Cover plate lifting mechanism for bead wire hydrochloric acid tank

Abstract

The utility model discloses a cover plate lifting mechanism for a bead wire hydrochloric acid tank, which comprises a hydrochloric acid tank main body and a cover plate covering a tank opening of the hydrochloric acid tank main body, one side of the cover plate is provided with a counterweight unit, the counterweight unit is linked with the cover plate through a transmission assembly, the transmission assembly comprises a chain wheel group and a driving chain surrounding the chain wheel group, and the driving chain is connected with the cover plate through the chain wheel group. One end of the driving chain is connected with the upper end of the cover plate, the other end of the driving chain is connected with the counterweight unit, the counterweight unit and the cover plate form synchronous reverse lifting through the driving chain, and the cover plate is driven to be switched between a closing position and an opening position covering the notch. The cover plate can be lifted, manpower consumption is reduced, and the risk of pollution caused by contact between the lower end of the cover plate and a placement surface is avoided.

Description

Technical Field

[0001] This utility model relates to the field of tire bead wire production technology, specifically to a cover plate lifting mechanism for a hydrochloric acid tank for tire bead wire. Background Technology

[0002] As a key structural material in tire manufacturing, the adhesion between the bead cord and rubber directly affects the tire's mechanical properties and lifespan. Hydrochloric acid treatment is a core step in the surface treatment of the bead cord. Through a chemical reaction, it removes oxide layers (such as rust and iron oxide), oil, and impurities from the steel wire surface, eliminating factors that negatively impact adhesion. Furthermore, the acid etching process creates a micro-rough structure on the metal surface, significantly improving the bonding effect between the rubber and the metal matrix by increasing the contact surface area, thereby ensuring the bonding strength of the composite material interface.

[0003] In the hydrochloric acid treatment process, hydrochloric acid tanks are commonly used to treat tire bead lines. Existing hydrochloric acid tanks are rectangular, with a detachable cover plate at the top to cover the tank opening and reduce acid mist escape. When working inside the hydrochloric acid tank, the cover plate needs to be lifted. Because the cover plate is large, typically exceeding one meter in length, and lacks a dedicated transfer mechanism, moving it requires multiple people, resulting in significant manpower consumption. Furthermore, the lower part of the removed cover plate is easily contaminated by contact with the surface it touches, increasing cleaning costs and potentially introducing secondary contamination risks. Utility Model Content

[0004] The purpose of this utility model is to provide a cover lifting mechanism for a hydrochloric acid tank with a tire bead line, which can realize the lifting and lowering of the cover, reduce manpower consumption, and avoid the risk of contamination caused by the lower end of the cover contacting the placement surface.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a cover lifting mechanism for a hydrochloric acid tank with a tire bead line, comprising a hydrochloric acid tank body and a cover plate covering its opening, characterized in that: a counterweight unit is provided on one side of the cover plate, the counterweight unit is linked to the cover plate through a transmission assembly, the transmission assembly includes a sprocket assembly and a drive chain surrounding the sprocket assembly, one end of the drive chain is connected to the upper end of the cover plate, and the other end is connected to the counterweight unit, the counterweight unit and the cover plate move in opposite directions synchronously through the drive chain, driving the cover plate to switch between a closed position and an open position covering the opening of the tank.

[0006] A further improvement of this utility model is that the transmission assembly includes a pair of support rods arranged above the main body of the hydrochloric acid tank along the width direction thereon, and a first rotating shaft and a second rotating shaft are rotatably connected between the two support rods. The sprocket assembly includes two first sprockets coaxially spaced on the first rotating shaft and two second sprockets coaxially spaced on the second rotating shaft. The drive chain has two branches, one end of each drive chain is connected to the cover plate, and the other end passes around the corresponding first and second sprockets and is connected to the counterweight unit.

[0007] A further improvement of this utility model is that two third sprockets are coaxially spaced on the first rotating shaft, and the transmission assembly also includes two synchronous chains. One end of the synchronous chain is connected to the counterweight unit, and the other end passes around the corresponding third sprocket and is connected to the upper end of the cover plate. Each synchronous chain and the corresponding drive chain are located on the left and right sides of the cover plate, respectively, and the drive chains and synchronous chains on both sides are symmetrically distributed.

[0008] A further improvement of this utility model is that auxiliary support rods are respectively provided on the sides of the two support rods that are far apart from each other, the two auxiliary support rods are symmetrically arranged, and a telescopic rod is provided between the auxiliary support rod and the cover plate. The fixed end of the telescopic rod is connected to the cover plate, and its telescopic end is vertically upward and connected to the lower end face of the support rod.

