Transmission mechanism of an elevator door body

Abstract

The present disclosure relates to the technical field of lift door, and one embodiment of the present disclosure provides a transmission mechanism of a lift door body, which comprises a mounting plate arranged on the door body, the mounting plate having a plurality of clamping grooves arranged in the vertical direction; and rotating members arranged on the door body, each of the rotating members having a clamping protrusion arranged in the clamping groove, and after the clamping protrusion rotates, the door body is lifted by the clamping groove. Through the above technical solution, the technical problem of the prior art that the transmission mechanism of the lift door body is not stable and has high maintenance cost is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of lifting door technology, and more specifically, to a transmission mechanism for a lifting door body. Background Technology

[0002] Lifting doors are a type of industrial door used in industrial plants. They are widely used in factories due to their high sealing and safety performance. Traditional lifting door transmission mechanisms have various design forms, but all face some problems that urgently need to be solved.

[0003] Some traditional transmission mechanisms use chain or belt drives. While chain drives have a certain load-bearing capacity, chains are prone to elongation and loosening over long-term use, requiring regular adjustment and maintenance. Otherwise, transmission instability can occur, leading to problems such as skipped teeth or chain derailment, affecting the normal raising and lowering of the door and potentially posing safety hazards. Belt drives, on the other hand, are prone to wear and slippage, especially in humid or oily environments. The friction of the belt decreases significantly, resulting in reduced transmission efficiency and making it difficult to precisely control the door's raising and lowering position.

[0004] Some transmission mechanisms also use lead screw and nut drives. While lead screw and nut drives can achieve relatively precise linear motion, the lead screw is prone to bending and deformation under heavy loads, affecting transmission accuracy and service life. Moreover, lead screw and nut drives have a relatively complex structure, higher manufacturing costs, and are more difficult to install and debug.

[0005] In summary, the existing elevator door transmission mechanism has many shortcomings in terms of stability, reliability, and maintenance costs, and there is an urgent need for a new type of transmission mechanism to solve these problems. Utility Model Content

[0006] To overcome the above-mentioned defects, the embodiments of this disclosure provide a transmission mechanism for an elevator door, which solves the technical problems of insufficient stability and high maintenance costs of the transmission mechanism for elevator doors in the prior art.

[0007] According to one aspect, at least one embodiment of this disclosure provides a transmission mechanism for a lift door body, used to drive the door body to move up and down on the main body, comprising:

[0008] Mounting plate for mounting on the door body, the mounting plate having a plurality of slots spaced apart in the vertical direction;

[0009] Rotating components are rotatably mounted on the main body. Each rotating component has a snap-fit ​​protrusion, which is used to snap into the slot. After the snap-fit ​​protrusion rotates, it drives the door to rise and fall through the slot.

[0010] For example, in a transmission mechanism for an elevator door provided in at least one embodiment of this disclosure, the mounting plate is a rack and pinion, the rotating component is a gear, and the rotating component meshes with the mounting plate.

[0011] For example, in at least one embodiment of the transmission mechanism of an elevator door provided in this disclosure, the following further includes:

[0012] A driving element is provided on the main body;

[0013] A drive gear is disposed on the drive member, and the drive gear meshes with the rotating member.

[0014] For example, in the transmission mechanism of an elevator door provided in at least one embodiment of this disclosure,

[0015] The mounting plate has two plates, which are spaced apart on the door body. The rotating member and the driving gear are located between the two mounting plates. The rotating member meshes with one mounting plate, and the driving gear meshes with the other mounting plate.

[0016] For example, in at least one embodiment of the transmission mechanism of an elevator door provided in this disclosure, the following further includes:

[0017] There are several anti-deviation wheels, which are rotatably mounted on both sides of the door body. The anti-deviation wheels have annular gaps, which are used to engage with the main body.

[0018] For example, in at least one embodiment of the transmission mechanism of an elevator door provided in this disclosure, the following further includes:

[0019] Abutting blocks, comprising a plurality of such abutting blocks, are arranged at intervals along a vertical direction on the door body;

[0020] A fixed shaft is mounted on the main body.

