A kind of compression roller device for high aspect ratio steel gas cylinder heat treatment

Abstract

The utility model discloses a kind of pressure roller devices for high thickness-diameter ratio steel gas cylinder heat treatment, quenching frame is attached on heat treatment production line, the pressure roller device has several pressure roller host computers attached on the top beam of quenching frame and spaced distribution with gas cylinder lifting ring, each pressure roller host computer is equipped with a pair of top arm unit controlled symmetrically telescopic towards gas cylinder lifting ring inner side, the end of each top arm unit is equipped with the bottle roller wheel contacted with the surface of steel gas cylinder, steel gas cylinder falls into quenching liquid state, and it is limited by the bottle roller wheel of down pressure state Anti-float, and it is driven in quenching liquid by part bottle roller wheel and rolls. The device can balance the influence of buoyancy on gas cylinder quenching operation, beneficial to reduce the deformation of steel gas cylinder;Through the transmission force exerted by bottle roller wheel, it gives steel gas cylinder axial rotation ability in non-sinking state, improves the uniform contact degree with quenching liquid, improves quenching uniformity;Break through the restriction of high thickness-diameter ratio product, improve product development direction.

Description

Technical Field

[0001] This utility model relates to an industrial production line optimization tooling, and more particularly to a pressure roller device for heat treatment of steel gas cylinders with high thickness-to-diameter ratio. Background Technology

[0002] The demand for new energy development has led to higher requirements for hydrogen storage and transportation containers. Typically, gas cylinder containers include blow-molded and fiber-coated composite cylinders, ordinary steel cylinders, and steel composite cylinders with larger volume and higher structural strength. Each type of gas cylinder container is often further subdivided into different specifications with varying lengths, wall thicknesses, and volumes.

[0003] As is well known, steel gas cylinders require a quenching process after high-temperature forming. This involves lifting the cylinder into a quenching tank and rotating it within the tank to achieve a uniform, controlled temperature across the entire surface. Traditionally, quenching operations involve immersing the cylinder in the quenching liquid using lifting rings, keeping the cylinder stationary while a stirring motor agitates the liquid to maintain continuous contact with the cylinder's surface. However, this uncontrolled contact results in a quenching effect that fails to meet desired performance requirements.

[0004] Normally, steel gas cylinders are quite heavy due to their thick walls. Therefore, when suspended and immersed in quenching liquid, they reliably sink to the bottom and contact the driving wheels at the bottom of the quenching tank, causing the heavy cylinder to rotate axially and achieve uniform quenching. However, with the increasing demand for container capacity, steel gas cylinders with a high thickness-to-diameter ratio (or thin-walled cylinders) with optimized structural strength have been developed. Due to their thinner walls, larger diameter, and sealed ends, the buoyancy of the steel gas cylinder in the quenching liquid is much greater than its own weight. This upward force causes significant deformation of the heated steel cylinder and leads to uneven quenching, affecting the final product quality. Summary of the Invention

[0005] The purpose of this invention is to provide a pressure roller device for heat treatment of steel gas cylinders with high thickness-to-diameter ratio, so as to improve the quality of the finished product of thin-walled steel gas cylinders after quenching.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pressure roller device for heat treatment of steel gas cylinders with high thickness-to-diameter ratio, which is mounted on the quenching rack of the heat treatment production line. The pressure roller device has several pressure roller main units mounted on the top hanging beam of the quenching rack and spaced apart from the gas cylinder hanging ring. Each pressure roller main unit is provided with a pair of top arm units that extend and retract symmetrically in a controlled manner toward the inside of the gas cylinder hanging ring. The end of each top arm unit is provided with a pressure roller that contacts the surface of the steel gas cylinder. When the steel gas cylinder falls into the quenching liquid, it is prevented from floating and limited by the pressure roller in the downward state, and is driven to roll in the quenching liquid by part of the pressure roller.

[0007] Furthermore, each top arm unit is provided with two linear rods that extend and retract in parallel axial directions, and the ends of the two linear rods facing the gas cylinder lifting ring are connected together by a bridging rod. The middle section of the bridging rod is provided with a wheel axle with a buffer assembly and a pressure roller mounted thereon; the ends of the two linear rods away from the gas cylinder lifting ring are connected to the output end of the drive cylinder.

[0008] Furthermore, the axle is formed as a flat-bottomed U-shaped three-section folding rod, wherein the first and last parallel sections are fitted with shock-absorbing springs and connected to the bridging connecting rod to form a buffer assembly, and the bottle-pressing roller is fitted and limited to the middle section of the axle.

[0009] Furthermore, a drive motor is provided on one side of the pressure roller host, and the output shaft of the drive motor is connected to the pressure roller of the top arm unit on the same side through a drive belt, thereby driving the steel gas cylinder to roll.

