Movable high-altitude maintenance ladder stand mechanism for automatic stereoscopic warehouse roadway

Abstract

The invention discloses a movable high-altitude maintenance crawling ladder mechanism for an automatic stereoscopic warehouse roadway, and solves the problem of how to develop a maintenance crawling ladder which is convenient to move, safe and reliable. A pair of trolley longitudinal beam upper through holes (17) are formed in a trolley longitudinal beam (10) of the aerial walking trolley (5); a pair of step cross beam upper through holes (19) is formed in a step cross beam (18) at the uppermost end of the crawling ladder (11); a step cross beam (18) at the uppermost end of the crawling ladder (11) is movably connected with a trolley longitudinal beam (10) of the aerial walking trolley (5) through the lower ends of a pair of hanging bolts (20); a top L-shaped hanging bracket (14) and a top longitudinal rack (15) are fixedly arranged on the top end cross beam (3), an upper inverted-L-shaped hanging bracket (6) is connected to the upper end of the crawling ladder (11), a crawling ladder top positioning rack (16) is fixedly arranged on the bottom end face of a horizontal beam of the upper inverted-L-shaped hanging bracket (6), and stability of the crawling ladder is achieved.

Description

Technical Field

[0001] The invention relates to a stereoscopic warehouse, in particular to a mobile high-altitude maintenance ladder for an automatic stereoscopic warehouse lane. Background Art

[0002] In recent years, with the urgent demand of the logistics industry for efficient use of storage space, large-scale stereoscopic warehouses have been growing. In large-scale stereoscopic warehouses, stacker walking lanes are set up, and grid shelves are set on both sides of the lanes. The height of the grid shelves is about tens of meters. In the operation and maintenance of the stereoscopic warehouse, maintenance personnel are often required to enter the high-altitude grid shelves to maintain the equipment on the high cargo positions. In order to meet the maintenance requirements, the existing technology generally adopts fixed maintenance ladders or movable ladders designed in the lanes. Due to the narrow lane space between the shelves and the need to meet the walking requirements of the stacker, the fixed maintenance ladder needs to occupy a certain space. Generally, stereoscopic warehouses rarely use this method. The movable ladder has the problem of difficult movement and positioning, and requires two people to cooperate in operation and coordination, and there are many safety hazards during work. How to develop a maintenance ladder that can be easily moved, safe and reliable to adapt to the daily maintenance work of large stereoscopic warehouses has become an urgent problem to be solved on site. Summary of the invention

[0003] The invention provides a movable high-altitude maintenance ladder mechanism for an automatic stereoscopic warehouse lane, which solves the technical problem of how to develop a maintenance ladder that is conveniently movable and safe and reliable.

[0004] The present invention solves the above technical problems through the following technical solutions: The overall concept of the present invention is as follows: a ladder longitudinally movable overhead rail is arranged on the top surface of the lane between the shelves along the lane direction; an aerial trolley is suspended on the ladder longitudinally movable overhead rail; a pair of through holes on the hanging beam are arranged on the horizontal hanging beam of the aerial trolley in the vertical direction; a pair of through holes on the step beam are correspondingly arranged on the step beam at the top end of the ladder; the lower ends of a pair of hanging bolts pass through the through holes on the trolley longitudinal beam, the through holes on the step beam and the compression spring in sequence from top to bottom, and are then screwed together with nuts, so that the upper end of the ladder is movably connected to the hanging beam of the aerial trolley, so that the ladder is vertically suspended below the aerial trolley; an upper inverted L-shaped hanger is arranged at the upper end of the ladder. A top L-shaped hanger is arranged on the top beam on one side of the overhead rail, a top longitudinal rack is arranged on the top L-shaped hanger, and a ladder top positioning rack is arranged on the top of the upper inverted L-shaped hanger; when no one is on the ladder, the top longitudinal rack is separated from the ladder top positioning rack, so that the ladder can move freely along the tunnel driven by the aerial walking trolley; when the maintenance personnel climb up the ladder, the ladder compresses the compression spring downward under the action of the human body weight, so that the ladder moves downward, and the ladder top positioning rack engages with the top longitudinal rack, thereby realizing the fixed positioning of the ladder; a ladder bottom positioning rack is also arranged at the bottom of the ladder, and a ground longitudinal rack is arranged on the ground of the tunnel, and the two cooperate to realize the fixed positioning of the bottom end of the ladder.

