Forming and coiling equipment used before glue filling of lining hose for pipeline repair

Abstract

The utility model relates to the technical field of lining hose processing, and discloses a pipe repair lining hose pre-glue-pouring forming and coiling device which comprises a discharging roller, fixing plates are arranged at the upper end and the lower end of the left side of the discharging roller, and round rods are fixedly connected to the inner sides of the fixing plates in a sleeved mode. The outer wall of the round rod is movably sleeved with balls located on the upper side and the lower side of the lining hose, clamping blocks are fixedly installed at the front end and the rear end of the fixing plate correspondingly, and the ends, away from the fixing plate, of the clamping blocks are movably connected with supporting rods. According to the utility model, the balls, the lifting device, the conveyor belt and the connecting assembly are matched, and the balls are distributed on the upper side and the lower side of the lining hose, so that the pressing effect of adhesion of a double-sided adhesive tape on the lining hose is realized, and the problem that gaps on the lining hose interfere with vacuumizing processing is effectively solved; the mode that the ball rotates on the lining hose is adopted, so that the adhesion tightness of the double-faced adhesive tape can be improved, and normal conveying of the lining hose cannot be hindered.

Description

Technical Field

[0001] The utility model relates to the technical field of lining hose processing, in particular to a pipeline repair lining hose forming and rolling device before glue filling. Background Art

[0002] UV-curable lined hoses have been widely used in underground pipe network repair. During the processing, the lined hoses need to be manually folded using double-sided tape. The staff folds and glues the sheets into a cylinder, and then stacks them through a forming and rolling equipment and vacuums them. This vacuuming process serves as a pretreatment for the subsequent vacuuming of the lined hoses.

[0003] However, before the lining hose reaches the forming and stacking equipment, the sheet is folded and glued into a tube manually using double-sided tape. After the manual gluing is completed, the material is transported by a conveyor. The tightness of the double-sided tape will have a certain impact on the vacuum processing of the lining hose on the stacking equipment. When the double-sided tape is not firmly adhered, there will be gaps between the materials. At this time, when the staff vacuum the lining hose, air will flow in the gaps, resulting in a decrease in the vacuum quality of the lining hose. In order to complete the vacuum processing of the lining hose, it is necessary to increase the step of the staff to perform secondary gluing on the gaps, which increases the workload of the staff and slows down the efficiency of the lining hose processing. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a pipeline repair lining hose forming and stacking equipment before glue filling, which has the advantages of improving the tightness of the double-sided tape after adhesion, saving the workers' secondary processing steps when the adhesive is not strong, and improving the efficiency of lining hose forming and stacking, thus solving the problems raised in the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a pipeline repair lining hose pre-glue forming and stacking equipment, including a discharging roller, the upper and lower ends of the left side of the discharging roller are provided with fixed plates, the inner side of the fixed plate is fixedly sleeved with a round rod, the outer wall of the round rod is movably sleeved with balls located on the upper and lower sides of the lining hose, the front and rear ends of the fixed plate are fixedly installed with clamping blocks, the end of the clamping block away from the fixed plate is movably connected to a support rod, the inner wall of the support rod is provided with a limiting rod for connecting the clamping block, the outer wall of the limiting rod is evenly distributed with protrusions, the limiting rod is connected to the inner wall of the support rod through a connecting assembly, and the outer side of the support rod is provided with a lifting assembly for adjusting the use height of the ball.

[0006] Preferably, a conveyor belt for loading the lining hose is fixedly installed on the left side of the discharge roller, the lower ends of the conveyor belt and the discharge roller are fixedly connected to a base, a No. 1 pressure roller is arranged below the conveyor belt and the discharge roller, and a No. 2 pressure roller located on the right side of the fixed plate is installed on the left side of the conveyor belt.

[0007] Preferably, a cylindrical groove is formed on the inner wall of the locking block, and the inner wall of the cylindrical groove is movably connected with the outer wall of the limiting rod. The outer wall of the cylindrical groove is evenly provided with grooves, and the inner wall of the groove is movably connected with the outer wall of the protrusion.

