Protective braking device for a traction machine and method for operating the same

Abstract

The application discloses a protection braking device of a traction machine and a running method thereof, and relates to the technical field of traction machine braking, which comprises a casing assembly and a braking clamp frame, the casing assembly comprises a first shell, a fastening arc plate and a transmission motor shaft, the top of the first shell is fixed with the fastening arc plate through spot welding, and positioning holes are uniformly arranged on one side of the fastening arc plate; the application passes hydraulic oil into the second shell through an oil inlet pipe, so that the piston located in the second shell pushes the rotating disc brake to abut against each other, thereby playing a braking role; the hydraulic oil in the whole second shell pushes the telescopic column to extend out, and the first rotating rod and the second rotating rod in the circular braking shell are rotated and push the first friction plate in the clamping arc plate to extend out to abut against the rotating second rotating shaft, thereby playing a braking role; the second friction plate on the whole piston and the first friction plate on the clamping arc plate play a braking role at the same time, so that the braking effect of the traction machine is better.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of traction machine braking, in particular to a protection braking device of a traction machine and a running method thereof. BACKGROUND

[0002] The elevator traction machine is the power equipment of the elevator, also known as the elevator main machine, and its function is to transport and transmit power to make the elevator run. It is composed of a motor, a brake, a coupling, a reduction box, a traction wheel, a rack, a guide wheel and an auxiliary turning handle, etc. The guide wheel is generally installed on the rack or the load-bearing beam under the rack, and the turning handle is fixed on the motor shaft or hung on the nearby wall at ordinary times and then sleeved on the motor shaft when in use.

[0003] Generally, when the elevator is in a stationary state, no current passes through the coils of the traction motor and the electromagnetic brake. At this time, there is no attractive force between the electromagnetic cores, and the brake block is clamped tightly under the action of the brake spring pressure, ensuring that the motor does not rotate. When the traction motor is powered to rotate, the coil in the brake electromagnet is simultaneously powered, the electromagnetic core is quickly magnetized and attracted, the brake arm is driven to make its brake spring act on the force, the brake block is opened, and the brake wheel is completely separated, so that the elevator can run. The brake block is clamped and braked on the brake wheel through power control, similar to hub brake operation, resulting in high temperature between the brake block and the brake wheel, which can easily cause damage to the brake wheel. At the same time, only a single brake block is driven by power, which has poor braking effect, and when the brake block is damaged, the entire elevator equipment needs to be closed for maintenance, which is not convenient for disassembly and replacement.

[0004] Therefore, we propose a protection braking device of a traction machine and a running method thereof. SUMMARY

[0005] The present application aims to provide a protection braking device of a traction machine and a running method thereof to solve the technical problems in the background art:

[0006] 1. The protection braking device of the traction machine is achieved by freely installing multiple sets of brake clamps on the fastening arc plate, which reduces the probability of problems occurring in the traction machine, and the entire brake clamp is easy to install and disassemble, avoiding the problem of affecting the operation of the elevator for a long time.

[0007] 2. The fifth transmission gear on the third shaft is driven to rotate by the tooth sleeve on the brake disc, and the disc brake in the circular brake shell is driven to rotate by the rotation of the third shaft, avoiding the problem of brake disc failure caused by direct action on the brake disc.

[0008] 3. Hydraulic oil is introduced into the second housing through the oil inlet pipe, so that the piston located in the second housing is pushed by the hydraulic oil to abut against the rotating disc brake disc. At the same time, the second rotating rod rotates and pushes the first friction plate in the locking arc plate to extend and abut against the rotating second rotating shaft to brake, thus avoiding the problem of poor braking effect of a single braking device.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A protective braking device for a traction machine includes a housing assembly and a brake bracket. The housing assembly includes a first housing, a fastening arc plate, and a drive motor shaft. The top of the first housing is fixed with the fastening arc plate by spot welding, and positioning holes are evenly opened on one side of the fastening arc plate. A bracket is fixed with the bottom side of the first housing by spot welding. The drive motor shaft is installed inside the first housing, and a first drive gear is sleeved and fixed at one end of the drive motor shaft.

