Automatic lifting mechanism for rubber plate winding drum

Abstract

The invention relates to the technical field of anti-corrosion rubber plates, in particular to an automatic lifting mechanism for a rubber plate winding drum. Comprising a rotating mechanism, a power motor, a descending mechanism and a lifting mechanism, the rotating mechanism comprises a driving roller and a driven roller; the power motor drives the winding drum to rotate through the driving roller; the descending mechanism comprises a supporting spring; the supporting spring is connected with the rotating mechanism, the power motor and the lifting mechanism; the lifting mechanism comprises a power gear, a transmission gear, a rack and a switching structure; the power gear is in transmission connection with the second output gear; the transmission gear is arranged between the power gear and the rack; and the transmission gear is in transmission connection with the switching structure. In the prior art, the height of a furling drum needs to be controlled manually. Therefore, the problems that manpower is additionally occupied, control is not timely, and the control error is large and the like are easily caused. Compared with the prior art, the height of the winding drum can be automatically adjusted, on one hand, manpower is saved, on the other hand, response can be conducted in time, and errors are low.

Description

Technical Field

[0001] The invention relates to the technical field of anti-corrosion rubber sheets, and in particular to an automatic lifting mechanism for a rubber sheet reel. Background Art

[0002] Since steel structure materials have the characteristics of high temperature and high pressure resistance, which cannot be replaced by other materials such as plastics, it is of great significance to study the anti-corrosion treatment of steel surfaces without affecting the characteristics of the steel itself. Rubber anti-corrosion sheets have good corrosion resistance to media such as acids, alkalis, and salts, and also have good bonding properties with steel. In actual application, rubber anti-corrosion sheets are generally bonded to the steel surface at the project site. Usually, the rubber anti-corrosion sheets are packaged into rolls, and then the packaged rubber anti-corrosion sheets are transported to the project site.

[0003] In actual operation, the rubber anti-corrosion sheet is usually rolled up with a rolling device in units of 100 meters. However, there is a certain distance between the empty rolling drum and the guide roller, and the diameter of the guide roller is relatively small, which makes it easy for the rubber anti-corrosion sheet to be squeezed by the guide roller, causing the quality of the rubber anti-corrosion sheet to be damaged or deformed. At the same time, during the rolling process of the rolling drum, the rolling diameter will gradually increase.

[0004] In order to avoid the rubber anti-corrosion plate from being squeezed during the winding process and to adapt to the gradually increasing winding diameter, it is necessary to manually control the height of the winding drum. The height control of the winding drum is completed by the staff stepping on the foot switch next to it to trigger the corresponding motor, which requires additional manpower, and manual operation is prone to problems such as untimely operation and large operation errors. Summary of the invention

[0005] In view of the technical problems in the prior art, the present invention provides an automatic lifting mechanism for a rubber sheet take-up drum.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A rubber sheet reel automatic lifting mechanism comprises: a rotating mechanism, a power motor, a descending mechanism, a lifting mechanism, and a mounting frame; the mounting frame comprises a shell and a supporting frame; the supporting frame is slidably connected to the shell; the supporting frame is connected to the rotating mechanism, the power motor, and the lifting mechanism; the descending mechanism comprises a supporting spring; one end of the supporting spring is connected to the shell, and the other end is connected to the supporting frame; the rotating mechanism comprises an active roller and a driven roller; the active roller and the driven roller are in contact with the reel; a first output gear and a second output gear are arranged on the output end of the power motor; the first output gear is meshed with the active roller to drive the reel to rotate through the active roller; the lifting mechanism comprises a power gear, a transmission gear, a rack, and a switching structure; the power gear is transmission-connected to the second output gear; the transmission gear is arranged between the power gear and the rack; the transmission gear is transmission-connected to the switching structure; when the supporting spring is compressed to the limit position, the switching structure can push the transmission gear to mesh with the power gear and the rack; when the transmission gear moves to the top of the rack, the switching structure can drive the transmission gear to disengage from the power gear and the rack.

