High-reliability elevator sheave and method of assembling same

Abstract

The application discloses a high-reliability elevator rope wheel, which comprises a rope wheel body and a bearing, the bearing is arranged in the rope wheel body, the rope wheel body comprises a bottom plate and a cover plate, a plurality of square rivet holes are arranged on the bottom plate in a circumferential direction along a center hole, an arc-shaped sliding groove is arranged on one side of the square rivet hole, protrusions are arranged on both sides of the arc-shaped sliding groove, a first guide inclined surface is arranged on the protrusion, one end of the first guide inclined surface extends to the surface of the bottom plate, a locking block is arranged on one side of the circular rivet hole, the shape of the locking block is matched with the shape of the square rivet hole, a second guide inclined surface matched with the first guide inclined surface is arranged on the back of the locking block, and the locking block is connected with the cover plate through an arc-shaped connecting plate. The application further discloses an assembling method of the high-reliability elevator rope wheel. Compared with the prior art, the double locking between the bottom plate and the cover plate is realized, the separation of the bottom plate and the cover plate is avoided, the bottom plate is fully positioned and protected during assembly, and deformation is avoided.

Description

Technical Field

[0001] This invention relates to the field of elevator sheave technology, and in particular to a high-reliability elevator sheave and its assembly method. Background Technology

[0002] The function of the sheave in an elevator is to ensure the position and trajectory of the wire rope. Elevator sheaves are mainly composed of a base plate and a cover plate riveted together, and are widely used in elevators. For example, Chinese patent CN110271934A discloses a sheave mechanism including a sheave body and a centrifugal swing block. The centrifugal swing block is located on the sheave body, which has a through hole and a swing block support. A counterweight is placed between the through hole and the centrifugal swing block support. The centrifugal swing block includes a cylinder and a swing block connecting plate, and the centrifugal swing block is rotatably connected to the swing block support through the connecting plate. The cylinder passes through the through hole and is adapted to the counterweight. One curved surface of the counterweight contacts the edge surface of the cylinder. The swing block support has a fan-shaped arc surface, and the other curved surface of the counterweight is adapted to the fan-shaped arc surface.

[0003] The elevator rope pulley, which is made by riveting the base plate and cover plate together, is prone to separation after long-term use, posing a safety hazard. Summary of the Invention

[0004] The purpose of this invention is to provide a highly reliable elevator pulley and its assembly method, which achieves double locking between the base plate and the cover plate to prevent separation of the base plate and the cover plate, and ensures that the base plate is fully positioned and protected during assembly to prevent deformation.

[0005] To achieve the above objectives, the present invention provides a high-reliability elevator pulley, comprising: a pulley body and a bearing, the bearing being disposed within the pulley body. The pulley body includes a base plate and a cover plate. The base plate has a plurality of square rivet holes arranged circumferentially along a central hole. The square rivet holes are used to install rivets. An arc-shaped groove is provided on one side of each square rivet hole. Protrusions are provided on both sides of the arc-shaped groove. A first guide slope is provided on each protrusion. One end of the first guide slope extends to the surface of the base plate. The cover plate has a circular rivet hole corresponding to the position of the square rivet hole. A locking block is provided on one side of each circular rivet hole. The shape of the locking block matches the shape of the square rivet hole. A second guide slope matching the first guide slope is provided on the back of the locking block. The locking block is connected to the cover plate via an arc-shaped connecting plate, which is slidably connected within the arc-shaped groove.

[0006] As a further description of the above technical solution:

[0007] The base plate has four square rivet holes arranged circumferentially around the central hole.

[0008] On the other hand, the present invention also provides an assembly method for a high-reliability elevator pulley based on the above-mentioned method, comprising the following steps:

[0009] S1. Place the base plate in the positioning groove of the contour positioning block, with the edge of the base plate against the inner wall of the positioning groove, and install the bearing into the base plate.

[0010] S2. Align the locking block on the cover plate with the square rivet hole on the base plate, then put the cover plate and the base plate together and insert the locking block into the square rivet hole.

[0011] S3. Rotate the cover plate so that the arc-shaped connecting plate slides in the arc-shaped groove on the base plate. At the same time, the first guide slope on the protrusion cooperates with the second guide slope on the back of the locking block to pull the cover plate tight to the base plate and make the cover plate fit against the base plate.

[0012] S4. The arc-shaped connecting plate slides to the end of the arc-shaped groove, and the round rivet holes on the cover plate are aligned with the square rivet holes.

