CN212079183U - External hoisting device of safe cat ladder - Google Patents

Abstract

The utility model belongs to the field of hoisting machinery, in particular to an external hanging lifting device of a safety crawling ladder, which comprises a safety crawling ladder, wherein a lifting frame is fixed on one side of the safety crawling ladder, and an electric lifting machine is arranged at the top of the lifting frame; a telescopic device is arranged on a platform of the safety ladder stand, the telescopic device horizontally extends and retracts towards the electric hoist, and a hook is hinged to the extending end of the telescopic device; a connecting rod is hinged on the hook; one side of the telescopic device is provided with a sliding groove, a sliding block is connected in the sliding groove in a sliding mode, a convex block protruding out of the sliding groove is fixed on one side of the sliding block, the connecting rod is arranged in the convex block in a penetrating mode, a positioning pin is arranged on the connecting rod in a penetrating mode, and the hinge ends of the positioning pin and the connecting rod are arranged on two sides of the convex block relatively. The utility model has the advantages that: the extension end of the telescopic device retracts, so that the hook drives the object to move to the edge of the platform, workers can easily take down heavy objects from the lifting hook without carrying the heavy objects manually, and safety is improved; the operation is easy, the time and the labor are saved, the operation efficiency is improved, and the cost is reduced.

Description

External hoisting device of safe cat ladder

Technical Field

The utility model belongs to hoisting machinery, concretely relates to external hoisting device of safe cat ladder.

Background

The safety ladder can meet the requirement of construction safety, and is widely applied to various engineering constructions such as house construction, bridges, overpasses, tunnels, culverts, chimneys, water towers, dams, large-span shed frames and the like. In the site operation process, when going up the safe cat ladder from top to bottom, constructor need often carry the heavy small-size machines of weight and safety protection articles for use and carry out the operation, and these utensil weight are heavier, a large amount to lead to constructor very tired, and reduced the operating efficiency, wasted time and energy. When the height of the safety ladder is higher, the safety ladder is also dangerous when carrying heavy objects to go up and down stairs. Since the constructors need to frequently carry the devices to climb up and down the safety ladder, the constructors can use large and small materials if frequently using a crane to hoist, and the cost is increased.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides a telescopic device which can make the hook drive the object to move to the edge of the platform by retracting the extending end of the telescopic device, so that the worker can easily take off the heavy object from the hook without manual carrying, thereby improving the safety; the external hanging lifting device of the safe crawling ladder is easy to operate, time-saving and labor-saving, improves the operation efficiency, and reduces the cost.

The utility model provides a technical scheme that its technical problem adopted is: an external hanging lifting device of a safety ladder comprises the safety ladder, wherein a lifting frame is fixed on one side of the safety ladder, and an electric lifting machine is mounted at the top of the lifting frame and is used for hanging and vertically lifting an article through a lifting hook; each layer of platform in the safety ladder stand is provided with a telescopic device, the extending end of the telescopic device horizontally extends and retracts towards the electric hoist, the extending end of the telescopic device is hinged with a hook used for hooking a lifting hook downwards, and the rotating central axis of the hook is horizontally arranged and is vertical to the extending and retracting direction of the telescopic device; a connecting rod is hinged on the hook; one side of telescoping device is equipped with the spout, and sliding connection has the slider in the spout, and the slip direction of slider is parallel with telescoping device's flexible direction, and slider one side is fixed with the lug of protrusion outside the spout, and the connecting rod runs through to set up in the lug, runs through on the connecting rod to be provided with the locating pin, and the hinged end of locating pin and connecting rod sets up in the both sides of lug relatively.

