Machine-room-free mechanical lock ladder structure

Abstract

The utility model relates to the technical field of elevators, in particular to a mechanical elevator locking structure without a machine room, which is fixed on an upper beam of an elevator car, a guide rail is arranged at the front end of the upper beam, the elevator locking structure comprises an elevator locking plate, the elevator locking plate is fixedly mounted on the back of the guide rail, and a lock hole is formed in the elevator locking plate; the ladder locking seat is fixedly installed on the side face of the upper beam, through holes are formed in the front end face and the rear end face of the ladder locking seat, and a U-shaped sliding groove is formed in the ladder locking seat; the ladder locking shaft is arranged in the through hole of the ladder locking seat in a penetrating manner, one end of the ladder locking shaft extends out towards the lock hole of the ladder locking plate, the other end of the ladder locking shaft is fixedly connected with a switch mounting plate, and a UKS switch is fixedly mounted on the switch mounting plate; the deflector rod is fixedly mounted on the peripheral side surface of the ladder locking shaft, and the outward end part of the deflector rod is inserted into the U-shaped sliding chute. The two ends of the lock ladder shaft are the same in size and can be obtained by directly cutting round steel, turning is not needed, the lock ladder shaft can be fixedly connected with other parts only through drilling and tapping, site construction is more convenient, the assembly efficiency is better and simpler, and the problem that an existing structure is complex is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, and in particular to a machine room-less mechanical elevator lock structure. Background Art

[0002] Referring to the patent document with application number CN2020229862356, a machine room-less ladder locking device is disclosed, including a ladder locking structure, which includes a ladder locking seat, a ladder locking shaft, a ladder locking plate, a pull rod, a cotter pin, a safety switch, and a switch seat; the switch seat is installed above the ladder locking seat, and the safety switch is installed on the switch seat. The ladder locking shaft can be laterally moved below the ladder locking seat, and the ladder locking plate is connected to one end of the ladder locking shaft; the other end of the ladder locking shaft passes through the other end of the ladder locking seat, and a first positioning hole and a second positioning hole are provided on the ladder locking shaft. One end of the pull rod passes through the ladder locking seat and can be plugged and removably positioned in the first positioning hole, and the cotter pin can be plugged and removably positioned in the second positioning hole.

[0003] This type of ladder lock device has the following problems. First, the ladder lock shaft is a two-section structure, one section has a diameter of 25, and the other section has a diameter of 30. There is an inclined step at the connection between the two sections. The shaft needs to be turned, which has low production efficiency and high cost. Second, the ladder lock shaft needs to be inserted into the ladder lock seat. Therefore, the ladder lock seat uses channel steel punching. The holes on both sides are of different sizes. A large punching machine and mold punching are required. The mold needs to be repeatedly installed and disassembled, which has a high risk factor and low work efficiency. Third, the switch is fixed to the ladder lock seat through a bracket. The switch is triggered when the inclined step of the ladder lock shaft reciprocates, causing the elevator to disconnect the safety circuit. The ladder lock shaft continues to be pulled to the outside of the upper beam until the ladder lock shaft is inserted into the ladder lock plate. At this time, the distance between the large shaft and the switch is small, and the switch does not have enough position to reset. Therefore, the ladder lock structure in the prior art has the problems of complex structure and difficult assembly. Utility Model Content

[0004] The utility model aims to provide a machine room-less mechanical ladder lock structure to address the deficiencies in the prior art. The structure can solve the problems of complex structure and difficult assembly.

[0005] The purpose of the utility model is achieved through the following technical solutions: the application provides a machine room-less mechanical ladder locking structure, which is fixed on the upper beam of the elevator car, and a guide rail is provided at the front end of the upper beam. The ladder locking structure includes a ladder locking plate, which is fixedly mounted on the back side of the guide rail, and the ladder locking plate is provided with a locking hole; a ladder locking seat, which is fixedly mounted on the side of the upper beam, and the front and rear end faces of the ladder locking seat are both provided with through holes, and the side of the ladder locking seat is provided with a U-shaped slide groove; a ladder locking shaft, which is rotatably inserted into the through hole of the ladder locking seat, one end of the ladder locking shaft extends toward the locking hole of the ladder locking plate, and the other end is fixedly connected to a switch mounting plate, and the switch mounting plate is fixedly installed with a UKS switch; a lever, which is fixedly mounted on the outer peripheral side of the ladder locking shaft, and the outward end of the lever is inserted into the U-shaped slide groove.

