Hidden ladder stand of fireman elevator

Abstract

The hidden ladder stand comprises a lift car body, a containing groove is formed in the side wall of the lift car body, an outlet is formed in the upper side wall of the lift car body, and sliding grooves are formed in the two side walls of the outlet; the ladder body comprises two parallel rods and a plurality of transverse rods, sliding blocks are fixed to the upper ends of the two parallel rods, and the sliding blocks are connected with the sliding grooves in an inserted mode; the two supporting leg assemblies comprise lifting sleeves, the lifting sleeves are arranged at the lower ends of the parallel rods in a sleeving mode, rotating supporting rods are rotationally connected to the front side walls and the rear side walls of the lifting sleeves, driven gears are fixed to the upper ends of the rotating supporting rods, and lifting transverse rods are fixed to the inner walls of lifting grooves; a rack fixing rod is fixed to the upper end of the driving rack, and the two sides of the driving rack are meshed with the two driven gears; the angle adjusting device is used for adjusting the position of the driving rack; and the height adjusting device is used for adjusting the height of the lifting sleeve. And as the lower ends of the four rotating support rods can play a supporting role, the structure is more stable.

Description

Technical Field

[0001] The invention belongs to the technical field of elevators, and in particular relates to a hidden ladder for firefighter elevators. Background Art

[0002] Fire elevators are elevators that can be used by firefighters to avoid collisions with escaping personnel, which would affect the rescue time and ensure that firefighters can reach the work site as soon as possible. According to the requirements of fire elevators, fire elevators must have escape exits.

[0003] The patent with the publication number CN217676241U discloses a firefighter elevator car wall, including a bottom plate, a rear plate fixedly connected to the upper end of the bottom plate, two sets of side plates fixedly connected to the upper end of the bottom plate, a placement slot provided on the side plate, a magnet provided in the placement slot, a ladder rotatably connected in the placement slot, and the rotation axis is on the side of the ladder away from the magnet, a first card slot provided on the back plate, two sets of buckle mechanisms provided on one side of the first card slot, a top plate fixedly connected to the upper end of the back plate, and an escape hatch fixedly connected to the upper end of the top plate. In the present invention, firstly pull the ladder to separate the ladder from the magnet, rotate the ladder, and when it rotates to the first card slot, it can press the push block, thereby compressing the second spring, and when the second spring is fully compressed into the third slide slot, the first buckle can be inserted into the through hole under the elastic force of the first spring, and the second buckle will extend out to clamp the ladder.

[0004] However, the above ladder is mainly stressed at the rotating part, and the structure is not stable enough. Summary of the invention

[0005] The purpose of the present invention is to provide a hidden ladder for firefighters' elevator, which has a more stable structure.

[0006] To achieve the above object, the present invention provides the following technical solution, a firefighter elevator hidden ladder, comprising: A car body, wherein a receiving groove is provided on the side wall of the car body, an outlet is provided on the upper side wall of the car body, and sliding grooves are provided on two side walls opposite to the outlet; A ladder body, the ladder body comprising two parallel rods and a plurality of cross rods fixed between the two parallel rods, a slider is fixed to the outer side of the upper ends of the two parallel rods, and the two sliders are respectively plugged into two slide grooves; Two support leg assemblies, the two support leg assemblies are respectively mounted on the lower ends of the two parallel rods, the lower ends of the parallel rods are provided with front and rear through slots and left and right through slots, and the support leg assemblies include: A lifting sleeve, wherein a lifting slot is provided in the lifting sleeve, the lifting sleeve is arranged at the lower end of the corresponding parallel rod, the front and rear side walls of the lifting sleeve are provided with rotation slots, each of the rotation slots is rotatably connected with a rotation support rod, the upper end of the rotation support rod is fixed with a driven gear, the inner wall of the lifting slot is fixed with a lifting cross bar, the lifting cross bar passes through the front and rear slots, and the lifting cross bar is provided with a lifting slot; A driving rack, wherein a rack fixing rod is fixed to the upper end of the driving rack, the rack fixing rod passes through the lifting slot, and driving teeth meshing with the two driven gears are provided on both sides of the driving rack; An angle adjustment device, the angle adjustment device is used to adjust the position of the driving rack relative to the lifting sleeve; A height adjustment device is used to adjust the height of the lifting sleeve.

