CN115723476A - Caster with automatic height adjusting function and using method thereof - Google Patents

Abstract

The invention belongs to the technical field of trundles and discloses a trundle with an automatic height adjusting function and a use method thereof. According to the invention, the supporting frame and the moving wheel can be lifted up when the supporting frame and the supporting rod meet a step through the arranged extrusion wheel and the supporting rod, so that the moving wheel can move to the upper side of the step, one side of the scaffold close to the step moves to the upper side of the step, the condition that a worker lifts up one side of the scaffold close to the step and then places the scaffold on the step is avoided, the workload of the worker is reduced, and the working efficiency of the worker is improved.

Description

Caster with automatic height adjusting function and using method thereof

Technical Field

The invention relates to the technical field of casters, in particular to a caster with an automatic height adjusting function and a using method thereof.

Background

The caster is a general name, and comprises a movable caster, a fixed caster and a movable caster with a brake. The movable caster wheel is also called a universal wheel, and the structure of the movable caster wheel allows 360-degree rotation; the fixed caster is also called a directional caster, and has no rotating structure and can not rotate. Generally, two types of casters are used in combination, such as a cart having two directional wheels at the front and two universal wheels at the rear adjacent the push arm. And the truckle has the truckle of multiple material, like pp truckle, PVC truckle, PU truckle, cast iron truckle, nylon truckle, TPR truckle, iron core nylon truckle, iron core PU truckle etc..

The trundles are widely applied to trolleys, mobile scaffolds, workshop trucks and the like, the working places of the mobile scaffolds are special, the positions of the scaffolds are required to be continuously adjusted according to the changes of working positions, the positions of the mobile scaffolds are frequently met when the positions of the mobile scaffolds are adjusted, workers need to lift one side of the mobile scaffolds and then place the lifted sides on steps at the moment, the mobile scaffolds are difficult to lift due to the fact that the mobile scaffolds are heavy, and after the objects are placed on the scaffolds, the scaffolds are lifted and inclined, so that objects on the scaffolds fall off.

Disclosure of Invention

The invention aims to provide a caster with an automatic height adjusting function and a using method thereof, which can help workers to enable a scaffold to automatically cross steps and avoid the need of the workers to lift the scaffold.

The second purpose of the invention is to keep the upper end of the scaffold horizontal when crossing steps, so as to keep the articles on the surface of the scaffold stable and avoid the articles on the surface of the scaffold from falling off due to the inclination of the scaffold.

In order to solve the problems, the invention adopts the following technical scheme:

the utility model provides a truckle that possesses automatic altitude mixture control function, includes the support frame and installs the removal wheel on the support frame, its characterized in that: the supporting frame is provided with a driving rod in a penetrating manner, two ends of the driving rod are located on the outer side of the supporting frame, a driving mechanism is arranged at the position, opposite to the driving rod, of the supporting frame, a fixing frame is slidably mounted on the supporting frame, a cavity is formed in the position, opposite to the driving rod, of the inside of the supporting frame, a driving mechanism is mounted on the driving rod, an adjusting mechanism is mounted in the cavity, and the adjusting mechanism can drive the fixing frame and the supporting frame to move relatively; the upper end of the fixed frame is provided with a mounting frame;

the driving mechanism comprises two support rods, the two support rods are respectively and fixedly connected with two ends of the driving rod, and the driving mechanism drives the driving rod to rotate after being extruded by the step;

the driving rod drives the driving mechanism to rotate when rotating, the driving mechanism comprises two driving wheels, and the two driving wheels drive the adjusting mechanism when rotating;

adjustment mechanism includes the dwang, threaded groove has been seted up on the dwang, the support frame lower extreme is run through to the dwang upper end, the bellying and the threaded groove inner wall sliding contact of the relative position of threaded groove on the support frame, dwang lower extreme fixed mounting has from the driving wheel, action wheel and from the driving wheel meshing transmission.

As a preferable scheme of the invention, one side of each of the two support rods, which is far away from the moving wheel, is rotatably connected with an extrusion wheel, and the outer wall of the extrusion wheel is in extrusion contact with the side wall of the step.

