CN112938806B - Improved generation becomes width of cloth assembly pulley - Google Patents
Improved generation becomes width of cloth assembly pulley Download PDFInfo
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- CN112938806B CN112938806B CN202110536289.9A CN202110536289A CN112938806B CN 112938806 B CN112938806 B CN 112938806B CN 202110536289 A CN202110536289 A CN 202110536289A CN 112938806 B CN112938806 B CN 112938806B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
- B66D3/08—Arrangements of sheaves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pulleys (AREA)
Abstract
The invention discloses an improved variable-amplitude pulley block, which relates to the technical field of pulley blocks and comprises a mounting bracket and two pulley blocks symmetrically connected to the mounting bracket, wherein one end of the mounting bracket, which is far away from the two pulley blocks, is connected with a guy cable, the two pulley blocks respectively comprise a central shaft and three sliding wheels rotatably connected to the central shaft through bearings, three circular interlayers are symmetrically arranged in two sides of the mounting bracket, the two central shafts respectively coaxially penetrate through the three circular interlayers, a limiting structure is matched with the circular interlayers and the sliding wheels to form a full-surrounding limiting effect on a steel wire rope, a plurality of rotating blocks in a radial limiting structure buffer and roll extrusion limiting effects on the fluctuation of the steel wire rope, the plurality of rotating blocks in the annular limiting structure are in winding connection and extend out of the two sides of the steel wire rope on the sliding wheels under the action of annular spring force, and under the protection of multiple buffering and limiting effects, effectively restrain the fluctuation of the steel wire rope in the motion process and prolong the service life of the steel wire rope.
Description
Technical Field
The invention relates to the technical field of pulley blocks, in particular to an improved amplitude-variable pulley block.
Background
The luffing pulley block is one of important components of the crane, and assists the rope of the crane to run in the working process of the crane. In the working process of a common variable-amplitude pulley block, a movable pulley block is easy to incline and bear force, so that a central shaft in the pulley block is stressed and inclined, and the stability and the safety of the pulley block in the using process are influenced. The patent with application number CN201510026344.4 granted by the invention of China discloses a smooth amplitude-variable pulley block, which comprises: pulley installing support, first assembly pulley and second assembly pulley … … ", its first assembly pulley and the second assembly pulley through parallel symmetry setting, make center pin and cable keep perpendicular to improve the stability of the assembly pulley use that becomes width of cloth, however, when the restriction to wire rope, only adopt to paste connecting rod and stock bolt on the excircle of leaning on hot rolling pulley to carry on spacingly, spacing effect is relatively poor, can't effectively restrain the fluctuation of wire rope in the motion process, and then influence wire rope's life.
Disclosure of Invention
The invention provides an improved amplitude-variable pulley block, and aims to solve the problem that the fluctuation of a steel wire rope in the movement process cannot be effectively inhibited only by limiting by a connecting rod and a long rod bolt which are attached to the outer circle of a hot-rolled pulley in the traditional technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an improved generation variable width assembly pulley, includes two assembly pulleys of installing support and symmetric connection on the installing support, it is connected with the cable to keep away from two assembly pulley one end on the installing support, two the assembly pulley all includes the center pin and rotates the three movable pulley of connection on the center pin through the bearing, three circular intermediate layer has all been seted up to the symmetry in the installing support both sides, and wherein two equal coaxial three circular intermediate layers that run through of center pin, and the movable pulley is located the circle and presss from both sides the inslot, still includes:
the limiting device is used for limiting the steel wire rope wound on the sliding wheel so as to prevent the steel wire rope from separating from the sliding wheel, and comprises a supporting structure, a limiting structure, a radial limiting structure and an annular limiting structure, wherein,
the supporting structure is used for forming a supporting effect on components connected onto the supporting structure subsequently, the supporting structure comprises a plurality of annular frames, the annular frames are coaxially and fixedly connected to the outer peripheral side of the mounting bracket forming the circular interlayer in a one-to-one correspondence mode, annular grooves are coaxially formed in the annular frames in a penetrating mode, a plurality of limiting structures are connected into the annular grooves,
the limiting structure is used for matching with the circular interlayer to form a limiting effect on the wire rope wound and connected on the sliding wheel and comprises rotating pipes and a fixed cable, the rotating pipes are in one-to-one corresponding sliding connection in the annular groove, the inner part of each rotating pipe is rotatably connected with the same fixed cable, the fixed cable is connected with a radial limiting structure, and an annular limiting structure is connected between every two adjacent rotating pipes,
the radial limiting structure is used for supporting and limiting the steel wire rope wound on the sliding wheel, the radial limiting structure comprises a plurality of tubular shafts and rotating blocks coaxially and rotatably connected to the outer peripheral sides of the tubular shafts, the tubular shafts are sleeved on the fixed cables in the circular interlayer in a one-to-one correspondence manner,
the annular limiting structure is used for forming clamping and limiting effects on two sides of a steel wire rope which is in butt joint with and extends out of the sliding wheel, the annular limiting structure comprises a plurality of annular limiting frames and annular springs, the annular limiting frames are connected in the annular groove in a rotating mode and located between adjacent rotating tubes of the same circular interlayer in a rotating mode, the annular springs are sleeved on the annular limiting frames, and two ends of each annular spring are fixedly connected with the two rotating tubes respectively.
