CN220953091U - Liftable formula limit for height frame - Google Patents
Liftable formula limit for height frame Download PDFInfo
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- CN220953091U CN220953091U CN202322730077.1U CN202322730077U CN220953091U CN 220953091 U CN220953091 U CN 220953091U CN 202322730077 U CN202322730077 U CN 202322730077U CN 220953091 U CN220953091 U CN 220953091U
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- 241000282326 Felis catus Species 0.000 description 9
- 238000009434 installation Methods 0.000 description 6
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Abstract
The utility model discloses a liftable height limiting frame, which comprises: two groups of upright posts which are arranged in parallel are respectively arranged on two foundations; each group of upright posts comprises two fixed upright posts and two movable upright posts, the two fixed upright posts are arranged at the top of the foundation in parallel, the two movable upright posts are respectively embedded into the two fixed upright posts, and the two movable upright posts are respectively connected with the two fixed upright posts through lifting mechanisms; two cross beams are respectively arranged at the tops of the two movable stand columns of each group, the first ends of the cross beams are connected with the movable stand columns, the second end parts of the cross beams are provided with flanges, and the cross beams at the tops of the two groups of movable stand columns are connected through the flanges; according to the lifting height limiting frame, the heights of the two groups of movable stand columns are respectively adjusted, and the opposite cross beams are connected through the flanges, so that the lifting height limiting frame forms an integral structure, vehicles with different heights can be allowed to pass through, and the application range of the height limiting frame is enlarged.
Description
Technical Field
The utility model relates to the technical field of traffic safety facilities, in particular to a lifting type height limiting frame.
Background
In road construction, usually, the highway entrance, tunnel entrance and exit, bridge head of bridge and other parts are provided with height limiting frames to prevent overload of vehicles and protect road infrastructure safety or driving safety. In the structure of the height limiting frame, most of the height limiting frames have fixed heights, and the middle part of a cross beam of each height limiting frame is provided with a height limiting mark for reminding passing vehicles; however, such height-limiting frames can only allow vehicles within a fixed height range to pass through, and if the vehicle height exceeds the height of the height-limiting frame cross beam, the height-limiting frame can be damaged, and the driving safety is endangered; in emergency occasions (such as fire fighting, rescue and the like) where certain vehicles must pass, the height limiting frame with fixed height cannot enable the vehicles such as fire fighting, rescue and the like to pass, so that the application range of the height limiting frame with fixed height is limited.
Disclosure of utility model
At least one of the objects of the present utility model is to provide a height-adjustable frame, which can allow vehicles with different heights to pass through, so as to expand the application range of the height-adjustable frame.
In order to achieve the above object, the present utility model adopts a technical scheme including the following aspects.
A liftable height-limiting frame, comprising: two groups of upright posts which are arranged in parallel are respectively arranged on two foundations; each group of upright posts comprises two fixed upright posts and two movable upright posts, the two fixed upright posts are arranged at the top of the foundation in parallel, the two movable upright posts are respectively embedded into the two fixed upright posts, and the two movable upright posts are respectively connected with the two fixed upright posts through lifting mechanisms;
Two crossbeams are respectively arranged at the tops of the two movable upright posts of each group, the first end of each crossbeam is connected with the movable upright post, the second end of each crossbeam is provided with a flange, and the crossbeams at the tops of the two groups of movable upright posts are connected through the flange.
Preferably, the lifting mechanism comprises a driving shaft and two mutually parallel driven shafts, wherein the driving shaft and the driven shafts are mutually perpendicular, and the two driven shafts are respectively arranged in the two fixed upright posts;
The driving shaft is provided with two first gears, the positions of the two first gears respectively correspond to the positions of the two fixed upright posts, and the two first gears are respectively positioned in the two fixed upright posts;
The first end of each driven shaft is provided with a second gear, the second ends of the two driven shafts are respectively connected with the two movable stand columns, and the first gears are meshed with the second gears.
Preferably, a fixing piece is arranged on the inner side surface of the fixed upright post and close to the bottom, and the second end of the driven shaft penetrates through the fixing piece and is connected with the movable upright post; the driven shaft is provided with external threads in the height direction, and the arrangement part of the external threads is the length between the second end of the driven shaft and the fixing piece.
