Heavy pulley assembly capable of realizing multi-dimensional self-adjustment balance
Through the multi-dimensional self-adjustment pulley assembly and brush design, the problem of uneven force on uneven tracks of pulley assembly is solved, and the uniform force and track cleaning of pulley assembly is achieved, extending the service life and enhancing the load-bearing capacity.
Patent Information
- Application Number
- CN202422036601.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The existing pulley assembly cannot adjust the balance by itself when the ground rail is uneven, resulting in uneven force on the pulley and easily lift up and derail, affecting service life and load-bearing capacity.
A pulley assembly that can be adjusted and balanced in multiple dimensions is designed. Through the rotation of the pulley frame and pulley set, it can maintain a fit state when the track is uneven. It is equipped with a brush to clean the track to prevent sand and soil from depositing.
The pulley assembly is uniformly subjected to uneven tracks, extends service life, prevents derailment and wear of parts, enhances load-bearing capacity, and keeps the track clean with brushes.
Smart Images
Figure CN223089146U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of pulley assemblies, and particularly relates to a heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance.
Background Art
[0002] Pulley assemblies are mostly used under the sliding door bodies with floor tracks. In the existing pulley assembly structures, the pulleys are fixed on the mounting brackets and can only slide on flat horizontal straight tracks, which is rather inflexible. When the floor track becomes uneven due to installation errors, long-term wear, or adhesion of sand and soil, the existing pulley assemblies cannot perform balance adjustment. The pulleys and mounting brackets in the pulley assemblies are unevenly stressed, which not only easily causes the pulleys on one side of the mounting bracket to tilt, resulting in the derailment of the sliding door body, but also easily causes deformation or severe wear of some parts, reducing the load-bearing capacity of the pulley assembly itself and affecting the service life of the pulley assembly.
Content of the Utility Model
[0003] In order to keep the pulleys in contact with the floor track when the floor track is uneven, extend the service life of the pulley assembly, and solve the problem that the existing pulley assembly structure cannot self-level to make all pulleys evenly stressed, the utility model provides a heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance.
[0004] To solve the above problems, the utility model provides the following technical solutions:
[0005] A heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance, characterized in that: it includes a mounting plate, on the bottom surface of the mounting plate, there is a sleeve, at both ends of the sleeve, two pulley brackets are symmetrically arranged, in the sleeve, there is a connecting shaft, the pulley brackets are rotatably nested on the connecting shaft, on both sides of the pulley brackets, there are pulley shafts extending outwards, and on each pulley shaft, a pulley group is rotatably arranged.
[0006] The heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance as described above, characterized in that: the pulley groups are symmetrical to each other, each pulley group includes a pulley connecting piece and pulleys installed at both ends of the pulley connecting piece, at the center of the pulley connecting piece, there is a connecting hole, and the pulley group is rotatably nested and installed on the pulley shaft through the connecting hole.
[0007] The heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance as described above, characterized in that: at both ends inside the sleeve, there are first shaft sleeves nested, at both ends inside of the two symmetrical pulley brackets, there are second shaft sleeves nested, the first shaft sleeves and the second shaft sleeves are both nested on the connecting shaft, and on the pulley shaft and inside the connecting hole, there is a third shaft sleeve nested.
[0008] As described above, the heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance is characterized in that: at the top end of the pulley connecting piece and above the connecting hole, there is a limiting plate extending upward, and the top end height of the limiting plate extends upward beyond the height of the pulley.
[0009] As described above, the heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance is characterized in that: at the center of the lower end of the sleeve, there are brake plates extending to both sides, and the extending direction of the brake plates is perpendicular to the extending direction of the sleeve.
[0010] As described above, the heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance is characterized in that: at both ends of the mounting plate, there are brushes for cleaning the track. The brush includes a fixing plate and a brush head installed at the bottom end of the fixing plate. At both sides of the bottom end of the fixing plate, there are slots, and the brush head is inserted and installed in the slots.
