Synchronous belt elevator

Abstract

The utility model provides a synchronous belt elevator. Comprising a synchronous belt structure and a conveying structure, the anti-falling structure comprises a main body part and a supporting part, the supporting part is located on the side, away from the synchronous belt, of the main body part, and the main body part is connected with the conveying structure; a plurality of supporting grooves are formed in the supporting part, and supporting protrusions matched with the supporting grooves are arranged on the main body part; the telescopic part on the main body part is located on the side, away from the supporting part, of the main body part and is telescopically arranged in the extending direction from the supporting part to the main body part. When at least part of the main body part abuts against the synchronous belt, the main body part and the supporting part are spaced from each other, and the telescopic part is in a retracted state; and when at least part of the main body part is separated from the synchronous belt, the telescopic part is in a stretching-out state, so that the supporting bulge is pushed into one of the plurality of supporting grooves. According to the technical scheme provided by the utility model, the technical problem that a conveying structure of a synchronous belt elevator in the prior art can fall off and be damaged when a synchronous belt is broken can be solved.

Description

Technical Field

[0001] This utility model relates to the field of synchronous belt hoisting technology, and more specifically, to a synchronous belt hoisting machine. Background Technology

[0002] Currently, synchronous belt elevators are widely used in industrial automation and logistics systems. They primarily achieve vertical material transport through the meshing of synchronous belts and pulleys. However, synchronous belts may break under prolonged operation or abnormal loads. Once a synchronous belt breaks, the elevator's conveying structure loses its drive support, causing materials to fall freely. This can damage the conveying structure itself and cause serious injury to equipment or personnel below, resulting in significant economic losses and safety hazards.

[0003] However, existing synchronous belt elevators typically rely on mechanical braking devices, such as brake pads or brakes, to urgently stop the elevator when dealing with synchronous belt breakage. However, this braking method has a slow response time, and in the event of a complete synchronous belt breakage, the braking device cannot prevent the conveyor structure from sagging, leading to damage to both the material and the conveyor structure. Utility Model Content

[0004] The main objective of this invention is to provide a synchronous belt hoist to solve the technical problem that the conveying structure of the existing synchronous belt hoist will fall and be damaged when the synchronous belt breaks.

[0005] To achieve the above objectives, this utility model provides a synchronous belt hoist, comprising:

[0006] The synchronous belt structure includes a synchronous pulley and a synchronous belt wound around the synchronous pulley; the conveyor structure is connected to the synchronous belt drive.

[0007] The fall protection structure includes a main body and a support body. The support body is located on the side of the main body away from the synchronous belt, and the main body is connected to the conveying structure. The support body is provided with a plurality of support grooves spaced apart along the extension direction of the synchronous belt, and the main body is provided with a support protrusion that matches any one of the plurality of support grooves.

[0008] The main body is at least partially used to abut against the timing belt; a telescopic part is provided on the main body, which is located on the side of the main body away from the support part and is telescopically provided along the extension direction from the support part to the main body; when at least part of the main body abuts against the timing belt, the main body and the support part are spaced apart from each other, and the telescopic part is in a retracted state; when at least part of the main body is disengaged from the timing belt, the telescopic part is in an extended state to push the support protrusion into one of the plurality of support grooves.

[0009] Furthermore, there are at least two synchronous belt structures, and the at least two synchronous belt structures are spaced apart along a predetermined direction; the main body includes:

[0010] At least two abutting members, at least two abutting members forming at least a portion of the main body;

[0011] At least two adjusting members, at least two abutting members and at least two synchronous belt structures are all provided in a one-to-one correspondence, and each adjusting member is located on the side of the corresponding abutting member away from the corresponding synchronous belt and is connected to the corresponding abutting member.

[0012] The adjusting element is movably configured to adjust the contact pressure between the corresponding abutment and the corresponding timing belt.

[0013] Furthermore, the synchronous belt hoist also includes a drive motor, the drive end of which is connected to the synchronous belt pulley; the synchronous belt hoist also includes:

[0014] The sensor is mounted on the main body.

[0015] A proximity switch is installed on the conveyor structure. The sensing end of the proximity switch is located on the side of the main body away from the support. When at least one of the at least two abutting parts abuts against the corresponding synchronous belt, the sensing end is positioned opposite to the sensing plate, and the proximity switch is in a de-energized state. When both of the at least two abutting parts are disengaged from the corresponding synchronous belt, the sensing end is misaligned with the sensing plate, and the proximity switch is in an energized state.

[0016] The drive motor is connected to the proximity switch signal; when the proximity switch is de-energized, the drive end of the drive motor drives the synchronous pulley; when the proximity switch is energized, the brake end of the drive motor brakes the synchronous pulley.