[0008] In actual application, the reel is set between the active roller and the driven roller so that the active roller, the driven roller and the reel are in contact with each other. The power motor drives the active roller to rotate through the first output gear, and then the active roller drives the reel to rotate through friction, so as to reel the rubber anti-corrosion plate. As the reeling process proceeds, the weight of the rubber anti-corrosion plate on the reel gradually increases, and the reeling diameter of the reel gradually increases. In this process, the support spring is gradually compressed. At this time, the reel gradually descends. At the same time, the rotating mechanism, the power motor and the lifting mechanism descend synchronously. When it descends to the limit position, it indicates that the reeling process has proceeded to a certain extent, and the reeling diameter of the reel reaches the control condition. As a result, the switching structure is triggered, and the switching structure drives the transmission gear to mesh with the power gear and the rack. The power gear is connected to the second output gear in transmission, so that under the drive of the power motor, the second output gear, the power gear and the transmission gear rotate synchronously, and then under the cooperation of the rack, the rotating mechanism, the power motor and the lifting mechanism will be lifted synchronously, thereby raising the height of the reel. When the lifting reaches the limit position, the switching structure is triggered again, pushing the transmission gear to disengage from the power gear and the rack, and the lifting ends. At this time, the rubber anti-corrosion plate rolled up by the winding drum reaches the specified length. In summary, the present invention can automatically adjust the height of the winding drum according to the winding progress of the winding drum. On the one hand, no manual intervention is required, and on the other hand, the control is timely and the control error is small.

[0009] Furthermore, the active roller is rotatably connected to the support frame; the driven roller is rotatably connected to the support frame; a gap is provided between the active roller and the driven roller for accommodating the winding drum; and the power motor is fixedly arranged on the support frame.

[0010] Furthermore, the descending mechanism also includes a stabilizing base; the stabilizing bases are respectively arranged at both ends of the supporting spring; the ends of the supporting spring extend into the stabilizing bases; one of the stabilizing bases is connected to the shell; and the other stabilizing base is connected to the supporting frame.

[0011] Furthermore, the power gear is rotatably connected to the support frame; a transmission chain is sleeved on the power gear and the second output gear; and a through opening corresponding to the transmission chain is opened on the support frame.

[0012] Furthermore, the switching structure includes a trigger plate and a trigger protrusion; the transmission gear is rotatably connected to the trigger plate; the trigger plate is slidably connected to the support frame; a trigger groove is opened on the trigger plate; an angle is set between the trigger groove and the vertical direction; the trigger protrusion is fixedly connected to the shell; the trigger protrusion corresponds to the trigger groove; when the trigger protrusion enters the trigger groove, it can push the trigger plate to slide relative to the support frame.

[0013] Furthermore, the number of the trigger slots is two; the two trigger slots are parallel to each other.

[0014] Furthermore, a guiding portion is provided on the trigger plate; the guiding portion is provided at the entry end of the trigger slot; the guiding portion corresponds to the trigger protrusion to guide the trigger protrusion to enter the trigger slot.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The present invention can effectively adjust the height of the reel, and the reel and the actual reeling position are always within a reasonable range, thereby meeting the height control requirements for the reel.

[0017] The height control process of the present invention can be automatically performed according to the winding progress without manual control by staff, thereby effectively saving manpower, making the control more timely, and reducing operating errors.

[0018] The reeling of the rubber anti-corrosion plate and the lowering and raising of the reeling drum can be done only by the power motor without any other power source. Therefore, the structure of the device is more refined and the overall structure is more compact, which helps to reduce the space occupied by the device.

[0019] The above process can be completed by maintaining the rotation direction of the power motor unchanged, without the need for the power motor to be reversed, thereby helping to simplify the supporting control system, simplifying the control logic and helping to extend the service life of the power motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 : Overall structure diagram.

[0021] Figure 2 : Rotating mechanism structure diagram.

[0022] Figure 3 : Exploded view of the mounting bracket.

[0023] Figure 4 : Lifting mechanism structure diagram.

[0024] Figure 5 : Schematic diagram of switching structure movement.

[0025] In the figure: 1. rotating mechanism; 11. active roller; 12. driven roller; 2. power motor; 21. first output gear; 22. second output gear; 3. descending mechanism; 31. supporting spring; 32. stabilizing base; 4. lifting mechanism; 41. power gear; 42. transmission gear; 43. rack; 44. switching structure; 442. trigger protrusion; 441. trigger plate; 4411. trigger groove; 4412. guide part; 5. mounting frame; 51. housing; 52. supporting frame. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] An automatic lifting mechanism for a rubber sheet reel includes: a rotating mechanism 1, a power motor 2, a descending mechanism 3, a lifting mechanism 4, and a mounting frame 5. The mounting frame 5 includes a shell 51 and a support frame 52. The shell 51 is a hollow rectangular structure for accommodating the aforementioned structure. At the same time, a groove corresponding to the end of the reel is provided on the shell 51 to avoid interference between the shell 51 and the reel during the process of reeling the rubber anti-corrosion sheet. The support frame 52 is arranged inside the shell 51. The support frame 52 is provided with a T-shaped protrusion for sliding, and the shell 51 is provided with a corresponding slide groove, so that the support frame 52 can be slidably connected to the shell 51. The sliding direction of the support frame 52 is vertical.

