Sliding door pulley module, sliding door system and lifting sliding door system

Abstract

The utility model belongs to the technical field of sliding doors, and particularly relates to a sliding door pulley module, a sliding door system and a lifting sliding door system.The sliding door pulley module comprises a shell, an elastic element and a sliding unit.The sliding door pulley module is provided with a pulley capable of floating up and down, the pulley can transmit acting force to a bearing seat through a supporting shaft after being subjected to upward thrust of a rail, and therefore the sliding door can be lifted. The bearing seat transversely moves to compress the elastic element, meanwhile, the pulley moves upwards in a self-adaptive mode, so that adaptive adjustment is conducted according to the height of the rail, it is ensured that the pulley makes contact with the rail all the time, the compressed elastic element applies downward pressure to the pulley through the bearing seat, and the pulley always keeps bearing force on the rail; therefore, all the wheels installed at the bottom of the door leaf can be guaranteed to keep uniform bearing force, the door leaf can be pushed and pulled more smoothly, and all the wheels are more durable.

Description

Technical Field

[0001] The utility model belongs to the technical field of sliding doors, and in particular relates to a sliding door pulley module, a sliding door system and a lifting sliding door system. Background Art

[0002] Existing light sliding doors can generally be used normally by installing ordinary pulley modules on both sides of the bottom. This ordinary pulley module can adaptively swing its pulley according to the ups and downs of the track, thereby ensuring that the pulley can contact the track and make the pulleys evenly supported. However, once the door leaf exceeds a certain weight, in order to improve the support for the door leaf, it is usually necessary to add multiple pulleys between the ordinary pulley modules on both sides as auxiliary wheels to bear more weight. However, due to considerable manufacturing errors and track horizontal height errors, once the number of pulleys increases, the entire pulley system of the door leaf becomes very complicated, and it is impossible to ensure that all pulleys at the bottom of the door leaf are in contact with the track, resulting in uneven force on each pulley. Some pulleys will deform due to excessive load-bearing, which will cause the door leaf to push and pull unsmoothly and be easily damaged. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of existing sliding doors that, after adding multiple auxiliary wheels, it is impossible to ensure that each pulley is in contact with the track, resulting in uneven force on each pulley, making the door leaf not smooth in pushing and pulling and easy to be damaged. A method is provided by setting the pulley in a form that can float up and down, thereby ensuring that each pulley can maintain contact with the track, so that each pulley is evenly stressed.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A sliding door pulley module includes: a housing, an elastic element and a sliding unit, wherein the sliding unit includes:

[0006] The bearing seat is constructed with first movable inclined slots on opposite sides extending obliquely upward toward a side away from the elastic element, and second movable inclined slots on opposite sides of the housing are constructed with second movable inclined slots extending obliquely upward toward a side close to the elastic element;

[0007] A pulley is mounted on the bearing seat and is movably engaged with the first movable inclined slots on both sides and the second movable inclined slots on both sides through a supporting shaft;

[0008] The elastic element acts on the bearing seat and the shell, so that the pulley can adjust its position along the first movable inclined slot and the second movable inclined slot when a force is applied to it.

[0009] Compared with the prior art, the sliding door pulley module of the utility model is provided with a pulley that can float up and down. After the pulley is subjected to the upward thrust of the track, the pulley will transmit the force to the bearing seat through the support shaft, so that the bearing seat moves laterally to compress the elastic element. At the same time, the pulley moves upward adaptively, thereby adaptively adjusting according to the height of the track to ensure that the pulley is always in contact with the track, and the compressed elastic element applies downward pressure to the pulley through the bearing seat, so that the pulley always maintains the bearing force on the track. Therefore, it can be ensured that each wheel installed at the bottom of the door leaf maintains a uniform bearing force, making the door leaf smoother to push and pull and each wheel more durable.

[0010] Furthermore, the shell is respectively constructed with blocking parts that abut against the upper side and the lower side of the bearing seat.

[0011] Furthermore, the shell includes two side plates arranged at a relative interval on the outside of the bearing seat, the second movable inclined slot is opened on the side plates, and the upper side and the lower side of the side plates are bent inward to form the blocking portion.

[0012] Furthermore, the supporting seat includes two side baffles arranged opposite to each other, and a front baffle connecting the two side baffles located between the sides close to the elastic element. The side baffles and the front baffle form an installation area, and the elastic element is fixedly connected to the front baffle.