[0008] Preferably, sliding grooves are provided on the front and rear sides of the inner wall of the support rod, columns are fixedly installed on the upper and lower sides of the support rod, a short rod for connecting the lifting assembly is fixedly connected to the outer end of the support rod, and rectangular holes located on the inner side of the columns are penetrated through the upper and lower sides of the support rod.

[0009] Preferably, the connecting assembly includes a connecting plate, the inner side of the connecting plate is fixedly connected to the outer end of the limiting rod, sliders are fixedly installed on the left and right sides of the connecting plate, and the outer wall of the slider away from one end of the connecting plate is slidably connected to the inner wall of the slide groove, a spring located inside the support rod is fixedly installed on the side of the connecting plate away from the limiting rod, and the other end of the spring is fixedly connected to the inner wall of the support rod.

[0010] Preferably, brackets are fixedly installed on both upper and lower ends of the connecting plate, and the outer wall of the bracket is movably connected to the inner wall of the rectangular hole, the end of the bracket away from the connecting plate is fixedly connected to a cross bar, the outer wall of the cross bar is movably connected to a ring located above the support rod, the outer wall of the ring is fixedly connected to an anti-loss rope, the end of the anti-loss rope away from the ring is fixedly installed with a positioning ring, and the inner wall of the positioning ring is movably connected to the outer wall of the column.

[0011] Preferably, the lifting assembly includes a ball nut and a ball screw, the inner wall of the ball nut is threadedly sleeved with the outer wall of the ball screw, the outer walls of the ball screw on the upper and lower sides are provided with threads in opposite directions, the inner wall of the ball screw is fixedly sleeved with a rotating shaft, the upper end of the rotating shaft is fixedly connected with a synchronization assembly, the rear end of the synchronization assembly away from the rotating shaft is fixedly installed with a rotating motor, and a reducer is provided on the output shaft of the rotating motor.

[0012] Preferably, a reinforcement rod is fixedly installed on the left end of the base, and the end of the reinforcement rod away from the base is fixedly connected to a vertical rod located outside the lifting assembly, and the inner wall of the vertical rod is movably connected to the outer walls of the upper and lower ends of the rotating shaft, and the upper end of the vertical rod is fixedly installed with a protective cover located outside the synchronization assembly, and the upper end surface of the protective cover is fixedly installed with a chassis, and the inner wall of the chassis is fixedly connected to the outer wall of the rotating motor.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model realizes the pressing effect of the double-sided adhesive on the lining hose by the coordination among the ball, the lifting device, the conveyor belt and the connecting assembly, and utilizes the arrangement of the ball distributed on the upper and lower sides of the lining hose, thereby effectively solving the problem that the gap on the lining hose interferes with the vacuum processing. The ball is rotated on the lining hose, which not only improves the tightness of the double-sided adhesive, but also does not hinder the normal transmission of the lining hose.

[0015] 2. The utility model realizes the adjustment of the distance between the upper and lower balls through the coordination between the ball, the lifting device, the rotating motor and the connecting assembly, utilizing the setting of the lifting device, effectively solving the problem of different thicknesses of the lining hose. The rotating motor drives the movement of the upper and lower lifting devices through the connection of the rotating shaft, so that the distance between the upper and lower balls can be adjusted according to the actual thickness of the lining hose, thereby improving the practicality of the ball pressing the lining hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a side view of the sphere of the utility model;

[0018] Figure 3 It is a top view of the conveyor belt of the utility model;

[0019] Figure 4 It is a side view of the fixing plate of the utility model;

[0020] Figure 5 It is a side view of the reinforcement rod of the utility model;

[0021] Figure 6 It is a side view of the lifting assembly of the utility model;

[0022] Figure 7 It is a side view of the cylindrical groove of the utility model;

[0023] Figure 8 It is a cross-sectional view of the support rod of the utility model.

