A traction wheel structure for an elevator traction machine

Abstract

This application relates to the technical field of traction machines, and discloses a traction wheel structure for an elevator traction machine, including a traction wheel. A groove is provided in the wheel groove of the traction wheel, and a clamping block component is clamped on the groove. The clamping block component includes a U-shaped block clamped in the groove. A connecting rod is provided inside the top end of the U-shaped block, and a top bead is fixedly installed in the middle of the outer surface of the connecting rod. A set of positioning plates are respectively provided on both sides of the U-shaped block, and a set of end covers are fixedly installed at both ends of the upper wheel groove of the traction wheel, and a clamping plate is provided on the inner end surface of the end cover. For the clamping block component and its structure provided in this application, when the two sides of the top end of the U-shaped block are deformed inward, the outer surface of the top bead can be clamped in the spiral gap of the steel wire rope, so as to effectively improve the friction between the upper wheel groove of the traction wheel and the steel wire rope, making it not easy for the elevator to slip during operation.

Description

Technical Field

[0001] This application relates to the technical field of traction machines, and particularly to a traction wheel structure for an elevator traction machine. Background Art

[0002] An elevator traction machine is the power equipment of an elevator, which is used to transmit power so that the elevator can operate normally. One end of a steel wire rope is connected to a car through a traction wheel, and the other end is connected to a counterweight device. Under the action of gravity, a frictional force is generated between the steel wire rope and the traction wheel groove. Then, when starting the traction machine, it can force the car and the counterweight device to move relatively (that is, the car rises and the counterweight descends; the counterweight rises and the car descends) to perform the vertical transportation task of the elevator car.

[0003] However, since the up and down movement of the elevator car depends on the frictional force between the steel wire rope and the traction wheel groove, during the long-term operation of the elevator, as the traction wheel groove and the steel wire rope are worn or their surfaces are seriously soiled, the frictional force between the steel wire rope and the traction wheel groove will be reduced, which will cause slipping and lead to the sudden stop or out-of-control of the elevator, posing a great potential safety hazard.

[0004] Therefore, there is an urgent need for a traction wheel structure in an elevator traction machine to solve the defects existing in the actual use of the existing elevator traction machine. Summary of the Invention

[0005] This application provides a traction wheel structure for an elevator traction machine, which has the advantages of effectively improving the frictional force between the steel wire rope and the traction wheel groove, making it not easy to slip during operation, and having high safety and reliability. It is used to solve the problem that since the up and down movement of the elevator car depends on the frictional force between the steel wire rope and the traction wheel groove, during the long-term operation of the elevator, as the traction wheel groove and the steel wire rope are worn or their surfaces are seriously soiled, the frictional force between the steel wire rope and the traction wheel groove will be reduced, which will cause slipping and lead to the sudden stop or out-of-control of the elevator, posing a great potential safety hazard.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a traction wheel structure for an elevator traction machine, comprising a traction wheel fixedly mounted on the output shaft of the traction machine, and a plurality of grooves arranged in a ring array are opened on the wheel groove of the traction wheel, and a clamping block component made of elastic material is clamped on the groove, and then when the steel wire rope above the traction wheel groove is subjected to force, the top ends of both sides of the clamping block component can be forced to deform inwardly to form an extrusion on the surface of the steel wire rope, and the clamping block component comprises a U-shaped block clamped in the groove, a connecting rod is provided inside the top end of the U-shaped block, and a steel top ball is fixedly installed in the middle of the outer surface of the connecting rod, and then when the two sides of the top end of the U-shaped block are deformed inwardly, the outer surface of the top ball can be clamped in the spiral gap of the steel wire rope to form an extrusion on the surface of the steel wire rope. The friction between the traction wheel and the wire rope is effectively improved, so that the elevator is not prone to slipping during operation. Because the wire rope is composed of several groups of steel wires twisted together in a spiral according to certain rules, there is a gap arranged in a rotating structure on the outer surface of the wire rope. A group of positioning plates are respectively provided on both sides of the left and right end faces of the U-shaped block, and then a group of card slot structures are formed on the end face of the U-shaped block, and a group of end covers are respectively fixedly installed on the left and right ends of the wheel groove on the traction wheel by bolts, and a group of card plates arranged in a ring array and corresponding to the card slots on the U-shaped block are provided on the inner end face of the end cover, and then the U-shaped block is fixed in the groove on the traction wheel through the card plate on the end cover, so that the traction wheel and the structure thereon are not prone to shaking during operation.

[0007] Furthermore, the connecting rod is configured as a screw structure, and both ends of the connecting rod are transmission-connected with the internal threads of the U-shaped block, so that when the top ball is staggered with the spiral gap on the wire rope, the top ball can be forced to rotate left and right to get stuck in the spiral gap on the wire rope during the process of the U-shaped block deforming and squeezing the top ball.