Preferably, a connecting block is arranged on the outer side surface of the movable upright post, a threaded through hole matched with the driven shaft is axially formed in the connecting block, the second end of the driven shaft is in threaded connection with the connecting block, and the connecting block is arranged close to the bottom of the movable upright post.
Preferably, the bottom of the movable upright post is a connecting section, the connecting section is of a solid structure, a threaded through hole is axially formed in the center of the connecting section, and the second end of the driven shaft is in threaded connection with the connecting section.
Preferably, the driving shaft between the two fixed upright posts of each group is supported by one or more supporting seats, and the supporting seats are fixed at the top of the foundation;
In each group of fixed upright posts, a first through hole is radially formed in the position, close to the bottom, of each of the two fixed upright posts, the first through hole is a circular through hole, the aperture of the first through hole is larger than that of the first gear, the first end of the driving shaft stretches into one of the fixed upright posts, the second end stretches into the other fixed upright post, and the end part of the second end of the driving shaft penetrates out of the fixed upright post; the second end part of the driving shaft is provided with a rotary table, and a handle is arranged on the rotary table.
Preferably, the bottom of the fixed upright post is integrally provided with a fixed seat, and the fixed upright post is arranged on the foundation through the fixed seat; the foundation is embedded with embedded bolts, and the fixing seat is fixed with the embedded bolts on the foundation through bolts.
Preferably, a plurality of connecting rods are arranged in parallel between the two movable upright posts in the same group, and two ends of each connecting rod are respectively connected with the movable upright posts in a welding mode;
A strip-shaped gap is formed in the height direction of the fixed upright post, the width of the strip-shaped gap is not smaller than the outer diameter of the connecting rod, and the length of the strip-shaped gap is not smaller than the height of the movable upright post;
The fixed upright post is characterized in that a cat ladder is arranged on the outer side face of the fixed upright post, the cat ladder is perpendicular to the fixed upright post, the cat ladder is connected with the fixed upright post in a welding mode, and the setting direction of the cat ladder is parallel to the setting direction of the cross beam.
Preferably, a plurality of connecting rods are arranged in parallel between the two cross beams of each group, and the connecting rods are mutually parallel; reinforcing rods are arranged between two adjacent connecting rods, and the reinforcing rods, the connecting rods and the cross beams are arranged in a triangular mode.
Preferably, the crossbeam is hollow structure, is provided with the enhancement horizontal pole between two relative crossbeams, the movable stand is close to the radial second through-hole that is provided with in top position, the aperture of second through-hole is not less than the enhancement horizontal pole diameter, the crossbeam is connected in the second through-hole department at movable stand top, the enhancement horizontal pole passes two relative crossbeams simultaneously, two relative movable stand are stretched out respectively at the both ends of enhancement horizontal pole, the part that the enhancement horizontal pole stretched out the movable stand is fixed on the movable stand through the buckle with the adaptation of enhancement horizontal pole external diameter.
In summary, due to the adoption of the technical scheme, the utility model has at least the following beneficial effects:
By arranging two groups of upright posts, each group of upright posts comprises two fixed upright posts and two movable upright posts, the two movable upright posts are respectively embedded into the two fixed upright posts, and the two movable upright posts are respectively connected with the two fixed upright posts through lifting mechanisms; the height of each group of movable stand columns can be adjusted through the lifting mechanism respectively, and after the height adjustment of the two groups of movable stand columns is consistent, the cross beams at the tops of the two groups of movable stand columns are connected through the flange, so that the lifting type height limiting frame forms an integral structure. The height of the cross beam is adjusted by adjusting the height of the movable upright post, vehicles with different heights can be allowed to pass through, and the application range of the lifting height limiting frame is enlarged.
Through setting up the enhancement horizontal pole, strengthen the horizontal pole and pass two relative crossbeams, fix on the movable stand through the buckle, two relative crossbeams of rethread flange joint exert the wholeness of crossbeam and improve the security of limit for height frame.
Drawings
Fig. 1 is a front view of a liftable height limiter according to an exemplary embodiment of the present utility model.
Fig. 2 is a side view of a liftable height limiter according to an exemplary embodiment of the present utility model.
Fig. 3 is a top view of a beam structure of a liftable height limiter according to an exemplary embodiment of the present utility model.
Fig. 4 is a schematic view of an elevating mechanism of an elevating height-limiting frame according to an exemplary embodiment of the present utility model.
