TW201024198A - Expansion axle - Google Patents

Abstract

This invention discloses an expansion axle for supporting and fixing paper core reel, comprising: an outer bushing, a plurality of cover boards and a retraction mechanism. The outer bushing has a bushing surface and an inner axial hole, and a first radial slot set and a second radial slot set are respectively disposed on the bushing surface axially. The first and second radial slot sets are both equipped with a plurality of slot holes. The cover boards are disposed at the radial slot holes. The retraction mechanism is floatingly disposed in the inner axial hole between the first and second radial slot sets and can allow fixedly installing each cover board. When the retraction mechanism is stretched, the cover boards are outwardly and radially pushed from the axle, making the cover boards protrude from the bushing surface. When the retraction mechanism is retracted, the cover boards are retracted into the slot holes of the first and second radial slot sets.

Description

201024198, VI. Description of the invention: 'Technical field to which the invention pertains>> The present invention relates to an expansion shaft', particularly to an expansion vehicle having a high load and self-adjusting the amount of expansion of the cover plates on both sides. [Prior Art] Conventional expansion shafts are mainly used for fixing various paper core reels so that steel strips, aluminum strips, stainless steel strips or other materials having a higher specific gravity can be directly taken up by the paper core reel. At present, the common expansion shaft is mainly pneumatic, such as Taiwan Specialized 290521 and US Pat. No. 6,196,494, B1. It is mainly composed of an outer sleeve, a telescopic block and a telescopic mechanism. The telescopic block is inserted into the mounting slot of the outer sleeve and Extending outward or inward along the mounting slot, the telescopic mechanism portion mainly utilizes the expansion of the airbag, and the telescopic block protrudes to fix the reel. The expansion shaft driven power of this kind is pneumatic, and is usually used in a relatively light load. The weight of the raw material that can be taken up is limited, and it is suitable for winding light-weight raw materials such as plastic or paper, and the driving power. The pneumatic cylinder is a single-sided fixed force that provides a fixed expansion thrust. In addition, Chinese patent CN 290521 also discloses a mechanical expansion shaft mechanism which relies on the relative movement of the roller and the conical surface to produce an expansion of the outer diameter 'but the contact area between the roller and the conical surface is not large'. Withstands a large weight load', so the expansion shaft can only be used in lower load applications. SUMMARY OF THE INVENTION The problem to be solved by the present invention is to provide a high load, floating hydraulic cylinder type expansion shaft structure. 201024198