[0007] Furthermore, the angle adjustment device comprises: A sleeve cross bar, wherein the sleeve cross bar is fixed between the two lifting sleeves; A rack cross bar, the rack cross bar being fixed between the upper ends of the two rack fixing rods; A rotating column is rotatably connected to the sleeve cross bar, an adjusting screw is fixed to the upper end of the rotating column, an adjusting threaded hole is provided on the rack cross bar, and the adjusting screw is threadedly connected to the adjusting threaded hole.

[0008] Further, the height adjustment device includes two height limiting cross bars, two sleeve cross grooves are provided on the sleeve cross bar, both ends of the two sleeve cross grooves are open, and the two height limiting cross bars are respectively plugged into the two sleeve cross grooves, and one end of the height limiting cross bar extending out of the sleeve cross groove is fixed with a connecting cross bar, a limiting protrusion is fixed on the connecting cross bar, a lifting notch is provided on the lifting sleeve, the connecting cross bar is located in the lifting notch, and a plurality of limiting grooves for the limiting protrusions to be plugged into are provided on the parallel rods, and the limiting grooves are arranged in sequence along the length direction of the parallel rods.

[0009] Furthermore, the height adjustment device also includes two limit springs, which are respectively installed in the two horizontal sliding grooves, one end of the limit spring abuts against the inner wall of the horizontal sliding groove, and the other end abuts against the height limit cross bar.

[0010] Furthermore, an extension rod is fixed on the height limiting cross bar, and a side extension groove is provided on the side wall of the sleeve cross sliding groove, and the extension rod extends out of the side extension groove.

[0011] Furthermore, the height adjustment device also includes a collar, which is sleeved on the rotating column, and one end of the extension rod extending out of the side extension slot is hinged with a pull rod, and one end of the pull rod away from the extension rod is hinged to the collar.

[0012] Furthermore, a lower groove is provided on the lower side wall of the slide groove.

[0013] Furthermore, an upper through groove is provided on the upper side wall of the slide groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) When the ladder needs to be used, the slider can move in the slide slot to move the ladder out of the receiving slot, and then the angle adjustment device is used to adjust the height of the driving rack relative to the lifting sleeve, so that the driving rack moves downward, driving the driven gear to rotate, thereby driving the two rotating support rods to rotate outward at the same time, and then the height adjustment device adjusts the height of the lifting sleeve so that the lower end of the rotating support rod abuts against the bottom surface of the car body. Since the lower ends of the four rotating support rods can play a supporting role, the structure is more stable; (2) The handle on the rotating column can drive the adjusting screw to rotate, and the rotation of the adjusting screw can drive the rack crossbar to move, thereby driving the two driving racks to move at the same time, that is, driving the four rotating support rods at the same time, and the angle adjustment of the rotating support rods is very convenient; (3) By pulling the collar downward, the collar drives the height limit crossbar to move horizontally through the pull rod and the extension rod, driving the limit protrusion to move out of the limit groove, so that the rotating column can be rotated by one hand to adjust the angle of the rotating support rod, and then the collar is pulled by this hand, and the operation can be realized by one hand, which is very convenient; (4) The slider is plugged into the lower groove to prevent the ladder body from moving when climbing. If the person needs to use the ladder body after climbing out of the exit, he only needs to move the slider to align with the upper groove, and then move the ladder body out of the exit. The slide groove cooperates with the lower groove and the upper groove to perform multiple functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the hidden ladder of the firefighter elevator of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure when the car body is removed; Figure 3 for Figure 2 A partial enlarged view of point I in the middle; Figure 4 for Figure 2 The top view of Figure 5 for Figure 4 Cross-sectional view at AA in the middle; Figure 6 for Figure 5 A partial enlarged view of position II in the middle; Figure 7 for Figure 5 A partial enlarged view of the part III in the middle; Figure 8 for Figure 4 Cross-section at the middle BB; Fig. 9 for Figure 8 A partial enlarged view of the IV in the middle; Fig.10 A schematic diagram of the connection structure of the drive rack, etc. Fig.11 for Fig.10 A partial enlarged view of the middle V; Fig.12 for Figure 1 A partial enlarged view of point VI in the middle.