Preferably, two the action wheel sets up respectively in the both sides from the driving wheel, the action wheel includes the disc, be annular equidistant a plurality of elasticity pawls of installing on the disc, and two elasticity pawls on the disc are opposite, the disc passes through elasticity pawl and follows the driving wheel meshing transmission, one of them the disc and drive lever sliding connection, the relative slidable one end screw thread of drive lever disc installs first threaded rod, the one end that first threaded rod is close to the disc is connected with mobilizable disc rotation.

Preferably, the dwang rotates with the support frame to be connected, support frame upper end fixed mounting has first spring, the one end and the inside fixed connection of mount that the support frame was kept away from to first spring.

Preferably, the mounting bracket includes the rotor plate, the rotor plate rotates with the mount to be connected, the rotor plate upper end is rotated and is connected with the second threaded rod, the rotor plate upside is equipped with the mounting panel, the position of the relative second threaded rod of mounting panel lower extreme is equipped with the thread bush, second threaded rod and thread bush threaded connection, just be equipped with a plurality of telescopic links between mounting panel and the rotor plate, the telescopic link is close to the one end and the mounting panel fixed connection of mounting panel, the telescopic link is close to the one end and the rotor plate fixed connection of rotor plate.

Preferably, the fixing frame is provided with a limiting rod in a sliding manner, the lower end of the rotating frame is provided with two limiting holes, and the limiting rod is in plug-in fit with the limiting holes.

Preferably, the gag lever post lower extreme runs through the mount and extends to its downside, the gag lever post is elasticity extending structure, vaulting pole outer wall and gag lever post downside extrusion contact.

Preferably, the breach has been seted up to the vaulting pole lower extreme, the inside rotation in breach is connected with the stabilizer bar, stabilizer bar outer wall fixedly connected with second spring, the second spring is kept away from the removal end and the breach inner wall fixed connection of stabilizer bar.

Preferably, the bayonet socket has been seted up on the stabilizer bar, vaulting pole outer wall slidable mounting has the fixture block, the fixture block is close to the one end fixedly connected with third spring of extrusion wheel, the terminal and the vaulting pole fixed connection of third spring, fixture block and bayonet socket joint cooperation, the one end that the fixture block is close to the support frame is in vaulting pole and gag lever post lower extreme extrusion contact time with gag lever post outer wall extrusion contact, the gag lever post downside is the slope column structure.

Preferably, the method comprises the following steps:

s1: mounting the apparatus on a scaffold by means of a mounting plate;

s2: when the scaffold meets a road section with steps after being pushed, the scaffold is pushed to enable the extrusion wheel to be in extrusion contact with the side face of the steps, so that the side face of the scaffold is lifted up by enabling the support rod to rotate, the movable wheel is enabled to ascend and move to the upper side of the steps, and the mounting frame is enabled to descend under the action of the driving mechanism and the adjusting mechanism during moving, so that the scaffold is prevented from inclining;

s3: when the scaffold needs to be positioned on a slope on one side and works on a horizontal plane on the other side, the extrusion wheels and the support rods are rotated under the extrusion of the slope, so that the fixed frame is contracted relative to the movable frame through the driving mechanism and the adjusting mechanism again, the scaffold is prevented from inclining, the support rods can extrude the limiting rods after rotating, the limiting rods are inserted into the inserting holes at the lower end of the rotating plate, the rotating plate is limited, the rotating plate is prevented from rotating relative to the mounting frame, the limiting rods can push the clamping blocks to be separated from the bayonet when the support rods rotate, and then the stabilizing rods are rotated under the action of the third springs and are tightly attached to the ground;

s4: when the scaffold is required to be completely located on the slope for working, the second threaded rod is rotated to be matched with the threaded cylinder, so that the mounting plate can move along the direction of the telescopic rod relative to the rotating plate, the distance between the mounting plate and the rotating plate is adjusted, and the upper end of the scaffold can be kept in a horizontal state.

