A press-fit device for roller tube sealing cover

Abstract

The present invention discloses a press-fitting device for a sealing cover of a roller tube body, comprising an outer bracket and an inner bracket, wherein the outer bracket comprises two groups of symmetrically arranged outer plates, the upper portion of the outer plates being provided with outer slots; the outer sides of the outer slots on both sides are provided with press-fitting components; the inner bracket comprises two groups of symmetrically arranged inner plates, the upper portion of the first connecting plate being provided with a driving mechanism, the upper end of the driving mechanism being connected to the second connecting plate; the inner plates being provided with inner slots, and the inner slots and the outer slots being arranged at intervals; a feed conveyor belt being provided on one side of the outer bracket, and a discharge conveyor belt being provided on the other side of the outer bracket. The present invention utilizes the inner bracket and the outer bracket to realize the transfer operation of different press-fitting processes of the roller tube body, and by providing a feed conveyor belt on one side of the outer bracket and a discharge conveyor belt on the other side of the outer bracket, the roller tube body is automatically loaded and unloaded, thereby avoiding manual handling of the rollers and reducing the labor intensity of workers.

Description

Technical Field

[0001] The invention belongs to the field of roller assembly auxiliary equipment, and in particular relates to a roller tube body sealing cover press-fitting device. Background Art

[0002] The roller is one of the important and indispensable components of the conveyor. Its function is to weigh and roll the conveyor belt. The structure of the roller itself is relatively simple, but due to the generally harsh working environment in which it is located, such as mining conveyors, after long-term use of the roller, external dust, water vapor, etc. are easy to enter the roller tube body, causing serious wear and corrosion of the bearing, and thus making the roller fail. In order to solve this technical problem, it is usually necessary to press a sealing ring into the outside of the bearing at both ends of the roller tube body, and press a dust cover into the outside of the sealing ring.

[0003] At present, there are two ways to press the sealing ring and the dust cover. One is manual pressing, that is, the sealing ring is first pressed into both ends of the roller tube body, the bearing end is sealed with the sealing ring, and then the dust cover is pressed to one side of the sealing ring. This pressing method is affected by the workers' experience and operating techniques. The uniformity of the force applied to the sealing ring and the dust cover cannot be guaranteed when the sealing ring and the dust cover are pressed, and thus the consistency of the finished roller cannot be guaranteed. In addition, the efficiency of manual pressing is not high.

[0004] Another method is to use mechanical press-fitting, placing the roller tube body on a V-shaped positioning block and setting a hydraulic cylinder or air cylinder on both sides of the positioning block. The hydraulic cylinder or air cylinder is used to press-fit the sealing ring and dust cover at one time. This not only ensures the consistency of the roller forming, but also improves the efficiency of roller press-fitting. However, each press-fitting of a roller requires manual loading and unloading once, and for rollers produced in batches, the labor intensity of workers is still relatively high. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a roller tube body sealing cover press-fitting device to solve the problem of high labor intensity during press-fitting of the existing roller sealing cover.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] The lifting mechanism is a pair of locking plate, and the locking plate is connected with the locking plate by a locking cam, and the locking plate is connected with the support frame of the lifting mechanism, and the support frame is connected with the support frame of the lifting mechanism.

[0008] Furthermore, the first connecting plate and the second connecting plate are both split structures, a first sleeve is provided between the outer plates on both sides, and the first connecting plate is gap-inserted inside the first sleeve; a second sleeve is provided between the inner plates on both sides, and the second connecting plate is gap-inserted inside the second sleeve, and both ends of the first sleeve and the second sleeve are threadedly connected with fastening bolts.

[0009] Furthermore, a guide groove is provided on the outer plate, a guide plate is provided on the inner plate, and the guide plate is slidably installed in the guide groove.

[0010] Furthermore, the pressure cover assembly includes a fixed cover, which is fixedly installed on the outside of the outer plate, and a plurality of guide sleeves are provided at one end of the lower part of the fixed cover, in which a pressure rod is slidably connected, and a pressure head is provided at one end of the pressure rod, and a first connecting rod is hinged at the other end of the pressure rod; the other end of the fixed cover is hinged to an articulated frame, and the articulated frame is an L-shaped structure, and the fixed cover is hinged to the middle part of the articulated frame, and the other end of the first connecting rod is hinged to one end of the articulated frame, and a linkage rod is also hinged on the articulated frame, and the lower end of the linkage rod is hinged to the guide plate.

