Upper beam system of elevator

Abstract

The invention discloses an elevator upper beam system which comprises a bottom installation base, two upper beam bodies installed in the length direction of the bottom installation base and two rope returning wheel assemblies arranged between the two upper beam bodies and located at the two ends of the upper beam bodies respectively, and each rope returning wheel assembly corresponds to a rope returning rod. The rope returning rods are connected with the upper beam body in a matched mode through the rope returning limiting assemblies, and the rope returning rods can move along the connecting grooves formed in the upper beam body so as to be close to or away from the corresponding rope returning wheel assemblies. The rope returning rod is located below the rope wheel assembly, the rope returning rod is located above the bottom installation base, the rope returning rod is connected with the upper beam body in a matched mode through the rope returning limiting assembly, when rope returning wheels of different sizes are replaced, the rope returning limiting assembly can be rapidly operated to enable the rope returning rod to move along a connecting groove formed in the upper beam body, and the replacement efficiency of the rope returning wheels is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of elevator upper beam, and particularly relates to an elevator upper beam system. BACKGROUND

[0002] The upper beam system of the elevator is located at the upper part of the elevator car and is an important structure for the up and down movement of the elevator. The upper beam system of the elevator is related to the safety of the movement of the car and the comfort and convenience of the passengers riding the elevator.

[0003] The authorized announcement No. CN 217264104 U discloses an elevator upper beam structure with damping, comprising two upper beam bodies and a plurality of rope return wheel assemblies, wherein the two upper beam bodies are oppositely arranged and connected and fixed through an upper beam body connecting plate, and the plurality of rope return wheel assemblies are installed between the two upper beam bodies, wherein the rope return wheel assembly comprises a rope return wheel, rope return wheel fixing plates arranged on both sides of the rope return wheel and fixedly connected with the rope return wheel, and a U-shaped notch is arranged at the upper end of the rope return wheel fixing plate.

[0004] The defect is that the rope return wheel is installed on the upper part of the upper beam body through the wheel fixing plate, and when the rope return wheel is replaced, the rope return wheel can be taken out from the middle of the U-shaped groove without disassembling the rope return wheel fixing plate. A rope blocking rod is arranged below the rope return wheel assembly, and the rope blocking rod is installed on the upper beam body. Since different sizes of rope return wheels need to be moved along the height direction on the upper beam body, the rope blocking rod is installed at both ends through a screw rod and a connecting groove of the upper beam body, resulting in low efficiency of replacing the rope return wheel. SUMMARY

[0005] In view of the above problems existing in the prior art, the application provides an elevator upper beam system, which comprises a bottom mounting seat, two upper beam bodies arranged along the length direction of the bottom mounting seat, and two rope return wheel assemblies arranged between the two upper beam bodies and located at both ends of the upper beam bodies. Each rope return wheel assembly corresponds to a rope blocking rod, and the rope blocking rod is connected with the upper beam body through a rope limiting assembly. The rope blocking rod can move along the connecting groove of the upper beam body to approach or move away from the corresponding rope return wheel assembly. The rope blocking rod is located below the rope return wheel assembly and above the bottom mounting seat. The rope blocking rod is connected with the upper beam body through the rope limiting assembly. When different sizes of rope return wheels are replaced, the rope blocking rod can be quickly moved along the connecting groove of the upper beam body by operating the rope limiting assembly, thereby improving the replacement efficiency of the rope return wheel.

[0006] In order to solve the above technical problems, the application adopts the following technical scheme:

[0007] The elevator upper beam system comprises

[0008] a bottom mounting seat;

[0009] two oppositely arranged upper beam bodies arranged along the length direction of the bottom mounting seat; and

[0010] Two return rope wheel assemblies are arranged between the two upper beam bodies and are located at the two ends of the upper beam bodies, wherein each return rope wheel assembly corresponds to a return rope rod, the return rope rod is located below the rope wheel assembly, and the return rope rod is connected with the upper beam body through a return rope limiting assembly. The return rope rod can move along the connecting groove formed in the upper beam body to approach or move away from the corresponding return rope wheel assembly.

