A speed reducer for a safety ladder winch

Abstract

The present invention relates to the technical field of transmission auxiliary devices, and specifically to a reducer for a safety ladder winch, comprising a reducer main body, a gear transmission box, a driving motor, a sealing door, a transmission installation assembly and a transmission auxiliary mechanism; on the one hand, the sealing door is installed and fixed by means of the arranged transmission installation assembly, and on the basis of ensuring its stable connection, its subsequent disassembly is also very convenient, which is convenient for maintaining the transmission work of the gear transmission box and ensuring the normal operation of its transmission work; on the other hand, by arranging a transmission auxiliary mechanism on the sealing door, that is, arranging the coordinated use of a circulation pipe, an oil storage cylinder and a control auxiliary assembly, the filling work of the transmission lubricating oil can be regulated to avoid wasting the lubricating oil as much as possible, which has a positive benefit effect on the transmission operation of the reducer; the present invention can better meet the actual use requirements of the reducer transmission.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission auxiliary devices, and particularly to a speed reducer for a safety ladder winch. Background Art

[0002] A patent document with the publication number of CN221116792U discloses a two-speed ratio speed reducer for a mine hoist winch. It is proposed that in the prior art, the speed reducer often operates continuously for 24 hours in the coal mine transportation field, and it is often necessary to add lubricating grease to the gears. However, for the existing equipment, adding lubricating oil requires removing the entire cover plate of the speed reducer, which is extremely inconvenient and delays the production progress. Its solution includes a speed reducer main body. A gear seat is arranged on one side surface of the speed reducer main body. A gear is arranged on one side surface of the gear seat located on the inner ring surface of the speed reducer main body. A connection port is arranged on one side surface of the speed reducer main body. An air pump is arranged on one side surface of the speed reducer main body close to the connection port. An air inlet is arranged on the side surface of the air pump far from the speed reducer main body. A control button is arranged on the side surface of the air pump close to the air inlet. A fixing seat is arranged on the side surface of the air pump close to the speed reducer main body. An air outlet is arranged on the side surface of the air pump far from the air inlet. A vacuum chamber is arranged on one side surface of the speed reducer main body close to the air outlet. An oil injection pipe is arranged on one side surface of the vacuum chamber. A pipe sleeve is arranged on one side surface of the oil injection port. An oil outlet is arranged on the side surface of the oil injection pipe far from the vacuum chamber. A positioning plate is arranged on one side surface of the inner ring surface of the speed reducer main body close to the oil outlet. A positioning seat is arranged on one side surface of the positioning plate.

[0003] Generally, a corresponding inspection door is arranged on the gear transmission box of the existing winch speed reducer to facilitate subsequent maintenance work. In the above solution, a lubricating grease filling structure is arranged at the inspection door position to meet the continuous transmission work requirements. The lubricating grease is placed in the vacuum chamber inside the gear transmission box body, which brings inconvenience to the subsequent replenishment work of the lubricating grease. It is necessary to first remove the inspection door and then replenish it, and the operation is troublesome. Moreover, the filling work of the lubricating grease is continuous. When the lubricating grease is added sufficiently to the transmission rod gear set, it will continue to be filled, resulting in waste. The transmission device in the existing winch speed reducer lacks a suitable transmission auxiliary mechanism to meet its work requirements and ensure economic benefits.

[0004] Therefore, the present invention proposes a speed reducer for a safety ladder winch to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a speed reducer for a safety ladder winch to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: a speed reducer for a safety ladder winch, comprising a speed reducer main body, a gear transmission box body, a driving motor, a sealing door, a transmission installation component and a transmission auxiliary mechanism; a gear transmission box body is arranged on the speed reducer main body, a driving motor is connected and arranged on one side of the gear transmission box body, a maintenance opening is arranged at the top of the gear transmission box body, the maintenance opening and the sealing door are fixedly connected through the transmission installation component, and the sealing door is connected and arranged with the transmission auxiliary mechanism.

