Electric winch for elevator

Abstract

The utility model discloses an electric winch for an elevator, which comprises a fixed plate, a motor, a steel cable and a winch, and the inner wall of the fixed plate is provided with a vertically through wiring port. The first meshing structure is arranged at the end, away from the motor, of the transmission shaft used for installing the winch, the second meshing structure and the third meshing structure are arranged below the fixing plate, and when the motor rotates, the first meshing structure, the second meshing structure and the third meshing structure drive the wire sleeve to move left and right in a reciprocating mode. Therefore, when the steel cable is winded, the steel cable penetrating through the inner side wall of the wire guide sleeve is evenly distributed on the winch, driving force and other complex electric appliance control devices do not need to be additionally arranged, the moving speed of the wire guide sleeve completely follows the rotating speed of the motor, it is kept that the steel cable is wound on the outer wall of the winch very tidily, and energy is saved. The structure is simple and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of winches, in particular to an electric winch for elevators. Background Art

[0002] The existing electric winch for installing an elevator needs to reel in the steel wire during use so that the object fixed at the other end of the steel wire rope can be lifted through the pulley block. However, during the reeling process, the steel wire rope is very likely to accumulate in a certain area of ​​the reeling part of the electric winch, resulting in uneven reeling, which in turn makes the reeling part bear uneven force, thereby making the electric winch unstable and damaging the electric winch. Therefore, an electric winch for installing an elevator with a leveling and stabilizing mechanism is needed.

[0003] To this end, there is a public technology on the market that proposes an electric winch for elevator installation with a leveling and stabilizing mechanism, including a winch motor and a leveling assembly, wherein the output end of the winch motor is provided with a winch disk, the outside of the winch disk is provided with a surrounding wire rope, mounting plates are provided on both sides of the winch motor, the mounting plates are fixedly connected to the winch motor, the leveling assembly is provided above the mounting plate, the leveling assembly is provided with a through slot, one end of the wire rope passes through the through slot, the upper and lower ends of the leveling assembly are provided with guide roller assemblies, the guide roller assembly is fixedly connected to the side of the leveling assembly close to the winch disk; finally, the wire rope can be wound evenly, so as to prevent the wire rope from piling up in one place during winding, and to prevent uneven force at the winding place from affecting the operation of the electric winch;

[0004] However, the above-mentioned improved technology includes both electro-hydraulic components for driving and sensors for sensing motion, which is not only very troublesome to install and debug, but also very inconvenient to maintain later. In addition, electro-hydraulic components are added in addition to the motor, which is not energy-efficient. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an electric winch for an elevator.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an electric winch for an elevator, comprising a fixed plate, a motor, a steel cable and a winch, wherein the inner wall of the fixed plate is provided with a wiring opening which passes through from top to bottom, the motor is fixedly connected to the upper wall of the fixed plate through a bracket and is located on the right side of the wiring opening, the end of the motor protruding shaft is fixedly connected with a transmission shaft, the upper wall of the fixed plate and the left and right sides of the wiring opening are fixedly connected with rotating seats, the upper wall of the fixed plate and the left sides of the two groups of rotating seats are fixedly connected with an upper box, the end of the transmission shaft away from the motor passes through the inner walls of the two groups of rotating seats and the right wall of the upper box in sequence and extends into the interior of the upper box, the transmission shaft is rotatably connected with the two groups of rotating seats, the winch is fixedly connected to the outer wall of the transmission shaft and is located between the two groups of rotating seats, the upper wall of the fixed plate and the interior of the upper box is rotatably connected with a first rotating shaft, the first rotating shaft and the end of the transmission shaft extending into the interior of the upper box are rotatably connected through a first meshing structure, the lower wall of the fixed plate and the left and right sides of the wiring opening are respectively fixedly connected with a first sliding seat and a second sliding seat, and the inner side walls of the first sliding seat and the second sliding seat are respectively slidably connected with a first sliding rod , a second sliding rod, a wire structure for guiding the direction of the steel cable is fixedly connected between the opposite ends of the first sliding rod and the second sliding rod, a lower box is fixedly connected to the lower wall of the fixed plate and located on the side of the first sliding seat away from the second sliding seat, a partition parallel to the lower surface of the fixed plate is fixedly connected to the inner wall of the lower box, an end of the first rotating shaft away from the first meshing structure passes through the inner wall of the fixed plate and extends into the lower box, two groups of second rotating shafts are rotatably connected between the fixed plate and the lower inner wall of the lower box, the two groups of second rotating shafts are respectively located on the front and rear sides of the first rotating shaft and Both penetrate the partition, and the two groups of the second rotating shafts are located between the outer wall above the partition and the first rotating shaft, and a second meshing structure for meshing transmission is arranged between the outer wall above the partition and the first rotating shaft. The inner lower wall of the lower box and the partition are slidably connected with a toggle bar through a guide structure. The two groups of the second rotating shafts are located between the outer wall between the partition and the inner lower wall of the lower box and the toggle bar, and a third meshing structure for driving the rod to move the toggle bar left and right is arranged between the outer wall and the toggle bar between the partition and the inner lower wall of the lower box. One end of the first sliding rod toward the lower box passes through the side wall of the lower box and extends into the interior of the lower box, and the end of the first sliding rod extending into the interior of the lower box is fixedly connected to the right end of the toggle bar.

