Suspension door friction driving mechanism and suspension door thereof

Abstract

The utility model discloses a suspension door friction driving mechanism and a suspension door thereof. The friction driving mechanism comprises a friction gear box body, a driving motor, a gear box supporting seat and a clutch adjusting assembly. The friction gear box body is installed in an installation beam of the suspension door, a driving friction wheel is arranged on the friction gear box body, the driving motor is in transmission connection with the driving friction wheel, and the driving friction wheel is in sliding friction fit with the inner wall of the installation beam of the suspension door so as to drive the installation beam to move in the length direction of the installation beam. One side of the friction gearbox body is pivoted to the gearbox supporting seat, and the other side of the friction gearbox body adjusts the distance between the driving friction wheel and the inner wall of the mounting beam through a clutch adjusting assembly. The driving friction wheel and other pulley structures are designed on the gearbox body, the original mode that a supporting mechanism and a driving mechanism are connected in a pivoted mode is changed, the supporting mechanism and the driving mechanism are integrated and completely combined in the true sense, vibration and deformation can be effectively restrained, and the transmission stability and the driving efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a suspended door technical field especially relates to a suspended door friction drive mechanism and suspended door thereof. BACKGROUND

[0002] At present, suspended door is more and more favored by people due to the characteristics that door body is suspended and walks, does not need to pre-bury track line, and is not limited by uneven road conditions, and is widely used in schools, parks, factories and various places at present. Suspended door comprises door body, supporting mechanism and drive mechanism in structure;The installation beam is fixed at the bottom of the door body, and the sliding groove is arranged at the bottom of the installation beam;The bottom of the supporting mechanism is installed on the ground below the door body, and the sliding groove of the installation beam is supported on the supporting mechanism, and slides along the length direction of the installation beam under the driving of the drive mechanism.

[0003] In actual use, due to the influence of production process, climate and temperature environment and other factors, the installation beam of most suspended doors is difficult to ensure absolute horizontal parallelism. Therefore, in order to reduce the sliding friction between the installation beam of the suspended door and the supporting mechanism, the supporting mechanism and the drive mechanism are connected through a pivot in the suspended door supporting drive structure disclosed in patent No. CN201620339735.1, and the two are kept in the same parallel plane, so as to improve the stability of the suspended door, avoid the situation of insufficient driving force and overloading of the drive mechanism. However, the above-mentioned supporting mechanism and drive mechanism need to be installed in the installation groove, and the pivot connection mode of the two split bodies increases the assembly difficulty and the structure is complex. In addition, the existing drive mechanism and supporting mechanism are movably connected, the installation space is limited, the gearbox cannot be designed, and the driving efficiency of the drive mechanism is low.

[0004] Therefore, it is necessary to develop an integrated drive mechanism, change the original pivot connection mode of the supporting mechanism and the drive mechanism, realize the integrated design of the supporting mechanism and the drive mechanism, simplify the assembly, and improve the transmission stability and driving efficiency of the suspended door. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a suspended door friction drive mechanism.

[0006] The second purpose of the utility model is to provide a suspended door.

[0007] One of the purposes of the utility model is achieved by the following technical scheme: a suspended door friction drive mechanism, comprising a friction gearbox main body, a drive motor, a gearbox supporting seat, a clutch adjusting assembly;

[0008] The friction gearbox body is installed in the installation beam of the suspension door, the friction gearbox body is provided with a driving friction wheel, the driving motor is in transmission connection with the driving friction wheel, the driving friction wheel is in sliding friction cooperation with the inner wall of the installation beam of the suspension door to drive the installation beam to move along the length direction of the installation beam.

[0009] One side of the friction gearbox body is pivoted on the gearbox supporting seat, and the other side of the friction gearbox body adjusts the distance between the driving friction wheel and the inner wall of the installation beam through the clutch adjusting assembly.

[0010] Optionally, the driving friction wheel comprises at least one group of driving wheels, and each group of driving wheels is distributed on the same side of the friction gearbox body or is correspondingly distributed on the front and back sides of the friction gearbox body.

[0011] Each group of driving wheels comprises at least one upper driving wheel and one lower driving wheel, the upper driving wheel is in sliding friction cooperation with the top wall of the installation beam, and the lower driving wheel is in sliding friction cooperation with the bottom wall of the installation beam.

