the third elastic element 8, the rotating handle 5 sits on the handle fixing seat 7. At this time, the vehicle body 11 can continue to perform lifting and lowering operations on the guide rail 12.

[0061] The present invention also provides a lifting system, including the above-mentioned lifting device. The vehicle body 11 is mounted on a guide rail 12, and multiple fixing locking stops are arranged on the guide rail 12 along the guide rail direction. The vehicle body 11 is powered by a drive motor 16, which is connected to an electrical control box 17. See also... Figure 6 As shown, the vehicle body 11 is mounted on the guide rail 12 via a tensioning device 14. The guide rail 12 is mounted on the ladder 15. The tensioning device 14 consists of a tensioning rope laid along the guide rail 12 and a winch that controls the movement of the tensioning rope. The vehicle body 11 moves on the guide rail 12 along with the tensioning rope. The winch is connected to a drive motor 16, which is connected to an electrical control box 17. The electrical control box 17 controls the drive motor 16 to achieve forward and reverse operation. The drive motor 16 drives the tensioning device 14 to raise or lower the vehicle body 11 on the guide rail 12. In case of emergency, the vehicle body 11 is locked by a locking mechanism. Workers can leave the vehicle body 11 via the ladder 15 and return to the vehicle body 11 to continue work after the fault is cleared.

[0062] In summary, the locking mechanism, lifting device, and lifting system provided by this invention solve the problem of sudden malfunctions in the lifting device and lifting system during the lifting process, which prevents the lifting equipment from stopping (especially during the upward process). By using the locking function of the locking mechanism to stop the vehicle body, the loss of personnel and property can be minimized.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lock mechanism characterized by: The utility model relates to a kind of locking device, including: Shell (1), the first channel (1-1) and the second channel (1-2) being provided with inside the shell (1) are communicated with each other and are set angle; Brake pin shaft (2), installation is in the first channel (1-1), the brake pin shaft (2) can be moved along the first channel (1-1), to switch between the unlocking state of contraction relative to the shell (1) and the locking state of extension relative to the shell (1), the outer circumferential surface of the brake pin shaft (2) is provided with brake hole (2-1); Locking shaft (3), installation is in the second channel (1-2), the locking shaft (3) is suitable for switching along the second channel (1-2) in locking position and avoiding position; In the locking position, the end of the locking shaft (3) is inserted in the brake hole (2-1), to fix the brake pin shaft (2) in the unlocking state; In the avoiding position, the locking shaft (3) is separated from the brake pin shaft (2), and the brake pin shaft (2) is suitable for moving along the first channel (1-1) to the locking state; The inner surface of the first channel (1-1) is provided with first annular protrusion (2-5), to divide the first channel (1-1) into the first installation section (1-4) away from the second channel (1-2) and the second installation section (1-5) close to the second channel (1-2), and the brake pin shaft (2) is installed in the second installation section (1-5); The first channel (1-1) is provided with flexible cable (2-3) inside, and the flexible cable (2-3) is connected with the brake pin shaft (2);The shell (1) is provided with handle fixing seat (7), and the handle fixing seat (7) is fixed to the end of the first installation section (1-4) away from the second installation section (1-5), the third elastic element (8) is arranged in the first installation section (1-4), and the side of the handle fixing seat (7) away from the first channel (1-1) is hinged with rotating handle (5) through hinged seat (6), and the outer end of the flexible cable (2-3) fixedly connected with the hinged seat (6) is extended out of the first channel (1-1).

2. The lockup mechanism according to claim 1, characterized by: The end of the second channel (1-2) away from the first channel (1-1) is expanded in diameter to form a step (1-3) in the second channel (1-2);The locking shaft (3) is circumferentially provided with a circle of limiting platform (3-3), and the limiting platform (3-3) is abutted to the step (1-3); The end of the second channel (1-2) away from the first channel (1-1) is provided with spring gland (3-1), and the locking shaft (3) is circumferentially provided with first elastic element (3-2), and the spring gland (3-1) is suitable for abutting the first elastic element (3-2) to the limiting platform (3-3), and the limiting platform (3-3) is abutted to the step (1-3).

3. The lockup mechanism according to claim 2, characterized by: The end of the locking shaft (3) away from the first channel (1-1) is hinged with lever (4), and the middle part of the lever (4) is hinged to the shell (1).

4. The locking mechanism according to claim 1 or 2 or 3, characterized in that: The second elastic element (2-4) is arranged in the first channel (1-1), and the flexible cable (2-3) is adapted to pull the brake pin shaft (2) to the unlocking state and compress the second elastic element (2-4), and the second elastic element (2-4) is adapted to reset to drive the brake pin shaft (2) to the locking state.

5. The lockup mechanism according to claim 4, characterized by: The through hole is formed in the brake pin shaft (2) along the axial direction, and the inner surface of the through hole is provided with a second annular protrusion (2-6), so as to divide the through hole into a first through hole (2-7) and a second through hole (2-8) which are in communication with each other, and the second elastic element (2-4) is arranged in the first through hole (2-7); In the unlocking state, the second elastic element (2-4) is compressed, and the two ends of the second elastic element (2-4) abut against the second annular protrusion (2-6) and a fixed point in the first channel (1-1) respectively; The first flexible cable pressing sleeve (2-2) is arranged in the second through hole (2-8), the first flexible cable pressing sleeve (2-2) is fixed on the flexible cable (2-3), and the flexible cable (2-3) passes through the through hole and the first channel (1-1) in sequence and extends out of the first channel (1-1).

6. The locking mechanism of claim 5, wherein: The rotating handle (5) and the hinge seat (6) can move away from the handle fixing seat (7) to drive the brake pin shaft (2) to switch to the unlocking state and compress the second elastic element (2-4).

7. The locking mechanism of claim 6, wherein: In the unlocking state, the two ends of the second elastic element (2-4) abut against the second annular protrusion (2-6) and the first annular protrusion (2-5) respectively; The part of the flexible cable (2-3) passing through the first mounting section (1-4) is fixed with the second flexible cable pressing sleeve (9), in the unlocking state, the rotating handle (5) is forced to compress the third elastic element (8) between the end surface of the handle fixing seat (7) and the second flexible cable pressing sleeve (9), the third elastic element (8) resets to recover the flexible cable (2-3) into the first channel (1-1), and the flexible cable (2-3) located on the side of the second flexible cable pressing sleeve (9) away from the handle fixing seat (7) is in a natural state without force.

8. The locking mechanism of claim 7, wherein: The anti-rotation limiting block (10) is fixed on the shell (1) at a position outside the first channel (1-1), the anti-rotation limiting block (10) is composed of a fixed block (10-1) fixed on the shell (1) and a pin shaft (10-2) passing through the shell (1), a guide groove is arranged on the outer circumferential surface of the brake pin shaft (2) along the axial direction of the brake pin shaft (2), one end of the pin shaft (10-2) is located in the guide groove, and the other end of the pin shaft (10-2) passes through the shell (1) and is connected with the fixed block (10-1).

9. A lifting device, characterized by: The locking mechanism comprises the locking mechanism according to any one of claims 1-8, and the locking mechanism is fixed on a vehicle body (11), a brake button (13) is arranged on the vehicle body (11), and the brake button (13) is connected with the locking shaft (3) of the locking mechanism.

10. An elevator system characterized by The lifting device of claim 9 is installed on a guide rail (12) provided with a plurality of fixed locking stops in the guide rail direction, and the car body (11) is powered by a drive motor (16) connected to an electric control box (17).

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