Preferably, the annular frame is the major arc form, and the one end outside runs through and has seted up the opening, opening intercommunication ring channel and external are conveniently installed follow-up part on the annular frame from the opening, the opening internal rotation is connected with the rotation card, fixedly connected with reset spring between rotation card and the opening controls opening and shutting of rotation card.
Preferably, the aperture of the opening is equal to the radial section length of the annular groove and equal to the outer diameter of the rotating pipe, the return spring is in an initial stretching state and enables the rotating clamp to be clamped on the opening, and the rotating clamp is automatically clamped on the opening in a rotating mode after being loosened under the elastic force action of the return spring, so that the mounted component is prevented from falling off from the opening.
Preferably, a plurality of fixed cable both ends among the limit structure are connected with same fixed disk respectively, two the fixed disk rotates to be connected on the installing support two sides, and with the coaxial setting of center pin, makes other section fixed cables 62 tighten after one section fixed cable is pulled and improves its spacing effect to wire rope.
Preferably, the fixed disc is coaxially provided with an annular rope groove, annular ropes are in clearance fit in the annular rope groove, the plurality of fixed ropes are fixedly connected to the annular ropes along the radial direction, and when one section of fixed rope is extruded, other fixed ropes are tightened to improve the limiting effect of the fixed rope on the steel wire rope.
Preferably, the tubular shaft is made of an elastic tube, the middle part of the tubular shaft is fixedly connected with the fixed cable, the peripheral side of the rotating block is arc-shaped, the arc-shaped curvature is matched with the curvature of the peripheral side of the steel wire rope, and the rotating block rotates along with the steel wire rope when the steel wire rope fluctuates, so that friction between the rotating block and the steel wire rope is reduced.
Preferably, the elastic coefficient of the annular limiting frame is larger than the radial elastic coefficient of the annular limiting frame in the rotating direction, the annular limiting frame and the annular spring are initially in a compressed state, and under the elastic action of the annular limiting frame and the annular spring, the rotating blocks at the two ends of the annular limiting frame are in butt-winding connection and extend out of the two sides of the steel wire rope on the sliding wheel to form clamping and limiting effects.
Preferably, the equal coaxial fixedly connected with spacing ring in rotating tube both ends, two the radial groove has been seted up to the spacing ring one side that deviates from mutually, the turning block both ends slide and rotate to be connected in two adjacent radial inslots, form spacingly to the direction of motion of turning block, avoid the turning block distortion to influence its spacing effect to wire rope.
Preferably, radial groove is along the radial setting of spacing ring and circular intermediate layer, radial inslot fixedly connected with extrusion spring, extrusion spring keeps away from radial groove one end and turning block fixed connection, extrusion spring is original to be in the extrusion state, and the turning block after removing under extrusion spring's elastic action resumes initial condition, keeps the spacing effect to wire rope.