[0012] Optionally, the friction gearbox body is further provided with a plurality of first driven friction wheels, the first driven friction wheels are in rolling cooperation with the inner wall of the installation beam, the first driven friction wheels are installed on one side or both sides of the friction gearbox body, and the rotation shafts of the first driven friction wheels are parallel to the rotation shaft of the driving friction wheel.

[0013] Or / and the friction gearbox body is further provided with a plurality of second driven friction wheels, the second driven friction wheels are in rolling cooperation with the inner wall of the installation beam, the second driven friction wheels are installed on one side or both sides of the friction gearbox body, and the rotation shafts of the second driven friction wheels are perpendicular to the rotation shaft of the driving friction wheel.

[0014] Optionally, one side of the friction gearbox body is pivoted on the gearbox supporting seat through a pivot shaft, and the pivot shaft and the rotation shaft of one of the first driven friction wheels share the same shaft body.

[0015] Optionally, the driving motor is in transmission connection with the driving friction wheel through a gear transmission assembly and a linkage worm.

[0016] Optionally, the clutch adjusting assembly comprises a connecting arm, a lifting screw, a first nut, and a second nut; the connecting arm is fixedly extended from the gearbox support seat; the first nut and the second nut are threadedly connected in sequence on the lifting screw; the lifting screw is vertically arranged in the connecting arm and is fixed on the connecting arm by the first nut; the connecting arm is further provided with a nut limiting accommodation cavity for mounting the second nut; the second nut is limited in the nut limiting accommodation cavity of the connecting arm; the top of the lifting screw is pivotally connected with the friction gearbox body; and the bottom of the lifting screw is a rotating adjusting end, and the distance between the driving friction wheel and the inner wall of the mounting beam is adjusted by rotating the rotating adjusting end of the lifting screw.

[0017] Optionally, the clutch adjusting assembly further comprises a connecting block fixed horizontally on the connecting arm; the connecting block is provided with a first limiting hole and a second limiting hole coaxially arranged with the first limiting hole; the connecting arm is provided with a third limiting hole coaxially arranged with the first limiting hole and having the same diameter for allowing the lifting screw to be arranged therethrough; and the second limiting hole has a larger diameter than the first limiting hole for mounting the second nut; the diameters of the first limiting hole, the second limiting hole, and the third limiting hole are all larger than the diameter of the second nut, so as to provide a fine adjustment space for the horizontal displacement of the lifting screw.

[0018] Optionally, the clutch adjusting assembly further comprises a rotating handle fixedly connected with the rotating adjusting end of the lifting screw, so as to rotate the lifting screw along the central axis of the rod body.

[0019] Optionally, the clutch adjusting assembly further comprises a rotating support, and the lifting screw is fixed on the rotating support; and the rotating support is pivotally mounted on the friction gearbox body.

[0020] The second purpose of the utility model is achieved by the following technical scheme: a suspended door, comprising a door body, a mounting beam arranged at the bottom of the door body, and at least one set of suspended door friction driving mechanisms as described above arranged in the mounting beam.

[0021] Compared with the prior art, the utility model has the beneficial effects that:

[0022] 1、The application improves the wave box structure of the driving mechanism, designs the driving pulley structure such as the driving friction wheel on the wave box body, changes the original supporting mechanism and the driving mechanism through the pivotal connection, realizes the integration of the supporting mechanism and the driving mechanism in the true sense (such as through the rigid connection or the integrated frame design), the integrated structure reduces the movable parts, the overall rigidity is improved, the vibration and deformation can be effectively inhibited, and the suspended door is especially suitable for heavy load or high frequency operation. The above structure improvement is beneficial to the structure simplification and the synchronization optimization, the contact pressure distribution of each friction wheel is more uniform, the friction force transmission is more stable, and the "slip" or "overload" risk is reduced.

[0023] In addition, the overall maintenance is more simplified: the pivotal connection parts between the original supporting mechanism and the driving mechanism are reduced, the production and maintenance cost and the failure rate are reduced. The integrated design can compress the structure volume, facilitate the installation beam internal layout optimization, and greatly improve the space utilization rate.

[0024] 2、After the optimization design of the integrated composite structure, a plurality of driving wheels can be designed on the wave box body, preferably the driving wheels sliding with the top wall and the bottom wall of the installation beam are designed and installed at the same time, the contact friction force with the installation beam can be further improved, and the friction transmission effect is improved.