[0008] Furthermore, both ends of the connecting rod are arranged as inclined structures and are in contact with the end surface of the limiting rod slidably connected to the U-shaped block. At the same time, an elastic member is movably sleeved on one side of the outer surface of the limiting rod to form an elastic connection with the U-shaped block. When the top ball is not subjected to force, the connecting rod and the top ball thereon are forced to rotate in the opposite direction under the action of the inclined structure and the elastic force of the elastic member, so that the top ball returns to its initial position.

[0009] Furthermore, the bottom of the inner cavity of the U-shaped block is set to an arc structure with the same arc as the wheel groove on the traction wheel, ensuring that after the U-shaped block is squeezed and moved downward, it can cooperate with the traction wheel to form a complete wheel groove structure, thereby effectively reducing the scratches caused to the wire rope.

[0010] Further, the end cover is provided with a circular structure at the outer side end of the traction wheel and a semi-circular structure at the inner side end of the traction wheel, thereby facilitating the installation and disassembly of the end cover to replace the damaged latch components.

[0011] Further, a vent hole communicating with its interior is provided at the side end of the U-shaped block to balance the air pressure on both the inner and outer sides when the limit rod moves left and right. Furthermore, the flexibility of the top bead during movement is relatively high to ensure that it can stably engage in the spiral gap on the steel wire rope.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. For the structure of the latch components and their upper structures in the traction wheel structure for an elevator traction machine provided in this application, when the two sides at the top of the U-shaped block deform inward, the outer surface of the top bead can be clamped in the spiral gap of the steel wire rope, effectively increasing the friction between the wheel groove on the traction wheel and the steel wire rope, making it difficult for the elevator to slip during operation, and having high safety and reliability.

[0014] 2. For the structure of the limit rod and its upper structures in the traction wheel structure for an elevator traction machine provided in this application, when the top bead is not stressed, under the action of the inclined surface structure and the elastic force of the elastic member, the connecting rod and the top bead thereon can be forced to rotate and move in the reverse direction, causing the top bead to return to its initial position. Furthermore, during the continuous rotation operation of the traction wheel and its latch components, the normal operation state of the top bead thereon can always be ensured, further improving the stability and reliability of the elevator during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative efforts:

[0016] Figure 1 It is a schematic structural diagram of the present invention;

[0017] Figure 2 It is a front view of the structure of the present invention;

[0018] Figure 3 It is a schematic structural diagram of the traction wheel of the present invention;

[0019] Figure 4 It is a schematic structural diagram of the latch component of the present invention;

[0020] Figure 5 It is a schematic structural diagram of the end cover of the present invention.

[0021] In the figure: 1 - traction sheave, 2 - groove, 3 - block component, 4 - U-shaped block, 5 - connecting rod, 6 - top bead, 7 - limiting rod, 8 - elastic member, 9 - positioning plate, 10 - end cover, 11 - clamping plate; 12 - ventilation hole. Specific implementation manner

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] As Figures 1-3 shown, a traction sheave structure for an elevator traction machine includes a traction sheave 1 fixedly installed on the output shaft of the traction machine, and a number of groups of grooves 2 arranged in an annular array are formed on the groove of the traction sheave 1. A block component 3 made of an elastic material is clamped on the groove 2. When the steel wire rope above the groove of the traction sheave 1 is stressed, the tops on both sides of the block component 3 can be forced to deform inward to form an extrusion on the surface of the steel wire rope. As Figure 4 shown, the block component 3 includes a U-shaped block 4 clamped in the groove 2. A connecting rod 5 is provided inside the top of the U-shaped block 4, and a steel top bead 6 is fixedly installed in the middle of the outer surface of the connecting rod 5. When the two sides of the top of the U-shaped block 4 deform inward, the outer surface of the top bead 6 can be clamped in the spiral gap of the steel wire rope, so as to effectively increase the friction between the traction sheave 1 and the steel wire rope, making the elevator not prone to slipping during operation. Since the steel wire rope is made by twisting a number of groups of steel wires together according to a certain rule, there are gaps arranged in a rotating structure on the outer surface of the steel wire rope. A group of positioning plates 9 are respectively provided on both sides of the left and right end faces of the U-shaped block 4. Thus, a clamping groove structure is formed on the end face of the U-shaped block 4, and a group of end covers 10 are respectively fixedly installed at the left and right ends of the upper groove of the traction sheave 1 through bolts. As Figure 5 shown, a number of groups of clamping plates 11 arranged in an annular array and corresponding to the clamping grooves on the U-shaped block 4 are provided on the inner end face of the end cover 10. Thus, the U-shaped block 4 is fixed in the groove 2 on the traction sheave 1 through the clamping plates 11 on the end cover 10, and the traction sheave 1 and its structure are not prone to shaking during operation.