[0011] Further, the return rope limiting assembly comprises a limiting part, a gear set and a connecting structure, the upper beam body has a side plate, the side plate is arranged in parallel with the side of the return rope wheel assembly, the connecting groove is formed in the side plate, the limiting part and the connecting structure are located on the two sides of the side plate respectively, the connecting structure is fixedly connected with the limiting part after penetrating through the connecting groove, and the gear set is rotatably installed on the connecting structure, one side of the gear set is connected with the limiting part, and the other side of the gear set is connected with the side plate of the upper beam body.

[0012] The side of the connecting structure away from the limiting part is rotatably connected with the end of the return rope rod, the return rope rod is connected with the side plate through the connecting structure, and when the limiting part is operated, the return rope limiting assembly as a whole can move along the connecting groove to change the distance between the return rope rod and the return rope wheel assembly.

[0013] Further, the limiting part comprises a limiting shell, a pressing part installed in the limiting shell, pressing springs arranged on the two sides of the pressing part and a pressing handle, the limiting shell is provided with an installation cavity, the pressing part is installed in the middle of the installation cavity, the pressing part is connected with the pressing handle on the two sides, the middle of the pressing handle is located outside the limiting shell, and the pressing springs are symmetrically installed on the two sides of the pressing handle. The pressing part can be connected with the gear set under the action of the pressing springs, and the pressing part can be disconnected with the gear set when the pressing handle outside the limiting shell is operated.

[0014] Further, the pressing part comprises a limiting part and a rotating connecting plate symmetrically arranged on the two sides of the limiting part, the pressing handle is in a "C" type structure as a whole, the ends of the pressing handle are hingedly connected with the ends of the rotating connecting plates respectively, the rotating connecting plates are rotatably installed in the limiting shell, the ends of the rotating connecting plates away from the pressing handle are rotatably connected with the limiting parts respectively, the limiting parts are slidably installed on the inner wall of the limiting shell, the ends of the limiting parts away from the rotating connecting plates are provided with limiting teeth, and the limiting teeth are engaged with the gear set.

[0015] Further, the gear set comprises a gear plate, a transmission gear, and a limiting gear coaxially fixed with the transmission gear, the transmission gear and the limiting gear are in meshing connection, the gear plate is fixed on the connecting structure, the transmission gear and the limiting gear are rotatably installed on the gear plate, and the limiting gear and the transmission gear are located on the two sides of the gear plate respectively, the rack is installed on the side plate close to one side of the upper beam body, the rack is arranged along the height direction of the side plate, and the limiting gear is in meshing connection with the rack.

[0016] Further, the connecting structure comprises an end plate and two connecting plates fixed on one side of the end plate, the two connecting plates are arranged in parallel to each other, the connecting plates are in sliding connection with the connecting grooves, and the ends, away from the end plate, of the connecting plates are fixed to one side of the limiting shell through the connecting grooves of the side plates.

[0017] Further, the pressing handle is fixed with a spring mounting plate on one side, the spring mounting plate is located on the side away from the limiting part, and the pressing spring is installed on the spring mounting plate.

[0018] The guide rods are fixed at both ends of the pressing handle and extend into the guide holes formed in the inner wall of the limiting shell, and the guide holes are arranged in the same direction as the moving direction of the pressing handle.

[0019] Further, the number of the return rope limiting assembly is one, and the end, away from the return rope limiting assembly, of the return rope rod is connected with the side plate of the upper beam body.

[0020] Compared with the prior art, the present scheme has the following beneficial effects:

[0021] The present application provides an elevator upper beam system, which comprises a bottom mounting seat, two upper beam bodies installed along the length direction of the bottom mounting seat, and two return rope wheel assemblies arranged between the two upper beam bodies and located at the two ends of the upper beam bodies respectively, each return rope wheel assembly corresponds to a return rope rod, the return rope rod is connected with the upper beam body through a return rope limiting assembly, and the return rope rod can move along the connecting groove formed in the upper beam body to approach or move away from the corresponding return rope wheel assembly. The return rope rod is located below the rope wheel assembly and above the bottom mounting seat, the return rope rod is connected with the upper beam body through the return rope limiting assembly, and when different sizes of return rope wheels are replaced, the return rope rod can be quickly moved along the connecting groove formed in the upper beam body by operating the return rope limiting assembly, thereby improving the replacement efficiency of the return rope wheel. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of the elevator upper beam system;

[0023] Figure 2 It is a front view of the elevator upper beam system;

[0024] Figure 3 It is a side view of the elevator upper beam system;

[0025] Figure 4 For Figure 3 enlarged view of A in

[0026] Figure 5 is a schematic view of the connection between the return rope rod and the return rope limiting assembly;

[0027] Figure 6 is a schematic view of the movement of the return rope limiting assembly.