[0017] Furthermore, at least one of the two abutting members is located on one side of the sensing sheet, and the other is located on the other side of the sensing sheet; and / or,

[0018] The sensing element is disposed on one side of at least two abutment members near the support; and / or,

[0019] The extension direction of the sensing element is perpendicular to the extension direction of the contact element.

[0020] Furthermore, the telescopic part includes:

[0021] The elastic member extends along the direction from the support to the main body. One side of the elastic member is connected to the main body, and the other side overlaps or connects to the adjustment member. The adjustment member is movably disposed in the direction close to or away from the main body.

[0022] Furthermore, the main body includes:

[0023] A first main body and a second main body are interconnected, with at least a portion of the second main body located on the side of the first main body away from the support portion; a first mounting cavity is provided on the first main body, and a second mounting cavity is provided on at least a portion of the second main body, the first mounting cavity and the second mounting cavity are opposite to each other and connected to form a mounting cavity together, an elastic member is provided in the mounting cavity, and an adjusting member is sleeved on at least a portion of the second main body, and the adjusting member is threadedly connected to at least a portion of the second main body.

[0024] Furthermore, the synchronous belt hoist also includes a drive motor, the drive end of which is connected to the synchronous belt pulley; the synchronous belt hoist also includes:

[0025] A detection component, mounted on the conveyor structure, includes a main body, a limit switch, and a tension elastic element. The limit switch is rotatably mounted on the main body, and one end of the tension elastic element is fixed to the main body while the other end is connected to the limit switch. When the synchronous belt is in normal operation, the end of the limit switch away from the tension elastic element abuts against the synchronous belt, keeping the limit switch stationary in its normally open position. When the synchronous belt is broken, the tension elastic element retracts, causing the limit switch to rotate by a predetermined angle to its closed position.

[0026] The drive motor is connected to the limit switch signal. When the limit switch is in the normally open position, the drive end of the drive motor drives the synchronous pulley to move; when the limit switch is in the closed position, the brake end of the drive motor brakes the synchronous pulley.

[0027] Furthermore, the detection components also include:

[0028] A fastener is provided on the body and protrudes from the outer surface of the body; one end of the tension elastic element is fixed to the end of the fastener away from the body.

[0029] In this case, along the extension direction from the limit switch to the body component, the distance between the side of the limit switch away from the body component and the body component is equal to the distance between the end of the fixing component away from the body component and the body component.

[0030] Furthermore, there are at least two synchronous belt structures, which are spaced apart along a preset direction; there are at least two detection components, which are arranged in a one-to-one correspondence with the at least two synchronous belt structures.

[0031] Furthermore, the support portion is a rack structure extending along the extension direction of the synchronous belt; and / or,

[0032] The support groove includes a first groove surface and a second groove surface. The first groove surface and the second groove surface are set at a preset angle, which is greater than 0 degrees and less than 90 degrees. One side of the first groove surface is located above the second groove surface, and the other side is connected to the second groove surface. The side of the second groove surface away from the first groove surface is located above the side of the second groove surface that is closer to the first groove surface.

[0033] By applying the technical solution of this utility model, the contact relationship between at least a portion of the main body and the synchronous belt improves the response speed to abnormal situations of the synchronous belt. When the synchronous belt breaks or an abnormality occurs, at least a portion of the main body and the synchronous belt cannot maintain contact and disengage. The telescopic part of the main body then changes from a retracted state to an extended state, pushing the support protrusion into the support groove of the support part, achieving interlocking and locking between the structures. This effectively prevents the free fall of the conveyor structure when the synchronous belt breaks, protecting the equipment from damage and ensuring the safety of operators. This design can detect the operating status of the synchronous belt in real time. Once an abnormality is detected, the anti-fall protection can be quickly activated. Compared with the braking methods in the prior art that require manual intervention or have a long reaction time, this significantly improves the response speed and safety of the hoist in emergency situations. At the same time, this design can implement anti-fall protection immediately when the synchronous belt breaks, reducing the probability of equipment damage caused by synchronous belt breakage, reducing equipment downtime, and thus reducing maintenance and repair costs. Therefore, the technical solution of this utility model can solve the technical problem of the conveyor structure falling and being damaged when the synchronous belt breaks in the prior art. Attached Figure Description

[0034] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0035] Figure 1 A front view of a synchronous belt hoist provided according to an embodiment of the present invention is shown;

[0036] Figure 2 A partial side view of a synchronous belt hoist provided according to an embodiment of the present invention is shown;

[0037] Figure 3 A top view of a portion of the structure of a synchronous belt hoist provided according to an embodiment of the present invention is shown;

[0038] Figure 4 A schematic diagram of the main body of a synchronous belt hoist provided according to an embodiment of the present invention is shown;

[0039] Figure 5A front view of the main body of a synchronous belt hoist provided according to an embodiment of the present invention is shown;

[0040] Figure 6 A partial cross-sectional view of the main body of a synchronous belt hoist provided according to an embodiment of the present invention is shown;

[0041] Figure 7 A schematic diagram of the structure of the detection assembly of the synchronous belt hoist provided according to an embodiment of the present invention is shown;

[0042] Figure 8 A partial side view of the support portion of a synchronous belt hoist provided according to an embodiment of the present invention is shown.