[0025] 3、The application distributes two groups of driving wheels on the front and rear sides of the friction wave box body through design, and the plurality of driving friction wheels are distributed on the installation beam in different positions, which are basically uniformly distributed in multiple directions of the installation beam, which can effectively distribute the contact pressure between the friction wheels, further improve the stability of the friction transmission, and further reduce the "slip" or "overload" risk. And the plurality of friction wheels arranged on the same main body can be kept on the same parallel plane, improving the stability and durability of the suspended door.

[0026] 4、In order to further improve the stability of the installation beam in operation, the application designs a plurality of driven friction wheels, specifically including a first driven friction wheel and a second driven friction wheel, by designing the installation position, the top wall, and / or the bottom wall, and / or the side wall of the installation beam can be contacted in all directions, the contact pressure distribution is more uniform, the friction force transmission is more stable, so that the operation of the installation beam is more smooth. Similarly, and the plurality of friction wheels arranged on the same main body can be kept on the same parallel plane, improving the stability and durability of the suspended door.

[0027] 5、The clutch adjusting assembly of the application has a clutching effect. When the lifting screw is rotated and the lifting screw moves upward relative to the connecting arm, the top of the lifting screw presses upward against the friction gearbox body. Since the other side of the friction gearbox body is pivoted on the gearbox support seat by a pivot, the other side of the friction gearbox body is lifted as a center of rotation. At this time, the driving friction wheel is slightly lifted away from the mounting beam, so that the door body can be manually freely opened and closed for maintenance, adjustment and other scenes.

[0028] When the lifting screw is rotated in the opposite direction, the lifting screw moves downward relative to the connecting arm, so that the top of the lifting screw pulls downward against the friction gearbox body. Since the other side of the friction gearbox body is pivoted on the gearbox support seat by a pivot, the other side of the friction gearbox body is pulled downward as a center of rotation. At this time, the driving friction wheel is pressed against the mounting beam, so as to increase the sliding friction between the mounting beam and the driving mechanism, maintain stable friction between the two, and make the movement of the mounting beam more stable, which is suitable for the scene of adjusting the friction after the door body slips.

[0029] 6、The connecting block designed in the clutch adjusting assembly mainly solves the installation problem of the second nut, provides a certain horizontal displacement fine adjustment space for the lifting screw, and improves the stability and durability of the suspended door.

[0030] 7、Since the clutch adjusting assembly is usually installed at the bottom of the door body, the space between the clutch adjusting assembly and the bottom surface is narrow. The application adds a rotating handle to the clutch adjusting assembly. The rotating handle extends from the mounting beam, which is convenient for maintenance personnel to hold and improves the convenience of using the clutch adjusting assembly.

[0031] 8、The driving motor selects gear speed change assemblies of different sizes according to the specific application scene of the suspended door, and is sequentially connected with the linkage worm and the driving friction wheel in transmission. Through the speed ratio adjustability improvement and linkage improvement of the gearbox, the driving efficiency is greatly improved, the bearing and friction driving are integrated, the components are productized, the product quality and installation efficiency are improved, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a structure schematic view of the suspended door friction driving mechanism of the preferred embodiment 1 of the application.

[0033] Figure 2 It is a structure schematic view of the suspended door friction driving mechanism of the preferred embodiment 1 of the application. Figure 1 It is an enlarged schematic view of position A in the structure schematic view.

[0034] Figure 3 It is a sectional schematic view of the suspended door friction driving mechanism of the preferred embodiment 1 of the application.

[0035] Figure 4 It is an enlarged schematic view of position B in the sectional schematic view. Figure 3 ​

[0036] Figure 5 As Figure 3 the enlarged view of the middle C;

[0037] Figure 6 As the structure schematic view of another angle of the friction drive mechanism of the suspended door of the preferred embodiment 1 of the utility model;

[0038] Figure 7 As the structure schematic view of the suspended door of the preferred embodiment 2 of the utility model;

[0039] Figure 8 As Figure 7 the enlarged view of the middle D;

[0040] Figure 9 As Figure 8 the cross-sectional schematic view.

