CN216190929U

CN216190929U - Anti-falling lifting device and stacking machine

Info

Publication number: CN216190929U
Application number: CN202122500694.3U
Authority: CN
Inventors: 缪华辉; 汪成伟; 陈国超; 夏义俊; 何劼; 陈蕃科
Original assignee: Jiangsu Contemporary Amperex Technology Ltd
Current assignee: Jiangsu Contemporary Amperex Technology Ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-04-05
Anticipated expiration: 2031-10-18

Abstract

The application relates to an anti-falling lifting device and a stacking machine, which comprise a guide rail, a rack, a locking mechanism, a power mechanism and a traction rope, wherein the guide rail and the rack are relatively fixed, one end of the traction rope is connected with the power mechanism, the locking mechanism comprises a mounting seat and a stop block positioned on one side of the rack, the mounting seat is slidably connected with the guide rail, and the stop block is eccentrically mounted on the mounting seat and can rotate around an axis; the stop block is provided with a first end connected with the other end of the traction rope and a second end matched with the rack; wherein, the haulage rope is in lax state, and the dog can rotate and make second end and rack cooperation with the locking mount pad. The anti-falling lifting device can not cause any damage to a power mechanism of the lifting device, improves the overall stability of the anti-falling lifting device, and is good in anti-falling effect. And, the rotation through the dog triggers the locking function, adopts pure mechanical structure to realize, need not to fall to elevating gear and detects, and simple structure prevents weighing down effectually, and use cost is low.

Description

Anti-falling lifting device and stacking machine

Technical Field

The application relates to the technical field of lifting equipment, in particular to an anti-falling lifting device and a stacking machine.

Background

In devices with lifting functions such as stacking machines and elevators, a power mechanism is generally matched with a traction rope to provide power to drive a lifting mechanism to lift. When the haulage rope breaks suddenly, in order to prevent that hoist mechanism from falling fast, improve the safety in utilization of equipment, all be equipped with in the equipment and prevent weighing down the mechanism.

The anti-falling mechanism in the related art can realize the anti-falling function, but has the problems of poor stability and easy damage and failure.

SUMMERY OF THE UTILITY MODEL

Based on the problems, the application provides an anti-falling lifting device and a stacking machine, which can solve the problems of poor stability and easy damage and failure of an anti-falling mechanism in the anti-falling process.

According to an aspect of the application, the embodiment of the application provides a fall prevention lifting device, which comprises: a guide rail and a rack which are fixed relatively; the locking mechanism comprises a mounting seat and a stop block positioned on one side of the rack, the mounting seat is connected to the guide rail in a sliding mode, and the stop block is eccentrically mounted on the mounting seat and can rotate around an axis; the gear rack comprises a power mechanism and a traction rope, wherein one end of the traction rope is connected with the power mechanism, and the check block is provided with a first end connected with the other end of the traction rope and a second end matched with the gear rack; wherein, the haulage rope is in lax state, and the dog can rotate and make second end and rack cooperation with the locking mount pad.

Among the technical scheme of this application embodiment, dog among the locking mechanism is located one side of rack, the dog is installed in the mount pad eccentrically, the one end and the power unit of haulage rope are connected, the other end of haulage rope is connected with the first end of dog, the haulage rope just can drive dog and mount pad and slide along the guide rail together, when the haulage rope is in lax state because reasons such as fracture, the dog loses the traction force of haulage rope and rotates on the mount pad, make the second end and the rack cooperation of dog, effort between the second end of dog and the rack can prevent dog and mount pad to continue to slide along the guide rail, thereby play the locking effect to the mount pad. Because locking mechanism and rack all are independent of elevating gear's power unit outside, the dog in the locking mechanism and the cooperation of rack realize the locking to the mount pad, and then realize preventing weighing down the function, whole in-process can not cause any damage to elevating gear's power unit, makes hoist mechanism no longer have the tenesmus risk, has promoted the holistic stability of preventing weighing down elevating gear, prevents weighing down effectually. And, in the use, trigger the locking function through the rotation of dog, adopt pure mechanical structure to realize, need not to fall to elevating gear and detect, simple structure prevents weighing down effectually, use cost is low.