[0007] Preferably, the transmission installation component includes installation card slots, fixed frames, bearing blocks, connection slots, connection springs, installation card plates, pull buttons, auxiliary circular grooves, threaded holes, fastening threaded columns, handles, and rotation auxiliary plates; the installation card slots are symmetrically arranged on both sides of the sealing door, the fixed frames are symmetrically and fixedly arranged on both sides of the maintenance opening, and bearing blocks are arranged in the fixed frames, a connection slot is penetrated through the bearing blocks, and connection springs are symmetrically and fixedly arranged at the upper and lower ends of the bearing blocks, and the other ends of the connection springs are fixedly arranged on the inner side walls of the fixed frames, the installation card plates are adaptively inserted into the connection slots, and a pull button is fixedly arranged at one end of the installation card plate, the auxiliary circular groove is arranged on the upper end surface of the bearing block, the threaded hole is penetrated through the top end of the fixed frame, the fastening threaded column is threadedly connected with the threaded hole in an adaptive manner, and a handle is fixedly arranged at one end of the fastening threaded column, and rotation auxiliary plates are equidistantly fixedly arranged on the outer side wall of the handle.

[0008] Preferably, the connection slots in the bearing blocks and the installation card slots are arranged in corresponding positions and have the same number of sets; one installation card plate is inserted into one of the bearing blocks, the installation card plates and the installation card slots are arranged in corresponding positions and have the same number of sets; and one end of the installation card plate is adaptively clamped with the installation card slot.

[0009] Preferably, the fastening threaded columns and the auxiliary circular grooves are arranged in corresponding positions and have the same number of sets, and one end of the fastening threaded column is adaptively inserted into the auxiliary circular groove.

[0010] Preferably, the transmission auxiliary mechanism includes a circulation pipe, an oil distribution box, oil dripping ports, a connecting bottom pipe, an oil storage cylinder, a sealing cover and a regulation auxiliary component; the circulation pipe is penetrated through the sealing door, and an oil distribution box is communicated and arranged at the bottom end of the circulation pipe, the oil dripping ports are equidistantly arranged at the bottom end of the oil distribution box, the circulation pipe and the connecting bottom pipe are connected and arranged through the regulation auxiliary component, the connecting bottom pipe is arranged at the bottom end of the oil storage cylinder, and a sealing cover is arranged on the oil storage cylinder.

[0011] Preferably, the regulation auxiliary component includes a first connection box body, a second connection box body, a docking convex edge, a connection screw, a rotation control motor, a bearing column body, a loading groove, a positioning thread groove, a loading side plate, an oil guiding side strip, a mounting hole, a loading through groove, a fitting groove body, a fitting plate, a support column, an auxiliary spring, a movable head, and a spherical auxiliary surface; the first connection box body is communicatively arranged at the top end of the flow pipe, the second connection box body is communicatively arranged at the bottom end of the connection bottom pipe, the docking convex edges are symmetrically and fixedly arranged on the box mouth sides of the second connection box body and the first connection box body, and the docking convex edges of the two are connected by connection screws. The rotation control motor is arranged at one end of the first connection box body, the rotation control motor is connected to a connection insertion shaft, and one end of the connection insertion shaft is connected to the bearing column body. The outer side wall of the bearing column body is equidistantly provided with loading grooves, the positioning thread grooves are symmetrically arranged in the loading grooves, the loading side plates are adaptively placed in the loading grooves, and oil guiding side strips are arranged on the loading side plates. Mounting holes are arranged on the loading side plates, and the loading side plates are fixed by screws. The oil guiding side strips are equidistantly provided with loading through grooves, and one end of the loading through groove extends into the loading side plates. The inner side wall of the loading side plate is provided with a fitting groove body, the fitting groove body is adaptively clamped with the fitting plate, support columns are equidistantly and fixedly arranged on the fitting plate, one end of the support column is fixedly provided with an auxiliary spring, the other end of the auxiliary spring is fixedly provided with one end of the movable head, and the end surface of the other end of the movable head is set as a spherical auxiliary surface.