[0007] As a further description of the above technical solution:

[0008] The first meshing structure includes a first bevel gear and a second bevel gear, which are respectively fixedly connected to one end of the transmission shaft located inside the upper box and one end of the first rotating shaft located inside the upper box, and the outer wall of the first bevel gear meshes with the outer wall of the second bevel gear.

[0009] As a further description of the above technical solution:

[0010] The wire structure is a wire sleeve, which is fixedly connected between the opposite ends of the first slide bar and the second slide bar. The inner wall of the wire sleeve is provided with a through hole that passes through from top to bottom. Transition chamfers are provided at both ends of the through hole. The inner wall of the wire sleeve is rotatably connected to multiple sets of balls.

[0011] As a further description of the above technical solution:

[0012] The second meshing structure includes a first circular gear and two groups of second circular gears. The first circular gear is fixedly connected to one end of the first rotating shaft extending into the lower box, and the two groups of second circular gears are respectively fixedly connected to the outer walls of the two groups of second rotating shafts, and the outer walls of the two groups of second circular gears are meshed with the outer walls of the first circular gear.

[0013] As a further description of the above technical solution:

[0014] The guide structure includes a slide rail, four groups of sliding columns and two slide grooves. The slide rail is fixedly connected to the lower wall on the inner side of the lower box. The length direction of the slide rail is parallel to the length direction of the first slide rod. The two groups of slide grooves are respectively arranged on the opposite side of the slide rail and the partition. The four groups of sliding columns are fixedly connected to the upper wall and the lower wall of the toggle bar in pairs. The four groups of sliding columns are respectively slidably connected to the inner walls of the two groups of slide grooves.

[0015] As a further description of the above technical solution:

[0016] The third meshing structure includes two groups of incomplete gears, which are respectively fixedly connected to the outer walls of the two groups of second rotating shafts and located below the partition. The two groups of incomplete gears are semicircular gears. The front wall and the rear wall of the toggle bar are respectively provided with teeth for meshing with the two groups of incomplete gears respectively. The two groups of incomplete gears are respectively meshed with the toggle bar.

[0017] The utility model has the following beneficial effects:

[0018] Compared with the prior art, the electric winch for the elevator is provided with a first meshing structure at the end of the transmission shaft for installing the winch away from the motor, and a second meshing structure and a third meshing structure are provided under the fixed plate. When the motor rotates, the wire sleeve is driven to move back and forth left and right through the first meshing structure, the second meshing structure and the third meshing structure, so that the steel cable passing through the inner wall of the wire sleeve when the steel cable is hoisted is evenly distributed on the winch, and there is no need to set up an additional driving force or other complex electrical control devices. The moving speed of the wire sleeve completely follows the rotation speed of the motor, so that the steel cable is kept very neatly wound around the outer wall of the winch, which is more energy-saving, simple in structure but highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the overall structure of the electric hoist for an elevator proposed in the utility model;

[0020] Figure 2 This is a schematic diagram of the upward structure of the fixed plate of the electric hoist for the elevator proposed by the utility model;

[0021] Figure 3 It is a partial cross-sectional view of the internal structure of the upper box of the electric hoist for the elevator proposed by the utility model;

[0022] Figure 4 It is a schematic diagram of the partial structural section of the fixing plate and the lower box of the electric hoist for the elevator proposed by the utility model;

[0023] Figure 5 It is a partial cross-sectional view of the internal structure of the lower box of the electric hoist for the elevator proposed by the utility model;

[0024] Figure 6 The utility model is a partial cross-sectional view of the internal structure of the wire sleeve of the electric hoist for elevator.