[0011] One side of the fastening arc plate is evenly fixed with a brake bracket by bolts, and a circular brake housing is fixed inside the brake bracket by bolts. One side of the circular brake housing is movably connected to a third rotating shaft by a bearing, and one end of the third rotating shaft passes through one side of the circular brake housing and is movably connected to the inner wall of one side of the circular brake housing by a bearing. A disc brake disc is sleeved and fixed on the third rotating shaft inside the circular brake housing, and a fifth transmission gear is sleeved and fixed on the third rotating shaft outside the circular brake housing.

[0012] A second rotating shaft is movably connected to one side of the first housing via a bearing, and a traction sheave is sleeved and fixed on the second rotating shaft. A brake disc is sleeved and fixed on one side of the traction sheave and on the second rotating shaft, and a gear sleeve is sleeved and fixed on one side of the brake disc by spot welding. One side of the brake disc is fixed to one side of the traction sheave by spot welding. The gear sleeve meshes with a fifth transmission gear. Traction rings are symmetrically fixed to the top of the first housing by spot welding.

[0013] Furthermore, a deceleration assembly is installed inside the circular brake housing. The deceleration assembly includes a second housing, an oil inlet pipe, an oil outlet pipe, a piston, and a telescopic column. The second housing is bolted to the inner walls of both sides of the circular brake housing and located on both sides of the disc brake disc. A piston is symmetrically slidably connected to the opposite side of the second housing and located on both sides of the second housing. A first spring is fixed to one side of the second housing by spot welding through one side of the piston. One side of the first spring is fixedly connected to one side of the inner wall of the second housing by spot welding. A second friction plate is adhesively fixed to the side of the piston located outside the second housing. The top of the second housing is connected to the oil inlet pipe and the oil outlet pipe. Telescopic columns are symmetrically slidably connected to both sides of the second housing. One end of the telescopic column penetrates one side of the second housing and extends into the second housing.

[0014] Furthermore, a first rotating shaft is movably connected to the first housing via a bearing, and a second transmission gear and a third transmission gear are sleeved and fixed on the first rotating shaft. The second transmission gear is meshed with the first transmission gear. A fourth transmission gear is sleeved and fixed at one end of the second rotating shaft inside the first housing, and the fourth transmission gear is meshed with the third transmission gear.

[0015] Furthermore, one side of the circular brake housing is uniformly provided with arc holes, and a fixing rod is symmetrically fixed to the inner wall of the circular brake housing by spot welding. A partition is symmetrically fixed to the inner wall of the circular brake housing and on both sides of the disc brake disc by spot welding. A second spring is symmetrically installed on the inner wall of the circular brake housing. The end of the telescopic column located outside the second housing is rotatably connected to the first rotating rod through a bearing.

[0016] Furthermore, a sliding groove is provided on the first rotating rod, one end of the fixed rod is engaged with the sliding groove, and the fixed rod and the sliding groove are slidably connected. One end of the second spring is connected to one side of the first rotating rod. A snap-fit ​​arc plate is installed at the bottom of the circular brake housing, and a first friction plate is slidably connected within the snap-fit ​​arc plate. A second rotating rod is symmetrically rotatably connected to one side of the partition plate via a bearing, and one end of the second rotating rod is engaged with the first friction plate. One end of the second rotating rod is slidably connected to the first friction plate. One end of the first rotating rod is engaged with one side of the second rotating rod, and the first rotating rod and one side of the second rotating rod are slidably connected.

[0017] A method for operating a protective braking device for a traction machine, wherein the method for operating the protective braking device for the traction machine is as follows:

[0018] Installation of S1 brake protection device:

[0019] By comparing the bolt holes on the brake bracket with the positioning holes on the fastening arc plate, after the two bolt holes are aligned, rotate the traction sheave to see if the gear sleeve on the brake disc meshes with the fifth transmission gear on the third shaft. After both conditions are met, use bolts to fix the entire brake bracket to one side of the fastening arc plate. Since there are multiple sets of positioning holes on one side of the entire fastening arc plate, the staff can decide the number of brake brackets on the entire fastening arc plate according to the size of the elevator. After all the brake brackets are fixed on the first housing, connect the inlet and outlet pipes extending from the circular brake housing surface on the brake bracket to the pressurized hydraulic device. The entire external pressurized hydraulic device pressurizes the hydraulic oil into the second housing, and can also recover the hydraulic oil in the second housing. After the pipeline is connected, start the protection braking operation of the entire traction machine.