The expansion shaft provided by the technical means for solving the above problems includes an outer sleeve, a plurality of cover plates and a telescopic mechanism. The outer sleeve has a two-sleeve surface and an inner shaft hole, and the first-radial groove group and the second radial groove group are respectively disposed on the surface of the sleeve at both axial ends. The group and the second radial groove group respectively have a plurality of slots communicating with the inner shaft hole. A plurality of cover plates are respectively disposed in the radial slots. a telescopic mechanism is movably disposed in the inner shaft hole between the first radial groove group and the second radial groove group. The telescopic mechanism is fixed for each cover plate, and the cover plates are fixed by the shaft The core is pushed radially outwardly so that the cover plates protrude from the sleeve surface of the outer sleeve or the cover plates are retracted into the slots. The invention is characterized in that the push applied in the telescopic mechanism of the invention can provide different expansion amounts of the cover plates on both sides of the expansion shaft, and the expansion amount can be self-regulated according to the difference between the material and the inner diameter of the paper tube, and the expansion force arrangement on both sides can be It tends to average and produces a relatively better support effect on the paper tube. Further, the load to which the expansion shaft of the present invention is subjected can be equally distributed by the mechanism, and the telescopic mechanism is not easily deformed to have rigidity, and the paper tube is not easily loosened and slipped when the expansion shaft is rotated at a high load and at a high speed. [Embodiment] The preferred embodiment of the present invention will be described in detail below with reference to the drawings. The invention is used for fixing in a paper tube or other low-cost pipe material, and the utility model can generate enough capacity to take up the plate-shaped raw material. First, please refer to the invention shown in FIG. 3D exploded view of the embodiment, FIG. 2 is a perspective assembled view of the inner component of the outer bushing of the present invention, FIG. 3 is a top view of the combination of the embodiment of the present invention, and FIG. 4 is continued. 3, before the 4-4 shifting cross-sectional view 'and the side view 5-5 shifting cross-sectional view of FIG. In this embodiment, the expansion shaft system includes an outer sleeve, a cover plate 20, and a telescopic mechanism 30. The outer sleeve 1 has a sleeve surface 11 and an inner shaft hole 12, and a first radial groove group 111 and a second radial groove group 112 are respectively disposed on the sleeve surface of the axial ends. The first radial groove group 111 and the second radial groove group 112 respectively have a plurality of slots 1121 communicating with the inner shaft hole 12. The slots (1111, 1121) of the first radial slot set 111 and the second radial slot set 112 are radially equiangularly distributed on the sleeve surface of the outer sleeve. A plurality of cover plates 20 are respectively disposed in the slot 1111 of the first radial slot group ill and the slot 1121 of the second radial slot group 112. Each cover surface is a curved surface having the same curvature as the outer sleeve surface of the outer sleeve, and each cover surface has a non-slip structure, which can directly open a plurality of grooves on the surface, or apply surface treatment The technology directly forms a high coefficient of friction layer, or the spring is to apply a high coefficient of friction layer to increase the friction with the inner wall of the paper tube or other tube. a telescopic mechanism 30 is disposed in the inner shaft hole 12 between the first radial groove group 111 and the second radial groove group 112, and the telescopic mechanism 30 is fixed for each cover plate 20, and When the telescopic mechanism 30 is stretched, the cover plates 20 are radially outwardly pushed out from the axial center, so that the cover plates 2 protrude from the sleeve surface 11 of the outer sleeve 10 at the telescopic mechanism 30. When contracting, the cover plates 20 are retracted into the first radial groove group 111 of the outer sleeve 10 and the slots (1111, 1121) of the 201024198 second radial groove group 112. The telescopic mechanism 30 of the above embodiment includes: a telescopic mechanism: a first telescopic module 31 is disposed on a radially inner portion of the first radial slot group 111, and a second telescopic module 32 is disposed in the second radial slot a radially inner portion of the group 112 and a hydraulic cylinder 33 disposed between the first telescopic module 31 and the second telescopic module 32. The hydraulic cylinder 33 has a cylinder portion 331 and a telescopic rod portion 332. The body 331 is connected to the first telescopic module 31 , and the telescopic rod portion 332 is pivotally mounted on the second telescopic module 32 . Of course, the first telescopic module 31 ® needs to have at least one through hole 314 or the second telescopic module 32 needs to have at least one through hole 324 for the hydraulic line 333 connecting the hydraulic cylinder 33 to pass. The first telescopic module 31 includes a first pad 311 disposed at a radially inner portion of the first radial slot group 111. The first pad 311 has a central shaft hole 3111 and a plurality of radial slots 3112 ( Corresponding to each slot 1111 position) and an outer cover 3113 (axially closing the radial slots); a first slider set 312 having a plurality of sliders 3121 corresponding to the radial slots 3112 Each of the sliders 3121 has a top surface 