[0025] Legend:

[0026] 1. Fixed plate; 2. Wiring opening; 3. Bracket; 4. Motor; 5. Rotating seat; 6. Winch; 7. Upper box; 8. Wire sleeve; 9. Transmission shaft; 10. First sliding seat; 11. Second sliding seat; 12. First slide bar; 13. Second slide bar; 14. Lower box; 15. First bevel gear; 16. First rotating shaft; 17. Second bevel gear; 18. First circular gear; 19. Partition; 20. Second rotating shaft; 21. Second circular gear; 22. Incomplete gear; 23. Toggle bar; 24. Slide rail; 25. Sliding column; 26. Slide groove; 27. Ball bearing; 28. Transition chamfer. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figures 1 to 6, the electric winch for elevators provided by the present utility model: includes a fixing plate 1, a motor 4, a steel cable, and a winch drum 6. A wire passing opening 2 that penetrates up and down is provided on the inner wall of the fixing plate 1. The steel cable passes through the wire passing opening 2 from below the fixing plate 1 and then winds around the outer wall of the winch drum 6. In this embodiment, the拨动条23 can be arranged coaxially with the length direction of the first sliding rod 12, or in order to save space in the left - right direction, a C - shaped connecting piece can be used to arrange the拨动条23 on the front side or the rear side of the first sliding rod 12. This embodiment only expands and explains with the拨动条23 and the first sliding rod 12 arranged in the left - right distribution;

[0029] As Figure 1 shown, in order to wind the steel cable, the motor 4 is fixedly connected to the upper wall of the fixing plate 1 through a bracket 3 and is located on the right side of the wire passing opening 2. The end of the protruding shaft of the motor 4 is fixedly connected to a transmission shaft 9. On the upper wall of the fixing plate 1 and on both the left and right sides of the wire passing opening 2, rotating seats 5 are fixedly connected. On the upper wall of the fixing plate 1 and on the left side of the two groups of rotating seats 5, an upper box 7 is fixedly connected. The end of the transmission shaft 9 away from the motor 4 sequentially penetrates the inner walls of the two groups of rotating seats 5 and the right wall of the upper box 7 and extends into the interior of the upper box 7. The transmission shaft 9 is rotatably connected to the two groups of rotating seats 5. The winch drum 6 is fixedly connected to the outer wall of the transmission shaft 9 and is located between the two groups of rotating seats 5.

[0030] As Figure 3 shown, in order to drive the first rotating shaft 16 to rotate synchronously when the motor 4 rotates, a first rotating shaft 16 is rotatably connected to the upper wall of the fixing plate 1 and inside the upper box 7. The end of the transmission shaft 9 extending into the interior of the upper box 7 and the first rotating shaft 16 are rotationally connected through a first meshing structure. The first meshing structure includes a first bevel gear 15 and a second bevel gear 17. The first bevel gear 15 and the second bevel gear 17 are respectively fixedly connected to the end of the transmission shaft 9 inside the upper box 7 and the end of the first rotating shaft 16 inside the upper box 7. The outer wall of the first bevel gear 15 meshes with the outer wall of the second bevel gear 17. When the motor 4 rotates, it drives the transmission shaft 9 to rotate, and the transmission shaft 9 drives the first rotating shaft 16 to rotate through the meshing relationship between the first bevel gear 15 and the second bevel gear 17;

