CN115477219A - Rope wheel assembly and hoistway construction hoist without sky beam - Google Patents

Abstract

The invention provides a sheave assembly and a beam-free hoistway construction elevator. The sheave assembly includes: a sheave body, on which an annular and coaxial rope groove is formed; a guide part, on which a limit structure is formed, and the limit structure is configured to receive The winding-in section or the winding-out section of the force rope is pulled out from the tangential direction of the rope groove, so that the winding-in section and the winding-out section are spatially staggered. On the basis of the sheave body, the present invention adds a guide part, which is separated by a limit structure on the guide part, so that the winding-in section or the winding-out section of the stressed rope deviates from the tangential direction of the rope groove, that is, the One of the winding-in section and the winding-out section is shifted away from the other, so that at the original position where the winding-in section and the winding-out section interfere with each other and rub against each other, the two will be in the position of the limiting structure. Under the action of deflection, they are spaced apart from each other, thereby avoiding excessive wear of the force-bearing rope and improving the reliability of the operation of the construction hoist.

Description

Rope wheel assembly and hoistway construction hoist without sky beam

technical field

The invention relates to the technical field of construction elevators, in particular to a sheave assembly and a beam-free hoistway construction elevator.

Background technique

There are two types of traditional shaft construction elevators: traction type and SC type. The former needs to install sky beams, hanging cages, counterweights and traction systems in the hoistway, and the counterweight will occupy the installation space of the hoisting cage, which reduces the available space in the hoistway and reduces the space utilization rate; the sky beam structure needs to be installed during the construction process. Lifting is carried out during mid-level ascent, and a sky beam must be reserved on the well wall of the building to place a hole, which leads to an increase in safety hazards during the ascent process and a slow ascent speed. The latter has the problems of high noise and slow speed due to the meshing of the rack and pinion, which makes the noise in the cage too loud and the lifting slow during the lifting process, which leads to the poor experience of the SC series hoistway construction hoist.

For this reason, the applicant considers applying the climbing hoist to the construction hoist to overcome the problems existing in the traditional traction and SC hoistway construction hoists. However, in the prior art, when the steel wire rope passes through the rope wheel assembly of the climbing hoist, there will be a problem of mutual friction at the crossing part. The problem of wire rope wear is shortened construction life and increased maintenance frequency, which increases the maintenance cost of the elevator and reduces the safety of use.

Contents of the invention

In view of the above-mentioned problems, the present invention is proposed in order to provide a sheave assembly and a hoistway construction elevator without a sky beam to overcome the above-mentioned problems or at least partially solve the above-mentioned problems, which can solve the problem of the wire rope winding in and out of the sheave in the prior art. Sometimes it is easy to interfere with each other and cause friction and entanglement.

Specifically, the present invention provides a sheave assembly, comprising:

The sheave body, the sheave body is formed with an annular and coaxial rope groove;

A guide part, a limit structure is formed on the guide part, and the limit structure is configured to pull out the winding-in section or the winding-out section of the stressed rope from the tangential direction of the rope groove, so that the winding The incoming segment and the outgoing segment are spatially interleaved.

Preferably, the limiting structure is a guide groove distributed alternately with the rope groove.

Preferably, the sheave assembly also includes:

a wheel frame, the sheave body is rotatably connected to the wheel frame, and the guide component is a guide wheel spaced parallel to the sheave body and rotatably connected to the wheel frame; and

The guide groove is a coaxial ring groove formed on the outer circumference of the guide wheel.

Preferably, there are more than two rope grooves distributed at intervals in the axial direction of the sheave body; and

The guide grooves are set in one-to-one correspondence with the rope grooves.

Preferably, the guide member is in a first position and/or a second position and/or a third position relative to the sheave body, and the first position, the second position and the third position are configured to The winding-in section or the winding-out section is distributed sequentially along the rope length direction away from the sheave body, and at the second position, the winding-in section and the winding-out section are spatially interlaced.

Preferably, the sheave assembly also includes:

A rope-pressing part, the rope-pressing part is configured to block in the pulling-out direction of the winding-in section of the force-bearing rope, so as to form the entrance of the winding-in section on the sheave body or the Detour out of the segment's exit.