[0020] S2 shaft dual braking deceleration:

[0021] When the elevator starts braking, hydraulic oil is pressurized and introduced into the oil inlet pipe. The hydraulic oil entering the second housing pushes the pistons on both sides of the disc brake disc, so that the second friction plate on the piston contacts the disc brake disc, which inhibits the rotation of the disc brake disc. Since the entire disc brake disc is fixed on the third rotating shaft, the fifth transmission gear connected to one end of the entire third rotating shaft meshes with the gear sleeve on the brake disc, thereby reducing the rotation speed of the entire brake disc.

[0022] At the same time, the hydraulic oil will push the telescopic column to unfold on both sides of the second housing. The telescopic column will push the first rotating rod on the fixed rod to rotate, and cause the second rotating rod on the partition to rotate, pushing the first friction plate on the snap-on arc plate to contact the second rotating shaft inside the first housing, which can also play an auxiliary braking role.

[0023] The installation of the first and second springs is mainly to allow the hydraulic oil to push the first and second friction plates to indirectly contact the disc brake disc and the second shaft, thus preventing the two friction plates from wearing out severely.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. In this invention, the protective braking of the traction machine is achieved by freely installing multiple sets of brake brackets on the fastening arc plate. The overall system is more flexible and safer. At the same time, the entire brake bracket is easy to disassemble and assemble, which facilitates the maintenance of the components inside the circular brake housing and the replacement of the friction plates by the staff later.

[0026] 2. In this invention, the fifth transmission gear on the third shaft is driven to rotate by the gear sleeve on the brake disc, and the rotation of the third shaft drives the disc brake disc inside the circular brake housing to rotate. By braking the disc brake disc, the control of the entire brake disc is achieved, avoiding direct adjustment of the entire brake disc, which would damage the brake disc and affect the operation of the entire traction machine.

[0027] 3. In this invention, hydraulic oil is introduced into the second housing through the oil inlet pipe, so that the piston located in the second housing is pushed by the hydraulic oil to abut against the rotating disc brake, thereby achieving a braking effect. At the same time, the hydraulic oil in the entire second housing pushes the telescopic column to extend, and causes the first rotating rod and the second rotating rod in the circular brake housing to rotate and push the first friction plate in the locking arc plate to extend and abut against the rotating second rotating shaft for braking. The second friction plate on the entire piston and the first friction plate on the locking arc plate work together to achieve a braking effect, thereby improving the braking effect of the traction machine. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the protective braking device for the traction machine of the present invention;

[0029] Figure 2 This is a side view of the protective braking device of the traction machine according to the present invention;

[0030] Figure 3 This is a side cross-sectional view of the protective braking device for the traction machine of the present invention.

[0031] Figure 4 These are schematic diagrams of the brake bracket structure from the front and top views.

[0032] Figure 5 This is a schematic diagram of the connection structure between the circular brake housing and the second rotating shaft of the present invention;

[0033] Figure 6 This is a schematic diagram of the main cross-sectional structure of the circular brake housing of the present invention;

[0034] Figure 7 This is a side view cross-sectional structural diagram of the deceleration component of the present invention.

[0035] In the diagram: 1. Housing assembly; 101. First housing; 102. Fastening arc plate; 103. Positioning hole; 104. Bracket; 105. Drive motor shaft; 106. First drive gear; 2. First rotating shaft; 3. Second drive gear; 4. Third drive gear; 5. Fourth drive gear; 6. Second rotating shaft; 7. Brake disc; 8. Gear sleeve; 9. Traction sheave; 10. Traction ring; 11. Brake bracket; 12. Circular brake housing; 13. Third rotating shaft. 14. Shaft; 15. Disc brake disc; 16. Fifth transmission gear; 17. Arc hole; 18. Snap-fit ​​arc plate; 19. First friction plate; 10. Reduction assembly; 11. Second housing; 12. Oil inlet pipe; 13. Oil outlet pipe; 14. First spring; 15. Piston; 16. Second friction plate; 17. Telescopic column; 20. First rotating rod; 21. Fixed rod; 22. Slide groove; 23. Second spring; 24. Partition plate; 25. Second rotating rod. Detailed Implementation

[0036] 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.