Before a worker climbs the safety ladder, the worker only needs to carry an object to be hung on the lifting hook through the cable. When a plurality of small implements and safety protection articles need to be carried, the small implements and safety protection articles need to be loaded into a basket or a case and then hung on a hook through a cable. And then starting the electric hoist, and setting the lifting speed of the electric hoist when a worker climbs the safety ladder. And when the worker reaches the platform with a certain height and the articles on the lifting hook also reach the platform on the layer, closing the electric elevator. And then, opening the telescopic device, and horizontally extending the extending end of the telescopic device towards the electric hoist. Because set up slider and other cooperation subassemblies, therefore the opening of couple can be towards the lifting hook all the time, and the couple can not take place to rotate. When the hook reaches the oblique upper part of the lifting hook, the telescopic device is suspended, the positioning pin is pulled out, and the hook can rotate downwards and hook the lifting hook at the moment. Then, open the telescoping device, make the end that stretches out of telescoping device retract, finally drive the object through the couple and remove to the platform edge, the workman can easily take off the heavy object from the lifting hook this moment to place on the platform, do not need artifical transport, realized the personage separation, improved the security, the workman operates easily, labour saving and time saving has improved the operating efficiency, the cost is reduced.

Particularly, because the lifted object is often large in size, a large gap is reserved between the lifting hook and the edge of the platform, so that the object can be lifted smoothly, and great potential safety hazards are caused when workers pull the lifting hook manually; and the utility model discloses a telescoping device can pull the object in the place ahead smoothly, has greatly improved high altitude construction's security. On the contrary, in the same way, when the worker needs to climb down the safety ladder stand, the worker carries out the opposite operation, thereby ensuring the safety.

Preferably, the telescopic device is a hydraulic oil cylinder, and objects with large loads can be pulled through the hook.

Furthermore, a base is arranged on a platform in the safety ladder stand, and the telescopic device is arranged on the base; the base is higher than the platform by a certain height so that the heavy object pulled or pushed by the telescopic device can be placed on the platform conveniently.

Specifically, the link is hinged to a hook body bent portion of the hook. When the extending end of the telescopic device horizontally extends towards the electric hoist, the axial load borne by the hinged end of the connecting rod at the bent part of the hook body of the hook is the minimum, so that the connecting rod with lower allowable stress can be selected, and the material cost is reduced.

The utility model discloses an external hoisting device of safe cat ladder's beneficial effect is:

1. the telescopic device is opened to retract the extending end of the telescopic device, and finally the object is driven by the hook to move to the edge of the platform, so that a worker can easily take down a heavy object from the hook and place the heavy object on the platform without manual carrying, thereby realizing the separation of people and improving the safety;

2. the workman is easy, labour saving and time saving has improved the operating efficiency, the cost is reduced.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a front view of an external hanging lifting device of a safety ladder of the utility model;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

Wherein, 1, the safety ladder stand; 2. a hoisting frame; 3. an electric hoist; 4. a hook; 5. a telescoping device; 6. hooking; 7. a connecting rod; 8. a chute; 9. a slider; 10. a bump; 11. positioning pins; 12. a base.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1-2, the embodiment of the external hanging lifting device for the safety ladder stand of the present invention includes a safety ladder stand 1, a lifting frame 2 is fixed on one side of the safety ladder stand 1, an electric elevator 3 is installed on the top of the lifting frame 2, and the electric elevator 3 is suspended by a hook 4 and vertically lifts objects; each layer of platform in the safety ladder stand 1 is provided with a telescopic device 5, the extending end of the telescopic device 5 horizontally extends and retracts towards the electric hoist 3, the extending end of the telescopic device 5 is hinged with a hook 6 used for hooking the lifting hook 4 downwards, and the rotating central axis of the hook 6 is horizontally arranged and is vertical to the extending and retracting direction of the telescopic device 5; a connecting rod 7 is hinged on the hook 6; one side of telescoping device 5 is equipped with spout 8, and sliding connection has slider 9 in the spout 8, and the slip direction of slider 9 is parallel with telescoping device 5's flexible direction, and slider 9 one side is fixed with protrusion 10 outside spout 8, and connecting rod 7 runs through to set up in bump 10, runs through on the connecting rod 7 and is provided with locating pin 11, and locating pin 11 and connecting rod 7's hinged end set up in the both sides of bump 10 relatively.

