High-load-bearing double-track pulley assembly

Abstract

The utility model belongs to the technical field of door and window structures, and provides a high-load-bearing double-track pulley assembly which comprises a fixed support, a middle pulley assembly, a horizontal adjusting mechanism and a leveling pulley assembly. The leveling sliding wheel assembly is arranged on the fixing support. The middle pulley assembly is in sliding fit with the fixing support. The horizontal adjusting mechanism is arranged on the fixing support and provided with an elastic adjusting part, the elastic adjusting part can act on the middle pulley assembly to move relative to the height direction of the fixing support, and the height difference exists between the bottom of the middle pulley assembly and the bottom of the leveling pulley assembly. The high-load-bearing double-track pulley assembly has the horizontal adjusting function and is good in load bearing, in the actual production process, the tracks and the pulley assembly cannot be absolutely horizontal due to the existence of manufacturing errors, all pulleys can be evenly stressed through the horizontal adjusting function, and the overall service life of the pulley assembly is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of door and window structures, and particularly relates to a high-load-bearing double-track pulley assembly. Background Art

[0002] As the visible area of ​​sliding door and window profiles continues to become narrower, in order to meet the needs of high load-bearing capacity, the sliding rails have begun to change from single-track to double-track.

[0003] The load-bearing capacity of the pulley assembly has a great influence on its structure. Currently, the high-load-bearing double-track pulleys on the market do not have a level adjustment function. However, in actual situations, it is often difficult to ensure that the left and right tracks are absolutely equal in height or have simultaneous ups and downs. As a result, it is difficult for such high-load-bearing double-track pulleys on the market to ensure that all wheels are evenly stressed, thus affecting the overall life of the pulley and the smoothness of pushing and pulling.

[0004] To solve these problems, we have launched a high-load-bearing double-track pulley assembly with horizontal adjustment function. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a high-load-bearing double-track pulley assembly that can solve the above-mentioned functions.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A high-load-bearing double-track pulley assembly comprises a fixed bracket, an intermediate pulley assembly, a leveling mechanism and a leveling pulley assembly;

[0008] The leveling wheel assembly is arranged on the fixed bracket;

[0009] The intermediate pulley assembly is in sliding cooperation with the fixed bracket;

[0010] The horizontal adjustment mechanism is arranged on the fixed bracket, and the horizontal adjustment mechanism has an elastic adjustment part. The elastic adjustment part can act on the intermediate pulley assembly to move in the height direction relative to the fixed bracket, and create a height difference between the bottom of the intermediate pulley assembly and the bottom of the leveling pulley assembly.

[0011] Preferably, the leveling pulley assembly includes a connecting plate, a leveling pulley member and a short pulley shaft, the number of the connecting plates is two, the number of the leveling pulley members is two or more, and the short pulley shaft is provided between the two connecting plates;

[0012] The fixing bracket is provided with a circular hole, and the circular hole is provided with a connecting shaft for fixing the connecting plate.

[0013] Preferably, a blocking portion is provided on the fixing bracket, the short pulley shaft cooperates with the connecting plate, and the blocking portion is relatively arranged above the short pulley shaft.

[0014] Preferably, the leveling pulley assemblies are symmetrically arranged on both sides of the intermediate pulley assembly, and the number of the leveling pulley assemblies on one side of the intermediate pulley assembly is more than two and they are arranged in parallel.

[0015] Preferably, the intermediate pulley assembly includes an intermediate pulley member and a long pulley shaft. The number of the intermediate pulley members is more than two and the intermediate pulley members are slidably engaged with the fixed bracket through the long pulley shaft.

[0016] Preferably, the fixing bracket is provided with a waist hole that is slidably matched with the long pulley shaft, and the length extension direction of the waist hole is consistent with the height direction of the fixing bracket.

[0017] Preferably, the horizontal adjustment mechanism includes a fixing member and an elastic plate, the elastic plate is arranged on the fixed bracket through the fixing member, the bottom of the elastic plate is in contact with the long pulley shaft, and the elastic plate is the elastic adjustment part of the horizontal adjustment mechanism.

[0018] Preferably, the level adjustment mechanism further includes a decorative plate, which covers the top of the elastic plate and cooperates with the fixing member.

[0019] Compared with the prior art, the beneficial effects of the present invention include:

[0020] The high-load-bearing dual-track pulley assembly of the present application has a horizontal adjustment function and good load-bearing capacity: in the actual production process, the track and pulley assembly cannot be absolutely horizontal due to the existence of manufacturing errors. The horizontal adjustment function of the present application can ensure that all pulleys can be evenly stressed, thereby improving the overall life of the pulley assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a three-dimensional view of the present invention.

[0023] Figure 2 This is a schematic diagram of the explosion structure of the utility model.

[0024] Figure 3 This is a schematic exploded view of the structure of the leveling pulley assembly of the present invention.