[0012] Preferably, the second connection box body and the first connection box body are arranged in corresponding positions and have the same number of sets, and the two are docked to form a containing cavity, and the shape of the containing cavity is a cylindrical cavity.

[0013] Preferably, the fitting groove body is communicatively arranged with the loading through groove, and the oil guiding side strip and the loading groove are arranged in corresponding positions and have the same number of sets.

[0014] Preferably, the movable head and the support column are arranged in corresponding positions and have the same number of sets, and both the movable head and the support column are placed in the loading through groove.

[0015] Preferably, the loading through groove is set as a cylindrical groove, and the loading through grooves are equidistantly arranged in a straight line in the oil guiding side strip.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The speed reducer drive equipment designed by the present invention, on the one hand, installs and fixes the sealing door through the provided drive installation component. On the basis of ensuring its stable connection, its subsequent disassembly is also very convenient, facilitating the maintenance of the drive work of the gear drive box and ensuring the normal operation of its drive work; on the other hand, by setting a drive auxiliary mechanism on the sealing door, that is, the coordinated use of a circulation pipe, an oil storage cylinder and a regulation auxiliary component, the filling work of the drive lubricating oil can be regulated, minimizing the waste of lubricating oil and having a positive beneficial impact on the drive operation work of the speed reducer; the present invention can better meet the actual use requirements of the speed reducer drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural connection diagram of the speed reducer equipment for the safety ladder winch of the present invention;

[0019] Figure 2 For the present invention Figure 1 is a partially enlarged schematic structural connection diagram;

[0020] Figure 3 is a top view of the structural connection between the sealing door and the drive auxiliary mechanism of the present invention;

[0021] Figure 4 is a bottom view of the structural connection between the sealing door and the drive auxiliary mechanism of the present invention;

[0022] Figure 5 is a schematic structural connection diagram of the drive installation component of the present invention;

[0023] Figure 6 For the present invention Figure 5 is a partially enlarged schematic structural connection diagram;

[0024] Figure 7 is a top view of the structural connection between the circulation pipe, the connecting bottom pipe and the regulation auxiliary component of the present invention;

[0025] Figure 8 For the present invention Figure 7 is a partially enlarged schematic structural connection diagram;

[0026] Figure 9 is a bottom view of the structural connection between the circulation pipe, the connecting bottom pipe and the regulation auxiliary component of the present invention;

[0027] Figure 10 is a top view of the partial structural connection of the regulation auxiliary component of the present invention;

[0028] Figure 11 is a bottom view of the partial structural connection of the regulation auxiliary component of the present invention;

[0029] Figure 12 For the present invention Figure 11 is a partially enlarged schematic structural connection diagram.

[0030] In the figure: the main body of the speed reducer 1, the gear transmission box body 2, the driving motor 3, the inspection port 4, the sealing door 5, the installation slot 601 of the transmission installation component, the fixing frame 602, the bearing block 603, the connecting slot 604, the connecting spring 605, the installation card plate 606, the pull buckle 607, the auxiliary circular groove 608, the threaded hole 609, the fastening threaded column 610, the handle 611, the rotating auxiliary plate 612, the circulation pipe 701, the oil distribution box 702, the oil dripping port 703, the connecting bottom pipe 704, the oil storage cylinder 705, the sealing cover 706, the first connecting box body 801, the second connecting box body 802, the docking convex edge 803, the connecting screw 804, the rotation control motor 805, the bearing column body 806, the loading slot 807, the positioning threaded groove 808, the loading side plate 809, the oil guiding side strip 810, the installation hole 811, the loading through slot 812, the fitting groove body 813, the fitting plate 814, the support column 815, the auxiliary spring 816, the movable head 817, the spherical auxiliary surface 818. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. For the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1: Please refer to Figures 1 - 12 , a speed reducer for a safety ladder winch, including the main body of the speed reducer 1, the gear transmission box body 2, the driving motor 3, the sealing door 5, the transmission installation component and the transmission auxiliary mechanism; the gear transmission box body 2 is arranged on the main body of the speed reducer 1, one side of the gear transmission box body 2 is connected with the driving motor 3, the inspection port 4 is arranged at the top of the gear transmission box body 2, the inspection port 4 and the sealing door 5 are fixedly connected through the transmission installation component, and the sealing door 5 is connected with the transmission auxiliary mechanism; the designed speed reducer transmission equipment of the present invention, on the one hand, installs and fixes the sealing door 5 through the arranged transmission installation component. On the basis of ensuring its firm connection, its subsequent disassembly is also very convenient, which is convenient for maintaining the transmission work of the gear transmission box body 2 and ensuring the normal operation of its transmission work; on the other hand, by arranging the transmission auxiliary mechanism on the sealing door 5, that is, the coordinated use of the circulation pipe 701, the oil storage cylinder 705 and the regulation auxiliary component, the filling work of the transmission lubricating oil can be regulated, and the waste of lubricating oil can be avoided as much as possible, which has a positive beneficial effect on the transmission operation work of the speed reducer.