[0005] A movable high-altitude maintenance ladder mechanism for an automatic three-dimensional warehouse lane comprises a stacker walking lane and a ladder arranged between adjacent shelves in the three-dimensional warehouse, top crossbeams are fixedly arranged at intervals on the top surface of the stacker walking lane, a ladder longitudinal moving ceiling rail is fixedly connected between each top crossbeam, and an aerial walking trolley is suspended on the ladder longitudinal moving ceiling rail; a pair of trolley longitudinal beam through holes are arranged on the trolley longitudinal beam of the aerial walking trolley along the vertical direction; a pair of step beam through holes are arranged on the step beam at the uppermost end of the ladder, and the pair of trolley longitudinal beam through holes and the pair of step beam through holes are arranged correspondingly up and down; The lower end of the hanging bolt passes through a pair of through holes on the trolley longitudinal beams, a pair of through holes on the step beams and the spring in sequence from top to bottom, and then is screwed together with the nut to movably connect the step beam at the upper end of the ladder with the trolley longitudinal beam of the aerial walking trolley; a top L-shaped hanger is fixedly provided on the top beam on one side of the longitudinally movable overhead rail of the ladder, a top longitudinal rack is fixedly provided on the top surface of the horizontal beam of the top L-shaped hanger, an inverted L-shaped hanger is connected to the upper end of the ladder, a ladder top positioning rack is fixedly provided on the bottom surface of the horizontal beam of the inverted L-shaped hanger, and the ladder top positioning rack is provided directly above the top longitudinal rack.

[0006] A longitudinal U-shaped groove limiting ground rail is fixedly arranged on the ground of the stacker walking lane just below the longitudinal moving overhead rail of the ladder, the lower end of the ladder is movably arranged in the U-shaped groove of the longitudinal U-shaped groove limiting ground rail, the lower end of the ladder is connected with a lower L-shaped hanger, a ladder bottom positioning rack is arranged on the lower bottom surface of the horizontal beam of the lower L-shaped hanger, and a ground longitudinal rack is fixedly arranged on the ground of the stacker walking lane just below the ladder bottom positioning rack.

[0007] The bottom end of the ladder is connected with a ladder bottom anti-drop limit strip, which is movably arranged in the U-shaped groove of the longitudinal U-shaped groove limit ground rail; a safety belt connecting ring is hung on the trolley longitudinal beam.

[0008] A static area is arranged outside the shelf on one side outside the stacker walking aisle, and a static area ceiling rail is arranged at the top of the static area. The static area ceiling rail and the ladder moving ceiling rail are arranged at an obtuse angle, and the static area ceiling rail and the ladder moving ceiling rail are connected together.

[0009] A working method of a mobile high-altitude maintenance ladder mechanism for an automatic three-dimensional warehouse lane. When a stacker leaves the stacker walking lane and a high-altitude cargo equipment on an adjacent shelf of the three-dimensional warehouse needs to be repaired, the ladder mechanism works in the following way: The first step is to move the ladder to the stacker walking lane. The ladder is hoisted and carried by the aerial walking trolley and moves toward the high-altitude cargo position for pre-inspection. During the movement, the spring connects the top step beam of the ladder to the bottom surface of the trolley longitudinal beam. At this time, the top positioning rack of the ladder is directly above the top longitudinal rack. The ladder can move freely along the longitudinal moving rail of the ladder under the hoisting of the aerial walking trolley. Step 2: When the ladder moves to the pre-maintenance high-altitude cargo position, the aerial trolley stops moving; the maintenance personnel climb up the ladder, and under the downward force of the maintenance personnel's weight, the top step beam compresses the spring downward, and the spring begins to shrink with the nut as the support point, causing the entire ladder to move downward, and the upward inverted L-shaped hanger connected to the upper end of the ladder also moves downward synchronously, causing the ladder top positioning rack on the upward inverted L-shaped hanger to drop to the top longitudinal rack, and the ladder top positioning rack is meshed with the top longitudinal rack, which plays a role in fixing the top of the ladder.

[0010] When the maintenance personnel climb up the vertical ladder, the lower L-shaped hanger also moves downward as the entire ladder moves downward, and the positioning rack at the bottom of the ladder drops to the longitudinal rack on the ground, and the positioning rack at the bottom of the ladder meshes with the longitudinal rack on the ground, thereby fixing the bottom of the ladder.