[0010] Furthermore, the lifting beam is provided with five or more cylinder lifting rings that are evenly distributed along the length of the steel cylinder to support and transport the displacement of the steel cylinder. The main body of the cylinder lifting rings and the pressure roller device moves up and down synchronously with the lifting beam and back and forth between the loading and unloading station and the quenching station of the steel cylinder.

[0011] Furthermore, the quenching liquid holding tank is provided with a main drive roller near the bottom surface, and the two ends of the main drive roller are connected to the drive motor and are driven to rotate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the device can uniformly apply downward pressure to the steel gas cylinder, balance the influence of buoyancy on the gas cylinder quenching operation, and help reduce the deformation of the steel gas cylinder; the power transmission applied by the pressure roller gives the steel gas cylinder the ability to rotate axially in a non-submerged state, improves the uniformity of contact with the quenching liquid, and enhances the quenching uniformity; it breaks through the limitations of high thickness-to-diameter ratio products and expands the product development direction. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall assembly structure of the improved pressure roller device in the steel gas cylinder quenching frame.

[0014] Figure 2 This is a schematic diagram of the initial floating state of the steel gas cylinder after the pressure roller device of this utility model is applied without pressing it tightly.

[0015] Figure 3 This is a schematic diagram of the semi-submerged quenched state when the steel gas cylinder is pressed with the pressure roller device of this utility model. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so as to make the technical solution of this utility model easier to understand and master, and thus to make a clearer definition of the protection scope of this utility model.

[0017] This invention addresses the unfavorable situation where thin-walled steel gas cylinders deform due to buoyancy during quenching. It designs and improves the structure of the quenching rack by adding a pressure roller device to act on the steel gas cylinder to be quenched, so that it can achieve the ideal performance and quality.

[0018] like Figures 1 to 3 In summary, the pressure roller device is mounted on the quenching rack 1 of the heat treatment production line, and the pressure roller device has several pressure roller main bodies 2 (five in the illustrated embodiment) mounted on the top suspension beam 11 of the quenching rack and spaced apart from the gas cylinder lifting ring 111. Each pressure roller main body is provided with a pair of top arm units (e.g., ...) that extend and retract symmetrically toward the inside of the gas cylinder lifting ring in a controlled manner. Figure 2 and Figure 3 (As shown in the diagram, they are arranged in pairs laterally). Each top arm unit has a pressure roller 21 at its end that contacts the surface of the steel gas cylinder. When the steel gas cylinder 3 falls into the quenching liquid, it is prevented from floating and limited by the pressure roller in the downward state, and is driven by a portion of the pressure roller to roll in the quenching liquid. As shown in the diagram, the lifting beam has seven cylinder lifting rings evenly distributed along the length of the steel gas cylinder to support and transport its displacement. It should be noted that the lifting beam is driven to move laterally back and forth between the loading station and the quenching station, and is simultaneously driven to move up and down in the height direction by the main drive lifting cylinder; therefore, the cylinder lifting rings and the pressure roller host will also move up and down synchronously. In this way, the steel gas cylinder to be quenched and with a high thickness-to-diameter ratio is fed into the cylinder lifting ring by the conveyor wheel at the loading station. During the lifting process of the cylinder lifting ring, the cylinder body, except for the shoulder and mouth, is evenly supported and its position adjusted. When it reaches the quenching station, the cylinder lifting ring is lowered. The above overview of the structure and function of the lifting beam and gas cylinder lifting ring is a common structure in the current industry for quenching racks; therefore, detailed illustrations and descriptions of the electrical control and drive components are omitted. This application focuses on using a lifting beam to install a pressure roller device facing the steel gas cylinder body, which significantly counteracts buoyancy after the cylinder falls into the quenching liquid and provides the steel gas cylinder with axial rotation capability to enhance its quenching performance.

[0019] Here, the extension distance of the cylinder-feeding rollers of the top arm unit is adjustable and set according to the specifications of the steel gas cylinder. More specifically, each top arm unit ( Figure 2 or Figure 3 The left or right portion shown has two linear rods 22 that extend and contract along parallel axes. Figure 1Taking the rightmost pressure roller as an example, the two linear rods are connected as one unit at the end facing the gas cylinder hanging ring via a bridging rod 23. The extension and retraction direction of the linear rods is locked by a clamping ring on the pressure roller, and the end of the linear rod away from the gas cylinder hanging ring is connected to a drive unit (preferably a cylinder type) for controlled extension and retraction, and the extension range can be adjusted and set by the drive unit. The middle section of the bridging rod 23 is equipped with a wheel axle 24 with a buffer assembly and a pressure roller 21 fitted on it. The wheel axle is formed into a flat-bottomed U-shaped three-section folded rod, with the first and last parallel sections fitted with shock-absorbing springs 25 and inserted into the bridging rod to form a buffer assembly. The pressure roller is fitted and limited to the middle section of the wheel axle. The ends of the first and last sections that protrude from the bridging rod are fitted with limit blocks, so although the shock-absorbing springs will push the entire wheel axle outward, the wheel axle can still be integrated with the bridging rod.