[0009] A further improvement of this utility model is that a guide tube is provided between the auxiliary support rod and the cover plate. The guide tube includes an outer sliding tube vertically disposed on the lower end face of the auxiliary support rod and an inner sliding tube disposed on the upper end face of the cover plate. The inner sliding tube is slidably connected to the outer sliding tube.

[0010] A further improvement of this utility model is that an acid mist recovery pipe is provided above the support rod, a first branch pipe is provided on the acid mist recovery pipe, and a second branch pipe connected to the hydrochloric acid tank body is provided on the cover plate. The first branch pipe and the second branch pipe are connected by a flexible pipe.

[0011] A further improvement of this utility model is that a bracket is provided on one side of the hydrochloric acid tank body, the support rod is set on the bracket, and the bracket is symmetrically provided with limiting grooves extending in the vertical direction. The two sides of the counterweight unit are slidably connected in the two limiting grooves to limit the lifting trajectory of the counterweight unit.

[0012] A further improvement of this utility model is that the counterweight unit includes a counterweight box and counterweight blocks detachably installed therein, and the upper end of the counterweight box is provided with an opening for adjusting the number of counterweight blocks.

[0013] A further improvement of this utility model is that the ratio of the mass of the counterweight unit to the mass of the cover plate is 0.8:1 to 1.2:1.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention achieves the lifting and lowering of the cover plate through a counterweight and chain drive. When the cover plate needs to be lifted, the counterweight unit descends, and its weight is used to overcome the force of the counterweight unit to rise smoothly, achieving labor-saving lifting. After the cover plate is lifted to a certain extent, the counterweight unit enables the cover plate to automatically remain suspended, reducing the need for manual labor and avoiding the risk of secondary pollution caused by the lower end of the cover plate contacting the placement surface when lifting the cover plate in existing methods.

[0016] This invention, by setting a third sprocket and a synchronous chain, and through the cooperation of two synchronous chains and two drive chains, keeps the cover plate horizontal during the lifting and lowering process, avoids its tilting, and ensures the smooth opening and closing of the cover plate.

[0017] This invention uses a guide tube to constrain the lifting direction of the cover plate, preventing excessive shaking and collisions during lifting. The telescopic rod further controls the lifting of the cover plate, providing power, reducing manpower consumption, effectively controlling the lifting speed, and improving safety.

[0018] This invention, by incorporating a flexible tube, can adapt to the lifting and lowering of the cover plate, ensuring sealing during the lifting process, collecting and treating acid mist, reducing environmental pollution, and maintaining the stability of acid concentration in the tank. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a partially enlarged schematic diagram of the structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the guide tube of this utility model.

[0022] Figure 4 This is a partially enlarged schematic diagram of the transmission component of this utility model.

[0023] In the diagram, 1-hydrochloric acid tank body, 2-cover plate, 3-counterweight unit, 4-drive chain, 5-support rod, 6-first rotating shaft, 7-second rotating shaft, 8-first sprocket, 9-second sprocket, 10-third sprocket, 11-synchronous chain, 12-auxiliary support rod, 13-telescopic rod, 14-outer sliding pipe, 15-inner sliding pipe, 16-acid mist recovery pipe, 17-first branch pipe, 18-second branch pipe, 19-flexible pipe, 20-limiting groove, 21-counterweight box. Detailed Implementation

[0024] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1: Combination Figures 1-4 It is known that a cover lifting mechanism for a hydrochloric acid tank for tire bead lines includes a hydrochloric acid tank body 1 and a cover plate 2 covering its opening. A counterweight unit 3 is provided on one side of the cover plate 2. The counterweight unit 3 is linked to the cover plate 2 through a transmission assembly. The transmission assembly includes a sprocket assembly and a drive chain 4 surrounding the sprocket assembly. One end of the drive chain 4 is connected to the upper end of the cover plate 2, and the other end is connected to the counterweight unit 3. The counterweight unit 3 and the cover plate 2 move in opposite directions synchronously through the drive chain 4, and the drive cover plate 2 switches between a closed position and an open position covering the opening of the tank.

[0026] The transmission assembly includes a pair of support rods 5 arranged above the hydrochloric acid tank body 1 along the width direction. A first rotating shaft 6 and a second rotating shaft 7 are rotatably connected between the two support rods 5. The sprocket assembly includes two first sprockets 8 arranged coaxially at intervals on the first rotating shaft 6 and two second sprockets 9 arranged coaxially at intervals on the second rotating shaft 7. There are two drive chains 4. One end of each drive chain 4 is connected to the cover plate 2, and the other end passes around the corresponding first sprocket 8 and second sprocket 9 and is connected to the counterweight unit 3.