[0013] S5. Insert the rivet into the square rivet hole from the clearance hole on the back of the contour positioning block. The clearance hole position corresponds to the square rivet hole. After the end of the rivet passes through the round rivet hole, it is riveted and fixed by the rivet gun. The cover plate is riveted and fixed to the base plate.

[0014] S6. Remove the rope pulley from the contour positioning block to complete the assembly of the rope pulley.

[0015] As a further description of the above technical solution:

[0016] The bottom surface of the positioning groove is provided with a protrusion.

[0017] As a further description of the above technical solution:

[0018] The depth of the positioning groove is greater than or equal to the thickness of the base plate.

[0019] As a further description of the above technical solution:

[0020] A rope groove is provided on the side end face of the base plate, and a contour support block is provided in the rope groove. The contour support block is ring-shaped and includes two contour support block units arranged symmetrically facing each other.

[0021] As a further description of the above technical solution:

[0022] The end of the contour support block unit is provided with a connecting hole, and the inner wall of the connecting hole is provided with an internal threaded hole section. One contour support block unit is connected to another contour support block unit through a threaded connector, and the threaded connector is threaded into the internal threaded hole section.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0024] 1. In this invention, before fixing the bottom plate and cover plate of the rope wheel body with rivets, the bottom plate and cover plate are rotated and locked by the cooperation of locking blocks and protrusions, and the rivets abut against the locking blocks to prevent the locking blocks from rotating back to their original position, so that the bottom plate and cover plate are double locked to prevent the bottom plate and cover plate from separating.

[0025] 2. In this invention, when assembling the rope wheel, the contour positioning block is used to position and support the base plate, with the edge of the base plate abutting against the inner wall of the positioning groove. Thus, after the locking block on the cover plate is inserted into the square rivet hole, rotating the cover plate and locking it to the base plate effectively ensures assembly quality by preventing the cover plate edge from bending improperly and avoiding pressure on the base plate edge during locking, which could lead to rope groove deformation. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a high-reliability elevator pulley.

[0028] Figure 2 This is a schematic diagram of the structure of the bottom plate of a high-reliability elevator sheave.

[0029] Figure 3 This is a schematic diagram of the structure of a cover plate in a high-reliability elevator sheave.

[0030] Figure 4 This is a side view diagram showing the separation of the bottom plate and cover plate in a high-reliability elevator sheave.

[0031] Figure 5 A schematic diagram of the installation of the bottom plate and cover plate of a high-reliability elevator sheave. Figure 1 .

[0032] Figure 6 A schematic diagram of the installation of the bottom plate and cover plate of a high-reliability elevator sheave. Figure 2 .

[0033] Figure 7 This is a schematic diagram of the assembly of a high-reliability elevator sheave based on the above-mentioned assembly method.

[0034] Figure 8 This is a schematic diagram of the contour positioning block in an assembly method for a high-reliability elevator sheave as described above.

[0035] Figure 9 This is a schematic diagram of the contour support block in an assembly method for a high-reliability elevator sheave as described above.

[0036] Legend:

[0037] 1. Bearing; 2. Base plate; 21. Square rivet hole; 22. Arc-shaped groove; 23. Protrusion; 231. First guide slope; 24. Rope groove; 3. Cover plate; 31. Circular rivet hole; 32. Locking block; 321. Second guide slope; 33. Arc-shaped connecting plate; 4. Rivet; 5. Contouring positioning block; 51. Positioning groove; 511. Protrusion; 52. Clearance hole; 6. Contouring support block; 61. Contouring support block unit; 611. Connecting hole; 612. Internal threaded hole section. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0040] Please see Figure 1-9 The present invention provides a technical solution: On one hand, the present invention provides a high-reliability elevator pulley, comprising: a pulley body and a bearing 1, the bearing 1 being disposed within the pulley body; the pulley body comprising a base plate 2 and a cover plate 3; the base plate 2 having a plurality of square rivet holes 21 arranged circumferentially along a central hole, the square rivet holes 21 being used to install rivets 4; an arc-shaped groove 22 being provided on one side of the square rivet holes 21; protrusions 23 being provided on both sides of the arc-shaped groove 22; and a first guide oblique angle being provided on the protrusions 23. Surface 231, one end of the first guide slope 231 extends to the surface of the base plate 2, and the cover plate 3 is provided with a circular rivet hole 31 corresponding to the square rivet hole 21. A locking block 32 is provided on one side of the circular rivet hole 31. The shape of the locking block 32 matches the shape of the square rivet hole 21. A second guide slope 321 matching the first guide slope 231 is provided on the back of the locking block 32. The locking block 32 is connected to the cover plate 3 through an arc-shaped connecting plate 33. The arc-shaped connecting plate 33 is slidably connected in the arc-shaped groove 22.