[0041] In the figure: 100, the friction drive mechanism of the suspended door; 1, the main body of friction gearbox; 11, driving friction wheel; 111, upper drive wheel; 112, lower drive wheel; 12, first driven friction wheel; 13, pivot; 14, second driven friction wheel; 2, drive motor; 21, output shaft; 3, gearbox support seat; 4, clutch adjusting assembly; 41, connecting arm; 411, nut limiting cavity; 412, third limiting hole; 42, lifting screw; 43, first nut; 44, second nut; 45, connecting block; 451, first limiting hole; 452, second limiting hole; 46, rotating handle; 47, fastener; 48, rotating bracket; 49, pivot; 5, gear shifting assembly; 51, first gear; 52, second gear; 53, third gear; 54, fourth gear; 6, linkage worm;

[0042] 200, suspended door; 201, door body; 202, mounting beam. DETAILED DESCRIPTION

[0043] In the following, the utility model is further described in combination with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict.

[0044] Embodiment 1

[0045] As Figures 1-6 shown, a kind of friction drive mechanism of suspended door 100, including friction gearbox main body 1, drive motor 2, gearbox support seat 3, clutch adjusting assembly 4;

[0046] In practical applications, the wave box support seat 3 is fixedly installed on a gantry of a suspended door or on the ground, and is used for supporting the entire mounting beam. The friction wave box body 1 is installed in the mounting beam of the suspended door, and the friction wave box body 1 is provided with a driving friction wheel 11. The driving motor 2 is in transmission connection with the driving friction wheel 11. The driving friction wheel 11 is in sliding frictional connection with the inner wall of the mounting beam of the suspended door, so as to drive the mounting beam to move along the length direction of the mounting beam.

[0047] One side of the friction wave box body 1 is pivotally connected to the wave box support seat 3 through a pivot 13. The distance between the other side of the friction wave box body 1 and the inner wall of the mounting beam is adjusted through the clutch adjusting assembly 4.

[0048] The transmission principle of the driving mechanism in the suspended door is as follows: the body part of the driving motor 2 is fixedly connected to the driving friction wheel 11 which is in synchronous connection with the rotating shaft of the driving motor 2. The driving friction wheel 11 is in frictional connection with the top wall and / or the bottom wall of the mounting beam. The driving motor 2 is started. Under the driving of the driving motor 2, the driving friction wheel 11 starts to rotate. Since the driving friction wheel 11 is in frictional connection with the top wall and / or the bottom wall of the mounting beam, the mounting beam moves along the length direction of the mounting beam relative to the driving friction wheel 11 in the process of rotation of the driving friction wheel 11.

[0049] The wave box structure of the driving mechanism is improved. The driving friction wheel 11 and other pulley structures are designed on the wave box body. The original supporting mechanism and the driving mechanism are connected through pivots. The supporting mechanism and the driving mechanism are integrated (for example, through rigid connection or integrated frame design) in a true sense. The integrated structure reduces the number of movable parts and improves the overall rigidity. The vibration and deformation can be effectively inhibited. The structure is especially suitable for suspended doors with heavy load or high frequency operation. The above structure improvement is beneficial to structure simplification and synchronization optimization. The contact pressure distribution of each friction wheel is more uniform. The transmission of friction is more stable. The risk of “slip” or “overload” is reduced.

[0050] In addition, the overall maintenance is more simplified. The pivot connection parts between the original supporting mechanism and the driving mechanism are reduced. The maintenance cost and the failure rate are reduced. The integrated design can compress the structure volume. The internal layout of the mounting beam is optimized. The space utilization rate is greatly improved.

[0051] As a further preferred scheme, the driving friction wheel 11 at least includes a group of driving wheels. Each group of driving wheels is distributed on the same side of the friction wave box body or is correspondingly distributed on the front and back sides of the friction wave box body.

[0052] The driving wheel at least includes an upper driving wheel 111 and a lower driving wheel 112. The upper driving wheel 111 is in sliding frictional connection with the top wall of the mounting beam. The lower driving wheel 112 is in sliding frictional connection with the bottom wall of the mounting beam.

[0053] Through integrated composite design, one or more drive wheels can be designed on the main body of the gearbox according to the power output requirements of the suspended door. Preferably, drive wheels that slide in conjunction with the top and bottom walls of the mounting beam can be designed simultaneously in space, which can further improve the contact friction with the mounting beam and improve the friction transmission effect.

[0054] This application designs two sets of drive wheels correspondingly distributed on the front and rear sides of the friction gearbox body 1, with multiple active friction wheels 11 distributed at different positions, basically evenly distributed in multiple directions above, below, front, and rear of the mounting beam. This effectively distributes the contact pressure between the friction wheels, further improving the stability of the friction transmission and reducing the risk of slippage or overload. Furthermore, placing multiple friction wheels on the same body ensures they remain on the same parallel plane, improving the stability and durability of the suspended door.