[0024] In the figure: 1. discharge roller; 2. fixing plate; 3. round rod; 4. sphere; 5. snap-fit ​​block; 6. support rod; 7. limit rod; 8. bump; 9. connecting assembly; 901. connecting plate; 902. slider; 903. spring; 10. lifting assembly; 101. ball nut; 102. ball screw; 11. cylindrical groove; 12. groove; 13. slide; 14. column; 15. short rod; 16. rectangular hole; 17. bracket; 18. cross bar; 19. ring; 20. anti-lost rope; 21. positioning ring; 22. rotating shaft; 23. synchronous assembly; 24. rotating motor; 25. base; 26. conveyor belt; 27. No. 1 pressure roller; 28. No. 2 pressure roller; 29. ​​reinforcement rod; 30. vertical rod; 31. protective cover; 32. chassis. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1 , Figure 3 and Figure 7, a pipeline repair lining hose pre-glue forming and rolling equipment, including a discharge roller 1, the upper and lower ends of the left side of the discharge roller 1 are provided with a fixed plate 2, the setting of the fixed plate 2 provides support and platform for the installation of a round rod 3, the inner side of the fixed plate 2 is fixedly sleeved with a round rod 3, the installation of the round rod 3 serves to connect the fixed plate 2 with the ball 4, the outer wall of the round rod 3 is movably sleeved with balls 4 located on the upper and lower sides of the lining hose, the contact between the ball 4 and the lining hose can not only press the upper and lower sides of the lining hose, because the ball 4 can rotate on the outer wall of the round rod 3, but also avoid the lining hose being blocked by the ball 4 when loading, the front and rear ends of the fixed plate 2 are fixedly installed with a clamping block 5, the end of the clamping block 5 away from the fixed plate 2 is movably connected to a support rod 6, and the inner wall of the support rod 6 is provided with a connection The limit rod 7 of the locking block 5, the setting of the limit rod 7 serves to connect the locking block 5 with the support rod 6, the outer wall of the limit rod 7 is evenly distributed with protrusions 8, the installation of the protrusions 8 limits the installation position of the limit rod 7 in the locking block 5, the limit rod 7 is connected to the inner wall of the support rod 6 through the connecting component 9, the setting of the connecting component 9 serves to connect the limit rod 7 with the support rod 6, through the movement of the connecting component 9, the limit rod 7 can not only be retracted to the inside of the support rod 6, but also can be popped out from the inside of the support rod 6, the outer side of the support rod 6 is provided with a lifting component 10 for adjusting the use height of the ball 4, the movement of the lifting component 10 on the upper and lower sides is to adjust the distance between the balls 4 on the upper and lower sides, so that the balls 4 on the upper and lower sides can be suitable for the use of liner hoses with different thicknesses.

[0027] A conveyor belt 26 for loading the lining hose is fixedly installed on the left side of the discharge roller 1. The movement of the conveyor belt 26 can transfer the lining hose to the discharge roller 1. The lower ends of the conveyor belt 26 and the discharge roller 1 are fixedly connected to a base 25. The setting of the base 25 serves to support the conveyor belt 26 and the discharge roller 1. A No. 1 pressure roller 27 is arranged below the conveyor belt 26 and the discharge roller 1, and a No. 2 pressure roller 28 is installed on the left side of the conveyor belt 26 and is located on the right side of the fixed plate 2.

[0028] A cylindrical groove 11 is provided on the inner wall of the locking block 5, and the cylindrical groove 11 provides space for the installation of the limiting rod 7, and the inner wall of the cylindrical groove 11 is movably connected with the outer wall of the limiting rod 7. The outer wall of the cylindrical groove 11 is evenly provided with grooves 12, and the grooves 12 provide space for the installation of the protrusion 8, and the inner wall of the groove 12 is movably connected with the outer wall of the protrusion 8.

[0029] See also Figure 2 , Figure 5 and Figure 8Slide grooves 13 are provided on the front and rear sides of the inner wall of the support rod 6. The opening of the slide grooves 13 provides space for the movement of the slider 902. Columns 14 are fixedly installed on the upper and lower sides of the support rod 6. The outer end of the support rod 6 is fixedly connected with a short rod 15 for connecting the lifting component 10. The installation of the short rod 15 serves to connect the support rod 6 with the lifting component 10. Rectangular holes 16 located on the inner side of the columns 14 are opened on the upper and lower sides of the support rod 6. The opening of the rectangular hole 16 provides space for the movement of the bracket 17.