[0043] The above figures include the following reference numerals:

[0044] 1. Synchronous belt structure; 11. Synchronous pulley; 12. Synchronous belt;

[0045] 2. Conveying structure;

[0046] 3. Main body;

[0047] 31. Supporting protrusion; 32. Telescopic part; 321. Elastic element; 322. Adjusting element; 33. Abutting element; 34. Adjusting element; 35. Sensing plate;

[0048] 301. First main body; 3011. First mounting cavity; 302. Second main body; 3021. Second mounting cavity;

[0049] 4. Support part; 41. Support groove; 411. First groove surface; 412. Second groove surface;

[0050] 5. Drive motor;

[0051] 6. Proximity switch;

[0052] 7. Detection components;

[0053] 71. Body component; 72. Limit switch; 73. Tensile elastic component; 74. Fixing component;

[0054] 8. Framework;

[0055] 9. Guide rail. Detailed Implementation

[0056] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0057] like Figures 1 to 8As shown, an embodiment of this utility model provides a synchronous belt elevator, which includes a synchronous belt structure 1 and a conveying structure 2. The synchronous belt structure 1 includes a synchronous pulley 11 and a synchronous belt 12 wound around the synchronous pulley 11; the conveying structure 2 is drivenly connected to the synchronous belt 12. The synchronous belt elevator also includes a fall protection structure, which includes a main body 3 and a support part 4. The support part 4 is located on the side of the main body 3 away from the synchronous belt 12, and the main body 3 is connected to the conveying structure 2; the support part 4 is provided with a plurality of support grooves 41 spaced apart along the extension direction of the synchronous belt 12, and the main body 3 is provided with a support protrusion 31 that matches any one of the plurality of support grooves 41. At least a portion of the main body 3 is used to abut against the timing belt 12; a telescopic portion 32 is provided on the main body 3, which is located on the side of the main body 3 away from the support portion 4 and is telescopically provided along the extension direction from the support portion 4 to the main body 3; when at least a portion of the main body 3 abuts against the timing belt 12, the main body 3 and the support portion 4 are spaced apart, and the telescopic portion 32 is in a retracted state; when at least a portion of the main body 3 is disengaged from the timing belt 12, the telescopic portion 32 is in an extended state to push the support protrusion 31 into one of the plurality of support grooves 41.

[0058] The synchronous belt hoist provided by the embodiments of this utility model improves the response speed to abnormal situations of the synchronous belt 12 by having at least a portion of the main body 3 in contact with the synchronous belt 12. When the synchronous belt 12 breaks or malfunctions, at least a portion of the main body 3 and the synchronous belt 12 can no longer maintain contact and disengage. The telescopic part 32 of the main body 3 then changes from a retracted state to an extended state, thereby pushing the support protrusion 31 into the support groove 41 of the support part 4, achieving interlocking and locking between the structures. This effectively prevents the free fall of the conveying structure 2 when the synchronous belt 12 breaks, protecting the equipment from damage and ensuring the safety of the operators. This design can detect the operating status of the synchronous belt 12 in real time. Once an abnormality is detected, the fall protection can be quickly activated. Compared with the braking methods in the prior art that require manual intervention or have a long reaction time, this significantly improves the response speed and safety of the hoist in emergency situations. At the same time, this design can implement fall protection immediately when the synchronous belt 12 breaks, reducing the probability of equipment damage caused by the breakage of the synchronous belt 12, reducing equipment downtime, and thus reducing maintenance and repair costs. Therefore, the synchronous belt hoist provided in this embodiment can solve the technical problem in the prior art where the conveying structure of the synchronous belt hoist will fall and be damaged when the synchronous belt breaks.

[0059] It should be noted that "at least part of the main body 3 is separated from the synchronous belt 12" corresponds to two situations. The first situation is that at least part of the main body 3 is separated from the synchronous belt 12 due to the breakage of the synchronous belt 12. The second situation is that at least part of the main body 3 is separated from the synchronous belt 12 due to the influence of external forces.