[0011] Furthermore, the linkage rod includes a first stud and a threaded sleeve threadedly connected to both sides of the first stud, and the threads on both sides of the first stud have opposite rotation directions, wherein the threaded sleeve at one end is hinged to the guide plate, and the threaded sleeve at the other end is hinged to the articulated frame.

[0012] Furthermore, limiting plates are provided on both sides of the outer plate, and a plurality of operating holes are provided on the limiting plates, and the operating holes correspond to the positions of the external card slots.

[0013] Furthermore, mounting holes are provided at both ends of the outer plate, and threaded rods are fixedly connected at both ends of the limit plate. The threaded rods are gap-installed in the mounting holes, and an adjusting nut is threadedly connected to the threaded rod. A spring is provided on the outside of the threaded rod, and one end of the spring is against the limit plate, and the other end of the spring is against the outer plate.

[0014] Furthermore, the limiting plate is provided with a plurality of sealing cover guide grooves, and the sealing cover guide grooves are installed on one side of the operating hole, the sealing ring and the dust cover are placed in the sealing cover guide grooves, and the width of the sealing cover guide grooves is greater than the thickness of the sealing ring or the dust cover, and less than twice the thickness of the sealing ring or the dust cover.

[0015] Furthermore, the pressure head includes a connecting disk, a second stud is rotatably connected to the central axis of the connecting disk, the second stud is symmetrically threaded with screw sleeves on both sides, the outer ring of the screw sleeve is hinged with a number of second connecting rods, the connecting disk is provided with a number of adjustment grooves, a connecting block is slidably connected in the adjustment groove, one end of the second connecting rod is hinged to the connecting block, and a top rod is provided on the connecting block.

[0016] Furthermore, the push rod is threadedly connected to the connecting block.

[0017] The beneficial effects of the present invention are:

[0018] 1) The present invention utilizes an inner bracket and an outer bracket to realize the transfer operation of the roller tube body in different pressing processes, and by arranging a feeding conveyor belt on one side of the outer bracket and a discharging conveyor belt on the other side of the outer bracket, the roller tube body is automatically loaded and unloaded, avoiding manual handling of the roller and reducing the labor intensity of workers.

[0019] 2) The distance between the inner bracket and the outer bracket is adjustable to adapt to the press-fitting of roller tube sealing covers of different lengths.

[0020] 3) The gland assembly is linked to the inner bracket through a linkage rod. When the inner bracket moves upward, the pressure rod of the gland assembly moves outward. When the inner bracket moves downward, the pressure rod of the gland assembly moves inward to press the sealing ring and the dust cover. Only one driving mechanism is used to realize the transfer of the roller tube body and the gland operation after transfer.

[0021] 4) The linkage rod includes a first stud and a threaded sleeve threadedly connected to both sides of the first stud, which facilitates adjustment of the overall length of the linkage rod, thereby adjusting the sliding distance of the pressure rod and further adjusting the pressing depth of the sealing ring and the dust cover.

[0022] 5) Telescopic and adjustable limit plates are set on both sides of the outer plate. The limit plates limit the two ends of the roller tube body to ensure the accuracy of the roller tube body during transfer.

[0023] 6) Several sealing cover guide grooves are set on the limit plate, and the sealing rings and dust covers are placed in the sealing cover guide grooves. When the sealing rings or dust covers are pressed into the two ends of the roller tube body, the pressure rod slides outward and withdraws from the operation hole. At this time, the sealing rings or dust covers in the sealing cover guide grooves fall to the bottom, preparing for the next pressing, further reducing the labor intensity of the workers.

[0024] 7) The pressure head includes a connecting plate, on which a position-adjustable connecting block is provided. The positions of the screw sleeves on both sides are adjusted by rotating the second stud, thereby adjusting the position of the connecting block in the adjustment groove, thereby realizing the adjustment of the center distance between the push rod and the connecting plate. It is suitable for pressing and fitting sealing rings and dust covers of different diameters. In addition, the push rod is threadedly connected to the connecting block, which further broadens the depth range of the pressure head for pressing and fitting sealing rings and dust covers. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Attachment Figure 1 This is a diagram showing the use status of a roller tube body sealing cover press-fitting device of the present invention.