[0006] Among them, the U-shaped slide groove is provided with a transverse section and longitudinal sections respectively arranged at both ends of the transverse section. A baffle is also fixedly installed on the side of the ladder lock seat, and the baffle is fixedly installed at the longitudinal section close to the ladder lock plate to form a slot in the longitudinal section.

[0007] Wherein, the switch mounting plate is arranged in an L shape.

[0008] Among them, the ladder lock shaft is a columnar body with the same cross-sectional area.

[0009] The aperture of the through hole on the front end surface of the ladder lock seat is the same as the aperture of the through hole on the rear end surface of the ladder lock seat.

[0010] The utility model has the following beneficial effects:

[0011] The overall structure is simple and compact, the assembly is convenient, the production efficiency is high and the assembly is not prone to errors.

[0012] The two ends of the lock ladder shaft are the same size and can be obtained by directly cutting round steel. No turning is required. Only drilling and tapping are required to fix them with other parts. On-site construction is more convenient and assembly efficiency is better and simpler, which solves the problem of complex structure in the past.

[0013] The through holes on the front and rear ends of the ladder lock seat are of the same size, so there is no need to distinguish between the left and right directions. The processing and assembly efficiency is higher and there will be no assembly errors.

[0014] By setting the UKS switch to be linked with the ladder lock shaft, when the ladder lock shaft lever is pulled upward, the UKS switch rotates with the ladder lock shaft and collides with the side of the upper beam, triggering the switch and disconnecting the elevator safety circuit. Since the ladder lock seat is provided with a U-shaped slide, the ladder lock shaft continues to move along the slide. After the ladder lock shaft is inserted into the lock hole of the ladder lock plate, the lever is placed in the slot above the baffle. The ladder lock shaft cannot rotate downward, the switch is always in the open state and cannot be reset, the elevator safety circuit is always disconnected, and the elevator cannot be used, ensuring the safety of the locked ladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the utility model. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0016] Figure 1 Schematic diagram of the structure of the ladder lock structure in the embodiment.

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0018] Figure 3Schematic diagram of the structure of the ladder lock structure after hiding the upper beam, guide rails and ladder lock plate in the embodiment.

[0019] Figure numerals: upper beam 11, guide rail 12, ladder lock plate 2, lock hole 21, ladder lock seat 3, U-shaped slide groove 31, card slot 32, ladder lock shaft 4, switch mounting plate 51, UKS switch 52, lever 6, baffle 7. Implementation

[0020] The utility model is further described in conjunction with the following embodiments.

[0021] A specific implementation method of a machine room-less mechanical ladder lock structure of the utility model is as follows: Figure 1 and Figure 2 As shown, the ladder lock structure is fixed on the side of the upper beam 11 of the elevator car, and a guide rail 12 is provided at the front end of the upper beam 11. The upper beam 11 can slide back and forth in the height direction relative to the slide rail. A ladder lock plate 2 is fixedly installed on the back of the guide rail 12, and a lock hole 21 is opened on the ladder lock plate 2. In order to facilitate the insertion of the ladder lock shaft 4 into the lock hole 21 of the ladder lock plate 2, the lock hole 21 is set as a long strip hole.

[0022] In this embodiment, the ladder lock structure includes a ladder lock seat 3, a ladder lock shaft 4, a lever 6, a baffle 7, a switch mounting plate 51 and a UKS switch 52. The ladder lock seat 3 is fixedly mounted on the side of the upper beam 11, and the front and rear faces of the ladder lock seat 3 are both provided with through holes for inserting the ladder lock shaft 4. The ladder lock shaft 4 is rotatably inserted into the through hole of the ladder lock seat 3, and one end of the ladder lock shaft 4 extends toward the lock hole 21 of the ladder lock plate 2, and the other end is fixedly connected to the switch mounting plate 51, and the switch mounting plate 51 is fixedly mounted with the UKS switch 52. In this way, when the ladder lock shaft 4 rotates around its central axis, the UKS switch 52 will also rotate with the ladder lock shaft 4. In addition, the lever 6 is fixedly mounted on the outer peripheral side of the ladder lock shaft 4, and the outer peripheral side of the ladder lock shaft 4 can be threadedly connected with the lever 6 by drilling and tapping.