Compared with the prior art, the invention has the advantages that:

(1) According to the invention, the supporting frame and the moving wheel can be lifted up when the extruding wheel and the supporting rod meet the step, so that the moving wheel can move to the upper side of the step, one side of the scaffold close to the step moves to the upper side of the step, the condition that a worker lifts one side of the scaffold close to the step and then puts the scaffold on the step is avoided, the workload of the worker is reduced, and the working efficiency of the worker is improved.

(2) The adjusting mechanism can be matched with the driving mechanism to automatically enable the fixing frame and the supporting frame to move relatively when the scaffold is adjusted in a crossing mode, so that one side, close to the step, of the scaffold is kept stable when the scaffold crosses the step, the phenomenon that articles on the scaffold fall off due to inclination is avoided, the stability of the scaffold is guaranteed, and the safety of the articles on the scaffold is also guaranteed.

(3) According to the scaffold, the two driving wheels can drive the driven wheel and the rotating rod to rotate through the support rod and the driving rod when one side of the scaffold is located on the slope, so that the side, close to the slope, of the scaffold is lowered, and the scaffold is prevented from inclining.

(4) The limiting rod can be inserted into the limiting hole when the device is positioned on the slope surface, so that the fixing frame and the rotating plate are kept fixed, the phenomenon that the fixing frame rotates relative to the rotating plate due to uneven stress on the upper end of the fixing frame when the scaffold works on the slope surface, and further the scaffold on the upper side is unstable is avoided, the scaffold works on the slope surface more stably, and the safety of the scaffold in the use process is improved.

(5) According to the scaffold, the stabilizing rod is tightly attached to the slope under the action of the second spring after the clamping block is separated from the bayonet, so that the friction force can be increased, the supporting rod and the supporting frame are kept stable when the scaffold is fixed, the phenomenon of landslide of the moving wheel is avoided, and the scaffold is safer when in use.

Drawings

FIG. 1 is a partial schematic structural view of the present invention.

Fig. 2 is a schematic view of the internal structure of the supporting frame and the fixing frame of the present invention.

Fig. 3 is a schematic view of the inner portion of the notch and the stabilizer bar of the present invention.

FIG. 4 is a schematic cross-sectional view of a portion of the driving mechanism and a side of the driving rod close to the movable driving wheel according to the present invention.

FIG. 5 is a schematic view of a movable driving wheel according to the present invention.

Fig. 6 is a schematic view of a second threaded shank portion of the present invention.

FIG. 7 is a schematic view of a portion of the spacing rod of the present invention.

The reference numbers in the figures illustrate:

1. a support frame; 2. a moving wheel; 3. driving the rod; 4. a drive mechanism; 5. a fixed mount; 6. a cavity; 7. a drive mechanism; 8. an adjustment mechanism; 9. a mounting frame; 10. a stay bar; 11. a driving wheel; 12. rotating the rod; 13. a thread groove; 14. a driven wheel; 15. an extrusion wheel; 16. a disc; 17. an elastic pawl; 18. a first threaded rod; 19. a first spring; 20. a rotating plate; 21. a second threaded rod; 22. mounting a plate; 23. a threaded sleeve; 24. a telescopic rod; 25. a limiting rod; 26. a limiting hole; 27. a notch; 28. a stabilizer bar; 29. a second spring; 30. a bayonet; 31. a clamping block; 32. and a third spring.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are merely exemplary embodiments, rather than exemplary embodiments, and that all other embodiments may be devised by those skilled in the art without departing from the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-7, a caster with an automatic height adjusting function and a using method thereof, includes a support frame 1 and a moving wheel 2 mounted on the support frame 1, wherein a driving rod 3 penetrates through the support frame 1, both ends of the driving rod 3 are located outside the support frame 1, a driving mechanism 4 is arranged on the support frame 1 at a position opposite to the driving rod 3, a fixed frame 5 is slidably mounted on the support frame 1, a cavity 6 is formed in the position opposite to the driving rod 3 inside the support frame 1, the driving rod 3 is provided with the driving mechanism 7, an adjusting mechanism 8 is mounted inside the cavity 6, and the adjusting mechanism 8 can drive the fixed frame 5 and the support frame 1 to move relatively; the upper end of the fixed frame 5 is provided with a mounting frame 9;

