阅读说明：本技术 一种物料变容贮存装置 (Material variable-volume storage device ) 是由 徐平源 于 2020-01-07 设计创作，主要内容包括：本发明公开了一种物料变容贮存装置,包括底座、伸缩筒机构和升降传动机构,伸缩筒机构包括固定底板、移动承重板、弹簧、固定底筒、内筒和外筒,所述升降传动机构包括主动齿轮、增速大齿轮、增速小齿轮、第一传动轴、第二传动轴、主卷筒、从动卷筒、传动杆、固定轴和钢丝绳,底座的顶端连接有所述固定底筒；固定底筒内部的下方设有固定底板,上方设有移动承重板,移动承重板底端设有若干承重柱,固定底板上设有与承重柱相对且数量相同的通孔；承重柱上外套有所述弹簧,且弹簧的两端分别顶住移动承重板的底端和固定底板的顶端；移动承重板相对于固定底筒能上下移动。本发明结构设计巧妙,使用方便,能实现贮存空间调节的物料变容贮存装置。(The invention discloses a material variable-capacity storage device which comprises a base, a telescopic cylinder mechanism and a lifting transmission mechanism, wherein the telescopic cylinder mechanism comprises a fixed bottom plate, a movable bearing plate, a spring, a fixed bottom cylinder, an inner cylinder and an outer cylinder; a fixed bottom plate is arranged below the inner part of the fixed bottom cylinder, a movable bearing plate is arranged above the fixed bottom cylinder, a plurality of bearing columns are arranged at the bottom end of the movable bearing plate, and through holes which are opposite to the bearing columns and have the same number are arranged on the fixed bottom plate; the bearing column is sleeved with the spring, and two ends of the spring respectively support against the bottom end of the movable bearing plate and the top end of the fixed bottom plate; the movable bearing plate can move up and down relative to the fixed bottom cylinder. The material variable-capacity storage device is ingenious in structural design and convenient to use, and can realize storage space adjustment.)

1. A material variable-capacity storage device is characterized by comprising a base, a telescopic cylinder mechanism and a lifting transmission mechanism, wherein the telescopic cylinder mechanism comprises a fixed bottom plate, a movable bearing plate, a spring, a fixed bottom cylinder, an inner cylinder and an outer cylinder; the fixed bottom plate is arranged below the inside of the fixed bottom cylinder, the movable bearing plate is arranged above the fixed bottom cylinder, a plurality of bearing columns are arranged at the bottom end of the movable bearing plate, and through holes which are opposite to the bearing columns and have the same number are formed in the fixed bottom plate; the spring is sleeved outside the bearing column, and two ends of the spring respectively support against the bottom end of the movable bearing plate and the top end of the fixed bottom plate; the movable bearing plate can move up and down relative to the fixed bottom cylinder;

the first transmission shaft and the second transmission shaft are rotatably arranged in a cavity at the bottom of the base, the driving gear and the speed-increasing large gear are arranged on the first transmission shaft, the speed-increasing small gear and the main winding drum are arranged on the second transmission shaft, and the speed-increasing large gear is meshed with the speed-increasing small gear; the bottom end of the movable bearing plate is connected with a rack, and the rack penetrates through the through hole in the fixed bottom plate and then is meshed with the driving gear;

the outer part above the fixed bottom cylinder is connected with one end of the outer cylinder, and the outer cylinders and the inner cylinders are sequentially sleeved in an alternating telescopic manner; the outer wall of the outer barrel is connected with a transmission rod, the driven drum is rotatably mounted on the base, the lower part of the uppermost transmission rod of the telescopic barrel mechanism is rotatably connected with the driven drum, the upper part of the uppermost transmission rod of the telescopic barrel mechanism is fixedly connected with a fixed shaft, and the upper parts and the lower parts of the transmission rods on the other outer barrels are rotatably connected with the driven drum; one end of the steel wire rope is wound on the main winding drum, and the steel wire rope is sequentially wound on the driven winding drum of the base and the driven winding drums of the plurality of transmission rods, and then the other end of the steel wire rope is fixed on the uppermost fixed shaft of the telescopic drum mechanism.