[0055] As a further preferred embodiment, one side of the friction gearbox body 1 is pivotally connected to the gearbox support 3 via a pivot 13, which shares the same shaft as the shaft of one of the first driven friction wheels 12.

[0056] This application adopts a shared shaft design, which simplifies the structure. At the same time, it makes the first driven friction wheel and the drive wheel diagonally distributed, which improves space utilization and reduces the mold cost of the friction gearbox body.

[0057] As a further preferred embodiment, the friction gearbox body 1 is also provided with a plurality of first driven friction wheels 12, the first driven friction wheels 12 rollingly engaging with the inner wall of the mounting beam; the plurality of first driven friction wheels 12 are installed on one or both sides of the friction gearbox body 1, and the rotation axis of the first driven friction wheels 12 is parallel to the rotation axis of the driving friction wheel 11;

[0058] The friction gearbox body 1 may also be provided with a plurality of second driven friction wheels 14, which roll in cooperation with the inner wall of the mounting beam. The plurality of second driven friction wheels 14 are mounted on one or both sides of the friction gearbox body 1, with the rotation axis of the second driven friction wheels 14 perpendicular to the rotation axis of the driving friction wheel 11. The second driven friction wheels 14 can be mounted on both sides of the friction gearbox body 1 respectively using two mounting brackets, and / or mounted on the side of the friction gearbox body 1 by mounting the second driven friction wheels 14 on both ends of the same mounting bracket. These two mounting methods can be selected and assembled according to actual usage, and will not be elaborated here.

[0059] Specifically in the embodiment, to further improve the stability of the installation beam operation, a plurality of driven friction wheels can be designed, specifically including a first driven friction wheel 12 and a second driven friction wheel 14, which are designed to be installed at positions capable of contacting the top wall, the bottom wall and / or the side wall of the installation beam in all directions, and the contact pressure distribution is more uniform, and the transmission of friction is more stable, so that the operation of the installation beam is more smooth. Similarly, the plurality of friction wheels arranged on the same body can be kept on the same parallel plane, improving the stability and durability of the suspended door.

[0060] As a further preferred solution, the driving motor 2 is in transmission connection with the driving friction wheel 11 through a gear transmission assembly 5 and a linkage worm 6.

[0061] The gear transmission assembly 5 can be a one-stage transmission or a multi-stage transmission, which is designed according to the transmission requirements in the actual application scene. The output shaft 21 of the driving motor 2 is in transmission connection with the linkage worm 6 after adjusting the speed through the gear transmission assembly 5. In the present application, a plurality of driving friction wheels 11 are installed on the linkage worm 6 and are driven to rotate synchronously by the linkage worm 6. Through the adjustability of the transmission ratio of the gearbox and the linkage improvement, the driving force efficiency is greatly improved, the load bearing and friction driving are integrated, the component productization is improved, the product quality and installation efficiency are improved, and the production cost is reduced.

[0062] Taking the gear transmission assembly of the present application as an example, the transmission output process of the driving mechanism is described. The gear transmission assembly 5 at least includes a first gear 51, a second gear 52, a third gear 53 and a fourth gear 54, wherein the first gear 51, the second gear 52, the third gear 53 and the fourth gear 54 are sequentially meshed with each other. The output shaft 21 of the driving motor 2 directly drives the first gear 52 to rotate, and the gears are meshed with each other. Each gear has a different number of teeth, and the rotation speed is reduced and the torque is amplified or the rotation speed is increased and the torque is reduced through the meshing of a plurality of gears. The required output characteristics are calculated through the transmission ratio between the gears.

[0063] As a further preferred solution, the clutch adjusting assembly 4 comprises a connecting arm 41, a lifting screw 42, a first nut 43, a second nut 44; the connecting arm 41 is fixedly extended from the gearbox support seat 3, the first nut 43 and the second nut 44 are threadedly connected on the lifting screw 42 in sequence, the lifting screw 42 is vertically arranged in the connecting arm 41 and is fixed on the connecting arm by the first nut 43; the connecting arm 41 is further provided with a nut limiting accommodation cavity 411 for mounting the second nut 44, and the second nut 44 is limited in the nut limiting accommodation cavity 411 of the connecting arm 41; the top of the lifting screw 42 is pivotally connected with the friction gearbox body, and the bottom of the lifting screw 42 is a rotating adjusting end, and the distance between the driving friction wheel 11 and the inner wall of the mounting beam is adjusted by rotating the rotating adjusting end of the lifting screw 42.

