CN106884612B - Herringbone elevator - Google Patents

Abstract

According to the herringbone elevator, the single elevator is arranged in the first guide device and can be driven by the power device to perform vertical ascending motion along the first guide device; and the locking device is arranged in the first guide device and used for locking the single ladder when the single ladder is lifted to a preset height position so as to prevent the single ladder from falling. Through the herringbone elevator provided by the invention, a single elevator is directly conveyed between the two groups of supporting ladders and ascends along the vertical direction. The mode of directly adopting the single ladder vertical to the ground to carry out vertical lifting can effectively increase the distance that the whole elevator can be prolonged. Meanwhile, the single-ladder lifting is adopted, so that the weight of the whole herringbone lifting ladder can be effectively reduced.

Description

A herringbone lift

technical field

The invention relates to the technical field of lifts, in particular to a herringbone lift equipped with a single lift that can be lifted.

Background technique

In the maintenance of power lines or high-voltage substations, the operator needs to be lifted into the air for operation. The existing insulating ladders for climbing operations generally use herringbone lifts. The herringbone lifts include single lifts arranged on both sides. Ladder, each lift is composed of three sub-ladders connected to each other. During use, each sub-ladder nested with each other is pulled out and locked one by one to achieve the purpose of increasing the overall height, but at this time, the total of the three sub-ladders is The weight can reach 200kg, and the herringbone lift is composed of two lifts connected to each other, so the overall weight of the ladder is very large, which is very inconvenient for transportation and handling.

SUMMARY OF THE INVENTION

Therefore, the technical problem to be solved by the present invention is to overcome the defects that the overall weight of the herringbone elevator in the prior art is too large, and the transportation and handling are inconvenient.

To this end, the present invention provides a herringbone lift, comprising: two sets of support ladders, which are hinged to each other and can be opened and closed relative to each other; ; a single ladder with two long legs and a cross bar fixed between the long legs, the single ladder is installed in the first guide device, and can be driven along the first guide by the power device The device has a vertical upward movement; a locking device is arranged in the first guide device to lock the single ladder when the single ladder rises to a predetermined height position to prevent the single ladder from falling.

The power device includes: a second guide device, which is fixedly arranged between the two sets of the support ladders, and a second guide chute arranged along the length direction of the second guide device is provided on the body of the second guide device; a single-ladder lifting bracket , slidably installed in the second guide chute, used to lift the single ladder and drive the single ladder to move; pulley assembly, installed inside the second guide device and connected with the single ladder The lifting bracket is connected to drive the single-ladder lifting bracket to move in the second guide device.

The pulley assembly includes: a fixed pulley set, which is fixedly installed at one end of the second guide device close to the first guide device; a movable pulley set, which is movably arranged at the other end of the second guide device, and is connected to the other end of the second guide device. The single-ladder lifting bracket is connected, and the movable pulley block is used to drive the single-ladder lifting bracket to move; a connecting rope connects the fixed pulley block and the movable pulley block, and when the connecting rope is tightened, the The movable pulley block moves toward or away from the fixed pulley block.

The movable pulley group moves along the second guide chute.

The first guide device comprises: a casing; at least one set of limiting mechanisms is installed inside the casing and is parallel to the cross bar of the single ladder, and each set of the limiting mechanisms is sandwiched between the Both sides of the long legs of a single ladder.

The limiting mechanism includes: two connecting rods, which are arranged parallel to each other, and the two ends of each of the cross rods are fixed on the casing; at least two rollers are rotatably installed on each of the cross rods and the The corresponding part of the single ladder.

Through the limiting mechanism, the movement path of the single ladder can be stably limited, and the single ladder can be prevented from shaking.

The limiting mechanism further includes: a rebound mechanism, which is movably mounted on the casing, and has a first state of opening and supporting the cross bar, and a second state of retracting to be parallel to the inner wall of the casing.

The long leg includes a plurality of sub-rods connected with each other, and each of the sub-rods is connected by cross groove fitting.

The herringbone lift further comprises: a support frame connected between the two sets of the support ladders to limit the opening angles of the two sets of the support ladders.

The technical scheme of the present invention has the following advantages:

1. The herringbone lift provided by the present invention, the single ladder is installed in the first guide device, and can move vertically upward along the first guide device under the driving of the power device; the locking device , which is arranged in the first guide device to lock the single ladder when the single ladder rises to a predetermined height position to prevent the single ladder from falling.