[0013] In some specific embodiments, two sliding units are provided in a mirror-symmetrical manner, and further include a first fixed seat fixed between the two sliding units, the first fixed seat having a first assembly groove extending laterally therethrough, the elastic element being configured as a spring, which is installed in the first assembly groove, and its two ends extending out of the first assembly groove and connected to the corresponding supporting seat of the sliding unit.

[0014] In some specific embodiments, it also includes a second fixing seat fixedly arranged on the shell, and more than two sliding units are arranged in a transversely spaced arrangement, and more than two elastic elements and second fixing seats are respectively provided corresponding to the sliding units. The elastic element is configured as a spring having a fixed end and a free end, and each end of the second fixing seat is provided with a second assembly groove for installing the fixed end, and the free end is fixedly connected to the supporting seat corresponding to the sliding unit.

[0015] Furthermore, it also includes a bracket movably arranged on the upper side of the shell for connecting the door leaf, the upper side of the shell is constructed with a guide positioning part, the guide positioning part is provided with an inclined guide part and a horizontal locking part connected to the guide part, the bracket is provided with a rotatable rolling member, the rolling member is provided with a rolling coupling part that rolls with the guide positioning part, and the rolling coupling part is driven by the lateral movement of the shell to slide upward along the guide part to the horizontal locking part, and slide downward to the bottom of the guide part.

[0016] Furthermore, it also includes connecting components arranged at opposite ends of the shell, and the connecting components are provided with longitudinally extending connecting holes.

[0017] Another object of the present invention is to provide a sliding door system using the above-mentioned sliding door pulley module, including a door leaf, a support wheel module, and the above-mentioned sliding door pulley module, the support wheel module being fixedly arranged on the left and right sides of the bottom of the door leaf, the support wheel module being configured with an adjusting wheel group that can swing left and right around an axis perpendicular to the door leaf, the adjusting wheel group including sliding wheels located on the left and right sides of the axis, the sliding door pulley module being fixedly arranged between the support wheel modules located on the left and right sides of the bottom of the door leaf, and at least one thereof being arranged at a horizontal interval.

[0018] Another object of the present invention is to provide a lifting sliding door system using the above-mentioned sliding door pulley module, including a door leaf, a support wheel module, the above-mentioned sliding door pulley module, and a handle. The support wheel module is fixedly arranged on the left and right sides of the bottom of the door leaf. The support wheel module is equipped with a support wheel bracket and an adjusting wheel group. The support wheel bracket can be swingable left and right around an axis perpendicular to the door leaf and is arranged on the upper side of the adjusting wheel group. The adjusting wheel group includes sliding wheels located on the left and right sides of the axis. The door leaf is fixedly connected to the support wheel bracket.

[0019] The above-mentioned sliding door pulley module also includes a bracket movably arranged on the upper side of the shell for connecting to the bottom of the door leaf, and the upper side of the shell is constructed with a guide positioning part, and the guide positioning part is provided with an inclined guide part and a horizontal locking part connected to the guide part, and the bracket is provided with a rotatable rolling member, and the rolling member is provided with a rolling coupling part that rolls with the guide positioning part, and the rolling coupling part is driven by the lateral movement of the shell to slide upward along the guide part to the horizontal locking part, and slide downward to the bottom of the guide part.

[0020] The sliding door pulley module is fixedly arranged between the support wheel modules on the left and right sides of the bottom of the door leaf, and at least one is arranged at a horizontal interval. The bracket is fixedly connected to the door leaf. The sliding door pulley module located on the adjacent side of the support wheel module is fixedly connected to the adjusting wheel group and the shell through a transmission rod. The adjacent sliding door pulley modules are fixedly connected to the shells by another transmission rod. The handle is arranged on the door leaf for controlling the lateral movement of the adjusting wheel group relative to the support wheel bracket, and controlling the lateral movement of the shell relative to the bracket, so that the support wheel bracket can be raised and lowered relative to the adjusting wheel group, and the bracket can be raised and lowered relative to the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the sliding door pulley module of Example 1 and Example 2;

[0022] Figure 2 Exploded views of the sliding door pulley modules of Embodiment 1 and Embodiment 2;

[0023] Figure 3 It is a three-dimensional diagram of the sliding door pulley module of the third embodiment and the fourth embodiment;

[0024] Figure 4 Exploded views of the sliding door pulley modules of the third and fourth embodiments;

[0025] Figure 5 This is a schematic diagram of the sliding door pulley module when the pulley is not pushed upward;