[0037] Please see Figures 1-7 The present invention provides a technical solution:

[0038] Example 1:

[0039] like Figure 1As shown, the entire traction machine body consists of three parts: a support bracket 104 for supporting the traction machine, a gear set rotation power mechanism inside the traction machine, and a brake safety braking mechanism. The support bracket 104 adopts a double-support load-bearing structure, which has a balanced and reasonable force distribution, large load capacity, low vibration, and no overall deformation. At the same time, the gear set achieves perfect output of low speed, high torque, high performance, and high efficiency. Finally, the brake safety braking mechanism adopts a disc brake method, which has a large braking radius, large braking torque, safety and comfort, and convenient installation, debugging, and maintenance.

[0040] Regarding the braking safety mechanism, multiple sets of brake brackets 11 are installed on one side of the fastening arc plate 102 on the entire housing assembly 1, such as... Figures 4-7 As shown, the entire brake bracket 11 is fixed in the positioning hole 103 on the fastening arc plate 102 by bolts. The operator can assemble the brake bracket 11 according to the different power of the traction machine. For high-power traction machines, more brake brackets 11 can be installed. During installation, it should be noted that the fifth transmission gear 15 on the side of the circular brake housing 12 inside the entire brake bracket 11 should mesh with the gear sleeve 8 on the periphery of the brake disc 7. After the entire brake bracket 11 is installed, the transmission motor shaft 105 inside the entire first housing 101 can be started, so that the brake disc 7 on the side of the first housing 101 and the traction wheel 9 on the brake disc 7 start to rotate. When the brake disc 7 rotates, it will drive the fifth transmission gear 15 on the side of the circular brake housing 12 to rotate.

[0041] When the entire traction machine needs to be braked, the hydraulic device located on one side of the first housing 101 pressurizes hydraulic oil into the reduction assembly 19 inside the entire circular brake housing 12 through the oil inlet pipe 192. Figures 6-7 As shown, a disc brake disc 14 is installed inside the entire circular brake housing 12. The entire disc brake disc 14 is also mounted on the third rotating shaft 13. When the fifth transmission gear 15 on one side rotates, the disc brake disc 14 can rotate inside the circular brake housing 12. In order to facilitate the dissipation of heat generated during braking, holes are evenly opened on the disc brake disc 14. At the same time, arc holes 16 are also evenly opened on the outer walls of both sides of the circular brake housing 12 to facilitate the dissipation of heat on the disc brake disc 14 during braking.

[0042] A notch is provided at the bottom of the circular brake housing 12, and a snap-fit ​​arc plate 17 is installed within the notch. A first friction plate 18 is slidably connected within the snap-fit ​​arc plate 17. The first friction plate 18 is concave. After the entire brake caliper 11 is installed at the front end of the first housing 101, the first friction plate 18 on the snap-fit ​​arc plate 17 is about 20mm away from the second rotating shaft 6. When hydraulic oil in the entire oil inlet pipe 192 enters the second housing 191, it pushes the pistons 195 on both sides of the housing to move outward. Since the disc brake disc 14 is located between the two pistons 195, the extended pistons 195... One end of the second friction plate 196 begins to contact the outer wall of the disc brake disc 14, hindering the rotation of the entire disc brake disc 14. The entire external hydraulic device adopts an intermittent oil supply operation, so that the entire piston 195 and the disc brake disc 14 achieve point-contact braking, avoiding the entire second friction plate 196 from being in contact with the outer wall of the disc brake disc 14 for a long time, which would cause the surface temperature of the entire disc brake disc 14 to rise sharply and cause the second friction plate 196 to fail to brake. When the hydraulic oil pressure entering the second housing 191 is low, the first spring 194 will pull the piston 195 to disengage from the disc brake disc 14.