[0021] The first rotating block is rotatably mounted on the fixed shaft. When the abutment block rises, it drives the first rotating block to rotate counterclockwise. When the abutment block falls, it drives the first rotating block to rotate clockwise.

[0022] A first torsion spring is sleeved on the fixed shaft, with one end on the fixed shaft and the other end on the first rotating block. The first torsion spring is used to provide the force for the first rotating block to return to its original position.

[0023] The second rotating block is rotatably mounted on the fixed shaft. After the first rotating block rotates clockwise, it drives the second rotating block to rotate synchronously. After the second rotating block rotates clockwise, it supports the abutment block and prevents the door from falling.

[0024] The second torsion spring is sleeved on the fixed shaft, with one end on the fixed shaft and the other end on the second rotating block. The second torsion spring is used to provide the force for the second rotating block to return to its original position.

[0025] For example, in a transmission mechanism for an elevator door provided in at least one embodiment of this disclosure, the abutment block is snapped onto the door body.

[0026] For example, in at least one embodiment of the transmission mechanism of an elevator door provided in this disclosure, the following further includes:

[0027] A plurality of snap-fit ​​blocks are provided on the main body. The plurality of snap-fit ​​blocks are arranged at intervals in the vertical direction, and a snap-fit ​​gap is formed between adjacent snap-fit ​​blocks. The abutment block is used to snap-fit ​​within the snap-fit ​​gap.

[0028] For example, in a transmission mechanism for an elevator door provided in at least one embodiment of this disclosure, the abutment block has a locking groove and further includes:

[0029] A limiting plate is used to slide laterally on the main body. After sliding, the limiting plate is used to slide out of or out of the snap-fit ​​groove.

[0030] The beneficial effects of the embodiments disclosed herein are as follows:

[0031] In this disclosure, the mounting plate is first fixed to the door body using bolts or welding to ensure that there is no relative movement between the mounting plate and the door body. Simultaneously, the rotating component is rotatably mounted on the main body via bearings and other components, ensuring that the rotating component can rotate freely. When it is necessary to drive the door body to rise or fall, an external power source drives the rotating component to rotate. The locking protrusions on the rotating component engage with the slots on the mounting plate. As the rotating component continues to rotate, the locking protrusions move within the slots, thereby driving the door body to rise or fall on the main body through the slots.

[0032] This transmission method effectively avoids common problems such as slippage and loosening in traditional transmission mechanisms, improving transmission stability and reducing maintenance costs. The engagement between the locking protrusion and the slot ensures that the rotation of the rotating parts is precisely converted into the lifting motion of the door, guaranteeing the accuracy of the door's position and enhancing the reliability and safety of the elevator door operation. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0034] Figure 1 This is a schematic diagram of the transmission mechanism of an elevator door in one embodiment of the present disclosure;

[0035] Figure 2 for Figure 1 Enlarged view of point A;

[0036] Figure 3 This is a schematic diagram of the transmission mechanism of an elevator door in one embodiment of the present disclosure;

[0037] Figure 4 for Figure 3 Enlarged view of point B;

[0038] Figure 5 This is a schematic diagram of an annular gap structure in one embodiment of the present disclosure;

[0039] Figure 6 This is a partial structural diagram of one embodiment of the present disclosure;

[0040] Figure 7 This is a schematic diagram of a partial explosion structure in one embodiment of the present disclosure.

[0041] In the diagram: 1. Door body, 2. Main body, 3. Mounting plate, 31. Slot, 4. Rotating component, 41. Snap-fit ​​protrusion, 5. Driving component, 6. Driving gear, 7. Anti-deviation wheel, 71. Annular gap, 8. Abutment block, 9. Fixed shaft, 10. First rotating block, 11. Second rotating block, 12. Snap-fit ​​block, 121. Snap-fit ​​gap, 81. Snap-fit ​​groove, 13. Limiting plate. Detailed Implementation

[0042] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0043] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0044] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0045] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0047] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0048] like Figures 1-2 As shown, a transmission mechanism for a lifting door body in one embodiment of the present disclosure is illustrated. The mechanism is used to drive the door body 1 to rise and fall on the main body 2. A mounting plate 3 is used to be mounted on the door body 1. The mounting plate 3 has a plurality of slots 31 arranged at intervals in the vertical direction. A rotating member 4 is used to be rotatably mounted on the main body 2. Each rotating member 4 has a snap-fit ​​protrusion 41. The snap-fit ​​protrusion 41 is used to snap into the slot 31. After the snap-fit ​​protrusion 41 rotates, it drives the door body 1 to rise and fall through the slot 31.

