Limiting device for goods elevator without machine room

Abstract

The utility model provides a limiting device for a goods elevator without a machine room, and belongs to the technical field of elevators. The elevator limiting device solves the problem that an existing elevator limiting device is unstable. The utility model relates to a limiting device for a goods elevator without a machine room. The limiting device comprises a straight beam, a mounting plate, a mounting seat, a limiting rod and a limiting column, according to the utility model, after the limiting column is clamped in the locking groove or the unlocking groove, a worker can lock the limiting column on the mounting seat through a scheme of limiting the rotation of the limiting column through the locking nut or a scheme of pressing the rotation of the limiting column through the pressing plate, namely, the limiting column is prevented from being separated from the locking groove or the unlocking groove, so that the working efficiency is greatly improved. And when the limiting column is subjected to impact force, the limiting rod cannot be separated from the mounting seat, so that the limiting rod can be stably connected with the limiting plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevators and relates to a limit device for a machine-roomless freight elevator. Background Art

[0002] Today, with the increasingly rapid replacement of elevator market products, the maintenance and transformation of in-use old elevators gradually occupy a large share of the elevator market. Many old machine-roomless elevator products do not meet the acceptance requirements of the new national standard. For this reason, researchers designed a lock ladder structure on the car of the old machine-roomless elevator. For example, a limit device for a machine-roomless elevator car with the publication number of CN220245166U includes a straight beam, and the straight beam is connected to the car; a beam plate is installed on the straight beam, and a lock rod is movably penetrated through the straight beam. A first detector for monitoring the stop state of the lock rod is arranged on one side surface of the beam plate; a guide rail is arranged on one side of the straight beam and is not in contact with the straight beam. A back plate is installed on the side surface of the guide rail far from the straight beam. The lock rod can penetrate through the back plate. A second detector for monitoring the working state of the lock rod is arranged on the side surface of the back plate far from the guide rail. A lock frame is arranged on the beam plate, and the lock rod movably penetrates through both ends of the lock frame. Among them, one end of the lock frame is connected to the beam plate; at least two limit holes are formed in the lock rod, and a limit rod is penetrated through the lock frame, and one end of the limit rod is inserted into one of the limit holes; a fixing rod is arranged on the lock frame, and a spring is connected between the limit rod and the fixing rod. Although the above solution can limit the relative movement of the car with respect to the guide rail through the lock rod, there is only a spring to limit between the limit rod and the lock frame, and the spring can stretch. If the limit rod is subjected to a large impact or collision, the spring is extremely easy to be stretched, resulting in the limit rod disengaging from the lock frame, so that the lock rod cannot stably penetrate through the back plate, that is, the lock rod cannot stably lock the car; secondly, for a freight elevator with a large load, only one lock rod is provided in this solution. In this way, the weight of the freight elevator is extremely easy to break the lock rod, resulting in the abnormal use of the limit device. Summary of the Invention

[0003] The purpose of the utility model is to provide a limit device for a machine-roomless freight elevator that can stably limit the movement of the car by a lock rod in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved by the following technical solutions: A limit device for a machine-roomless freight elevator includes:

[0005] A straight beam is arranged on the freight elevator. An installation plate is installed on the straight beam. Installation seats are arranged at both ends of the installation plate. A limit rod is movably penetrated through each installation seat. A limit column is connected to the side surface of each limit rod, and the limit column can be locked on the installation seat.

[0006] In the above-mentioned limit device for a machine-roomless freight elevator, a locking groove and an unlocking groove are provided on the mounting seat, and the limit post can be stuck in the locking groove or the unlocking groove.

[0007] In the above-mentioned limit device for a machine-roomless freight elevator, the surface of the limit post has threads, and a locking nut is installed on the limit post.

[0008] In the above-mentioned limit device for a machine-roomless freight elevator, when the limit post is stuck in the locking groove or the unlocking groove, and there is an extrusion force between the locking nut and the mounting seat, the limit post is locked on the mounting seat.

[0009] In the above-mentioned limit device for a machine-roomless freight elevator, a pressing plate is rotatably installed on the mounting seat. One end of the pressing plate is provided with an insertion shaft. Shaft holes for inserting the insertion shaft are provided on both sides of the mounting seat. A fixing rod for connecting the pressing plate is provided on the mounting seat. The fixing rod is located at the central position between the locking groove and the unlocking groove. Elastic blocks for pressing the limit post are provided on both side edges of the pressing plate.

