WO2023015694A1

WO2023015694A1 - Locking apparatus and lifting/lowering device

Info

Publication number: WO2023015694A1
Application number: PCT/CN2021/121693
Authority: WO
Inventors: 张庆伟; 张国柱
Original assignee: 中际联合（北京）科技股份有限公司
Priority date: 2021-08-11
Filing date: 2021-09-29
Publication date: 2023-02-16
Also published as: CN113683029B; CN113683029A

Abstract

The present application provides a locking apparatus and a lifting/lowering device. The locking apparatus comprises a body, a locking member, and an unlocking member; the body is located on the lifting/lowering device, and the locking member and the unlocking member are respectively mounted on the body; the locking apparatus locks the lifting/lowering device by means of the locking member, and unlocks the lifting/lowering device by means of the unlocking member. In the present application, the lifting/lowering device is convenient for a limiting operation, is time-saving and labor-saving, can adapt to mechanical limiting under various conditions, and is stable and reliable in operation.

Description

Locking device and lifting equipment

Cross References to Related Applications

This application claims the priority of the Chinese patent application with the application number 202110919795.6 filed on August 11, 2021, and the title of the invention is "Locking Device and Lifting Equipment", which is incorporated herein by reference in its entirety.

technical field

The present application relates to the technical field of climbing devices, in particular to a locking device and lifting equipment.

Background technique

Lifting equipment is a low-speed light-duty lifting machine that uses a motor to drive a lifting platform to run up and down a track installed on a building or equipment ladder to transport personnel and materials at high altitudes.

During the operation of the lifting equipment, due to overload or other unexpected reasons, the lifting equipment will stall and fall. This process usually relies on the instantaneous acceleration lock of the fall prevention device. But sometimes there will be a case where the fall arrester cannot be opened, thereby making the locking ineffective.

In the above situation, an independent locking structure appears. By pulling up the brake handle, the locking structure can be opened and locked on the guide rail to protect the safety of lifting equipment and personnel. However, this locking structure is inconvenient to operate, and it is time-consuming and labor-intensive to pull up the brake handle in an emergency.

Contents of the invention

This application provides a locking device and a lifting device, which are used to solve the technical defects of inconvenient use of the locking structure in the prior art, and time-consuming and labor-intensive operation in critical situations, so as to realize the locking device that is easy to operate and only needs to be pressed for locking. The effect is obvious when used in critical situations.

In order to achieve the above object, the first aspect of the present application provides a locking device, including: a body, a locking member and an unlocking member;

Wherein, the body is located on the lifting device, and the locking member and the unlocking member are respectively installed on the body;

The locking member is used to lock the lifting device on the guide rail by pressing;

The unlocking member is used to convert the lifting device from a locked state to an unlocked state.

According to the locking device provided in the present application, the body includes a seat body, a lock body and an elastic element;

Wherein, a sliding cavity is opened in the seat, the lock body is arranged in the sliding cavity through the elastic element, and the lock body can move in the sliding cavity.

According to the locking device provided in the present application, an opening is provided at one end of the seat body, and the lock body and the elastic element extend into the sliding cavity through the opening;

Moreover, a first lock groove is opened on the base body, and the locking member is partially disposed in the first lock groove.

According to the locking device provided in the present application, the lock body includes an unlocking portion and a locking portion, and a second locking groove is opened on the locking portion;

Wherein, when the elastic element is in a compressed state, the position of the second locking groove is aligned with the position of the first locking groove;

When the elastic element is in the reset state, the positions of the second locking slot and the first locking slot are offset from each other.

According to the locking device provided in the present application, the locking member includes a pressing member, a connecting rod, a lock tongue and a support;

Wherein, the lock tongue and the connecting rod are respectively connected to the support, the pressing member is movably connected with one end of the connecting rod, and the other end of the connecting rod is matched with the lock tongue for The lock tongue is controlled to rotate on the support.

According to the locking device provided by the present application, the other end of the connecting rod forms a contact;

A sliding slot matched with the contact is provided on the locking tongue, and the contact can move in the sliding slot to rotate the locking tongue.

According to the locking device provided in the present application, the unlocking member includes an actuating member and a follower;

Wherein, the actuating member is located outside the base, one end of the follower is connected to the actuating member, and the other end of the follower passes through the base and is connected to the lock body.

