Emergency brake transmission linkage for an elevator and control method

Abstract

The application discloses an emergency brake transmission linkage device of a lifting device and a control method, relates to the technical field of transformers, and comprises a support frame, one side of the top of the support frame is provided with a driving assembly, the other side of the driving assembly is provided with a first brake assembly, the front middle part of the support frame is provided with a second brake assembly, the driving assembly comprises a mounting seat and a driving motor, the output end of the driving motor is provided with a driving column, the first brake assembly comprises a first sleeve, a vertical rod, a rectangular frame, a striking block and a first compression spring which are sleeved at the end of the driving column, the driving column is further fixedly sleeved with a second sleeve provided with a first limiting block, the bottom of the second sleeve is provided with a first supporting plate, the first brake assembly on the driving side is linked and matched with the second brake assembly on the lifting platform side, one-stage brake cut-off power source and two-stage brake blockage of the lifting assembly falling are realized, and the problems of easy failure of the existing single locking structure, no linkage protection and easy falling accidents are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of pressure technology, specifically to an emergency braking transmission linkage device and control method for lifting equipment. Background Technology

[0002] As a commonly used lifting operation equipment, lifting platforms are widely used in various fields such as industrial production, construction, logistics handling, and high-altitude maintenance. Their core function is to achieve stable lifting and precise positioning of loads, providing safe and convenient working heights for personnel or materials. With the improvement of industrial automation and the continuous improvement of operational safety standards, the operational stability and safety of lifting platforms have become core indicators for measuring equipment performance. Among these, the locking device, as a key component ensuring that the lifting platform will not fall or shift during operation, is directly related to the safety of personnel and equipment. Its design rationality and reliability are crucial. Currently, most lifting platforms on the market use a single locking structure, either with locking components only at the drive unit or only on the lifting platform itself. Once the locking component malfunctions, it can easily lead to safety accidents such as platform falls, failing to meet the requirements of high-safety-level operations.

[0003] In existing technologies, the limitations of single locking structures are becoming increasingly apparent. On the one hand, locking components that are only installed on the drive unit are greatly affected by the operating wear of the drive mechanism. When the drive unit experiences power interruption or wear of transmission components, the locking effect of the locking components will decrease significantly or even lose its locking function. On the other hand, locking components that are only installed on the lifting platform lack linkage and coordination with the drive unit, and cannot respond to the operating status of the drive unit in real time. It is difficult to achieve synchronous locking and protection during the platform lifting process. Moreover, the force concentration at a single locking point is prone to fatigue damage of the locking components after long-term use, shortening the service life of the equipment. Therefore, developing a lifting platform locking solution that can achieve linkage and coordination of multiple components and improve locking reliability has become a technical problem that urgently needs to be solved by those skilled in the art.

[0004] Therefore, it is necessary to invent an emergency braking transmission linkage device and control method for lifting equipment to solve the above problems. Summary of the Invention

[0005] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an emergency braking transmission linkage device and control method for lifting equipment, solving the problem that existing emergency braking devices for lifting equipment mostly adopt a single locking structure and lack linkage protection.

[0006] Technical solution To achieve the above objectives, the present invention is implemented through the following technical solution: an emergency braking transmission linkage device and control method for lifting equipment, including a support frame, a driving component is provided on one side of the top of the support frame, a first braking component is provided on the other side of the driving component, and a second braking component is provided in the center of the front of the support frame. The drive assembly includes a mounting base disposed on one side of the top of the support frame, a drive motor disposed on one side of the mounting base, and a drive column disposed at the output end of the drive motor; The first braking assembly includes a first sleeve fitted to the end of the drive column. A vertical rod is provided on the outer surface of the first sleeve. A rectangular frame is movably passed through the vertical rod. An impact block is provided at the bottom end of the rectangular frame. A first compression spring is fitted on the outer peripheral surface of the vertical rod. The two ends of the first compression spring abut against the top of the rectangular frame and the bottom end of the vertical rod, respectively. The drive column is fixedly sleeved with a second sleeve, and a first limiting block is provided on the outer peripheral surface of the second sleeve; The bottom of the second sleeve is provided with a first support plate, and the top end of the first support plate is symmetrically hinged with a first support arm. The top ends of the two first support arms abut against a top plate, and a brake block is provided in the middle of the bottom of the top plate.

[0007] Furthermore, the first support arm is inclined, and a limiting groove that abuts against the top of the first support arm is opened at one bottom end of the top plate. Second limiting blocks are symmetrically and movably inserted through both sides of the top plate, and the bottom ends of the two second limiting blocks are fixedly connected to the top of the drive assembly.

[0008] Furthermore, a base plate is provided at the bottom of the first support plate, and the bottom of the base plate is fixedly connected to one side of the top of the support frame. Side plates are symmetrically provided on both sides of the base plate. A limit rod is movably passed through the middle of each of the side plates. A rotating block is fixedly connected to one end of each of the limit rods. The bottom end of each of the rotating blocks is rotatably connected to the side plate. A second compression spring is sleeved on the outer peripheral surface of each of the second sleeves. One end of the second compression spring abuts against one side plate, and the other end of the second compression spring abuts against one side of the rotating block. A support block is fixedly connected to the middle of one side of each of the rotating blocks. One side of the support block is semi-circular. A first vertical plate is fixedly connected to the middle of one end of the first support plate. A connecting plate is fixedly connected to the bottom of the first vertical plate. An insert block is fixedly connected to one end of the connecting plate. The bottom of the insert block is conical.