In one embodiment, the pull-cord is under tension; the pull rope pulls the stop block to rotate so that the second end is separated from the rack. Due to the design, when the traction rope is in a tensioning state, namely the lifting device is in a normal use process, the second end of the stop block is kept separated from the rack, and the stop block cannot influence the normal lifting of the lifting device.

In one embodiment, the locking mechanism further comprises: the fixing seat is fixed on the mounting seat; the elastic piece and the ejector rod are arranged on the fixed seat, and the elastic piece is positioned between the fixed seat and the ejector rod; the opposite ends of the elastic part are respectively abutted against one end of the fixed seat and one end of the ejector rod so as to provide elastic force for enabling the other end of the ejector rod to have a trend of moving towards the second end. Through set up elastic component and ejector pin on locking mechanism's fixing base, the ejector pin under the elastic action of elastic component with the second end butt of dog, when the messenger is in lax state because reasons such as fracture, behind the dog lost the traction force of haulage rope, the ejector pin just can drive the dog and rotate under the elasticity promotion of elastic component, make the second end of dog and rack cooperation realize the locking, make locking mechanism's locking function sensitive more, quick and high-efficient.

In one embodiment, the fixing seat is provided with an accommodating groove, and the elastic piece is arranged in the accommodating groove; one end of the ejector rod extends into the accommodating groove and is abutted to the elastic piece. The installation cooperation of elastic component and ejector pin and fixing base is more convenient for such design.

In one embodiment, the fixed seat is provided with a guide hole communicated with the accommodating groove; the other end of the ejector rod penetrates out of the guide hole. Through set up the guiding hole on the fixing base, can play the guide effect to the removal of ejector pin, be convenient for drive the dog through the ejector pin and rotate and realize the locking function.

In one embodiment, the locking mechanism further comprises an adjusting piece, and the accommodating groove penetrates through one side of the fixed seat far away from the stop block; the regulating part is arranged on one side of the fixed seat far away from the stop block so as to block the accommodating groove and support the elastic part. Through setting up the holding tank that runs through the fixing base, set up the regulating part in one side that the dog was kept away from to the fixing base and come the shutoff holding tank, can make the regulating part play the supporting role to the elastic component, the installation, the connection and the dismantlement of the elastic component of being convenient for.

In one embodiment, the adjusting piece is at least partially accommodated in the accommodating groove; and the adjusting piece is movably connected to the fixed seat along the axis direction of the guide hole. Such design makes the regulating part can remove for the fixing base to increase or reduce the extrusion degree to the elastic component, adjust the compression degree of elastic component, thereby increase or reduce the thrust of elastic component to the ejector pin, make the ejector pin be applicable to different service behavior.

In one embodiment, the inner wall of the accommodating groove is provided with an internal thread, the adjusting piece comprises an adjusting screw rod, and the adjusting screw rod is provided with an external thread matched with the internal thread. The adjustment of the adjusting screw rod is realized through the matching of the external thread on the adjusting screw rod and the internal thread on the inner wall of the accommodating groove, so that the adjustment of the compression degree of the elastic part by the adjusting part is simpler and more convenient.

In one embodiment, the locking structure further comprises a proximity switch arranged on the fixed seat and a guide rail lock for locking the guide rail; the proximity switch is electrically connected to the rail lock and is configured to be triggered in response to movement of the ram adjacent the stop. Through set up proximity switch on the fixing base, when the ejector pin was close to the dog and removed, proximity switch triggered and control guide rail lock comes to carry out the locking to the guide rail, realizes preventing weighing down elevating gear's dual locking, further promotes its safety in utilization.

In one embodiment, the number of the guide rails is at least two, two adjacent guide rails are arranged side by side, and the rack is arranged between the two adjacent guide rails. Such design makes the mount pad can promote the stability of mount pad when sliding along the guide rail at multiple spot and guide rail sliding fit to the rack is located between two adjacent guide rails, and overall structure is compacter.

According to another aspect of the application, the embodiment of the application provides a forklift, and the forklift comprises the anti-falling lifting device in the embodiment.