2. The variable-capacity material storage device according to claim 1, further comprising a limiting mechanism, wherein the limiting mechanism comprises a mounting seat, a telescopic top head, a limiting winding drum, a ratchet wheel, a return spring, a return coil spring and a pull rope, the mounting seat is connected to the outer wall of the uppermost outer cylinder of the telescopic cylinder mechanism, the telescopic top head is movably mounted on the mounting seat, the moving direction of the telescopic top head is perpendicular to the telescopic direction of the telescopic cylinder mechanism, and the head of the telescopic top head penetrates through the mounting seat and extends into the outer cylinder; a rod part of the telescopic ejector head is sleeved with a return spring, a ratchet wheel and a limiting winding drum, the ratchet wheel is positioned between the spring and the limiting winding drum, and two ends of the spring respectively prop against the end surface of the ratchet wheel and the inner wall surface of the mounting seat;

the ratchet wheel is fixedly connected with the rod part of the telescopic ejector head, a limiting coil spring is arranged between the limiting winding drum and the rod part of the telescopic ejector head, one end of the pull rope is wound on the limiting winding drum, and the other end of the pull rope is connected with the top end of the base; the ratchet wheel is characterized in that a plurality of first limiting bulges are uniformly distributed on the other end face of the ratchet wheel along the circumference, a plurality of second limiting bulges are uniformly distributed on the end face of the limiting winding drum along the circumference, the positions of the first limiting bulges and the positions of the second limiting bulges are staggered and clamped, and the limiting winding drum rotates in a single direction relative to the ratchet wheel.

3. A positive-displacement material storage device as claimed in claim 2, wherein the first retention projection has opposing sides respectively in a ramped and a planar configuration, the second retention projection has opposing sides respectively in a ramped and a planar configuration, the first retention projection has an opposing ramped surface opposite the ramped surface of the second retention projection, and the first retention projection has a planar surface opposite the planar surface of the second retention projection.

4. The material positive displacement storage device of claim 1, wherein the fixed bottom cylinder is provided with an outwardly extending outer rib on the upper outer portion, the outer cylinder is provided with an inwardly extending inner rib on the upper and lower inner portions, the inner cylinder is provided with an outwardly extending outer rib on the upper and lower outer portions, the fixed bottom cylinder outer rib is connected with the outer cylinder inner rib, and the plurality of outer cylinders and the inner cylinders are sleeved together by the inner rib on the outer cylinder and the outer rib on the inner cylinder.

5. A variable-volume material storage device as claimed in claim 1, wherein the first and second shafts are rotatably mounted at opposite ends thereof in the cavity at the bottom of the base by means of mounting brackets.

6. The variable-capacity material storage device according to claim 1, wherein a window is formed in the top end of the base, a support is connected to the outside of the window, a driven drum on the base is rotatably mounted on the support, and the steel wire rope is wound on the driven drum after passing through the window.

7. The variable-volume material storage device according to claim 1, wherein the number of the lifting transmission mechanisms is two, and the lifting transmission mechanisms are symmetrically arranged at two sides of the telescopic cylinder mechanism.

8. The variable-capacity material storage device according to claim 2, wherein the number of the limiting mechanisms is two, and the limiting mechanisms are symmetrically arranged at two sides of the telescopic cylinder mechanism.

9. A variable volume storage device as claimed in claim 1, wherein the drive rod is connected to the outer wall of the outer drum by a fixed rod.

Technical Field

The invention relates to the technical field of storage equipment, in particular to a material variable-capacity storage device.

Background

The existing equipment for storing materials is generally in a fixed structure, such as the existing equipment for storing pasture or feed, only can store fixed materials, and when the stored materials are more than the accommodating space of the storage equipment, the storage of redundant materials can be realized only by increasing the number of the storage equipment, however, the increase of the storage equipment causes large occupied space, and simultaneously increases the investment cost of the storage equipment, and is not economical and practical especially for large-scale storage equipment.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the material variable-capacity storage device which is ingenious in structural design, convenient to use and capable of realizing storage space adjustment. In order to achieve the purpose, the invention provides a material variable-capacity storage device which comprises a base, a telescopic cylinder mechanism and a lifting transmission mechanism, wherein the telescopic cylinder mechanism comprises a fixed bottom plate, a movable bearing plate, a spring, a fixed bottom cylinder, an inner cylinder and an outer cylinder; the fixed bottom plate is arranged below the inside of the fixed bottom cylinder, the movable bearing plate is arranged above the fixed bottom cylinder, a plurality of bearing columns are arranged at the bottom end of the movable bearing plate, and through holes which are opposite to the bearing columns and have the same number are formed in the fixed bottom plate; the spring is sleeved outside the bearing column, and two ends of the spring respectively support against the bottom end of the movable bearing plate and the top end of the fixed bottom plate; the movable bearing plate can move up and down relative to the fixed bottom cylinder;