[0030] The connecting assembly 9 includes a connecting plate 901, the inner side of which is fixedly connected to the outer end of the limiting rod 7. The setting of the connecting plate 901 serves to connect the spring 903 and the limiting rod 7. At the same time, the connecting plate 901 also provides support and a platform for the installation of the slider 902. The sliders 902 are fixedly installed on the left and right sides of the connecting plate 901. The movement of the slider 902 in the slide groove 13 strengthens the stability of the movement of the connecting plate 901 in the support rod 6, and the slider 902 is away from the connecting plate 901. The outer wall of the end is slidably connected to the inner wall of the slide groove 13, and a spring 903 located inside the support rod 6 is fixedly installed on the side of the connecting plate 901 away from the limit rod 7. The compression of the spring 903 can retract the limit rod 7 into the inside of the support rod 6, and the rebound of the spring 903 can reset the limit rod 7 to the inside of the support rod 6, thereby facilitating the disassembly and assembly of the ball 4, and the other end of the spring 903 is fixedly connected to the inner wall of the support rod 6, and the installation of the spring 903 serves to connect the support rod 6 and the connecting plate 901.

[0031] The upper and lower ends of the connecting plate 901 are fixedly installed with brackets 17, and the installation of the bracket 17 serves to connect the cross bar 18 with the connecting plate 901, and the outer wall of the bracket 17 is movably sleeved with the inner wall of the rectangular hole 16, and the end of the bracket 17 away from the connecting plate 901 is fixedly sleeved with the cross bar 18, and the setting of the cross bar 18 serves to connect the ring 19 with the bracket 17, and the outer wall of the cross bar 18 is movably sleeved with the ring 19 located above the support rod 6, and the outer wall of the ring 19 is fixedly connected with an anti-lost rope 20, and the installation of the anti-lost rope 20 serves to connect the positioning ring 21 with the ring 19, and the end of the anti-lost rope 20 away from the ring 19 is fixedly installed with a positioning ring 21, and the inner wall of the positioning ring 21 is movably sleeved with the outer wall of the column 14, when the positioning ring 21 is connected to the column 14, the limit rod 7 can be separated from the locking block 5, and when the positioning ring 21 is separated from the column 14, the limit rod 7 can be inserted into the inside of the locking block 5.

[0032] See also Figure 4 and Figure 6The lifting assembly 10 includes a ball nut 101 and a ball screw 102. The inner wall of the ball nut 101 is threadedly sleeved with the outer wall of the ball screw 102. The threaded sleeve connection mode enables the circumferential rotation of the ball screw 102 to provide power for the vertical lifting movement of the ball nut 101. The outer walls of the ball screws 102 on the upper and lower sides are provided with threads in opposite directions. The threads in opposite directions are arranged so that the rotating shaft 22 rotates in a circle while driving the ball screw nuts 101 on the upper and lower sides to move toward the inner lining hose at the same time, or at the same time. The ball screw 102 moves in the opposite direction of the liner hose. The inner wall of the ball screw 102 is fixedly sleeved with a rotating shaft 22. The rotation of the rotating shaft 22 provides power for the movement of the lifting assembly 10. The upper end of the rotating shaft 22 is fixedly connected with a synchronization assembly 23. The setting of the synchronization assembly 23 serves to connect the rotating shaft 22 with the rotating motor 24. The rear end of the synchronization assembly 23 away from the rotating shaft 22 is fixedly installed with the rotating motor 24, and a reducer is provided on the output shaft of the rotating motor 24. The setting of the reducer serves to adjust the speed of the output shaft of the rotating motor 24.

[0033] A reinforcement rod 29 is fixedly installed on the left end of the base 25. The setting of the reinforcement rod 29 serves to connect the base 25 with the vertical rod 30. The end of the reinforcement rod 29 away from the base 25 is fixedly connected to the vertical rod 30 located outside the lifting assembly 10. The installation of the vertical rod 30 provides space and a platform for the rotation and installation of the rotating shaft 22, and the inner wall of the vertical rod 30 is movably connected to the outer walls of the upper and lower ends of the rotating shaft 22. A protective cover 31 located outside the synchronous assembly 23 is fixedly installed on the upper end of the vertical rod 30. The setting of the protective cover 31 provides space for the installation of the synchronous assembly 23. The upper end surface of the protective cover 31 is fixedly installed with a chassis 32. The chassis 32 protects the rotating motor 24, and the inner wall of the chassis 32 is fixedly connected to the outer wall of the rotating motor 24.

