Steel wire rope lifting rod in elevator speed limiting device
By using a combination of rod mounting holes and threaded holes in the elevator speed limiter, the problem of large space occupation for wire rope fixing is solved, and the installation is simplified and the shaft compactness is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 苏州大名府电梯有限公司
- Filing Date
- 2025-04-17
- Publication Date
- 2026-04-17
AI Technical Summary
In existing elevator speed limiting devices, the method of fixing steel wire ropes occupies a large amount of shaft space, which limits the compactness of shaft design.
The pole body is equipped with mounting holes and threaded holes at both ends. The steel wire rope is fixed to the pole body by a combination of set screws and positioning holes, which simplifies the installation process, ensures that the steel wire rope is straight with the pole body, and occupies little space.
This allows for easy fixing of the wire rope, improves installation efficiency, reduces the space required for shaft design, and maintains the compactness of the shaft.
Smart Images
Figure CN224132484U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of elevators, and in particular to the steel wire rope lifting rod in elevator speed limiting devices. Background Technology
[0002] Elevator speed limiting devices are used to ensure elevator safety. The structure of such devices is as follows: speed limiting wheels are installed at the top and bottom of the shaft, and a steel wire rope is wound between the two wheels. Both ends of the steel wire rope are fixed to the elevator car. This steel wire rope is secured to the elevator car using a combination of a boutonniere and rope clamps. This connection structure requires the two ends of the steel wire rope to be wound around the top and bottom of the boutonniere, respectively, and then the rope clamps are used to hold the ends of the steel wire rope in place. This method of fixing the steel wire rope around the boutonniere results in a large bending radius for the boutonniere, occupying a large shaft opening and limiting the compactness of the shaft design. Utility Model Content
[0003] The purpose of this invention is to provide a wire rope lifting rod for an elevator speed limiting device that is small in size, simple in structure, and easy to install.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a wire rope lifting rod in an elevator speed limiting device includes: a rod body, with mounting holes coaxial with the rod body at both ends, the diameter of the mounting holes being larger than the diameter of the wire rope; an equal number of threaded holes on the side walls at both ends of the rod body, the threaded holes communicating with the mounting holes; the number of threaded holes at both ends of the rod body is not less than three, and set screws are threadedly connected in the threaded holes; an equal number of positioning holes are also provided on the side walls at both ends of the rod body, each positioning hole communicating with the mounting hole at the same end, each positioning hole being coaxially aligned with a threaded hole at the same end, and the diameter of the positioning hole being larger than the diameter of the mounting hole and the threaded hole.
[0005] Furthermore, in the aforementioned elevator speed limiting device, the steel wire rope lifting rod has a connecting part milled on the rod body, a connecting hole is provided at the center of the connecting part, and two mounting holes are located on both sides of the connecting part and are symmetrically arranged.
[0006] Furthermore, in the aforementioned elevator speed limiting device, the diameter of the mounting hole in the wire rope lifting rod is 0.8 to 1.2 mm larger than the outer diameter of the wire rope.
[0007] Furthermore, in the aforementioned elevator speed limiting device, the wire rope lifting rod has one more threaded hole at one end than the number of positioning holes at that end. The extra threaded hole is close to the open end of the mounting hole, and the diameter of the positioning hole close to the closed end of the mounting hole is smaller than the diameter of the other positioning holes at the same end, while the diameters of the other positioning holes at the same end are the same.
[0008] Furthermore, in the aforementioned elevator speed limiting device, the diameter of the positioning hole near the closed end of the mounting hole is 1.8 to 2.2 mm larger than the outer diameter of the wire rope, and the diameter of other positioning holes at the same end is 2.8 to 3.2 mm larger than the outer diameter of the wire rope.
[0009] Furthermore, in the aforementioned elevator speed limiting device, the wire rope lifting rod has an arc-shaped top on the set screw.