the first transmission shaft and the second transmission shaft are rotatably arranged in a cavity at the bottom of the base, the driving gear and the speed-increasing large gear are arranged on the first transmission shaft, the speed-increasing small gear and the main winding drum are arranged on the second transmission shaft, and the speed-increasing large gear is meshed with the speed-increasing small gear; the bottom end of the movable bearing plate is connected with a rack, and the rack penetrates through the through hole in the fixed bottom plate and then is meshed with the driving gear;

the outer part above the fixed bottom cylinder is connected with one end of the outer cylinder, and the outer cylinders and the inner cylinders are sequentially sleeved in an alternating telescopic manner; the outer wall of the outer barrel is connected with a transmission rod, the driven drum is rotatably mounted on the base, the lower part of the uppermost transmission rod of the telescopic barrel mechanism is rotatably connected with the driven drum, the upper part of the uppermost transmission rod of the telescopic barrel mechanism is fixedly connected with a fixed shaft, and the upper parts and the lower parts of the transmission rods on the other outer barrels are rotatably connected with the driven drum; one end of the steel wire rope is wound on the main winding drum, and the steel wire rope is sequentially wound on the driven winding drum of the base and the driven winding drums of the plurality of transmission rods, and then the other end of the steel wire rope is fixed on the uppermost fixed shaft of the telescopic drum mechanism.

The limiting mechanism comprises an installation seat, a telescopic top head, a limiting winding drum, a ratchet wheel, a reset spring, a reset coil spring and a pull rope, wherein the installation seat is connected to the outer wall of the uppermost outer cylinder of the telescopic cylinder mechanism; a rod part of the telescopic ejector head is sleeved with a return spring, a ratchet wheel and a limiting winding drum, the ratchet wheel is positioned between the spring and the limiting winding drum, and two ends of the spring respectively prop against the end surface of the ratchet wheel and the inner wall surface of the mounting seat;

the ratchet wheel is fixedly connected with the rod part of the telescopic ejector head, a limiting coil spring is arranged between the limiting winding drum and the rod part of the telescopic ejector head, one end of the pull rope is wound on the limiting winding drum, and the other end of the pull rope is connected with the top end of the base; the ratchet wheel is characterized in that a plurality of first limiting bulges are uniformly distributed on the other end face of the ratchet wheel along the circumference, a plurality of second limiting bulges are uniformly distributed on the end face of the limiting winding drum along the circumference, the positions of the first limiting bulges and the positions of the second limiting bulges are staggered and clamped, and the limiting winding drum rotates in a single direction relative to the ratchet wheel.

Furthermore, the two opposite side faces of the first limiting protrusion are respectively of an inclined plane structure and a plane structure, the two opposite side faces of the second limiting protrusion are respectively of an inclined plane structure and a plane structure, the inclined plane of the first limiting protrusion is opposite to the inclined plane of the second limiting protrusion, and the plane of the first limiting protrusion is opposite to the plane of the second limiting protrusion.

Further, the outside of fixed end section of thick bamboo top is equipped with outside flange that extends, the inside of urceolus top and below all is equipped with inside flange that extends, the outside of the top of inner tube and below all is equipped with outside flange that extends, the outside flange of fixed end section of thick bamboo with flange is connected in the urceolus, through interior flange on the urceolus and the outside flange on the inner tube, with the flexible spacing registrate of a plurality of urceolus and inner tube.

Furthermore, the two ends of the first transmission shaft and the second transmission shaft are rotatably installed in the cavity at the bottom of the base through the fixing seats.

Further, a window is arranged at the top end of the base, a support is connected outside the window, a driven winding drum on the base is rotatably installed on the support, and the steel wire rope penetrates through the window and then is wound on the driven winding drum.

Furthermore, the number of the lifting transmission mechanisms is two, and the lifting transmission mechanisms are symmetrically arranged on two sides of the telescopic cylinder mechanism.