[0009] Furthermore, the second braking assembly includes a second support plate disposed in the middle of one side of the support frame. The second support plate has a rectangular hole inside, and a vertical plate is symmetrically and movably inserted through the rectangular hole. A plurality of protrusions are fixedly disposed at equal intervals on one side of the vertical plate.

[0010] Furthermore, the second support plate has multiple holes symmetrically opened on both sides to fit the protrusions. A crossbar is movably passed through the bottom end of the two vertical plates. Both ends of the crossbar are fixedly connected to right-angle plates. One end of the two right-angle plates is fixedly connected to both sides of the second support plate. The outer circumferential surface of the crossbar is provided with third compression springs on both sides of the two second vertical plates. One end of each of the two third compression springs abuts against one side of the second vertical plate, and the other end of each of the two third compression springs abuts against one side of the right-angle plate.

[0011] Furthermore, each of the two second vertical plates is provided with a pressing block at its top, and each of the two pressing blocks has an inclined surface on its inner side at its top. Both pressing blocks are inserted into the insert block, and one side of the second support plate is provided with mounting blocks that are fixedly connected to the support frame at equal intervals.

[0012] Furthermore, the drive column movably passes through the support roller and the support seat. The support seat is located at both ends of the support roller and its bottom is fixedly connected to the top of the support frame. The support seats are symmetrically arranged on the outer peripheral surface of the support roller. A counterweight body is slidably arranged on one side of the support frame. The top middle of the counterweight body is fixedly connected to the end of the suspension rope.

[0013] Furthermore, a lifting assembly is provided on one side of the support frame. The lifting assembly includes a bracket disposed in the middle of one side of the support frame. Limiting pulleys that are slidably connected to the support frame are symmetrically arranged on both sides of the top of the bracket. A boom is symmetrically arranged in the middle of the top of the bracket. The two booms are fixedly connected to the other end of the lifting rope. A second support arm is symmetrically arranged below one side of the bracket.

[0014] Furthermore, mounting plates are symmetrically arranged above and below the center of the other side of the bracket, and sliders are fixedly connected to the outer surfaces of the mounting plates. One end of the sliders is slidably connected to the side of the second support plate.

[0015] A method for emergency braking of lifting equipment: S: First, when the drive motor malfunctions and the support roller goes out of control, the speed of the drive column will increase rapidly, which will cause the centrifugal force to increase rapidly. This will increase the rotation radius of the impact block installed on the surface of the drive column and squeeze the first compression spring. At this time, when the impact block hits the first support plate during rotation, the first support plate will squeeze the support block. Since one side of the support block is semi-circular, the squeezed support block will move to one side after being squeezed, which will drive the rotating block and the limiting rod to rotate, thereby causing the support block to separate from the first support plate. When the first support plate moves downward, the top of the support arm hinged at both ends of the top of the first support plate will separate from the top plate, causing the top plate to fall automatically under the action of gravity, thereby causing the brake block to engage with the limiting block on the surface of the second sleeve, thus stopping the drive column. S: At the same time, when the first vertical plate moves downward, it will drive the connecting plate and the insert block to move downward, thereby causing the insert block to squeeze the compression block. Affected by the shearing force of the inclined plane, it will drive the vertical plate to move to one side, thereby causing the protruding block on the side of the vertical plate to protrude from the side of the second support plate. At the same time, when the vertical plate is separated, it will squeeze the third compression spring. S: When the support rollers lose control, the support will fall. At this time, the mounting plate located on the back of the support will encounter the protrusion block during the fall, thereby limiting the support from falling further and thus achieving the braking effect.

[0016] Beneficial effects The present invention has the following beneficial effects: 1. By linking the first braking component on the drive unit side with the second braking component on the lifting platform side, and relying on the locking effect of the first braking component on the drive column and the blocking effect of the second braking component on the lifting support, a dual protection is achieved: a first-stage braking quickly cuts off the power source, and a second-stage braking prevents the lifting component from falling. This effectively solves the problems of easy wear and failure of a single locking structure and lack of linkage protection in the background technology, which can easily lead to platform falls and other safety accidents. In particular, the two-stage braking components are triggered synchronously and work together, avoiding the hidden danger of no backup protection after the failure of a single braking component. At the same time, through the linkage design of the mechanical structure, no additional power is needed to drive the braking action, further improving the timeliness and stability of braking, and greatly improving the reliability and safety of emergency braking of the lifting equipment. This provides dual protection for the safety of personnel and equipment in scenarios such as high-altitude operations and heavy-load operations.