[0028] The reference signs are as follows:

[0029] The bottom mounting seat 1, the upper beam body 2, the connecting groove 21, the beam body plate 22, the side plate 23, the rack 24, the return rope wheel assembly 3, the wheel body 31, the wheel fixing plate 32, the wheel shaft 33, the return rope rod 4, the return rope limiting assembly 5, the limiting shell 51, the mounting cavity 511, the pressing component 52, the limiting part 521, the rotating connecting plate 522, the limiting tooth 523, the pressing spring 53, the pressing handle 54, the spring mounting plate 541, the guide rod 542, the gear plate 55, the transmission gear 56, the limiting rotation gear 57, the end plate 58, and the connecting plate 59. DETAILED DESCRIPTION

[0030] The application will be further described in detail below with reference to the accompanying drawings.

[0031] The elevator upper beam system comprises, as shown in Figures 1 to 3 ,

[0032] The bottom mounting seat 1;

[0033] Two oppositely arranged upper beam bodies 2 are mounted along the length direction of the bottom mounting seat 1; and

[0034] Two return rope wheel assemblies 3 are arranged between the two upper beam bodies 2 and are respectively located at the two ends of the upper beam bodies 2, wherein each return rope wheel assembly 3 corresponds to a return rope rod 4, the return rope rod 4 is located below the rope wheel assembly, the return rope rod 4 is connected with the upper beam body 2 through the return rope limiting assembly 5, and the return rope rod 4 can move along the connecting groove 21 formed in the upper beam body 2 to approach or move away from the corresponding return rope wheel assembly 3.

[0035] According to a specific embodiment provided by the application, the two upper beam bodies 2 are arranged in parallel with each other, both of which are made of steel structure, are connected and fixed through the beam body plate 22 between the two upper beam bodies 2, are both mounted on the bottom mounting base 1, and the beam body plate 22 can be mounted between the two upper beam bodies 2, in this embodiment, is preferably mounted at the middle part of the upper beam body 2, and the two return rope wheel assemblies 3 are respectively located at both ends of the upper beam body 2, both of which include the wheel body 31 and the wheel fixing plate 32 located between the two upper beam bodies 2, the wheel fixing plate 32 is arranged in opposition and fixed on the bottom mounting base 1, is not connected between the wheel fixing plate 32 and the upper beam body 2, the height of the wheel fixing plate 32 is greater than that of the upper beam body 2, and each wheel body 31 has a wheel fixing plate 32 arranged on both sides thereof in correspondence, and the wheel body 31 is mounted between the wheel fixing plates 32 through the wheel shaft 33.

[0036] In this embodiment, each return rope wheel assembly 3 corresponds to a return rope rod 4, the return rope rod 4 is located below the rope wheel assembly, and the return rope rod 4 is located above the bottom mounting base 1, the specific structure of the bottom mounting base 1 is not limited in this embodiment, and the bottom mounting base 1 can be installed with the upper beam body 2 as actual convenient, the return rope rod 4 is connected with the upper beam body 2 in cooperation through the return rope limiting assembly 5, when different sizes of return rope wheels are replaced, the return rope rod 4 can be quickly moved along the connecting groove 21 of the upper beam body 2 by operating the return rope limiting assembly 5, and the replacement efficiency of the return rope wheel is improved.