Furthermore, the number of the limiting mechanisms is two, and the limiting mechanisms are symmetrically arranged on two sides of the telescopic cylinder mechanism.

Further, the transmission rod is connected to the outer wall of the outer barrel through a fixing rod.

The invention has the beneficial effects that: when materials are stored in the telescopic cylinder mechanism, the movable bearing plate is pushed to move towards the fixed bottom plate along with the increase of the weight of the materials, the spring is compressed, so that the rack moves downwards to drive the driving gear to rotate, the main winding drum is driven to rotate through the speed-increasing large gear and the speed-increasing small gear, the steel wire rope is wound on the main winding drum, and the inner cylinder and the outer cylinder which are mutually sleeved are pulled up under the transmission action of the steel wire rope and the driven winding drum to realize the extension of the telescopic cylinder mechanism, so that the storage space of the telescopic cylinder mechanism is increased, the storage amount of the materials is increased, other storage equipment is not required to be put into, the cost is saved, and the occupied area is reduced. The telescopic cylinder mechanism can be extended without an external power source, and is energy-saving and environment-friendly. The invention particularly solves the problem of storage of the existing pasture or feed, so as to improve the storage amount of the pasture or feed and reduce the input cost of equipment.

When the telescopic cylinder mechanism is in the minimum storage space, a plurality of outer cylinders are overlapped, the limiting mechanism is in a limiting state, and a first limiting bulge on the ratchet wheel is clamped with a second limiting bulge on the limiting winding drum; when materials are stored in the telescopic drum mechanism, the movable bearing plate moves downwards, the steel wire rope is pulled tightly through the rack, the driving gear, the speed-increasing large gear, the speed-increasing small gear and the main drum, at the moment, under the action of the limiting mechanism, the pull rope pulls the telescopic drum mechanism and cannot extend, when the materials in the telescopic drum mechanism are filled to drive the telescopic top head to retract into the mounting seat, the first limiting bulge on the ratchet wheel is separated from the second limiting bulge on the limiting drum, at the moment, the limiting drum is in a free state, the pull rope is loose, at the moment, the telescopic drum mechanism extends, and the use is flexible and convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a perspective view of the telescopic tube mechanism of the present invention in a fully contracted state.

Fig. 2 is a perspective view after rotating a certain angle.

Fig. 3 is a perspective view of the telescopic cylinder mechanism of the present invention in a fully extended state.

Fig. 4 is a half-sectional perspective view of fig. 3.

FIG. 5 is a perspective view of the assembly of the fixed base plate, the movable bearing plate, the spring, the lifting transmission mechanism, the fixed base and the rack of the present invention.

Fig. 6 is an enlarged view of a portion a in fig. 4.

Fig. 7 is a partial perspective view of the spacing mechanism of fig. 1.

The above reference numerals:

the device comprises a base 1, a telescopic cylinder mechanism 2, a lifting transmission mechanism 3, a limiting mechanism 4, a support 5, a fixed seat 6, a fixed bottom cylinder 20, an outer cylinder 21, an inner cylinder 22, a movable bearing plate 23, a bearing column 24, a spring 25, a fixed bottom plate 26, an outer flange 201, an inner flange 210, a main drum 30, a driven drum 31, a steel wire rope 32, a transmission rod 33, a fixed rod 34, a fixed shaft 35, a rack 36, a driving gear 37, a speed-increasing gear 38, a speed-increasing pinion 39, a second transmission shaft 301, a first transmission shaft 302, a mounting seat 40, a telescopic top 41, a limiting drum 42, a return coil spring 43, a ratchet 44, a return spring 45, a pull rope 46, a fixed head 47, a second limiting bulge 420 and a first limiting bulge 440.

Detailed Description

The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

It is to be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the generic and descriptive sense only and not for purposes of limitation, as the term is used in the generic and descriptive sense, and not for purposes of limitation, unless otherwise specified or implied, and the specific reference to a device or element is intended to be a reference to a particular element, structure, or component. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, 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.