[0011] As described above, the heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance is characterized in that: at the upper end of the brush, there is a positioning card slot, at both ends of the bottom surface of the mounting plate, there are card platforms that are snapped into the positioning card slot. In the positioning card slot, there are fixing holes penetrating through the fixing plate, and at the bottom end of the card platform, there are screw holes corresponding to the fixing holes.
[0012] As described above, the heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance is characterized in that: there is a shock-absorbing rubber pad above the mounting plate.
[0013] Compared with the prior art, the present utility model has the following advantages:
[0014] 1. For the heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance of the present utility model, the pulley frame is rotatably nested on the connecting shaft, so that the pulleys on both sides of the pulley frame can be finely adjusted by side rotation. When the tracks on both sides of the local track are uneven due to installation errors or long-term wear, the height of the pulley is automatically adjusted and balanced by the rotation of the pulley frame, so that the pulleys on both sides are kept in contact with the track, preventing one side of the pulley from tilting and causing derailment. At the same time, the pulleys on both sides of the pulley frame are evenly stressed and jointly share the gravity of the door panel, which can enhance the bearing capacity of the pulley assembly; moreover, the pulley group is rotatably nested on the pulley shaft, so that the pulley group can be finely adjusted by up and down rotation. When the track of the local track is uneven due to production and processing problems or adhesion of sand and soil, the pulley will automatically perform rotation fine adjustment when sliding through this area on the track, so that the pulley group slides obliquely up and down, and the pulley is kept in contact with the track; the pulleys in the pulley assembly structure of the present utility model can self-adjust the balance in multiple dimensions, and all the pulleys are evenly stressed, solving the problem of deformation of some parts or local severe wear caused by unbalanced stress, thereby effectively extending the service life of the pulley assembly.
[0015] 2. The heavy pulley assembly with multi-dimensional self-adjusting balance of the present utility model is provided with brushes at both ends of the mounting plate, which can clean the track before the pulley slides over the track, preventing sand and soil from depositing and adsorbing on the track and affecting the flatness of the track.
Description of the Drawings
[0016] Figure 1 is the perspective view of the pulley assembly;
[0017] Figure 2 is the bottom view of the pulley assembly;
[0018] Figure 3 is Figure 2 the sectional view taken along the direction of A-A in
[0019] Figure 4 is Figure 2 the sectional view taken along the direction of B-B in
[0020] Figure 5 is the first exploded view of the pulley assembly;
[0021] Figure 6 is the second exploded view of the pulley assembly;
[0022] Figure 7 is the third exploded view of the pulley assembly;
[0023] In the figure: 1 is the mounting plate; 2 is the sleeve; 3 is the connecting shaft; 4 is the pulley frame; 5 is the pulley shaft; 6 is the pulley set; 7 is the pulley connecting piece; 8 is the pulley; 9 is the connecting hole; 10 is the limiting plate; 11 is the first bushing; 12 is the second bushing; 13 is the third bushing; 14 is the brake plate; 15 is the brush; 16 is the fixing plate; 17 is the slot; 18 is the brush head; 19 is the positioning card slot; 20 is the clamping platform; 21 is the fixing hole; 22 is the screw hole; 23 is the damping rubber pad.
Detailed Embodiment
[0024] The technical features of the present utility model will be further described in detail below with reference to the drawings, so that those skilled in the art can understand.