[0037] Further, as shown in the figure, Figures 4 to 6 The return rope limiting assembly 5 includes a limiting part 521, a gear set and a connecting structure, the upper beam body 2 has a side plate 23, the side plate 23 is arranged in parallel with the side of the return rope wheel assembly 3, the connecting groove 21 is formed in the side plate 23, the limiting part 521 and the connecting structure are respectively located on both sides of the side plate 23, the connecting structure is fixedly connected with the limiting part 521 after penetrating through the connecting groove 21, the gear set is rotatably installed on the connecting structure, one side of the gear set is connected with the limiting part 521 in cooperation, and the other side of the gear set is connected with the side plate 23 of the upper beam body 2 in cooperation;

[0038] One side of the connecting structure away from the limiting part 521 is rotatably connected with the end of the return rope rod 4, the return rope rod 4 is connected with the side plate 23 through the connecting structure, and when the limiting part 521 is operated, the return rope limiting assembly 5 as a whole can be moved along the connecting groove 21 to change the distance between the return rope rod 4 and the return rope wheel assembly 3.

[0039] According to one embodiment of the present application, the side plate 23 is vertically arranged, the limiting part 521 is connected with the gear set to limit the movement of the rope limiting assembly 5 along the side plate 23, when the rope limiting assembly 5 moves along the side plate 23, the gear set is engaged with the gear rack 24 of the side plate 23, so the gear set rotates simultaneously, when the limiting part 521 is connected with the gear set, the gear set cannot rotate, so the rope rod 4 is fixed with the side plate 23. The connecting structure is used to connect the limiting part 521 with the gear set, and the side of the connecting structure away from the limiting part 521 is provided with the rope rod 4. When the limiting part 521 is operated, the rope limiting assembly 5 can move along the connecting groove 21 to change the distance between the rope rod 4 and the rope wheel assembly 3.

[0040] Further, the limiting part 521 comprises a limiting shell 51, a pressing part 52 installed in the limiting shell 51, pressing springs 53 arranged on both sides of the pressing part 52, and a pressing handle 54, the limiting shell 51 is provided with an installation cavity 511, the pressing part 52 is installed in the middle of the installation cavity 511, the pressing part 52 is connected with the pressing handle 54 on both sides, the middle of the pressing handle 54 is located outside the limiting shell 51, the pressing springs 53 are symmetrically installed on both sides of the pressing handle 54, under the action of the pressing springs 53, the pressing part 52 can be connected with the gear set, and when the pressing handle 54 is operated outside the limiting shell 51, the pressing part 52 can be disconnected with the gear set.

[0041] According to one embodiment of the present application, the specific structure of the limiting shell 51 is not limited, for example, a hexahedral structure.

[0042] The pressing part 52 is in contact with the gear set under the action of the pressing springs 53, specifically, the pressing springs 53 are compression springs, under the pushing of the pressing springs 53, the pressing handle 54 has a tendency to extend outside the limiting shell 51, when the pressing handle 54 is pressed outside the limiting shell 51 towards the gear set, the pressing part 52 can be disconnected with the gear set.

[0043] Further, the pressing part 52 comprises a limiting part 521 and rotating connecting plates 522 symmetrically arranged on both sides of the limiting part 521, the pressing handle 54 is in a "C" type structure, the ends of the pressing handle 54 are respectively hinged with the ends of one of the rotating connecting plates 522, the rotating connecting plates 522 are rotatably installed in the limiting shell 51, the ends of the rotating connecting plates 522 away from the pressing handle 54 are respectively rotatably connected with the limiting parts 521, the limiting parts 521 are slidably installed on the inner wall of the limiting shell 51, the ends of the limiting parts 521 away from the rotating connecting plates 522 are provided with limiting teeth 523, and the limiting teeth 523 are engaged with the gear set.

[0044] According to one embodiment of the present application, the specific structure of the pressing component 52 is provided. Specifically, the middle part of the rotating connecting plate 522 is rotatably installed in the limiting shell 51. One end of the rotating connecting plate 522 is arranged towards the limiting part 521, and the other end is arranged towards the pressing spring 53. The rotating connecting plate 522 functions as a lever. The whole pressing handle 54 is in a "C" shape structure. The two ends of the pressing handle 54 extend into the installation cavity 511.

[0045] The side surface of the limiting part 521 is fixed with a "T" type connector. The "T" type connector is slidably installed in the "T" type connecting groove formed in the inner wall of the limiting shell 51, so as to realize the sliding connection between the limiting part 521 and the limiting shell 51. The end of the limiting part 521 away from the rotating connecting plate 522 is provided with a limiting tooth 523. The end of the limiting part 521 provided with the limiting tooth 523 extends out of the limiting shell 51. The limiting tooth 523 is engaged with the gear set.