As shown in fig. 1 to 7, the variable capacity material storage device provided in this embodiment includes a base 1, a telescopic drum mechanism 2 and a lifting transmission mechanism 3, where the telescopic drum mechanism 2 includes a fixed bottom plate 26, a movable bearing plate 23, a spring 25, a fixed bottom drum 20, an inner drum 22 and an outer drum 21, the lifting transmission mechanism 3 includes a driving gear 37, a speed-increasing large gear 38, a speed-increasing small gear 39, a first transmission shaft 302, a second transmission shaft 301, a main drum 30, a driven drum 31, a transmission rod 33, a fixed shaft 35 and a steel wire rope 32, and the top end of the base 1 is connected to the fixed bottom drum 20; the fixed bottom plate 26 is arranged below the inside of the fixed bottom cylinder 20, the movable bearing plate 23 is arranged above the fixed bottom cylinder, a plurality of bearing columns 24 are arranged at the bottom end of the movable bearing plate 23, and through holes which are opposite to the bearing columns 24 and have the same number are formed in the fixed bottom plate 26; the bearing column 24 is sleeved with the spring 25, and two ends of the spring 25 respectively support against the bottom end of the movable bearing plate 23 and the top end of the fixed bottom plate 26; the movable bearing plate 23 is movable up and down with respect to the fixed base cylinder 20.

The first transmission shaft 302 and the second transmission shaft 301 are rotatably installed in a cavity at the bottom of the base 1, the driving gear 37 and the speed-increasing large gear 38 are both installed on the first transmission shaft 302, the speed-increasing small gear 39 and the main winding drum 30 are both installed on the second transmission shaft 301, and the speed-increasing large gear 38 is meshed with the speed-increasing small gear 39; the bottom end of the movable bearing plate 23 is connected with a rack 36, and the rack 36 passes through the through hole on the fixed bottom plate 26 and then is meshed with the driving gear 37.

The outer part above the fixed bottom barrel 20 is connected with one end of the outer barrel 21, and the outer barrel 21 and the inner barrel 22 are sequentially sleeved in an alternating telescopic manner; the outer wall of the outer cylinder 21 is connected with a transmission rod 33, the driven drum 31 is rotatably mounted on the base 1, the lower part of the uppermost transmission rod 33 of the telescopic cylinder mechanism 2 is rotatably connected with the driven drum 31, the upper part of the uppermost transmission rod 33 of the telescopic cylinder mechanism 2 is fixedly connected with a fixed shaft 35, and the upper parts and the lower parts of the transmission rods 33 on the other outer cylinders 21 are rotatably connected with the driven drums 31; one end of the steel wire rope 32 is wound on the main winding drum 30, and the steel wire rope 32 is sequentially wound on the driven winding drum 31 of the base 1 and the driven winding drums 31 of the plurality of transmission rods 33, and the other end of the steel wire rope is fixed on the uppermost fixed shaft 35 of the telescopic drum mechanism 2.

In the present embodiment, the number of the outer cylinders 21 is three, and the number of the inner cylinders 22 is two, wherein the number of the outer cylinders 21 and the number of the inner cylinders 22 are determined according to actual requirements.

The working principle of the embodiment is as follows: when storing materials in the telescopic cylinder mechanism 2, along with the increase of the weight of the materials, the movable bearing plate 23 is pushed to move towards the fixed bottom plate 26, the spring 25 is compressed, so that the rack 36 moves downwards to drive the driving gear 37 to rotate, the main winding drum 30 is driven to rotate through the speed-increasing large gear 38 and the speed-increasing small gear 39, the steel wire rope 32 is wound on the main winding drum 30, the inner cylinder 22 and the outer cylinder 21 which are mutually sleeved are pulled up under the transmission action of the steel wire rope 30 and the driven winding drum 31, the extension of the telescopic cylinder mechanism 2 is realized, the storage space of the telescopic cylinder mechanism 2 is increased, the storage amount of the materials is increased, other storage equipment is not required to be put into, the cost is saved, and the. The extension of the telescopic cylinder mechanism 2 can be realized without an external power source, and the energy-saving and environment-friendly effects are achieved. The embodiment particularly solves the problem of storage of the existing pasture or feed, so as to improve the storage amount of the pasture or feed and reduce the input cost of equipment.

When the materials in the telescopic cylinder mechanism 2 are taken out, the movable bearing plate 23 moves upwards and resets under the action of the spring 25, the rack 36 moves upwards to drive the driving gear 37 to rotate, the main drum 30 is driven to rotate after passing through the speed-increasing large gear 38 and the speed-increasing small gear 39, the main drum 30 discharges the steel wire rope 32, the inner drum 22 and the outer drum 21 which are mutually sleeved are contracted under the self weight of the telescopic cylinder mechanism 2 and the transmission action of the steel wire rope 32 and the driven drum 31, so that the outer drums 21 are overlapped, the inner drum 22 is contained in the outer drum 21, and the telescopic cylinder mechanism 2 is in the minimum storage space state at the moment.