[0034] Working principle: When in use, first, according to the thickness of the lining hose for pipe repair formed and rolled before pouring, adjust the distance between the balls 4 on the upper and lower sides, turn on the power of the rotating motor 24, and after the rotating motor 24 is turned on, it is connected to the rotating shaft 22 through the synchronous component 23. Since the synchronous component 23 is composed of two synchronous wheels and a synchronous belt, after the rotating motor 24 is turned on, it drives the synchronous wheels on the front and rear sides of the synchronous component 23 to rotate, and then drives the rotating shaft 22 on the front and rear sides to rotate. When the rotating shaft 22 rotates, it drives the ball bearings fixedly sleeved at the upper and lower ends of its surface. The rotation of the screw rod 102, due to the setting of the threads of the ball screw rods 102 on the upper and lower sides in opposite directions, and the threaded sleeve connection between the ball screw rod 102 and the ball nut 101, makes the ball screw rod 102 rotate in a circle and drives the ball nut 101 on its surface to move in the direction of the lining hose at the same time. When the ball nut 101 moves, the connection between the short rod 15 and the connecting assembly 9 drives the fixed plate 2 to move in the direction of the lining hose until the surface of the ball 4 contacts the outer wall of the lining hose, so that the ball 4 on the upper and lower sides can contact the lining hose. The pressing on the upper and lower sides facilitates the exhaust of the air inside the lining hose. Then, the lining hose passes through the balls 4 on the upper and lower sides and then passes through the bottom of the second pressure roller 28. It is then conveyed from the conveyor belt 26 to the bottom of the first pressure roller 27 and discharged from the surface of the discharge roller 1. It reaches the discharge end for stacking and placement. Finally, when the ball 4 is worn out after long-term use and needs to be replaced, the positioning ring 21 is pulled to put the positioning ring 21 on the column 14. At this time, the spring 903 is compressed inside the support rod 6. While the spring 903 is compressed, it is connected to the support rod 6. The connection of plate 901 drives the limit rod 7 to move toward the inside of the support rod 6. At this time, the limit rod 7 is separated from the cylindrical groove 11, and the protrusion 8 is separated from the groove 12, so that the snap block 5 and the support rod 6 can be separated, and the fixed plate 2 can be removed from the support rod 6. Then, by utilizing the rebound of spring 903, the positioning ring 21 is separated from the column 14, so that the limit rod 7 is inserted into the inside of the cylindrical groove 11, and the protrusion 8 is snapped into the inside of the groove 12, so that the snap block 5 and the support rod 6 can be connected, and the installation of the fixed plate 2 can be completed before the replacement of the worn ball 4 is completed.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the drawings of the present utility model, the fill pattern is only for distinguishing the layers, without any other limitation.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe repair lining hose forming and rolling device before glue filling, comprising a discharge roller (1), characterized in that: A fixing plate (2) is provided at both upper and lower ends of the left side of the discharge roller (1); a round rod (3) is fixedly sleeved on the inner side of the fixing plate (2); a ball (4) located on the upper and lower sides of the lining hose is movably sleeved on the outer wall of the round rod (3); a clamping block (5) is fixedly installed at both front and rear ends of the fixing plate (2); an end of the clamping block (5) away from the fixing plate (2) is movably connected to a support rod (6); a limiting rod (7) for connecting the clamping block (5) is provided on the inner wall of the support rod (6); protrusions (8) are evenly distributed on the outer wall of the limiting rod (7); the limiting rod (7) is connected to the inner wall of the support rod (6) through a connecting assembly (9); and a lifting assembly (10) for adjusting the use height of the ball (4) is provided on the outer side of the support rod (6).