[0046] Further, the gear set comprises a gear plate 55, a transmission gear 56, and a limiting rotation gear 57 fixed coaxially with the transmission gear 56. The transmission gear 56 is engaged with the limiting tooth 523. The gear plate 55 is fixed on the connecting structure. The transmission gear 56 and the limiting rotation gear 57 are rotatably installed on the gear plate 55. The limiting rotation gear 57 and the transmission gear 56 are respectively located on the two sides of the gear plate 55. The side plate 23 of the upper beam body 2 is provided with a rack 24 close to one side. The rack 24 is arranged along the height direction of the side plate 23. The limiting rotation gear 57 is engaged with the rack 24.

[0047] According to one embodiment of the present application, the gear set is located between the limiting shell 51 and the side plate 23. The gear plate 55 is arranged between the two connecting plates 59. The connecting plate 59 and the gear plate 55 are arranged perpendicularly. The transmission gear 56 is engaged with the limiting tooth 523. The limiting rotation gear 57 is engaged with the rack 24 arranged close to one side of the side plate 23 of the upper beam body 2. The rack 24 is located on the side of the connecting groove 21.

[0048] Figure 5 And Figure 6 As shown in the figure, the transmission gear 56 and the limiting tooth 523 are engaged under the pushing of the pressing spring 53. The limiting rotation gear 57 is engaged with the rack 24. Figure 6 is a schematic view of the limiting part 521 away from the transmission gear 56. When the pushing force of the pressing spring 53 is overcome, the limiting part 521 is separated from the transmission gear 56. At this time, the limiting rotation gear 57 can rotate. The connecting structure can drive the return rope rod 4 to move along the connecting groove 21. The distance between the return rope limiting assembly 5 and the return rope wheel assembly 3 is changed.

[0049] Further, the connecting structure comprises an end plate 58 and two connecting plates 59 fixed on one side of the end plate 58, the two connecting plates 59 are arranged in parallel with each other, the connecting plate 59 is in sliding connection with the connecting groove 21, and the end of the connecting plate 59 away from the end plate 58 is fixed on one side of the limiting shell 51 after penetrating through the connecting groove 21 of the side plate 23.

[0050] In the embodiment, the connecting plate 59 can be fixed with a “T” type connector on the side, the “T” type connector is slidingly installed in the “T” type connecting groove arranged on the surface of the connecting groove 21, so as to realize the sliding connection between the connecting plate 59 and the connecting groove 21, and the two ends of the gear plate 55 can also be slidingly connected with the connecting plate 59, so that the gear plate 55 moves along the connecting plate 59 under the pushing of the compression spring 53, so as to realize the meshing connection between the limiting gear 57 and the rack 24, and in the embodiment, the end plate 58 is arranged in parallel with the side plate 23.

[0051] Further, the pressing handle 54 is fixed with a spring mounting plate 541 on one side, the spring mounting plate 541 is located on the side away from the limiting part 521, and the compression spring 53 is mounted on the spring mounting plate 541.

[0052] The pressing handle 54 is fixed with a guide rod 542 at both ends, the guide rod 542 penetrates into the guide hole arranged on the inner wall of the limiting shell 51, and the guide hole is arranged in the same direction as the moving direction of the pressing handle 54. The guide rod 542 functions to limit the movement of the pressing handle 54 in the direction of the guide hole.

[0053] Further, the number of the return rope limiting assembly 5 is one, and the end of the return rope rod 4 away from the return rope limiting assembly 5 is connected with the side plate 23 of the upper beam body 2. The end of the return rope rod 4 away from the return rope limiting assembly 5 can be rotatably connected with the side plate 23 of the upper beam body 2, and by reducing the number of the return rope limiting assembly 5, when the distance between the return rope rod 4 and the return rope wheel is adjusted, only one return rope limiting assembly 5 needs to be operated.