31121, a shoulder portion 31212, and a bottom portion 31214. The top surface 31211 is provided with the cover plate 20 disposed thereon. The shoulder portion 3112 protrudes slightly below the top surface 31211. The outer side of the shoulder portion 31212 and the wall surface of the inner shaft hole 12 is provided with a compressive elastic member 31213, such as a compression spring, the bottom portion 31214 is formed with a slope inclined toward the second radial groove group 112; And a first push rod 313, which has a shaft portion 3131, a tapered portion 3132 having a plurality of inclined surfaces, and a portion 3133. The first push rod 313 is sleeved on the first pad 311. I:: 'The shaft portion 3131 is sleeved on the outer cover of the second ghost 312H-beveled Μ" 1 series top against the first slider The bottom portion 31214 of the 312 is disposed on the one facing the first-to-slot groove group 112, and the cylinder portion 331 is connected to the hydraulic cylinder 33 from the side of the hole 312. The telescopic loosening group 32 includes: a second pad 32 ι disposed on a radially inner portion of the second radial slot group m, the second pad 321 having a central cymbal hole 3211 corresponding to each slot 1121 a plurality of radial chutes 3212 at a position and an outer cover 3213 of the radial chutes 3212 are axially closed; a first/month block, and =2' has a plurality of corresponding ones of the radial chutes Each of the sliders 3221 has a top surface 32, a shoulder portion 32212, and a bottom portion 32214. The top surface 32211 is provided with the cover portion 3212 protruding from the outer side of the top surface 32211. And a compression elastic member 32213 is disposed between the shoulder portion 32212 and the wall surface of the inner shaft hole 12, the bottom portion 32214 is formed with a slope inclined toward the first radial groove group m; and - second The push rod 323 has a shaft portion 323, a tapered portion 3232 having a plurality of inclined surfaces 32321, and a portion 3233, and the second push rod 323 is sleeved thereon. The shaft portion 3231 of the second pad 321 is sleeved on the outer cover 3213, and each inclined surface 32221 of the inclined taper portion 3232 is abutted against the slider 3221 of the second slider group 322. The bottom portion 32214 of the seat portion 3233 is disposed on one side of the first radial groove group 111 to connect the telescopic rod portion 332 of the hydraulic cylinder 33. In the above embodiment, the connection between the first push rod 313 and the hydraulic cylinder 33 and the connection of the second push rod 323 and the hydraulic cylinder 33 are connected by a pin 40 to form a relative joint motion. The connection state helps to push the average distribution of stress. Please refer to FIG. 6 for a schematic view of the expanded state of FIG. 4, and FIG. 7 for a view of the expanded state of FIG. According to the structure of the above embodiment, when the telescopic rod portion 332 of the hydraulic cylinder 33 is extended, the first push rod 313 of the first telescopic module 31 can be axially pushed out, and the first push rod φ 313 is inclined by the 31132 The bottom of each slider 3121 of a slider set 312 4 31214 'the respective sliders 3121 are radially outwardly stretched by the axial center, so that the cover 20 fixed to the top surface 31211 of each slider 3121 protrudes from the outer sleeve The sleeve surface 11 of 10; at the same time, since the hydraulic cylinder 33 is not fixed to the outer sleeve 1〇, and the float is floated between the first telescopic module 31 and the second telescopic module 32, A telescopic module 31 is simultaneously pushed against the second push rod 323 of the first telescopic module 32, and the cover plate 2 is also pushed out of the sleeve surface 11 of the outer sleeve 10 to form a radial expansion; When the φ telescopic 彳 332 of the hydraulic cylinder 33 is contracted, the first push rod 313 and the second push rod 323 simultaneously retract the slides 3121 and the second slider set 322 of the first slider group 312 at this time. The block 3221 retracts the cover plate to the sleeve surface 11 of the outer sleeve by sliding the elastic elastic members 31213, 32213 to the axial center. The characteristic is that the paper tube manufactured by the expansion shaft generally has different degrees of sentence, and the size of the inner tube is also slightly different. The hydraulic cylinder in the telescopic mechanism of the invention adopts a floating (non-fixed) design, so it can be provided. The 201024198 cover plate on both sides of the expansion shaft has different _ bulging amount, which can be supported by the paper tube & = and according to the design of the present invention. In addition: This hair: = The paper tube is not easy to loosen and slide when rotating. 1,=::charge =: 'With the pusher bevel and the bottom of the slider 2 force ❹ Provide relatively large expansion force and withstand high load (four). The mentionable technology is only a description of the present invention. The implementation of the technical means used to solve the problem or the effect of the embodiment =: r, that is, the equivalent change and modification of the scope of the present invention: the benefit =: BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective exploded view of an embodiment of the present invention. FIG. 2 is a cross-sectional view showing a combination of an embodiment of the present invention. FIG. 4 is a cross-sectional view of the front view 4-4 of FIG. 3; FIG. 5 is a cross-sectional view of the side view 5_5 of FIG. 3; FIG. 6 is a cross-sectional view showing the expanded state of FIG. 4 and FIG. Schematic. [Main component symbol description] 10 outer bushing 201024198