[0033] Embodiment 2: On the basis of Embodiment 1, please refer to Figures 2 - 6, the transmission installation component here includes an installation card slot 601, a fixing frame 602, a bearing block 603, a connection slot 604, a connection spring 605, an installation card plate 606, a pull buckle 607, an auxiliary circular groove 608, a threaded hole 609, a fastening threaded column 610, a handle 611, and a rotation auxiliary plate 612; the installation card slots 601 are symmetrically arranged on both sides of the sealing door 5, the fixing frames 602 are symmetrically and fixedly arranged on both sides of the maintenance opening 4, and a bearing block 603 is arranged in the fixing frame 602. A connection slot 604 is penetrated through the bearing block 603, and connection springs 605 are symmetrically and fixedly arranged at the upper and lower ends of the bearing block 603. The other ends of the connection springs 605 are fixedly arranged on the inner side wall of the fixing frame 602. The installation card plate 606 is adaptively inserted into the connection slot 604, and a pull buckle 607 is fixedly arranged at one end of the installation card plate 606. The auxiliary circular groove 608 is arranged on the upper end surface of the bearing block 603, the threaded hole 609 is penetrated through the top of the fixing frame 602, the fastening threaded column 610 is threadedly connected with the threaded hole 609 in an adaptive manner, and a handle 611 is fixedly arranged at one end of the fastening threaded column 610. Rotation auxiliary plates 612 are equidistantly and fixedly arranged on the outer side wall of the handle 611; the connection slot 604 in the bearing block 603 here is arranged corresponding to the installation card slot 601 in terms of position and has the same number of sets; one installation card plate 606 is inserted into one bearing block 603, and the installation card plate 606 is arranged corresponding to the installation card slot 601 in terms of position and has the same number of sets; and one end of the installation card plate 606 is adaptively clamped with the installation card slot 601; the fastening threaded column 610 here is arranged corresponding to the auxiliary circular groove 608 in terms of position and has the same number of sets, and one end of the fastening threaded column 610 is adaptively inserted into the auxiliary circular groove 608.

[0034] In this embodiment, for the installation and fixation work of the sealing door 5, the sealing door 5 is blocked at the position of the maintenance opening 4. At the same time, the installation card slots 601 on both sides of the sealing door 5 are aligned with the connection slots 604 in the bearing blocks 603. Then, the installation card plate 606 is inserted from the connection slot 604 and the end of the installation card plate 606 is stuck in the installation card slot 601. Finally, the bearing block 603 is squeezed by the fastening threaded column 610, and the fastening threaded column 610 is tightened. In this process, by squeezing the bearing block 603, the installation card plate 606 also has a downward pressing effect on the sealing door 5, ensuring the installation stability of the sealing door 5; for the subsequent disassembly of the sealing door 5, first loosen the fastening threaded column 610, and then pull out the installation card plate 606 through the pull buckle 607. The operation is simple. Here, a handle 611 is arranged at the end of the fastening threaded column 610 and rotation auxiliary plates 612 are arranged on the outer side wall of the handle 611. The function is to facilitate the loosening and tightening of the fastening threaded column 610, and it can be realized without the help of auxiliary tools, and the operation is convenient.