the driving mechanism 4 comprises two support rods 10, the two support rods 10 are respectively and fixedly connected with two ends of the driving rod 3, and the driving mechanism 4 drives the driving rod 3 to rotate after being extruded by the step;

the driving rod 3 drives the driving mechanism 7 to rotate when rotating, the driving mechanism 7 comprises two driving wheels 11, and the two driving wheels 11 drive the adjusting mechanism 8 when rotating;

adjustment mechanism 8 includes dwang 12, threaded groove 13 has been seted up on dwang 12, dwang 12 can drive mount 5 when rotating and remove, thereby make mount 5 can the motion of support frame 1 relatively, dwang 12 upper end runs through support frame 1 lower extreme, the bellying and the threaded groove 13 inner wall sliding contact of the position of threaded groove 13 on the support frame 1 relatively, dwang 12 lower extreme fixed mounting has from driving wheel 14, can drive dwang 12 when rotating from driving wheel 14 and rotate, action wheel 11 with from 14 meshing transmissions of driving wheel, action wheel 11 can drive when rotating from driving wheel 14 and rotate.

Specifically, one side of two vaulting poles 10 keeping away from to remove wheel 2 rotates and is connected with extrusion wheel 15, and extrusion wheel 15 outer wall and step lateral wall extrusion contact can drive vaulting pole 10 through extrusion wheel 15 that sets up after contacting with the step side and rotate to make and drive pole 3 and rotate.

Further, two driving wheels 11 are respectively arranged at two sides of a driven wheel 14, each driving wheel 11 comprises a disc 16, a plurality of elastic pawls 17 are annularly and equidistantly arranged on each disc 16, the elastic pawls 17 on the two discs 16 face opposite directions, each disc 16 is in meshed transmission with the driven wheel 14 through the corresponding elastic pawl 17, only one elastic pawl 17 on one disc 16 is meshed with the corresponding driven wheel 14 when the driving rod 3 rotates, therefore, the driven wheels 14 can rotate in the same direction when the driving rod 3 rotates in different directions, one disc 16 is in sliding connection with the driving rod 3, one end of the driving rod 3, which is opposite to the slidable disc 16, is in threaded connection with a first threaded rod 18, one end, which is close to the disc 16, of the first threaded rod 18 is in rotating connection with the movable disc 16, after the device is used, the position of the movable disc 16 can be adjusted through rotating the first threaded rod 18, so that the elastic pawls 17 on the constantly movable disc 16 are separated from the corresponding driven wheel 14, and then the driving rod 12 and the driven wheel 14 are rotated through threaded grooves 13 when the supporting frame 5 and the supporting frame 1 are relatively far away from each other, and the driven wheel 14 can be meshed with the elastic pawls 17, so that the driving rod 3 and the supporting frame 10 and the supporting frame 15 can be restored to the original supporting frame.

Furthermore, the rotating rod 12 is rotatably connected with the support frame 1, the rotating rod 12 can rotate inside the support frame 1, a first spring 19 is fixedly mounted at the upper end of the support frame 1, one end, away from the support frame 1, of the first spring 19 is fixedly connected with the inside of the fixing frame 5, and the support frame 1 and the fixing frame 5 can be extruded by the first spring 19.