The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Moreover, like reference numerals are used to refer to like elements throughout. In the drawings:

FIG. 1 is a schematic overall structural view of a fall arrest lifting device provided in accordance with an embodiment of the present application;

FIG. 2 is a schematic structural view of a fall arrest lifting device provided in accordance with an embodiment of the present application from one perspective;

FIG. 3 is a structural cross-sectional view of the fall arrest lifting device provided in accordance with one embodiment of the present application from another perspective;

FIG. 4 is an enlarged partial view taken at A in FIG. 3 with the pull-cord broken;

fig. 5 is an enlarged partial view at a in fig. 3 with the pull-cord in a tensioned state.

The reference numbers in the detailed description are as follows:

an anti-falling lifting device 10;

guide rail 110, rack 120, pull rope 130;

the locking mechanism 200, the mounting seat 210, the stopper 220, the first end 221, the second end 222, the fixing seat 230, the receiving groove 231, the guide hole 232, the elastic member 240, the ejector rod 250, the adjusting member 260, the proximity switch 270, and the guide rail lock 280.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "length," "upper," "lower," "rear," "horizontal," "top," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements or in a relationship wherein the two elements interact, unless expressly limited otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

At present, in stacking machines for lifting cargoes, elevators for carrying people and other equipment with lifting functions, a driving mechanism is generally matched with a traction rope to provide power to drive a lifting mechanism to lift. When the haulage rope breaks suddenly, in order to prevent that hoist mechanism from falling fast, improve the safety in utilization of equipment, all be equipped with in the equipment and prevent weighing down the mechanism.

The inventor notices that the anti-falling mechanism in the related art adopts the detection switch to carry out fracture detection on the traction rope connected to the lifting mechanism, when the traction rope is fractured, a fracture signal can be triggered, and the clamping mechanism is controlled to lock the driving shaft of the power mechanism, so that the lifting mechanism is prevented from falling rapidly. Although the anti-falling mechanism can realize the anti-falling function, the anti-falling mechanism can not effectively protect the lifting mechanism, when the clamping mechanism plays a braking role, the moment is suddenly increased, the driving shaft is easily broken, the whole lifting equipment is damaged, and finally the lifting mechanism still has the falling risk to cause safety accidents. In summary, the anti-falling mechanism in the related art has the problems of poor stability and easy damage and failure.

Based on the above consideration, in order to improve the stability of preventing weighing down the mechanism when using, avoid it to appear damaging the problem that became invalid, the inventor has conducted intensive research, designed a prevent weighing down elevating gear, wherein, dog among the locking mechanism is located one side of rack, the dog is installed in the mount pad eccentrically, the one end and the power unit of haulage rope are connected, the other end and the first end of dog of haulage rope are connected, the haulage rope just can drive dog and mount pad and slide along the guide rail together, when the haulage rope is in lax state because reasons such as fracture, the dog loses the traction force of haulage rope and rotates on the mount pad, make the second end and the rack cooperation of dog, the effort between the second end of dog and the rack can prevent dog and mount pad to continue to slide along the guide rail, thereby play the locking effect to the mount pad.

In such anti-falling lifting device, because the locking mechanism and the rack are independent of the power mechanism of the lifting device, the stop block in the locking mechanism is matched with the rack to realize the locking of the mounting seat, so that the anti-falling function is realized, the power mechanism of the lifting device cannot be damaged in the whole process, the lifting mechanism no longer has the falling risk, the integral stability of the anti-falling lifting device is improved, and the anti-falling effect is good. And, in the use, trigger the locking function through the rotation of dog, adopt pure mechanical structure to realize, need not to fall to elevating gear and detect, simple structure prevents weighing down effectually, use cost is low.

According to some embodiments of the present application, please refer to fig. 1 to 3, fig. 1 is a schematic structural diagram of an overall anti-falling lifting device 10 provided in an embodiment of the present application, fig. 2 is a schematic structural diagram of the anti-falling lifting device 10 provided in an embodiment of the present application from one view, and fig. 3 is a sectional structural diagram of the anti-falling lifting device 10 provided in an embodiment of the present application from another view. The embodiment of the application provides an anti-falling lifting device 10, and the anti-falling lifting device 10 comprises a relatively fixed guide rail 110, a rack 120, a locking mechanism 200, a power mechanism and a traction rope 130 with one end connected with the power mechanism. The locking mechanism 200 includes a mounting base 210 and a stopper 220 at one side of the rack gear 120, the mounting base 210 is slidably coupled to the guide rail 110, the stopper 220 is eccentrically mounted to the mounting base 210, and the stopper 220 is capable of rotating about an axis. The stopper 220 has a first end 221 connected to the other end of the pull cord 130 and a second end 222 for engaging the rack 120. When the pull-cord 130 is in a slack condition, the stop 220 can be rotated such that the second end 222 engages the rack 120 to lock the mount 210.