[0035] Embodiment 3: On the basis of Embodiment 2, please refer toFigures 2 - 4 and Figures 7 - 12 , where the transmission auxiliary mechanism includes a circulation pipe 701, an oil distribution box 702, an oil dripping port 703, a connecting bottom pipe 704, an oil storage cylinder 705, a sealing cover 706 and a regulation auxiliary component; the circulation pipe 701 is disposed through the sealing door 5, and the bottom end of the circulation pipe 701 is communicated with the oil distribution box 702. The bottom end of the oil distribution box 702 is equidistantly provided with oil dripping ports 703. The circulation pipe 701 and the connecting bottom pipe 704 are connected through the regulation auxiliary component. The connecting bottom pipe 704 is disposed at the bottom end of the oil storage cylinder 705, and the oil storage cylinder 705 is provided with a sealing cover 706.

[0036] The regulation auxiliary component here includes a first connection box body 801, a second connection box body 802, a docking convex edge 803, a connection screw 804, a rotation control motor 805, a bearing column body 806, a loading groove 807, a positioning thread groove 808, a loading side plate 809, an oil guiding side strip 810, a mounting hole 811, a loading through groove 812, a fitting groove body 813, a fitting plate 814, a support column 815, an auxiliary spring 816, a movable head 817, and a spherical auxiliary surface 818; the first connection box body 801 is communicated and disposed at the top end of the circulation pipe 701, the second connection box body 802 is communicated and disposed at the bottom end of the connecting bottom pipe 704. The docking convex edges 803 are symmetrically and fixedly disposed on the box mouth side of the second connection box body 802 and the first connection box body 801, and the docking convex edges 803 of the two are connected by the connection screw 804. The rotation control motor 805 is disposed at one end of the first connection box body 801. The rotation control motor 805 is connected with a connection insertion shaft, and one end of the connection insertion shaft is connected with the bearing column body 806. The outer side wall of the bearing column body 806 is equidistantly provided with loading grooves 807. The positioning thread grooves 808 are symmetrically disposed in the loading grooves 807. The loading side plate 809 is adaptively placed in the loading grooves 807, and the oil guiding side strip 810 is disposed on the loading side plate 809. The mounting hole 811 is disposed on the loading side plate 809, and the loading side plate 809 is fixed by screws. The loading through grooves 812 are equidistantly disposed in the oil guiding side strip 810, and one end of the loading through groove 812 extends into the loading side plate 809. The fitting groove body 813 is disposed on the inner side wall of the loading side plate 809. The fitting groove body 813 is adaptively clamped with the fitting plate 814. The support columns 815 are equidistantly and fixedly disposed on the fitting plate 814. One end of the support column 815 is fixedly provided with the auxiliary spring 816, and the other end of the auxiliary spring 816 is fixedly provided with one end of the movable head 817. The end surface of the other end of the movable head 817 is set as the spherical auxiliary surface 818.