[0028] The power motor 2 is fixedly arranged on the support frame 52. The output end of the power motor 2 is provided with a first output gear 21 and a second output gear 22. Thus, the power motor 2 can synchronously drive the first output gear 21 and the second output gear 22 to rotate.

[0029] The rotating mechanism 1 is mounted on the support frame 52. The rotating mechanism 1 includes an active roller 11 and a driven roller 12. The active roller 11 and the driven roller 12 are rotatably connected to the support frame 52. A gap is provided between the active roller 11 and the driven roller 12 for accommodating the end of the winding drum. The active roller 11 is provided with a tooth groove corresponding to the first output gear 21. The active roller 11 meshes with the first output gear 21 through the tooth groove. Thus, the winding drum can be mounted between the active roller 11 and the driven roller 12. When the power motor 2 rotates, the active roller 11 is driven to rotate through the first output gear 21, and then the active roller 11 drives the winding drum to rotate through the friction force. When the winding drum rotates, the driven roller 12 rotates synchronously under the action of the friction force. Thus, the active roller 11 and the driven roller 12 jointly carry the winding drum and assist the winding drum in winding the rubber anti-corrosion plate.

[0030] The descending mechanism 3 includes a supporting spring 31 and a stabilizing base 32. The supporting spring 31 is arranged in the vertical direction. The stabilizing bases 32 are respectively arranged at both ends of the supporting spring 31. The ends of the supporting spring 31 extend into the stabilizing bases 32. One of the stabilizing bases 32 is connected to the shell 51. The other stabilizing base 32 is connected to the supporting frame 52. Specifically, two stabilizing bases 32 and one supporting spring 31 together form a spring group. In this device, there are two spring groups in total, and the two spring groups are parallel to each other.

[0031] The lifting mechanism 4 includes a power gear 41, a transmission gear 42, a rack 43, and a switching structure 44. The power gear 41 is a gear combination structure composed of two gears, and the two gears are connected to each other and coaxially arranged. As a result, the two gears can rotate synchronously. For the convenience of description below, one of the gears is referred to as gear A and the other gear is referred to as gear B. The power gear 41 is rotatably connected to the support frame 52. Gear A of the power gear 41 is transmission-connected to the second output gear 22. Specifically, a transmission chain is provided on both. A through hole corresponding to the transmission chain is provided on the support frame 52. A toothed structure for meshing is provided on the rack 43. The rack 43 is arranged in the vertical direction. The rack 43 is fixedly connected to the inner wall of the housing 51. Gear B of the power gear 41 corresponds to the rack 43, that is, the two are located in the same plane. The switching structure 44 includes a trigger plate 441 and a trigger protrusion 442. The trigger plate 441 is a rectangular plate. The trigger plate 441 is arranged in the vertical direction. One end of the trigger plate 441 is slidably connected to the support frame 52. The trigger protrusion 442 is a cylindrical structure. The trigger protrusion 442 is fixedly arranged on the inner wall of the shell 51 and corresponds to the trigger plate 441. The trigger plate 441 is provided with a trigger groove 4411 and a guide portion 4412. The trigger groove 4411 is inclined, that is, an angle is provided between the trigger groove 4411 and the vertical direction. At the same time, the trigger groove 4411 corresponds to the trigger protrusion 442, so that the trigger protrusion 442 can enter the trigger groove 4411. On the other hand, the number of the trigger grooves 4411 is two, and the two trigger grooves 4411 are arranged on the trigger plate 441 in the vertical direction. The two trigger grooves 4411 are parallel to each other. The guide portion 4412 corresponds to the trigger groove 4411 one by one. The guide portion 4412 is arranged at the entry end of the trigger groove 4411 (the end where the trigger protrusion 442 enters the trigger groove 4411). The guide portion 4412 can be regarded as a portion of the trigger groove 4411 that continues to extend. The guide portion 4412 corresponds to the trigger protrusion 442, so that the trigger protrusion 442 can be guided to enter the trigger groove 4411. Therefore, under the cooperation of the trigger groove 4411, the guide portion 4412 and the trigger protrusion 442, the trigger plate 441 can be pushed to slide relative to the support frame 52. On the other hand, the transmission gear 42 is located between the gear B of the power gear 41 and the rack 43. The transmission gear 42 is rotatably connected to the trigger plate 441. When the trigger plate 441 slides relative to the support frame 52, the trigger plate 441 can drive the transmission gear 42 to move relative to the power gear 41, thereby driving the transmission gear 42 to mesh with the gear B and the rack 43 or driving the transmission gear 42 to disengage from the gear B and the rack 43. Preferably, the power gear 41 and the transmission gear 42 can be helical gears, and the rack 43 is provided with tooth grooves matching the helical gears to meet the needs of instantaneous engagement and disengagement of the three.