The guide rail 110 is used for a lifting mechanism (not shown) of the lifting device 10 to move along and guide the lifting mechanism. The length of the guide rail 110 and the direction of the guide rail 110 can be adjusted according to the use requirements of the lifting device 10 in different use scenes, which is not limited herein.

The rack 120 is used for cooperating with the locking mechanism 200 to lock the lifting device 10, the rack 120 is a strip-shaped toothed structure, the rack 120 and the guide rail 110 are relatively fixed, the longitudinal extending direction of the rack 120 is parallel to the longitudinal extending direction of the guide rail 110, and a plurality of teeth are arranged on the surface of the rack 120 facing the stopper 220 for being clamped and fixed with the stopper 220.

Referring to fig. 4 in conjunction with fig. 1 to 3, fig. 4 is a partially enlarged schematic view of a portion a in fig. 3 when the pulling rope 130 is in a broken state. The principle of the stopper 220 locking the lifting device 10 is described below: in the lifting device 10 according to the embodiment of the present application, one end of the traction rope 130 is connected to the power unit, the other end of the traction rope 130 is connected to the first end 221 of the stopper 220, and the stopper 220 is mounted to the mounting base 210, so that the power unit, such as a motor, etc., can pull the stopper 220 and the mounting base 210 to slide along the guide rail 110 together through the traction rope 130. In the process, the lifting mechanism in the lifting device 10 also slides synchronously along the guide rail 110. When the pulling rope 130 is in a loose state due to breakage and the like, the first end 221 of the stopper 220 loses the traction force of the pulling rope 130, because the stopper 220 is eccentrically installed on the installation seat 210, the stopper 220 rotates around an axis on the installation seat 210 under the action of self weight, in the rotating process, the second end 222 of the stopper 220 moves to a position between the racks 120 and is matched with the racks 120, the racks 120 are provided with a plurality of teeth arranged at intervals, and the acting force generated by the abutting of the second end 222 of the stopper 220 and the teeth of the racks 120 can prevent the stopper 220 and the installation seat 210 from continuously sliding along the guide rail 110, so that the locking effect is achieved on the installation seat 210.

By eccentrically mounting the stopper 220 on the mounting seat 210, when the pulling rope 130 is in a loose state due to breakage or the like, the stopper 220 loses the traction force of the pulling rope 130 and rotates on the mounting seat 210, so that the second end 222 of the stopper 220 is engaged with the rack gear 120, and the acting force between the second end 222 of the stopper 220 and the rack gear 120 prevents the stopper 220 and the mounting seat 210 from continuously sliding along the guide rail 110, thereby locking the mounting seat 210. Because the locking mechanism 200 and the rack 120 are independent of the power mechanism of the lifting device 10, the stopper 220 in the locking mechanism 200 is matched with the rack 120 to lock the mounting seat 210, so that the anti-falling function is realized, the power mechanism of the lifting device 10 cannot be damaged in the whole process, the lifting mechanism no longer has the falling risk, the integral stability of the anti-falling lifting device 10 is improved, and the anti-falling effect is good. In addition, in the use process, the locking function is triggered through the rotation of the stop block 220, the falling detection of the lifting device 10 is not needed due to the adoption of a pure mechanical structure, the structure is simple, the falling prevention effect is good, and the use cost is low.