It is worth to say that, the mounting bracket 9 includes a rotating plate 20, the rotating plate 20 is rotationally connected with the mounting bracket 5, the rotating plate 20 can rotate relative to the mounting bracket 5, the upper end of the rotating plate 20 is rotationally connected with a second threaded rod 21, the second threaded rod 21 can rotate relative to the rotating plate 20, a mounting plate 22 is arranged on the upper side of the rotating plate 20, a threaded sleeve 23 is arranged at the lower end of the mounting plate 22 relative to the second threaded rod 21, the mounting plate 22 can move relative to the rotating plate 20 after the second threaded rod 21 is rotated, so as to adjust the distance between the mounting plate 22 and the rotating plate 20, the second threaded rod 21 is in threaded connection with the threaded sleeve 23, a plurality of telescopic rods 24 are arranged between the mounting plate 22 and the rotating plate 20, the mounting plate 22 and the rotating plate 20 can be prevented from rotating relative to each other by the arranged telescopic rods 24 when the mounting plate 22 and the rotating plate 20 move relative to each other, so as to limit the moving direction of the mounting plate 22 and the rotating plate 20 when moving relative, one end of the telescopic rod 24 close to the mounting plate 22 is fixedly connected with the mounting plate 22, and one end of the rotating plate 24 close to the rotating plate 20 is fixedly connected with the rotating plate 20.

In addition, slidable mounting has gag lever post 25 on mount 5, and two spacing holes 26 have been seted up to the rotating turret lower extreme, and gag lever post 25 and spacing hole 26 are pegged graft and are cooperated, and inside spacing hole 26 can be injected into to the upper end of gag lever post 25 to can make mount 5 relative rotor plate 20 keep fixed, avoid when domatic the uneven power that acts on mount 5 upper end of mounting bracket 9 to lead to mount 5 relative rotor plate 20 to take place to rotate, and then lead to the scaffold frame of its upside unstable.

It should be noted that the lower end of the limiting rod 25 penetrates through the fixing frame 5 and extends to the lower side of the fixing frame, the limiting rod 25 is of an elastic telescopic structure, the outer wall of the supporting rod 10 can extrude the lower side of the limiting rod 25 when the supporting rod 10 rotates, so that the limiting rod 25 can ascend, the limiting rod 25 can ascend when the supporting rod 10 extrudes the lower end of the limiting rod 25, the limiting rod 25 can contract when the supporting rod 10 continuously ascends after the limiting rod 25 is inserted into the limiting hole 26, and the limiting rod 25 is of an elastic telescopic structure, so that the limiting rod 25 can extrude the fixture block 31 when the supporting rod 10 rotates, the fixture block 31 can move along the direction of the supporting rod 10, and the outer wall of the supporting rod 10 is in extrusion contact with the lower side of the limiting rod 25.

Besides, the lower end of the support rod 10 is provided with a notch 27, the notch 27 is internally and rotatably connected with a stabilizer bar 28, the stabilizer bar 28 can be retracted into the notch 27 when not needed to be used, the occupied area is reduced, the outer wall of the stabilizer bar 28 is fixedly connected with a second spring 29, and the second spring 29 is far away from the moving end of the stabilizer bar 28 and is fixedly connected with the inner wall of the notch 27.

Wherein, bayonet socket 30 has been seted up on stabilizer bar 28, vaulting pole 10 outer wall slidable mounting has fixture block 31, fixture block 31 can block into inside bayonet socket 30, thereby make stabilizer bar 28 can be fixed inside breach 27 when not using, fixture block 31 is close to the one end fixedly connected with third spring 32 of extrusion wheel 15, third spring 32 can make stabilizer bar 28 stretch out from breach 27 after fixture block 31 breaks away from with bayonet socket 30, and make stabilizer bar 28 end and domatic laminating, prevent the phenomenon of landslide, third spring 32 end and vaulting pole 10 fixed connection, fixture block 31 cooperates with bayonet socket 30 joint, fixture block 31 is close to the one end of support frame 1 and is in vaulting pole 10 and gag lever post 25 lower extreme extrusion contact time with gag lever post 25 outer wall extrusion contact, the gag lever post 25 downside is the slope column structure, the slope column structure of gag lever post 25 downside can be convenient for with the bellying block on domatic surface.