[0025] A heavy pulley assembly with multi-dimensional self-adjusting balance, as Figures 1 to 7As shown in the figure, it includes a mounting plate 1. A sleeve 2 is provided on the bottom surface of the mounting plate 1. Two pulley brackets 4 are symmetrically provided at both ends of the sleeve 2. A connecting shaft 3 is provided in the sleeve 2. The pulley brackets 4 are rotatably nested on the connecting shaft 3. Pulley shafts 5 extending outward are provided on both sides of the pulley brackets 4. Pulley sets 6 are rotatably provided on each of the pulley shafts 5. The pulley brackets 4 are rotatably nested on the connecting shaft 3, enabling the pulleys 8 on both sides of the pulley brackets 4 to perform lateral rotation fine-tuning. When the tracks on both sides of the local track are uneven due to installation errors or long-term wear, the height of the pulleys 8 is automatically adjusted and balanced by the rotation of the pulley brackets 4, so that the two sides of the pulleys 8 are kept in contact with the tracks, preventing the pulleys 8 on one side from tilting and causing derailment. At the same time, the pulleys 8 on both sides of the pulley brackets 4 are evenly stressed and jointly share the gravity of the door panel, which can enhance the load-bearing capacity of the pulley assembly. Moreover, the pulley sets 6 are rotatably nested on the pulley shafts 5, enabling the pulley sets 6 to perform up-and-down rotation fine-tuning. When the track of the local track is uneven due to production and processing problems or adhesion of sand and soil, when the pulley 8 slides on the track through this area, it will automatically perform rotation fine-tuning, causing the pulley sets 6 to tilt up and down and slide over, and the pulley 8 is kept in contact with the track. The pulleys 8 in the pulley assembly structure can self-adjust and balance in multiple dimensions, and all the pulleys are evenly stressed, solving the problems of deformation of some parts or serious local wear caused by unbalanced stress, thereby effectively extending the service life of the pulley assembly.
[0026] Specifically, the pulley sets 6 are symmetric with each other. Each pulley set 6 includes a pulley connecting piece 7 and pulleys 8 installed at both ends of the pulley connecting piece 7. A connecting hole 9 is provided at the center of the pulley connecting piece 7. The pulley set 6 is rotatably nested on the pulley shaft 5 through the connecting hole 9.
[0027] In addition, first shaft sleeves 11 are nested inside both ends of the sleeve 2. Second shaft sleeves 12 are nested inside both ends of the two symmetric pulley brackets 4. The first shaft sleeves 11 and the second shaft sleeves 12 are both nested on the connecting shaft 3. A third shaft sleeve 13 is nested on the pulley shaft 5 and inside the connecting hole 9. The materials of the connecting shaft 3 and the pulley brackets 4 are generally made of steel. The first shaft sleeves 11, the second shaft sleeves 12, and the third shaft sleeves 13 can reduce rotational friction, reduce the wear of the connecting shaft 3 and the pulley shaft 5, and at the same time reduce noise.
[0028] Specifically, a limiting plate 10 extending upward is provided at the top of the pulley connecting piece 7 and above the connecting hole 9. When the pulley block 6 rotates for fine adjustment, at its maximum deflection angle, the top of the limiting plate 10 abuts against the bottom surface of the mounting plate 1. The top height of the limiting plate 10 extends upward beyond the height of the pulley 8 to prevent the pulley 8 from contacting the mounting plate 1 when the pulley block 6 deflects, so as not to affect the rolling of the pulley 8.
[0029] In addition, a brake plate 14 extending to both sides is provided at the center of the lower end of the sleeve 2. The extending direction of the brake plate 14 is perpendicular to the extending direction of the sleeve 2. The brake plate 14 can abut against the track when the pulley at one end of the door panel derails, thereby increasing the sliding friction for positioning and preventing the pulley assembly from sliding the door panel further and causing the door panel to completely derail and fall.
[0030] Specifically, brushes 15 for cleaning the track are provided at both ends of the mounting plate 1. The brush 15 includes a fixing plate 6 and a brush head 18 mounted at the bottom end of the fixing plate 6. Slots 17 are provided on both sides of the bottom end of the fixing plate 6 to facilitate the replacement of the brush head 18. The brush head 18 is inserted and installed in the slot 17. There are two brush heads 18, which are respectively used to clean the two tracks corresponding to the pulleys 8 on both sides of the pulley frame 4.