Preferably, the rope pressing part is located on the pulled-out side of the rope groove; and

The sheave assembly also includes:

a wheel frame, the sheave body is rotatably connected to the wheel frame;

A rope-pressing bracket, the rope-pressing bracket is located around the sheave body and is fixedly connected or integrally formed on the wheel frame; and

The rope-pressing part is a rod whose length extends radially along the sheave body, one end of the rope-pressing part is rotatably connected to the rope-pressing bracket, and the other end is in clearance fit with the sheave body. free end.

Preferably, the sheave body is also formed with an annular matching groove that matches the free end and is parallel to the rope groove, the matching groove communicates with or is adjacent to the rope groove, and the matching groove The bottom surface of the groove is a cylindrical surface parallel to the axis of the sheave and/or a conical surface whose small end connects with the rope groove.

Preferably, the sheave body is also formed with a buffer groove communicating with the rope groove and/or a conical surface whose small end connects with the rope groove, and the buffer groove and/or the conical surface It is configured to block the pull-out direction of the warp-winding section of the stressed rope, so as to form an entrance of the winding-in section or an exit of the winding-out section on the sheave body.

Another object of the present invention is to provide a hoistway construction hoist without a sky beam using the above-mentioned sheave assembly, which includes:

Stress rope, the upper end of the stress rope is configured to be fixed on the hoistway wall, and the lower end is connected with a counterweight;

A pressure-rope elevator, the climbing elevator includes the above-mentioned rope sheave assembly.

The beneficial effects of the present invention are:

On the basis of the sheave body, the present invention adds a guide part, which is separated by a limit structure on the guide part, so that the winding-in section or the winding-out section of the stressed rope deviates from the tangential direction of the rope groove, that is, the One of the winding-in section and the winding-out section is shifted away from the other, so that at the original position where the winding-in section and the winding-out section interfere with each other and rub against each other, the two will be in the position of the limiting structure. Under the action of deflection, they are spaced apart from each other, thereby avoiding excessive wear of the force-bearing rope, increasing the service life of the force-bearing rope, and improving the reliability of the operation of the construction hoist.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic structural diagram of a beam-less hoistway construction elevator according to an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a climbing hoist according to an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a sheave assembly according to an embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a 360° winding manner of a stressed rope on a sheave assembly according to an embodiment of the present invention;

5 is a schematic structural diagram of a sheave assembly according to a second embodiment of the present invention;

6 is a schematic structural diagram of a sheave assembly according to a third embodiment of the present invention;

Fig. 7 is a schematic structural diagram of a connection structure between a rope-pressing component and a rope-pressing bracket according to a third embodiment of the present invention;

Fig. 8 is a schematic structural diagram of a 360° winding manner of the stress rope on the sheave assembly according to the third embodiment of the present invention;

Fig. 9 is a schematic structural diagram of an S-shaped rope winding method of a stressed rope on a sheave assembly according to a fourth embodiment of the present invention.

detailed description

The following describes the sheave assembly and the hoistway construction elevator without a sky beam according to the embodiment of the present invention with reference to FIGS. 1 to 9 . In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features . Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. When a feature "comprises or comprises" one or some of the features it encompasses, unless specifically stated otherwise, this indicates that other features are not excluded and that other features may be further included.

Unless otherwise expressly specified and limited, terms such as "disposed", "installed", "connected", "connected", "fixed" and "coupled" should be interpreted in a broad sense, for example, it may be a fixed connection or a detachable Disconnected connection, or integrated; may be mechanically connected, may also be electrically connected; may be directly connected, may also be indirectly connected through an intermediary, may be an internal communication between two components or an interactive relationship between two components, unless otherwise There are clear limits. Those of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention according to specific situations.