[0060] It should be noted that "the telescopic part 32 is in the retracted state" means that the telescopic end of the telescopic part 32 is retracted along the direction from the support part 4 to the main body part 3, and "the telescopic part 32 is in the extended state" means that the telescopic end of the telescopic part 32 is extended along the direction from the main body part 3 to the support part 4.

[0061] It should be noted that "the support protrusion 31 that is adapted to the support groove 41" means that at least a portion of the support protrusion 31 can be embedded in the support groove 41, and the outer surface of at least a portion of the support protrusion 31 is in contact with the inner groove surface of the support groove 41.

[0062] exist Figure 1 In this system, the synchronous belt structure 1 consists of a synchronous pulley 11 and a synchronous belt 12, with the belt 12 wound around the pulley 11 to form a transmission chain. The conveying structure 2 is driven by the synchronous belt 12, meaning that the movement of the belt 12 directly drives the movement of the conveying structure 2, thereby lifting or lowering the material. The synchronous belt elevator also includes a frame 8 and a guide rail 9. The frame 8, as the basic support structure of the elevator, is designed as a sturdy metal frame with an overall rectangular structure, possessing good rigidity and stability. The four corners and sides of the frame 8 are reinforced with ribs and fixing bolts to ensure structural stability. The top of the frame 8 is designed with a motor mounting platform for mounting the drive motor 5. The frame 8 contains multiple crossbeams and columns, forming a three-dimensional support platform for mounting the synchronous pulley 11, the conveying structure 2, the detection component 7, and the support part 4, among other related components. The guide rail 9 is mounted on the frame 8 and guides the conveying structure 2, guiding its vertical movement. The guide rail 9 is made of metal with a smooth surface and high straightness to ensure smooth and precise operation of the conveyor line. The guide rail 9 can be a single, long strip structure or composed of multiple sections, and can be customized according to the lifting height of the hoist. Figure 1 In the middle, the guide rail 9 extends along the height direction of the frame 8 and is parallel to the column of the frame 8.

[0063] Specifically, there are at least two synchronous belt structures 1, which are spaced apart along a preset direction. The main body 3 includes at least two abutting members 33 and at least two adjusting members 34, with the at least two abutting members 33 forming at least a portion of the main body 3. The at least two adjusting members 34, the at least two abutting members 33, and the at least two synchronous belt structures 1 are all arranged in a one-to-one correspondence. Each adjusting member 34 is located on the side of the corresponding abutting member 33 away from the corresponding synchronous belt 12 and is connected to the corresponding abutting member 33. The adjusting member 34 is movably arranged to adjust the contact pressure between the corresponding abutting member 33 and the corresponding synchronous belt 12. With this structural arrangement, since each abutting member 33 is in direct contact with the corresponding synchronous belt 12, the precise control of the adjusting member 34 can improve the accuracy and sensitivity of judging the breakage or abnormal state of the synchronous belt 12, enabling a rapid response even in minor abnormal situations and ensuring equipment safety. The movable design of the adjusting member 34 allows for precise adjustment of the contact pressure between the abutting member 33 and the synchronous belt 12. This design allows for adjustments to the accuracy and sensitivity of judging the breakage or abnormal state of the synchronous belt 12, while also preventing excessive pressure from affecting the normal operation of the synchronous belt 12. This enables it to adapt to synchronous belts of different thicknesses and types, reducing equipment maintenance costs and improving operating efficiency.

[0064] Specifically, the synchronous belt elevator also includes a drive motor 5, the drive end of which is drivenly connected to the synchronous belt pulley 11; the synchronous belt elevator also includes a sensing plate 35 and a proximity switch 6. The sensing plate 35 is disposed on the main body 3. The proximity switch 6 is disposed on the conveying structure 2, and the sensing end of the proximity switch 6 is located on the side of the main body 3 away from the support part 4; when at least one of the at least two abutting members 33 abuts against the corresponding synchronous belt 12, the sensing end is positioned opposite to the sensing plate 35, and the proximity switch 6 is in a de-energized state; when both at least two abutting members 33 are disengaged from the corresponding synchronous belt 12, the sensing end is misaligned with the sensing plate 35, and the proximity switch 6 is in an energized state. The drive motor 5 is signal-connected to the proximity switch 6; when the proximity switch 6 is in a de-energized state, the drive end of the drive motor 5 drives the synchronous belt pulley 11 to move; when the proximity switch 6 is in an energized state, the braking end of the drive motor 5 brakes the synchronous belt pulley 11, and / or, the drive end of the drive motor 5 stops running. With this structural arrangement, the contact status between at least two contact points 33 and the timing belt 12 can be monitored in real time by the proximity switch 6 and the sensing element 35. Once it is detected that all contact points 33 have disengaged from the timing belt 12 (i.e., at least two timing belts 12 have broken), the sensing element 35 moves along with the main body 3 under the action of the telescopic part 32, causing the proximity switch 6 to switch to the energized state. This triggers the braking end of the drive motor 5 to operate or the driving end to stop running, thus providing a rapid response in case of timing belt 12 breakage or abnormality, preventing material from falling and protecting equipment and personnel safety. This arrangement simplifies the operator's handling process in emergency situations, enabling emergency braking of the equipment without manual intervention, improving operational efficiency and personnel safety.