[0010] The advantages of this utility model are: simple structure, the wire rope can be fixed to the pole by screwing the set bolt into the mounting hole and cooperating with the positioning hole, which simplifies the installation and improves the installation efficiency. When the two ends of the wire rope are fixed to the two ends of the pole, the straightened wire rope is in a straight line with the pole. In this way, only a small space is needed to place the pole, which does not restrict the compactness of the shaft design. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the steel wire rope lifting rod in the elevator speed limiting device described in this utility model.
[0012] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure along the AA direction.
[0013] Figure 3 This is a schematic diagram of the structure of the steel wire rope fixed in the steel wire rope lifting rod. Detailed Implementation
[0014] The technical solution of this utility model will be further described below with reference to the accompanying drawings and preferred embodiments.
[0015] like Figures 1-3As shown, the steel wire rope lifting rod in the elevator speed limiting device of this utility model includes: a rod body 1, a connecting part 11 milled on the rod body 1, a connecting hole 12 provided at the center of the connecting part 11, two mounting holes 13 symmetrically arranged on the rod body 1 at both ends of the connecting part 11 and coaxial with the rod body 1, the diameter of the mounting hole 13 being 0.8-1.2mm larger than the outer diameter of the steel wire rope, the same number of threaded holes provided on the side walls of both ends of the rod body 1, the threaded holes communicating with the mounting holes 13, the number of threaded holes at both ends of the rod body 1 being no less than three, a set screw 2 threadedly connected in the threaded hole, the set screw 2 having an arc-shaped top, and the same number of positioning holes 14 also provided on the side walls of both ends of the rod body 1, each positioning hole... All positioning holes 14 are connected to mounting holes 13 at the same end. Each positioning hole 14 is coaxially aligned with a threaded hole at the same end. The diameter of the positioning hole 14 is larger than the diameter of the mounting hole 13 and the threaded hole. The number of threaded holes at one end of the rod body 1 is one more than the number of positioning holes 14 at that end. The threaded holes that are not aligned with the positioning holes 14 are close to the open end of the mounting hole 13. The diameter of the positioning hole 14 close to the closed end of the mounting hole 13 is smaller than the diameter of the other positioning holes 14 at the same end. The diameter of the positioning hole 14 close to the closed end of the mounting hole 13 is 1.8 to 2.2 mm larger than the outer diameter of the wire rope. The diameters of the other positioning holes 14 at the same end are the same. The diameters of the other positioning holes 14 at the same end are 2.8 to 3.2 mm larger than the outer diameter of the wire rope. When there are only two positioning holes 14 at one end of the rod body 1, the diameter of the positioning hole 14 near the closed end of the mounting hole 13 is 1.8 to 2.2 mm larger than the outer diameter of the wire rope, and the diameter of the other positioning hole 14 at the same end is 2.8 to 3.2 mm larger than the outer diameter of the wire rope. When there are three or more positioning holes 14 at one end of the rod body 1, the diameter of the positioning hole 14 near the closed end of the mounting hole 13 is 1.8 to 2.2 mm larger than the outer diameter of the wire rope, and the diameters of the other positioning holes 14 at the same end are all 2.8 to 3.2 mm larger than the outer diameter of the wire rope.