[0031] As Figure 2 、 Figure 6 It should be noted that there is an unclear "拨动条23" in the original text. You may need to check and correct it according to the actual situation.As shown, in order to maintain the stability when the toggle bar 23 drives the wire sleeve 8 to move left and right, the lower wall of the fixed plate 1 and the left and right sides of the wiring opening 2 are respectively fixedly connected to the first sliding seat 10 and the second sliding seat 11, and the inner side walls of the first sliding seat 10 and the second sliding seat 11 are respectively slidably connected to the first sliding rod 12 and the second sliding rod 13, and the first sliding rod 12 and the second sliding rod 13 are fixedly connected between the opposite ends of the first sliding rod 12 and the second sliding rod 13. The wire structure is the wire sleeve 8, and the wire sleeve 8 is fixedly connected to the first sliding rod 12 and the second sliding rod 13. Between the first slide bar 12 and the opposite end of the second slide bar 13, the inner wall of the wire sleeve 8 is provided with a through hole which penetrates vertically, and the upper and lower ends of the through hole are provided with transition chamfers 28. The inner wall of the wire sleeve 8 is rotatably connected with multiple sets of balls 27. After one end of the steel cable hangs a heavy object, the other end passes through the inner wall of the wire sleeve 8 and the inside of the wiring port 2 and is then wound around the outer wall of the winch 6, and the end of the steel cable away from the heavy object is fixedly connected to the winch 6. When the winch 6 winds the steel cable, the wire sleeve 8 moves left and right to drive the steel cable to be evenly wound around the outer wall of the winch 6.

[0032] like Figure 4 As shown, in order to synchronously drive the two sets of second rotating shafts 20 to rotate when the first rotating shaft 16 rotates, the lower wall of the fixed plate 1 and the side of the first sliding seat 10 away from the second sliding seat 11 are fixedly connected with the lower box 14, and the inner wall of the lower box 14 is fixedly connected with a partition 19 parallel to the lower surface of the fixed plate 1. The end of the first rotating shaft 16 away from the first meshing structure passes through the inner wall of the fixed plate 1 and extends into the lower box 14. Two sets of second rotating shafts 20 are rotatably connected between the fixed plate 1 and the lower wall of the inner side of the lower box 14. The two sets of second rotating shafts 20 are respectively located on the front and rear sides of the first rotating shaft 16 and both pass through the partition 19. The two sets of second rotating shafts 20 A second meshing structure for meshing transmission is provided between the outer wall above the partition 19 and the first rotating shaft 16. The second meshing structure includes a first circular gear 18 and two sets of second circular gears 21. The first circular gear 18 is fixedly connected to one end of the first rotating shaft 16 extending into the lower box 14. The two sets of second circular gears 21 are respectively fixedly connected to the outer walls of the two sets of second rotating shafts 20, and the outer walls of the two sets of second circular gears 21 are meshed with the outer walls of the first circular gear 18. Through the meshing action of the two sets of second circular gears 21 and the outer walls of the first circular gear 18, the two sets of second rotating shafts 20 are synchronously driven to rotate when the first rotating shaft 16 rotates.

[0033] like Figure 4 , Figure 5As shown, in order to drive the wire sleeve 8 to reciprocate left and right when the motor 4 rotates, the lower wall of the lower box 14 and the partition 19 are slidably connected with a toggle bar 23 through a guide structure, and the outer wall of the two sets of second rotating shafts 20 between the partition 19 and the lower wall of the lower box 14 and the toggle bar 23 is provided with a third meshing structure for driving the toggle bar 23 to move left and right, and one end of the first sliding rod 12 toward the lower box 14 passes through the side wall of the lower box 14 and extends into the lower box 14, and one end of the first sliding rod 12 extending into the lower box 14 is connected to the toggle bar 2 3 is fixedly connected at the right end, the guide structure includes a slide rail 24, four sets of sliding columns 25 and two slide grooves 26, the slide rail 24 is fixedly connected to the lower wall of the inner side of the lower box 14, the length direction of the slide rail 24 is parallel to the length direction of the first slide bar 12, the two sets of slide grooves 26 are respectively arranged on the opposite side of the slide rail 24 and the partition 19, the four sets of sliding columns 25 are fixedly connected to the upper wall and the lower wall of the toggle bar 23 in pairs, the four sets of sliding columns 25 are respectively slidably connected to the inner side walls of the two sets of slide grooves 26, and the third meshing structure includes two sets of incomplete gears 22 The two groups of incomplete gears 22 are respectively fixedly connected to the outer walls of the two groups of second rotating shafts 20 and are located below the partition 19. The two groups of incomplete gears 22 are semicircular gears. The front wall and the rear wall of the toggle bar 23 are respectively provided with teeth for meshing with the two groups of incomplete gears 22. The two groups of incomplete gears 22 are respectively meshed with the toggle bar 23. When the two groups of second rotating shafts 20 rotate, the two groups of incomplete gears 22 are driven to rotate simultaneously. Since the two groups of incomplete gears 22 are semicircular gears, when rotating, only one group is always meshed with the toggle bar 23. , and the two groups of incomplete gears 22 can enter the meshing state with the toggle bar 23 immediately after one group of incomplete gears 22 just disengages from the toggle bar 23. Since the two groups of incomplete gears 22 are respectively meshed with the front and rear sides of the toggle bar 23, the above state enables the two groups of incomplete gears 22 to drive the toggle bar 23 to move back and forth left and right when they continue to rotate, thereby driving the wire sleeve 8 to move left and right. The toggle bar 23 of appropriate length and the incomplete gear 22 with appropriate number of teeth can be selected according to the length of the capstan 6.