[0024] As Figure 4As shown, in the present technical solution, the connecting rod 5 is configured as a screw structure, and the two ends of the connecting rod 5 are transmission connected with the internal threads of the U-shaped block 4, so that when the top ball 6 is staggered with the spiral gap on the wire rope, in the process of the U-shaped block 4 being deformed and squeezing the top ball 6, the top ball 6 can be forced to rotate left and right to get stuck in the spiral gap on the wire rope.

[0025] like Figure 4 As shown, in the present technical solution, both ends of the connecting rod 5 are set as inclined structures, and are in contact with the end surface of the limiting rod 7 slidably connected to the U-shaped block 4. At the same time, an elastic member 8 is movably sleeved on one side of the outer surface of the limiting rod 7 to form an elastic connection with the U-shaped block 4. Then, when the top ball 6 is not subjected to force, the connecting rod 5 and the top ball 6 thereon are forced to rotate in the opposite direction under the action of the inclined structure and the elastic force of the elastic member 8, so that the top ball 6 returns to the initial position.

[0026] like Figure 2 , Figure 4 As shown, in the present technical solution, the bottom of the inner cavity of the U-shaped block 4 is set to an arc structure with the same arc as the wheel groove on the traction wheel 1, ensuring that after the U-shaped block 4 is squeezed and moved downward, it can cooperate with the traction wheel 1 to form a complete wheel groove structure, thereby effectively reducing the scratches caused to the wire rope.

[0027] like Figure 1 , Figure 5 As shown, in the present technical solution, the end cover 10 is set as a full-circular structure at the outer end of the traction wheel 1, and is set as a semicircular structure at the inner end of the traction wheel 1, thereby facilitating the installation and disassembly of the end cover 10 to replace the damaged block component 3.

[0028] like Figure 4 As shown, in the present technical solution, a vent hole 12 connected to the interior of the U-shaped block 4 is provided at the side end thereof to balance the air pressure inside and outside the limit rod 7 when the limit rod 7 moves left and right, thereby making the top ball 6 more flexible when moving to ensure that it can be stably stuck in the spiral gap on the wire rope.

[0029] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A traction sheave structure for an elevator traction machine, comprising a traction sheave (1), and a groove (2) is provided on the wheel groove of the traction sheave (1), characterized in that: A block component (3) is clamped on the groove (2), and the block component (3) includes a U-shaped block (4) clamped in the groove (2). A connecting rod (5) is provided inside the top end of the U-shaped block (4), and a top bead (6) is fixedly installed in the middle of the outer surface of the connecting rod (5), so that when both sides of the top end of the U-shaped block (4) are deformed inward, the outer surface of the top bead (6) is clamped in the spiral gap of the wire rope. A group of positioning plates (9) are respectively provided on both sides of the left and right end surfaces of the U-shaped block (4), so that a group of clamping groove structures are formed on the end surface of the U-shaped block (4), and a group of end covers (10) are respectively fixedly installed on the left and right ends of the wheel groove on the traction wheel (1) by bolts, and a clamping plate (11) corresponding to the clamping groove on the U-shaped block (4) is provided on the inner end surface of the end cover (10).

2. The traction sheave structure for an elevator traction machine according to claim 1, characterized in that: The connecting rod (5) is configured as a screw structure, and both ends of the connecting rod (5) are connected to the internal threads of the U-shaped block (4) in a transmission manner, so that when the top ball (6) is staggered from the spiral gap on the steel wire rope, the top ball (6) is forced to rotate left and right to get stuck in the spiral gap on the steel wire rope during the process of the U-shaped block (4) deforming and squeezing the top ball (6).

3. The traction sheave structure for an elevator traction machine according to claim 2, characterized in that: Both ends of the connecting rod (5) are provided with inclined surface structures and are in contact with the end surface of a limit rod (7) slidably connected to the U-shaped block (4). At the same time, an elastic member (8) is movably sleeved on one side of the outer surface of the limit rod (7) to form an elastic connection with the U-shaped block (4).

4. The traction sheave structure for an elevator traction machine according to claim 3, characterized in that: The bottom of the inner cavity of the U-shaped block (4) is configured to have an arc-shaped structure with the same arc as the wheel groove on the traction wheel (1), ensuring that after the U-shaped block (4) is squeezed and moves downward, it cooperates with the traction wheel (1) to form a complete wheel groove structure.

5. The traction sheave structure for an elevator traction machine according to claim 4, characterized in that: The end cover (10) is configured as a full-circular structure at the outer end of the traction wheel (1), and is configured as a semi-circular structure at the inner end of the traction wheel (1).

6. The traction sheave structure for an elevator traction machine according to claim 5, characterized in that: The side end of the U-shaped block (4) is provided with a vent hole (12) connected to the interior thereof, so as to balance the air pressure inside and outside the limiting rod (7) when the limiting rod (7) moves left and right.

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