[0049] First, the mounting plate 3 is fixed to the door body 1 by bolts or welding to ensure that there is no relative movement between the mounting plate 3 and the door body 1. At the same time, the rotating component 4 is rotatably mounted on the main body 2 through bearings and other components to ensure that the rotating component 4 can rotate flexibly. When it is necessary to drive the door body 1 to rise or fall, the external power source drives the rotating component 4 to rotate. The locking protrusion 41 on the rotating component 4 engages into the locking groove 31 of the mounting plate 3. As the rotating component 4 continues to rotate, the locking protrusion 41 moves within the locking groove 31, thereby driving the door body 1 to rise or fall on the main body 2 through the locking groove 31.

[0050] This transmission method effectively avoids common problems such as slippage and loosening in traditional transmission mechanisms, improves transmission stability, and has low maintenance costs. The engagement between the snap-fit ​​protrusion 41 and the slot 31 ensures that the rotation of the rotating part 4 is accurately converted into the lifting motion of the door body 1, guaranteeing the accuracy of the lifting position of the door body 1 and improving the reliability and safety of the elevator door body 1 operation.

[0051] In some examples, the mounting plate 3 is a rack and pinion, and the rotating component 4 is a gear, which meshes with the mounting plate 3.

[0052] For example, such as Figure 2 As shown, the mounting plate 3, which acts as a rack, is installed on the door body 1, and the rotating component 4, which acts as a gear, is installed on the main body 2, so that the teeth of the rotating component 4 mesh with the teeth of the mounting plate 3. When the rotating component 4 is driven to rotate by power, due to the meshing relationship between the gear and the rack, the rotation of the rotating component 4 will drive the mounting plate 3 and the door body 1 connected to it to make a linear lifting and lowering motion.

[0053] The gear and rack transmission structure boasts high transmission accuracy and efficiency. It smoothly converts circular motion into linear motion, making the lifting and lowering of the door body 1 more stable and smooth. Moreover, the gear and rack structure is relatively simple, with low manufacturing and installation costs, and facilitates maintenance and component replacement, thus improving the economy and practicality of the entire transmission mechanism.

[0054] In some examples, the drive element 5 is used to be mounted on the main body 2; the drive gear 6 is mounted on the drive element 5 and meshes with the rotating element 4.

[0055] For example, such as Figure 2 As shown, the drive component 5 is first fixedly installed on the main body 2. The drive component 5 can be a power device such as a motor. Then, the drive gear 6 is installed on the output shaft of the drive component 5, ensuring that the drive gear 6 can rotate synchronously with the output shaft of the drive component 5. Then, the drive gear 6 meshes with the rotating component 4. When the drive component 5 is started, the drive gear 6 rotates accordingly, driving the rotating component 4 to rotate through the meshing relationship, thereby driving the door body 1 to rise and fall.

[0056] By adding drive component 5 and drive gear 6, an independent power source is provided for the transmission mechanism, making the lifting and lowering operation of the gate 1 more convenient and controllable. Drive component 5 can precisely control the rotation speed and direction according to actual needs, thereby realizing the lifting and lowering of the gate 1 and improving the automation level and performance of the lift.

[0057] In some examples, there are two mounting plates 3, which are spaced apart on the door body 1. The rotating member 4 and the drive gear 6 are located between the two mounting plates 3. The rotating member 4 meshes with one mounting plate 3, and the drive gear 6 meshes with the other mounting plate 3.