[0025] Figure 4 It is a cross-sectional view of the utility model.

[0026] in:

[0027] 1-fixed bracket, 101-round hole, 102-connecting shaft, 103-waist hole, 104-blocking part;

[0028] 2-intermediate pulley assembly, 201-intermediate pulley member, 202-long pulley shaft;

[0029] 3- horizontal adjustment mechanism, 301- fixing member, 302- elastic plate, 303- decorative plate;

[0030] 4-leveling smooth pulley assembly, 401-connecting plate, 402-leveling smooth pulley member, 403-short pulley shaft, 404-blocking piece. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of this application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention. The embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0033] Example:

[0034] like Figure 1-4 As shown, this embodiment provides a high-load-bearing double-track pulley assembly, including a fixed bracket 1, an intermediate pulley assembly 2, a leveling mechanism 3 and a leveling pulley assembly 4;

[0035] The leveling wheel assembly 4 is arranged on the fixed bracket 1;

[0036] The intermediate pulley assembly 2 is in sliding engagement with the fixed bracket 1;

[0037] The horizontal adjustment mechanism 3 is arranged on the fixed bracket 1. The horizontal adjustment mechanism 3 has an elastic adjustment part, which can act on the intermediate pulley assembly 2 to move in the height direction relative to the fixed bracket 1, and create a height difference between the bottom of the intermediate pulley assembly 2 and the bottom of the leveling pulley assembly 4.

[0038] The high-load-bearing double-track pulley assembly of this embodiment has a horizontal adjustment function. After the horizontal adjustment mechanism 3 is installed on the fixed bracket 1, the elastic adjustment part of the horizontal adjustment mechanism 3 abuts against the intermediate pulley assembly 2. The elastic adjustment part acts on the intermediate pulley assembly 2 to move in the height direction (towards the bottom direction) relative to the fixed bracket 1, so that there is a height difference between the bottom of the intermediate pulley assembly 2 and the bottom of the smoothing pulley assembly 4. Its function is: when the high-load-bearing double-track pulley assembly is installed on the doors and windows, the intermediate pulley assembly 2 will first contact the track and support part of the weight of the high-load-bearing double-track pulley assembly. Under the action of the gravity of the high-load-bearing double-track pulley assembly, the elastic adjustment part is deformed. At the same time, the intermediate pulley assembly 2 moves relative to the top direction of the fixed bracket 1. When the height difference between the bottom of the intermediate pulley assembly 2 and the bottom of the smoothing pulley assembly 4 is zero, the smoothing pulley assembly 4 will contact the track and support the remaining weight of the high-load-bearing double-track pulley assembly.

[0039] At the same time, the height difference mentioned above is also to eliminate the two dimensional errors and achieve the purpose of uniform force on the pulleys. The first error is: in the traditional dual-track pulley assembly, the connection between each pulley and the fixed bracket 1 cannot be in the same plane due to manufacturing errors; the second error is: the track is not at the same horizontal position as the bottom of each pulley due to installation or manufacturing accuracy problems. The above two errors will cause uneven force on each pulley. Because the structure of the present application can reduce the impact of these errors on the life of the pulley, all pulleys can be evenly stressed, thereby improving the overall life of the pulley assembly.

[0040] The specific structure of the leveling wheel assembly 4 of this embodiment is as follows:

[0041] It includes a connecting plate 401, a leveling pulley 402 and a short pulley shaft 403. There are two connecting plates 401, and there are more than two leveling pulleys 402. The short pulley shaft 403 is provided between the two connecting plates 401.

[0042] A circular hole 101 is provided on the fixing bracket 1 , and a connecting shaft 102 for fixing the connecting plate 401 is provided on the circular hole 101 .

[0043] At the same time, a blocking portion 104 is provided on the fixed bracket 1, the short pulley shaft 403 cooperates with the connecting plate, and a blocking piece 404 is provided at the short pulley shaft 403. The blocking piece 404 is used to prevent the pulley shaft 403 from sliding out of the connecting plate 401. The blocking portion 104 is relatively provided above the short pulley shaft 403.

[0044] In the above structure, the leveling smooth pulley assembly 4 realizes rotational cooperation with the fixed bracket 1 through the matching structure of the connecting shaft 102 and the circular hole 101, so that the leveling smooth pulley assembly 4 can rotate relative to the fixed bracket 1. At the same time, the structure of the blocking part 104 and the short pulley shaft 403 can also limit the rotation angle of the leveling smooth pulley assembly 4 relative to the fixed bracket 1. The purpose is to automatically adjust the position of the leveling smooth pulley assembly 4 relative to the fixed bracket 1 according to the different heights of the track.

[0045] The specific arrangement of the leveling pulley assemblies 4 of this embodiment is as follows: they are symmetrically arranged on both sides of the intermediate pulley assembly 2, and the number of the leveling pulley assemblies 4 on one side of the intermediate pulley assembly 2 is more than two and they are arranged in parallel.