In addition, in the description of this embodiment, the first feature being "on" or "under" the second feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact but is through additional feature contacts between them. That is to say, in the description of this embodiment, the first feature being "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicating the level of the first feature The height is higher than the second feature. "Below", "beneath" or "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this embodiment, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "examples," "specific examples," or "some A specific feature, structure, material, or characteristic described in an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Fig. 1 is a schematic structural diagram of a beam-free hoistway construction elevator according to an embodiment of the present invention, as shown in Fig. 1, and with reference to Figs. The construction hoist is mainly composed of a hanging cage 100, a guide rail 200, a stressed rope 300 and a climbing hoist 400. Wherein, the hanging cage 100 is configured to carry people and/or objects, as a way of lifting and transporting people or goods. The guide rail 200 extends vertically and is configured to be fixed on the wall of the hoistway. The guide rail 200 guides and moves up and down and is connected with a guide shoe connected to the cage 100, so that the vertical lifting of the cage 100 can be realized through the cooperation of the guide rail 200 and the guide shoe. . The upper section of the stress rope 300 is connected with a rope fixing device 500 for fixing on the well wall. The so-called well wall here can be the vertical well wall of the fixed building well, or the floor deck or well cover plate of the building after the roof is capped. , and wherein the rope fixing device 500 comprises a rope head assembly and an angle support, wherein the rope end of the stressed rope 300 is fixed on the angle support through the rope head assembly, and then the angle support is used as a wall bracket, and the The rope head is fixed on the hoistway wall, and as an alternative, the rope fixing component can also use other forms, such as the form of a rope wheel with a reserved section, directly fixed on the steel bar of the floor deck, etc., but it should be pointed out that , the rope fixing assembly can be disassembled for the second time when ascending; the lower section is connected with a self-weight counterweight 700 for pulling down the stressed rope 300, and the counterweight 700 can be a plumb weight , can also be a spring with pre-tightening force, etc., preferably, the counterweight 700 is detachably connected to the lower section, so as to cooperate with the force-bearing rope 300 to move downward when lifting the floor. The climbing hoist 400 is installed on the cage 100 and is wound and connected by the stressed rope 300, the climbing hoist 400 is configured to climb along the stressed rope 300, preferably, the The lower section of the force rope 300 is also provided with a reserved section located below the counterweight 700 and configured to be wound and placed at the bottom of the hoistway, so as to reserve some length of the force rope 300 at the bottom of the hoistway to avoid In the layering process, the stress rope 300 needs to be replaced. The climbing hoist 400 includes a drive motor 410 and a sheave assembly 420 connected by transmission. The drive motor 410 provides power to the sheave assembly 420 to drive the sheave assembly 420 to rotate forward and reverse to realize the lifting of the cage 100 .

In some embodiments of the present invention, the sheave assembly 420 includes a sheave body 421 and a guide member, wherein an annular and coaxial rope groove 4211 is formed on the sheave body 421, and a limiting structure is formed on the guide member. The position-limiting structure is configured to pull out the winding-in section or the winding-out section of the force-bearing rope 300 from the tangential direction of the rope groove, so that the winding-in section and the winding-out section are spatially staggered. The limit structure plays a role of separation between the winding-in section and the winding-out section, so that the winding-in section and the winding-out section are at the position where they should intersect, because the winding-in section and the winding-out section One of the output segments is shifted, thereby deviating from the original crossing path and realizing spatial interleaving. In some preferred embodiments, the guide part can be connected to various positions on the force rope 300, on the wheel frame, on the cage, on the hoistway wall, etc., and its main function is to provide support for the position-limiting structure; and the position-limiting As the structure separating the winding-in section and the winding-out section, the limit structure can be divided into active type and passive type according to the dynamic form when selecting, wherein the active type can be a repulsive magnetic field structure, an electric guiding structure, Hydraulic guide structure, pneumatic guide structure, etc., passive structure can be groove structure, lever structure, partition structure, guide wheel structure, etc. The specific choice can be determined according to the actual situation.

In some preferred embodiments of the present invention, the limiting structure is a guide groove 4221 that is distributed alternately with the rope groove 4211, so that the groove-shaped limiting structure is formed on opposite sides of the stressed rope 300 The limit constraint can not only ensure the separation of the winding-in section and the winding-out section, but also limit the distance between each other, so as to realize the controllable limit structure. At the same time, compared with other limit structures, the groove type The limit structure is also more economical to process and manufacture, so as to facilitate the popularization and application of this technology.

In a preferred embodiment of the present invention, the counterweight 700 is located at a fixed position at the bottom of the well, and the projection of the fixed position at the bottom of the well is staggered with the fixed position at the top of the stress rope 300 . Compared with the counterweight 700 without a fixed position, the counterweight 700 with a fixed position can more easily ensure that the stress rope 300 maintains the relative position with the rope groove 4211 and the guide groove 4221 during the ascent and descent of the cage 100 .