[0017] 2. By combining the centrifugal triggering structure and the mechanical locking structure in the first braking assembly, and the conical and inclined plane transmission structure and the mechanical blocking structure in the second braking assembly, rapid triggering and smooth execution of emergency braking are achieved. The centrifugal triggering structure can accurately capture signals of abnormal drive column speed. The first compression spring can not only prevent false braking but also provide stable reset capability for the impact block. The mechanical locking structure achieves rapid cut-off of the power source through the precise locking of the brake block and the first limit block, solving the problem of lag in response of the single locking structure. The conical and inclined plane transmission structure can efficiently convert the downward pressure of the insert block into the lateral thrust of the vertical plate, ensuring that the protruding block extends quickly to achieve blocking. The mechanical blocking structure disperses the force and avoids local force concentration through the rigid contact between the protruding block and the mounting plate, solving the problem of fatigue damage caused by force concentration in the single locking structure in the background technology, which cannot adapt to the needs of heavy-duty and high-altitude operations.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the overall rear structure of the present invention; Figure 3 This is a schematic diagram of the structure of the driving component of the present invention; Figure 4 This is a front structural diagram of the lifting assembly of the present invention; Figure 5 This is a schematic diagram of the rear structure of the lifting assembly of the present invention; Figure 6 This is a side view of the first braking component of the present invention; Figure 7 This is a schematic diagram of the structure of the first braking component of the present invention; Figure 8 This is a schematic diagram of the structure of the first braking assembly, the connecting plate, and the insert block of the present invention; Figure 9 This is a schematic diagram of the top structure of the second braking assembly of the present invention; Figure 10 This is a partial structural diagram of the second braking component of the present invention; Figure 11 This is a schematic diagram of the bottom structure of the second braking component of the present invention.

[0020] In the picture: 1. Support frame; 2. Drive assembly; 201. Mounting base; 202. Drive motor; 203. Support roller; 204. Support base; 205. Lifting rope; 206. Drive column; 3. First braking assembly; 301. First sleeve; 302. Rectangular frame; 303. Vertical rod; 304. First compression spring; 305. Impact block; 306. Second sleeve; 307. First limiting block; 308. First support plate; 309. First support arm; 310. Top plate; 3100. Braking block; 311. Limiting groove; 312. Second limiting block; 313. First vertical plate; 314. Bottom plate; 315. Side plate; 316. Limiting rod; 317. Second compression spring; 318. Rotating block; 319. Support block; 4. Lifting assembly; 401. Bracket; 402. Limiting pulley; 403. Boom; 404. Second support arm; 405. Mounting plate; 406. Slider; 5. Second braking assembly; 501. Second support plate; 5010. Rectangular hole; 502. Second vertical plate; 5020. Protrusion block; 5021. Extrusion block; 503. Crossbar; 504. Right angle plate; 505. Third compression spring; 506. Mounting block; 6. Counterweight body; 7. Connecting plate; 8. Insert block. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0023] Please see Figures 1-10 This invention provides a technical solution: an emergency braking transmission linkage device and control method for lifting equipment, including a support frame 1. The support frame 1 serves as the mounting base for the entire linkage device, used to fix and support a drive component 2, a first braking component 3, and a second braking component 5. The drive component 2 is provided on one side of the top of the support frame 1, and the first braking component 3 is provided on the other side of the drive component 2. The first braking component 3 serves as a primary emergency braking mechanism, mainly used to quickly trigger braking action when the drive component malfunctions. The second braking component 5 is provided in the center of the front of the support frame 1. The second braking component 5 serves as a secondary emergency braking mechanism, working in conjunction with the first braking component 3 to further restrict the movement of the lifting components on the basis of primary braking, achieving dual braking protection and improving the reliability and safety of braking.

[0024] The drive assembly 2 includes a mounting base 201 disposed on one side of the top of the support frame 1. The mounting base 201 is used to fix and install the drive motor 202, providing a stable mounting platform for the drive motor 202. The drive motor 202 is disposed on one side of the mounting base 201. The drive motor 202 is the power output source, which transmits power through the drive column 206 at the output end to drive the subsequent lifting components. The drive column 206 is the core shaft for power transmission, transmitting the power of the drive motor 202 on one hand, and also acting as the target of the first braking assembly 3 on the other hand.

[0025] The first braking assembly 3 includes a first sleeve 301 sleeved at the end of the drive column 206. The first sleeve 301 rotates synchronously with the drive column 206, driving the vertical rod 303 to rotate with the drive column 206, providing a mounting carrier for the centrifugal motion of the impact block 305. The vertical rod 303 is provided on the outer surface of the first sleeve 301. The vertical rod 303 is used to mount the rectangular frame 302 and the first compression spring 304, and at the same time transmits the rotational power of the first sleeve 301, driving the impact block 305 to perform circular motion. The vertical rod 303 movably passes through the rectangular frame 302, which can slide up and down along the vertical rod 303. At the same time, it works with the first compression spring 304 to realize the reset function of the impact block 305. The bottom end of the rectangular frame 302 is provided with the impact block 305, which is the trigger of the first braking assembly 3. When the rotational speed of the drive column 206 increases abnormally, it will trigger the impact block 305. Under the action of centrifugal force, it expands outward and triggers subsequent braking action by impacting the first support plate 308. The outer peripheral surface of the vertical rod 303 is fitted with a first compression spring 304. The two ends of the first compression spring 304 abut against the top of the rectangular frame 302 and the bottom of the vertical rod 303, respectively. Its main function is to provide a reset elastic force for the rectangular frame 302 and the impact block 305. When the drive column 206 rotates at normal speed, it restricts the impact block 305 to the initial position to avoid accidental braking. At the same time, after braking, it drives the impact block 305 to return to its original position. The drive column 206 is fixedly fitted with a second sleeve 306. The second sleeve 306 rotates synchronously with the drive column 206 and is used to install a first limit block 307. The first limit block 307 is used to engage with the brake block 3100. The mechanical engagement prevents the second sleeve 306 from continuing to rotate, thereby stopping the drive column 206.