[0043] The hydraulic oil entering the entire second housing 191 will not only push the piston 195 to move, but also cause the telescopic column 197 to extend, such as Figure 6 As shown, when the entire telescopic column 197 extends, it drives the first rotating rod 20 on the fixed rod 21 to rotate. To enable the rotation of the first rotating rod 20, the entire fixed rod 21 is engaged in the sliding groove 22 on the first rotating rod 20, allowing the first rotating rod 20 to rotate on the fixed rod 21 while also sliding freely. After the first rotating rod 20 rotates, the second rotating rod 25, one end of which is connected to the partition plate 24, also begins to rotate. The connection between the second rotating rod 25 and the first rotating rod 20 is similar to the connection between the fixed rod 21 and the first rotating rod 20. The first rotating rod 20 can slide while rotating at one end. When the entire second rotating rod 25 rotates, the first friction plate 18, which is slidably connected to the second rotating rod 25, begins to move towards the engaging arc plate 17. The second rotating shaft 6 begins to move downwards and begin to engage with the rotating second rotating shaft 6. As the second rotating shaft 6 drives the brake disc 7 to rotate, the rotation speed of the traction wheel 9 will also slow down. Similarly, due to the fluctuation of the hydraulic oil pressure, and the second spring 23 connected to one side of the first rotating rod 20, when the steering force of the hydraulic oil pushing the telescopic column 197 to the first rotating rod 20 is less than the pulling force of the second spring 23 on the first rotating rod 20, the first rotating rod 20 pulls the second rotating rod 25 to rotate in the opposite direction, thereby pulling the first friction plate 18 in the locking arc plate 17 upwards and disengaging it from the second rotating shaft 6. The hydraulic oil can be discharged from the second housing 191 through the oil outlet pipe 193, so the hydraulic oil can be recycled.

[0044] Example 2:

[0045] likeFigure 3 As shown, after the transmission motor shaft 105 inside the entire first housing 101 starts to rotate, it drives the first transmission gear 106 at one end to rotate. At the same time, the entire first housing 101 also has a first rotating shaft 2 installed inside. The second transmission gear 3 and the third transmission gear 4 are sleeved and fixed on the entire first rotating shaft 2. Through the meshing connection between the first transmission gear 106 and the second transmission gear 3, the entire third transmission gear 4 can drive the fourth transmission gear 5 on the second rotating shaft 6 to rotate. One end of the entire fourth transmission gear 5 passes through the first housing 101 and is connected to the brake disc 7 and the traction wheel 9. Therefore, the entire first friction plate 18 brakes the second rotating shaft 6 and can effectively brake the entire traction wheel 9.

[0046] A bracket 104 is fixed to the bottom of the entire first housing 101 by spot welding. The entire bracket 104 adopts a double-support bearing structure, which is balanced and reasonable in terms of force, has a large load capacity, low vibration, and will not cause overall deformation. At the same time, traction rings 10 are symmetrically fixed to the top of the first housing 101 by spot welding, which facilitates the later handling and movement of the entire traction machine.

[0047] Working principle:

[0048] After the transmission motor shaft 105 inside the entire first housing 101 starts to rotate, it drives the first transmission gear 106 at one end to rotate. The first transmission gear 106 drives the third transmission gear 4 on the first rotating shaft 2 to rotate. The third transmission gear 4 drives the fourth transmission gear 5 on the second rotating shaft 6 to rotate, thereby driving the entire brake disc 7 and traction wheel 9 to rotate.

[0049] When the elevator starts braking, hydraulic oil is pressurized in the oil inlet pipe 192 by the external pressurization device. The hydraulic oil entering the second housing 191 pushes the pistons 195 on both sides of the disc brake disc 14, so that the second friction plate 196 on the piston 195 contacts the disc brake disc 14, which inhibits the rotation of the disc brake disc 14. Since the entire disc brake disc 14 is fixed on the third rotating shaft 13, the fifth transmission gear 15 connected to one end of the entire third rotating shaft 13 meshes with the gear sleeve 8 on the brake disc 7, thereby reducing the rotation speed of the entire brake disc 7.