[0026] Figure 6 This is a schematic diagram of the sliding door pulley module when the pulley is pushed upward by the track;

[0027] Figure 7 Schematic diagram of a sliding door system according to a fifth embodiment;

[0028] Figure 8 Schematic diagram of the lift-sliding door system of Example 6. DETAILED DESCRIPTION

[0029] A preferred embodiment of the present invention is described below with reference to the accompanying drawings. Example 1

[0030] See also Figure 1 and Figure 2The present embodiment provides a sliding door pulley module, including a housing 1, an elastic element 2 and a sliding unit 3. The elastic element 2 can be elastically and telescopically arranged in the housing 1. The sliding unit 3 includes a bearing seat 31, a supporting shaft 32 and a pulley 33. The bearing seat 31 is configured with first movable inclined grooves 311 extending obliquely upward toward the side away from the elastic element 2 on opposite sides. The bearing seat 31 is located between the first movable inclined grooves 311 on both sides and a mounting area 312 is configured. The housing 1 is configured with first movable inclined grooves 311 extending obliquely upward toward the side close to the elastic element 2 on opposite sides. The second movable inclined slot 313 extends upward, and the pulley 33 is installed in the installation area 312. The supporting shaft 32 passes through the first movable inclined slots 311 on both sides, the second movable inclined slots 313 on both sides and the above-mentioned pulley 33. The pulley 33 is movably matched with the first movable inclined slots 311 on both sides and the second movable inclined slots 313 on both sides through the supporting shaft 32. The elastic element 2 acts on the bearing seat 31 and the shell 1, so that the pulley 33 can move along the first movable inclined slot 311 and the second movable inclined slot 313 when subjected to a force, thereby adjusting the position.

[0031] See also Figure 1 and Figure 7 The working principle of the present invention is as follows: The sliding door pulley module of the present invention is installed at the bottom of the door leaf 7. Before the door leaf 7 is installed on the track 10, Figure 5 As shown, the bottom of the first movable inclined groove 311 and the bottom of the second movable inclined groove 313 overlap to form a V-shaped structure. Under the thrust of the elastic element 2, the sliding unit 3 will be pushed to the support shaft 32 and placed at the bottom of the second movable inclined groove 313. Therefore, the height of the pulley 33 before the door leaf 7 is installed is at the lowest position, usually set to be lower than the height of the sliding wheel 81 of the support wheel module 8 of the door leaf 7. When the door leaf 7 is installed on the track 10, as shown in FIG. Figure 6 As shown, the first movable inclined groove 311 moves laterally with the supporting seat 31 to form an inverted V-shaped structure with the second movable inclined groove 313. Since the track 10 pushes the pulley 33 of the sliding unit 3 upward, the force is transferred to the support shaft 32, which drives the supporting seat 31 and the wheel body to move respectively, driving the supporting seat 31 to move laterally toward the direction of the elastic element 2, that is, Figure 6 The direction indicated by the middle arrow compresses the elastic element 2 and drives the pulley 33 to adjust adaptively, moving upward along the first movable inclined slot 311 in the direction away from the elastic element 2, thereby ensuring that the pulley 33 can definitely contact the track 10 and share the load of the door leaf 7.

[0032] See also Figure 1 and Figure 2 The housing 1 is respectively constructed with blocking portions 11 that abut against the upper and lower sides of the bearing seat 31 to ensure that the bearing seat 31 can only move laterally.

[0033] See also Figure 1 and Figure 2 The shell 1 includes two side panels 12 arranged at a relative interval on the outside of the supporting seat 31, and the second movable inclined groove 313 is opened on the side panel 12. The upper and lower sides of the side panel 12 are bent inward to form the blocking portion 11. The blocking portion 11 is formed as an integral structure with the side panel 12. This formation method is simple in process and simple in structure.

[0034] See also Figure 2 The bearing seat 31 includes two side baffles 301 arranged opposite to each other, and a front baffle 302 connecting the two side baffles 301 and located between the side close to the elastic element 2. The side baffles 301 and the front baffle 302 enclose the installation area 312, and the elastic element 2 is fixedly connected to the front baffle 302. The bearing seat 31 with the above-mentioned setting method has a simple structure and is easy and quick to install.