On the basis of the scheme, the method comprises the following steps:

s1: the apparatus is mounted on the scaffold by means of mounting plates 22;

s2: when the scaffold meets a stepped road section after being pushed, the scaffold is pushed to enable the extrusion wheel 15 to be in extrusion contact with the side surface of the step, so that the side surface of the scaffold is lifted by rotating the support rod 10, the moving wheel 2 is lifted and moved to the upper side of the step, and the mounting frame 9 is lowered under the action of the driving mechanism 7 and the adjusting mechanism 8 during moving, so that the scaffold is prevented from inclining;

s3: when the scaffold needs to be positioned on a slope on one side and works on a horizontal plane on the other side, the extrusion wheels 15 and the support rods 10 are rotated under the extrusion of the slope, so that the fixed frame 5 is contracted relative to the movable frame through the driving mechanism 7 and the adjusting mechanism 8 again, the scaffold is prevented from inclining, the support rods 10 can extrude the limiting rods 25 after being rotated, the limiting rods 25 are inserted into the insertion holes in the lower end of the rotating plate 20, the rotating plate 20 is limited, the rotating plate 20 is prevented from rotating relative to the mounting frame 9, the limiting rods 25 can push the clamping blocks 31 to be separated from the clamping holes 30 when the support rods 10 are rotated, and then the stabilizing rods 28 are rotated under the action of the third springs 32 and are tightly attached to the ground;

s4: when the scaffold is required to be completely positioned on a slope for work, the second threaded rod 21 is rotated to be matched with the threaded cylinder, so that the mounting plate 22 can move relative to the rotating plate 20 along the direction of the telescopic rod 24, the distance between the mounting plate 22 and the rotating plate 20 is adjusted, and the upper end of the scaffold can be kept in a horizontal state.

The working principle is as follows: when the device is required to work, the mounting plate 22 is mounted at the lower end of the scaffold by using bolts, then, when the scaffold is pushed to meet a stepped position in the moving process, the scaffold is pushed to move, so that the extrusion wheel 15 is in contact with the side surface of the step, the stay bar 10 can rotate under the action of pressure, the support frame 1 can be driven to ascend when the stay bar 10 rotates, the fixed frame 5 and the mounting frame 9 on the fixed frame 5 are driven to ascend under the action of the first spring 19, so that the scaffold is close to one side of the step, wherein, when the stay bar 10 rotates, the support frame 1 ascends to drive the movable wheel 2 to ascend, the movable wheel 2 can pass through between the two stay bars 10 when the stay bar 10 rotates, the movable wheel 2 is at the highest position when the extrusion wheel 15 is positioned under the movable wheel 2, and then the roller can move to the upper side of the step as the scaffold is continuously pushed, and the stay bar 10 can rotate to the other side of the moving wheel 2, wherein, the stay bar 10 can drive the driving bar 3 to rotate when rotating, the driving bar 3 can drive the disc 16 to rotate, the disc 16 can drive the driven wheel 14 to rotate through a plurality of elastic pawls 17 on the surface, the driven wheel 14 can drive the rotating bar 12 to rotate, the rotating bar 12 can drive the fixed frame 5 and the supporting frame 1 to be close to each other through the matching of the thread groove 13 on the surface and the convex part on the fixed frame 5, and further, the fixed frame 5 can be descended when the moving wheel 2 ascends, so that one side of the scaffold close to the step is descended through the mounting frame 9, thereby avoiding the scaffold from inclining, wherein, when the scaffold needs to work on one side on a slope and the other side on a horizontal plane, the lower end of the extrusion wheel 15 can be extruded by the slope, therefore, the stay bar 10 can be rotated in the moving process, the stay bar 10 at this time can drive the driving bar 3 to rotate, and the orientations of the two sets of elastic pawls 17 are opposite, so that the driving bar 3 can drive the driven wheel 14 to rotate in the same direction when rotating in different directions, so that the fixing frame 5 and the support frame 1 at this time can still approach each other, thereby lowering the side of the scaffold close to the slope, wherein the stay bar 10 at this time can also press the lower end of the limiting bar 25 when rotating, so that the limiting bar 25 ascends, and further the limiting bar 25 is inserted into the limiting hole 26, so that the rotating plate 20 can be fixed relative to the fixing frame 5, thereby preventing the fixing frame 5 from rotating relative to the rotating plate 20 due to uneven stress on the upper end of the fixing frame 5 when the scaffold works on the slope, and further preventing the stabilizer bar on the upper side of the scaffold from being unstable, wherein, when the stay bar 10 presses the lower end of the limiting bar 25, the end of the limiting bar 25 can press the clamping block 31 as the stay bar 10 rotates, so that the clamping block 31 can move on the support frame 10, the clamping block 31 can be separated from the bayonet 30 after moving, and the clamping block 29 can be moved from the inside, and the scaffold, so that the end of the support frame can be more firmly attached to the support frame 2, and the support frame can be more stably fixed, and the support frame can increase the friction force, thereby preventing the slope from the scaffold from the support frame 2.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to cover the technical scope of the present invention, the technical solutions and the modifications thereof according to the present invention within the technical scope of the present invention.