Before the worker climbs the safety ladder stand 1, the worker only needs to hang objects to be carried on the lifting hook 4 through the cable. When a plurality of small implements and safety protection articles need to be carried, they need to be loaded into a basket or a case and then hung from the hook 4 by a cable. Then, the electric hoist 3 is started, and the hoisting speed of the electric hoist 3 is set when the worker climbs the safety ladder 1. When the worker reaches the platform at a certain height and the article on the hook 4 reaches the platform at the floor, the electric hoist 3 is turned off. Next, the expansion device 5 is opened, and the projecting end of the expansion device 5 horizontally projects toward the electric hoist 3. Due to the arrangement of the slider 9 and other matching components, the opening of the hook 6 can always face the lifting hook 4, and the hook 6 cannot rotate. When the hook 6 reaches the obliquely upper part of the lifting hook 4, the telescopic device 5 is suspended, the positioning pin 11 is pulled out, and the hook 6 rotates downwards and hooks the lifting hook 4. Then, open telescoping device 5, make telescoping device 5 stretch out the end and retract, finally drive the object through couple 6 and remove to the platform edge, the workman can easily take off the heavy object from lifting hook 4 this moment to place on the platform, do not need artifical transport, realized the separation of personage, improved the security, the workman operates easily, labour saving and time saving has improved the operating efficiency, the cost is reduced.

Particularly, because the lifted object is often large in size, a large gap is reserved between the lifting hook 4 and the edge of the platform, so that the object can be lifted smoothly, and great potential safety hazards are caused when workers pull the object manually; in the embodiment, the telescopic device 5 can smoothly pull the object in front, so that the safety of high-altitude operation is greatly improved. On the contrary, in the same way, when the worker needs to climb down the safety ladder stand 1, the reverse operation is carried out, so that the safety is also ensured.

Preferably, the telescopic device 5 is a hydraulic cylinder, and can pull the object with larger load through the hook 6.

Further, a base 12 is arranged on a platform in the safety ladder stand 1, and the telescopic device 5 is installed on the base 12; the base 12 is raised above the platform by a certain height so that a heavy object pulled or pushed by the telescopic device 5 can be placed on the platform.

Specifically, the link 7 is hinged to the hook body bent portion of the hook 6. When the extending end of the telescopic device 5 horizontally extends towards the electric hoist 3, the axial load borne by the hinged end of the connecting rod 7 at the hook body bending part of the hook 6 is the smallest, so that the connecting rod 7 with lower allowable stress can be selected, and the material cost is reduced.

It should be understood that the above description of the specific embodiments is only for the purpose of explanation and not for the purpose of limitation. Obvious changes or variations caused by the spirit of the present invention are within the scope of the present invention.

Claims (4)

1. The utility model provides an external hoisting device of safe cat ladder which characterized in that: the safety ladder comprises a safety ladder stand (1), wherein a lifting frame (2) is fixed on one side of the safety ladder stand (1), an electric lifting machine (3) is installed at the top of the lifting frame (2), and the electric lifting machine (3) is hung through a lifting hook (4) and vertically lifts objects; each layer of platform in the safety ladder stand (1) is provided with a telescopic device (5), the extending end of the telescopic device (5) horizontally extends towards the electric hoist (3), the extending end of the telescopic device (5) is hinged with a hook (6) used for hooking the lifting hook (4) downwards, and the rotating central axis of the hook (6) is horizontally arranged and is vertical to the extending direction of the telescopic device (5); a connecting rod (7) is hinged to the hook (6); one side of telescoping device (5) is equipped with spout (8), sliding connection has slider (9) in spout (8), the slip direction of slider (9) is parallel with the flexible direction of telescoping device (5), slider (9) one side is fixed with lug (10) of protrusion outside spout (8), connecting rod (7) run through and set up in lug (10), it is provided with locating pin (11) to run through on connecting rod (7), the hinged end of locating pin (11) and connecting rod (7) sets up in the both sides of lug (10) relatively.

2. The safety ladder externally hung lifting device according to claim 1, characterized in that: the telescopic device (5) is a hydraulic oil cylinder.

3. The safety ladder externally hung lifting device according to claim 2, characterized in that: a base (12) is arranged on a platform in the safety ladder stand (1), and the telescopic device (5) is installed on the base (12).

4. The safety ladder externally hung lifting device according to claim 1, characterized in that: the connecting rod (7) is hinged with the hook body bending part of the hook (6).

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