Preferably, fixedly connected with piezoelectric patches between extrusion spring and the radial groove, it is a plurality of all electrically connected with the controller of piezoelectric patches, place the installing support in the controller, and electrically connected with signal generator, the controller receives the piezoelectric signal of a plurality of piezoelectric patches and triggers signal generator when signal voltage threshold is higher than preset threshold, signal generator adopts prior art, when local wire rope fluctuating intensity is too big, reminds the staff.
Compared with the prior art, the invention has the following beneficial effects:
1. when the limiting device is installed, the rotating clamp is extruded to open the opening on the annular frame, the plurality of limiting structures, the radial limiting structures connected to the plurality of limiting structures and the annular limiting structures connected among the plurality of limiting structures are pushed into the annular groove of the annular frame, the rotating clamp is loosened, the installation of the limiting device is completed, the installation and the disassembly are convenient, and the limiting device is easy to separately overhaul and replace parts.
2. After the limiting device is installed, the plurality of rotating blocks form a pressing limiting effect on the steel wire rope, and the steel wire rope is prevented from falling off the sliding wheel by forming a full-surrounding effect by matching the circular interlayer and the sliding wheel; meanwhile, the rotating blocks positioned at the two ends of the annular groove form clamping and limiting effects on the two sides of the steel wire rope, so that the contact effect of the steel wire rope and the sliding wheel is ensured, and the stability of the steel wire rope in the operation process is ensured.
3. When a section of steel wire rope generates fluctuation to extrude the rotating block, the rotating block overcomes the elasticity of the extrusion spring and slides along the radial groove, and the buffering and limiting effects are formed on the steel wire rope; meanwhile, the section of the fixed cable connected with the rotating block is pulled, so that the fixed cables positioned in other circular clamping layers are tightened, the pulling force of the fixed cables is transmitted through the annular cables, so that other fixed cables are tightened, and the limiting effect of the fixed cables at other positions on the steel wire rope is improved.
To sum up, form the spacing effect of full encirclement at limit structure cooperation circular intermediate layer and sliding wheel to the wire rope, the spacing effect of a plurality of turning blocks to the undulant buffering of wire rope and roll extrusion among the radial limit structure, a plurality of turning blocks under the annular spring elastic force effect in the annular limit structure to the wire wrap-around and extend the spacing effect of centre gripping that the wire rope both sides formed on the sliding wheel, under the protection of multiple buffering spacing, effectively restrain the undulant of wire rope in the motion process, extension wire rope's life.
Drawings
Fig. 1 is a schematic structural diagram of an improved variable-amplitude pulley block provided by the invention;
fig. 2 is a schematic top view of a part of an improved variable-amplitude pulley block according to the present invention;
FIG. 3 is a schematic view of a part of a supporting structure of an improved variable-amplitude pulley block provided by the invention;
fig. 4 is a schematic plane development view of a limiting structure, a radial limiting structure and an annular limiting structure of an improved variable-amplitude pulley block provided by the invention;
FIG. 5 is a schematic structural diagram of a fixed disk of an improved variable-amplitude pulley block provided by the invention;
fig. 6 is a schematic structural diagram of a limiting ring of an improved amplitude-variable pulley block provided by the invention.
In the figure: the device comprises a mounting bracket 1, a circular interlayer 11, a central shaft 2, a sliding wheel 3, a limiting device 4, a supporting structure 5, an annular frame 51, an opening 511, a rotating clamp 512, a return spring 513, an annular groove 52, a limiting structure 6, a rotating pipe 61, a limiting ring 611, a radial groove 612, an extrusion spring 613, a piezoelectric sheet 614, a fixed cable 62, a fixed disc 63, a radial limiting structure 7, a pipe shaft 71, a rotating block 72, an annular limiting structure 8, an annular limiting frame 81 and an annular spring 82.
Detailed Description
The technical solutions 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, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, an improved generation variable-amplitude pulley block comprises a mounting bracket 1 and two pulley blocks symmetrically connected to the mounting bracket, wherein one end of the mounting bracket 1, which is far away from the two pulley blocks, is connected with a pull cable, the two pulley blocks respectively comprise a central shaft 2 and three sliding wheels 3 rotatably connected to the central shaft 2 through bearings, three circular interlayers 11 are symmetrically arranged in two sides of the mounting bracket 1, the two central shafts 2 coaxially penetrate through the three circular interlayers 11, the sliding wheels 3 are positioned in the circular interlayers 11, and a steel wire rope is wound on the two pulley blocks to form variable-amplitude operation of the steel wire rope.