[0035] Compared with the prior art, the sliding door pulley module of the present invention is provided with a pulley 33 that can float up and down. After being pushed upward by the track, the pulley 33 will transmit the force to the bearing seat 31 through the support shaft 32, so that the bearing seat 31 moves laterally to compress the elastic element 2. At the same time, the pulley 33 moves upward adaptively, thereby adaptively adjusting according to the height of the track to ensure that the pulley 33 is always in contact with the track, and the compressed elastic element 2 applies downward pressure to the pulley 33 through the bearing seat 31, so that the pulley 33 always maintains the bearing force on the track, thereby ensuring that the wheels installed at the bottom of the door leaf 7 maintain uniform bearing force, making the door leaf 7 smoother to push and pull and the wheels more durable. Example 2

[0036] See also Figure 1 and Figure 2 Based on Example 1, this embodiment provides a specific implementation plan of a sliding door pulley module, wherein two sliding units 3 are arranged in a mirror-symmetrical manner, and further includes a first fixing seat 4 fixedly arranged between the two sliding units 3, wherein the first fixing seat 4 passes through a first assembly groove 41 extending laterally, and the elastic element 2 is configured as a spring, which is installed in the first assembly groove 41, and its two ends extend out of the first assembly groove 41 and are connected to the corresponding bearing seat 31 of the sliding unit 3.

[0037] The sliding door pulley module of this embodiment is configured to control the elastic lateral movement of the sliding units 3 on both sides by setting a first fixed seat 4 between the two sliding units 3 and installing an elastic element 2 using the first fixed seat 4. It has a simple structure, few parts, is easy to install and disassemble, and can reduce material costs. Example 3

[0038] See also Figure 3 and Figure 4 Based on Example 1, this embodiment provides a specific implementation plan of a sliding door pulley module, which also includes a second fixing seat 5 fixedly arranged on the shell 1, and more than two sliding units 3 are arranged in a transversely spaced arrangement. The elastic element 2 and the second fixing seat 5 are respectively provided with more than two corresponding to the sliding units 3. The elastic element 2 is configured as a spring having a fixed end 21 and a free end 22. The end of each second fixing seat 5 is provided with a second assembly groove 51 for installing the fixed end 21, and the free end 22 is fixedly connected to the bearing seat 31 corresponding to the sliding unit 3.

[0039] The sliding door pulley module of this embodiment is configured by arranging a plurality of second fixing seats 5 and elastic elements 2 on the shell 1 according to the number of sliding units 3. Each sliding unit 3 is installed and controlled by its own second fixing seat 5 and elastic element 2, forming a modular structure for easy independent maintenance. Example 4

[0040] See also Figure 3 and Figure 4 This embodiment, based on the first, second, or third embodiments, provides a further implementation scheme of a sliding door pulley module, further comprising a bracket 6 movably arranged on the upper side of the shell 1 for connecting the door leaf 7, the upper side of the shell 1 is constructed with a guide positioning portion 13, the guide positioning portion 13 is provided with an inclined guide portion 131 and a horizontal locking portion 132 connected to the guide portion 131, the bracket 6 is provided with a rotatable rolling member 61, the rolling member 61 is provided with a rolling coupling portion 62 that rolls with the guide positioning portion 13, the rolling coupling portion 62 is driven by the lateral movement of the shell 1 to slide upward along the guide portion 131 to the horizontal locking portion 132, and slide downward to the bottom of the guide portion 131. The above-mentioned setting can realize the up and down movement of the bracket 6 relative to the shell 1 by moving the shell 1. When the bracket 6 is connected to the door leaf 7, the shell 1 can be moved to drive the door leaf 7 to rise and then detach it from the track, so that the door leaf 7 can be pushed. When the door leaf 7 is driven to fall, the door leaf 7 can press down the track, so that it is locked and cannot be pushed.

[0041] See also Figure 3 and Figure 4 In the above scheme, it also includes connecting members 14 arranged at the opposite ends of the shell 1, and the connecting members 14 are provided with longitudinally extending connecting holes 141. By arranging connecting members 14 at both ends of the shell 1, the shells 1 of two adjacent pulley modules on the same door leaf 7 can be connected, thereby realizing the synchronous movement of each shell 1 relative to its respective bracket 6. Example 5

[0042] See also Figure 7 This embodiment provides a sliding door system using the sliding door pulley module of embodiment one, embodiment two or embodiment three, which includes a door leaf 7, a support wheel module 8 fixedly arranged on the left and right sides of the bottom of the door leaf 7, and the sliding door pulley module 100 of embodiment one, embodiment two or embodiment three. The support wheel module 8 is equipped with an adjusting wheel group 81 that can swing left and right around an axis X perpendicular to the door leaf 7. The adjusting wheel group 81 includes sliding wheels 811 located on the left and right sides of the axis X. The sliding door pulley module 100 is fixedly arranged between the support wheel modules 8 on the left and right sides of the bottom of the door leaf 7, and at least one thereof is arranged at a horizontal interval. The above-mentioned at least one can be one, two, or more than two, and the number is set according to actual needs.