Through the herringbone lift provided by the present invention, a single ladder is directly transported between two sets of supporting ladders and ascends in the vertical direction. Compared with the method of extending the overall length by extending the supporting ladder in the prior art, the method of directly using a single ladder perpendicular to the ground for vertical lifting can effectively increase the distance that the entire elevator can extend. At the same time, the use of a single lift can effectively reduce the weight of the entire herringbone lift.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

Fig. 1 is the structural representation of described herringbone lift provided by the present invention;

2 is a schematic structural diagram of the second guide device provided by the present invention;

3 is a schematic structural diagram of the pulley assembly provided by the present invention;

4 is a schematic diagram of the cooperation of the pulley assembly and the second guide device provided by the present invention;

FIG. 5 is a schematic structural diagram of the first guide device provided by the present invention.

Description of reference numbers:

1-support ladder; 2-single ladder; 21-long leg; 22-cross bar; 3-locking device; 4-first guiding device; 41-housing; 42-limiting mechanism; 421-connecting rod; Roller; 6-Second guide device; 7-Single ladder lifting bracket; 8-Second guide chute; 9-Pulley assembly; 91-Fixed pulley group; 92-Moving pulley group; 10-Support frame.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The present embodiment provides a herringbone lift, comprising: two sets of support ladders 1, which are hinged to each other and can be opened and closed relative to each other, and a first guide device arranged in a vertical direction is installed at the joint of the two sets of support ladders 1 4; a single ladder 2, with two long legs 21 and a cross bar 22 fixed between the long legs 21, the single ladder 2 is installed in the first guide device 4, and can be driven by the power device The vertical upward movement occurs along the first guide device 4; the locking device 3 is arranged in the first guide device 4, and is used to lock the single ladder 2 when the single ladder 2 rises to a predetermined height position. The ladder 2 is locked to prevent the single ladder 2 from falling.

During use, a single single ladder 2 is directly transported between the two groups of supporting ladders 1 and ascends in the vertical direction. Compared with the method of extending the overall length by extending the supporting ladder 1 in the prior art, the vertical lifting method of directly using the single ladder 2 perpendicular to the ground can effectively increase the distance that the entire elevator can extend. At the same time, the use of a single single ladder 2 can effectively reduce the weight of the entire herringbone lift.

A rest platform is installed on the single ladder 2 for the operator to sit on and operate.

In this embodiment, the power device includes: a second guide device 6, which is fixedly arranged between the two sets of the support ladders 1, and the second guide device 6 is provided with a second guide device along its length direction on the body. Chute 8; single-ladder lifting bracket 7, slidably installed in the second guide chute 8, used to lift the single-ladder 2 and drive the single-ladder 2 to move; pulley assembly 9, installed Inside the second guide device 6 and connected with the single-ladder lifting bracket 7 to drive the single-ladder lifting bracket 7 to move in the second guide device 6 . The pulley assembly 9 includes: a fixed pulley set 91 , which is fixedly installed inside the second guide device 6 at one end of the first guide device 4 ; and a movable pulley set 92 , which is movably arranged in the second guide device 6 . The other end of the elevator is connected to the single-ladder lifting bracket 7, and the movable pulley group moves along the second guide chute 8 to drive the single-ladder lifting bracket 7 to move; the connecting rope connects the For the fixed pulley block 91 and the movable pulley block 92 , when the connecting rope is tightened, the movable pulley block 92 moves toward or away from the fixed pulley block 91 .

In this embodiment, the first guide device 4 includes: a housing 41 ; at least one set of limiting mechanisms 42 is installed inside the housing 41 and is parallel to the cross bar 22 of the single ladder 2 , each The limiting mechanisms 42 are clamped on both sides of the long legs 21 of the single ladder 2 . The limiting mechanism 42 includes: two connecting rods 421, which are arranged in parallel with each other, and the two ends of each of the transverse rods 22 are fixed on the casing 41; at least two rollers 422 are rotatably installed on each The cross bar 22 corresponds to the position of the single ladder 2 . The rebound mechanism, which is movably installed on the housing 41 , has a first state of opening and supporting the cross bar 22 , and a second state of retracting to be parallel to the inner wall of the housing 41 .