[0026] Attachment Figure 2 The present invention is a schematic diagram of the assembly of an outer bracket and an inner bracket in a press-fitting device for a roller tube body sealing cover.

[0027] Attachment Figure 3 The figure is a side view of a press-fitting device for a roller tube body sealing cover of the present invention.

[0028] Attachment Figure 4 The figure is a side view of an outer bracket and an inner bracket in a press-fitting device for a sealing cover of a roller tube body according to the present invention.

[0029] Attachment Figure 5 It is a schematic diagram of a gland assembly in a roller tube body sealing cover press-fitting device of the present invention.

[0030] Attachment Figure 6 The present invention is a schematic diagram of a pressure head structure in a press-fitting device for a roller tube body sealing cover.

[0031] Attachment Figure 7 The present invention is a schematic diagram of a limit plate structure in a roller tube body sealing cover press-fitting device.

[0032] In the figure: 1. Outer bracket; 101. Outer plate; 102. First connecting plate; 103. First sleeve; 104. Guide groove; 105. Outer slot; 106. Mounting hole; 2. Inner bracket; 201. Inner plate; 202. Second connecting plate; 203. Second sleeve; 204. Guide plate; 205. Inner slot; 3. Stop plate; 301. Operating hole; 302. Threaded rod; 303. Adjusting nut; 304. Spring; 305. Sealing cover guide Groove; 4. Driving mechanism; 5. Gland assembly; 501. Fixed cover; 502. Guide sleeve; 503. Pressure rod; 504. First connecting rod; 505. Articulated frame; 506. Linkage rod; 5061. Threaded sleeve; 5062. First stud; 6. Pressure head; 601. Connecting plate; 602. Adjusting groove; 603. Second stud; 604. Threaded sleeve; 605. Connecting block; 606. Second connecting rod; 607. Push rod; 7. Roller tube body. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-7 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, specific orientation structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0035] A device for pressing a sealing cover of a roller tube body, comprising an outer bracket 1 and an inner bracket 2, wherein the outer bracket 1 comprises two groups of symmetrically arranged outer plates 101, the lower parts of the outer plates 101 on both sides are connected by a first connecting plate 102, and the upper parts of the outer plates 101 are provided with outer card grooves 105, and the outer card grooves 105 are serrated. The number of the outer card grooves 105 is determined according to the process of pressing the roller sealing cover. For example, when the roller tube body 7 only needs to press the sealing ring and the dust cover, the number of the outer card grooves 105 is set to two. When multi-stage sealing is adopted, the number of the outer card grooves 105 is increased accordingly according to the number of sealing rings. A pressure cover assembly 5 is provided on the outer side of the outer card grooves 105 on both sides, and the pressure cover assembly 5 is at least one of a cylinder, a hydraulic cylinder, an electric push rod, and a mechanical linkage mechanism. The inner bracket 2 includes two groups of symmetrically arranged inner side plates 201, and the upper parts of the inner side plates 201 on both sides are connected by a second connecting plate 202. A driving mechanism 4 is provided on the upper part of the first connecting plate 102, and the driving mechanism 4 includes but is not limited to at least one of a hydraulic cylinder, an air cylinder, and an electric push rod. In this embodiment, the driving mechanism 4 adopts a hydraulic cylinder; the upper end of the driving mechanism 4 is connected to the second connecting plate 202; an inner card groove 205 is provided on the inner side plate 201, and the inner card groove 205 has the same shape as the outer card groove 105, and the inner card groove 205 is spaced apart from the outer card groove 105; in order to further improve the degree of automation of the sealing cover press-fitting, a feed conveyor belt is provided on one side of the outer bracket 1, and a discharge conveyor belt is provided on the other side of the outer bracket 1 (not shown in the figure).

