A speed limiter wire rope hoisting device

Abstract

The application provides a speed limiter steel wire rope hoisting device, which comprises a speed limiter installed on the ground of a machine room, a speed limiter steel wire rope passing through a loop frame on the ground of the machine room into an elevator shaft, and winches oppositely arranged on both sides of the speed limiter and wound with a lifting rope, wherein the winches are installed on the ground of the machine room through a support frame, one end of the lifting rope penetrates through the loop frame and is connected with a clamping assembly located below the ground of the machine room, and the speed limiter steel wire rope located in the elevator shaft extends to the inside of the clamping assembly. The application has the advantages of compact structure, the clamping assembly connected with the winches is arranged to clamp and lift the speed limiter steel wire rope under the driving of the winches, the performance of the lifting rope is prevented from being damaged, bent and destroyed by forcibly separating the speed limiter steel wire rope with tools, the separation of the speed limiter steel wire rope from the speed limiter is facilitated, the labor intensity of lifting the speed limiter steel wire rope upward is reduced, the safety of elevator operation is improved, and the periodic checking work of the action speed of the speed limiter is ensured.

Description

Technical Field

[0001] This invention relates to the field of elevator maintenance technology, and in particular to a speed governor wire rope lifting device. Background Technology

[0002] As safety components of an elevator, the speed governor and safety brake work together to effectively stop the car when the elevator overspeeds. Therefore, according to inspection regulations, the operating speed of the speed governor needs to be calibrated periodically.

[0003] During the speed limiter calibration process, the first thing to do is to separate the speed limiter wire rope from the speed limiter wheel so that the speed limiter wheel can rotate normally under the drive of the speed limiter calibrator.

[0004] Current techniques involve using bolt cutters to separate the speed governor cable from the speed governor wheel, or maintenance personnel lifting the speed governor tensioning wheel located in the pit. The first method is rather primitive, and the speed governor cable is easily damaged or bent, compromising its performance. The second method protects the speed governor cable from damage, but due to the weight of the cable itself, especially in high-rise buildings, it is difficult to separate the speed governor cable from the speed governor wheel in the machine room. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that it is difficult to separate the speed limiter from the speed limiter wire rope.

[0006] This invention provides a speed governor wire rope lifting device, including a speed governor installed on the machine room floor. The speed governor wire rope passes through a frame on the machine room floor and enters the elevator shaft. Winches with lifting ropes wound around them are installed on both sides of the speed governor. The winches are installed on the machine room floor via a support frame. One end of the lifting rope passes through the frame and connects to a clamping assembly located below the machine room floor. The speed governor wire rope located in the elevator shaft extends into the interior of the clamping assembly.

[0007] Furthermore, the frame is located on the floor of the computer room near the speed limiter.

[0008] Furthermore, the support frame includes a mounting plate, and a column is detachably and slidably connected to the side edge of the mounting plate. The bottom end of the column is mounted on the floor of the computer room via a base.

[0009] Furthermore, the mounting plate has a first vertical elongated hole near the winch, and the winch is detachably installed in the first vertical elongated hole by means of a spiral fastener, and the winch is vertically adjustable along the first vertical elongated hole.

[0010] Furthermore, a guide wheel is provided below the winch and mounted on the mounting plate via a bracket. The guide wheel is rotatably connected to the bracket. A second vertical elongated hole is provided on the mounting plate near the bracket. The bracket is detachably installed in the second vertical elongated hole via a spiral fastener. The bracket is vertically adjustable along the second vertical elongated hole.

[0011] Furthermore, the winch is a manual winch or an electric winch.

[0012] Furthermore, the clamping assembly includes two parallel and detachably connected clamping plates. One of the clamping plates has an extension plate connected to its top end. The extension plate has a groove, and a sliding member connected to the lifting rope is slidably installed in the groove. A pin is provided between the clamping plates, and an eccentric clamping block is rotatably connected to the pin. A torsion spring is installed between the eccentric clamping block and the pin. The speed limiter wire rope is arranged between the two eccentric clamping blocks. The top end of the eccentric clamping block is inclined towards the speed limiter wire rope. The position of the eccentric clamping block near its bottom end is hinged to the sliding member through a connecting rod.

[0013] Furthermore, the clamping plates are detachably connected by bolts, with both ends of the bolts passing through the two clamping plates and extending to the outside to connect with disc nuts.

[0014] Furthermore, the top of the eccentric clamp is provided with an arc groove, and after the two eccentric clamps rotate, they clamp the speed limiter wire rope through the arc groove.

[0015] Furthermore, the sliding member is disposed on the side of the extension plate away from the speed limiter wire rope, and the two ends of the sliding member are bent toward the speed limiter wire rope. The two ends of the sliding member are provided with a stop bar on the outer wall near the speed limiter wire rope.