Specifically, the use process of the herringbone lift is as follows:

The external force acts on the connecting rope. At this time, the movable pulley group 92 will move along the second guide chute 8, and the movable pulley group 92 will drive the single-ladder lifting bracket 7 to move. Since the single-ladder lifting bracket 7 supports the single-ladder 2 At this time, the single ladder 2 will move upward through the limiting mechanism 42, and at this time, the rebound mechanism is in a retracted state under the action of the cross bar 22 of the single ladder 2. When the single ladder 2 moves to the preset position, the rebound mechanism pops up to support the cross bar 22 of the single ladder 2 to prevent the single ladder 2 from moving downward.

In this embodiment, the long leg 21 includes a plurality of sub-rods that are connected to each other, and each of the sub-rods is connected through a cross-groove fit. Specifically, the bottom end of the sub-rod located above the single ladder 2 is installed with a female cross groove, and at the same time, the upper end of the female cross groove is installed with a threaded sleeve; the upper end of the sub-rod located below the sub rod is installed with a male cross groove, During use, insert the male cross groove into the female cross groove, and then turn the threaded sleeve to cover the joint part of the male cross groove and the female cross groove.

In this embodiment, the herringbone lift further includes: a support frame 10 connected between the two groups of the support ladders 1 to limit the opening angles of the two groups of the support ladders 1 .

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (8)

1. A herringbone elevator comprising:

the two groups of supporting ladders (1) are hinged with each other and can be opened and closed relatively, and a first guide device (4) arranged along the vertical direction is installed at the joint of the two groups of supporting ladders (1);

the single ladder (2) is provided with two long legs (21) and a cross rod (22) fixed between the long legs (21), and the single ladder (2) is installed in the first guide device (4) and can be driven by a power device to vertically move up along the first guide device (4); the bottom end of the sub-rod above the single ladder (2) is provided with a female cross groove, and the upper end of the female cross groove is provided with a threaded sleeve; the upper end of the sub-rod positioned below the sub-rod is provided with a male cross groove;

a locking device (3) provided in the first guide device (4) to lock the single ladder (2) when the single ladder (2) is raised to a predetermined height position, preventing the single ladder (2) from falling, the power device comprising:

the second guide device (6) is fixedly arranged between the two groups of support ladders (1), and a second guide sliding groove (8) arranged along the length direction of the second guide device (6) is formed in the body of the second guide device;

the single-ladder lifting bracket (7) is slidably arranged in the second guide sliding groove (8) and is used for lifting the single ladder (2) and driving the single ladder (2) to move;

and the pulley assembly (9) is arranged in the second guide device (6) and connected with the single-ladder lifting bracket (7) and is used for driving the single-ladder lifting bracket (7) to move in the second guide device (6).

2. Herringbone elevator according to claim 1, characterized in that said pulley assembly (9) comprises:

the fixed pulley block (91) is fixedly arranged at one end, close to the first guide device (4), in the second guide device (6);

the movable pulley block (92) is movably arranged at the other end of the second guide device (6) and is connected with the single-ladder lifting bracket (7), and the movable pulley block (92) is used for driving the single-ladder lifting bracket (7) to move;

and the connecting rope is connected with the fixed pulley block (91) and the movable pulley block (92), and when the connecting rope is tightened, the movable pulley block (92) moves close to or away from the fixed pulley block (91).

3. Herringbone elevator according to claim 2, characterized in that said set of movable pulleys (92) moves along said second guide chute (8).

4. Herringbone elevator according to claim 1, characterized in that said first guiding means (4) comprise:

a housing (41);

at least one group of limiting mechanisms (42) is arranged in the shell (41) and is parallel to the cross rod (22) of the single ladder (2), and each group of limiting mechanisms (42) is clamped on two sides of the long leg (21) of the single ladder (2).

5. Herringbone elevator according to claim 4, characterized in that said limit mechanism (42) comprises:

the two connecting rods (421) are arranged in parallel, and two ends of each connecting rod (421) are fixed on the shell (41);

at least two rollers (422) are rotatably arranged at the position of each connecting rod (421) corresponding to the single ladder (2).

6. Herringbone elevator according to claim 5, characterized in that said limit mechanism (42) further comprises: the rebounding mechanism is movably arranged on the shell (41) and has a first state of opening and supporting the cross rod (22) and a second state of retracting to be parallel to the inner wall of the shell (41).

7. Herringbone elevators according to any of claims 1-6, wherein said long leg (21) comprises several sub-bars connected to each other, each of said sub-bars being connected by a cross-slot fit.

8. A herringbone elevator as claimed in claim 7, further comprising: the supporting frame (10) is connected between the two groups of supporting ladders (1) and used for limiting the opening angles of the two groups of supporting ladders (1).

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