Further comprising: and the limiting device 4 is used for limiting the steel wire rope wound on the sliding wheel 3 so as to prevent the steel wire rope from being separated from the sliding wheel 3, and the limiting device 4 comprises a supporting structure 5, a limiting structure 6, a radial limiting structure 7 and an annular limiting structure 8.
Referring to fig. 3, the supporting structure 5 is used for forming a supporting effect on a component subsequently connected thereto, the supporting structure 5 includes a plurality of annular frames 51, the plurality of annular frames 51 are coaxially and fixedly connected to the outer peripheral side of the mounting bracket 1 forming the circular interlayer 11 in a one-to-one correspondence manner, an annular groove 52 is coaxially formed in the annular frame 51 in a penetrating manner, and a plurality of limiting structures 6 are connected in the annular groove 52.
The annular frame 51 is in a major arc shape, an opening 511 penetrates through the outer side of one end of the annular frame 51, the major arc section of the annular frame 51 is matched with the major arc section of the steel wire rope wound on the sliding wheel 3, the opening 511 is communicated with the annular groove 52 and the outside, a rotating clamp 512 is rotatably connected in the opening 511, a return spring 513 is fixedly connected between the rotating clamp 512 and the opening 511, the opening 511 can be opened and closed by poking and loosening the rotating clamp 512, and subsequent components can be conveniently installed on the annular frame 51 through the opening 511.
The caliber of the opening 511 is equal to the radial section length of the annular groove 52 and equal to the outer diameter of the rotating pipe 61, so that the rotating pipe 61 is convenient to slide the opening 511 into the annular groove 52, the return spring 513 is initially in a stretching state and enables the rotating clamp 512 to be clamped on the opening 511, and after the rotating clamp 512 is loosened, the rotating clamp 512 automatically rotates and is clamped on the opening 511 under the elastic force of the return spring 513, and the follow-up part is prevented from being separated from the opening 511.
Referring to fig. 4-6, the limiting structure 6 is used for cooperating with the circular interlayer 11 to form a limiting effect on the wire rope wound on the sliding wheel 3, the limiting structure 6 includes a plurality of rotating pipes 61 and a fixing rope 62, the rotating pipes 61 are slidably connected in the annular groove 52 in a one-to-one correspondence manner, and are connected with the same fixing rope 62 in a rotating manner, when one section of the wire rope extrudes the fixing rope 62 in a fluctuating manner, the fixing rope 62 forms a limiting effect on the fixing rope and is tensioned by the fixing rope 62, and the limiting effect on the fixing rope 62 on other sections of the wire rope is further improved.
The two ends of the fixed cables 62 in the plurality of limiting structures 6 are respectively connected with the same fixed disc 63, the two fixed discs 63 are rotatably connected to the two sides of the mounting bracket 1 and are coaxially arranged with the central shaft 2, and the fixed cables 62 in the plurality of limiting structures 6 are connected together, so that when one section of the fixed cable 62 is extruded, other fixed cables 62 are tensioned, and the limiting effect of other fixed cables 62 is improved.
An annular rope groove is coaxially formed in the fixed disc 63, an annular rope is in clearance fit in the annular rope groove, the plurality of fixed ropes 62 are fixedly connected to the annular rope along the radial direction, and the tensile force of the fixed ropes 62 is transmitted through the annular rope.
Be connected with radial limit structure 7 on the fixed cable 62, radial limit structure 7, be used for supporting and spacing effect to the wire rope of wraparound on movable pulley 3, radial limit structure 7 includes a plurality of hollow shafts 71 and coaxial rotation and connects the turning block 72 at hollow shaft 71 periphery side, a plurality of hollow shafts 71 one-to-one correspondence cup joints on the fixed cable 62 in a plurality of circular intermediate layers 11, turning block 72 supports and leans on wire rope, form spacing effect to it, and form spacing effect to it when wire rope is undulant, and turning block 72 rotates and reduces the friction of the two.