[0026] The bottom of the second sleeve 306 is provided with a first support plate 308. The first support plate 308 serves as the mounting carrier for the first support arm 309 and is also the impact force-bearing component of the impact block 305. Its position change directly controls the state of the first support arm 309. The top end of the first support plate 308 is symmetrically hinged with the first support arm 309. The two first support arms 309 are used to support the top plate 310 and maintain the initial height of the top plate 310. Its hinge structure can realize angle adjustment. When the first support plate 308 moves, the support on the top plate 310 is released. The top ends of the two first support arms 309 abut against the top plate 310. The top plate 310 is used to install the brake block 3100. Its own weight provides power for the locking action of the brake block 3100. After losing support, it can fall quickly. The brake block 3100 is the braking component of the first braking assembly 3. By engaging with the first limiting block 307, it directly restricts the rotation of the second sleeve 306 and the drive column 206 to achieve first-level braking.

[0027] The first support arm 309 is inclined, which allows it to remain stable when supporting the top plate 310. It also facilitates rapid disengagement from the top plate 310 when the first support plate 308 moves downwards, preventing jamming and ensuring a smooth fall of the top plate 310. A limiting groove 311 is provided at one bottom end of the top plate 310 to abut against the top of the first support arm 309. This limiting groove 311 limits the top of the first support arm 309, preventing displacement during support and ensuring stable support. Qualitatively, the top plate 310 has symmetrically movable second limiting blocks 312 on both sides. The second limiting blocks 312 are used to restrict the movement trajectory of the top plate 310, ensuring that the top plate 310 can only move up and down in the vertical direction, preventing it from deviating during the fall, and ensuring that the brake block 3100 can accurately engage with the first limiting block 307. The bottom ends of the two second limiting blocks 312 are fixedly connected to the top of the drive assembly 2. By fixing the position of the second limiting blocks 312, the limiting effect of the top plate 310 is further strengthened, ensuring the stability of its movement trajectory.

[0028] A base plate 314 is provided at the bottom of the first support plate 308. The bottom of the base plate 314 is fixedly connected to one side of the top of the support frame 1. The base plate 314 serves as the mounting base for the side plates 315, used to fix and support the lower structure of the entire first braking assembly 3, ensuring the initial position of the first support plate 308 is stable. Side plates 315 are symmetrically arranged on both sides of the base plate 314. The side plates 315 are used to install the limiting rod 316 and the second compression spring 317, providing support for the rotation of the rotating block 318 and limiting the extension and retraction direction of the second compression spring 317. The limiting rod 316 is used to fix the rotating block 318 and provide axial support for the rotation of the rotating block 318, ensuring that the rotating block 318 can rotate smoothly around the limiting rod 316. The rotating block 318 is used to install the support block 319. Its rotation can drive the support block 319 to detach from the first support plate 308, releasing the support of the first support plate 308. The bottom ends of the multiple rotating blocks 318 are rotatably connected to the side plates 315. The connection structure ensures that the rotating block 318 can rotate flexibly, guaranteeing smooth braking triggering. Multiple second sleeves 306 have second compression springs 317 fitted on their outer peripheral surfaces. One end of the second compression spring 317 abuts against one side of the side plate 315, and the other end abuts against one side of the rotating block 318. When the support block 319 is not compressed, it restricts the rotating block 318 and the support block 319 to their initial positions, ensuring that the support block 319 can stably support the first support plate 308. A support block 319 is fixedly connected to the center of one side of each of the multiple rotating blocks 318. The support block 319 supports the first support plate 308, maintaining its initial height. One side of the support block 319 is semi-circular. This semi-circular structure reduces the friction between the support block 319 and the first support plate 308, allowing the first support plate 308 to quickly compress the support block 319 upon impact, causing the rotating block 318 to rotate and ensuring timely braking triggering.

[0029] A first vertical plate 313 is fixedly connected to the middle of one end of the first support plate 308. The first vertical plate 313 is used to connect the connecting plate 7 to realize the linkage between the first support plate 308 and the insert block 8. The downward movement of the first support plate 308 is converted into the downward movement of the insert block 8. The connecting plate 7, as the intermediate component connecting the first vertical plate 313 and the insert block 8, plays a role in force transmission, ensuring that the movement of the first vertical plate 313 can synchronously drive the movement of the insert block 8. The insert block 8 is a linkage component between the first braking assembly 3 and the second braking assembly 5. Its downward movement can trigger the braking action of the second braking assembly 5. The bottom of the insert block 8 is conical. This conical structure can convert the downward pressure of the insert block 8 into a lateral thrust on the pressing block 5021, which facilitates pushing the second vertical plate 502 to move to both sides, ensuring that the second braking assembly 5 can be triggered quickly.

[0030] The second braking assembly 5 includes a second support plate 501 disposed in the middle of one side of the support frame 1. The second support plate 501 serves as the mounting base for the second braking assembly 5 and is used to install components such as the second vertical plate 502 and the crossbar 503. It also provides guidance and support for the sliding of the bracket 401. A rectangular hole 5010 is provided inside the second support plate 501. The rectangular hole 5010 is used to accommodate the second vertical plate 502 and provides space for the lateral movement of the second vertical plate 502, ensuring that the second vertical plate 502 can slide flexibly. The second vertical plate 502 symmetrically moves through the rectangular hole 5010. The second vertical plate 502 is used to install the protrusion 5020 and the pressing block 5021. Its lateral movement can drive the protrusion 5020 to extend or retract. The protrusion 5020 is the braking component of the second braking assembly 5. When it extends, it can prevent the bracket 401 from falling. Secondary braking is achieved through mechanical blocking, which limits the further movement of the lifting component.