In some preferred embodiments of the present invention, the sheave assembly 420 further includes a wheel frame 424, the sheave body 421 is rotatably connected to the wheel frame 424, and the guide part is spaced parallel to the sheave body 421 And rotate the guide wheel 422 connected on the wheel frame; the guide groove 4221 is a coaxial ring groove formed on the outer circumference of the guide wheel 422 . In the present invention, the wheel frame 424 is used as a part connecting the sheave body 421 and the guide wheel 422, so that the sheave body 421 and the guide wheel 422 are integrated, which improves the integrity of the sheave assembly 420, and at the same time, Both the sheave body 421 and the guide sheave 422 are rotatable on the sheave frame 424 , which reduces the frictional force of the stressed rope 300 during the winding movement and improves the service life of the sheave assembly 420 . The force rope 300 is wound on the sheave body 421 to form an upper section 310 extending upward from the bottom of the sheave body 421 to be fixed on the well wall and a lower section 320 extending downward from the top of the sheave body 421 to connect the counterweight 700, The upper section 310 or the lower section 320 passes through the guide groove 4221 so that the upper section 310 and the lower section 320 are staggered on one side of the sheave body 421 . As a preferred embodiment, the upper section 310 of the stressed rope 300 directly enters the rope groove 4211 from top to bottom, and under the action of the weight of the car and the climbing hoist 400, the upper section 310 is in vertical tension State, so that the lower end of the upper section 310 will always be located at the "entrance" of the rope groove 4211, causing the upper section 310 to just fall into the rope groove 4211 as the cage 100 rises, and from the rope groove 4211 as the cage 100 falls The guide part is located in the angled space surrounded by the upper section 310 and the sheave body 421, and there is a certain distance from the upper section 310 and the sheave body 421, so that the guide part can rotate relatively independently, avoiding the stress of the rope 300 The interference effect of the upper section 310 and the sheave body 421 on the guide parts, and the lower section 320 of the force rope 300 goes around the guide groove 4221 and then extends downward, and the counterweight 700 connected to the lower end of the lower section 320 acts on its own weight, Also keep the lower section 320 in a vertically tensioned state, and the upper end of the lower section 320 will not escape from the guide groove 4221, so that the parts where the upper section 310 and the lower section 320 should planarly intersect become staggered in space, avoiding the upper end of the upper section 310 The relative retraction and retraction of the lower section 320 interfere with each other, making the operation of the climbing hoist 400 and the lifting of the cage 100 smoother. As another preferred embodiment, the upper section 310 of the stressed rope 300 goes around the guide groove 4221 from top to bottom and enters the rope groove 4211, and the lower section 320 goes out from the rope groove 4211 from top to bottom without going through the guide groove. 4221 directly extends downwards and connects with the counterweight 700. Correspondingly, under the self-weight action of the car and the climbing hoist 400 and the self-weight of the counterweight 700, the force rope 300 keeps the upper section 310 in the guide groove 4221 and the lower section 320 is located in the state of the rope groove 4211, so that the upper section 310 and the lower section 320 are spatially staggered.

In some preferred embodiments of the present invention, there are more than two rope grooves 4211 and they are distributed at intervals in the axial direction of the sheave body 421, and the guide grooves 4221 are set in one-to-one correspondence with the rope grooves 4211, so that The way of winding the stressed rope 300 on the sheave assembly 420 is a multi-rope multi-groove 360° winding plus pulley type (as shown in FIG. 4 ), a multi-rope multi-groove α type (not shown in the figure) or Multi-rope and multi-groove s-type (as shown in Figure 9). In this way, on each sheave assembly 420, at least two stressed ropes 300 will be wound, so that different stressed ropes 300 wound on the same sheave assembly are mutually "safety ropes", and then the implementation of the present invention can be avoided. The requirements for installing safety ropes on the beamless hoistway construction hoist of the example, thereby further reducing the difficulty of the construction hoistway layout and ascending layer re-arrangement of the beamless hoistway construction hoist of the embodiment of the present invention, and improving work efficiency.