[0034] Working principle: When the motor 4 rotates, it drives the transmission shaft 9 to rotate. The transmission shaft 9 drives the first rotating shaft 16 to rotate through the meshing relationship between the first bevel gear 15 and the second bevel gear 17. After one end of the steel cable lifts the weight, the other end passes through the inner wall of the wire sleeve 8 and the inside of the wiring port 2 and is wound around the outer wall of the capstan 6. The end of the steel cable away from the weight is fixedly connected to the capstan 6. When the capstan 6 winds the steel cable, the wire sleeve 8 moves left and right to drive the steel cable to be evenly wound around the outer wall of the capstan 6. Through the meshing action of the two sets of second circular gears 21 and the outer wall of the first circular gear 18, the first rotating shaft 16 rotates and synchronously drives the two sets of second rotating shafts 20 to rotate. When the two sets of second rotating shafts 20 rotate, they drive the two sets of incomplete gears The wheels 22 rotate simultaneously. Since the two groups of incomplete gears 22 are both semicircular gears, during rotation, only one group is always engaged with the toggle bar 23, and the two groups of incomplete gears 22 can immediately enter the meshing state with the toggle bar 23 after one group of incomplete gears 22 has just disengaged from the toggle bar 23. Since the two groups of incomplete gears 22 are respectively meshed with the front and rear sides of the toggle bar 23, the above state enables the two groups of incomplete gears 22 to drive the toggle bar 23 to move back and forth left and right when they continue to rotate, thereby driving the wire sleeve 8 to move left and right. The toggle bar 23 of appropriate length and the incomplete gear 22 with appropriate number of teeth can be selected according to the length of the capstan 6.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric winch for an elevator, characterized in that: The invention comprises a fixed plate (1), a motor (4), a steel cable and a winch (6); the inner wall of the fixed plate (1) is provided with a wiring opening (2) which passes through from top to bottom; the motor (4) is fixedly connected to the upper wall of the fixed plate (1) through a bracket (3) and is located on the right side of the wiring opening (2); the end of the motor (4) extending outward from the shaft is fixedly connected to a transmission shaft (9); the upper wall of the fixed plate (1) and the left and right sides of the wiring opening (2) are fixedly connected to rotating seats (5); the upper wall of the fixed plate (1) and the left sides of the two groups of rotating seats (5) are fixedly connected to an upper box (7); the end of the transmission shaft (9) away from the motor (4) passes through the inner walls of the two groups of rotating seats (5) and the right wall of the upper box (7) in sequence and extends into the interior of the upper box (7); the transmission shaft (9) 9) is rotatably connected with the two groups of rotating seats (5), the capstan (6) is fixedly connected to the outer wall of the transmission shaft (9) and is located between the two groups of rotating seats (5), the upper wall of the fixed plate (1) is located inside the upper box (7) and is rotatably connected with a first rotating shaft (16), the first rotating shaft (16) is rotatably connected with one end of the transmission shaft (9) extending into the interior of the upper box (7) through a first meshing structure, the lower wall of the fixed plate (1) is located on the left and right sides of the wiring opening (2) and is respectively fixedly connected with a first sliding seat (10) and a second sliding seat (11), the inner side walls of the first sliding seat (10) and the second sliding seat (11) are respectively slidably connected with a first sliding rod (12) and a second sliding rod (13), the first sliding rod (12) and the second sliding rod (13) are respectively slidably connected with each other, and the first sliding rod (12) and the second sliding rod (13) are respectively slidably connected with each other. (13) A wire structure for guiding the direction of the steel cable is fixedly connected between the opposite ends; a lower box (14) is fixedly connected to the lower wall of the fixed plate (1) and is located on the side of the first sliding seat (10) away from the second sliding seat (11); a partition (19) parallel to the lower surface of the fixed plate (1) is fixedly connected to the inner wall of the lower box (14); an end of the first rotating shaft (16) away from the first meshing structure passes through the inner wall of the fixed plate (1) and extends into the lower box (14); two groups of second rotating shafts (20) are rotatably connected between the fixed plate (1) and the lower inner wall of the lower box (14); the two groups of the second rotating shafts (20) are respectively located on the front and rear sides of the first rotating shaft (16) and both pass through the partition (19); the two groups of the second rotating shafts (20) are The shaft (20) is located on an outer wall above the partition (19) and is provided with a second meshing structure for meshing transmission between the first rotating shaft (16); the inner lower wall of the lower box (14) and the partition (19) are slidably connected with a toggle bar (23) through a guide structure; the two groups of the second rotating shafts (20) are located between the outer wall between the partition (19) and the inner lower wall of the lower box (14) and the toggle bar (23) and are provided with a third meshing structure for driving the toggle bar (23) to move left and right; one end of the first sliding rod (12) toward the lower box (14) passes through the side wall of the lower box (14) and extends into the interior of the lower box (14); the end of the first sliding rod (12) extending into the interior of the lower box (14) is fixedly connected to the right end of the toggle bar (23).