[0031] The second support plate 501 has multiple symmetrical holes on both sides that fit the protrusions 5020. These holes allow the protrusions 5020 to extend out, ensuring they can pass smoothly through the second support plate 501 and block the bracket 401. They also facilitate the retraction of the protrusions 5020 when the second vertical plate 502 is reset. A horizontal bar 503 is movably inserted through the bottom ends of the two second vertical plates 502. The horizontal bar 503 restricts the movement trajectory of the second vertical plates 502, ensuring they can only move laterally along the length of the horizontal bar 503. Right-angle plates 504 are fixedly connected to both ends of the horizontal bar 503, with one end of each right-angle plate 504 fixedly connected to both sides of the second support plate 501. Next, the right-angle plate 504 is used to fix the position of the crossbar 503 and at the same time provide a support point for the third compression spring 505 to ensure that the third compression spring 505 can extend and retract stably. The outer peripheral surface of the crossbar 503 is provided with the third compression spring 505 on both sides of the two second vertical plates 502. One end of the two third compression springs 505 abuts against one side of the second vertical plate 502, and the other end of the two third compression springs 505 abuts against one side of the right-angle plate 504. Its main function is to provide the second vertical plate 502 with the reset elastic force. After the pressure of the insert block 8 is removed, it drives the second vertical plate 502 and the protrusion block 5020 to return to their original positions, release the obstruction to the bracket 401, and facilitate the equipment to resume normal operation.

[0032] Each of the two second vertical plates 502 has a pressing block 5021 at its top. The pressing block 5021 is used to cooperate with the insert block 8 to convert the downward movement of the insert block 8 into the lateral movement of the second vertical plate 502. It is the triggering component of the second braking assembly 5. The inner side of the top of each pressing block 5021 is provided with an inclined surface. This inclined surface is adapted to the conical surface of the insert block 8, which can effectively amplify the downward pressure of the insert block 8, ensuring that the second vertical plate 502 can be smoothly pushed to move to both sides and avoiding jamming. The plug-in structure ensures that the downward movement of the insert block 8 can be accurately applied to the pressing block 5021, realizing the effective transmission of force and ensuring the synchronous triggering of the second braking assembly 5. One side of the second support plate 501 is provided with mounting blocks 506 that are fixedly connected to the support frame 1 at equal intervals. The mounting blocks 506 are used to further fix the position of the second support plate 501, enhance the load-bearing capacity of the second support plate 501, prevent it from deforming or displacing during braking, and ensure the stable operation of the second braking assembly 5.

[0033] The drive column 206 movably passes through the support roller 203 and the support base 204. The support roller 203 supports the suspension rope 205. The surface of the support roller 203 is provided with anti-slip grooves. Through friction, the rotation of the drive column 206 is converted into the raising and lowering of the suspension rope 205, thereby driving the lifting component to move. The support base 204 is located at both ends of the support roller 203, and its bottom is fixedly connected to the top of the support frame 1. The support base 204 supports the drive column 206 and the support base 204, ensuring that both can rotate smoothly and reducing friction during rotation. The outer circumferential surface of the support roller 203 is symmetrically provided with support... The symmetrical arrangement of roller 203 ensures uniform force distribution and prevents it from shifting during rotation, thus guaranteeing the stability of the hoisting rope 205 during winding and unwinding. A counterweight body 6 is slidably mounted on one side of the support frame 1. The counterweight body 6 is used to balance the weight of the lifting components, reducing the load on the drive motor 202. In case of equipment malfunction, it can assist braking through its own weight, improving the braking effect. The top center of the counterweight body 6 is fixedly connected to the end of the hoisting rope 205. The hoisting rope 205 is used to connect the counterweight body 6 and the lifting assembly 4, transmitting driving force and realizing the synchronous lifting of the counterweight body 6 and the lifting assembly 4.

[0034] It should be noted that the drive motor 202 requires an external power supply and is an existing device. The specific working principle is existing technology and will not be described in detail here. The counterweight body 6 is made by the counterweight block cross frame and the connecting arm, and both are existing devices and will not be described in detail here.

[0035] A lifting assembly 4 is provided on one side of the support frame 1. The lifting assembly 4 is the actuating component of the lifting device, used to drive the object to be lifted to move up and down. It is also the target of the second braking assembly 5. The lifting assembly 4 includes a bracket 401 located in the middle of one side of the support frame 1. The bracket 401 serves as the mounting body of the lifting assembly 4, used to install components such as the limiting pulley 402 and the boom 403, and to bear the weight of the object to be lifted. The top two sides of the bracket 401 are symmetrically provided with limiting pulleys 402 that are slidably connected to the support frame 1. The limiting pulleys 402 are used to limit the sliding trajectory of the bracket 401, ensuring that the bracket 401 can move smoothly up and down along the support frame 1 and preventing it from deviating or swaying. Two booms 403 are symmetrically arranged at the top center of the support 401. The two booms 403 are fixedly connected to the other end of the suspension rope 205. The booms 403 are used to connect the suspension rope 205, transmit the tension of the suspension rope 205, and drive the support 401 to move up and down. The two booms 403 are fixedly connected to the other end of the suspension rope 205 to ensure that the tension of the suspension rope 205 can be stably transmitted to the support 401. A second support arm 404 is symmetrically arranged below one side of the support 401. The second support arm 404 is used to assist in supporting the support 401, enhance the structural stability of the support 401, and prevent it from deforming when bearing heavy objects. The mass difference between the object lifted by the second support arm 404 and the counterweight block in the counterweight body 6 is within ten kilograms.