Claims (10)

1. The utility model provides a truckle that possesses automatic altitude mixture control function, includes support frame (1) and installs removal wheel (2) on support frame (1), its characterized in that: the supporting frame (1) is provided with a driving rod (3) in a penetrating mode, two ends of the driving rod (3) are located on the outer side of the supporting frame (1), a driving mechanism (4) is arranged at the position, relative to the driving rod (3), of the supporting frame (1), a fixing frame (5) is installed on the supporting frame (1) in a sliding mode, a cavity (6) is formed in the position, relative to the driving rod (3), of the inner portion of the supporting frame (1), a driving mechanism (7) is installed on the driving rod (3), an adjusting mechanism (8) is installed inside the cavity (6), and the adjusting mechanism (8) can drive the fixing frame (5) and the supporting frame (1) to move relatively; the upper end of the fixed frame (5) is provided with a mounting frame (9);

the driving mechanism (4) comprises two support rods (10), the two support rods (10) are respectively and fixedly connected with two ends of the driving rod (3), and the driving mechanism (4) drives the driving rod (3) to rotate after being extruded by the steps;

the driving rod (3) drives the driving mechanism (7) to rotate when rotating, the driving mechanism (7) comprises two driving wheels (11), and the two driving wheels (11) drive the adjusting mechanism (8) when rotating;

adjustment mechanism (8) are including dwang (12), thread groove (13) have been seted up on dwang (12), support frame (1) lower extreme is run through to dwang (12) upper end, the bellying and thread groove (13) inner wall sliding contact of the position of relative thread groove (13) on support frame (1), dwang (12) lower extreme fixed mounting has from driving wheel (14), action wheel (11) and from driving wheel (14) meshing transmission.

2. The caster with automatic height adjustment function according to claim 1, wherein: two one side that vaulting pole (10) kept away from removal wheel (2) is rotated and is connected with extrusion wheel (15), extrusion wheel (15) outer wall and step lateral wall extrusion contact.

3. The caster with automatic height adjustment function according to claim 1, wherein: two action wheel (11) set up respectively in the both sides from driving wheel (14), action wheel (11) include disc (16), be annular equidistant on disc (16) and install a plurality of elasticity pawls (17), and two elasticity pawls (17) on disc (16) are opposite towards, disc (16) pass through elasticity pawls (17) and follow driving wheel (14) meshing transmission, one of them disc (16) and driving rod (3) sliding connection, first threaded rod (18) are installed to the one end screw thread of driving rod (3) relative slidable disc (16), first threaded rod (18) are close to the one end of disc (16) and are connected with mobilizable disc (16) rotation.

4. The caster with automatic height adjustment function according to claim 1, wherein: dwang (12) are rotated with support frame (1) and are connected, support frame (1) upper end fixed mounting has first spring (19), the one end and the inside fixed connection of mount (5) that support frame (1) were kept away from in first spring (19).