[0058] For example, such as Figure 2 As shown, two mounting plates 3 are installed at a certain distance on the door body 1. The rotating component 4 and the drive gear 6 are installed at a suitable position between the two mounting plates 3, so that the rotating component 4 meshes with one of the mounting plates 3 and the drive gear 6 meshes with the other mounting plate 3. When the drive component 5 drives the drive gear 6 to rotate, the drive gear 6 exerts a force on the door body 1 directly through the mounting plate 3 it meshes with, and on the other hand, it drives the rotating component 4 to rotate through its meshing with the rotating component 4. The rotating component 4 then further exerts a force on the door body 1 through the mounting plate 3 it meshes with, thus jointly driving the door body 1 to rise and fall.

[0059] This dual mounting plate 3 design makes the force exerted by the transmission mechanism on the door 1 more balanced, reducing the occurrence of tilting or jamming of the door 1 during lifting and lowering. The simultaneous participation of both mounting plates 3 in the transmission improves the stability and reliability of the transmission, enhances the smoothness of the door 1's lifting and lowering, and extends the service life of the door 1 and the transmission components.

[0060] In some examples, there are several anti-deviation wheels 7, which are respectively used to rotate on both sides of the door body 1. The anti-deviation wheels 7 have annular gaps 71, which are used to engage with the main body 2.

[0061] For example, such as Figure 5 As shown, several anti-deviation wheels 7 are installed on both sides of the door body 1. Each anti-deviation wheel 7 is rotatable through components such as shafts and bearings. The annular gap 71 of the anti-deviation wheel 7 is engaged with the main body 2, allowing the anti-deviation wheel 7 to roll on the main body 2 during the lifting and lowering of the door body 1. When the door body 1 tends to deviate, the anti-deviation wheel 7 will interact with the main body 2 to prevent the door body 1 from deviating.

[0062] The anti-deviation wheel 7 effectively prevents the door body 1 from shifting during lifting and lowering, reduces friction and collision between the door body 1 and the main body 2, and lowers the wear and tear on the components. This ensures the normal opening and closing of the door body 1, extends the service life of the door body 1 and the main body 2, and improves the safety and stability of the lift.

[0063] In some examples, there are several abutment blocks 8, which are arranged vertically at intervals on the door body 1; a fixed shaft 9 is arranged on the main body 2; a first rotating block 10 is rotatably arranged on the fixed shaft 9. When the abutment blocks 8 rise, they drive the first rotating block 10 to rotate counterclockwise; when the abutment blocks 8 fall, they drive the first rotating block 10 to rotate clockwise; a first torsion spring is sleeved on the fixed shaft 9, with one end on the fixed shaft 9 and the other end on the first rotating block 10. The first torsion spring is used to provide the force for the first rotating block 10 to return to its original position; a second rotating block 11 is rotatably arranged on the fixed shaft 9. When the first rotating block 10 rotates clockwise, it drives the second rotating block 11 to rotate synchronously. When the second rotating block 11 rotates clockwise, it supports the abutment blocks 8 and prevents the door body 1 from falling; a second torsion spring is sleeved on the fixed shaft 9, with one end on the fixed shaft 9 and the other end on the second rotating block 11. The second torsion spring is used to provide the force for the second rotating block 11 to return to its original position.

[0064] For example, such as Figures 3-4 As shown, several abutment blocks 8 are installed vertically at intervals on the door body 1. A fixed shaft 9 is installed on the main body 2. The first rotating block 10 and the second rotating block 11 are respectively rotatably mounted on the fixed shaft 9. A first torsion spring and a second torsion spring are sleeved on the fixed shaft 9. One end of the first torsion spring is fixed to the fixed shaft 9, and the other end is fixed to the first rotating block 10. One end of the second torsion spring is fixed to the fixed shaft 9, and the other end is fixed to the second rotating block 11. When the door body 1 rises, the abutment blocks 8 rise and drive the first rotating block 10 to rotate counterclockwise, compressing the first torsion spring. When the door body 1 descends at a constant speed, the abutment blocks 8 descend and drive the first rotating block 10 to rotate clockwise. At this time, the first rotating block 10 drives the second rotating block 11 to rotate synchronously, and the second torsion spring will also undergo corresponding deformation. After the second rotating block 11 rotates, the first rotating block 10 and the second rotating block 11 are located between two adjacent abutting blocks 8. As the first rotating block 10 and the abutting blocks 8 separate, the second rotating block 11 and the first rotating block 10 reset. Since the distance between the adjacent abutting blocks 8 is reasonable, the second rotating block 11 contacts the abutting block 8 after resetting. When the door 1 falls, the door 1 descends rapidly. The abutting block 8 contacts the first rotating block 10 first, causing the first rotating block 10 to rotate clockwise. The first rotating block 10 then drives the second rotating block 11 to rotate clockwise. When block 11 rotates clockwise, due to the limited reset time of the first and second torsion springs, the descent speed of the door 1 is too high, and the second torsion spring cannot reset in time. The abutment block 8 contacts the second rotating block 11, and the second rotating block 11 can only rotate 90°. After the abutment surface of the second rotating block 11 and the abutment block 8 rotates to a horizontal state, it cannot continue to rotate. Since the clockwise rotation angle of the second rotating block 11 is limited, after the second rotating block 11 cannot rotate, it supports the door 1 and prevents the door 1 from falling further, thus achieving the effect of preventing falling.