[0050] At the same time, the hydraulic oil will push the telescopic column 197 to unfold on both sides of the second housing 191. The telescopic column 197 pushes the first rotating rod 20 on the fixed rod 21 to rotate, and causes the second rotating rod 25 on the partition 24 to rotate and push the first friction plate 18 on the snap-on arc plate 17 to contact the second rotating shaft 6 inside the first housing 101, which can also play an auxiliary braking role.

[0051] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, all of which should fall within the protection scope of the present invention. In the description of this specification, the reference to terms such as "an embodiment," "example," "specific example," etc., means that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. The preferred embodiments of the present invention disclosed above are only for the purpose of helping to illustrate the present invention. The preferred embodiments do not describe all details exhaustively, nor do they limit the invention to specific implementations. Obviously, 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 present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A protective braking device for a traction machine, comprising a housing assembly (1) and a brake bracket (11), characterized in that: The housing assembly (1) includes a first housing (101), a fastening arc plate (102), and a transmission motor shaft (105). The top of the first housing (101) is fixed with the fastening arc plate (102) by spot welding, and positioning holes (103) are evenly opened on one side of the fastening arc plate (102). A bracket (104) is fixed on one side of the bottom of the first housing (101) by spot welding. The transmission motor shaft (105) is installed inside the first housing (101), and a first transmission gear (106) is sleeved and fixed at one end of the transmission motor shaft (105). One side of the fastening arc plate (102) is evenly fixed with a brake bracket (11) by bolts, and a circular brake housing (12) is fixed with bolts inside the brake bracket (11). One side of the circular brake housing (12) is movably connected with a third rotating shaft (13) through a bearing, and one end of the third rotating shaft (13) passes through one side of the circular brake housing (12) and is movably connected to the inner wall of one side of the circular brake housing (12) through a bearing. A disc brake disc (14) is sleeved and fixed on the third rotating shaft (13) inside the circular brake housing (12), and a fifth transmission gear (15) is sleeved and fixed on the third rotating shaft (13) outside the circular brake housing (12). A second rotating shaft (6) is movably connected to one side of the first housing (101) via a bearing, and a traction wheel (9) is sleeved and fixed on the second rotating shaft (6). A brake disc (7) is sleeved and fixed on one side of the traction wheel (9) and on the second rotating shaft (6), and a gear sleeve (8) is sleeved and fixed on one side of the brake disc (7) by spot welding. One side of the brake disc (7) is fixed to one side of the traction wheel (9) by spot welding. The gear sleeve (8) is meshed with the fifth transmission gear (15). A traction ring (10) is symmetrically fixed to the top of the first housing (101) by spot welding.

2. The protective braking device for a traction machine according to claim 1, characterized in that: The circular brake housing (12) houses a reduction assembly (19), which includes a second housing (191), an oil inlet pipe (192), an oil outlet pipe (193), a piston (195), and a telescopic column (197). The second housing (191) is bolted to the inner walls of both sides of the circular brake housing (12) and located on both sides of the disc brake disc (14). The piston (195) is symmetrically slidably connected to the opposite side of the second housing (191) and the disc brake disc (14) on both sides of the second housing (191), and one side of the piston (195) penetrates one side of the second housing (191). A first spring (194) is fixed by spot welding. One side of the first spring (194) is fixedly connected to the inner wall of one side of the second housing (191) by spot welding. The piston (195) is fixed to the side outside the second housing (191) by adhesive bonding. The top of the second housing (191) is connected to the oil inlet pipe (192) and the oil outlet pipe (193). Telescopic columns (197) are symmetrically slidably connected on both sides of the second housing (191). One end of the telescopic column (197) passes through one side of the second housing (191) and extends into the second housing (191).

3. The protective braking device for a traction machine according to claim 1, characterized in that: A first rotating shaft (2) is movably connected to the first housing (101) via a bearing, and a second transmission gear (3) and a third transmission gear (4) are sleeved and fixed on the first rotating shaft (2). The second transmission gear (3) is meshed with the first transmission gear (106). A fourth transmission gear (5) is sleeved and fixed at one end of the second rotating shaft (6) located inside the first housing (101), and the fourth transmission gear (5) is meshed with the third transmission gear (4).