2. According to claim 1, a pipe repair lining hose pre-filling forming and rolling equipment, characterized in that: A conveyor belt (26) for loading the lining hose is fixedly installed on the left side of the discharge roller (1), and the lower ends of the conveyor belt (26) and the discharge roller (1) are fixedly connected to a base (25). A first pressure roller (27) is arranged below the conveyor belt (26) and the discharge roller (1), and a second pressure roller (28) located on the right side of the fixed plate (2) is installed on the left side of the conveyor belt (26).

3. According to claim 1, a pipeline repair lining hose pre-filling forming and rolling equipment, characterized in that: The inner wall of the locking block (5) is provided with a columnar groove (11), and the inner wall of the columnar groove (11) is movably sleeved with the outer wall of the limiting rod (7); the outer wall of the columnar groove (11) is evenly provided with grooves (12), and the inner wall of the grooves (12) is movably clamped with the outer wall of the protrusion (8).

4. According to claim 1, a pipe repair lining hose forming and rolling equipment before glue filling, characterized in that: The front and rear sides of the inner wall of the support rod (6) are provided with sliding grooves (13), the upper and lower sides of the support rod (6) are fixedly installed with columns (14), the outer end of the support rod (6) is fixedly connected with a short rod (15) for connecting the lifting component (10), and the upper and lower sides of the support rod (6) are penetrated by rectangular holes (16) located on the inner side of the columns (14).

5. According to claim 1, a pipeline repair lining hose pre-glue forming and rolling equipment, characterized in that: The connecting assembly (9) comprises a connecting plate (901), the inner side of which is fixedly connected to the outer end of the limiting rod (7), sliders (902) are fixedly installed on both the left and right sides of the connecting plate (901), and the outer wall of the slider (902) away from one end of the connecting plate (901) is slidably connected to the inner wall of the slide groove (13), and a spring (903) located inside the support rod (6) is fixedly installed on the side of the connecting plate (901) away from the limiting rod (7), and the other end of the spring (903) is fixedly connected to the inner wall of the support rod (6).

6. The equipment for forming and rolling the inner lining hose for pipeline repair before glue filling according to claim 5 is characterized in that: The upper and lower ends of the connecting plate (901) are fixedly mounted with brackets (17), and the outer wall of the bracket (17) is movably connected to the inner wall of the rectangular hole (16); the end of the bracket (17) away from the connecting plate (901) is fixedly mounted with a cross bar (18), the outer wall of the cross bar (18) is movably connected with a ring (19) located above the support rod (6), the outer wall of the ring (19) is fixedly connected with an anti-lost rope (20), the end of the anti-lost rope (20) away from the ring (19) is fixedly mounted with a positioning ring (21), and the inner wall of the positioning ring (21) is movably connected to the outer wall of the column (14).

7. According to claim 1, a pipe repair lining hose forming and rolling equipment before glue filling, characterized in that: The lifting assembly (10) comprises a ball nut (101) and a ball screw (102); the inner wall of the ball nut (101) is threadedly sleeved with the outer wall of the ball screw (102); the outer walls of the ball screw (102) at the upper and lower sides are provided with threads in opposite directions; the inner wall of the ball screw (102) is fixedly sleeved with a rotating shaft (22); the upper end of the rotating shaft (22) is fixedly connected with a synchronous assembly (23); a rotating motor (24) is fixedly mounted on the rear end of the synchronous assembly (23) away from the rotating shaft (22); and a reducer is provided on the output shaft of the rotating motor (24).

8. According to claim 2, a pipe repair lining hose forming and rolling equipment before glue filling, characterized in that: A reinforcement rod (29) is fixedly mounted on the left end of the base (25); an end of the reinforcement rod (29) away from the base (25) is fixedly connected to a vertical rod (30) located outside the lifting assembly (10); and the inner wall of the vertical rod (30) is movably sleeved with the outer walls of the upper and lower ends of the rotating shaft (22); a protective cover (31) located outside the synchronous assembly (23) is fixedly mounted on the upper end of the vertical rod (30); a chassis (32) is fixedly mounted on the upper end surface of the protective cover (31); and the inner wall of the chassis (32) is fixedly sleeved with the outer wall of the rotating motor (24).

Images