Further preferably, the material variable-capacity storage device further includes a limiting mechanism 4, the limiting mechanism 4 includes an installation seat 40, a telescopic top 41, a limiting winding drum 42, a ratchet 44, a return spring 45, a return coil spring 43 and a pull rope 46, the installation seat 40 is connected to the outer wall of the uppermost outer cylinder 21 of the telescopic cylinder mechanism 2, the telescopic top 41 is movably installed on the installation seat 40, the moving direction of the telescopic top 41 is perpendicular to the telescopic direction of the telescopic cylinder mechanism 2, and the head of the telescopic top 41 penetrates through the installation seat 40 and extends into the outer cylinder 21; a return spring 45, a ratchet 44 and a limiting winding drum 42 are sleeved outside the rod part of the telescopic ejector 41, the ratchet 44 is positioned between the spring 45 and the limiting winding drum 42, and two ends of the spring 45 respectively prop against the end surface of the ratchet 44 and the inner wall surface of the mounting seat 40.

The ratchet 44 is fixedly connected with the rod part of the telescopic top head 41, a limiting coil spring 43 is arranged between the limiting winding drum 42 and the rod part of the telescopic top head 41, one end of the pull rope 46 is wound on the limiting winding drum 42, the other end of the pull rope 46 is connected with the top end of the base 1, and specifically, the other end of the pull rope 46 is fixedly connected with the top end of the base 1 through a fixing head 47; a plurality of first limiting bulges 440 are uniformly distributed on the other end surface of the ratchet wheel 44 along the circumference, a plurality of second limiting bulges 420 are uniformly distributed on the end surface of the limiting winding drum 42 along the circumference, the positions of the first limiting bulges 440 and the second limiting bulges 420 are staggered and clamped, and the limiting winding drum 42 rotates in one direction relative to the ratchet wheel 44.

In this embodiment, the two opposite side surfaces of the first limiting protrusion 440 are respectively in an inclined plane structure and a planar structure, the two opposite side surfaces of the second limiting protrusion 420 are respectively in an inclined plane structure and a planar structure, the inclined plane of the first limiting protrusion 440 is opposite to the inclined plane of the second limiting protrusion 420, and the plane of the first limiting protrusion 440 is opposite to the plane of the second limiting protrusion 420. When the limiting winding drum 42 rotates relative to the ratchet wheel 44, the rotation of the first limiting protrusion 440 and the second limiting protrusion 420 in the opposite direction to the inclined plane is not limited, and the rotation of the first limiting protrusion 440 and the second limiting protrusion 420 in the opposite direction to the plane is limited, so that the unidirectional rotation of the limiting winding drum 42 relative to the ratchet wheel 44 is realized.

As shown in fig. 1 and 2, at this time, the telescopic cylinder mechanism 2 is in the minimum storage space state, the plurality of outer cylinders 21 are stacked, the limiting mechanism 4 is in the limiting state, the limiting coil spring 43 cannot rotate under the action of the first limiting protrusion 440 and the second limiting protrusion 420, and the limiting drum 42 is in the locking state, so as to ensure that the plurality of outer cylinders 21 are stacked effectively and stably.

When materials are stored in the telescopic cylinder mechanism 2, the movable bearing plate 23 moves downwards, the steel wire rope 32 is pulled tightly through the rack 36, the driving gear 37, the speed-increasing large gear 38, the speed-increasing small gear 39 and the main winding drum 30, and at the moment, under the limiting action of the limiting mechanism 4, the pull rope 46 pulls the telescopic cylinder mechanism 2, so that the telescopic cylinder mechanism 2 cannot extend; when the material in the telescopic cylinder mechanism 2 is full of material and the telescopic top 41 is driven to retract into the mounting seat 40, namely the telescopic top 41 moves towards the outside of the outer cylinder 21, so as to drive the ratchet 44 to move away from the outer cylinder 21, so that the first limiting protrusion 440 on the ratchet 44 is separated from the second limiting protrusion 420 on the limiting winding drum 42, the reset spring 45 is pressed, the limiting winding drum 42 is in a free state at the moment, the limiting winding drum 42 rotates forwards and unreels relative to the rod part of the telescopic top 41, the pull rope 46 is loosened, the telescopic cylinder mechanism 2 extends, and meanwhile, the reset winding drum 42 rotates to drive the reset coil spring 43 to twist. As shown in fig. 3 and 4, the telescopic tube mechanism 2 is in a fully extended state, in which the storage space is maximized.