In some embodiments, optionally, referring to fig. 5 in combination with fig. 1 to fig. 3, fig. 5 is a partially enlarged schematic view of a portion a in fig. 3 when the pulling rope 130 is in a tensioned state. The pull-cord 130 is under tension; the pull cord 130 pulls the stop 220 to rotate so that the second end 222 is separated from the rack 120

When the lifting device 10 is in a normal working state, or is restored to the normal working state from the locking state, and does not need to be locked, at this time, the pulling rope 130 is in a tensioning state, the pulling rope 130 pulls the stopper 220 to rotate, so that the stopper 220 integrally rotates outside the rack 120, the second end 222 of the stopper 220 is separated from the teeth of the rack 120, the acting force generated between the stopper 220 and the teeth of the rack 120 disappears, the stopper 220 and the mounting seat 210 are not locked, and continue to slide along the guide rail 110 under the pulling action of the pulling rope 130.

The design is such that when the pull cord 130 is under tension, i.e., the lifting device 10 is in normal use, the second end 222 of the stopper 220 is kept away from the rack 120, and the stopper 220 does not affect the normal lifting of the lifting device 10.

In some embodiments, the locking mechanism 200 further comprises a fixing seat 230, an elastic member 240 and a push rod 250. The fixing base 230 is fixed to the mounting base 210, the elastic member 240 and the push rod 250 are disposed on the fixing base 230, the elastic member 240 is located between the fixing base 230 and the push rod 250, and opposite ends of the elastic member 240 respectively abut against one ends of the fixing base 230 and the push rod 250, so as to provide an elastic force that the other end of the push rod 250 tends to move toward the second end 222.

The elastic member 240 is compressed between the fixing base 230 and the push rod 250 to deform, so as to apply an elastic force to the fixing base 230 and the push rod 250 in a direction opposite to the direction in which the elastic member 240 is compressed, and the elastic force can make the other end of the push rod 250 have a tendency to move toward the second end 222. Specifically, the elastic member 240 includes, but is not limited to, a spring, a pick, and the like.

Through set up elastic component 240 and ejector pin 250 on locking mechanism 200's fixing base 230, ejector pin 250 under the spring action of elastic component 240 with the second end 222 butt of dog 220, when the rope guide is in the lax state because reasons such as fracture, dog 220 loses behind the traction force of haulage rope 130, ejector pin 250 just can drive dog 220 to rotate under the elasticity promotion of elastic component 240, make the second end 222 of dog 220 and the cooperation of rack 120 realize the locking, make locking mechanism 200's locking function more sensitive, quick and high-efficient.

In some embodiments, optionally, the fixing base 230 is provided with a receiving groove 231, the elastic element 240 is disposed in the receiving groove 231, and one end of the rod 250 extends into the receiving groove 231 and abuts against the elastic element 240.

The receiving groove 231 is used for receiving the elastic member 240, and one end of the elastic member 240 abuts against an inner wall of the receiving groove 231. Therefore, the size, shape, etc. of the receiving groove 231 may be adaptively adjusted according to the structure of the elastic member 240. One end of the push rod 250 abuts against the elastic member 240, so that the other end of the push rod 250 abuts against the second end 222 of the stopper 220 under the elastic force of the elastic member 240.

Such a design facilitates the installation and cooperation of the elastic member 240 and the push rod 250 with the fixing base 230.

In some embodiments, optionally, the fixing seat 230 is provided with a guide hole 232 communicating with the receiving groove 231, and the other end of the push rod 250 passes through the guide hole 232.

The guide hole 232 is communicated with the accommodating groove 231, the size and the shape of the guide hole 232 are matched with the push rod 250 so that the push rod 250 can penetrate out, but the elastic piece 240 still needs to be retained in the accommodating groove 231, and therefore the opening size of the guide hole 232 is smaller than that of the accommodating groove 231.

Through set up guiding hole 232 on fixing base 230, can play the guide effect to the removal of ejector pin 250, be convenient for drive dog 220 through ejector pin 250 and rotate and realize the locking function.

In some embodiments, optionally, the locking mechanism 200 further includes an adjusting member 260, and the receiving slot 231 penetrates through a side of the fixing seat 230 away from the stopper 220. The adjusting member 260 is disposed on a side of the fixing base 230 away from the stopper 220 to close the receiving slot 231 and support the elastic member 240.

The shape of regulating part 260 one end matches with holding tank 231 so that shutoff holding tank 231, can adopt modes such as spiro union, grafting to fix between regulating part 260 and the fixing base 230, also can realize fixed connection with the help of the connecting piece.