[0011] The maintenance personnel climb up the ladder that is locked and fixed at the top and bottom to the maintenance cargo position to perform equipment maintenance. When the maintenance is completed, the maintenance personnel go down the ladder to the bottom of the ladder and leave the ladder. Since the downward weight of the human body acting on the ladder is released, the spring bounces upward and raises the step beam at the top of the ladder. At this time, the positioning rack at the top of the ladder rises upward synchronously, so that the meshing of the top positioning rack of the ladder and the top longitudinal rack is released. At the same time, the positioning rack at the bottom of the ladder is also raised synchronously, so that the meshing of the bottom positioning rack of the ladder and the longitudinal rack on the ground is also released. The ladder moves freely to the next maintenance station under the suspension and load of the aerial walking trolley.

[0012] The invention arranges the longitudinal moving overhead rail of the ladder at one side of the overhead rail of the stacker, and arranges the longitudinal U-shaped groove limiting ground rail at one side of the ground rail of the stacker. The two rails will not hinder the normal operation of the stacker, and the upright ladder is hoisted by the aerial walking trolley, so that the ladder can move freely along the lane, and a pair of hanging bolts and springs are cleverly used to flexibly connect the aerial walking trolley with the step crossbeam at the top of the ladder, and the weight of the ladder climber is used to achieve locking and fixing of the upper and lower ends of the ladder, thereby ensuring the stability of the ladder; when no maintenance work is done on a daily basis, the ladder can be pushed to the static area at the end of the shelf, which does not affect the operation of equipment in the lane, saves space, is simple in equipment, and saves the manufacturing cost of the maintenance platform; when maintenance climbing is required, it is manually pushed to the walking lane of the stacker, which is convenient and quick. Before climbing, the maintenance personnel can first connect the safety belt with the anti-fall device hook to prevent accidental personnel falling during climbing, thereby ensuring the work safety of the personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention in a side view direction in a lane; Figure 3 It is a schematic diagram of the structure of the present invention in a top view; Figure 4 It is a schematic structural diagram of the ladder of the present invention in the main viewing direction; Figure 5 It is a schematic structural diagram of the ladder of the present invention in a side view direction; Figure 6 yes Figure 1 The schematic diagram of the structure when the part B is enlarged; Figure 7 yes Figure 2 A in the middle is a schematic diagram of the structure when the part is enlarged when there is no one on the ladder; Figure 8 yes Figure 2 A in the middle is a schematic diagram of the structure when there is a person on the ladder; Fig. 9yes Figure 1 The structural diagram of the part C in the middle when there is no one on the ladder; Fig.10 yes Figure 1 The structural diagram of the partial enlargement at point C in the middle when there is someone on the ladder. DETAILED DESCRIPTION

[0014] The present invention is described in detail below in conjunction with the accompanying drawings: A mobile high-altitude maintenance ladder mechanism for automatic three-dimensional warehouse lanes includes a stacker walking lane 2 and a ladder 11 arranged between adjacent shelves 1 in the three-dimensional warehouse, top crossbeams 3 are fixedly arranged at intervals on the top surface of the stacker walking lane 2, and a ladder longitudinal moving ceiling rail 4 is fixedly connected between each top crossbeam 3. An aerial walking trolley 5 is suspended on the ladder longitudinal moving ceiling rail 4. The aerial walking trolley 5 is composed of a trolley longitudinal beam 10 and two columns connected to the longitudinal beam. A trolley running wheel is arranged at the end, and the trolley running wheel is movably connected to the longitudinal moving ceiling rail 4 of the ladder; a pair of trolley longitudinal beam through holes 17 are arranged on the trolley longitudinal beam 10 of the aerial walking trolley 5 along the vertical direction; a pair of step beam through holes 19 are arranged on the step beam 18 at the uppermost end of the ladder 11, and the pair of trolley longitudinal beam through holes 17 and the pair of step beam through holes 19 are arranged correspondingly up and down; the lower ends of a pair of hanging bolts 20 pass through a pair of small The through hole 17 on the longitudinal beam of the vehicle, the through hole 19 on the pair of step beams and the spring 22 are screwed together with the nut 21, the screw head of the hanging bolt 20 is clamped on the top surface of the longitudinal beam 10 of the trolley, and the trolley longitudinal beam 10 and the step beam 18 are movably connected on the hanging screw between the screw head of the hanging bolt 20 and the nut 21. The spring 22 sleeved on the lower screw of the hanging bolt 20 pushes the step beam 18 upward to the lower bottom surface of the longitudinal beam 10 of the trolley; the top horizontal side of the ladder longitudinally moves the ceiling rail 4 A top L-shaped hanger 14 is fixedly provided on the beam 3, a top longitudinal rack 15 is fixedly provided on the top end surface of the horizontal beam of the top L-shaped hanger 14, an inverted L-shaped hanger 6 is connected to the upper end of the ladder 11, a ladder top positioning rack 16 is fixedly provided on the bottom end surface of the horizontal beam of the inverted L-shaped hanger 6, and the ladder top positioning rack 16 is arranged just above the top longitudinal rack 15, and the cooperation between the inverted L-shaped hanger 6 and the top L-shaped hanger 14 realizes the locking and fixation of the upper end of the ladder 11.