[0043] The above-mentioned sliding wheel 811 can be adaptively swung and adjusted according to the ups and downs of the track, thereby ensuring that the sliding wheel 811 is in contact with the track, and since this embodiment applies the sliding door pulley module of the utility model, it can effectively ensure that each pulley 33 is in contact with the track, so that each pulley 33 is evenly stressed, and the sliding door is smoother in sliding and less prone to damage. Example 6

[0044] See also Figure 8 This embodiment provides a sliding door system using the sliding door pulley module of embodiment four, which includes a door leaf 7, a support wheel module 8 fixedly arranged on the left and right sides of the bottom of the door leaf 7, the sliding door pulley module 100 of embodiment four, and a handle (the handle is not shown in the figure). The support wheel module 8 is equipped with a support wheel bracket 810 and an adjusting wheel group 81. The support wheel bracket 810 can be swingably arranged on the upper side of the adjusting wheel group 81 around an axis Y perpendicular to the door leaf 7. The adjusting wheel group 81 includes sliding wheels 811 located on the left and right sides of the axis Y. The door leaf 7 is fixedly connected to the support wheel bracket 810.

[0045] The sliding door pulley module 100 is arranged between the support wheel modules 8 on the left and right sides of the bottom of the door leaf 7, and at least one is arranged at a horizontal interval. The above-mentioned at least one can be one, two, or more than two, and the number is set according to actual needs. The bracket 6 is fixedly connected to the door leaf 7, and the sliding door pulley module 100 located adjacent to the support wheel module 8 is fixedly connected to the adjusting wheel group 81 and the shell 1 through a transmission rod 812. The adjacent sliding door pulley modules are fixedly connected to the shell 1 through another transmission rod 812.

[0046] The handle is provided on the door leaf 7, and is used to control the lateral movement of the adjusting wheel group 81 relative to the supporting wheel bracket 810, and to control the lateral movement of the housing 1 relative to the bracket 6, so that the supporting wheel bracket 810 is raised and lowered relative to the adjusting wheel group 81, and the bracket 6 is raised and lowered relative to the housing 1, so that when the supporting wheel bracket 810 and the bracket 6 are raised, the door leaf 7 is driven to rise, so that it can be pushed and pulled when it is off the track, and when it is lowered, the door leaf 7 is driven to lower and press against the track, thereby pressing the track to achieve locking, positioning, and prohibiting pushing and pulling. The control method of the above-mentioned handle is not the invention point of the present utility model. The specific implementation method can refer to the existing Chinese patent document CN202320800612.3.

[0047] Since the present embodiment applies the sliding door pulley module of the present invention, it can effectively ensure that each pulley 33 is in contact with the track, so that each pulley 33 is evenly stressed, and the sliding door is smoother in sliding and less prone to damage.

[0048] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and any modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience of description only and do not constitute any limitation to the present invention.

Claims

1. Sliding door pulley module, characterized in that: include: Housing (1); elastic element (2); The sliding unit (3) comprises: The supporting seat (31) is constructed with first movable inclined slots (311) on opposite sides thereof and extending obliquely upwards towards a side away from the elastic element (2); and second movable inclined slots (313) on opposite sides thereof and extending obliquely upwards towards a side close to the elastic element (2); A pulley (33) is mounted on the bearing seat (31) and is movably engaged with the first movable inclined groove (311) on both sides and the second movable inclined groove (313) on both sides via a supporting shaft (32); The elastic element (2) acts on the bearing seat (31) and the housing (1), so that the pulley (33) can adjust its position along the first movable inclined groove (311) and the second movable inclined groove (313) when a force is applied to the pulley (33).

2. The sliding door pulley module according to claim 1, characterized in that: The housing (1) is respectively configured with blocking portions (11) that abut against the upper side and the lower side of the bearing seat (31).

3. The sliding door pulley module according to claim 2, characterized in that: The housing (1) comprises two side panels (12) arranged at a relative interval on the outside of the bearing seat (31), the second movable inclined slot (313) is provided on the side panels (12), and the upper and lower sides of the side panels (12) are bent inward to form the blocking portion (11).