[0054] Finally, it should be noted that in the description of the present application, it should be noted that the terms “vertical”, “upper”, “lower”, “horizontal” and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0055] In the description of the application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] The above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An elevator beam-raising system, characterized in that: include Bottom mounting base; Two upper beams are positioned opposite each other and are installed along the length of the bottom mounting base; and Two return rope pulley assemblies are disposed between two upper beams and located at both ends of the upper beams respectively. Each return rope pulley assembly corresponds to a return rope rod, which is located below the rope pulley assembly. The return rope rod is connected to the upper beam through a return rope limiting assembly. The return rope rod can move along the connecting groove opened in the upper beam to move closer to or away from the corresponding return rope pulley assembly.

2. The elevator beam-raising system according to claim 1, characterized in that: The return rope limiting assembly includes a limiting component, a gear set, and a connecting structure. The upper beam has a side plate, which is parallel to the side of the return rope wheel assembly. The side plate has a connecting groove. The limiting component and the connecting structure are located on opposite sides of the side plate. The connecting structure passes through the connecting groove and is fixedly connected to the limiting component. The gear set is rotatably mounted on the connecting structure, with one side of the gear set engaging with the limiting component and the other side of the gear set engaging with the side plate of the upper beam. The side of the connecting structure away from the limiting component is rotatably connected to the end of the return rope rod. The return rope rod is connected to the side plate through the connecting structure, and when the limiting component is operated, the return rope limiting assembly can move along the connecting groove to change the distance between the return rope rod and the return rope wheel assembly.

3. The elevator beam-raising system according to claim 2, characterized in that: The limiting component includes a limiting shell, a clamping component installed inside the limiting shell, clamping springs disposed on both sides of the clamping component, and a pressure handle. The limiting shell has an installation cavity, the clamping component is installed in the middle of the installation cavity, the two sides of the clamping component are connected to the pressure handle, the middle of the pressure handle is located outside the limiting shell, and the clamping springs are symmetrically installed on both sides of the pressure handle. Under the action of the clamping springs, the clamping component can be connected to the gear set, and when the pressure handle is operated outside the limiting shell, the clamping component can be disengaged from the gear set.

4. The elevator beam-raising system according to claim 3, characterized in that: The clamping component includes a limiting part and rotating connecting plates symmetrically arranged on both sides of the limiting part. The clamping handle has an overall "C" shape structure. The end of the clamping handle is hinged to the end of one of the rotating connecting plates. The rotating connecting plates are rotatably installed inside the limiting shell. The end of the rotating connecting plates away from the clamping handle is rotatably connected to the limiting part. The limiting part is slidably installed on the inner wall of the limiting shell. The end of the limiting part away from the rotating connecting plate has a limiting tooth, which meshes with the gear set.

5. The elevator beam-raising system according to claim 4, characterized in that: The gear set includes a gear plate, a transmission gear, and a rotation-limiting gear fixed coaxially with the transmission gear. The transmission gear and the rotation-limiting gear are meshed and connected. The gear plate is fixed on the connecting structure. The transmission gear and the rotation-limiting gear are rotatably mounted on the gear plate, and the rotation-limiting gear and the transmission gear are located on opposite sides of the gear plate. A rack is installed on the side of the upper beam near the side plate. The rack is arranged along the height direction of the side plate, and the rotation-limiting gear meshes with the rack.

6. The elevator beam-raising system according to any one of claims 2-5, characterized in that: The connection structure includes an end plate and two connecting plates fixed to one side of the end plate. The two connecting plates are arranged parallel to each other. The connecting plates are slidably connected to the connecting groove. The end of the connecting plate away from the end plate passes through the connecting groove of the side plate and is fixed to one side of the limiting shell.

7. The elevator beam-raising system according to claim 3, characterized in that: A spring mounting plate is fixed to one side of the pressure handle. The spring mounting plate is located on the side away from the limiting part, and the pressure spring is mounted on the spring mounting plate. Guide rods are fixed at both ends of the pressure handle. The guide rods extend into guide holes opened in the inner wall of the limiting shell. The opening direction of the guide holes is the same as the moving direction of the pressure handle.

8. The elevator beam-raising system according to claim 7, characterized in that: There is one return rope limiting component, and the end of the return rope rod away from the return rope limiting component is connected to the side plate of the upper beam.

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