Fig. 5 is a schematic view of another connection mode of the lifting mechanism of the lifting height limiting frame according to the exemplary embodiment of the present utility model.
The marks in the figure are as follows: the device comprises a fixed upright post, a fixed piece 11, a fixed seat 12, a strip-shaped notch 13, a movable upright post 2, a connecting rod 21, a second through hole 22, a connecting block 23, a connecting block 24, a cross beam 3, a connecting rod 31, a reinforcing rod 32, a flange 4, a lifting mechanism 5, a driving shaft 51, a first gear 510, a driven shaft 52, a second gear 520, a ladder 6, a foundation 7, a pre-buried bolt 71, a lifting lug 72, a supporting seat 8, a ladder 9 and a reinforcing cross rod 10.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, so that the objects, technical solutions and advantages of the present utility model will become more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1 to 3, the liftable height limiting frame according to the exemplary embodiment of the utility model comprises two groups of upright posts which are arranged in parallel, wherein the two groups of upright posts are respectively arranged on two foundations 7, each group of upright posts comprises two fixed upright posts 1 and two movable upright posts 2, the two fixed upright posts 1 are arranged at the top of the foundations 7 in parallel, the two fixed upright posts 1 are respectively arranged near two ends of the foundations 7 along the length direction of the foundations 7, the two movable upright posts 2 are respectively embedded into the two fixed upright posts 1, and the two movable upright posts 2 are respectively connected with the two fixed upright posts 1 through lifting mechanisms 5, so that the movable upright posts 2 move up and down along the fixed upright posts 1; the tops of the two movable upright posts 2 of each group are respectively provided with a cross beam 3, the first end of the cross beam 3 is connected with the movable upright posts 2, the second end part of the cross beam 3 is provided with a flange 4, and the cross beams 3 at the tops of the two groups of movable upright posts 2 are connected through the flange 4. The fixed upright 1 and the movable upright 2 are hollow structures, and the inner diameter of the fixed upright 1 is not smaller than the outer diameter of the movable upright 2.
Referring to fig. 4 and 5, the lifting mechanism 5 includes a driving shaft 51 and two driven shafts 52 parallel to each other, the driving shaft 51 and the driven shafts 52 are perpendicular to each other, and the two driven shafts 52 are respectively disposed in the two fixed columns 1. The driving shaft 51 is provided with two first gears 510, the positions of the two first gears 510 respectively correspond to the positions of the two fixed upright posts 1, and when the two fixed upright posts 1 are arranged on the foundation 7, the two first gears 510 are respectively positioned in the two fixed upright posts 1; the first end part of each driven shaft 52 is provided with a second gear 520, the second ends of the two driven shafts 52 are respectively connected with the two movable upright posts 2, and the first gear 510 is meshed with the second gear 520; the first gear 510 and the second gear 520 are bevel gears, and the pitch diameter of the first gear 510 is smaller than the pitch diameter of the second gear.
When the driving shaft 51 rotates, the driving shaft 51 drives the two driven shafts 52 to rotate together, and the two driven shafts 52 respectively drive the two movable upright posts 2 to move up and down simultaneously, so that the lifting process of the movable upright posts 2 is realized; because the two driven shafts 52 are simultaneously driven by the driving shaft 51, the two movable upright posts 2 can synchronously lift, thereby improving the stability of the movable upright posts 2 in the lifting process.
A fixing piece 11 is arranged on the inner side surface of the fixed upright 1 near the bottom, the fixing piece 11 is welded or integrally connected in the fixed upright 1, and the second end of the driven shaft 52 penetrates through the fixing piece 11 and is connected with the movable upright 2; the fixing member 11 can support the driven shaft 52, and stability of the driven shaft 52 in the fixing upright 1 is improved. Since the driven shaft 52 is to rotate on the fixing member 11, in order to prevent the surface of the driven shaft from being worn, a bearing may be provided on the fixing member 11, and the second end of the driven shaft 52 passes through the bearing on the fixing member 11 and is connected to the movable pillar 2.
The driven shaft 52 is provided with external threads in the height direction, the arrangement position of the external threads is the length between the second end of the driven shaft 52 and the top of the fixing piece 11, and the fixing piece 11 can also play a role in limiting the moving position of the movable stand column.