[0046] The specific structure of the intermediate pulley assembly 2 of this embodiment includes an intermediate pulley member 201 and a long pulley shaft 202 . There are more than two intermediate pulley members 201 and they are slidably matched with the fixed bracket 1 through the long pulley shaft 202 .

[0047] Specifically, the fixed bracket 1 is provided with a waist hole 103 that slides with the long pulley shaft 202. The length extension direction of the waist hole 103 is consistent with the height direction of the fixed bracket 1. At the same time, a baffle 404 is also provided at the long pulley shaft 202 to prevent the long pulley shaft 202 from sliding out of the fixed bracket 1.

[0048] The specific structure of the horizontal adjustment mechanism 3 of this embodiment includes a fixing member 301 and an elastic plate 302. The elastic plate 302 is mounted on the fixed bracket 1 via the fixing member 301. The bottom of the elastic plate 302 abuts the long pulley shaft 202, and the elastic plate 302 serves as the elastic adjustment portion of the horizontal adjustment mechanism 3. The elastic plate 302 can compress the long pulley shaft 202, limiting its movement in the height direction of the fixed bracket 1. Alternatively, the elastic plate 302 can be a spring, a torsion spring, or other elastic component.

[0049] Specifically, the horizontal adjustment mechanism 3 further includes a decorative plate 303 . The decorative plate 303 covers the top of the elastic plate 302 and cooperates with the fixing member 301 .

[0050] In summary, the advantages of this application are as follows:

[0051] 1. It has horizontal adjustment function and good load-bearing capacity: In the actual production process, the track and pulley assembly cannot be absolutely level due to the existence of manufacturing errors. The horizontal adjustment function of this product can make all pulleys evenly stressed and improve the overall life of the pulley assembly.

[0052] 2. Simple structure and high reliability: The horizontal adjustment structure of this product is simple and does not have too many auxiliary parts, which improves the reliability of the product and reduces production costs.

[0053] 3. Beautiful product: the intermediate pulley assembly 2, the level adjustment mechanism 3 and the leveling pulley assembly 4 are arranged in the fixed bracket 1, and the overall appearance is simple.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high load-bearing double-track pulley assembly, characterized in that: include: Fixed bracket, intermediate pulley assembly, leveling mechanism and leveling pulley assembly; The leveling wheel assembly is arranged on the fixed bracket; The intermediate pulley assembly is in sliding cooperation with the fixed bracket; The horizontal adjustment mechanism is arranged on the fixed bracket, and the horizontal adjustment mechanism has an elastic adjustment part. The elastic adjustment part can act on the intermediate pulley assembly to move in the height direction relative to the fixed bracket, and create a height difference between the bottom of the intermediate pulley assembly and the bottom of the leveling pulley assembly.

2. The high load-bearing double-track pulley assembly according to claim 1, characterized in that: The leveling pulley assembly includes a connecting plate, a leveling pulley member and a short pulley shaft. The number of the connecting plates is two, and the number of the leveling pulley members is more than two, and the leveling pulley members are arranged between the two connecting plates through the short pulley shaft. The fixing bracket is provided with a circular hole, and the circular hole is provided with a connecting shaft for fixing the connecting plate.

3. The high load-bearing double-track pulley assembly according to claim 2, characterized in that: The fixing bracket is provided with a blocking portion, the short pulley shaft is matched with the connecting plate, and the blocking portion is relatively arranged above the short pulley shaft.

4. The high load-bearing double-track pulley assembly according to claim 2, characterized in that: The leveling pulley assemblies are symmetrically arranged on both sides of the intermediate pulley assembly. The number of the leveling pulley assemblies on one side of the intermediate pulley assembly is more than two and they are arranged in parallel.

5. The high load-bearing double-track pulley assembly according to claim 1, characterized in that: The intermediate pulley assembly includes an intermediate pulley member and a long pulley shaft. The number of the intermediate pulley members is more than two and the intermediate pulley members are slidably matched with the fixed bracket through the long pulley shaft.

6. The high load-bearing double-track pulley assembly according to claim 5, characterized in that: The fixing bracket is provided with a waist hole which is slidably matched with the long pulley shaft, and the length extension direction of the waist hole is consistent with the height direction of the fixing bracket.

7. The high load-bearing double-track pulley assembly according to claim 6, characterized in that: The horizontal adjustment mechanism includes a fixing member and an elastic plate. The elastic plate is arranged on the fixing bracket through the fixing member. The bottom of the elastic plate abuts against the long pulley shaft. The elastic plate is the elastic adjustment part of the horizontal adjustment mechanism.

8. The high load-bearing double-track pulley assembly according to claim 7, characterized in that: The level adjustment mechanism further includes a decorative plate, which covers the top of the elastic plate and cooperates with the fixing member.

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