[0010] In the above-mentioned limit device for a machine-roomless freight elevator, when the limit post is stuck in the locking groove or the unlocking groove, the elastic block on the pressing plate presses the limit post, and the insertion shaft passes through the adjacent shaft hole, the limit post is locked on the mounting seat.

[0011] In the above-mentioned limit device for a machine-roomless freight elevator, a first bolt is passed through the mounting seat. A first spring is installed between the first bolt and the limit post. A first nut is installed at the end of the first bolt.

[0012] In the above-mentioned limit device for a machine-roomless freight elevator, a second bolt is passed through one end of the mounting seat. A second spring is installed between the second bolt and the side surface of the limit rod. A second nut is installed at the end of the second bolt.

[0013] In the above-mentioned limit device for a machine-roomless freight elevator, trigger switches equal in number to the limit rods are provided on the mounting plate. Each trigger switch is provided with a trigger head, and each limit rod is provided with a slotted groove.

[0014] In the above-mentioned limit device for a machine-roomless freight elevator, a guide rail is provided on one side of the straight beam. A limit plate is provided on the guide rail. A limit hole for the limit rod to pass through is opened on the limit plate. The limit plate and the guide rail are connected by a plurality of pressure guide plates.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] 1. In the present utility model, by arranging two limiting rods to pass through the limiting plate, the connection strength between the freight elevator and the guide rail is further improved, so as to be applicable to freight elevators with large load capacity.

[0017] 2. In the present utility model, after the limiting column is stuck in the locking groove or the unlocking groove, the staff can lock the limiting column on the mounting seat by means of the scheme of restricting the rotation of the limiting column through the locking nut or the scheme of pressing the limiting column to rotate through the pressing plate, that is, to prevent the limiting column from disengaging from the locking groove or the unlocking groove. Thus, when the limiting column is subjected to an impact force, the limiting rod cannot disengage from the mounting seat, thereby ensuring that the limiting rod can be stably connected to the limiting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a preferred embodiment of the present utility model.

[0019] Figure 2 is an assembly drawing of the guide rail and the limiting plate.

[0020] Figure 3 is Figure 1 a schematic structural diagram after removing the guide rail and the limiting plate.

[0021] Figure 4 is an assembly drawing of the mounting seat and the limiting rod.

[0022] Figure 5 is a schematic structural diagram of restricting the rotation of the limiting column by the locking nut.

[0023] Figure 6 is a schematic structural diagram of pressing the limiting column to rotate by the pressing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following are specific embodiments of the present utility model in combination with the drawings, and the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0025] As Figure 1 — Figure 6 shown, a limiting device for a machine-roomless freight elevator of the present utility model includes a straight beam 100, a mounting plate 110, a mounting seat 200, a limiting rod 210, and a limiting column 211.

[0026] The straight beam 100 is provided on the freight elevator. An installation plate 110 is installed on the straight beam 100. Installation seats 200 are provided at both ends of the installation plate 110. A limiting rod 210 is movably penetrated through each installation seat 200. A limiting column 211 is connected to the side surface of each limiting rod 210. The limiting column 211 can be locked on the installation seat 200. A locking groove 220 and an unlocking groove 230 are provided on the installation seat 200. The limiting column 211 can be stuck in the locking groove 220 or the unlocking groove 230. Trigger switches 120 with the same number as the limiting rods 210 are provided on the installation plate 110. Each trigger switch 120 is provided with a trigger head 121. Each limiting rod 210 is provided with a slot 212. A guide rail 500 is provided on one side of the straight beam 100. A limiting plate 510 is provided on the guide rail 500. A limiting hole 511 for the limiting rod 210 to pass through is opened on the limiting plate 510. The limiting plate 510 and the guide rail 500 are connected by a plurality of pressure guide plates 520. When the limiting device is not in use, the limiting column 211 is stuck in the unlocking groove 230, and the limiting column 211 is locked on the installation seat 200. The trigger head 121 of the trigger switch 120 is located in the slot 212. When the freight elevator moves along the guide rail 500, the limiting rod 210 will not move relative to the installation seat 200, so as to ensure the normal operation of the freight elevator. When the staff needs to repair the freight elevator, the freight elevator needs to be run to a designated position, and each limiting rod 210 can be aligned with the corresponding limiting hole 511 on the limiting plate 510. After that, the staff needs to unlock the limiting column 211 first so that the limiting column 211 can be removed from the unlocking groove 230. After that, during this process, the limiting rod 210 is connected to the limiting column 211. In this way, the staff can push the limiting column 211 to drive the limiting rod 210 to move towards the limiting plate 510 until the two limiting rods 210 are inserted into the corresponding limiting holes 511. In this way, the limiting plate 510 and the installation seat 200 will be connected together through the limiting rod 210. The installation seat 200 is connected to the straight beam 100 of the freight elevator through the installation plate 110. The limiting plate 510 is installed on the guide rail 500 through a plurality of pressure guide plates 520. The connection between the freight elevator and the guide rail 500 through the limiting rod 210 can be realized, so as to limit the lifting of the freight elevator relative to the guide rail 500. After that, the staff locks the limiting column 211 on the installation seat 200 to prevent the limiting column 211 from disengaging from the locking groove 220, so as to prevent the limiting rod 210 from moving relative to the installation seat 200 at this time; during this process, the trigger head 121 moves out of the slot 212 and contacts the side surface of the limiting rod 210. Because the trigger switch 120 is electrically connected to the control system of the elevator, the control system controls each electrical component of the freight elevator to stop working, so as to achieve that the elevator no longer has power to lift relative to the guide rail 500, so as to ensure that the freight elevator is always in a stagnant state when the staff repairs the freight elevator.