Referring to fig. 4, when the driven shaft 52 is connected with the movable upright 2, a connection block 23 may be disposed on the outer surface of the movable upright 2, a threaded through hole adapted to the driven shaft 52 is axially disposed on the connection block 23, and the second end of the driven shaft 52 is in threaded connection with the connection block 23. When the driven shaft 52 rotates, the connecting block 23 can drive the movable upright post 2 to move up and down. The connecting block 23 and the movable upright post 2 are integrally formed or connected in a welding mode so as to improve the connection strength of the connecting block 23 and the movable upright post 2; the connecting block 23 is arranged near the bottom of the movable upright 2 to improve the lifting height of the movable upright 2.
Referring to fig. 5, when the driven shaft 52 is connected with the movable upright 2, the bottom of the movable upright 2 may be set to be a thickened portion (the thickness may be 20-40 cm), the thickened portion is a connection section 24, the connection section 24 is of a solid structure, a threaded through hole is axially formed in the center of the connection section 24, and the second end of the driven shaft 52 is in threaded connection with the connection section 24.
Referring to fig. 4 and 5, the driving shaft 51 between the two fixing posts 1 is supported by one or more supporting seats 8, and the supporting seats 8 are fixed on the top of the foundation 7. In each set of fixing posts 1, a first through hole is radially arranged at a position, close to the bottom, of each fixing post 1, the first through hole is a circular through hole (a rectangular hole or a U-shaped hole) and is Kong Kuanda the diameter of the first gear 510 (the maximum diameter of the first gear or the diameter of the top circle) so that the first gear 510 on the driving shaft 51 penetrates through the first through hole and is installed in the fixing post 1. The first end of the driving shaft 51 stretches into one of the fixed upright posts 1, and the second end stretches into the other fixed upright post 1, so that a first gear 510 on the driving shaft 51 is meshed with a second gear 520 on a driven shaft 52 in the fixed upright post; the second end of the driving shaft penetrates out of the fixed upright post, the second end of the driving shaft 51 is provided with a rotary table, a handle is arranged on the rotary table, and the driving shaft 51 can be rotated by rotating the handle. The second end of the driving shaft 51 may also be connected to a motor, so that the motor drives the driving shaft 51 to rotate.
The bottom of the fixed upright post 1 is integrally provided with a fixed seat 12, and the fixed upright post 1 is arranged on the foundation 7 through the fixed seat 12; specifically, the foundation 7 is pre-embedded with pre-embedded bolts 71, the positions and the number of the pre-embedded bolts 71 are determined according to the installation positions of the fixed upright posts 1 and the installation positions of the supporting seats 8, the depth of the pre-embedded bolts 71 is determined according to the design and construction requirements, and when the fixed upright posts 1 are installed, the fixed seat 12 is fixed with the pre-embedded bolts 71 on the foundation 7 through bolts. When the support base 8 is mounted on the foundation 7, the support base 8 is also fixed by pre-buried bolts and matched nuts (not shown in the figure).
Referring to fig. 2, in order to improve stability of the movable upright structure, a plurality of connecting rods 21 are disposed in parallel between two movable uprights 2 of the same group, and two ends of each connecting rod 21 are respectively connected with the movable uprights 2 in a welding manner. The connecting rod 21 not only enhances the structural strength of the movable upright post 2, but also facilitates the installation and construction of installation personnel; when the height limiting frame is installed, an installer can climb onto the cross beams 3 at the tops of the movable stand columns 2 through the connecting rods 21 of the two groups of stand columns respectively, and the two groups of cross beams 3 are connected through the flanges 4 (refer to fig. 3). When two movable columns 2 are connected through a connecting rod 21, in order to facilitate the movable column 2 to move up and down in the fixed column 1, a bar-shaped notch 13 is arranged in the height direction of the fixed column 1, the width of the bar-shaped notch 13 is not smaller than the outer diameter of the connecting rod, and the length of the bar-shaped notch 13 is not smaller than the height of the movable column 2 (refer to fig. 2, 4 and 5).
For the constructor movable stand 2 from top to bottom of being convenient for, still be provided with cat ladder 9 on the fixed stand 1 lateral surface, refer to fig. 1, cat ladder 9 perpendicular to fixed stand 1 sets up, and cat ladder 9 passes through welded connection with fixed stand 1, and cat ladder 9 setting direction is parallel with crossbeam 3 setting direction.