[0065] In this embodiment, the abutment 33 is pressed against the synchronous belt 12 by an external hexagonal threaded bolt (equivalent to the adjusting part 34), causing the movable block (equivalent to the main body 3) to disengage from the ratchet rack (equivalent to the support part 4), and simultaneously compressing the spring (equivalent to the telescopic part 32). At this time, the sensing plate 35 is opposite to the proximity switch 6, and the proximity switch 6 is in the de-energized state. In the event that both synchronous belts 12 break simultaneously, the compression spring pushes the movable block to engage with the ratchet rack, the proximity switch 6 is energized, and the variable frequency brake motor (equivalent to the drive motor 5) engages, thus preventing a fall.

[0066] Specifically, at least one of the two abutting members 33 is located on one side of the sensing plate 35, and the other is located on the other side of the sensing plate 35. With this structural arrangement, this layout design ensures that the sensing plate 35 can simultaneously monitor the status of the synchronization belts 12 on both sides, improving the comprehensiveness and accuracy of the detection.

[0067] Specifically, the sensing element 35 is disposed on the side of at least two abutment members 33 near the support portion 4. This ensures that when the abutment member 33 abuts or disengages from the timing belt 12, the sensing element 35 can quickly and effectively align or misalign with the sensing end of the proximity switch 6, realizing an instantaneous change in the state of the proximity switch 6, ensuring the timeliness and accuracy of braking of the drive motor 5, effectively avoiding damage to equipment and materials, and enhancing the safety and reliability of the system.

[0068] Specifically, the extending direction of the sensing element 35 is perpendicular to the extending direction of the abutment 33. This structural arrangement ensures that when the abutment 33 contacts or disengages from the synchronous belt 12, the sensing element 35 can quickly and effectively align or misalign with the sensing end of the proximity switch 6, achieving instantaneous changes in the state of the proximity switch 6. This guarantees the timeliness and accuracy of braking of the drive motor 5, effectively preventing damage to equipment and materials, and enhancing the safety and reliability of the system.

[0069] Specifically, the abutment member 33 has a disc structure. The disc-shaped abutment member 33 has a uniform surface contact area, enabling stable contact with the synchronous belt 12. Furthermore, the disc structure facilitates processing and installation, improving manufacturing efficiency and assembly accuracy, and positively impacting the overall performance and reliability of the hoist.

[0070] In this embodiment, the telescopic part 32 includes an elastic element 321 and an adjusting element 322. The elastic element 321 extends along the direction from the support part 4 to the main body 3. One side of the elastic element 321 is connected to the main body 3, and the other side overlaps or connects to the adjusting element 322. The adjusting element 322 is movably disposed in the direction close to or away from the main body 3. This structural arrangement realizes an adaptive telescopic mechanism. The elastic element 321 can quickly expand when the timing belt 12 breaks (i.e., when at least a part of the main body 3 is disengaged from the timing belt 12), providing power for the movement of the main body 3, so that the support protrusion 31 can quickly enter the support groove 41 for locking. This mechanism is not only responsive, but also, through the movable arrangement of the adjusting element 322, the expansion force and stroke of the telescopic part 32 can be adjusted according to the actual situation, enhancing the applicability and stability of the fall protection structure and reducing the risk of equipment damage due to the breakage of the timing belt 12.

[0071] Specifically, the elastic element 321 is a spring structure. This results in a simple structure, low cost, and convenient maintenance.