[0065] The combined structure of the abutment block 8, the first rotating block 10, the second rotating block 11, and the first and second torsion springs serves to buffer, limit, and prevent falls.

[0066] In some examples, the abutment block 8 is snapped onto the door body 1.

[0067] For example, such as Figure 6 As shown, since the reset time of the first and second torsion springs is limited, in order to ensure that the lifting and lowering effect of the door 1 and the anti-fall effect do not conflict, the lifting speed of the door 1 can be adjusted by adjusting the distance between the abutment blocks 8. A snap-fit ​​structure adapted to the abutment blocks 8 is pre-set on the door 1, and the abutment blocks 8 are installed on the door 1 by snap-fit. This snap-fit ​​method can be a combination of a slot 31 and a snap block, ensuring that the abutment blocks 8 can be firmly installed on the door 1 and will not easily fall off during the lifting and lowering of the door 1.

[0068] The abutment block 8 is snap-fitted onto the door body 1, facilitating its installation and removal. The spacing between adjacent abutment blocks 8 can also be adjusted, thereby regulating the lifting speed of the door body 1. When an abutment block 8 is damaged or requires maintenance, it can be quickly removed from the door body 1 for replacement or repair, improving maintenance efficiency and reducing costs. Furthermore, the snap-fit ​​design ensures the stability of the connection between the abutment block 8 and the door body 1, guaranteeing its proper functioning.

[0069] In some examples, a number of snap-fit ​​blocks 12 are also included for mounting on the main body 2. The number of snap-fit ​​blocks 12 are arranged at intervals in the vertical direction, and a snap-fit ​​gap 121 is formed between adjacent snap-fit ​​blocks 12. The abutment block 8 is used to snap-fit ​​within the snap-fit ​​gap 121.

[0070] For example, such as Figure 6 As shown, several snap-fit ​​blocks 12 are installed vertically at intervals on the main body 2, forming snap-fit ​​gaps 121 between adjacent snap-fit ​​blocks 12. After the abutment block 8 snaps into different snap-fit ​​gaps 121, the spacing between adjacent snap-fit ​​gaps 121 can be adjusted. The structure of the snap-fit ​​gap 121 facilitates the installation and removal of the abutment block 8. For removal, simply pull the abutment block 8 outwards; for installation, simply press the abutment block 8 inwards. The end of the abutment block 8 away from the snap-fit ​​block 12 has a groove. This groove facilitates both gripping the abutment block 8 and aligning it with the snap-fit ​​gap 21, reducing installation time. This facilitates the alignment of the abutment block 8 with the snap-fit ​​gap 21.

[0071] In some examples, the abutment block 8 has a snap-fit ​​groove 81 and also includes a limiting plate 13, which is laterally slidably disposed on the body 2 and slides out of or out of the snap-fit ​​groove 81 after sliding.