[0037] When adding lubricating oil to the gear transmission housing 2, the oil in the oil storage cylinder 705 flows through the connecting bottom pipe 704 and the circulation pipe 701, and finally flows out from the oil dripping port 703 at the bottom end of the oil distribution box 702 and drips onto the gear transmission group; a control and auxiliary assembly is provided at the connection position between the connecting bottom pipe 704 and the circulation pipe 701, which can intermittently add, regularly add or temporarily close the transmission lubricating oil, and try to avoid the waste of lubricating oil caused by continuous filling work. Here, the second connection box body 802 and the first connection box body 801 are arranged in corresponding positions and have the same number of sets, and the two are butted to form a receiving cavity, and the shape of the receiving cavity is a cylindrical cavity; here, the fitting groove body 813 is communicated with the loading through groove 812, and the oil guiding side strip 810 and the loading groove 807 are arranged in corresponding positions and have the same number of sets; here, the movable head 817 and the support column 815 are arranged in corresponding positions and have the same number of sets, and both the movable head 817 and the support column 815 are placed in the loading through groove 812; here, the loading through groove 812 is arranged as a cylindrical groove, and the loading through groove 812 is arranged in a straight line at equal intervals in the oil guiding side strip 810; the oil guiding side strip 810 is arranged at equal intervals on the side wall of the bearing column body 806, and a transfer space is formed between the adjacent oil guiding side strips 810, that is, the oil flowing down from the oil storage cylinder 705 drives the rotation of the bearing column body 806 through the rotation control motor 805 to transfer the oil into the circulation pipe 701, and finally enters the gear transmission housing 2. If the bearing column body 806 stops rotating, the oil delivery work can be stopped; the purpose of arranging the support column 815, the auxiliary spring 816 and the movable head 817 in the oil guiding side strip 810 is that when the connection position between the circulation pipe 701 and the first connection box body 801 is filled with oil and the oil dripping from the oil dripping port 703 at the bottom end of the oil distribution box 702 is slow, when the movable head 817 passes through the pipe orifice position of the circulation pipe 701, it extends outwards under the pushing action of the auxiliary spring 816, and has a pushing action on the oil at the pipe orifice position of the circulation pipe 701, which is convenient for the oil to flow down from the oil dripping port 703.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A speed reducer for a safety ladder winch, characterized in that: The invention comprises a reducer body (1), a gear transmission housing (2), a drive motor (3), a sealing door (5), a transmission installation assembly and a transmission auxiliary mechanism; the reducer body (1) is provided with a gear transmission housing (2), one side of the gear transmission housing (2) is connected to the drive motor (3), the top of the gear transmission housing (2) is provided with an inspection port (4), the inspection port (4) is fixedly connected to the sealing door (5) via the transmission installation assembly, and the sealing door (5) is connected to the transmission auxiliary mechanism; The transmission auxiliary mechanism comprises a circulation pipe (701), an oil separator box (702), an oil dripping port (703), a connecting bottom pipe (704), an oil storage cylinder (705), a sealing cover (706) and an auxiliary control component; the circulation pipe (701) is arranged through the sealing door (5), and the bottom end of the circulation pipe (701) is connected to the oil separator box (702), the bottom end of the oil separator box (702) is equidistantly provided with oil dripping ports (703), the circulation pipe (701) and the connecting bottom pipe (704) are connected via the auxiliary control component, the connecting bottom pipe (704) is arranged at the bottom end of the oil storage cylinder (705), and the oil storage cylinder (705) is provided with a sealing cover (706); The control auxiliary component comprises a first connection box body (801), a second connection box body (802), a docking flange (803), a connection screw (804), a rotation control motor (805), a bearing column (806), a loading slot (807), a positioning threaded slot (808), a loading side plate (809), an oil guide side strip (810), a mounting hole (811), a loading through slot (812), a fitting slot body (813), a fitting plate (814), a support column (815), an auxiliary spring (816), a movable head (817), and a spherical auxiliary surface (818); The first connection box body (801) is connected and arranged at the top end of the circulation tube (701), and the second connection box body (802) is connected and arranged at the bottom end of the connection bottom tube (704). The second connection box body (802) and the first connection box body (801) are symmetrically fixedly provided with docking flanges (803) on the box opening sides, and the docking flanges (803) of the two are connected by connecting screws (804). The rotation control motor (805) is arranged at one end of the first connection box body (801), and the rotation control motor (805) is connected to the connecting plug shaft, and the connecting plug shaft One end of the loading plate (809) is connected to the bearing column (806), the outer wall of the bearing column (806) is equidistantly provided with loading grooves (807), the loading grooves (807) are symmetrically provided with positioning thread grooves (808), the loading side plate (809) is adapted to be placed in the loading groove (807), and the loading side plate (809) is provided with an oil guide strip (810), the loading side plate (809) is provided with a mounting hole (811), and the loading side plate (809) is fixed by screws, the oil guide strip (810) is equidistantly provided with loading through grooves (812), and the mounting hole (811) is provided on the loading side plate (809). One end of the through slot (812) extends into the loading side plate (809); an inner side wall of the loading side plate (809) is provided with a fitting slot body (813); the fitting slot body (813) is adapted to be snap-fitted with the fitting plate (814); support columns (815) are fixedly provided at equal intervals on the fitting plate (814); an auxiliary spring (816) is fixedly provided at one end of the support column (815); the other end of the auxiliary spring (816) is fixedly provided at one end of a movable head (817); and the end surface of the other end of the movable head (817) is provided as a spherical auxiliary surface (818).