5. The caster with automatic height adjustment function according to claim 1, wherein: mounting bracket (9) include rotor plate (20), rotor plate (20) are rotated with mount (5) and are connected, rotor plate (20) upper end is rotated and is connected with second threaded rod (21), rotor plate (20) upside is equipped with mounting panel (22), the position of the relative second threaded rod (21) of mounting panel (22) lower extreme is equipped with threaded sleeve (23), second threaded rod (21) and threaded sleeve (23) threaded connection, just be equipped with a plurality of telescopic links (24) between mounting panel (22) and rotor plate (20), telescopic link (24) are close to the one end and mounting panel (22) fixed connection of mounting panel (22), telescopic link (24) are close to the one end and rotor plate (20) fixed connection of rotor plate (20).

6. The caster with automatic height adjustment function according to claim 1, wherein: the fixing frame (5) is provided with a limiting rod (25) in a sliding mode, the lower end of the rotating frame is provided with two limiting holes (26), and the limiting rod (25) is in plug-in fit with the limiting holes (26).

7. The caster with automatic height adjustment function according to claim 6, wherein: the lower end of the limiting rod (25) penetrates through the fixing frame (5) and extends to the lower side of the fixing frame, the limiting rod (25) is of an elastic telescopic structure, and the outer wall of the support rod (10) is in extrusion contact with the lower side of the limiting rod (25).

8. The caster with automatic height adjustment function according to claim 7, wherein: breach (27) have been seted up to vaulting pole (10) lower extreme, breach (27) inside rotation is connected with stabilizer bar (28), stabilizer bar (28) outer wall fixedly connected with second spring (29), the removal end and breach (27) inner wall fixed connection that stabilizer bar (28) were kept away from in second spring (29).

9. The caster with automatic height adjustment function according to claim 8, wherein: bayonet socket (30) have been seted up on stabilizer bar (28), vaulting pole (10) outer wall slidable mounting has fixture block (31), fixture block (31) are close to one end fixedly connected with third spring (32) of extrusion wheel (15), third spring (32) end and vaulting pole (10) fixed connection, fixture block (31) and bayonet socket (30) joint cooperation, the one end that fixture block (31) are close to support frame (1) when vaulting pole (10) and gag lever post (25) lower extreme extrusion contact with gag lever post (25) outer wall extrusion contact, gag lever post (25) downside is the slope column structure.

10. The use method of a caster with an automatic height adjusting function according to any one of claims 1 to 9, wherein: the method comprises the following steps:

s1: mounting the apparatus on a scaffold by means of a mounting plate (22);

s2: when the scaffold meets a stepped road section after being pushed, the scaffold is pushed to enable the extrusion wheel (15) to be in extrusion contact with the side face of the step, so that the side face of the scaffold is lifted by rotating the support rod (10), the moving wheel (2) is lifted and moved to the upper side of the step, and the mounting frame (9) is lowered under the action of the driving mechanism (7) and the adjusting mechanism (8) during moving, so that the scaffold is prevented from inclining;

s3: when the scaffold needs to be positioned on a slope on one side and works on a horizontal plane on the other side, the extrusion wheels (15) and the support rods (10) are rotated under the extrusion of the slope, so that the fixed frame (5) is contracted relative to the movable frame through the driving mechanism (7) and the adjusting mechanism (8) again, the scaffold is prevented from inclining, the support rods (10) can extrude the limiting rods (25) after being rotated, the limiting rods (25) are inserted into the inserting holes in the lower end of the rotating plate (20) to limit the rotating plate (20), the rotating plate (20) is prevented from rotating relative to the mounting frame (9), the limiting rods (25) can push the clamping blocks (31) to be separated from the bayonets (30) when the support rods (10) rotate, and then the stabilizing rods (28) rotate under the action of a third spring (32) and are tightly attached to the ground;

s4: when the scaffold is required to be completely positioned on a slope to work, the second threaded rod (21) is rotated to be matched with the threaded cylinder, so that the mounting plate (22) can move along the direction of the telescopic rod (24) relative to the rotating plate (20), the distance between the mounting plate (22) and the rotating plate (20) is adjusted, and the upper end of the scaffold can be kept in a horizontal state.

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