Referring to fig. 3, the top of each group of two movable columns 2 is provided with a cross beam 3, the cross beams 3 are connected with the movable columns 2 in a welding manner, and the cross beams 3 are of hollow structures (for example, the cross beams can be hollow steel pipes); a plurality of connecting rods 31 are arranged in parallel between the two cross beams 3 of each group, the connecting rods 31 are mutually parallel, and the connecting rods 31 are connected with the cross beams 3 in a welding mode; a reinforcing rod 32 is arranged between two adjacent connecting rods 31, and the reinforcing rods 32, the connecting rods 31 and the cross beam 3 are arranged in a triangular shape so as to enhance the structural strength of the cross beam.
Referring to fig. 1 and 3, in the two sets of cross beams, a reinforcing cross beam 10 is arranged between two opposite cross beams 3, a second through hole 22 is radially arranged at a position, close to the top, of the movable upright 2, the aperture of the second through hole 22 is not smaller than the diameter of the reinforcing cross beam 10, the cross beam 3 is connected at the position of the second through hole 22 at the top of the movable upright 2, the reinforcing cross beam 10 simultaneously passes through the two opposite cross beams 3 from the second through hole 22, two opposite movable upright 2 are respectively extended from two ends of the reinforcing cross beam 10, and the part, extending out of the movable upright 2, of the reinforcing cross beam 10 can be fixed on the movable upright 2 through a buckle matched with the outer diameter of the reinforcing cross beam 10 so as to ensure that the reinforcing cross beam 10 cannot move. When the cross beams are connected through the flanges, the reinforcing cross beams 10 can support the cross beams, and when two groups of cross beams are connected into an integral structure through the flanges, the safety of connecting the cross beams at the tops of the movable stand columns by constructors can be improved through the reinforcing cross beams 10.
Referring to fig. 2, the top of the foundation 7 is further provided with a lifting lug 72, the lifting lug 72 is arranged at the top center position of the foundation 7, and the foundation 7 can be lifted to the setting position of the height limiting frame through the lifting lug 72; the lifting lug 72 is lower than the mounting height of the driving shaft 51 so as to avoid interference with the driving shaft in the subsequent process of mounting the driving shaft and influence the mounting process. The lifting lug 72 can be formed in a pre-buried mode, and can also be formed by cast-in-situ with the foundation 7; lifting lugs 72 may also be provided on the sides of the foundation 7 to facilitate lifting of the foundation 7.
The installation process of the liftable height limiting frame of the exemplary embodiment of the utility model comprises the following steps:
Firstly, hoisting two foundations 7 to the installation position of a height limiting frame (the top of the foundations 7 is provided with embedded bolts for installing a fixed upright column 1 and a supporting seat 8); after the foundation 7 is hoisted, a supporting seat 8 for supporting a driving shaft 52 is arranged at the top of the foundation 7.
After the supporting seat 8 is installed, two movable stand columns 2 are respectively penetrated into two fixed stand columns 1, then a driven shaft 52 is installed in the fixed stand columns 1, and the second end of the driven shaft 52 penetrates through a fixed piece 11 of the fixed stand columns 1 and is connected to a connecting block 23 of the movable stand columns 2 or a connecting section 24 of the movable stand columns 2; the height between the first end of the driven shaft 52 and the bottom of the fixing member 11 is adjusted, and when the fixing column 1 is mounted on the foundation 7, the second gear 520 at the first end of the driven shaft 52 can be meshed with the first gear 510 on the driving shaft.
After the movable upright posts 2 are arranged in the fixed upright posts 1, the two fixed upright posts 1 are arranged on the foundation 7, and the fixed base 12 at the bottom of the fixed upright posts 1 is arranged at the top of the foundation 7 through the embedded bolts 71.
After the fixing upright 1 is installed, two ends of the driving shaft 51 respectively penetrate into the fixing upright 1 from the first through holes, the first gear 510 is meshed with the second gear 520 of the driven shaft 52, then the driving shaft 51 is fixed through the supporting seat 8, and the handle at the second end of the driving shaft 51 extends out of the fixing upright 1.