In some preferred embodiments of the present invention, in order to avoid adverse interference effects of the guide member on the sheave body 421 and the stressed rope 300, the guide member is in the first position relative to the sheave body 421 and/or The second position and/or the third position, the first position, the second position and the third position are configured to be the length of the rope away from the sheave body 421 in the winding-in section or the winding-out section. The directions are distributed sequentially, and the winding-in section and the winding-out section are spatially staggered in the second position. When the guide wheel 422 is located above the staggered position, and the guide wheel 422 cooperates with the lower section 320 of the stressed rope 300, the guided wheel 422 is located in the triangular space surrounded by the upper section 310 of the stressed rope 300 and the sheave body 421; As an alternative embodiment, when the guide wheel 422 cooperates with the upper section 310 of the stressed rope 300, the guide wheel 422 is located on the side of the lower section 320 of the stressed rope 300 away from the sheave body 421, and applies tension to the stressed rope 300 force, so that the upper section 310 and the lower section 320 are staggered. When the guide wheel 422 is located below the staggered position, and the guide wheel 422 cooperates with the lower section 320 of the stressed rope 300, the guide wheel 422 is located on the side of the upper section 310 of the stressed rope 300 away from the sheave body 421 and faces toward the Stressed rope 300 exerts tension to facilitate the staggering of upper section 310 and lower section 320; and as an alternative embodiment, when guide wheel 422 cooperates with upper section 310 of stressed rope 300, guide wheel 422 should be located at the lower section of stressed rope 300 320 and the triangular space surrounded by the sheave body 421. When the guide wheel 422 is located at the staggered position, a front groove axially spaced from the guide groove 4221 can be set on the guide wheel 422, and the front groove and the rope groove 4211 are opposite to pass through the separated front groove and the rope groove 4211, guiding and separating the upper section 310 and the lower section 320 of the force-bearing rope 300 respectively, so as to ensure that the upper section 310 and the lower section 320 of the force-bearing rope 300 are staggered in space. Certainly, there may be at least two guide wheels 422, so as to realize the above-mentioned at least two relative positions of the guide wheels 422 and the staggered positions.

In some preferred embodiments of the present invention, the sheave assembly 420 further includes a rope-pressing component 423 configured to block the pull-out direction of the warp-wrapping section of the stressed rope 300 , so as to The inlet of the winding-in section or the outlet of the winding-out section is formed on the sheave body 421, so as to prevent the The warp-wrapping section escapes from the rope groove 4211, so the entrance or the outlet is matched with the rope groove 4211 to form a variable-diameter rope that restricts the warp-wrapping section from winding on the sheave body 421 and coincides with falling into the rope groove 4211. The groove structure (that is, the diameter of the arc at the entrance or the exit is greater than the diameter of the arc of the rope groove) ensures the normal operation of the climbing hoist 400 , that is, ensures the normal lifting operation of the cage 100 . And the concrete form of this rope pressing part 423 can be active type, also can be passive type, as repulsive force magnetic field structure, electric guiding structure, hydraulic guiding structure, pneumatic guiding structure or, driving lever structure, dividing plate structure, guiding structure. Wheel structure, etc., the specific choice can be determined according to the actual situation.

In some preferred embodiments of the present invention, the rope pressing part 423 is located on the side of the rope groove 4211 that is pulled out; at the same time, the sheave assembly 420 also includes a wheel frame 424 and a rope pressing bracket 425, and the sheave body 421 is rotatably connected to the wheel frame 424, the rope pressing bracket 425 is located around the sheave body 421 and is fixedly connected or integrally formed on the wheel frame 424; the rope pressing part 423 is the long edge of the rod The sheave body 421 is a radially extending rod. One end of the rope pressing member 423 is rotatably connected to the rope pressing bracket 425 , and the other end is a free end that is loosely fitted with the sheave body 421 . The rope pressing part 423 ensures the entry and exit of the stressed rope 300 in the rope groove 4211, especially in the case where there is no structure other than the rope groove 4211 on the outer peripheral surface of the sheave body 421, the rope pressing part 423 can be used to facilitate the tension rope The only way for the 300 to enter and exit the rope groove 4211, especially as a preferred embodiment, when there are more than two rope grooves 4211, the rope pressing part 423 should be located on the outer peripheral surface of the sheave body 421 between two adjacent rope grooves 4211 place. As preferably, the pressure rope bracket 425 is a strip plate, and the pressure rope part 423 is connected on the pressure rope bracket 425 by a bearing 426, that is, the bearing 426 is fixed on the pressure rope bracket 425, and the pressure rope bracket 425 425 is provided with a perforation that communicates with the inner hole of the bearing 426 and is larger than the inner hole of the bearing 426. The upper end of the pressure rope part 423 passes through the perforation and is connected with the inner ring of the bearing 426 to be connected to the pressure rope support 425 in rotation. The force rope 300 rotates together to reduce the frictional force of the pressure rope part 423 acting on the force rope 300 , which further facilitates the operation of the climbing hoist 400 and the lifting of the cage 100 .