[0041] Before the base plate 2 and cover plate 3 of the rope wheel body are fixed by the rivet 4, the base plate 2 and cover plate 3 are rotated and locked by the cooperation of the locking block 32 and the protrusion 23. The rivet 4 abuts against the locking block 32 to prevent the locking block 32 from rotating back to its original position, so that the base plate 2 and cover plate 3 are double locked to prevent the base plate 2 and cover plate 3 from separating.

[0042] The base plate 2 is provided with four square rivet holes 21 arranged around the center hole, which effectively ensures the locking effect of the base plate 2 and the cover plate 3 and prevents the base plate 2 and the cover plate 3 from separating.

[0043] On the other hand, the present invention also provides an assembly method for a high-reliability elevator pulley based on the above-mentioned method, comprising the following steps:

[0044] S1. Place the base plate 2 in the positioning groove 51 of the contour positioning block 5, with the edge of the base plate 2 abutting against the inner side wall of the positioning groove 51, and install the bearing 1 onto the base plate 2.

[0045] S2. Align the locking block 32 on the cover plate 3 with the square rivet hole 21 on the base plate 2, then put the cover plate 3 and the base plate 2 together, and insert the locking block 32 into the square rivet hole 21.

[0046] S3. Rotate the cover plate 3 so that the arc-shaped connecting plate 33 slides in the arc-shaped groove 22 on the base plate 2. At the same time, the first guide slope 231 on the protrusion 23 cooperates with the second guide slope 321 on the back of the locking block 32 to pull the cover plate 3 towards the base plate 2, and the cover plate 3 fits against the base plate 2.

[0047] S4. The arc-shaped connecting plate 33 slides to the end of the arc-shaped groove 22, and the circular rivet hole 31 on the cover plate 3 is aligned with the square rivet hole 21. The square rivet hole 21 is square, and the side length of the square rivet hole 21 is equal to the diameter of the circular rivet hole 31.

[0048] S5. Insert the rivet 4 into the square rivet hole 21 through the clearance hole 52 on the back of the contour positioning block 5. The clearance hole 52 corresponds to the square rivet hole 21. After the end of the rivet 4 passes through the circular rivet hole 31, it is riveted and fixed by a rivet gun. The cover plate 3 is riveted and fixed to the base plate 2. The head of the rivet 4 contacts the side of the locking block 32 to prevent the locking block 32 from rotating and moving backward with the cover plate 3. For details, please refer to the appendix. Figure 5-6 ;

[0049] S6. Remove the rope wheel from the contour positioning block 5 to complete the assembly of the rope wheel.

[0050] When assembling the rope pulley, the contour positioning block 5 is used to position and support the base plate 2, with the edge of the base plate 2 abutting against the inner wall of the positioning groove 51. Thus, after the locking block 32 on the cover plate 3 is inserted into the square rivet hole 21, the cover plate 3 is rotated to lock it with the base plate 2. To prevent the edge of the cover plate 3 from bending improperly (i.e., before the cover plate 3 is rotated and locked, the center part of the cover plate 3 is not in contact with the base plate 2), and to prevent the edge of the cover plate 3 from being squeezed during the locking process, causing deformation of the rope groove 24, the assembly quality is effectively guaranteed.

[0051] The bottom surface of the positioning groove 51 is provided with a protrusion 511, which effectively supports the base plate 2 and prevents the base plate 2 from deforming under stress during assembly.

[0052] The depth of the positioning groove 51 is greater than or equal to the thickness of the base plate 2, which effectively protects the rope groove 24 at the end of the base plate 2 and prevents the rope groove from deforming.

[0053] A rope groove 24 is provided on the side end face of the base plate 2, and a contoured support block 6 is provided in the rope groove 24. The contoured support block 6 is annular and includes two symmetrically arranged contoured support block units 61 facing each other. In step S1, before placing the base plate 2 into the positioning groove 51 of the contoured positioning block 5, the two contoured support block units 61 are first placed into the rope groove 24 of the base plate 2. Then, when the base plate 2 is placed into the positioning groove 51, the outer peripheral surface of the contoured positioning block 5 abuts against the inner sidewall of the positioning groove 51, and the inner peripheral surface of the contoured positioning block 5 fits the rope groove 24, effectively positioning and supporting the base plate 2, preventing the base plate 2 from deforming during the rope wheel assembly process, and ensuring the quality of the rope wheel.