[0032] It is worth noting that there are two groups of the above-mentioned structures, which are respectively arranged at the two ends of the reel to support the normal rotation of the reel.

[0033] In actual operation, the default device is in a state where the reel is empty and the transmission gear 42 is not meshed with the power gear 41. At this time, the reel has not yet started to reel in the rubber anti-corrosion plate, and the relative position between the reel and the guide roller is within a reasonable range. For the convenience of description below, the trigger slot 4411 far from the ground is called the lifting trigger slot, and the trigger slot 4411 close to the ground is called the reset trigger slot.

[0034] At this time, the power motor 2 is started, and driven by the power motor 2, the first output gear 21 and the second output gear 22 begin to rotate synchronously. The first output gear 21 starts to drive the active roller 11 to rotate, and then drives the take-up drum to rotate through the active roller 11. At this time, the take-up drum starts to reel in the rubber anti-corrosion sheet. At the same time, the second output gear 22 drives the power gear 41 to rotate through the transmission chain. Because the transmission gear 42 has not yet meshed with the power gear 41, the current power gear 41 is in an idling state.

[0035] As the reeling progresses, more and more rubber anti-corrosion plates are reeled on the reel. The weight of the reel gradually increases. As the weight of the reel gradually increases, the reel begins to gradually compress the support spring 31. As a result, the support frame 52 and related structures (other structures except the trigger protrusion 442 and the rack 43) are gradually moved downward. When the guide portion 4412 corresponding to the lifting trigger groove fits with the trigger protrusion 442, the trigger protrusion 442 is introduced into the lifting trigger groove. Because the trigger protrusion 442 is fixedly connected to the housing 51, and the trigger plate 441 is slidably connected to the support frame 52. As the downward movement continues, under the action of the inclined surface of the lifting trigger groove, the trigger protrusion 442 will push the trigger plate 441 to slide relative to the support frame 52. Finally, the trigger protrusion 442 is separated from the lifting trigger groove from the other end of the lifting trigger groove. At this time, the trigger protrusion 442 no longer pushes the trigger plate 441 to slide, and the outer edge of the lifting trigger groove is in a state of being tangent to the trigger protrusion 442. At the same time, driven by the trigger plate 441, the transmission gear 42 is completely pushed toward the power gear 41, so that the power gear 41, the transmission gear 42, and the rack 43 mesh with each other. At this point, the rubber anti-corrosion sheet rolled on the take-up drum reaches the set number, the winding diameter of the take-up drum is large enough, and the actual winding position is at the edge of the reasonable range compared to the guide roller. Figure 1 The status shown is worth noting that Figure 1 In order to clearly show the internal structure, the housing 51 is not fully shown. In actual state, the housing 51 should cover other structures.

[0036] When the power gear 41, the transmission gear 42, and the rack 43 are meshed with each other, the power gear 41 is in a rotating state. At this time, driven by the power gear 41, the power gear 41 and the transmission gear 42 climb up along the rack 43, thereby lifting the support frame 52 through the power gear 41 and the transmission gear 42, and then driving the structures related to the support frame 52 to rise together. As a result, the height of the winding drum begins to rise, so that the actual winding position returns to a reasonable range.

[0037] During the rising process of the reel, the elastic force accumulated in the support spring 31 begins to be gradually released, thereby assisting the power motor 2 to lift the support frame 52. As a result, the burden on the power motor 2 is reduced, which helps to extend the service life of the power motor 2. On the other hand, the reeling process is still in progress. When the reeled rubber anti-corrosion plate reaches 100 meters, the power motor 2 is controlled to stop, and the current reel can be removed, and then replaced with a new reel. Because the reel is only set between the active roller 11 and the driven roller 12, the operation of the above process is relatively easy. On the other hand, when the power motor 2 stops, the guide part 4412 of the reset trigger groove moves to a state of being in contact with the trigger protrusion 442. When the new reel is replaced, the power motor 2 is controlled to continue to operate. At this time, the transmission gear 42 continues to move toward the top of the rack 43, and the trigger plate 441 is continuously lifted, so that the guide part 4412 introduces the trigger protrusion 442 into the reset trigger groove. As the lifting process continues, under the action of the reset trigger groove slope, the trigger protrusion 442 pushes the trigger plate 441 to slide in the opposite direction, thereby driving the transmission gear 42 to disengage from the power gear 41 and the rack 43. At this point, the device is reset and the next round of winding can be carried out.