[0015] On the ground of the stacker traveling roadway 2 directly below the vertically moving overhead track 4 of the ladder, a longitudinally U-shaped groove limiting ground track 7 is fixedly arranged. The lower end of the ladder 11 is movably arranged in the U-shaped groove of the longitudinally U-shaped groove limiting ground track 7, so that the lower end of the ladder 11 will not swing. A lower L-shaped hanging bracket 8 is connected to the lower end of the ladder 11. A ladder bottom positioning rack 24 is arranged on the bottom surface of the horizontal beam of the lower L-shaped hanging bracket 8. On the ground of the stacker traveling roadway 2 directly below the ladder bottom positioning rack 24, a ground longitudinal rack 9 is fixedly arranged. The cooperation between the lower L-shaped hanging bracket 8 and the ground longitudinal rack 9 realizes the locking and fixing of the ladder 11.

[0016] A ladder bottom anti-disengagement limiting strip 25 is connected to the bottom end of the ladder 11. The ladder bottom anti-disengagement limiting strip 25 is movably arranged in the U-shaped groove of the longitudinally U-shaped groove limiting ground track 7; A safety belt connecting hanging ring 23 is suspended on the trolley longitudinal beam 10.

[0017] On one side outside the stacker traveling roadway 2, a static area 12 is arranged outside the shelf. On the top of the static area 12, a static area overhead track 13 is arranged. The static area overhead track 13 and the ladder moving overhead track 4 are arranged at an obtuse angle, and moreover, the static area overhead track 13 and the ladder moving overhead track 4 are connected together; Moving the ladder to the static area ensures the normal operation of the stacker.

[0018] A working method of a mobile high-altitude maintenance ladder mechanism for an automatic stereoscopic warehouse roadway. When the stacker leaves the stacker traveling roadway 2 and a high-altitude goods position device on a certain adjacent shelf 1 of the stereoscopic warehouse needs to be repaired, the ladder mechanism works according to the following method: First step: Move the ladder 11 into the stacker traveling roadway 2. Under the suspension and load-bearing of the aerial traveling trolley 5 in the air, the ladder 11 moves towards the high-altitude goods position to be repaired. During the movement, the spring 22 presses the top step cross beam 18 of the ladder 11 against the bottom surface of the trolley longitudinal beam 10. At this time, the ladder top positioning rack 16 is directly above the top longitudinal rack 15. Under the suspension of the aerial traveling trolley 5 in the air, the ladder 11 can move freely along the ladder longitudinal moving overhead track 4. Second step: When the ladder 11 moves to the high-altitude goods position to be repaired, the aerial traveling trolley 5 stops moving; The maintenance personnel climb onto the ladder 11. Under the downward action of the weight of the maintenance personnel, the top step cross beam 18 compresses the spring 22 downward. The spring 22 starts to contract with the nut 21 as the support point, causing the entire ladder 11 to move downward. The upper inverted L-shaped hanging bracket 6 connected to the upper end of the ladder 11 also moves downward synchronously, so that the ladder top positioning rack 16 on the upper inverted L-shaped hanging bracket 6 descends onto the top longitudinal rack 15, and moreover, the ladder top positioning rack 16 meshes with the top longitudinal rack 15, playing a role in fixing the top of the ladder 11.

[0019] When the maintenance personnel climb up the vertically arranged ladder 11, the lower L-shaped hanger 8 also moves downward with the downward movement of the entire ladder 11, and the positioning rack 24 at the bottom of the ladder drops to the ground longitudinal rack 9, and the positioning rack 24 at the bottom of the ladder is meshed with the ground longitudinal rack 9, thereby fixing the bottom of the ladder 11.