[0031] In addition, a positioning card slot 19 is provided at the upper end of the brush 15. Card platforms 20 that are snapped into the positioning card slot 19 are provided at both ends of the bottom surface of the mounting plate 1. A fixing hole 21 penetrating the fixing plate 6 is provided in the positioning card slot 19. A screw hole 22 corresponding to the fixing hole 21 is provided at the bottom end of the card platform 20. When installing the brush 15, first engage the positioning card slot 19 with the card platform 20. At this time, the fixing hole 21 and the screw hole 22 are automatically aligned, and finally, a screw is screwed in for fixation.
[0032] In addition, a shock-absorbing rubber pad 23 is provided above the mounting plate 1 to reduce the vibration noise generated when the pulley assembly slides.
[0033] The embodiments described in the present invention are only descriptions of the preferred embodiments, and are not limited to the precise structures already described and shown in the drawings. Without departing from the design concept of the present invention, various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope of the present invention.
Claims
1. A heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance, characterized in that: It includes a mounting plate (1). A sleeve (2) is provided on the bottom surface of the mounting plate (1). Two pulley brackets (4) are symmetrically provided at both ends of the sleeve (2). A connecting shaft (3) is provided in the sleeve (2). The pulley brackets (4) are rotatably nested on the connecting shaft (3). Pulley shafts (5) extending outwards are provided on both sides of the pulley brackets (4). Pulley sets (6) are rotatably provided on each of the pulley shafts (5).
2. The heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance according to claim 1, wherein: The pulley sets (6) are symmetric with each other. Each pulley set (6) includes a pulley connecting piece (7) and pulleys (8) installed at both ends of the pulley connecting piece (7). A connecting hole (9) is provided at the center of the pulley connecting piece (7). The pulley set (6) is rotatably nested and installed on the pulley shaft (5) through the connecting hole (9).
3. The heavy pulley assembly capable of multi-dimensional self-adjusting balance according to claim 2, wherein: First shaft sleeves (11) are nested inside both ends of the sleeve (2). Second shaft sleeves (12) are nested inside both ends of the two symmetric pulley brackets (4). The first shaft sleeves (11) and the second shaft sleeves (12) are both nested on the connecting shaft (3). A third shaft sleeve (13) is nested on the pulley shaft (5) and inside the connecting hole (9).
4. The heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance according to claim 2, characterized in that: A limiting plate (10) extending upwards is provided at the top end of the pulley connecting piece (7) and above the connecting hole (9). The top end height of the limiting plate (10) extends upwards beyond the height of the pulley (8).
5. The heavy pulley assembly capable of multi-dimensional self-adjusting balance according to claim 1, characterized in that: A brake plate (14) extending towards both sides is provided at the center of the lower end of the sleeve (2). The extending direction of the brake plate (14) is perpendicular to the extending direction of the sleeve (2).
6. The heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance according to claim 1, wherein: Brushes (15) for cleaning the track are provided at both ends of the mounting plate (1). The brushes (15) include a fixing plate (16) and a brush head (18) installed at the bottom end of the fixing plate (16). Slots (17) are provided on both sides of the bottom end of the fixing plate (16). The brush head (18) is inserted and installed in the slots (17).
7. The heavy pulley assembly capable of multi-dimensional self-adjusting balance according to claim 6, wherein: A positioning card slot (19) is provided at the upper end of the brush (15). Card platforms (20) that are inserted into the positioning card slot (19) are provided at both ends of the bottom surface of the mounting plate (1). A fixing hole (21) penetrating the fixing plate (16) is provided in the positioning card slot (19). A screw hole (22) corresponding to the fixing hole (21) is provided at the bottom end of the card platform (20).
8. The heavy-duty pulley assembly capable of multi-dimensional self-adjusting balance according to claim 1, characterized in that: A shock-absorbing rubber pad (23) is provided above the mounting plate (1).