[0027] Further, by arranging two limiting rods 210 to pass through the limiting plate 510, the connection strength between the freight elevator and the guide rail 500 is further improved, so as to be applicable to freight elevators with large load capacity.

[0028] During the process that the limiting post 211 transfers from the unlocking groove 230 to the locking groove 220 or from the locking groove 220 to the unlocking groove 230, the limiting post 211 is always connected to the limiting rod 210.

[0029] A first bolt 260 passes through the mounting seat 200, and a first spring 261 is installed between the first bolt 260 and the limiting post 211. Through the arrangement of the first spring 261, there is always a certain elastic force between the limiting post 211 and the first bolt 260, so that the limiting post 211 is not easily detached from the unlocking groove 230 or the locking groove 220; a first nut 262 is installed at the end of the first bolt 260. Through the arrangement of the first nut 262, the first spring 261 is not easily detached from the end of the first bolt 260.

[0030] A second bolt 270 passes through one end of the mounting seat 200, and a second spring 271 is installed between the second bolt 270 and the side surface of the limiting rod 210. When the limiting post 211 moves from the unlocking groove 230 towards the locking groove 220, the second spring 271 will generate an elastic force. After the limiting post 211 is detached from the locking groove 220, the elastic force between the second spring 271 and the limiting rod 210 will pull the limiting rod 210 to move, so that people can easily transfer the limiting post 211 from the locking groove 220 to the unlocking groove 230, thus achieving the effect of saving effort; a second nut 272 is installed at the end of the second bolt 270. Through the arrangement of the second nut 272, the second spring 271 can be prevented from detaching from the end of the second bolt 270.

[0031] As Figure 5 shown, the following is the first scheme for locking the limiting post 211 on the mounting seat 200:

[0032] The surface of the limiting post 211 has threads, and a locking nut 300 is installed on the limiting post 211. When the limiting post 211 is stuck in the locking groove 220 or the unlocking groove 230, since the limiting post 211 is always connected to the limiting rod 210 and the limiting rod 210 movably passes through the mounting seat 200, the limiting post 211 can only rotate around the limiting rod 210 at this time. After that, the staff tightens the locking nut 300 and makes there be an extrusion force between the locking nut 300 and the mounting seat 200. At this time, the locking nut 300 will limit the rotation of the limiting post 211 around the limiting rod 210, so that the limiting post 211 can be stably stuck in the locking groove 220 or the unlocking groove 230, that is, the limiting post 211 is locked on the mounting seat 200.