Through setting up the holding tank 231 that runs through fixing base 230, set up regulating part 260 in one side that fixing base 230 kept away from dog 220 and come shutoff holding tank 231, can make regulating part 260 play the supporting role to elastic component 240, so, holding tank 231 runs through fixing base 230, and the one end of being convenient for keeping away from ejector pin 250 from fixing base 230 inserts elastic component 240 in holding tank 231, the installation, the connection and the dismantlement of elastic component 240 of being convenient for.

In some embodiments, optionally, the adjusting member 260 is at least partially received in the receiving groove 231; and the adjusting member 260 is movably coupled to the fixing base 230 in the axial direction of the guide hole 232.

When the fall arrest lifting device 10 of the embodiment of the present application is used for a long time, the elastic force of the elastic member 240 may be reduced due to the loose connection between the parts, and therefore, in order to avoid the failure of the elastic member 240, the adjusting member 260 may be moved in the receiving groove 231 to change the degree of compression of the elastic member 240.

The design is that the adjusting member 260 can move relative to the fixing seat 230 to increase or decrease the degree of compression on the elastic member 240, so as to adjust the degree of compression of the elastic member 240, thereby increasing or decreasing the pushing force of the elastic member 240 on the push rod 250, and making the push rod 250 suitable for different use conditions. When the elasticity of the elastic member 240 is reduced due to loose connection between the components in the fall arrest lifting device 10, the elastic member 240 can be further compressed by the adjusting member 260 to increase the pushing force of the elastic member 240 against the carrier rod 250.

In some embodiments, optionally, the inner wall of the receiving groove 231 is provided with an internal thread, and the adjusting member 260 includes an adjusting screw, and the adjusting screw is provided with an external thread matching the internal thread.

The adjustment of the adjusting screw is realized by the matching of the external thread on the adjusting screw and the internal thread on the inner wall of the accommodating groove 231, so that the adjustment of the compression degree of the elastic part 240 by the adjusting part 260 is simpler and more convenient.

In some embodiments, optionally, the locking structure further includes a proximity switch 270 disposed on the fixing base 230 and a rail lock 280 for locking the rail 110, wherein the proximity switch 270 is electrically connected to the rail lock 280 and configured to be triggered in response to the push rod 250 moving close to the stopper 220.

The proximity switch 270 is a position switch that can be operated without mechanically directly contacting a moving member, and when the sensing surface of the object proximity switch 270 is located at an operating distance, the switch can be operated without mechanically contacting and applying any pressure. Therefore, when the push rod 250 moves in a direction approaching the stopper 220, the distance between the push rod 250 and the proximity switch 270 changes, and at this time, the proximity switch 270 is activated to be powered, and since the proximity switch 270 is electrically connected to the rail lock 280, the rail lock 280 locks the rail 110 in response to the activation of the proximity switch 270.

Through setting up proximity switch 270 on fixing base 230, when ejector pin 250 is close to dog 220 and removes, proximity switch 270 triggers and control guide rail lock 280 and lock guide rail 110, realizes the dual locking to anti-falling lifting device 10, further promotes its safety in utilization.

With continued reference to fig. 1 and 2, in some embodiments, optionally, the number of the guide rails 110 is at least two, two adjacent guide rails 110 are arranged side by side, and the rack 120 is arranged between two adjacent guide rails 110.

The embodiment shown in the figures has two guide rails 110, and the rack gear 120 is disposed between the two guide rails 110. In other embodiments, the number of the guide rails 110 may also be three or more, and the fixing base 230 and the lifting mechanism are slidably connected to each of the guide rails 110.

Due to the design, the mounting seat 210 can be in sliding fit with the guide rails 110 at multiple points, the stability of the mounting seat 210 when sliding along the guide rails 110 is improved, and the rack 120 is arranged between two adjacent guide rails 110, so that the whole structure is more compact.

According to some embodiments of the application, the application also provides a forklift comprising the anti-falling lifting device 10 in any one of the aspects.