The tubular shaft 71 is made of an elastic tube, the middle part of the tubular shaft is fixedly connected with the fixed cable 62, a buffering effect is formed on the tubular shaft 71 under the action of the elastic force of the steel wire rope when the steel wire rope fluctuates, the peripheral side of the rotating block 72 is arc-shaped, the arc-shaped curvature is matched with the curvature of the peripheral side of the steel wire rope, the contact area between the tubular shaft and the steel wire rope is favorably increased, the rolling friction is guaranteed to be formed, and the friction force is reduced.
Be connected with annular limit structure 8 between the adjacent rotating-tube 61, annular limit structure 8, be used for to the wire-wrap and extend the wire rope both sides on the movable pulley 3 and form centre gripping and spacing effect, annular limit structure 8 includes a plurality of annular spacing 81 and annular spring 82, the equal coaxial rotation of a plurality of annular spacing 81 is connected in ring channel 52 and is located between the adjacent rotating-tube 61 of same circular intermediate layer 11, annular spring 82 has been cup jointed on the annular spacing 81, annular spring 82 both ends respectively with two rotating-tube 61 fixed connection, annular spacing 81 forms spacingly to annular spring 82's shrink expansion direction, make it along ring channel 52 internal motion, avoid it to deviate from ring channel 52 and cause the hindrance to other parts.
The elastic coefficient of the annular limiting frame 81 is larger than the radial elastic coefficient of the annular limiting frame 81 in the rotating direction, wherein the annular limiting frame 81 and the annular spring 82 are both in a compressed state initially, and under the elastic action of the annular limiting frame 81 and the annular spring 82, the rotating blocks 72 at the two ends are in butt joint with and extend out of two sides of the steel wire rope on the sliding wheel 3 to form clamping and limiting effects.
The two ends of the rotating pipe 61 are both coaxially and fixedly connected with limiting rings 611, radial grooves 612 are formed in the opposite sides of the two limiting rings 611, the two ends of the rotating block 72 are connected in the two adjacent radial grooves 612 in a sliding and rotating mode, the moving direction of the rotating block 72 is limited, and the rotating block 72 is prevented from being distorted.
The radial groove 612 is radially arranged along the limiting ring 611 and the circular interlayer 11, the extrusion spring 613 is fixedly connected in the radial groove 612, one end, far away from the radial groove 612, of the extrusion spring 613 is fixedly connected with the rotating block 72, the extrusion spring 613 is initially in an extrusion state, and after the rotating block 72 moves, the initial state is recovered under the elastic action of the extrusion spring 613, so that the limiting effect on the steel wire rope is kept.
Fixedly connected with piezoelectric patches 614 between extrusion spring 613 and radial groove 612, the equal electrically connected with controller of a plurality of piezoelectric patches 614, place the installing support 1 in the controller in, and electrically connected with signal generator, the controller receives the piezoelectric signal of a plurality of piezoelectric patches 614 and triggers signal generator when signal voltage threshold value is higher than preset threshold value, signal generator adopts prior art, thereby when local wire rope fluctuating intensity is too big, remind the staff, with control hoist operating condition, and when still having the signal to remind after hoist operating condition is stable, need to change and maintain each subassembly.