[0033] As Figure 6 shown, the following is the second solution for locking the limit post 211 on the mounting base 200:

[0034] A pressing plate 400 is rotatably mounted on the mounting base 200. One end of the pressing plate 400 is provided with an insertion shaft 410. Shaft holes 240 for inserting the insertion shaft 410 are provided on both sides of the mounting base 200. A fixing rod 250 for connecting the pressing plate 400 is provided on the mounting base 200. The fixing rod 250 is located at the central position between the locking groove 220 and the unlocking groove 230. Elastic blocks 420 for pressing the limit post 211 are provided on both side edges of the pressing plate 400. When the limit post 211 is stuck in the locking groove 220 or the unlocking groove 230, since the limit post 211 is always connected to the limit rod 210 and the limit rod 210 movably passes through the mounting base 200, the limit post 211 can only rotate around the limit rod 210 at this time. After that, the staff rotates the pressing plate 400 until one of the elastic blocks 420 on the pressing plate 400 presses the limit post 211 and the insertion shaft 410 on the pressing plate 400 is aligned with the shaft hole 240 adjacent to the limit post 211, and one end of the insertion shaft 410 is passed through the shaft hole 240. In this way, there is a squeezing force between the pressing plate 400 and the limit post 211, so that the limit post 211 can be stably stuck in the locking groove 220 or the unlocking groove 230, that is, the limit post 211 is locked on the mounting base 200, which is also convenient for people to operate.

[0035] Furthermore, the part of the pressing plate 400 in contact with the limit post 211 is the elastic block 420, and the elastic block 420 itself has good elasticity. Therefore, the squeezing force between the pressing plate 400 and the limit post 211 will be absorbed by the elastic block 420 and converted into elastic force. At the same time, under the action of this elastic force, the pressing plate 400 has a tendency to rotate away from the limit post 211, so that there is a shearing force between the pressing plate 400 and the mounting base 200. Since one end of the insertion shaft 410 is always connected to the pressing plate 400 and the other end of the insertion shaft 410 passes through the shaft hole 240 on the mounting base 200, there is a squeezing force between the insertion shaft 410 and the inner wall of the shaft hole 240, thereby improving the connection strength between the insertion shaft 410 and the shaft hole 240.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, in the present utility model, descriptions such as "first", "second", "one", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0038] In the present utility model, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

Claims

1. A limit device for a machine-roomless goods lift, characterized in that, Comprising: a straight beam, provided on the freight elevator, an installation plate is installed on the straight beam, installation seats are provided at both ends of the installation plate, a limiting rod is movably inserted through each installation seat, a limiting column is connected to the side surface of each limiting rod, and the limiting column can be locked on the installation seat.

2. The limit device for a machine-room-less freight elevator according to claim 1, characterized in that, The installation seat is provided with a locking groove and an unlocking groove, and the limiting column can be stuck in the locking groove or the unlocking groove.

3. The limit device for a machine-room-less freight elevator according to claim 2, wherein, The surface of the limiting column has threads, and a locking nut is installed on the limiting column.

4. A limit device for a machine-room-less freight elevator according to claim 3, characterized in that, When the limiting column is stuck in the locking groove or the unlocking groove, and there is an extrusion force between the locking nut and the installation seat, the limiting column is locked on the installation seat.

5. The limit device for a machine-room-less freight elevator according to claim 2, characterized in that, A pressing plate is rotatably installed on the installation seat, a plug shaft is provided at one end of the pressing plate, shaft holes for inserting the plug shaft are provided on both sides of the installation seat, a fixing rod for connecting the pressing plate is provided on the installation seat, the fixing rod is located at the central position between the locking groove and the unlocking groove, and elastic blocks for pressing the limiting column are provided on both side edges of the pressing plate.

6. The limit device for a machine-room-less freight elevator according to claim 5, characterized in that, When the limiting column is stuck in the locking groove or the unlocking groove, the elastic block on the pressing plate presses the limiting column and the plug shaft passes through the adjacent shaft hole, the limiting column is locked on the installation seat.

7. A limit device for a machine-room-less freight elevator according to claim 1, characterized in that, A first bolt is inserted through the installation seat, a first spring is installed between the first bolt and the limiting column, and a first nut is installed at the end of the first bolt.

8. A limit device for a machine-roomless freight elevator according to claim 1, characterized in that, A second bolt is inserted through one end of the installation seat, a second spring is installed between the second bolt and the side surface of the limiting rod, and a second nut is installed at the end of the second bolt.

9. The limit device for a machine-room-less freight elevator according to claim 1, wherein, Trigger switches with the same number as the limiting rods are provided on the installation plate, each trigger switch is provided with a trigger head, and each limiting rod is provided with a slotted opening.

10. A limit device for a machine-roomless freight elevator according to claim 1, characterized in that, A guide rail is provided on one side of the straight beam, a limiting plate is provided on the guide rail, a limiting hole for the limiting rod to pass through is opened on the limiting plate, and the limiting plate and the guide rail are connected by a plurality of pressure guide plates.

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