[0036] Furthermore, the first connecting plate 102 and the second connecting plate 202 are both split structures, and a first sleeve 103 is provided between the outer plates 101 on both sides, and the first connecting plate 102 is gap-inserted into the first sleeve 103; a second sleeve 203 is provided between the inner plates 201 on both sides, and the second connecting plate 202 is gap-inserted into the second sleeve 203, and both ends of the first sleeve 103 and the second sleeve 203 are threadedly connected with fastening bolts; the first sleeve 103 and the second sleeve 203 realize the adjustment of the distance between the outer bracket 1 and the inner bracket 2 on both sides, so as to adapt to the press-fit use of the sealing covers of the roller tube body 7 of different lengths.

[0037] Furthermore, a guide groove 104 is provided on the outer plate 101, and a guide plate 204 is provided on the inner plate 201, and the guide plate 204 is slidably installed in the guide groove 104. The guide groove 104 and the guide plate 204 limit the up and down movement of the inner bracket 2, ensuring the stability and accuracy of the inner bracket 2 when lifting the roller tube body 7.

[0038] Furthermore, the pressure cover assembly 5 includes a fixed cover 501, which is fixedly installed on the outside of the outer plate 101, and a plurality of guide sleeves 502 are provided at one end of the lower part of the fixed cover 501. A pressure rod 503 is slidably connected in the guide sleeve 502, and a pressure head 6 is provided at one end of the pressure rod 503, and a first connecting rod 504 is hinged at the other end of the pressure rod 503; the other end of the fixed cover 501 is hinged to an articulated frame 505, and the articulated frame 505 is an L-shaped structure, and the fixed cover 501 is hinged to the middle part of the articulated frame 505, and the other end of the first connecting rod 504 is hinged to one end of the articulated frame 505, and a linkage rod 506 is also hinged on the articulated frame 505, and the lower end of the linkage rod 506 is hinged to the guide plate 204; when When the inner bracket 2 moves upward, the inner plate 201 drives the linkage rod 506 to move upward, and the linkage rod 506 drives the pressure rod 503 to move toward the outside of the outer plate 101 through the first connecting rod 504. At this time, the roller tube body 7 moves to the next outer slot 105 under the action of the inner bracket 2, and the pressure cover assembly 5 does not perform the press-fitting action; when the inner bracket 2 moves downward, the roller tube body 7 has moved to the next outer slot 105, and the inner plate 201 drives the linkage rod 506 to move downward, and the linkage rod 506 drives the pressure rod 503 to move toward the inside of the outer plate 101 through the first connecting rod 504, pressing the sealing ring and the dust cover into the interior of the roller tube body 7. Only one driving mechanism 4 is used to realize the transfer of the roller tube body 7 and the pressure cover operation after transfer.

[0039] Furthermore, the linkage rod 506 includes a first stud 5062 and a threaded sleeve 5061 threadedly connected to both sides of the first stud 5062, and the threads on both sides of the first stud 5062 have opposite rotation directions, and the threaded sleeve 5061 at one end is hinged to the guide plate 204, and the threaded sleeve 5061 at the other end is hinged to the articulated frame 505, which is convenient for adjusting the overall length of the linkage rod 506, thereby adjusting the sliding distance of the pressure rod 503, and then adjusting the pressing depth of the sealing ring and the dust cover.

[0040] Furthermore, limit plates 3 are provided on both sides of the outer plate 101, and the limit plates 3 limit the two ends of the roller tube body 7, thereby ensuring the accuracy of the roller tube body 7 during transfer; a plurality of operating holes 301 are provided on the limit plates 3, and the operating holes 301 correspond to the positions of the outer card slots 105, so as to facilitate operation when the cover assembly 5 is covered.

[0041] Furthermore, mounting holes 106 are provided at both ends of the outer plate 101, and threaded rods 302 are fixedly connected at both ends of the limit plate 3. The threaded rods 302 are gap-mounted in the mounting holes 106, and an adjusting nut 303 is threadedly connected to the threaded rod 302. A spring 304 is provided on the outside of the threaded rod 302, and one end of the spring 304 is against the limit plate 3, and the other end of the spring 304 is against the outer plate 101. The threaded rod 302 and the spring 304 cooperate to adjust the distance between the limit plates 3 on both sides, thereby limiting the use of roller tube bodies 7 of different lengths.