[0020] The maintenance personnel climb up the ladder 11 which is locked and fixed at the top and bottom to the maintenance cargo position to carry out equipment maintenance. When the maintenance is completed, the maintenance personnel go down the ladder to the bottom of the ladder and leave the ladder 11. Since the downward weight of the human body acting on the ladder 11 is released, the spring 22 bounces upward, and the step beam 18 at the uppermost end of the ladder 11 is raised. At this time, the top positioning rack 16 of the ladder is simultaneously raised upward, so that the meshing of the top positioning rack 16 of the ladder and the top longitudinal rack 15 is released. At the same time, the bottom positioning rack 24 of the ladder is also raised synchronously, so that the meshing of the bottom positioning rack 24 of the ladder and the ground longitudinal rack 9 is also released. The ladder 11 is freely moved to the next maintenance station under the suspension and load of the aerial walking trolley 5.

[0021] A static area 12 is arranged outside the shelf on one side outside the stacker walking lane 2, and a static area ceiling rail 13 is arranged at the top of the static area 12. The static area ceiling rail 13 and the ladder moving ceiling rail 4 are arranged at an obtuse angle, so that the ladder 11 will not hinder the normal operation of the stacker in the stacker walking lane 2.

Claims

1. A mobile high-altitude maintenance ladder mechanism for an automatic three-dimensional warehouse lane, comprising a stacker walking lane (2) and a ladder (11) arranged between adjacent shelves (1) in the three-dimensional warehouse, top crossbeams (3) are fixedly arranged at intervals on the top surface of the stacker walking lane (2), a ladder longitudinal moving rail (4) is fixedly connected between each top crossbeam (3), and an aerial walking trolley (5) is suspended on the ladder longitudinal moving rail (4); characterized in that: A pair of trolley longitudinal beam through holes (17) are provided on the trolley longitudinal beam (10) of the aerial trolley (5) in the vertical direction; a pair of step beam through holes (19) are provided on the step beam (18) at the uppermost end of the ladder (11); the pair of trolley longitudinal beam through holes (17) and the pair of step beam through holes (19) are provided in correspondence with each other; the lower ends of a pair of hanging bolts (20) pass through the pair of trolley longitudinal beam through holes (17), the pair of step beam through holes (19) and the spring (22) in sequence from top to bottom, and are then screwed together with nuts (21) to fix the ladder (11). The uppermost step crossbeam (18) is movably connected to the trolley longitudinal beam (10) of the aerial walking trolley (5); a top L-shaped hanger (14) is fixedly arranged on the top crossbeam (3) on one side of the longitudinally movable ceiling rail (4) of the ladder, a top longitudinal rack (15) is fixedly arranged on the top surface of the horizontal beam of the top L-shaped hanger (14), an inverted L-shaped hanger (6) is connected to the upper end of the ladder (11), a ladder top positioning rack (16) is fixedly arranged on the bottom surface of the horizontal beam of the inverted L-shaped hanger (6), and the ladder top positioning rack (16) is arranged just above the top longitudinal rack (15).

2. A mobile high-altitude maintenance ladder mechanism for automatic three-dimensional warehouse lanes according to claim 1 or 2, characterized in that: A longitudinal U-shaped groove limiting ground rail (7) is fixedly arranged on the ground of the stacker walking lane (2) directly below the ladder longitudinal moving overhead rail (4); the lower end of the ladder (11) is movably arranged in the U-shaped groove of the longitudinal U-shaped groove limiting ground rail (7); a lower L-shaped hanger (8) is connected to the lower end of the ladder (11); a ladder bottom positioning rack (24) is arranged on the lower bottom surface of the horizontal beam of the lower L-shaped hanger (8); and a ground longitudinal rack (9) is fixedly arranged on the ground of the stacker walking lane (2) directly below the ladder bottom positioning rack (24).

3. The mobile high-altitude maintenance ladder mechanism for automatic three-dimensional warehouse lanes according to claim 2 is characterized in that: A ladder bottom anti-drop limit strip (25) is connected to the bottom end of the ladder (11), and the ladder bottom anti-drop limit strip (25) is movably arranged in the U-shaped groove of the longitudinal U-shaped groove limit ground rail (7); and a safety belt connecting ring (23) is suspended on the trolley longitudinal beam (10).

4. The mobile high-altitude maintenance ladder mechanism for automatic three-dimensional warehouse lanes according to claim 3 is characterized in that: A stationary area (12) is arranged outside the shelf on one side outside the stacker walking lane (2), and a stationary area ceiling rail (13) is arranged at the top of the stationary area (12). The stationary area ceiling rail (13) and the ladder moving ceiling rail (4) are arranged at an obtuse angle, and the stationary area ceiling rail (13) and the ladder moving ceiling rail (4) are connected together.

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