[0072] Specifically, the main body 3 includes a first main body 301 and a second main body 302 connected to each other. At least a portion of the second main body 302 is located on the side of the first main body 301 away from the support part 4. A first mounting cavity 3011 is provided on the first main body 301, and a second mounting cavity 3021 is provided on at least a portion of the second main body 302. The first mounting cavity 3011 and the second mounting cavity 3021 are opposite to each other and communicate with each other to form a mounting cavity. An elastic member 321 is disposed in the mounting cavity, and an adjusting member 322 is sleeved on at least a portion of the second main body 302. The adjusting member 322 is threadedly connected to at least a portion of the second main body 302. By adopting this structural arrangement, and designing the main body 3 as a combination of the first main body 301 and the second main body 302, this solution provides a compact and easy-to-maintain structure. The elastic member 321 is located in the mounting cavity formed by the first mounting cavity 3011 and the second mounting cavity 3021, which not only protects the elastic member 321 from the influence of the external environment and extends its service life, but also makes the entire structure more compact and saves installation space. The threaded connection between the adjusting part 322 and the second main body 302 makes adjusting the working stroke and locking torque of the telescopic part 32 simpler and more flexible, facilitating equipment debugging and maintenance, and improving the reliability and ease of operation of the system.

[0073] In this embodiment, the synchronous belt elevator also includes a drive motor 5, the drive end of which is drivenly connected to the synchronous belt pulley 11. The synchronous belt elevator also includes a detection component 7, which is mounted on the conveying structure 2. The detection component 7 includes a body 71, a limit switch 72, and a tensile elastic element 73. The limit switch 72 is rotatably mounted on the body 71. One end of the tensile elastic element 73 is fixed to the body 71, and the other end is connected to the limit switch 72. When the synchronous belt 12 is in normal operation, the end of the limit switch 72 away from the tensile elastic element 73 abuts against the synchronous belt 12, keeping the limit switch 72 stationary in its normally open position. When the synchronous belt 12 is broken, the tensile elastic element 73 retracts, causing the limit switch 72 to rotate by a predetermined angle to its closed position. In this configuration, the drive motor 5 is connected to the limit switch 72. When the limit switch 72 is in the normally open position, the drive end of the drive motor 5 drives the synchronous pulley 11. When the limit switch 72 is in the closed position, the brake end of the drive motor 5 brakes the synchronous pulley 11, and / or the drive end of the drive motor 5 stops running. With this structural arrangement, the combined use of the limit switch 72 and the tension elastic element 73 in the detection assembly 7 enables real-time monitoring of the operating status of the synchronous belt 12. When the synchronous belt 12 is operating normally (i.e., the synchronous belt 12 moves under the drive of the synchronous pulley 11), the limit switch 72 remains stationary in the normally open position due to its contact with the synchronous belt 12 and the combined action of the tension elastic element 73, without affecting the normal operation of the drive motor 5. However, when the synchronous belt 12 breaks, the limit switch 72 disengages from the synchronous belt 12. Under the retraction action of the tension elastic element 73, the limit switch 72 rotates to the closed position, immediately triggering the brake of the drive motor 5. This achieves real-time monitoring and response to the hoist's operating status, improving the system's safety and reliability. By monitoring the status of the timing belt 12 through the detection component 7, the drive motor 5 can be braked in time when a single timing belt 12 breaks, thus preventing the conveyor structure 2 from falling due to single-point failure. This enhances the overall stability of the elevator, and especially in industrial environments, it can effectively prevent accidents and protect the safety of goods and operators.

[0074] In this embodiment, the tension of the tension spring (equivalent to the tension elastic element 73) holds the lever of the limit switch 72 against the synchronous belt 12, at which point the limit switch 72 is in the normally open position. When the corresponding synchronous belt 12 breaks, the limit switch 72 is energized and closed under the tension of the tension spring, and the variable frequency brake motor engages, preventing equipment damage caused by the breakage of a single synchronous belt 12.

[0075] Specifically, the detection assembly 7 also includes a fixing member 74, which is disposed on the body 71 and protrudes from the outer surface of the body 71. One end of the tension elastic member 73 is fixed to the end of the fixing member 74 away from the body 71. Along the extension direction from the limit switch 72 to the body 71, the distance between the side of the limit switch 72 away from the body 71 and the body 71 is equal to the distance between the end of the fixing member 74 away from the body 71 and the body 71. This structural arrangement ensures proper balance and symmetry between the limit switch 72 and the tension elastic member 73, making the response of the detection assembly 7 more consistent and reliable under both normal and abnormal conditions of the synchronous belt 12. The protruding arrangement of the fixing member 74 not only provides a stable fixing point for the tension elastic member 73 but also makes the overall structure of the detection assembly 7 more compact, reducing the impact of external interference on detection accuracy. It also ensures that in the event of a breakage of the synchronous belt 12, the tension elastic member 73 can quickly stretch the limit switch 72, triggering the anti-fall mechanism in a timely manner and improving system safety.