According to the locking device provided in the present application, the seat body is integrally formed with the body of the lifting equipment; or

A connection seat is provided on the outer surface of the seat body, and the seat body is fixedly connected with the vehicle body of the lifting device through the connection seat.

According to the locking device provided in the present application, an intermediate sleeve is arranged between the sliding cavity and the lock body.

In order to achieve the above purpose, a second aspect of the present application provides a lifting device, including the locking device described in any one of the above.

In the locking device provided by the present application, the locking part can be separated from the lock body by pressing the locking part, and the lock body can be pulled out from the sliding chamber and snapped into the guide rail instantaneously to realize the mechanical limit.

Since the action of pressing the locking member is in the same direction as the falling direction of the lifting equipment during the stalling and falling process, the air resistance encountered by the pressing action is relatively small. It is more convenient to limit the operation in the case, saving time and effort. It can solve the problem of inconvenient operation of the locking structure in the prior art, and the time-consuming and labor-intensive problems of pulling up the brake handle in an emergency.

Moreover, the locking device of the present application can realize mechanical limit in various situations such as uplink or downlink, and has a wide application range.

Furthermore, the lifting equipment provided by the present application has all the advantages mentioned above because it includes the locking device described in any one of the above.

Description of drawings

In order to more clearly illustrate the technical solutions in the present application or the prior art, the accompanying drawings required in the embodiments will be introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present application. For this application Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is an exploded schematic view of the locking device provided by the present application;

Fig. 2 is a sectional view of the locking device provided by the present application;

Fig. 3 is a schematic diagram of installation of the locking device provided by the present application;

Fig. 4 is a schematic diagram of the use state of the locking device provided by the present application;

Fig. 5 is a schematic diagram of the unlocked state of the locking device provided by the present application;

Fig. 6 is a schematic diagram of the locking state of the locking device provided by the present application;

Reference signs:

1: Body; 11: Seat; 111: Sliding cavity;

112: the first lock slot; 12: lock body; 121: unlocking part;

1211: the second lock slot; 122: snap-in part; 13: elastic element;

14: Middle sleeve; 2: Locking piece; 21: Pressing piece;

22: lock bolt; 221: chute; 23: support;

24: connecting rod; 231: the first connecting part; 2311: the first connecting hole;

232: the second connecting part; 2321: the second connecting hole; 2322: the third connecting hole;

3: Unlocking piece; 31: Actuating piece; 32: Follower piece;

4: guide rail; 41: locking hole.

Detailed ways

In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings in this application. Obviously, the described embodiments are part of the embodiments of this application , but not all examples. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. "First", "second", "third" and "fourth" do not represent any sequence relationship, but are only distinguished for convenience of description. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations. "Current" at the moment when an action is performed, multiple currents appear in the text, all of which are recorded in real time as time goes by.

Embodiments of the present application will be described below with reference to FIG. 1 to FIG. 5 . It should be understood that the following description is only an exemplary embodiment of the application, and does not constitute any limitation to the application.

Please refer to Figures 1 to 5 in detail. This application provides a locking device, which includes a body 1, a locking part 2 and an unlocking part 3. The body 1 is located on the lifting device, and the locking part 2 and the unlocking part 3 are respectively installed on the body. 1 on.

As shown in Figure 1, the body 1 includes a seat body 11, a lock body 12 and an elastic element 13, a sliding cavity 111 is provided in the seat body 11, the lock body 12 is arranged in the sliding cavity 111 through the elastic element 13, and the lock body 12 can Move in the sliding chamber 111.

Wherein, when the elastic element 13 is in a compressed state, the locking member 2 is in contact with the lock body 12 to limit the lock body 12 from protruding from the sliding cavity 111; when the elastic element 13 is in a reset state, the locking member 2 and the lock The body 12 is separated, and the lock body 12 protrudes from the sliding cavity 111 and is snapped into the guide rail; achieve locking.

As shown in Figure 1, in the embodiment of the present application, the base body 11 is a cup-shaped structure, one end of which is provided with an opening, and the lock body 12 and the elastic element 13 extend into the sliding cavity 111 from the opening, and the lock body 12 can be moved from The opening protrudes and is inserted into the guide rail; and a first lock groove 112 is opened on the side wall of the seat body 11 , and the locking member 2 is partly disposed in the first lock groove 112 .