In some preferred embodiments of this embodiment, the sheave body 421 is formed with an annular fitting groove 4214 that fits with the free end and is parallel to the rope groove 4211 , and the fitting groove 4214 communicates with or is adjacent to the rope groove 4211 . When the matching groove 4214 communicates with the rope groove 4211, it helps the stressed rope 300 to "slide" into the rope groove 4211. On this basis, the pressure rope part 423 in the matching groove 4214 is added to make it easier for the stressed rope 300 in and out of the rope groove 4211; when the matching groove 4214 is adjacent to the rope groove 4211, the matching groove 4214 and the rope groove 4211 are also separated, and the matching groove 4214 is also the positioning effect on the pressing rope part 423, especially in the pressing rope part When 423 is bent by the stressed rope 300, the free end of the rope pressing part 423 is stopped to prevent further bending of the rope pressing part 423 and prolong the service life of the rope pressing part 423.

In some preferred embodiments of this embodiment, the matching groove 4214 communicates with the rope groove 4211, and the groove bottom surface of the matching groove 4214 is a cylindrical surface parallel to the axis of the sheave and/or a conical surface where the small end meets the rope groove 4211 . When the bottom surface of the groove is a cylindrical surface, a shallow groove is formed on one side of the rope groove 4211 to help the stressed rope 300 fall into the rope groove 4211; when the bottom surface of the groove is a conical surface, it helps the stressed rope 300 to "slide" into the rope The effect of the groove 4211; when the bottom surface of the groove is a cylindrical surface and a conical surface, the cylindrical surface should be connected with the big end of the conical surface, so as to be more suitable for the pressure rope part 423 and realize the above-mentioned matching groove 4214 whose bottom surface is a conical surface .

In still some preferred embodiments of this embodiment, the stressed rope 300 has a bent section, one end of the bent section is the first end that falls into the guide groove 4221, and the other end is the first end that falls into the guide groove 4221. The second end in the rope groove 4211, the rope pressing part 423 is located at the second end and/or at a position close to the second end, so that the position of the second end is opposite to the sheave body 421 Paste, and stick to the rope part 423 again, further facilitate the rope part 423 to lead the stressed rope 300 in the rope groove 4211, and facilitate the stressed rope 300 to enter and exit in the rope groove 4211.

In some other embodiments of the present invention, the sheave body 421 is formed with a conical surface 4212 whose small end meets the rope groove 4211 , and the conical surface 4212 and the guide groove 4221 are located on the same side of the rope groove 4211 . The lower section 320 of the stressed rope 300 passes through the rope groove 4211 and the guide groove 4221 sequentially from top to bottom. 4211 is a deflected section in the tangential direction, and the conical surface 4212 will always apply a component force towards the rope groove 4211 to the part where the section is in contact with the sheave body 421. When the cage 100 rises, the component force will Avoid premature escape of the force rope 300 from the rope groove 4211; when the cage 100 descends, the component force will act on the force rope 300 from the initial position where the upper section 310 of the force rope 300 contacts the sheave body 421 , to ensure that the stressed rope 300 can smoothly fall into the rope groove 4211, and avoid that the stressed rope 300 does not fall into the rope groove 4211. As some other embodiments of this embodiment, a buffer groove 4213 parallel to and connected to the rope groove 4211 is formed on the sheave body 421. The bottom surface of the buffer groove 4213 is a cylindrical surface, but the groove depth of the buffer groove 4213 is lower than that of the rope groove. The depth of the groove 4211 makes it easy for the stressed rope 300 to escape from the rope groove 4211 and lead into the rope groove 4211 by utilizing the shallow groove structure formed by the buffer groove 4213 on one side of the rope groove 4211 notch. As a combination of the above-mentioned two embodiments of the buffer structure that helps the stressed rope 300 enter and exit the rope groove 4211, the conical surface 4212 can also be used to replace the cylindrical surface as the bottom surface of the buffer groove 4213, thereby retaining two buffers at the same time. The advantages of the structure make it easier for the stressed rope 300 to enter and exit the rope groove 4211.