[0027] Two third sprockets 10 are coaxially spaced on the first rotating shaft 6. The transmission assembly also includes two synchronous chains 11. One end of each synchronous chain 11 is connected to the counterweight unit 3, and the other end passes over the corresponding third sprocket 10 and connects to the upper end of the cover plate 2. Each synchronous chain 11 and its corresponding drive chain 4 are located on the left and right sides of the cover plate 2, respectively, and the drive chains 4 and synchronous chains 11 on both sides are symmetrically distributed. The synchronous chains and drive chains form a four-point suspension structure, which keeps the cover plate 2 horizontal during lifting and lowering. Preferably, the synchronous chains 11 and drive chains 4 are hinged to the cover plate.

[0028] Auxiliary support rods 12 are provided on the opposite sides of the two support rods 5, and the two auxiliary support rods 12 are symmetrically arranged. A telescopic rod 13 is provided between the auxiliary support rods 12 and the cover plate 2. The fixed end of the telescopic rod 13 is connected to the cover plate 2, and its telescopic end is vertically upward and connected to the lower end face of the support rod 5. Preferably, the telescopic rod 13 is a pneumatic telescopic rod. Optionally, the extended end of the telescopic rod 13 is hinged to the auxiliary support rod 12. When the cover plate is in the open or closed state, the telescopic rod transfers part of the weight of the cover plate to the support structure of the hydrochloric acid tank body 1 through the auxiliary support rods 12, reducing the load on the transmission chain and sprocket and extending their service life. In extreme cases (such as chain breakage), the rigid structure of the telescopic rod can serve as an emergency support to prevent the cover plate from falling uncontrollably due to gravity, avoiding personal injury or equipment damage.

[0029] A guide tube is also provided between the auxiliary support rod 12 and the cover plate 2. The guide tube includes an outer sliding tube 14 vertically arranged on the lower end face of the auxiliary support rod 12 and an inner sliding tube 15 arranged on the upper end face of the cover plate 2. The inner sliding tube 15 and the outer sliding tube 14 are slidably connected.

[0030] An acid mist recovery pipe 16 is provided above the support rod 5. A first branch pipe 17 is provided on the acid mist recovery pipe 16, and a second branch pipe 18 connected to the hydrochloric acid tank body 1 is provided on the cover plate 2. The first branch pipe 17 and the second branch pipe 18 are connected by a flexible pipe 19. Preferably, the flexible pipe 19 is a corrugated pipe, and its two ends are connected to the first branch pipe 17 and the second branch pipe 18 through flanges.

[0031] Preferably, the acid mist recovery pipeline 16 is connected to the pickling tower to treat the acid mist using existing equipment on the production line.

[0032] A support frame is provided on one side of the hydrochloric acid tank body 1, and a support rod 5 is mounted on the support frame. Symmetrical limiting grooves 20 extending vertically are provided on the support frame. The two sides of the counterweight unit 3 are slidably connected within the two limiting grooves 20 to limit the lifting trajectory of the counterweight unit. The descent of the counterweight unit 3 is limited by the height of the bottom of the limiting grooves 20, thereby limiting the upper limit of the cover plate 2. The further upward movement of the counterweight unit 3 is limited by the contact between the cover plate 2 and the hydrochloric acid tank body 1.

[0033] The support frame is equipped with a rectangular limiting frame consisting of four welded vertical steel sections and a rectangular frame located at the bottom of the vertical steel sections, the inner opening of which forms a vertically extending limiting groove 20. Preferably, a buffer pad is provided at the bottom of the limiting groove 20. The auxiliary support rod 12 and the support rod 5 are both set on the support frame on one side of the hydrochloric acid tank body 1.

[0034] The counterweight unit 3 includes a counterweight box 21 and several counterweight blocks that can be detachably installed inside it. The upper end of the counterweight box 21 is provided with an opening for adjusting the number of counterweight blocks.

[0035] The mass ratio of the counterweight unit 3 to the cover plate 2 is 0.8:1 to 1.2:1. During lifting and lowering, the potential energy change of the cover plate is offset by the counterweight unit's reverse movement. Mass ratio <1 (e.g., 0.8:1): The counterweight is slightly lighter, the cover plate's own weight dominates the descent, and the pneumatic telescopic rod needs to provide additional downward pressure. Mass ratio >1 (e.g., 1.2:1): The counterweight is slightly heavier, the cover plate rises more easily, suitable for frequent opening scenarios.

[0036] The working principle of the cover lifting mechanism for the hydrochloric acid tank of the tire bead line provided by the utility model is as follows:

[0037] When it is necessary to open the cover plate 2, the control telescopic rod 13 retracts, the cover plate 2 rises and the counterweight unit 3 descends. When the cover plate is raised to a certain extent, the counterweight unit 3 causes the cover plate 2 to rise automatically. At this time, the telescopic rod 13 plays an auxiliary role in limiting its rising speed. The counterweight unit 3 enables the cover plate 2 to be automatically kept suspended. When it is necessary to close the cover plate 2, the control pneumatic telescopic rod 13 extends, and the cover plate 2 descends smoothly against the force of the counterweight unit 3. When the cover plate descends to a certain extent, it covers the opening of the hydrochloric acid tank body 1 and seals it.