In some embodiments, the seat body 11 is integrally formed with the body of the lifting device, and can be formed by crushing; or a connecting seat (not labeled in the figure) is provided on the outer surface of the seat body 11, and the connecting seat can be a flange. It is welded or integrally formed with the seat body 11, and the connection seat is fixedly connected with the lifting equipment body by screws or bolts.

In some embodiments, the structure of the base body 11 and the lock body 12 are corresponding, and may be a cylinder, a cuboid, or various shapes or special shapes.

As shown in Figure 1, in the embodiment of the present application, specifically, the lock body 12 can be a stepped shaft, which includes an unlocking portion 121 and a snap-in portion 122, the snap-in portion 122 is used to snap into the guide rail, and the snap-in portion 122 A second lock slot 1211 is formed on the top. And, the shape of the end of the lock body 12 (that is, the engaging portion 122) can be determined according to the shape of the locking hole 41 provided on the guide rail, and can be any form or structure of any shape, and the length of the lock body 12 and the locking device The overall length can be adjusted accordingly according to the usage.

Wherein, when the elastic element 13 is in the compressed state (equivalent to the lock device being in the unlocked state), the position of the second lock groove 1211 is aligned with the position of the first lock groove 112, that is to say, the position of the lock member 2 from the first The lock groove 112 can penetrate into the second lock groove 1211, and make the locking piece 2 contact with the second lock groove 1211, that is, the locking piece 2 snaps into the second lock groove 1211, so as to limit the lock body 12 from sliding The cavity 111 protrudes, so that the lock body 12 is kept separated from the locking hole 41 of the guide rail, as shown in FIG. 6 .

When the elastic element 13 is in the reset state, the position of the second lock groove 1211 is staggered from the position of the first lock groove 112 (equivalent to the locking device being in the locked state), and the lock body 12 protrudes from the sliding cavity 111, so that The outer end of the engaging portion 122 is inserted into the locking hole 41 of the guide rail, as shown in FIG. 7 . Preferably, the elastic element 13 in the present application may be a spring, and the wire diameter, number of coils and length of the spring are all correspondingly increased or decreased or deformed according to the structural size of the locking device.

In addition, in some embodiments, as shown in Figures 6 and 7, an intermediate sleeve 14 is provided between the sliding cavity 111 and the lock body 12, which can effectively prevent friction between the lock body 12 and the sliding cavity 111, and facilitate replacement and maintenance. . It is also possible to increase the radial dimension of the seat body 11 , which is equivalent to thickening the seat body 11 , so as to prevent the lock body 12 from moving in the sliding cavity 111 and cause serious wear of the seat body 11 .

Correspondingly, a notch corresponding to the position of the first locking groove 112 is provided on the side wall of the middle sleeve 14 , so that the locking member 2 can extend from the first locking groove 112 into the second locking groove 1211 .

In some embodiments, no intermediate sleeve may be provided between the sliding cavity 111 and the lock body 12 , and the lock body 12 directly slides in the sliding cavity 111 by properly setting the friction coefficient between the lock body 12 and the sliding cavity 111 . Correspondingly, the locking member 2 can directly extend from the first locking slot 112 into the second locking slot 1211 .

In the embodiment of the present application, the locking piece 2 is used to lock the lifting equipment on the guide rail by pressing; it can be understood that, by pressing the locking piece 2 in this application, the locking piece 2 and the lock body 12 is separated, and now the elastic element 13 is in the reset state, and the lock body 12 protrudes from the sliding cavity 111 and snaps into the guide rail instantaneously to realize the mechanical limit, that is, to lock the lifting device on the guide rail.

Because in the process of stalling and falling, the action of pressing the locking member 2 is consistent with the falling direction of the lifting equipment, so the air resistance suffered by the pressing action is relatively small. In critical situations, it is more convenient for limit operation, saving time and effort. It can solve the problem of inconvenient operation of the locking structure in the prior art, and the time-consuming and labor-intensive problems of pulling up the brake handle in an emergency.

Specifically, as shown in FIGS. 1 to 3 , the locking member 2 includes a pressing member 21 , a connecting rod 24 , a lock tongue 22 and a support 23 .