In some other embodiments of the present invention, the drive motor 410 is connected with a motor brake 430 for providing braking force to the drive motor 410, and the sheave assembly 420 is connected with a sheave brake 440 for preventing the sheave assembly 420 from rotating, The motor brake 430 and the sheave brake 440 are configured to operate synchronously. When the cage 100 arrives at the landing, the motor brake 430 and the sheave brake 440 control the synchronous locking and unlocking of the sheave assembly 420 and the drive motor 410 in a synchronous start-stop manner, that is, both the sheave assembly 420 and the drive motor 410 When unlocked, the cage 100 can be lifted and lowered along the guide rail 200 under the action of the climbing hoist 400; when the sheave assembly 420 and the drive motor 410 are locked, the cage 100 will be braked at the corresponding position of the landing, Of course, when the motor brake 430 and the sheave brake 440 are braked and when they are released, the control timing and the control mode are the same as those in the prior art when the station is stopped. No longer. The motor brake 430 and the sheave brake 440 can choose the same type of brake, or different types of brakes. Preferably, the sheave brake 440 is a hoop brake, and the specific hoop brake type, specification and model, such as Electromagnetic type, hydraulic type, etc., are configured according to actual working conditions, and will not be described here. The transmission mode between the drive motor 410 and the sheave assembly 420 can be direct transmission, such as key connection transmission, flange connection transmission, shaft coupling connection transmission, etc.; it can also be indirect transmission, such as transmission through a reducer, through Transmission, transmission, etc., the specific transmission mode is also configured according to actual needs.

In some other embodiments of the present invention, in order to further improve the lifting safety of the cage 100, the double-brake hoistway climbing elevator also includes a fall prevention mechanism, and the fall prevention mechanism includes a safety gear 810 and a speed limiter 820. The safety gear 810 is installed on the cage 100 and cooperates with the guide rail 200. The speed governor 820 is connected to the safety gear 810 through a power transmission rope and is configured to be fixed on the hoistway wall no lower than the rope. Fixture 500 position.

In some other embodiments of the present invention, in order to avoid accidental fall when the stressed rope 300 breaks, the double-braking hoistway climbing elevator also includes a broken rope power-off mechanism, and the broken rope power-off mechanism includes The sensing assembly 600 matched with the lower section 320 of the stressed rope 300 is connected to the climbing hoist 400 for control, and is configured to control the climbing hoist 400 in response to the triggering of the sensing assembly 600 . The hoist 400 brakes the cage 100 . Therefore, when a broken rope occurs, the cooperation state between the sensing component 600 and the stressed rope 300 will change, and the change signal is used as the trigger condition of the sensing component 600, thereby realizing emergency braking of the climbing hoist 400 , just realize the emergency braking to hanging cage 100.

In some other embodiments of the present invention, in order to further improve the stability and reliability of the driving mechanism, the climbing hoist 400 and the force rope 300 adapted to it form a set of climbing components, and the climbing components have At least two groups, preferably, there are two groups, three groups or four groups of climbing components. Taking two groups of climbing components as an example, the two groups of climbing components are respectively located on the opposite sides of the cage 100, and are staggered in two groups of oppositely arranged Both sides of the guide rail 200 assembly. Therefore, multiple sets of climbing components are used to share the force when the cage 100 is lifted and lowered, reducing the loss of the stress rope 300 .

In summary, the non-floor-beam hoistway construction elevator of the present invention has the following characteristics:

1. When the bottom surface of the buffer groove 4213 or the matching groove 4214 is a cylindrical surface, the stressed rope 300 is divided into the rope groove 4211 area and the guide groove 4221 area in the 360° winding. The component 423 guides the stressed rope 300 from the sheave body 421 and the guide wheel 422 into and out of the stressed rope 300, so that the crossing of the stressed rope 300 during 360° winding does not cause friction between the outgoing rope and the incoming rope.

2. When the bottom surface of the buffer groove 4213 or the matching groove 4214 is a conical surface, when the force rope 300 is introduced into the force, the pressure rope part 423 may not be used, and the force rope 300 slides into the rope groove 4211 by the inclined plane; of course, It is also possible to add a rope-pressing part 423 so that the inclined plane and the rope-pressing part 423 work together.