[0038] In summary, the present invention can effectively adjust the height of the winding drum, and the winding drum and the actual winding position are always within a reasonable range, thereby meeting the height control requirements of the winding drum. At the same time, the height control process of the present invention can be automatically carried out according to the winding progress, without the need for manual control by the staff, thereby effectively saving manpower, making the control more timely, and reducing operational errors. On the other hand, the winding of the rubber anti-corrosion plate and the lowering and lifting of the winding drum can be done only by the power motor 2 without other power sources. As a result, the structure of the device is more refined and the overall structure is more compact, which helps to reduce the space occupied by the device. Secondly, the rotation direction of the power motor 2 remains unchanged to complete the aforementioned process, without the need for the power motor 2 to reverse, which helps to simplify the supporting control system, simplify the control logic and help to extend the service life of the power motor 2.

[0039] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An automatic lifting mechanism for a rubber sheet take-up drum, characterized in that: include: Rotating mechanism (1), power motor (2), descending mechanism (3), lifting mechanism (4), mounting frame (5); The mounting frame (5) comprises a housing (51) and a supporting frame (52); The support frame (52) is slidably connected to the housing (51); The support frame (52) is connected to the rotating mechanism (1), the power motor (2), and the lifting mechanism (4); The descending mechanism (3) comprises a supporting spring (31); One end of the support spring (31) is connected to the housing (51), and the other end is connected to the support frame (52); The rotating mechanism (1) comprises a driving roller (11) and a driven roller (12); The active roller (11) and the driven roller (12) are in close contact with the winding drum; A first output gear (21) and a second output gear (22) are provided on the output end of the power motor (2); The first output gear (21) is meshed with the active roller (11) so as to drive the winding drum to rotate via the active roller (11); The lifting mechanism (4) comprises a power gear (41), a transmission gear (42), a rack (43), and a switching structure (44); The power gear (41) is drivingly connected to the second output gear (22); The transmission gear (42) is arranged between the power gear (41) and the rack (43); The transmission gear (42) is transmission-connected to the switching structure (44); When the support spring (31) is compressed to the limit position, the switching structure (44) can push the transmission gear (42) to mesh with the power gear (41) and the rack (43); When the transmission gear (42) moves toward the top end of the rack (43), the switching structure (44) can drive the transmission gear (42) to disengage from the power gear (41) and the rack (43).

2. The automatic lifting mechanism for the rubber sheet take-up drum according to claim 1 is characterized in that: The active roller (11) is rotatably connected to the support frame (52); The driven roller (12) is rotatably connected to the support frame (52); A gap is provided between the active roller (11) and the driven roller (12) for accommodating the winding drum; The power motor (2) is fixedly arranged on the support frame (52).

3. The automatic lifting mechanism for the rubber sheet take-up drum according to claim 1 is characterized in that: The descending mechanism (3) further comprises a stable base (32); The stabilizing base (32) is respectively arranged at two ends of the supporting spring (31); The end of the support spring (31) extends into the stable base (32); One of the stable bases (32) is connected to the housing (51); The other stable base (32) is connected to the support frame (52).

4. The automatic lifting mechanism for the rubber sheet take-up drum according to claim 1 is characterized in that: The power gear (41) is rotatably connected to the support frame (52); The power gear (41) and the second output gear (22) are sleeved with a transmission chain; The support frame (52) is provided with a through opening corresponding to the transmission chain.

5. The automatic lifting mechanism for the rubber sheet take-up drum according to claim 1 is characterized in that: The switching structure (44) comprises a trigger plate (441) and a trigger protrusion (442); The transmission gear (42) is rotatably connected to the trigger plate (441); The trigger plate (441) is slidably connected to the support frame (52); The trigger plate (441) is provided with a trigger slot (4411); An angle is set between the trigger slot (4411) and the vertical direction; The trigger protrusion (442) is fixedly connected to the housing (51); The trigger protrusion (442) corresponds to the trigger groove (4411); When the trigger protrusion (442) enters the trigger groove (4411), it can push the trigger plate (441) to slide relative to the support frame (52).

6. The automatic lifting mechanism for the rubber sheet take-up drum according to claim 5, characterized in that: The number of the trigger slots (4411) is two; The two trigger grooves (4411) are parallel to each other.

7. The automatic lifting mechanism for rubber sheet take-up drum according to claim 1, characterized in that: The trigger plate (441) is also provided with a guide portion (4412); The guide portion (4412) is arranged at the entrance end of the trigger slot (4411); The guide portion (4412) corresponds to the trigger protrusion (442) to guide the trigger protrusion (442) into the trigger groove (4411).

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