Wherein, as shown in Figures 5-7, the dead bolt 22 is movably connected on the support 23, and the pressing member 21 can be movably connected with one end of the connecting rod 24 through a pin shaft, and the other end of the connecting rod 24 forms a contact. 22 is provided with a chute 221 (as shown in FIG. 2 ) matched with the contact, and the contact moves in the chute 221 to make the dead bolt 22 rotate. Specifically, by touching the pressing piece 21, the pressing piece 21 controls the connecting rod 24 to pry the lock tongue 22, and realizes driving the lock tongue 22 to rotate, so that the lock tongue 22 is separated from the lock body 12, and the lock body 12 is in the elastic element 13. Under the reset force, it pops out from the sliding cavity 111 and is restricted on the locking hole 41 of the guide rail. Wherein, the structure of the pressing member 21 is not limited, as long as it can realize the function of driving the lock tongue 22 to rotate after pressing the connecting rod, such as the button structure adopted in the embodiment of the present application.

Furthermore, the cross-sectional shape of the support 23 is "T" shape, including a first connection part 231 and a second connection part 232, wherein a first connection hole 2311 is opened on the first connection part 231, and the support 23 Installed on the base body 11 through the first connection hole 2311, it is equivalent to the first connection part 231 resting on the first lock slot 112, which can prevent dust from entering the lock slot and affecting the use of the lock slot.

Wherein the second connection part 232 is provided with a second connection hole 2321 and a third connection hole 2322, the connecting rod 24 is installed on the support 23 through the second connection hole 2321, and the deadbolt 22 is installed on the support through the third connection hole 2322. Seat 23.

In the present embodiment, the way that the connecting rod 24 and the dead bolt 22 are fixed on the support 23 can be fixed by a pin shaft, or can be connected with bolts or pins by changing the size of each connecting hole.

In addition, the connecting rod 24 can be replaced by a lever mechanism, and the triggering and locking of the lock body 12 can also be realized through a plurality of connecting rod 24 mechanisms.

In the embodiment of the present application, the unlocking member 3 is used to switch the lifting device from a locked state to an unlocked state by pulling. As shown in Figure 2, the unlocking member 3 is fixedly connected to the lock body 12, and by pulling the unlocking member 3, the lock body 12 is moved in the sliding cavity 111 to squeeze the elastic element 13, so that the elastic unit 13 is in a compressed state, and The contact between the locking member 2 and the lock body 12 is realized so as to restrict the lock body 12 from protruding from the sliding cavity 111 and at the same time make the lock body 12 disengage from the locking hole 41 on the guide rail.

Specifically, as shown in FIGS. 1 and 2 , the unlocking member 3 includes an actuating member 31 and a driven member 32 .

Wherein, as shown in FIG. 2 , one end of the follower 32 (the end connected to the touch piece 31 ) penetrates through the pre-set snapping hole 1220 on the snapping portion 122 , and passes through the lock body 12 , the elastic element 13 , the seat in sequence body 11, and after passing through the seat body 11, it is fixedly connected with the touch piece 31. Wherein, the locking block provided at the other end of the follower 32 is engaged with the locking hole 1220 , so that the other end of the follower 32 is fixedly connected with the lock body 12 . By pulling the touch piece 31 , the touch piece 31 moves, and drives the lock body 12 to move in the sliding cavity 111 to squeeze the elastic element 13 .

Specifically, the actuating part 31 may be a pull ring, and the driven part 32 may be a wire rope, a rod or a shaft.

As shown in Figures 5 to 7, during the working process of the present application, when the locking device needs to start the locking function, the pressing member 21 is pressed downward, and the pressing member 21 drives the lock tongue 22 to rotate at a certain angle on the support 23 , so that the lock tongue 22 is separated from the second lock groove, and the lock body 12 pops up under the thrust of the elastic element 13, so that the end of the lock body 12 is stuck in the locking hole 41 of the guide rail, and the mechanical locking limit is realized.

As shown in Figures 6 and 7, when the locking device is in the unlocked state in this application, due to the limited length of the locking part 122 of the lock body 12, in order to realize that after pressing the pressing member 21 downward, the connecting rod 24 drives the lock The tongue 22 rotates a certain angle on the support 23, so that the lock body 12 is away from the seat body 11 under the action of the elastic element 13, and the clamping portion 122 of the lock body 12 will be clamped into the locking hole 41 of the guide rail 4, and the lock body 12 will be locked into the locking hole 41 of the guide rail 4. The connecting part 122 needs to be set in the chute of the guide rail 4 when it is in the unlocked state, and the outer end of the engaging part 122, that is, the end extending into the locking hole 41 of the guide rail, is a preset distance away from the locking hole 41 on the guide rail 4 , the preset distance enables the locking portion 122 to be locked into the locking hole 41 in the locked state, so as to realize the mechanical locking limit.