After the first group of upright posts are installed, the second group of upright posts are installed in the same way; after the two groups of upright posts are installed, the heights of the two groups of movable upright posts 2 are respectively adjusted, so that the heights of the two groups of movable upright posts 2 are kept consistent. The height adjustment mode of the first group of movable upright posts 2 is as follows: the handle at the second end of the driving shaft 51 exposed out of the fixed upright 1 rotates clockwise to enable the driving shaft 51 to rotate, the driving shaft 51 drives the first gear 510 to rotate, and the first gear 510 is meshed with the second gears 520, so that the first gear 510 drives the two second gears 520 to synchronously rotate, and the two second gears 520 drive the two driven shafts 52 to synchronously rotate; because the driven shaft 52 is provided with external threads, the driven shaft 52 is in threaded connection with the connecting block 23 or the connecting section 24 of the movable upright post 2, and therefore, in the process of rotating the driven shaft 52, the movable upright post 2 can move upwards or downwards along the driven shaft 52, and thus, can move upwards or downwards along the fixed upright post 1; when the handle is rotated clockwise, the movable upright 2 moves upwards along the driven shaft 52, so that the height of the movable upright 2 is increased, and when the handle is rotated anticlockwise, the movable upright 2 moves downwards along the driven shaft 52, so that the height of the movable upright 2 is reduced. After the first group of movable upright posts 2 are adjusted to a preset height, the height of the second group of movable upright posts 2 is adjusted in the same way as the first group of movable upright posts 2.
The bottom of the outer side surface of the movable upright post 2 is provided with a mark (the mark can be painted on the outer side surface of the movable upright post by adopting colored paint), when the movable upright post 2 rises to the marked position, the handle is stopped to rotate, so that the movable upright post is prevented from unscrewing out of the driven shaft, and the safety of the movable upright post 2 in the rising process is improved.
When the two groups of movable upright posts 2 are all adjusted to the same height, the two groups of movable upright posts are climbed to the top of the movable upright posts 2 through the crawling ladder 9 and the connecting rod 21, the reinforcing cross rod 10 penetrates from the second through holes 22 of the movable upright posts to the two opposite cross beams 3, and two ends of the reinforcing cross rod 10 are respectively fixed with the movable upright posts 2 through buckles, so that the reinforcing cross rod 10 is prevented from moving when the cross beams are connected, and the construction safety is prevented from being influenced; after the reinforcing cross rod 10 is fixed, the supporting frame climbs to the top of the movable upright post 2 through the cat ladder 9 and the connecting rod 21, and the two opposite cross beams 3 are connected through the flange 4, so that the installation of the liftable height limiting frame is completed.
The foregoing is a detailed description of specific embodiments of the utility model and is not intended to be limiting of the utility model. Various alternatives, modifications and improvements will readily occur to those skilled in the relevant art without departing from the spirit and scope of the utility model.
Claims (10)
1. A liftable height limiting frame, comprising: two groups of upright posts which are arranged in parallel are respectively arranged on two foundations (7); each group of upright posts comprises two fixed upright posts (1) and two movable upright posts (2), the two fixed upright posts (1) are arranged at the top of the foundation (7) in parallel, the two movable upright posts (2) are respectively embedded into the two fixed upright posts (1), and the two movable upright posts (2) are respectively connected with the two fixed upright posts (1) through lifting mechanisms (5);
Two crossbeams (3) are respectively arranged at the tops of two movable upright posts (2) of each group, the first end of each crossbeam (3) is connected with the movable upright post (2), the second end part of each crossbeam (3) is provided with a flange (4), and the crossbeams (3) at the tops of the two groups of movable upright posts (2) are connected through the flanges (4).
2. The lifting height limiting frame according to claim 1, wherein the lifting mechanism (5) comprises a driving shaft (51) and two mutually parallel driven shafts (52), the driving shaft (51) and the driven shafts (52) are mutually perpendicular, and the two driven shafts (52) are respectively arranged in the two fixed upright posts (1);
The driving shaft (51) is provided with two first gears (510), the positions of the two first gears (510) respectively correspond to the positions of the two fixed upright posts (1), and the two first gears (510) are respectively positioned in the two fixed upright posts (1);
The first end part of each driven shaft (52) is provided with a second gear (520), the second ends of the two driven shafts (52) are respectively connected with the two movable stand columns (2), and the first gears (510) are in meshed connection with the second gears (520).