[0023] As an improvement, combined with Figure 2 A U-shaped slot 31 is provided on the side of the ladder lock seat 3, and the outward end of the lever 6 is inserted into the U-shaped slot 31. The U-shaped slot 31 is provided with a transverse section and longitudinal sections respectively arranged at both ends of the transverse section. The baffle 7 is fixedly installed on the side of the ladder lock seat 3, and the baffle 7 covers the longitudinal section of the U-shaped slot 31 close to the ladder lock plate 2. The width of the baffle 7 is smaller than the length of the longitudinal section, so that a slot 32 for accommodating the lever 6 is formed in the longitudinal section.

[0024] Combination Figure 3The use process of a machine room-less mechanical ladder lock structure of the utility model is as follows: by setting a UKS switch 52 to be linked with the ladder lock shaft 4, when the ladder lock shaft 4 is pulled upward, the UKS switch 52 rotates with the ladder lock shaft 4 and collides with the side of the upper beam 11, triggering the switch to disconnect the elevator safety circuit. Since the ladder lock seat 3 is provided with a U-shaped slide 31 and a baffle 7, the ladder lock shaft 4 continues to move along the lateral section of the slide. After the ladder lock shaft 4 is inserted into the lock hole 21 of the ladder lock plate 2, the pull rod slides into and is placed on the card slot 32 above the baffle. The ladder lock shaft 4 cannot rotate downward and cannot be retracted. The switch is always in the open state and cannot be reset. The elevator safety circuit is always disconnected, and the elevator cannot be used, ensuring the safety of the ladder lock. In this embodiment, the switch mounting plate 51 is set in an L shape, which is more convenient for the manufacture of the switch mounting plate 51 and the assembly of the UKS switch 52.

[0025] In this embodiment, the ladder lock shaft 4 is a columnar body with the same cross-sectional area, that is, the sizes of the front and rear ends of the ladder lock shaft 4 are the same. In addition, the through hole diameter of the front end face of the ladder lock seat 3 is the same as the through hole diameter of the rear end face of the ladder lock seat 3.

[0026] The utility model discloses a mechanical ladder lock structure without a machine room, which has a simple and compact overall structure, is easy to assemble, has high production efficiency and is not prone to assembly errors. The two ends of the ladder lock shaft 4 are the same size and can be obtained by directly cutting round steel. No turning is required. Only drilling and tapping are required to fix with other parts. On-site construction is more convenient, and assembly efficiency is better and simpler, solving the problem of complex structures in the past. The through holes on the front and rear end surfaces of the ladder lock seat 3 are of the same size, and there is no need to distinguish between left and right directions. The processing and assembly efficiency is higher, and assembly errors will not occur.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A machine room-less mechanical elevator lock structure, which is fixed to the upper beam of the elevator car, and a guide rail is provided at the front end of the upper beam, characterized in that: The ladder lock structure comprises: A ladder locking plate, which is fixedly mounted on the back of the guide rail and has a locking hole; A ladder lock seat is fixedly mounted on the side of the upper beam, the front end face and the rear end face of the ladder lock seat are both provided with through holes, and the side of the ladder lock seat is provided with a U-shaped sliding groove; A ladder lock shaft is rotatably inserted into the through hole of the ladder lock seat, one end of the ladder lock shaft extends toward the lock hole of the ladder lock plate, and the other end is fixedly connected to a switch mounting plate, and a UKS switch is fixedly mounted on the switch mounting plate; A shift rod is fixedly mounted on the outer peripheral side of the ladder locking shaft, and the outward end of the shift rod is inserted into the U-shaped sliding groove.

2. The machine room-less mechanical ladder lock structure according to claim 1 is characterized in that: The U-shaped slide groove is provided with a transverse section and longitudinal sections respectively arranged at both ends of the transverse section. A baffle is also fixedly installed on the side of the ladder lock seat. The baffle is fixedly installed at the longitudinal section close to the ladder lock plate so that the longitudinal section forms a slot.

3. The machine room-less mechanical ladder lock structure according to claim 1 is characterized in that: The switch mounting plate is arranged in an L shape.

4. The machine room-less mechanical ladder lock structure according to claim 1 is characterized in that: The ladder lock shaft is a columnar body with the same cross-sectional area.

5. The machine room-less mechanical ladder lock structure according to claim 1 is characterized in that: The aperture of the through hole on the front end surface of the ladder lock seat is the same as the aperture of the through hole on the rear end surface of the ladder lock seat.

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