4. The sliding door pulley module according to claim 1, characterized in that: The bearing seat (31) comprises two side baffles (301) arranged opposite to each other, and a front baffle (302) connecting the two side baffles (301) and located near a side of the elastic element (2); the side baffles (301) and the front baffle (302) enclose a mounting area (312), and the elastic element (2) is fixedly connected to the front baffle (302).

5. The sliding door pulley module according to claim 1, characterized in that: The sliding units (3) are provided with two mirror-symmetrical portions, and further include a first fixing seat (4) fixedly provided between the two sliding units (3), wherein the first fixing seat (4) is penetrated by a first assembly groove (41) extending transversely, and the elastic element (2) is provided as a spring, which is installed in the first assembly groove (41), and the two ends of the spring extend out of the first assembly groove (41) and are connected to the supporting seat (31) of the corresponding sliding unit (3).

6. The sliding door pulley module according to claim 1, characterized in that: It also includes a second fixing seat (5) fixedly arranged on the housing (1), two or more sliding units (3) are arranged in a transversely spaced arrangement, and two or more elastic elements (2) and the second fixing seats (5) are respectively provided in a one-to-one correspondence with the sliding units (3). The elastic element (2) is configured as a spring having a fixed end (21) and a free end (22). The end of each second fixing seat (5) is provided with a second assembly groove (51) for mounting the fixed end (21), and the free end (22) is fixedly connected to the bearing seat (31) corresponding to the sliding unit (3).

7. The sliding door pulley module according to any one of claims 1 to 6, characterized in that: The invention also includes a bracket (6) movably arranged on the upper side of the shell (1) for connecting the door leaf (7), the upper side of the shell (1) is constructed with a guide positioning portion (13), the guide positioning portion (13) is configured with an inclined guide portion (131) and a horizontal locking portion (132) connected to the guide portion (131), the bracket (6) is configured with a rotatable rolling member (61), the rolling member (61) is configured with a rolling coupling portion (62) that rolls with the guide positioning portion (13), and the rolling coupling portion (62) is driven by the lateral movement of the shell (1) to slide upward along the guide portion (131) to the horizontal locking portion (132) and downward to the bottom of the guide portion (131).

8. The sliding door pulley module according to claim 7, characterized in that: It also includes connecting members (14) arranged at opposite ends of the housing (1), and the connecting members (14) are provided with longitudinally extending connecting holes (141).

9. Sliding door system, characterized in that, include: Door leaf (7); A support wheel module (8) is fixedly arranged on the left and right sides of the bottom of the door leaf (7), the support wheel module (8) is equipped with an adjustment wheel group (81) that can swing left and right around an axis (X) perpendicular to the door leaf (7), and the adjustment wheel group (81) includes sliding wheels (811) located on the left and right sides of the axis (X); The sliding door pulley module (100) according to any one of claims 1 to 6 is fixedly arranged between the support wheel modules (8) on the left and right sides of the bottom of the door leaf (7), and at least one thereof is arranged at a transverse interval.

10. Lift-and-slide door system, characterized in that, include: Door leaf (7); A support wheel module (8) is fixedly arranged on the left and right sides of the bottom of the door leaf (7), the support wheel module (8) is provided with a support wheel bracket (810) and an adjusting wheel group (81), the support wheel bracket (810) is arranged on the upper side of the adjusting wheel group (81) so as to be swingable left and right around an axis (Y) perpendicular to the door leaf (7), the adjusting wheel group (81) includes sliding wheels (811) located on the left and right sides of the axis (Y), and the door leaf (7) is fixedly connected to the support wheel bracket (810); The sliding door pulley module (100) according to claim 7 or 8, wherein the sliding door pulley module (100) is arranged between the support wheel modules (8) on the left and right sides of the bottom of the door leaf (7), and at least one thereof is arranged at a lateral interval, the bracket (6) is fixedly connected to the door leaf (7), the sliding door pulley module (100) located adjacent to the support wheel module (8) is fixedly connected to the adjusting wheel group (81) and the housing (1) via a transmission rod (812), and adjacent sliding door pulley modules are fixedly connected to their housings (1) via another transmission rod (812); A handle is provided on the door leaf (7) and is used to control the lateral movement of the adjusting wheel assembly (81) relative to the supporting wheel bracket (810), and to control the lateral movement of the housing (1) relative to the bracket (6), so as to make the supporting wheel bracket (810) rise and fall relative to the adjusting wheel assembly (81), and to make the bracket (6) rise and fall relative to the housing (1).

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