2. A speed reducer for a safety ladder winch according to claim 1, characterized in that: The transmission installation assembly comprises an installation slot (601), a fixing frame (602), a bearing block (603), a connection slot (604), a connection spring (605), an installation card plate (606), a buckle (607), an auxiliary circular slot (608), a threaded hole (609), a fastening threaded column (610), a handle (611), and a rotating auxiliary plate (612); the installation slot (601) is symmetrically arranged on both sides of the sealing door (5), the fixing frame (602) is symmetrically fixedly arranged on both sides of the inspection opening (4), and a bearing block (603) is arranged in the fixing frame (602), a connection slot (604) is arranged through the bearing block (603), and the upper and lower ends of the bearing block (603) are A connecting spring (605) is symmetrically fixedly arranged, and the other end of the connecting spring (605) is fixedly arranged on the inner wall of the fixing frame (602). The mounting card (606) is adapted to be plugged into the connecting slot (604), and a buckle (607) is fixedly arranged on one end of the mounting card (606). The auxiliary circular groove (608) is arranged on the upper end surface of the bearing block (603), and the threaded hole (609) is penetrated and arranged at the top of the fixing frame (602). The fastening threaded column (610) is adapted to be threadedly connected with the threaded hole (609), and a handle (611) is fixedly arranged on one end of the fastening threaded column (610), and a rotating auxiliary plate (612) is fixedly arranged equidistantly on the outer wall of the handle (611).

3. A speed reducer for a safety ladder winch according to claim 2, characterized in that: The connection slots (604) in the bearing block (603) correspond to the installation slots (601) in position and are arranged in the same number of groups; a mounting card plate (606) is inserted and arranged in one of the bearing blocks (603); the mounting card plate (606) corresponds to the installation slots (601) in position and are arranged in the same number of groups; and one end of the mounting card plate (606) is adapted to be engaged with the installation slot (601).

4. A speed reducer for a safety ladder winch according to claim 2, characterized in that: The fastening threaded column (610) and the auxiliary circular groove (608) are arranged at corresponding positions and have the same number of groups, and one end of the fastening threaded column (610) is adapted to be plugged into the auxiliary circular groove (608).

5. The speed reducer for a safety ladder winch according to claim 1, characterized in that: The second connection box body (802) and the first connection box body (801) are arranged at corresponding positions and have the same number of groups, and the two are butted together to form a receiving cavity, and the shape of the receiving cavity is a cylindrical cavity.

6. A speed reducer for a safety ladder winch according to claim 1, characterized in that: The fitting groove body (813) is arranged in communication with the loading through groove (812), and the oil guide edge strips (810) and the loading groove (807) are arranged at corresponding positions and have the same number of groups.

7. The speed reducer for a safety ladder winch according to claim 1, characterized in that: The movable head (817) and the support column (815) are arranged at corresponding positions and have the same number of groups, and both the movable head (817) and the support column (815) are placed in the loading slot (812).

8. The speed reducer for a safety ladder winch according to claim 1, characterized in that: The loading through grooves (812) are configured as cylindrical grooves, and the loading through grooves (812) are arranged in a straight line at equal distances in the oil guide edge strip (810).

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