[0038] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A cover lifting mechanism for a hydrochloric acid tank with a tire bead line, comprising a hydrochloric acid tank body (1) and a cover plate (2) covering its opening, characterized in that: A counterweight unit (3) is provided on one side of the cover plate (2). The counterweight unit (3) is linked with the cover plate (2) through a transmission assembly. The transmission assembly includes a sprocket set and a drive chain (4) surrounding the sprocket set. One end of the drive chain (4) is connected to the upper end of the cover plate (2), and the other end is connected to the counterweight unit (3). The counterweight unit (3) and the cover plate (2) move in opposite directions synchronously through the drive chain (4), driving the cover plate (2) to switch between the closed position and the open position of the covered slot.

2. The cover plate lifting mechanism for the hydrochloric acid tank of the tire bead line according to claim 1, characterized in that: The transmission assembly includes a pair of support rods (5) arranged above the hydrochloric acid tank body (1) along the width direction. A first rotating shaft (6) and a second rotating shaft (7) are rotatably connected between the two support rods (5). The sprocket assembly includes two first sprockets (8) arranged coaxially at intervals on the first rotating shaft (6) and two second sprockets (9) arranged coaxially at intervals on the second rotating shaft (7). The drive chain (4) has two branches. One end of each drive chain (4) is connected to the cover plate (2), and the other end passes around the corresponding first sprocket (8) and second sprocket (9) and is connected to the counterweight unit (3).

3. The cover plate lifting mechanism for the hydrochloric acid tank of the tire bead line according to claim 2, characterized in that: Two third sprockets (10) are coaxially spaced on the first rotating shaft (6). The transmission assembly also includes two synchronous chains (11). One end of the synchronous chain (11) is connected to the counterweight unit (3), and the other end passes around the corresponding third sprocket (10) and is connected to the upper end of the cover plate (2). Each synchronous chain (11) and the corresponding drive chain (4) are located on the left and right sides of the cover plate (2), and the drive chains (4) and synchronous chains (11) on both sides are symmetrically distributed.

4. A cover lifting mechanism for a hydrochloric acid tank along a tire bead line according to claim 2, characterized in that: Auxiliary support rods (12) are provided on the side of the two support rods (5) that are far apart from each other. The two auxiliary support rods (12) are symmetrically arranged. A telescopic rod (13) is provided between the auxiliary support rod (12) and the cover plate (2). The fixed end of the telescopic rod (13) is connected to the cover plate (2), and its telescopic end is vertically upward and connected to the lower end face of the support rod (5).

5. A cover lifting mechanism for a hydrochloric acid tank along a tire bead line according to claim 4, characterized in that: A guide tube is also provided between the auxiliary support rod (12) and the cover plate (2). The guide tube includes an outer sliding tube (14) vertically arranged on the lower end face of the auxiliary support rod (12) and an inner sliding tube (15) arranged on the upper end face of the cover plate (2). The inner sliding tube (15) is slidably connected to the outer sliding tube (14).

6. A cover lifting mechanism for a hydrochloric acid tank along a tire bead line according to claim 2, characterized in that: An acid mist recovery pipe (16) is provided above the support rod (5). A first branch pipe (17) is provided on the acid mist recovery pipe (16). A second branch pipe (18) is provided on the cover plate (2) and communicates with the hydrochloric acid tank body (1). The first branch pipe (17) and the second branch pipe (18) are connected by a flexible pipe (19).

7. A cover lifting mechanism for a hydrochloric acid tank along a tire bead line according to claim 2, characterized in that: A bracket is provided on one side of the hydrochloric acid tank body (1), and the support rod (5) is set on the bracket. The bracket is symmetrically provided with limiting grooves (20) extending in the vertical direction. The two sides of the counterweight unit (3) are slidably connected in the two limiting grooves (20) to limit the lifting trajectory of the counterweight unit.

8. A cover lifting mechanism for a hydrochloric acid tank along a tire bead line according to claim 1, characterized in that: The counterweight unit (3) includes a counterweight box (21) and counterweight blocks that can be detachably installed therein. The upper end of the counterweight box (21) is provided with an opening for adjusting the number of counterweight blocks.

9. A cover lifting mechanism for a hydrochloric acid tank along a tire bead line according to claim 1, characterized in that: The mass ratio of the counterweight unit (3) to the mass of the cover plate (2) is 0.8:1 to 1.2:1.

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