[0042] Furthermore, the limiting plate 3 is provided with a plurality of sealing cover guide grooves 305, and the sealing cover guide grooves 305 are installed on one side of the operating hole 301, and the sealing ring and the dust cover are placed in the sealing cover guide groove 305. The width of the sealing cover guide groove 305 is greater than the thickness of the sealing ring or the dust cover, and less than twice the thickness of the sealing ring or the dust cover, so as to avoid overlapping of the sealing ring or the dust cover in the sealing cover guide groove 305. When the sealing ring or the dust cover is pressed into the two ends of the roller tube body 7, the pressure rod 503 slides outward and withdraws from the operating hole 301. At this time, the sealing ring or the dust cover in the sealing cover guide groove 305 falls to the bottom, preparing for the next pressing, further reducing the labor intensity of the workers.

[0043] Furthermore, the pressure head 6 includes a connecting disk 601, which is rotatably connected to a second stud 603 at the central axis of the connecting disk 601, and screw sleeves 604 are symmetrically threaded on both sides of the second stud 603. The outer ring of the screw sleeve 604 is hinged with a plurality of second connecting rods 606, and the connecting disk 601 is provided with a plurality of adjustment grooves 602. A connecting block 605 is slidingly connected in the adjusting groove 602, and one end of the second connecting rod 606 is hinged to the connecting block 605, and a push rod 607 is provided on the connecting block 605; the position of the screw sleeves 604 on both sides is adjusted by rotating the second stud 603, thereby adjusting the position of the connecting block 605 in the adjusting groove 602, thereby realizing the adjustment of the center distance between the push rod 607 and the connecting disk 601, which is suitable for the press-fitting of sealing rings and dust covers of different diameters.

[0044] Furthermore, the push rod 607 is threadedly connected to the connecting block 605, which facilitates adjustment of the length of the push rod 607 extending from the connecting plate 601, further widening the depth range of the press head 6 for pressing the sealing ring and the dust cover.

[0045] When the sealing cover is pressed, the roller tube body 7 rolls down from the feed conveyor belt on the right side of the outer bracket 1 to the first outer groove 105 of the outer bracket 1, and the driving mechanism 4 drives the inner bracket 2 to move downward, and the inner side plates 201 on both sides drive the pressure rod 503 to push toward the side close to the roller tube body 7 through the linkage rod 506, pressing the sealing ring in the sealing cover guide groove 305 into the outer side of the bearing on both sides of the roller tube body 7; then the driving mechanism 4 drives the inner bracket 2 to move upward, and when the inner bracket 2 moves upward, the pressure rod 503 is pulled out from the roller tube body 7; after the inclined surface of the inner bracket 2 contacts the roller tube body 7, it continues to push the roller tube body 7 upward, and when the inclined surface of the inner groove 205 is coplanar with the inclined surface of the outer groove 105, the roller tube body 7 moves from the first outer groove 105 to the second outer groove 105, and the second outer groove 105 is pressed. The pressure cover assembly 5 on both sides of the second outer groove 105 then presses the dust cover in the sealing cover guide groove 305 into the outside of the sealing ring, and the inner bracket 2 and the outer bracket 1 are used to realize the transfer operation of the roller tube body 7 in different processes, and the linkage rod 506 and the pressure cover assembly 5 are used to realize the operation of the roller tube body 7 in different pressing processes; during the pressing process, the spacing between the inner bracket 2 and the outer bracket 1 can be adjusted according to the length of the roller tube body 7. In addition, the pressing depth of the sealing ring and the dust cover can also be adjusted by the linkage rod 506 and / or the threaded top rod 607, which is suitable for pressing roller tube bodies 7 of different sizes and different pressing depths. After the roller tube body 7 is pressed, it is output from the side of the discharge conveyor belt under the push of the inner bracket 2, avoiding manual handling of the roller and reducing the labor intensity of workers.