I

11 bushing surface 111 first radial groove group 1111 slot 112 second radial slot group 1121 slot 12 inner shaft hole 20 cover plate 21 groove 30 telescopic mechanism 31 first telescopic module 311 first viewing block 3111 center Shaft hole 3112 Radial chute 3113 Cover 312 First slider set 3121 Slider 31211 Top surface 31212 Shoulder 31213 Compression elastic element 31214 Bottom 313 First push rod 3131 Shaft part 3132 Oblique taper part 31321 Bevel 201024198

3133 Seat 314 Through Hole 32 Second Telescopic Module 321 Second Pad 3211 Center Shaft Hole 3212 Radial Chute 3213 Cover 322 Second Block Set 3221 Slider 32211 Top Surface 32212 Shoulder 32213 Compression Elastic Element 32214 Bottom 323 Second push rod 3231 Shaft part 3232 Inclined taper 32321 Inclined surface 3233 Seat 324 Through hole 33 Hydraulic cylinder 331 Cylinder part 332 Telescopic rod part 333 Hydraulic line 40 Pin

Claims (1)

201024198 I VII. Patent Application Range·· 1. 1. An expansion shaft comprising: an outer sleeve having a sleeve surface and an inner shaft hole, and respectively having a first surface on the sleeve surface at both ends of the axial direction a radial groove group and a second radial groove group, the first radial groove group and the second radial groove group respectively have a plurality of slots communicating with the inner shaft hole; a plurality of cover plates are respectively set The slot-hole of the first radial slot group and the slot of the second radial slot group; and Φ a telescopic mechanism disposed on the first radial slot group and the second radial slot group In the inner shaft hole, the telescopic mechanism is fixed for each cover plate, and when the telescopic mechanism is stretched, the cover plates are pushed out radially outward from the shaft center, so that the cover plates protrude And the surface of the sleeve of the outer sleeve is retracted by the first radial groove group and the second radial groove group of the outer sleeve when the telescopic mechanism is contracted . 2. The expansion shaft of claim 1, wherein the telescopic mechanism comprises: a first telescopic module disposed at a radially inner portion of the first radial slot group, and a second telescopic module disposed thereon a radially inner portion of the second radial groove group and a hydraulic cylinder disposed between the first telescopic module and the second telescopic module, the hydraulic cylinder having a cylinder portion and a telescopic rod portion, the cylinder portion The first telescopic module is connected, and the telescopic rod portion is connected to the second telescopic rod portion. 3. The expansion shaft of claim 2, wherein the first telescopic module comprises: a first pad disposed on a radially inner portion of the first radial slot group, 12 201024198 the first The pad has a towel shaft hole, a plurality of radial sliding slots corresponding to each slot position, and an axial sealing outer cover of the radial slot; a first slider group having corresponding to the a plurality of slider blocks of the chute have a top surface - a shoulder portion and a bottom portion, the top surface is provided for the rocker plate, the shoulder portion protrudes from the outer side of the top surface, and the shoulder portion is A compression elastic member is disposed between the inner shaft hole walls, and the bottom portion forms a slope 丨 and a push rod inclined toward the second radial groove group, and sequentially has a shaft portion and a plurality of slopes The oblique material and - (4) 'the first push rod is sleeved in the central shaft hole of the first-view block, and the mature rod portion is sleeved on the outer cover, and each inclined surface of the inclined taper portion is topped by the first - Wei mosquito The bottom portion of the special block, the seat portion is disposed on a side facing the second radial groove group to connect the hydraulic rainbow Cylinder unit. 4. If applying for the second handle-shaped shaft, the second telescopic mold includes: = a first pad disposed on a radially inner portion of the first control groove group, the second pad having a central shaft hole, a plurality of radial chutes corresponding to the position of each slot, and a cover plate axially closing the plurality of radial chutes; the π-block group having a plurality of slips corresponding to the chutes The block 'per-slider has a top surface-shoulder portion and a bottom portion, the top surface is provided for the cover plate to be 'the shoulder portion protrudes from the outer side of the top surface, and the shoulder portion and the inner shaft portion Between the walls of the holes, there is provided a slanting element, the slant forming a slope inclined toward the first radial groove group; and a second ejector having a shaft portion, having a plurality of 13 201024198 , the inclined taper of the inclined surface and a part, 誃ί 财 纠 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , - the department is provided in (4) the first part of the "block", the telescopic rod portion of the cylinder, and one side of the cylinder is connected to the hydraulic pressure 5. As described in the application (4) 2 The expansion groove group and the second radial groove, wherein the first radial direction is the outer sleeve of the sleeve surface. The slot holes are radially equiangularly distributed. 6. According to the second aspect of the patent application. The expansion shaft, the module has at least one through hole in the red, the first - telescopic. The hydraulic circuit of the fly-by-night pressure cylinder is 7. The expansion module according to claim 2 has at least one through hole to ^ The second telescopic force is passed through. The hydraulic pipe of the flying night pressure cylinder is the same as the expansion of the liquid cylinder as described in the third paragraph of the patent application. The connection state of the movement. The formation of a relative lock. 9. The expansion material as described in item 4 of the patent application, the connection state of the joint movement, the slanting axis connection, forming a relative patent for the scope of the patent. The expansion, "=-curved surface, the bending degree of the same with the outer sleeve of the sleeve I as disclosed in claim 1 of the expansion shaft, wherein each cover is shown in the form 201024198 mask has a non-slip structure. 12. The expansion shaft of claim 11, wherein the anti-slip structure is a plurality of grooves disposed on a surface of each cover plate. 13. The expansion shaft of claim 11, wherein the anti-slip structure directly forms a high coefficient of friction layer on the surface of the cover sheet using a surface treatment technique. 14. The expansion shaft of claim 11, wherein the anti-slip structure is applied to a surface of the cover plate with a high coefficient of friction. 15