3. There can be at least two arrangements of the guide wheels, one is to arrange one above and one below the staggered position, and the other is to arrange the guide wheels 422 only above or below the staggered position.

4. There is no sky beam, and the top bracket of the force rope 300 is fixed;

5. The force rope 300 does not run up and down, and the friction force generated by the winding mechanism and the force rope 300 (360-degree multi-rope and multi-groove or multi-rope and multi-groove S-type winding) drives the construction elevator car to move up and down;

6. Each stressed rope 300 at the lower part of the hoistway is arranged with a weight of the same weight, so that the tension of multiple stressed ropes 300 is the same;

7. The lower part of the stressed rope 300 is equipped with a broken rope and power-off protection device;

8. When the hoistway construction hoist is not installed on the top floor, the redundant stress rope 300 is placed at the bottom of the hoistway or other positions on the bottom floor;

9. When the stress rope 300 is in the state of stress due to the weight, the trip switch is powered off to stop the construction hoist.

So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. A rope sheave assembly, characterized in that, comprising: The sheave body, the sheave body is formed with an annular and coaxial rope groove; A guide part, a limit structure is formed on the guide part, and the limit structure is configured to pull out the winding-in section or the winding-out section of the stressed rope from the tangential direction of the rope groove, so that the winding The incoming segment and the outgoing segment are spatially interleaved. 2. The sheave assembly according to claim 1, characterized in that, The limiting structure is a guide groove distributed alternately with the rope groove. 3. The sheave assembly according to claim 2, wherein the sheave assembly further comprises: a wheel frame, the sheave body is rotatably connected to the wheel frame, and the guide component is a guide wheel spaced parallel to the sheave body and rotatably connected to the wheel frame; and The guide groove is a coaxial ring groove formed on the outer circumference of the guide wheel. 4. The sheave assembly according to claim 2, wherein: There are more than two rope grooves distributed at intervals in the axial direction of the sheave body; and The guide grooves are set in one-to-one correspondence with the rope grooves. 5. The sheave assembly according to claim 1, characterized in that, The guide member is in a first position and/or a second position and/or a third position relative to the sheave body, the first position, the second position and the third position are configured to be in the The winding-in section or the winding-out section is distributed sequentially along the rope length direction away from the sheave body, and at the second position, the winding-in section and the winding-out section are spatially interlaced. 6. The sheave assembly according to claim 1, wherein the sheave assembly further comprises: A rope-pressing part, the rope-pressing part is configured to block in the pulling-out direction of the winding-in section of the force-bearing rope, so as to form the entrance of the winding-in section on the sheave body or the Detour out of the segment's exit. 7. The sheave assembly according to claim 6, wherein: The rope pressing part is located on the pulled-out side of the rope groove; and The sheave assembly also includes: a wheel frame, the sheave body is rotatably connected to the wheel frame; A rope-pressing bracket, the rope-pressing bracket is located around the sheave body and is fixedly connected or integrally formed on the wheel frame; and The rope-pressing part is a rod whose length extends radially along the sheave body, one end of the rope-pressing part is rotatably connected to the rope-pressing bracket, and the other end is in clearance fit with the sheave body. free end. 8. The sheave assembly according to claim 7, wherein: The sheave body is also formed with an annular matching groove that matches the free end and is parallel to the rope groove. The matching groove communicates with or is adjacent to the rope groove. The bottom surface of the matching groove is A cylindrical surface parallel to the axis of the sheave and/or a conical surface where the small end connects with the rope groove. 9. The sheave assembly of claim 1, wherein: A buffer groove communicating with the rope groove and/or a conical surface with a small end connected to the rope groove is also formed on the sheave body, and the buffer groove and/or the conical surface are configured to block In the pulling-out direction of the winding section of the stressed rope, the entrance of the winding-in section or the exit of the winding-out section is formed on the sheave body. 10. A beamless hoistway construction hoist, characterized in that it comprises: Stress rope, the upper end of the stress rope is configured to be fixed on the hoistway wall, and the lower end is connected with a counterweight; A pressure-rope elevator, the climbing elevator comprises the rope sheave assembly according to any one of claims 1-9.

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