[0036] On the other side of the bracket 401, mounting plates 405 are symmetrically arranged above and below the center. The mounting plates 405 are used to install sliders 406 and enhance the structural strength of the bracket 401. Sliders 406 are fixedly connected to the outer surfaces of multiple mounting plates 405. The sliders 406 are slidably connected to the side of the second support plate 501 to assist the bracket 401 in sliding smoothly along the second support plate 501 and reduce friction during the sliding process. At the same time, they work with the protrusion 5020 to achieve braking. When the slider 406 encounters the protrusion 5020, it will be blocked, thereby limiting the continued descent of the bracket 401. One end of multiple sliders 406 is slidably connected to the side of the second support plate 501 to ensure the stability of the sliding trajectory of the bracket 401 and improve the smoothness of the lifting process.

[0037] A method for emergency braking of lifting equipment: S1: First, when the drive motor 202 malfunctions, causing the support roller 203 to lose control, the rotational speed of the drive column 206 will increase rapidly, resulting in a rapid increase in centrifugal force. This abnormal rotational speed is the trigger signal for emergency braking. Its core function is to activate the working process of the first braking component 3. At this time, the centrifugal force will increase the rotation radius of the impact block 305 mounted on the surface of the drive column 206, while simultaneously compressing the first compression spring 304. The compression process of the first compression spring 304 provides buffer for the centrifugal expansion of the impact block 305 and prepares for subsequent reset. When the impact block 305 hits the first support plate 308 during rotation, the first support plate 308 will be subjected to a downward impact force. This impact force is used to trigger the displacement of the support block 319. Since one side of the support block 319 is semi-circular, the compressed support block 319 will move to one side. The semi-circular structure effectively reduces friction, ensuring that the support block 319 can move quickly, thereby causing the rotating block 318 and the limiting rod 316 to rotate. This causes the support block 319 to disengage from the first support plate 308, releasing the support for the first support plate 308. When the first support plate 308 moves downward, the top of the first support arm 309, which is hinged at both ends of the top of the first support plate 308, will disengage from the top plate 310. The unsupported top plate 310 will automatically fall under its own weight, and its gravity will provide power for the engagement of the brake block 3100. Ultimately, the brake block 3100 will engage with the first limiting block 307 on the surface of the second sleeve 306, preventing the second sleeve 306 from continuing to rotate through mechanical engagement, thereby stopping the drive column 206, achieving first-level emergency braking, quickly cutting off the power output, and preventing the equipment from further losing control.

[0038] S2: Simultaneously, when the vertical rod 303 moves downward along with the first support plate 308, it will synchronously drive the connecting plate 7 and the insert block 8 to move downward, realizing the linkage between the first braking assembly 3 and the second braking assembly 5, ensuring that the two-stage braking can be triggered synchronously. During the downward movement of the insert block 8, it will squeeze the compression block 5021. Since the bottom of the insert block 8 is a conical surface and the inner side of the top of the compression block 5021 is a slope, the two work together to generate a shearing force. The function of this shearing force is to convert the downward pressure of the insert block 8 into the lateral thrust of the second vertical plate 502. This causes the compression block 5021 and the second vertical plate 502 to move to one side. The lateral movement of the second vertical plate 502 will cause the protruding block 5020 on its side to protrude through the side of the second support plate 501, preparing for the subsequent descent of the blocking bracket 401. At the same time, when the second vertical plate 502 is separated, it will compress the third compression spring 505. The compression of the third compression spring 505 not only provides a buffer for the movement of the second vertical plate 502, but also reserves elasticity for the reset after braking, ensuring that the equipment can quickly return to normal.

[0039] S3: When the support roller 203 loses control, the drive column 206 stops rotating, the suspension rope 205 loses tension, and the bracket 401 will fall under its own weight and the weight of the load. The fall of the bracket 401 is the target of the second braking component 5. At this time, the mounting plate 405 located on the back of the bracket 401 will be blocked by the protrusion 5020 during the fall. The protrusion 5020 generates a blocking force through mechanical contact with the mounting plate 405. This blocking force is used to limit the bracket 401 from falling further, thereby achieving the effect of secondary emergency braking and further preventing the lifting component from falling. The dual braking cooperation ensures that the equipment can quickly and stably achieve emergency braking, maximizing the safety of the equipment and personnel.