[0016] This invention has a compact structure. By setting up a clamping component connected to the winch, the lifting speed limiter wire rope is clamped under the drive of the winch. This avoids damage or bending of the speed limiter wire rope caused by using tools to forcibly separate it, thus facilitating separation and reducing labor intensity. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the support frame structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the clamping assembly structure of the present invention;

[0021] Explanation of reference numerals in the attached figures:

[0022] In the diagram: 1-Speed ​​limiter, 2-Column, 3-Base, 4-Windshaft, 5-Mounting plate, 6-Bracket, 7-Speed ​​limiter wire rope, 8-Clamping assembly, 9-Clamping plate, 10-Pin, 11-Eccentric clamping block, 12-Crank arm, 13-Circular groove, 14-Connecting rod, 15-Groove, 16-Sliding part, 17-Limiting plate, 18-Wing nut, 19-Bolt, 20-Lifting rope, 21-Machine room floor; Detailed Implementation

[0023] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Example 1

[0027] like Figures 1-3 As shown:

[0028] A speed limiter wire rope lifting device includes a speed limiter 1 installed on the machine room floor 21. A frame is provided on the machine room floor 21 near the speed limiter 1. The speed limiter wire rope 7 wrapped around the speed limiter 1 passes through the frame and extends to the elevator shaft below the machine room floor 21.

[0029] The speed limiter 1 has winches 4 installed on its left and right sides, with lifting ropes 20 wound around them. The winches 4 are installed on the machine room floor 21 by a support frame. The winches 4 are manual winches 4 or electric winches 4. One end of the lifting rope 20 passes through the frame and extends to the elevator shaft below the machine room floor 21.

[0030] like Figure 2 As shown, the support frame includes a mounting plate 5, with columns 2 slidably connected to the two side edges of the mounting plate 5. The side wall of the column 2 has a sliding groove. The side of the mounting plate 5 is inserted into the sliding groove and locked by threaded fasteners installed on the column 2. The mounting plate 5 can slide up and down along the column 2 and be locked by screws. The bottom end of the column 2 is installed on the machine room floor 21 through a base 3. The base 3 is set on the front and rear sides of the speed limiter 1. The support frame spans across both sides of the speed limiter 1.

[0031] The mounting plate 5 has a first vertical elongated hole near the winch 4. The winch 4 is detachably installed in the first vertical elongated hole by means of a spiral fastener. The winch 4 can be adjusted vertically along the first vertical elongated hole.

[0032] A bracket 6 is provided directly below the winch 4. A guide wheel is installed on the bracket 6 and is rotatably connected to the bracket 6 to guide the lifting rope 20 of the winch 4. A second vertical elongated hole is provided on the mounting plate 5 near the bracket 6. The bracket 6 is detachably installed in the second vertical elongated hole by means of a spiral fastener. The bracket 6 is vertically adjusted along the second vertical elongated hole.

[0033] The lifting rope 20 passes through the ring and connects to the clamping assembly 8 located below the machine room floor 21, and the speed limiter wire rope 7 extends into the interior of the clamping assembly 8.

[0034] like Figure 3 As shown, the clamping assembly 8 includes two parallel clamping plates 9, which are detachably connected by bolts 19. The two ends of the bolts 19 pass through the two clamping plates 9 and extend to the outside to connect to the disc nut 18, so as to achieve quick disassembly.

[0035] One of the clamping plates 9 has an extension plate connected to its top. The extension plate has a groove 15. A sliding member 16 connected to the lifting rope 20 is slidably installed in the groove 15. A limiting plate 17 can also be set above the groove 15 to prevent the sliding member 16 from falling out of the groove 15 during the upward movement.

[0036] The sliding member 16 is located on the side of the extension plate away from the speed limiter wire rope 7. The two ends of the sliding member 16 are bent towards the speed limiter wire rope 7. The two ends of the sliding member 16 are provided with a stop bar on the outer wall near the speed limiter wire rope 7. After the two ends of the sliding member 16 are bent, they surround the groove 15. With the addition of the stop bar, the sliding member 16 is prevented from detaching from the extension plate during movement.

[0037] A pin 10 is provided between the clamping plates 9. An eccentric clamping block 11 is rotatably connected to the pin 10. A torsion spring is installed between the eccentric clamping block 11 and the pin 10. The speed limiter wire rope 7 is placed between the two eccentric clamping blocks 11. The top of the eccentric clamping block 11 is provided with an arc groove 13. After the two eccentric clamping blocks 11 rotate, they clamp the speed limiter wire rope 7 through the arc groove 13. In the initial state, the eccentric clamping blocks 11 are tilted and the arc groove 13 is separated from the speed limiter wire rope 7, which is a non-contact state.

[0038] The top of the eccentric clamp 11 is inclined toward the speed limiter wire rope 7. A crank arm 12 is installed near the bottom of the eccentric clamp 11. The crank arm 12 is hinged to the sliding member 16 through the connecting rod 14.