2. The electric hoist for elevator according to claim 1, characterized in that: The first meshing structure comprises a first bevel gear (15) and a second bevel gear (17). The first bevel gear (15) and the second bevel gear (17) are respectively fixedly connected to one end of the transmission shaft (9) located inside the upper box (7) and one end of the first rotating shaft (16) located inside the upper box (7). The outer wall of the first bevel gear (15) meshes with the outer wall of the second bevel gear (17).

3. The electric hoist for elevator according to claim 2, characterized in that: The wire structure is a wire sleeve (8), which is fixedly connected between the opposite ends of the first slide bar (12) and the second slide bar (13). The inner wall of the wire sleeve (8) is provided with a through hole that passes through the upper and lower ends, and transition chamfers (28) are provided at both the upper and lower ends of the through hole. The inner wall of the wire sleeve (8) is rotatably connected to multiple groups of balls (27).

4. The electric hoist for elevator according to claim 3, characterized in that: The second meshing structure comprises a first circular gear (18) and two groups of second circular gears (21), wherein the first circular gear (18) is fixedly connected to one end of the first rotating shaft (16) extending into the interior of the lower box (14), and the two groups of the second circular gears (21) are respectively fixedly connected to the outer walls of the two groups of second rotating shafts (20), and the outer walls of the two groups of second circular gears (21) are meshed with the outer wall of the first circular gear (18).

5. The electric hoist for elevator according to claim 4, characterized in that: The guide structure comprises a slide rail (24), four groups of sliding columns (25) and two slide grooves (26); the slide rail (24) is fixedly connected to the inner lower wall of the lower box (14); the length direction of the slide rail (24) is parallel to the length direction of the first slide bar (12); the two groups of slide grooves (26) are respectively arranged on the opposite side of the slide rail (24) and the partition (19); the four groups of sliding columns (25) are respectively fixedly connected to the upper wall and the lower wall of the toggle bar (23) in pairs; the four groups of sliding columns (25) are respectively slidably connected to the inner side walls of the two groups of slide grooves (26).

6. The electric hoist for elevator according to claim 5, characterized in that: The third meshing structure comprises two groups of incomplete gears (22), the two groups of incomplete gears (22) are respectively fixedly connected to the outer walls of the two groups of second rotating shafts (20) and are located below the partition (19), the two groups of incomplete gears (22) are both semicircular gears, the front wall and the rear wall of the toggle bar (23) are respectively provided with teeth for respectively meshing with the two groups of incomplete gears (22), and the two groups of incomplete gears (22) are respectively meshed with the toggle bar (23).

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