[0040] The working principle of this invention: Under normal operating conditions, drive assembly 2 serves as the core power source. Drive motor 202 transmits power through drive column 206 at the output end, driving support roller 203 to rotate. Support roller 203 utilizes the friction between its surface anti-slip grooves and suspension rope 205 to achieve the raising and lowering of suspension rope 205. One end of suspension rope 205 is connected to counterweight body 6, and the other end is connected to boom 403 of lifting assembly 4. Under the weight balance of counterweight body 6, support bracket 401 is driven to rise and fall smoothly along support frame 1 and second support plate 501. Limiting pulley 402 and slider 406 further restrict the movement trajectory of support bracket 401. To ensure a smooth and precise lifting process, the first braking assembly 3 is in standby mode, the first compression spring 304 restricts the impact block 305 to its initial position, the support block 319 stably supports the first support plate 308, the first support arm 309 supports the top plate 310, the braking block 3100 remains separated from the first limiting block 307, the second braking assembly 5 is also in standby mode, the third compression spring 505 restricts the second vertical plate 502 to its initial position, and the protruding block 5020 retracts into the rectangular hole 5010 of the second support plate 501, without affecting the normal lifting and lowering of the bracket 401.

[0041] When the drive motor 202 malfunctions, causing the support roller 203 to go out of control, the speed of the drive column 206 will increase sharply, triggering the emergency braking process. The first braking assembly 3 and the second braking assembly 5 work together to achieve dual protection. First, the centrifugal force generated by the abnormally increased speed of the drive column 206 overcomes the elastic force of the first compression spring 304, causing the impact block 305 to expand outward and increase its rotation radius, impacting the first support plate 308 and applying a downward impact force. The first support plate 308, under pressure, squeezes the support block 319. 9 has a semi-circular structure with low friction, which can drive the rotating block 318 to rotate around the limiting rod 316, causing the support block 319 to disengage from the first support plate 308. After the support is released, the first support plate 308 moves downward, causing the first support arm 309, which is hinged at its top, to disengage from the top plate 310. The top plate 310 falls under its own weight, causing the brake block 3100 to precisely engage with the first limiting block 307 on the second sleeve 306, preventing the second sleeve 306 and the drive column 206 from continuing to rotate, quickly cutting off the power output, and completing the first stage of braking.

[0042] At the same time as the first braking is initiated, when the first support plate 308 moves downward, the connecting plate 7 and the insert block 8 move downward synchronously through the first vertical plate 313. The conical surface at the bottom of the insert block 8 matches the inclined surface at the top of the extrusion block 5021, converting the downward pressure into a lateral thrust, which pushes the two second vertical plates 502 to move to both sides along the crossbar 503, compressing the third compression spring 505. The movement of the second vertical plates 502 causes the protrusion block 5020 to pass through the matching hole of the second support plate 501. At this time, the drive column 206 has stopped rotating, the suspension rope 205 loses tension, and the bracket 401 falls under the weight of itself and the load. When the mounting plate 405 on the back of the bracket 401 falls to the position of the protrusion block 5020, the protrusion block 5020 forms a mechanical block on the mounting plate 405, limiting the bracket 401 from falling further, thus completing the second braking.

[0043] The two-stage braking system works in tandem. The first-stage braking quickly cuts off the power source, while the second-stage braking further prevents the lifting component 4 from falling, forming a double safety protection system. This effectively solves the problems of easy failure of a single locking structure and lack of linkage protection.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An emergency braking transmission linkage device for lifting equipment, comprising a support frame (1), characterized in that: A drive assembly (2) is provided on one side of the top of the support frame (1), a first braking assembly (3) is provided on the other side of the drive assembly (2), and a second braking assembly (5) is provided in the center of the front of the support frame (1). The drive assembly (2) includes a mounting base (201) disposed on one side of the top of the support frame (1), a drive motor (202) is disposed on one side of the mounting base (201), and a drive column (206) is disposed at the output end of the drive motor (202). The first braking assembly (3) includes a first sleeve (301) sleeved at the end of the drive column (206). A vertical rod (303) is provided on the outer surface of the first sleeve (301). A rectangular frame (302) is movably passed through the vertical rod (303). An impact block (305) is provided at the bottom end of the rectangular frame (302). A first compression spring (304) is sleeved on the outer peripheral surface of the vertical rod (303). The two ends of the first compression spring (304) abut against the top of the rectangular frame (302) and the bottom end of the vertical rod (303), respectively. The drive column (206) is fixedly sleeved with a second sleeve (306), and a first limiting block (307) is provided on the outer peripheral surface of the second sleeve (306). The bottom of the second sleeve (306) is provided with a first support plate (308), and the top end of the first support plate (308) is symmetrically hinged with a first support arm (309). The top ends of the two first support arms (309) abut against a top plate (310), and a brake block (3100) is provided in the middle of the bottom of the top plate (310).

2. The emergency braking transmission linkage device for lifting equipment according to claim 1, characterized in that: The first support arm (309) is inclined, and the bottom end of the top plate (310) is provided with a limiting groove (311) that abuts against the top of the first support arm (309). The top plate (310) is symmetrically and movably connected with second limiting blocks (312). The bottom ends of the two second limiting blocks (312) are fixedly connected to the top of the drive assembly (2).

3. The emergency braking transmission linkage device for lifting equipment according to claim 1, characterized in that: The bottom of the first support plate (308) is provided with a base plate (314), the bottom of the base plate (314) is fixedly connected to the top side of the support frame (1), and side plates (315) are symmetrically provided on both sides of the base plate (314). A limit rod (316) is movably passed through the middle of each of the side plates (315). A rotating block (318) is fixedly connected to one end of each of the limit rods (316), and the bottom end of each of the rotating blocks (318) is rotatably connected to the side plate (315). A second compression spring (317) is sleeved on the outer peripheral surface of each of the second sleeves (306). One end of the second compression spring (317) abuts against one side of the side plate (315), and the other end of the second compression spring (317) abuts against one side of the rotating block (318). A support block (319) is fixedly connected to the middle of one side of the plurality of rotating blocks (318). One side of the support block (319) is semi-circular. A first vertical plate (313) is fixedly connected to the middle of one end of the first support plate (308). A connecting plate (7) is fixedly connected to the bottom end of the first vertical plate (313). An insert (8) is fixedly connected to one end of the connecting plate (7). The bottom of the insert (8) is conical.