[0016] In the figure, 1, car body; 2, receiving groove; 3, exit; 4, slide; 5, parallel rod; 6, cross bar; 7, slider; 8, front and rear through groove; 9, left and right through groove; 10, lifting sleeve; 11, lifting groove; 12, rotating through groove; 13, rotating support rod; 14, driven gear; 15, lifting cross bar; 16, lifting through groove; 17, driving rack; 18, rack fixing rod; 19, sleeve cross bar; 20, rack cross bar; 21, rotating column; 22, adjusting screw; 23, adjusting threaded hole; 24, height limiting cross bar; 25, sleeve cross slide; 26, connecting cross bar; 27, limiting protrusion; 28, lifting notch; 29, limiting groove; 30, limiting spring; 31, extension rod; 32, side extension groove; 33, collar; 34, pull rod; 35, lower groove; 36, upper through groove; 37, handle. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 12 The present invention provides a technical solution for a hidden ladder of a firefighter elevator.

[0019] A firefighter elevator hidden ladder, comprising: A car body 1, a receiving groove 2 is provided on the side wall of the car body 1, an outlet 3 is provided on the upper side wall of the car body 1, and slide grooves 4 are provided on the two side walls opposite to the outlet 3; The ladder body includes two parallel rods 5 and a plurality of cross rods 6 fixed between the two parallel rods 5. Slide blocks 7 are fixed to the outer sides of the upper ends of the two parallel rods 5. The two slide blocks 7 are respectively plugged into the two slide grooves 4. Two support leg assemblies, the two support leg assemblies are respectively installed at the lower ends of the two parallel rods 5, the lower ends of the parallel rods 5 are provided with front and rear through slots 8 and left and right through slots 9, and the support leg assemblies include: A lifting sleeve 10, wherein a lifting slot 11 is provided in the lifting sleeve 10, and the lifting sleeve 10 is sleeved on the lower end of the corresponding parallel rod 5, and the front and rear side walls of the lifting sleeve 10 are provided with rotating through slots 12, and each rotating through slot 12 is rotatably connected to a rotating support rod 13, and a driven gear 14 is fixed to the upper end of the rotating support rod 13, and a lifting cross bar 15 is fixed to the inner wall of the lifting slot 11, and the lifting cross bar 15 passes through the front and rear through slots 8, and a lifting through slot 16 is provided on the lifting cross bar 15; A driving rack 17, a rack fixing rod 18 is fixed to the upper end of the driving rack 17, the rack fixing rod 18 passes through the lifting slot 16, and driving teeth meshing with two driven gears 14 are provided on both sides of the driving rack 17; An angle adjustment device, the angle adjustment device is used to adjust the position of the driving rack 17 relative to the lifting sleeve 10; The height adjusting device is used to adjust the height of the lifting sleeve 10.

[0020] When the ladder is not in use, the ladder body moves into the receiving groove 2 to play a hidden role. When the ladder needs to be used, since the slider 7 can move in the slide groove 4, the ladder can be horizontally moved out of the receiving groove 2, and then the angle adjustment device is used to adjust the height of the driving rack 17 relative to the lifting sleeve 10, the driving rack 17 moves downward, driving the driven gear 14 to rotate, thereby driving the two rotating support rods 13 to rotate outward at the same time, and then the height adjustment device adjusts the height of the lifting sleeve 10 so that the lower end of the rotating support rod 13 abuts against the bottom surface of the car body 1. Since the lower ends of the four rotating support rods 13 can play a supporting role, the structure is more stable.

[0021] The angle adjustment device includes: A cross bar 19 is fixed between the two lifting sleeves 10 so that the two lifting sleeves 10 can be lifted and lowered simultaneously; The rack cross bar 20 is fixed between the upper ends of the two rack fixing rods 18, so as to drive the two driving racks 17 to rise and fall at the same time; The rotating column 21 is rotatably connected to the sleeve cross bar 19 , an adjusting screw 22 is fixed to the upper end of the rotating column 21 , an adjusting threaded hole 23 is provided on the rack cross bar 20 , and the adjusting screw 22 is threadedly connected to the adjusting threaded hole 23 .