[0054] The contour support block 6 and the contour positioning block 5 work together to position and support the rope groove 24 from both the inner and outer sides, effectively preventing the rope groove 24 from deforming during assembly.

[0055] The end of the contour support block unit 61 is provided with a connecting hole 611, and the inner wall of the connecting hole 611 is provided with an internally threaded section 612. One contour support block unit 61 is connected to another contour support block unit 61 through a threaded connector, which is threaded into the internally threaded section 612. The two contour support block units 61 can be locked together by the threaded connector to form a contour support block 6. The contour support block 6 can independently position the base plate 2 without cooperating with the contour positioning block 5, and can also form the shape of the rope groove 24, further improving the quality of the rope pulley.

[0056] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for assembling a high-reliability elevator pulley, characterized in that, The high-reliability elevator pulley includes a pulley body and a bearing (1). The bearing (1) is disposed in the pulley body. The pulley body includes a base plate (2) and a cover plate (3). The base plate (2) is provided with a plurality of square rivet holes (21) arranged circumferentially along the central hole. The square rivet holes (21) are used to install rivets (4). An arc-shaped groove (22) is provided on one side of the square rivet holes (21). Protrusions (23) are provided on both sides of the arc-shaped groove (22). A first guide slope (231) is provided on the protrusions (23). One end of the first guide slope (231) is... Extending to the surface of the base plate (2), the cover plate (3) is provided with a circular rivet hole (31) corresponding to the square rivet hole (21). A locking block (32) is provided on one side of the circular rivet hole (31). The shape of the locking block (32) matches the shape of the square rivet hole (21). A second guide slope (321) matching the first guide slope (231) is provided on the back of the locking block (32). The locking block (32) is connected to the cover plate (3) through an arc-shaped connecting plate (33). The arc-shaped connecting plate (33) is slidably connected in the arc-shaped groove (22). The assembly method of the high-reliability elevator pulley includes the following steps: S1. Place the base plate (2) in the positioning groove (51) of the contour positioning block (5), with the edge of the base plate (2) abutting against the inner wall of the positioning groove (51), and install the bearing (1) into the base plate (2). S2. Align the locking block (32) on the cover plate (3) with the square rivet hole (21) on the bottom plate (2), and then put the cover plate (3) and the bottom plate (2) together, and insert the locking block (32) into the square rivet hole (21). S3. Rotate the cover plate (3) so that the arc-shaped connecting plate (33) slides in the arc-shaped groove (22) on the base plate (2). At the same time, the first guide slope (231) on the protrusion (23) cooperates with the second guide slope (321) on the back of the locking block (32) to pull the cover plate (3) towards the base plate (2) and the cover plate (3) fits against the base plate (2). S4. The arc-shaped connecting plate (33) slides to the end of the arc-shaped groove (22), and the circular rivet hole (31) on the cover plate (3) is aligned with the square rivet hole (21). S5. Insert the rivet (4) into the square rivet hole (21) from the clearance hole (52) on the back of the contour positioning block (5). The clearance hole (52) is positioned corresponding to the square rivet hole (21). After the end of the rivet (4) passes through the circular rivet hole (31), it is riveted and fixed by a rivet gun. The cover plate (3) is riveted and fixed to the base plate (2). S6. Remove the rope wheel from the contour positioning block (5) to complete the assembly of the rope wheel.

2. The assembly method of a high-reliability elevator pulley according to claim 1, characterized in that, The base plate (2) is provided with four square rivet holes (21) arranged around the center hole.

3. The assembly method of a high-reliability elevator pulley according to claim 1, characterized in that, The bottom surface of the positioning groove (51) is provided with a protrusion (511).

4. The assembly method of a high-reliability elevator pulley according to claim 1, characterized in that, The depth of the positioning groove (51) is greater than or equal to the thickness of the base plate (2).

5. The assembly method of a high-reliability elevator pulley according to claim 1, characterized in that, A rope groove (24) is provided on the side end face of the base plate (2), and a contour support block (6) is provided in the rope groove (24). The contour support block (6) is ring-shaped and includes two contour support block units (61) arranged symmetrically facing each other.

6. The assembly method of a high-reliability elevator pulley according to claim 5, characterized in that, The end of the contour support block unit (61) is provided with a connecting hole (611), and the inner wall of the connecting hole (611) is provided with an internal threaded hole section (612). One of the contour support block units (61) is connected to another contour support block unit (61) through a threaded connector, and the threaded connector is threadedly connected to the internal threaded hole section (612).

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