In some embodiments, by adjusting the length of the engaging portion 122 of the lock body 12 and the length of the second lock slot 1211 for locking, the outer end of the engaging portion 122 faces the guide rail 4 in the unlocked state. and a certain distance from the chute of the guide rail 4, after pressing down the pressing member 21, the connecting rod 24 drives the lock tongue 22 to rotate on the support 23 at a certain angle, so that the lock body 12 acts on the elastic element 13 Keeping away from the seat body 11 , the snap-in portion 122 of the lock body 12 will snap into the locking hole 41 of the guide rail 4 to realize mechanical locking and positioning. That is, the engaging portion 122 may not be in the slide groove of the guide rail 4 when in the unlocked state, but can also be snapped into the locking hole 41 in the locked state to realize mechanical locking and positioning.

When the locking device needs to start the unlocking function, the trigger 31 is pulled hard, and the trigger 31 drives the lock body 12 to slide in the sliding cavity 111 through the follower 32, squeezes the elastic element 13, and makes the clamping on the lock body 12 The part 122 is drawn out from the locking hole 41 of the guide rail. At the same time, the contact piece 31 drives the lock body 12 to continue to slide in the sliding cavity 111 through the follower 32. When the lock tongue 22 contacts with the second lock groove and is stuck in the second When it is in the lock slot, the unlocking action is completed.

As an embodiment of the present application, the present application provides a lifting device, including the locking device described in any one of the above.

The locking device provided by this application can not only make up for the failure of the anti-fall device and cannot be locked, that is, it can realize emergency braking when an accident occurs in the lifting equipment; The unique mechanical locking makes the operation safety of the lifting equipment higher, and fills the blank of the upward locking of the lifting equipment, with simple structure and easy operation.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

A locking device, characterized by comprising: a body, a locking piece and an unlocking piece;

Wherein, the body is located on the lifting device, and the locking member and the unlocking member are respectively installed on the body;

The locking member is used to lock the lifting device on the guide rail by pressing;

The unlocking member is used to convert the lifting device from a locked state to an unlocked state.
The locking device according to claim 1, wherein the body comprises a seat body, a lock body and an elastic element;

Wherein, a sliding cavity is opened in the seat, the lock body is arranged in the sliding cavity through the elastic element, and the lock body can move in the sliding cavity.
The locking device according to claim 2, wherein an opening is provided at one end of the seat body, and the lock body and the elastic element extend into the sliding cavity through the opening;

Moreover, a first lock groove is opened on the base body, and the locking member is partially disposed in the first lock groove.
The locking device according to claim 3, wherein the lock body includes an unlocking portion and a locking portion, and a second locking groove is opened on the locking portion;

Wherein, when the elastic element is in a compressed state, the position of the second locking groove is aligned with the position of the first locking groove;

When the elastic element is in the reset state, the positions of the second locking slot and the first locking slot are offset from each other.
The locking device according to claim 2, wherein the locking member comprises a pressing member, a connecting rod, a lock tongue and a support;

Wherein, the lock tongue and the connecting rod are respectively connected to the support, the pressing member is movably connected with one end of the connecting rod, and the other end of the connecting rod is matched with the lock tongue for The lock tongue is controlled to rotate on the support.
The locking device according to claim 5, wherein a contact is formed at the other end of the connecting rod, and a chute matching with the contact is opened on the lock tongue, and the contact can Move within the chute to rotate the deadbolt.
The locking device according to claim 2, wherein the unlocking member comprises a trigger member and a follower member;

Wherein, the actuating member is located outside the base, one end of the follower is connected to the actuating member, and the other end of the follower passes through the base, the elastic element and connects with the lock body connected.
The locking device according to claim 2, wherein the seat body is integrally formed with the body of the lifting device; or

A connection seat is provided on the outer surface of the seat body, and the seat body is fixedly connected with the vehicle body of the lifting device through the connection seat.
The locking device according to any one of claims 2 to 8, characterized in that, an intermediate sleeve is arranged between the sliding cavity and the lock body.
A lifting device, characterized by comprising the locking device described in any one of claims 1-9.