[0022] The handle 37 on the rotating column 21 can drive the adjusting screw 22 to rotate, and the rotation of the adjusting screw 22 can drive the rack crossbar 20 to move, thereby driving the two driving racks 17 to move simultaneously, that is, driving the four rotating support rods 13 at the same time, and the angle adjustment of the rotating support rods 13 is very convenient.

[0023] The height adjustment device includes two height limiting cross bars 24, and two sleeve cross grooves 25 are provided on the sleeve cross bar 19. The two sleeve cross grooves 25 are open at both ends. The two height limiting cross bars 24 are respectively plugged into the two sleeve cross grooves 25. One end of the height limiting cross bar 24 extending out of the sleeve cross groove 25 is fixed with a connecting cross bar 26, and a limiting protrusion 27 is fixed on the connecting cross bar 26. A lifting notch 28 is provided on the lifting sleeve 10, and the connecting cross bar 26 is located in the lifting notch 28. A plurality of limiting grooves 29 for the limiting protrusions 27 to be plugged into are provided on the parallel rod 5, and the limiting grooves 29 are arranged in sequence along the length direction of the parallel rod 5.

[0024] By moving the height limiting cross bar 24, the limiting protrusion 27 can be plugged into the corresponding limiting groove 29, thereby limiting the position of the lifting sleeve 10. When the ladder body needs to be folded into the accommodating groove 2, the height limiting cross bar 24 is plugged into the limiting groove 29 at the high position. When only the support rod 13 needs to be rotated for support, the height limiting cross bar 24 is plugged into the limiting groove 29 at the low position.

[0025] like Figure 7 As shown, the height adjustment device also includes two limit springs 30, which are respectively installed in the two horizontal slide grooves 25. One end of the limit spring 30 abuts against the inner wall of the horizontal slide groove 25, and the other end abuts against the height limit cross bar 24. When the limit protrusion 27 needs to be moved out of the limit groove 29, it is necessary to overcome the elastic force of the limit spring 30 to prevent the limit protrusion 27 from easily moving out of the limit groove 29.

[0026] like Figure 7 As shown, an extension rod 31 is fixed on the height limiting cross bar 24 , and a side extension groove 32 is provided on the side wall of the sleeve cross slide groove 25 , and the extension rod 31 extends out of the side extension groove 32 .

[0027] like Figure 7 As shown, the height adjustment device also includes a collar 33 , which is sleeved on the rotating column 21 , and one end of the extension rod 31 extending out of the side extension slot 32 is hinged with a pull rod 34 , and one end of the pull rod 34 away from the extension rod 31 is hinged with the collar 33 .

[0028] By pulling the collar 33 downward, the collar 33 drives the height limiting cross bar 24 to move horizontally through the pull rod 34 and the extension rod 31, and drives the limiting protrusion 27 to move out of the limiting groove 29. Since the collar 33 is sleeved on the rotating column 21, the rotating column 21 can be rotated by one hand to adjust the angle of the rotating support rod 13, and then the collar 33 is pulled by this hand to move the limiting protrusion 27 out of the limiting groove 29, and then the lifting sleeve 10 is moved to a suitable height and the collar 33 is released, and the limiting spring 30 drives the height limiting cross bar 24 to move, so that the limiting protrusion 27 is plugged into the corresponding limiting groove 29, and the operation can be realized by one hand.

[0029] like Figure 1 and Fig.12 As shown, the lower side wall of the chute 4 is provided with a lower groove 35. The ladder body is moved so that the slider 7 is plugged into the lower groove 35 to prevent the ladder body from moving when climbing. When the ladder body needs to be folded, it is only necessary to lift it up so that the slider 7 moves out of the lower groove 35, and then move the slider 7 to the corresponding position of the chute 4.