[0076] In this embodiment, there are at least two synchronous belt structures 1, which are spaced apart along a preset direction; there are at least two detection components 7, which are arranged in a one-to-one correspondence with the at least two synchronous belt structures 1. With this structural arrangement, the synchronous belts 12 of the at least two synchronous belt structures 1 can be detected by the at least two detection components 7 respectively, ensuring that the breakage of any synchronous belt 12 can be detected and responded to in a timely manner, thereby better preventing equipment damage.

[0077] Specifically, the support part 4 is a rack structure extending along the extension direction of the synchronous belt 12. This rack structure provides a more stable support point, allowing the support protrusion 31 to quickly and accurately engage with the rack in the event of a breakage of the synchronous belt 12, reducing swaying and instability during support and improving the locking efficiency of the fall arrestor. The continuity and strength of the rack ensure that the hoist can stop quickly and safely even under high-speed operation or high-load conditions, effectively protecting the safety of the equipment and operators.

[0078] Specifically, the support groove 41 includes a first groove surface 411 and a second groove surface 412. The first groove surface 411 and the second groove surface 412 are set at a preset angle, which is greater than 0 degrees and less than 90 degrees. One side of the first groove surface 411 is located above the second groove surface 412, and the other side is connected to the second groove surface 412. The side of the second groove surface 412 away from the first groove surface 411 is located above the side of the second groove surface 412 closest to the first groove surface 411. This structural arrangement, with its special geometric design, allows the support protrusion 31 to transition and lock more naturally when engaging with the support groove 41, reducing impact and wear during the locking process and improving the smoothness and reliability of the locking. The preset angle design also ensures that the support protrusion 31 and the support groove 41 can engage quickly and effectively, enhancing the system's adaptability and robustness, and ensuring the safe stopping of the hoist even under complex working conditions.

[0079] As can be seen from the above description, the above embodiments of this utility model achieve the following technical effects: 1. This device can meet the protection function of the equipment under two working conditions (single synchronous belt breakage and two synchronous belts breakage at the same time); 2. The variable frequency brake motor is controlled by limit switches and proximity switches to improve the safety and reliability of fall protection; 3. This device occupies little installation space and has an aesthetically pleasing appearance.

[0080] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0081] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0082] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0083] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0084] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0085] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A synchronous belt hoist, characterized in that, include: A synchronous belt structure (1) and a conveying structure (2) are provided. The synchronous belt structure (1) includes a synchronous pulley (11) and a synchronous belt (12) wound around the synchronous pulley (11). The conveying structure (2) is driven to connect with the synchronous belt (12). The fall protection structure includes a main body (3) and a support (4). The support (4) is located on the side of the main body (3) away from the synchronous belt (12). The main body (3) is connected to the conveying structure (2). The support (4) is provided with a plurality of support grooves (41) spaced apart along the extension direction of the synchronous belt (12). The main body (3) is provided with a support protrusion (31) that matches any one of the plurality of support grooves (41). At least a portion of the main body (3) is used to abut against the timing belt (12); a telescopic portion (32) is provided on the main body (3), the telescopic portion (32) is located on the side of the main body (3) away from the support portion (4) and is telescopically provided along the extension direction from the support portion (4) to the main body (3); when at least a portion of the main body (3) abuts against the timing belt (12), the main body (3) and the support portion (4) are spaced apart from each other, and the telescopic portion (32) is in a retracted state; when at least a portion of the main body (3) is disengaged from the timing belt (12), the telescopic portion (32) is in an extended state to push the support protrusion (31) into one of the plurality of support grooves (41).

2. The synchronous belt hoist according to claim 1, characterized in that, The synchronous belt structure (1) comprises at least two, and the at least two synchronous belt structures (1) are spaced apart along a preset direction; the main body (3) includes: At least two abutting members (33) form at least a portion of the main body (3); At least two adjusting members (34), at least two adjusting members (34), at least two abutting members (33) and at least two synchronous belt structures (1) are all provided in a one-to-one correspondence, and each adjusting member (34) is located on the side of the corresponding abutting member (33) away from the corresponding synchronous belt (12) and is connected to the corresponding abutting member (33); The adjusting member (34) is movably provided to adjust the contact pressure between the corresponding abutment member (33) and the corresponding timing belt (12).

3. The synchronous belt hoist according to claim 2, characterized in that, The synchronous belt hoist also includes a drive motor (5), the drive end of which is drivenly connected to the synchronous belt pulley (11); the synchronous belt hoist also includes: A sensor sheet (35) is disposed on the main body (3); A proximity switch (6) is disposed on the conveying structure (2), the sensing end of the proximity switch (6) being located on the side of the main body (3) away from the support (4); when at least one of the at least two abutting members (33) abuts against the corresponding synchronous belt (12), the sensing end is positioned opposite to the sensing plate (35), and the proximity switch (6) is in a de-energized state; when both of the at least two abutting members (33) abut against the corresponding synchronous belt (12), the proximity switch (6) is in a de-energized state. PN291506GAOCE When the phase is disconnected, the sensing end is misaligned with the sensing plate (35), and the proximity switch (6) is in the energized state; The drive motor (5) is signal-connected to the proximity switch (6); when the proximity switch (6) is in the de-energized state, the drive end of the drive motor (5) drives the synchronous pulley (11) to move; when the proximity switch (6) is in the energized state, the brake end of the drive motor (5) brakes the synchronous pulley (11).