[0064] In the present application, when the lifting screw 42 is rotated and the lifting screw 42 moves upward relative to the connecting arm 41, the top of the lifting screw 42 pushes upward the friction gearbox body 1, and since the other side of the friction gearbox body 1 is pivotally connected with the gearbox support seat 3 through the pivot 13, the other side of the friction gearbox body 1 is lifted as a center rotating point, at this time, the driving friction wheel 11 is slightly lifted away from the mounting beam, so that the door body can be manually freely pushed and pulled to open and close, for use in scenes such as maintenance, adjustment, etc.

[0065] When the lifting screw 42 is rotated in the opposite direction and the lifting screw 42 moves downward relative to the connecting arm 41, the top of the lifting screw 42 pulls downward the friction gearbox body 1, and since the other side of the friction gearbox body 1 is pulled downward as a center rotating point, at this time, the driving friction wheel 11 is pressed against the mounting beam, for increasing the sliding friction between the mounting beam and the driving mechanism, maintaining stable friction therebetween, so that the movement of the mounting beam is more stable, which is suitable for scenes of adjusting friction after the door body slips.

[0066] As a further preferred solution, the clutch adjusting assembly 4 further comprises a connecting block 45, which is fixed horizontally on the connecting arm 41; the connecting block 45 is provided with a first limiting hole 451 and a second limiting hole 452 coaxially arranged with the first limiting hole 451, the connecting arm 41 is provided with a third limiting hole 412 coaxially arranged with the first limiting hole 451 and having the same diameter, for allowing the lifting screw 42 to pass through and be mounted, and the second limiting hole 452 has a larger diameter than the first limiting hole 451, for mounting the second nut 44; the diameters of the first limiting hole 451, the second limiting hole 452 and the third limiting hole 412 are all larger than the diameter of the second nut 44, to provide a fine adjustment space for the horizontal displacement of the lifting screw 42.

[0067] After the connecting block 45 and the connecting arm 41 are fixedly installed by fasteners such as bolts 47, since the diameters of the first limiting hole 451 and the third limiting hole 412 are smaller than the diameter of the second limiting hole 452, the cavity generated by the second limiting hole 452 is the nut limiting and receiving cavity 411. The design of the connecting block 45 mainly solves the installation problem of the second nut 44, and also provides a certain horizontal displacement fine adjustment space for the lifting screw 42, thereby improving the stability and durability of the suspended door.

[0068] As a further preferred embodiment, the clutch adjustment assembly 4 also includes a rotary handle 46, which is fixedly connected to the rotation adjustment end of the lifting screw 42 to rotate the lifting screw 42 along the central axis of the rod.

[0069] Since the clutch adjustment assembly 4 is usually installed at the bottom of the door body, and the space between it and the bottom surface is narrow, this application adds a rotating handle 46 to the clutch adjustment assembly 4. The rotating handle 46 extends from the mounting beam, which makes it convenient for maintenance personnel to hold, improves the ease of use of the clutch adjustment assembly 4, and saves more effort.

[0070] As a further preferred embodiment, the clutch adjustment assembly 4 also includes a rotating bracket 48, the lifting screw 42 is fixed on the rotating bracket 48, and the rotating bracket 48 is mounted on the friction gearbox body 1 via a pivot 49.

[0071] The design of the rotating bracket 48 in this application simplifies the installation of the clutch adjustment assembly 4 and the structure of the lifting screw 42. Specifically, the rotating bracket 48 can be a separate accessory or it can be integrally formed with the lifting screw 42.

[0072] Example 2

[0073] like Figures 7-9 As shown, a suspended door 200 includes a door body 201, a mounting beam 202 disposed at the bottom of the door body, and at least one set of suspended door friction drive mechanisms 100 as described above, installed within the mounting beam 202. The specific structure of the suspended door friction drive mechanism 100 is described in Embodiment 1 and the accompanying drawings. Figures 1-6 Based on the structural functions and advantages of the suspension door friction drive mechanism 100, the suspension door also has the same beneficial effects, which will not be elaborated here.