3. The lifting height limiting frame according to claim 2, wherein a fixing piece (11) is arranged on the inner side surface of the fixed upright post (1) near the bottom, and the second end of the driven shaft (52) penetrates through the fixing piece (11) and is connected with the movable upright post (2); external threads are arranged on the driven shaft (52) in the height direction, and the arrangement position of the external threads is the length between the second end of the driven shaft (52) and the fixing piece (11).
4. A lifting height limiting frame according to claim 3, wherein a connecting block (23) is arranged on the outer side surface of the movable upright post (2), a threaded through hole matched with a driven shaft (52) is axially formed in the connecting block (23), the second end of the driven shaft (52) is in threaded connection with the connecting block (23), and the connecting block (23) is arranged close to the bottom of the movable upright post (2).
5. A lifting height limiting frame according to claim 3, wherein the bottom of the movable upright post (2) is a connecting section (24), the connecting section (24) is of a solid structure, a threaded through hole is axially formed in the center of the connecting section (24), and the second end of the driven shaft (52) is in threaded connection with the connecting section (24).
6. The liftable height-limiting frame according to claim 2, characterized in that the driving shaft (51) between two of the fixed uprights (1) of each group is supported by one or more supporting seats (8), said supporting seats (8) being fixed on top of the foundation (7);
In each group of fixed upright posts (1), a first through hole is radially formed in the position, close to the bottom, of each fixed upright post (1), the first through hole is a circular through hole, the aperture of the first through hole is larger than the diameter of a first gear (510), the first end of a driving shaft (51) stretches into one fixed upright post (1), the second end stretches into the other fixed upright post (1), and the end part of the second end of the driving shaft (51) stretches out of the fixed upright post; the second end part of the driving shaft (51) is provided with a rotary table, and a handle is arranged on the rotary table.
7. The lifting height limiting frame according to claim 1, wherein a fixed seat (12) is integrally arranged at the bottom of the fixed upright post (1), and the fixed upright post (1) is arranged on the foundation (7) through the fixed seat (12); the foundation (7) is pre-buried with a pre-buried bolt (71), and the fixing seat (12) is fixed with the pre-buried bolt (71) on the foundation (7) through the bolt.
8. The lifting height limiting frame according to claim 1, wherein a plurality of connecting rods (21) are arranged in parallel between two movable upright posts (2) in the same group, and two ends of each connecting rod (21) are respectively connected with the movable upright posts (2) in a welding mode;
A strip-shaped gap (13) is formed in the height direction of the fixed upright post (1), the width of the strip-shaped gap (13) is not smaller than the outer diameter of the connecting rod (21), and the length of the strip-shaped gap (13) is not smaller than the height of the movable upright post (2);
The novel ladder is characterized in that a ladder stand (9) is arranged on the outer side face of the fixed upright (1), the ladder stand (9) is perpendicular to the fixed upright (1), the ladder stand (9) is connected with the fixed upright (1) in a welding mode, and the setting direction of the ladder stand (9) is parallel to the setting direction of the cross beam (3).
9. The lifting height limiting frame according to claim 1, wherein a plurality of connecting rods (31) are arranged in parallel between two beams (3) of each group, and the connecting rods (31) are mutually parallel; a reinforcing rod (32) is arranged between two adjacent connecting rods (31), and the reinforcing rods (32), the connecting rods (31) and the cross beam (3) are arranged in a triangular mode.
10. Lifting height-limiting frame according to any one of claims 1 to 9, characterized in that the cross beams (3) are of hollow structures, a reinforcing cross beam (10) is arranged between two opposite cross beams (3), a second through hole (22) is radially arranged at the position, close to the top, of the movable stand column (2), the diameter of the second through hole (22) is not smaller than that of the reinforcing cross beam (10), the cross beams (3) are connected at the position of the second through hole (22) at the top of the movable stand column (2), the reinforcing cross beam (10) simultaneously penetrates through two opposite cross beams (3), two opposite movable stand columns (2) are respectively extended from two ends of the reinforcing cross beam (10), and the part, extending out of the movable stand column (2), of the reinforcing cross beam (10) is fixed on the movable stand column (2) through a buckle matched with the outer diameter of the reinforcing cross beam (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322730077.1U CN220953091U (en) | 2023-10-11 | 2023-10-11 | Liftable formula limit for height frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322730077.1U CN220953091U (en) | 2023-10-11 | 2023-10-11 | Liftable formula limit for height frame |
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