4. The emergency braking transmission linkage device for lifting equipment according to claim 1, characterized in that: The second braking assembly (5) includes a second support plate (501) disposed in the middle of one side of the support frame (1). A rectangular hole (5010) is provided inside the second support plate (5010). A vertical plate (502) is symmetrically and movably inserted through the rectangular hole (5010). A plurality of protrusions (5020) are fixedly provided at equal intervals on one side of the vertical plate (502).

5. The emergency braking transmission linkage device for lifting equipment according to claim 5, characterized in that: The second support plate (501) has multiple holes symmetrically opened on both sides to fit the protrusions (5020). The bottom ends of the two second vertical plates (502) are movably connected with crossbars (503). Both ends of the crossbars (503) are fixedly connected with right angle plates (504). One end of the two right angle plates (504) is fixedly connected to both sides of the second support plate (501). The outer peripheral surface of the crossbars (503) is provided with third compression springs (505) on both sides of the two second vertical plates (502). One end of the two third compression springs (505) abuts against one side of the vertical plate (502), and the other end of the two third compression springs (505) abuts against one side of the right angle plate (504).

6. The emergency braking transmission linkage device for lifting equipment according to claim 5, characterized in that: The top of each of the two second vertical plates (502) is provided with a pressing block (5021), and the inner side of the top of each of the two pressing blocks (5021) is provided with a slope. Both pressing blocks (5021) are inserted into the insert block (8). The second support plate (501) is provided with mounting blocks (506) that are fixedly connected to the support frame (1) at equal intervals on one side.

7. The emergency braking transmission linkage device for lifting equipment according to claim 1, characterized in that: The drive column (206) movably passes through the support roller (203) and the support seat (204). The support seat (204) is located at both ends of the support roller (203) and its bottom is fixedly connected to the top of the support frame (1). The support seats (204) are symmetrically arranged on the outer peripheral surface of the support roller (203). A counterweight body (6) is slidably arranged on one side of the support frame (1). The top middle of the counterweight body (6) is fixedly connected to the end of the suspension rope (205).

8. The emergency braking transmission linkage device for lifting equipment according to claim 1, characterized in that: A lifting assembly (4) is provided on one side of the support frame (1). The lifting assembly (4) includes a bracket (401) located in the middle of one side of the support frame (1). Limiting pulleys (402) that are slidably connected to the support frame (1) are symmetrically arranged on both sides of the top of the bracket (401). A boom (403) is symmetrically arranged in the middle of the top of the bracket (401). The two booms (403) are fixedly connected to the other end of the hoisting rope (205). A second support arm (404) is symmetrically arranged below one side of the bracket (401).

9. The emergency braking transmission linkage device for lifting equipment according to claim 9, characterized in that: On the other side of the bracket (401), mounting plates (405) are symmetrically arranged above and below the center. A slider (406) is fixedly connected to the outer surface of the mounting plates (405). One end of the slider (406) is slidably connected to the side of the second support plate (501).

10. The emergency braking transmission linkage device for lifting equipment according to claim 1, applied to the working method of emergency braking of lifting equipment according to any one of claims 1-9, characterized in that: Includes the following steps: S1: First, when the drive motor (202) malfunctions and causes the support roller (203) to go out of control, the rotation speed of the drive column (206) will increase rapidly, resulting in a rapid increase in centrifugal force. This will increase the rotation radius of the impact block (305) mounted on the surface of the drive column (206), and at the same time squeeze the first compression spring (304). At this time, when the impact block (305) hits the first support plate (308) during rotation, the first support plate (308) will squeeze the support block (319). Since one side of the support block (319) is semi-circular, the squeezed support block (319) will be compressed. 19) When squeezed, it will move to one side, thereby causing the rotating block (318) and the limiting rod (316) to rotate, thereby causing the support block (319) to separate from the first support plate (308). When the first support plate (308) moves downward, the top of the support arm (309) hinged at both ends of the top of the first support plate (308) will separate from the top plate (310), causing the top plate (310) to fall automatically under the action of gravity, thereby causing the brake block (3100) to engage with the limiting block (307) on the surface of the second sleeve (306), thereby stopping the drive column (206). S2: At the same time, when the first vertical plate (313) moves downward, it will drive the connecting plate (7) and the insert block (8) to move downward, thereby driving the insert block (8) to squeeze the compression block (5021). Affected by the shearing force of the inclined plane, it will drive (5021) and the vertical plate (502) to move to one side, thereby causing the protruding block (5020) on the side of the vertical plate (502) to protrude from the side of the second support plate (501). At the same time, when the vertical plate (502) is separated, it will squeeze the third compression spring (505). S3: When the support roller (203) loses control, the bracket (401) will fall. At this time, the mounting plate (405) located on the back of the bracket (401) will be blocked by the protrusion (5020) during the fall, thereby limiting the bracket (401) from continuing to fall, thus achieving the braking effect.

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