4. The synchronous belt hoist according to claim 3, characterized in that, At least one of the two abutments (33) is located on one side of the sensing sheet (35), and the other is located on the other side of the sensing sheet (35); and / or, The sensing element (35) is disposed on the side of the at least two abutting members (33) near the support portion (4); and / or, The extending direction of the sensing sheet (35) is perpendicular to the extending direction of the abutment (33).

5. The synchronous belt hoist according to claim 1, characterized in that, The telescopic part (32) includes: The elastic member (321) and the adjusting member (322) are provided. The elastic member (321) extends along the extension direction from the support portion (4) to the main body portion (3). One side of the elastic member (321) is connected to the main body portion (3), and the other side overlaps or connects to the adjusting member (322). The adjusting member (322) is movably provided in the direction close to or away from the main body portion (3).

6. The synchronous belt hoist according to claim 5, characterized in that, The main body (3) includes: A first main body portion (301) and a second main body portion (302) are interconnected, with at least a portion of the second main body portion (302) located on the side of the first main body portion (301) away from the support portion (4); a first mounting cavity (3011) is provided on the first main body portion (301), and a second mounting cavity (3021) is provided on at least a portion of the second main body portion (302). The first mounting cavity (3011) and the second mounting cavity (3021) are opposite to each other and connected to form a mounting cavity together. An elastic member (321) is disposed in the mounting cavity, and an adjusting member (322) is sleeved on at least a portion of the second main body portion (302). The adjusting member (322) is threadedly connected to at least a portion of the second main body portion (302).

7. The synchronous belt hoist according to claim 1, characterized in that, The synchronous belt hoist also includes a drive motor (5), the drive end of which is drivenly connected to the synchronous belt pulley (11); the synchronous belt hoist also includes: A detection component (7) is disposed on the conveying structure (2). The detection component (7) includes a body (71), a limit switch (72), and a tension elastic element (73). The limit switch (72) is rotatably disposed on the body (71). One end of the tension elastic element (73) is fixed on the body (71), and the other end is connected to the limit switch (72). When the synchronous belt (12) is in normal operation, the end of the limit switch (72) away from the tension elastic element (73) abuts against the synchronous belt (12), so that the limit switch (72) is stationary in the normally open position. When the synchronous belt (12) is in a broken state, the tension elastic element (73) retracts to drive the limit switch (72) to rotate by a predetermined angle to the closed position. Claims PN291506GAOCE The drive motor (5) is signal-connected to the limit switch (72). When the limit switch (72) is in the normally open position, the drive end of the drive motor (5) drives the synchronous pulley (11) to move. When the limit switch (72) is in the closed position, the brake end of the drive motor (5) brakes the synchronous pulley (11).

8. The synchronous belt hoist according to claim 7, characterized in that, The detection component (7) also includes: A fastener (74) is disposed on the body member (71) and protrudes from the outer surface of the body member (71), and one end of the tensile elastic member (73) is fixed to the end of the fastener (74) away from the body member (71); Wherein, along the extension direction from the limit switch (72) to the body (71), the distance between the side of the limit switch (72) away from the body (71) and the body (71) is equal to the distance between the end of the fixing member (74) away from the body (71) and the body (71).

9. The synchronous belt hoist according to claim 7, characterized in that, There are at least two synchronous belt structures (1), and the at least two synchronous belt structures (1) are arranged at intervals along a preset direction; there are at least two detection components (7), and the at least two detection components (7) are arranged in a one-to-one correspondence with the at least two synchronous belt structures (1).

10. The synchronous belt hoist according to claim 1, characterized in that, The support portion (4) is a rack structure extending along the extension direction of the timing belt (12); and / or, The support groove (41) includes a first groove surface (411) and a second groove surface (412). The first groove surface (411) and the second groove surface (412) are set at a preset angle, which is greater than 0 degrees and less than 90 degrees. One side of the first groove surface (411) is located above the second groove surface (412), and the other side is connected to the second groove surface (412). The side of the second groove surface (412) away from the first groove surface (411) is located above the side of the second groove surface (412) close to the first groove surface (411).

Images