[0016] In this embodiment, when the diameter of the steel wire rope used in the elevator is 8mm, the diameter of the mounting hole 13 is between 8.8 and 9.2mm, preferably 9mm. Three threaded holes and two positioning holes 14 are respectively provided on the side walls of both ends of the rod body 1. Set screws 2 are threaded into each of the three threaded holes. In this embodiment, the diameter of the set screw 2 is 6mm, i.e., an M6 type set screw. The two positioning holes 14 are coaxially aligned with the two threaded holes at the same end. The diameter of the positioning hole 14 near the closed end of the mounting hole 13 is smaller than that of the other positioning hole 14. The diameter of the positioning hole 14 near the closed end of the mounting hole 13 is 9.8 to 10.2mm, preferably 10mm in this embodiment. The diameter of the remaining positioning hole 14 is 10.8 to 11.2mm, preferably 11mm in this embodiment. The threaded hole that is not aligned with the positioning hole 14 is close to the open end of the mounting hole 13, and the set screw 2 in the threaded hole is directly opposite the inner wall of the mounting hole 13. When installing the wire rope, first use bolts to pass through the connecting holes 12 on the connecting part 11 and connect it to the elevator car, so that the rod body 1 is in a vertical state. Then, insert both ends of the wire rope into the two mounting holes 13 on the rod body 1 respectively. Then, tighten the set screw 2 in the threaded hole near the closed end of the mounting hole 13. The set screw 2 will push the wire rope. Because the arc-shaped top of the set screw 2 abuts against the wire rope and pushes it, the wire rope will be squeezed into the positioning hole 14 with a diameter of 10mm in an arc shape. The arc-shaped top of the set screw 2 will not damage the wire rope when pushing it. Because the diameter of the positioning hole 14 near the closed end of the mounting hole 13 is small, the wire rope will only be squeezed into the positioning hole 14 and will not be squeezed out, which would affect the aesthetics and safety. In this way, the end of the wire rope is fixed. Then tighten the set screw in the threaded hole in the middle. Screw 2 pushes the wire rope into another positioning hole 14 with a diameter of 11mm. Due to the large diameter of the positioning hole 14, a large amount of wire rope will be squeezed into the positioning hole 14. The large-diameter positioning hole 14, together with the set screw 2, fixes the wire rope. Finally, the set screw 2 in the threaded hole near the opening end of the mounting hole 13 is tightened. Since the wire rope will bend in the mounting hole 13 after being squeezed into the large-diameter positioning hole 14, the set screw 2 in the threaded hole near the opening end of the mounting hole 13 can be tightened to make the wire rope fit against the mounting hole 13 and extend straight out of the rod body 1. After the two ends of the wire rope are fixed in the mounting holes 13 at both ends of the rod body 1, the straightened wire rope is in a straight line with the rod body 1. In this way, only a small space is needed to place the rod body 1, which does not restrict the compactness of the shaft design.
[0017] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.
Claims
1. A steel wire rope pull rod in an elevator speed limiter device, comprising: The rod body is characterized by: mounting holes coaxial with the rod body at both ends, the diameter of the mounting holes being larger than the diameter of the wire rope; an equal number of threaded holes on the side walls at both ends of the rod body, the threaded holes communicating with the mounting holes; at least three threaded holes at each end of the rod body; set screws threadedly connected to the threaded holes; and an equal number of positioning holes on the side walls at both ends of the rod body, each positioning hole communicating with the mounting hole at the same end; each positioning hole being coaxially aligned with a threaded hole at the same end; and the diameter of the positioning hole being larger than the diameter of the mounting hole and the threaded hole.
2. A steel wire rope pull rod in an elevator speed limiting device according to claim 1, characterized in that A connecting part is milled on the rod body, and a connecting hole is provided at the center of the connecting part. Two mounting holes are located on both sides of the connecting part and are arranged symmetrically.
3. A steel wire rope pull rod in an elevator speed limiting device according to claim 1, characterized in that: The diameter of the mounting hole is 0.8 to 1.2 mm larger than the outer diameter of the wire rope.
4. A steel wire rope pull rod in an elevator speed limiting device according to claim 1, characterized by: The number of threaded holes at one end of the rod is one more than the number of positioning holes at that end. The extra threaded hole is close to the open end of the mounting hole. The diameter of the positioning hole close to the closed end of the mounting hole is smaller than the diameter of the other positioning holes at the same end. The diameters of the other positioning holes at the same end are the same.
5. The wire rope lifting rod in the elevator speed limiting device according to claim 4, characterized in that: The diameter of the positioning hole near the closed end of the mounting hole is 1.8 to 2.2 mm larger than the outer diameter of the wire rope, and the diameter of other positioning holes at the same end is 2.8 to 3.2 mm larger than the outer diameter of the wire rope.
6. A steel wire rope pull rod in an elevator speed limiting device according to claim 1, characterized by: An arc-shaped dot is provided on the set screw.