[0020] Furthermore, each of the aforementioned pressure roller main units is equipped with a drive motor 26 on one side, and the output shaft of the drive motor is connected to the pressure roller 21 of the top arm unit on the same side via a drive belt 27. When the pressure roller presses against the cylinder body, it can drive the steel cylinder to roll. From an optional implementation perspective, for cylindrical pressure rollers, the friction force of the drive belt on the cylinder body can be used to drive its rotation; while for I-shaped cylindrical pressure rollers that are narrow in the middle and wide at both ends, the power transmitted from the pressure roller to the drive belt is used to drive the steel cylinder to roll. At the same time, it is not necessary to press the steel cylinder down to the bottom, so that it contacts and is driven to rotate by the main drive roller 4 at the bottom of the original quenching pool (also known as the liquid holding tank). Here, the two ends of the main drive roller are connected to the drive motor 5 and are driven to rotate, which is suitable for quenching operations where steel cylinders with thick walls and large weight are directly submerged to meet the process requirements of outputting a large rotational driving force. That is, the correlation with the quenching object corresponding to this application is negligible.

[0021] In summary, the above description and detailed embodiments of the pressure roller device for heat treatment of high aspect ratio steel gas cylinders demonstrate that this solution possesses substantial features and advancements. The device can uniformly apply downward pressure to the steel gas cylinder, balancing the impact of buoyancy on the quenching process and reducing deformation. The transmission force applied by the pressure rollers enables the steel gas cylinder to rotate axially in a non-submerged state, improving the uniformity of contact with the quenching liquid and enhancing quenching uniformity. Furthermore, it overcomes the limitations imposed on high aspect ratio products, expanding the scope of product development.

[0022] In addition to the above embodiments, the present invention may have other implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A pressure roller device for heat treatment of high aspect ratio steel gas cylinders, mounted on the quenching rack of a heat treatment production line, characterized in that: The pressure roller device has several pressure roller main units mounted on the top beam of the quenching frame and spaced apart from the gas cylinder lifting ring. Each pressure roller main unit is equipped with a pair of top arm units that extend and retract symmetrically in a controlled manner toward the inside of the gas cylinder lifting ring. The end of each top arm unit is equipped with a pressure roller that contacts the surface of the steel gas cylinder. When the steel gas cylinder falls into the quenching liquid, it is prevented from floating and limited by the pressure roller in the downward state, and is driven to roll in the quenching liquid by part of the pressure roller.

2. The pressure roller device for heat treatment of high aspect ratio steel gas cylinders according to claim 1, characterized in that: Each top arm unit is equipped with two linear rods that extend and retract in parallel axial directions. The ends of the two linear rods facing the gas cylinder lifting ring are connected as one unit by a bridging rod. The middle section of the bridging rod is equipped with a wheel axle with a buffer assembly and a pressure roller mounted on it. The ends of the two linear rods away from the gas cylinder lifting ring are connected to the output end of the drive cylinder.

3. The pressure roller device for heat treatment of high aspect ratio steel gas cylinders according to claim 2, characterized in that: The axle is formed as a flat-bottomed U-shaped three-section folding rod, in which the first and last parallel sections are fitted with shock-absorbing springs and connected to the bridging connecting rod to form a buffer assembly, and the bottle-pressing roller is fitted and limited to the middle section of the axle.

4. The pressure roller device for heat treatment of high aspect ratio steel gas cylinders according to claim 1, characterized in that: One side of the pressure roller main unit is equipped with a drive motor, and the output shaft of the drive motor is connected to the pressure roller of the top arm unit on the same side through a drive belt, which drives the steel gas cylinder to roll.

5. The pressure roller device for heat treatment of high aspect ratio steel gas cylinders according to claim 1, characterized in that: The lifting beam is provided with five or more cylinder lifting rings that are evenly distributed along the length of the steel cylinder to support and transport the displacement of the steel cylinder. The main body of the cylinder lifting rings and the pressure roller device moves up and down synchronously with the lifting beam and back and forth between the loading and unloading station and the quenching station of the steel cylinder.

6. The pressure roller device for heat treatment of high aspect ratio steel gas cylinders according to claim 1, characterized in that: The quenching liquid holding tank is equipped with a main drive roller near the bottom surface, and the two ends of the main drive roller are connected to the drive motor and are driven to rotate.

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