After the steel wire rope is wound on the fixed pulley block and the two pulley blocks, the rotating clamp 512 of the opening 511 of the annular frame 51 is extruded, the rotating clamp 512 overcomes the elasticity of the return spring 513 to open the opening 511, a plurality of rotating pipes 61 in the limiting structure 6 are aligned with the openings 511 on the plurality of annular frames 51 and pushed into the annular groove 52 of the annular frame 51, the plurality of limiting structures 6 and the radial limiting structures 7 and the annular limiting structures 8 connected on the limiting structures 6 are sequentially pushed into the annular groove 52, the rotating clamp 512 is loosened, the installation of parts is completed, and effective limiting is formed on the steel wire rope wound on the sliding wheel 3;
at the moment, the plurality of rotating blocks 72 form a pressing limiting effect on the steel wire rope, the steel wire rope is prevented from falling off the sliding wheel 3 by forming a full surrounding effect on the steel wire rope by matching the circular interlayer 11 and the sliding wheel 3, and meanwhile, the rotating blocks 72 positioned at two ends of the annular groove 52 form a clamping limiting effect on two sides of the steel wire rope, so that the contact effect of the steel wire rope and the sliding wheel 3 is ensured;
when a section of steel wire rope generates wave extrusion on the rotating block 72, the rotating block 72 overcomes the elasticity of the extrusion spring 613 and slides along the radial groove 612 to form buffering and limiting effects on the steel wire rope, meanwhile, the section of fixed cable 62 connected with the rotating block 72 is pulled to tighten the fixed cables 62 positioned in other circular interlayers 11, so that the limiting effect on the steel wire rope is improved, and when a section of fixed cable 62 is extruded, the pulling force of the fixed cable 62 is transmitted through the annular cable to tighten other fixed cables 62, so that the limiting effect of other fixed cables 62 is improved;
when a section of steel wire rope fluctuates, under the elastic action of the annular limiting frame 81 and the annular spring 82, the rotating blocks 72 positioned at the two ends of the annular groove 52 are in butt-winding connection and extend out of the two sides of the steel wire rope on the sliding wheel 3 to form buffering and clamping limiting effects;
therefore, under the protection of multiple buffering and limiting, the fluctuation of the steel wire rope in the motion process is effectively inhibited, and the damage of the steel wire rope is reduced;
when the local steel wire rope fluctuation intensity is too large, the piezoelectric signal generated by the piezoelectric sheet 614 is higher than a preset threshold value, the controller work trigger signal generator reminds workers to control the crane working state, and when the crane working state is stable and is still reminded of signals, all components need to be replaced and maintained.
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 be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The utility model provides an improved generation variable amplitude pulley block, includes two assembly pulleys of installing support (1) and symmetric connection on the installing support, it is connected with the cable, two to keep away from two assembly pulley one end on installing support (1) the assembly pulley all includes center pin (2) and rotates three movable pulley (3) of connection on center pin (2) through the bearing, a serial communication port, three circular intermediate layer (11) have been seted up to equal symmetry in installing support (1) both sides, and wherein two center pins (2) are equal coaxial to be run through three circular intermediate layer (11), and movable pulley (3) are located circular intermediate layer (11), still include:
the limiting device (4) is used for limiting the steel wire rope wound on the sliding wheel (3) to avoid the steel wire rope from separating from the sliding wheel (3), the limiting device (4) comprises a supporting structure (5), a limiting structure (6), a radial limiting structure (7) and an annular limiting structure (8), wherein,
the supporting structure (5) is used for forming a supporting effect on a component subsequently connected onto the supporting structure, the supporting structure (5) comprises a plurality of annular frames (51), the annular frames (51) are coaxially and fixedly connected to the outer peripheral side of the mounting bracket (1) forming the circular interlayer (11) in a one-to-one correspondence mode, an annular groove (52) is coaxially formed in the annular frames (51) in a penetrating mode, a plurality of limiting structures (6) are connected into the annular groove (52),
limiting structure (6) for cooperating circular intermediate layer (11) to form spacing effect to the wire rope of the wraparound on movable pulley (3), limiting structure (6) includes rotating tube (61) and fixed cable (62), and is a plurality of rotating tube (61) one-to-one correspondence sliding connection is in ring channel (52) and inside rotates and is connected with same fixed cable (62), be connected with radial limit structure (7) on the fixed cable (62), adjacent be connected with annular limit structure (8) between rotating tube (61),
the radial limiting structure (7) is used for supporting and limiting the steel wire rope wound on the sliding wheel (3), the radial limiting structure (7) comprises a plurality of pipe shafts (71) and rotating blocks (72) coaxially and rotatably connected to the outer peripheral side of the pipe shafts (71), the pipe shafts (71) are correspondingly sleeved on the fixed ropes (62) in the circular interlayers (11) one by one,
annular limit structure (8) for form centre gripping and spacing effect to the wire rope both sides on the wraparound and extend movable pulley (3), annular limit structure (8) include a plurality of annular spacing framves (81) and annular spring (82), and are a plurality of the equal coaxial rotation of annular spacing frame (81) is connected in ring channel (52) and is located between the adjacent rotating tube (61) of same circular intermediate layer (11), annular spring (82) have been cup jointed on annular spacing frame (81), annular spring (82) both ends respectively with two rotating tube (61) fixed connection.