[0072] For example, such as Figure 7 As shown, to prevent the abutment block 8 from accidentally falling off, a slide rail or similar structure is provided on the main body 2, and the limiting plate 13 is installed on the slide rail, allowing it to slide on the main body 2. A snap-fit ​​groove 81 is designed on the abutment block 8. Under normal circumstances, the limiting plate 13 is snapped into the snap-fit ​​groove 81. Since the sliding direction of the limiting plate 13 is opposite to the disassembly direction of the abutment block 8, the limiting plate 13 limits the abutment block 8. When it is necessary to disassemble the abutment block 8, slide the limiting plate 13 to disengage it from the snap-fit ​​groove 81, and then pull out the abutment block 8. An elastic element can be designed between the limiting plate 13 and the main body 2. After the abutment block 8 is disassembled, the limiting plate 13 will automatically reset due to the action of the elastic element.

[0073] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A transmission mechanism for a lift door body, used to drive the door body (1) to rise and fall on a main body (2), characterized in that, include: Mounting plate (3) is used to be mounted on the door body (1). The mounting plate (3) has a plurality of slots (31) arranged at intervals along the vertical direction. Rotating component (4) is used to rotate on the main body (2). Each rotating component (4) has a snap-fit ​​protrusion (41). The snap-fit ​​protrusion (41) is used to snap into the slot (31). After the snap-fit ​​protrusion (41) rotates, it drives the door body (1) to rise and fall through the slot (31).

2. The transmission mechanism for a lift door body according to claim 1, characterized in that, The mounting plate (3) is a rack and pinion, and the rotating component (4) is a gear. The rotating component (4) meshes with the mounting plate (3).

3. The transmission mechanism for a lift door body according to claim 1, characterized in that, Also includes: A drive element (5) is provided on the main body (2); A drive gear (6) is disposed on the drive member (5), and the drive gear (6) meshes with the rotating member (4).

4. The transmission mechanism for a lift door body according to claim 3, characterized in that, There are two mounting plates (3), which are spaced apart on the door body (1). The rotating part (4) and the driving gear (6) are located between the two mounting plates (3). The rotating part (4) meshes with one of the mounting plates (3), and the driving gear (6) meshes with the other mounting plate (3).

5. The transmission mechanism for a lift door body according to claim 1, characterized in that, Also includes: Anti-deviation wheels (7) are provided in several units and are respectively used to rotate on both sides of the door body (1). The anti-deviation wheels (7) have annular gaps (71) for engaging with the main body (2).

6. The transmission mechanism for a lift door body according to claim 1, characterized in that, Also includes: Abutting blocks (8) are provided in a plurality of them, and the plurality of abutting blocks (8) are arranged at intervals along the vertical direction on the door body (1); A fixed shaft (9) is provided on the main body (2); The first rotating block (10) is rotatably mounted on the fixed shaft (9). After the abutment block (8) rises, it drives the first rotating block (10) to rotate counterclockwise. After the abutment block (8) falls, it drives the first rotating block (10) to rotate clockwise. The first torsion spring is sleeved on the fixed shaft (9), with one end set on the fixed shaft (9) and the other end set on the first rotating block (10). The first torsion spring is used to provide the force for the first rotating block (10) to reset. The second rotating block (11) is rotatably mounted on the fixed shaft (9). After the first rotating block (10) rotates clockwise, it drives the second rotating block (11) to rotate synchronously. After the second rotating block (11) rotates clockwise, it is used to support the abutment block (8) and to prevent the door (1) from falling. The second torsion spring is sleeved on the fixed shaft (9), with one end on the fixed shaft (9) and the other end on the second rotating block (11). The second torsion spring is used to provide the force for the second rotating block (11) to reset.

7. The transmission mechanism for a lift door body according to claim 6, characterized in that, The abutment block (8) is snapped onto the door body (1).

8. The transmission mechanism for a lift door body according to claim 6, characterized in that, Also includes: A plurality of snap-fit ​​blocks (12) are provided on the main body (2). The plurality of snap-fit ​​blocks (12) are arranged at intervals in the vertical direction, and a snap-fit ​​gap (121) is formed between adjacent snap-fit ​​blocks (12). The abutment block (8) is used to snap-fit ​​within the snap-fit ​​gap (121).

9. The transmission mechanism for an elevator door body according to claim 6, characterized in that, The abutment block (8) has a snap-fit ​​groove (81) and further includes: The limiting plate (13) is used to slide laterally on the main body (2). After the limiting plate (13) slides, it is used to slide out or slide out of the snap-fit ​​groove (81).

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