[0039] The lower end of the lifting rope 20 is connected to the side of the sliding member 16. When the winch 4 rotates and drives the lifting rope 20 to lift upward, the sliding member 16 moves upward accordingly. The sliding member 16 moves up relative to the extension plate. The sliding member 16 drives the eccentric clamp 11 to rotate through the connecting rod 14 and the crank arm 12, so that the eccentric clamp 11 clamps the speed limiter wire rope 7 through the clamp arc groove 13. The clamp arc groove 13 can increase the contact area with the speed limiter wire rope 7, increase the friction, and prevent damage to the speed limiter wire rope 7.

[0040] As the winch 4 tightens the lifting rope 20, the arc groove 13 on the eccentric clamp 11 slowly rotates to clamp the speed limiter wire rope 7 until the arc groove 13 clamps the speed limiter wire rope 7. After clamping, the winch 4 continues to rotate to drive the speed limiter wire rope 7 upward.

[0041] When the speed limiter wire rope 7 is raised to a certain height, the winch 4 is in a stopped state, the eccentric clamp 11 remains in a clamped state, and the arc groove 13 of the eccentric clamp 11 still clamps the speed limiter wire rope 7, thus separating the speed limiter wire rope 7 from the speed limiter 1 wheel groove, and then the operator verifies the operating speed of the speed limiter 1.

[0042] After the speed limiter 1 is calibrated, the winch 4 rotates in the opposite direction, the lifting rope 20 is released, the sliding part 16 is no longer subjected to upward lifting force, and under the action of the torsion spring, the eccentric clamp 11 rotates in the opposite direction. The arc groove 13 of the eccentric clamp 11 separates from the speed limiter wire rope 7 and no longer clamps the speed limiter wire rope 7.

[0043] The bolts 19 between the two clamping plates 9 adopt a stepped design. The stepped bolts can restrict the clamping plates 9, ensure the distance between the two clamping plates 9, and prevent the eccentric clamping block 11 from being squeezed into a stuck state.

[0044] This invention has a compact structure. By setting up a clamping component connected to the winch, the lifting speed limiter wire rope is clamped under the drive of the winch. This avoids damage or bending of the speed limiter wire rope caused by using tools to forcibly separate it, thus facilitating separation and reducing labor intensity.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A speed limiter wire rope lifting device, characterized in that: The system includes a speed governor installed on the floor of the machine room. The speed governor's wire rope passes through a frame on the floor of the machine room and enters the elevator shaft. Two winches with lifting ropes are installed on opposite sides of the speed governor. The winches are mounted on the floor of the machine room via a support frame. One end of the lifting rope passes through the frame and connects to a clamping assembly located below the floor of the machine room. The speed governor's wire rope located in the elevator shaft extends into the interior of the clamping assembly. The clamping assembly includes two parallel and detachably connected clamping plates. One of the clamping plates has an extension plate connected to its top. The extension plate has a groove, and a sliding member connected to the lifting rope is slidably installed in the groove. A pin is provided between the clamping plates, and an eccentric clamping block is rotatably connected to the pin. A torsion spring is installed between the eccentric clamping block and the pin. The speed limiter wire rope is arranged between the two eccentric clamping blocks. The top of the eccentric clamping block is inclined towards the speed limiter wire rope. The position of the eccentric clamping block near its bottom is hinged to the sliding member through a connecting rod.

2. The speed limiter wire rope lifting device according to claim 1, characterized in that: The frame is set on the floor of the computer room near the speed limiter.

3. The speed limiter wire rope lifting device according to claim 1, characterized in that: The support frame includes a mounting plate, and a column is detachably and slidably connected to the side edge of the mounting plate. The bottom end of the column is mounted on the floor of the computer room via a base.

4. The speed limiter wire rope lifting device according to claim 3, characterized in that: The mounting plate has a first vertical elongated hole near the winch. The winch is detachably installed in the first vertical elongated hole by means of a spiral fastener. The winch is vertically adjustable along the first vertical elongated hole.

5. The speed limiter wire rope lifting device according to claim 3, characterized in that: Below the winch is a guide wheel mounted on a mounting plate via a bracket. The guide wheel is rotatably connected to the bracket. A second vertical elongated hole is provided on the mounting plate near the bracket. The bracket is detachably installed in the second vertical elongated hole via a spiral fastener. The bracket is vertically adjustable along the second vertical elongated hole.

6. The speed limiter wire rope lifting device according to claim 1, characterized in that: The winch can be a manual winch or an electric winch.

7. The speed limiter wire rope lifting device according to claim 1, characterized in that: The clamping plates are detachably connected by bolts, with both ends of the bolts passing through the two clamping plates and extending to the outside to connect with disc nuts.

8. The speed limiter wire rope lifting device according to claim 1, characterized in that: The top of the eccentric clamp is provided with an arc groove, and after the two eccentric clamps rotate, they clamp the speed limiter wire rope through the arc groove.

9. The speed limiter wire rope lifting device according to claim 1, characterized in that: The sliding member is located on the side of the extension plate away from the speed limiter wire rope. The two ends of the sliding member are bent towards the speed limiter wire rope. The two ends of the sliding member are provided with a stop bar on the outer wall near the speed limiter wire rope.

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