2. The improved variable-amplitude pulley block as claimed in claim 1, wherein the annular frame (51) is in a shape of a major arc, an opening (511) is formed in the outer side of one end of the annular frame, the opening (511) is communicated with the annular groove (52) and the outside, a rotating clamp (512) is rotatably connected in the opening (511), and a return spring (513) is fixedly connected between the rotating clamp (512) and the opening (511).
3. An improved variable-amplitude pulley block as claimed in claim 2, characterized in that said opening (511) has a diameter equal to the radial section length of the annular groove (52) and equal to the outer diameter of the rotating tube (61), said return spring (513) being initially in tension and engaging the rotating clip (512) on the opening (511).
4. The improved variable-amplitude pulley block as claimed in claim 1, wherein two ends of the fixed cable (62) in the plurality of limiting structures (6) are respectively connected with a same fixed disc (63), and the two fixed discs (63) are rotatably connected to two sides of the mounting bracket (1) and are coaxially arranged with the central shaft (2).
5. The improved width-changing pulley block as claimed in claim 4, wherein said fixed plate (63) is coaxially provided with annular rope grooves, annular ropes are loosely fitted in said annular rope grooves, and a plurality of said fixed ropes (62) are radially and fixedly connected to the annular ropes.
6. The improved variable amplitude pulley block as claimed in claim 1, wherein the tubular shaft (71) is made of an elastic tube and the middle part of the tubular shaft is fixedly connected with the fixed cable (62), the circumferential side of the rotating block (72) is arc-shaped, and the curvature of the arc-shaped is matched with that of the circumferential side of the steel wire rope.
7. An improved variable-amplitude pulley block according to claim 1, characterized in that the elastic coefficient of the annular limiting frame (81) in the rotation direction thereof is larger than the radial elastic coefficient thereof, wherein the annular limiting frame (81) and the annular spring (82) are initially in a compressed state.
8. The improved variable-amplitude pulley block as claimed in claim 1, wherein both ends of the rotating tube (61) are coaxially and fixedly connected with limiting rings (611), radial grooves (612) are formed in the opposite sides of the two limiting rings (611), and both ends of the rotating block (72) are slidably and rotatably connected in two adjacent radial grooves (612).
9. The improved variable-amplitude pulley block as claimed in claim 8, wherein the radial groove (612) is radially arranged along the limiting ring (611) and the circular interlayer (11), a pressing spring (613) is fixedly connected in the radial groove (612), one end of the pressing spring (613), which is far away from the radial groove (612), is fixedly connected with the rotating block (72), and the pressing spring (613) is initially in a pressing state.
10. The improved variable-amplitude pulley block as claimed in claim 9, wherein piezoelectric patches (614) are fixedly connected between the pressing spring (613) and the radial groove (612), a controller is electrically connected to each of the plurality of piezoelectric patches (614), the controller is embedded in the mounting bracket (1) and is electrically connected to a signal generator, and the controller receives piezoelectric signals from the plurality of piezoelectric patches (614) and triggers the signal generator when a signal voltage threshold is higher than a preset threshold.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110536289.9A CN112938806B (en) | 2021-05-17 | 2021-05-17 | Improved generation becomes width of cloth assembly pulley |
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| CN202110536289.9A CN112938806B (en) | 2021-05-17 | 2021-05-17 | Improved generation becomes width of cloth assembly pulley |
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| CN102139837A (en) * | 2011-03-29 | 2011-08-03 | 南通润邦重机有限公司 | Compact luffing winch for offshore wind power equipment installation engineering cranes |
| CN102923608A (en) * | 2012-11-16 | 2013-02-13 | 无锡市华星船舶设备有限公司 | Brake device of amplitude-variable winch |
| CN104555730B (en) * | 2015-01-20 | 2016-08-24 | 江苏振东港口机械制造有限公司 | A kind of steadily luffing assembly pulley |
| CN112390165A (en) * | 2020-11-16 | 2021-02-23 | 中交二航局第四工程有限公司 | Improved cable hoisting device |
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2021
- 2021-05-17 CN CN202110536289.9A patent/CN112938806B/en active Active
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