[0046] The above content is merely an example and explanation of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. A roller tube sealing cover press-fitting device, comprising an outer bracket and an inner bracket, wherein the outer bracket comprises two sets of symmetrically arranged outer plates, the lower portions of the outer plates on both sides being connected by a first connecting plate, characterized in that: The upper portion of the outer plate is provided with an outer card slot, and the outer card slot is a serrated structure; the number of the outer card slots is determined according to the process of pressing the roller sealing cover; the outer sides of the outer card slots on both sides are provided with a pressure cover assembly, and the pressure cover assembly is at least one of a cylinder, a hydraulic cylinder or an electric push rod, and a mechanical linkage mechanism; the inner bracket includes two groups of symmetrically arranged inner side plates, and the upper portions of the inner side plates on both sides are connected by a second connecting plate, and the upper portion of the first connecting plate is provided with a driving mechanism, and the driving mechanism is not limited to at least one of a hydraulic cylinder, a cylinder, and an electric push rod, and the upper end of the driving mechanism is connected to the second connecting plate; the inner plate is provided with an inner card slot, and the inner card slot has the same shape as the outer card slot, and the inner card slot and the outer card slot are arranged at intervals; A feed conveyor belt is provided on one side of the outer bracket, and a discharge conveyor belt is provided on the other side of the outer bracket; a guide groove is provided on the outer plate, and a guide plate is provided on the inner plate, and the guide plate is slidably installed in the guide groove; the pressure cover assembly includes a fixed cover, the fixed cover is fixedly installed on the outside of the outer plate, and a plurality of guide sleeves are provided at one end of the lower part of the fixed cover, and a pressure rod is slidably connected in the guide sleeve, and a pressure head is provided at one end of the pressure rod, and a first connecting rod is hinged to the other end of the pressure rod; the other end of the fixed cover is hinged to an articulated frame, and the articulated frame is an L-shaped structure, and the fixed cover is hinged to the middle part of the articulated frame, and the other end of the first connecting rod is hinged to one end of the articulated frame. A linkage rod is also hinged on the articulated frame, and the lower end of the linkage rod is hinged to the guide plate.

2. A roller tube sealing cover press-fitting device according to claim 1, characterized in that: The first connecting plate and the second connecting plate are both split structures, with a first sleeve provided between the outer plates on both sides, and the first connecting plate is gap-inserted inside the first sleeve; a second sleeve is provided between the inner plates on both sides, and the second connecting plate is gap-inserted inside the second sleeve, and both ends of the first sleeve and the second sleeve are threadedly connected with fastening bolts.

3. The roller tube sealing cover press-fitting device according to claim 1, characterized in that: The linkage rod includes a first stud and a threaded sleeve threadedly connected to both sides of the first stud, and the threads on both sides of the first stud have opposite rotation directions. The threaded sleeve at one end is hinged to the guide plate, and the threaded sleeve at the other end is hinged to the articulated frame.

4. The roller tube sealing cover press-fitting device according to claim 1, characterized in that: Limiting plates are provided on both sides of the outer plate, and a plurality of operating holes are provided on the limiting plates, and the operating holes correspond to the positions of the outer card slots.

5. The roller tube sealing cover press-fitting device according to claim 4, characterized in that: Mounting holes are provided at both ends of the outer plate, and threaded rods are fixedly connected at both ends of the limit plate. The threaded rods are gap-mounted in the mounting holes, and an adjusting nut is threadedly connected to the threaded rod. A spring is sleeved on the outside of the threaded rod, and one end of the spring is against the limit plate, and the other end of the spring is against the outer plate.

6. The roller tube sealing cover press-fitting device according to claim 4, characterized in that: The limiting plate is provided with a plurality of sealing cover guide grooves, and the sealing cover guide grooves are installed on one side of the operating hole, and the sealing ring and the dust cover are placed in the sealing cover guide grooves. The width of the sealing cover guide grooves is greater than the thickness of the sealing ring or the dust cover, and less than twice the thickness of the sealing ring or the dust cover.

7. The roller tube sealing cover press-fitting device according to claim 1, characterized in that: The pressure head includes a connecting disk, a second stud is rotatably connected to the central axis of the connecting disk, screw sleeves are symmetrically threaded on both sides of the second stud, a plurality of second connecting rods are hinged to the outer ring of the screw sleeve, a plurality of adjustment grooves are provided on the connecting disk, a connecting block is slidably connected in the adjusting groove, one end of the second connecting rod is hinged to the connecting block, and a push rod is provided on the connecting block.

8. The roller tube sealing cover press-fitting device according to claim 7, characterized in that: The push rod is threadedly connected to the connecting block.

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