According to some embodiments of the present application, referring to fig. 3-5, the present application provides a fall arrest lifting device 10, wherein a mount 210 is located on one side of a rack 120, the mount 210 is slidably connected to a rail 110, a stop 220 is eccentrically mounted to the mount 210, and the stop 220 is capable of rotating about an axis. A first end 221 of the stop 220 is coupled to the pull cord 130 and a second end 222 of the stop 220 is adapted to engage the rack 120. Meanwhile, the mounting base 210 is further provided with a fixing base 230, the elastic member 240 and the push rod 250 are arranged on the fixing base 230, the elastic member 240 is located between the fixing base 230 and the push rod 250, and two opposite ends of the elastic member 240 respectively abut against one end of the fixing base 230 and one end of the push rod 250. The fixing base 230 is further provided with a proximity switch 270 and a rail lock 280, and the proximity switch 270 is electrically connected with the rail lock 280. When the pulling rope 130 is in a loose state due to breakage or the like, the first end 221 of the stopper 220 loses the pulling force of the pulling rope 130, the stopper 220 rotates around an axis on the mounting seat 210 under the action of self weight and the elastic force of the elastic member 240, and the acting force generated by the abutment of the second end 222 of the stopper 220 and the teeth of the rack 120 prevents the stopper 220 and the mounting seat 210 from continuously sliding along the guide rail 110, so as to lock the mounting seat 210. Meanwhile, after the push rod 250 moves, the proximity switch 270 can be triggered to be powered, and the guide rail lock 280 locks the guide rail 110 in response to the triggering action of the proximity switch 270, so that the anti-falling lifting device 10 is locked doubly.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A fall prevention lifting device, comprising:

a guide rail and a rack which are fixed relatively;

the locking mechanism comprises a mounting seat and a stop block positioned on one side of the rack, the mounting seat is connected to the guide rail in a sliding mode, and the stop block is eccentrically mounted on the mounting seat and can rotate around an axis;

the gear rack comprises a power mechanism and a traction rope, wherein one end of the traction rope is connected with the power mechanism, and the stop block is provided with a first end connected with the other end of the traction rope and a second end matched with the gear rack;

wherein, the haulage rope is in lax state, the dog can rotate and make the second end with the rack cooperation is in order to lock the mount pad.

2. The fall arrest lifting device according to claim 1 wherein the pull line is under tension;

the pull rope pulls the stop block to rotate, so that the second end is separated from the rack.

3. The fall arrest lifting device according to claim 1 or 2, wherein the locking mechanism further comprises:

the fixing seat is fixed on the mounting seat; and

the elastic piece and the ejector rod are arranged on the fixed seat, and the elastic piece is located between the fixed seat and the ejector rod.

4. The fall arrest lifting device according to claim 3 wherein opposite ends of the resilient member abut against the mounting and one end of the ram respectively to provide a resilient force tending to move the other end of the ram towards the second end.

5. The fall arrest lifting device according to claim 4 wherein the mounting block is provided with a receiving groove in which the resilient member is disposed;

one end of the ejector rod extends into the accommodating groove and abuts against the elastic piece.

6. The fall arrest lifting device according to claim 5 wherein the mounting block is provided with a guide hole communicating with the receiving groove;

the other end of the ejector rod penetrates out of the guide hole.

7. The fall arrest lifting device according to claim 6 wherein the locking mechanism further includes an adjustment member, the receiving slot extending through a side of the mounting block remote from the block;

the adjusting piece is arranged on one side, far away from the stop block, of the fixing seat to block the accommodating groove and support the elastic piece.

8. The fall arrest lifting device according to claim 7 wherein the adjustment member is at least partially received within the receiving slot;

and the adjusting piece is movably connected to the fixed seat along the axis direction of the guide hole.

9. The fall arrest lifting device according to claim 8 wherein the inner wall of the receiving groove is provided with an internal thread and the adjustment member comprises an adjustment screw having an external thread matching the internal thread.

10. The fall arrest lifting device according to claim 3 wherein the locking arrangement further includes a proximity switch provided on the mounting and a rail lock for locking the rail;

the proximity switch is electrically connected to the rail lock and configured to be triggered in response to movement of the ram adjacent the stop.

11. The fall arrest lifting device according to claim 1 or claim 2 wherein the number of the guide rails is at least two, adjacent two of the guide rails are arranged side by side and the rack is provided between adjacent two of the guide rails.

12. A fork lift, comprising:

the fall arrest lifting device according to any one of claims 1 to 11.