[0074] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A suspended door friction drive mechanism, characterized by, The friction gear box body, the driving motor, the gear box support seat and the clutch adjusting assembly are included. The friction gear box body is installed in the installation beam of the suspension door, the friction gear box body is provided with a driving friction wheel, the driving motor is in transmission connection with the driving friction wheel, the driving friction wheel is in sliding friction cooperation with the inner wall of the installation beam of the suspension door to drive the installation beam to move along the length direction of the installation beam. One side of the friction gear box body is pivoted on the gear box support seat, and the other side of the friction gear box body adjusts the distance between the driving friction wheel and the inner wall of the installation beam through the clutch adjusting assembly.

2. The suspended door friction drive mechanism of claim 1, wherein, The driving friction wheel includes at least one group of driving wheels, and each group of driving wheels is distributed on the same side of the friction gear box body or on the front and back sides of the friction gear box body. Each group of driving wheels includes at least one upper driving wheel and one lower driving wheel, the upper driving wheel is in sliding friction cooperation with the top wall of the installation beam, and the lower driving wheel is in sliding friction cooperation with the bottom wall of the installation beam.

3. A suspended door friction drive mechanism as claimed in claim 2, wherein, The friction gear box body is further provided with a plurality of first driven friction wheels, the first driven friction wheels are in rolling cooperation with the inner wall of the installation beam, the first driven friction wheels are installed on one side or both sides of the friction gear box body, and the rotation shafts of the first driven friction wheels are parallel to the rotation shaft of the driving friction wheel. Or / and the friction gear box body is further provided with a plurality of second driven friction wheels, the second driven friction wheels are in rolling cooperation with the inner wall of the installation beam, the second driven friction wheels are installed on one side or both sides of the friction gear box body, and the rotation shafts of the second driven friction wheels are perpendicular to the rotation shaft of the driving friction wheel.

4. The suspended door friction drive mechanism of claim 3, wherein, One side of the friction gear box body is pivoted on the gear box support seat through a pivot shaft, and the pivot shaft shares the same shaft body with the rotation shaft of one of the first driven friction wheels.

5. Suspended door friction drive mechanism according to any of claims 1-4, characterized in that The driving motor is in transmission connection with the driving friction wheel through a gear transmission assembly and a linkage worm.

6. Suspended door friction drive mechanism according to any of claims 1-4, characterized in that The clutch adjusting assembly includes a connecting arm, a lifting screw, a first nut and a second nut, the connecting arm is fixedly extended from the gear box support seat, the first nut and the second nut are threadedly connected on the lifting screw in sequence, the lifting screw is vertically arranged in the connecting arm and is fixed on the connecting arm by the first nut, the connecting arm is further provided with a nut limiting accommodating cavity for mounting the second nut, the second nut is limited in the nut limiting accommodating cavity of the connecting arm, the top of the lifting screw is pivoted on the friction gear box body, and the bottom of the lifting screw is a rotating adjusting end, the distance between the driving friction wheel and the inner wall of the installation beam is adjusted by rotating the rotating adjusting end of the lifting screw.

7. A suspended door friction drive mechanism as claimed in claim 6, wherein, The clutch adjusting assembly further comprises a connecting block fixed horizontally on the connecting arm; the connecting block is provided with a first limiting hole and a second limiting hole coaxial with the first limiting hole; the connecting arm is provided with a third limiting hole coaxial with the first limiting hole and having the same diameter for the lifting screw to pass through and be installed; the second limiting hole has a larger diameter than the first limiting hole for the second nut to be installed; the diameters of the first limiting hole, the second limiting hole and the third limiting hole are all larger than the diameter of the second nut to provide a fine adjustment space for the horizontal displacement of the lifting screw.

8. The suspended door friction drive mechanism of claim 6, wherein, The clutch adjusting assembly further comprises a rotating handle fixedly connected to the rotating adjusting end of the lifting screw to rotate the lifting screw along the central axis of the rod body.

9. The suspended door friction drive mechanism of claim 6 wherein, The clutch adjusting assembly further comprises a rotating support, and the lifting screw is fixed on the rotating support, and the rotating support is installed on the friction wave box body through a pivot.

10. A suspended door characterized by, The door body, the mounting beam arranged at the bottom of the door body, and the at least one set of the friction drive mechanism of the suspended door according to any one of claims 1-9 mounted in the mounting beam.

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