[0030] like Figure 1 and Fig.12 As shown, the upper side wall of the slide groove 4 is provided with an upper groove 36. If a person needs to use the ladder body after climbing out of the exit 3, he only needs to move the slider 7 to align with the upper groove 36, and then move the ladder body out of the exit 3.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A firefighter elevator hidden ladder, characterized in that: include: A car body, wherein a receiving groove is provided on the side wall of the car body, an outlet is provided on the upper side wall of the car body, and sliding grooves are provided on two side walls opposite to the outlet; A ladder body, the ladder body comprising two parallel rods and a plurality of cross rods fixed between the two parallel rods, a slider is fixed to the outer side of the upper ends of the two parallel rods, and the two sliders are respectively plugged into two slide grooves; Two support leg assemblies, the two support leg assemblies are respectively mounted on the lower ends of the two parallel rods, the lower ends of the parallel rods are provided with front and rear through slots and left and right through slots, and the support leg assemblies include: A lifting sleeve, wherein a lifting slot is provided in the lifting sleeve, the lifting sleeve is arranged at the lower end of the corresponding parallel rod, the front and rear side walls of the lifting sleeve are provided with rotation slots, each of the rotation slots is rotatably connected with a rotation support rod, the upper end of the rotation support rod is fixed with a driven gear, the inner wall of the lifting slot is fixed with a lifting cross bar, the lifting cross bar passes through the front and rear slots, and the lifting cross bar is provided with a lifting slot; A driving rack, wherein a rack fixing rod is fixed to the upper end of the driving rack, the rack fixing rod passes through the lifting slot, and driving teeth meshing with the two driven gears are provided on both sides of the driving rack; An angle adjustment device, the angle adjustment device is used to adjust the position of the driving rack relative to the lifting sleeve; A height adjustment device is used to adjust the height of the lifting sleeve.

2. A firefighter elevator hidden ladder according to claim 1, characterized in that: The angle adjustment device comprises: A sleeve cross bar, wherein the sleeve cross bar is fixed between the two lifting sleeves; A rack cross bar, the rack cross bar being fixed between the upper ends of the two rack fixing rods; A rotating column is rotatably connected to the sleeve cross bar, an adjusting screw is fixed to the upper end of the rotating column, an adjusting threaded hole is provided on the rack cross bar, and the adjusting screw is threadedly connected to the adjusting threaded hole.

3. A firefighter elevator hidden ladder according to claim 2, characterized in that: The height adjustment device includes two height limiting cross bars, two sleeve cross grooves are provided on the sleeve cross bar, both ends of the two sleeve cross grooves are open, and the two height limiting cross bars are respectively plugged into the two sleeve cross grooves, and one end of the height limiting cross bar extending out of the sleeve cross groove is fixed with a connecting cross bar, a limiting protrusion is fixed on the connecting cross bar, a lifting notch is provided on the lifting sleeve, and the connecting cross bar is located in the lifting notch, and a plurality of limiting grooves for the limiting protrusions to be plugged into are provided on the parallel rods, and the limiting grooves are arranged in sequence along the length direction of the parallel rods.

4. A firefighter elevator hidden ladder according to claim 3, characterized in that: The height adjustment device also includes two limit springs, which are respectively installed in the two horizontal sliding grooves. One end of the limit spring abuts against the inner wall of the horizontal sliding groove, and the other end abuts against the height limit cross bar.

5. A firefighter elevator hidden ladder according to claim 4, characterized in that: An extension rod is fixed on the height limiting cross bar, and a side extension groove is provided on the side wall of the sleeve cross sliding groove, and the extension rod extends out of the side extension groove.

6. A firefighter elevator hidden ladder according to claim 5, characterized in that: The height adjustment device also includes a collar, which is sleeved on the rotating column. One end of the extension rod extending out of the side extension slot is hinged with a pull rod, and one end of the pull rod away from the extension rod is hinged to the collar.

7. A firefighter elevator hidden ladder according to claim 1, characterized in that: The lower side wall of the slide groove is provided with a lower groove.

8. A firefighter elevator hidden ladder according to claim 1, characterized in that: An upper through groove is provided on the upper side wall of the slide groove.

Images