4. The protective braking device for a traction machine according to claim 2, characterized in that: The circular brake housing (12) has evenly spaced arc holes (16) on one side, and fixed rods (21) are symmetrically fixed to the inner wall of the circular brake housing (12) by spot welding. The inner wall of the circular brake housing (12) and the two sides of the disc brake disc (14) are symmetrically fixed to the partition (24) by spot welding. The inner wall of the circular brake housing (12) is symmetrically installed with second springs (23). The end of the telescopic column (197) located outside the second housing (191) is rotatably connected to the first rotating rod (20) by bearing.

5. A protective braking device for a traction machine according to claim 4, characterized in that: The first rotating rod (20) has a sliding groove (22), one end of the fixed rod (21) is engaged with the sliding groove (22), and the one end of the fixed rod (21) is slidably connected with the sliding groove (22). One end of the second spring (23) is connected to one side of the first rotating rod (20). The bottom of the circular brake housing (12) is equipped with a snap-fit ​​arc plate (17), and the first friction plate (18) is slidably connected inside the snap-fit ​​arc plate (17). One side of the partition plate (24) is symmetrically connected to the second rotating rod (25) through a bearing, and one end of the second rotating rod (25) is engaged with the first friction plate (18). One end of the second rotating rod (25) is slidably connected with the first friction plate (18). One end of the first rotating rod (20) is engaged with one side of the second rotating rod (25), and the one end of the first rotating rod (20) is slidably connected with one side of the second rotating rod (25).

6. A method for operating a protective braking device for a traction machine, characterized in that: The operation method of the protective braking device of the traction machine is as follows: Installation of S1 brake protection device: By comparing the bolt holes on the brake bracket (11) with the positioning holes (103) on the fastening arc plate (102), after the two bolt holes are aligned, rotate the traction sheave (9) to see if the gear sleeve (8) on the brake disc (7) meshes with the fifth transmission gear (15) on the third rotating shaft (13). After both conditions are met, use bolts to fix the entire brake bracket (11) to one side of the fastening arc plate (102). Since there are multiple sets of positioning holes (103) on one side of the entire fastening arc plate (102), the staff will determine the positioning holes based on the elevator quality. The size of the brake brackets (11) on the entire fastening arc plate (102) is determined by the user. After all the brake brackets (11) are fixed on the first housing (101), the inlet and outlet pipes extending from the surface of the circular brake shell (12) on the brake brackets (11) are connected to the pressurized hydraulic device. The entire external pressurized hydraulic device presses the hydraulic oil into the second housing (191) and can also recover the hydraulic oil in the second housing (191). After the pipeline is connected, the protection braking operation of the entire traction machine begins. S2 shaft dual braking deceleration: When the elevator starts braking, hydraulic oil is pressurized in the oil inlet pipe (192) and enters the second housing (191). The hydraulic oil pushes the pistons (195) on both sides of the disc brake disc (14), so that the second friction plate (196) on the piston (195) contacts the disc brake disc (14), which inhibits the rotation of the disc brake disc (14). Since the entire disc brake disc (14) is fixed on the third rotating shaft (13), the fifth transmission gear (15) connected to one end of the entire third rotating shaft (13) meshes with the gear sleeve (8) on the brake disc (7), thereby reducing the rotation speed of the entire brake disc (7). At the same time, the hydraulic oil will push the telescopic column (197) to unfold on both sides of the second housing (191). The telescopic column (197) pushes the first rotating rod (20) on the fixed rod (21) to rotate, and causes the second rotating rod (25) on the partition (24) to rotate and push the first friction plate (18) on the snap-fit ​​arc plate (17) to contact the second rotating shaft (6) inside the first housing (101), which can also play an auxiliary braking role. The installation of the first spring (194) and the second spring (23) is mainly to enable the hydraulic oil to push the first friction plate (18) and the second friction plate (196) to indirectly contact the disc brake disc (14) and the second rotating shaft (6), so as to prevent the two friction plates from being severely worn.

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