When the material in the telescopic cylinder mechanism 2 is taken out, so that the material does not press the telescopic top 41, under the torsion action of the return coil spring 43, the limiting drum 42 is driven to rotate reversely relative to the rod part of the telescopic top 41, so that the limiting drum 42 takes up the pull rope 46, meanwhile, the return spring 45 extends, so that the telescopic top 41 moves towards the inner part of the outer cylinder 21, and the ratchet 44 moves towards the limiting drum 42, and the first limiting protrusion 440 and the second limiting protrusion 420 do not limit the reverse rotation of the limiting drum 42 relative to the ratchet 44, but only limit the forward rotation of the limiting drum 42 relative to the ratchet 44, so that the ratchet 44 moves towards the limiting drum 42, and the reverse rotation of the limiting drum 42 relative to the ratchet 44 and the rod part of the telescopic top 41 is not influenced. With the material in the telescopic cylinder mechanism 2 taken out, the movable bearing plate 23 moves upwards, the telescopic cylinder mechanism 2 contracts to the minimum storage space state under the self weight of the telescopic cylinder mechanism 2 and the transmission action of the steel wire rope 32 and the driven drum 31, the limiting drum 42 rotates forwards relative to the ratchet wheel 44 under the action of the first limiting bulge 440 and the second limiting bulge 420, the limiting mechanism 4 is in the limiting state at this time, and the pull rope is in the tensioning state.

Further preferably, in this embodiment, an outer flange 201 extending outward is disposed on the outer portion above the fixed bottom cylinder 20, inner flanges 210 extending inward are disposed on the inner portions above and below the outer cylinder 21, outer flanges 201 extending outward are disposed on the outer portions above and below the inner cylinder 22, the outer flange 201 of the fixed bottom cylinder 20 is connected to the inner flange 210 of the outer cylinder 21, and the plurality of outer cylinders 21 and the inner cylinders 22 are telescopically engaged in a limiting manner through the inner flange 210 of the outer cylinder 21 and the outer flange 201 of the inner cylinder 22. In the present embodiment, the function of limiting the extension and retraction of the outer cylinder 21 and the inner cylinder 22 is realized by the inner rib 210 of the outer cylinder 21 and the outer rib 201 of the inner cylinder 22, and the structure of limiting the extension and retraction is simple.

In this embodiment, both ends of the first transmission shaft 302 and the second transmission shaft 301 are rotatably installed in the cavity at the bottom of the base 1 through the fixing seat 6. Wherein fixing base 6 and base 1 formula structure as an organic whole, perhaps adopt the fastener to link into an integrated entity, and first transmission shaft 302 and second transmission shaft 301 all rotate through the bearing and install on fixing base 6.

In this embodiment, the top of base 1 is equipped with the window, the window is connected with support 5 outward, driven reel 31 on the base 1 rotate install in on support 5, wire rope 32 twines on driven reel 31 after passing the window. Wherein, the support 5 and the base 1 are integrated into a whole structure or are connected into a whole by a fastener. The driven drum 31 is rotatably mounted on the support 5 through a rotating shaft and a bearing. The driven drum 31 is rotatably mounted on the driving rod 33 by a rotating shaft and a bearing.

In this embodiment, the number of the lifting transmission mechanisms 3 is two, and the two lifting transmission mechanisms are symmetrically arranged on two sides of the telescopic cylinder mechanism 2. Under the action of the two lifting transmission mechanisms 3, the power for driving the telescopic cylinder mechanism 2 to extend is ensured.

In this embodiment, the number of the limiting mechanisms 4 is two, and the limiting mechanisms are symmetrically arranged on two sides of the telescopic cylinder mechanism 2.

In this embodiment, the transmission rod 33 is connected to the outer wall of the outer cylinder 21 by a fixing rod 34.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.