Cooling device for hot-rolled steel pipe production

Abstract

The utility model belongs to the field of steel pipe production equipment especially relates to a cooling device for hot rolled steel pipe production. Including frame and interval setting fixed tooth board on frame, be provided with movable tooth board between two fixed tooth boards of adjacent, the bottom of movable tooth board is provided with connecting rod, the both ends of connecting rod are close to movable tooth board and are provided with, connecting rod connects movable tooth board between fixed tooth board together, the bottom of frame still is provided with the drive mechanism for driving movable tooth board reciprocating motion, the drive mechanism includes setting drive rod in the bottom of connecting rod and setting drive shaft in the bottom of drive rod, drive shaft eccentricity sets up on drive disc, drive disc rotation sets up in frame, the utility model discloses through the segmentation of present movable tooth board is three sections, while, adjusts the diameter of drive disc, makes the reciprocating distance of movable tooth board change, thereby increases the pitch of steel pipe of high temperature section, improves the cooling efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of steel pipe production equipment, and in particular relates to a cooling device for hot-rolled steel pipe production. Background Technology

[0002] In the hot-rolled steel pipe production process, the cooling bed is a core hub connecting the high-temperature rolling process with the subsequent finishing process. Its role goes far beyond "cooling down"; it is also a key link in ensuring product quality, achieving process connection, controlling performance indicators, and avoiding safety risks.

[0003] Existing cooling beds mainly include chain-type cooling beds and walking-type cooling beds. Among them, the walking-type cooling bed achieves the cooling and movement of the steel pipes on the cooling bed by moving the movable toothed plate step by step under the drive of the offset wheel.

[0004] The existing walking beam cooling bed has a fixed moving distance for the steel pipe, which ensures that the steel pipe can move step by step on the saw teeth. However, this structure also limits the spacing of the steel pipe to be consistent at high temperature and low temperature, which also results in low cooling efficiency of the steel pipe. Utility Model Content

[0005] This invention addresses the technical problem of low cooling efficiency in existing walking beam cooling beds by providing a cooling device for hot-rolled steel pipe production that is reasonably designed, simple in structure, and capable of effectively adjusting the spacing between steel pipes at different time periods.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a cooling device for hot-rolled steel pipe production, including a frame and fixed toothed plates spaced apart on the frame. A movable toothed plate is provided between two adjacent fixed toothed plates. A connecting rod is provided at the bottom of the movable toothed plate, and the connecting rod is located near both ends of the movable toothed plate. The connecting rod connects the movable toothed plates between the fixed toothed plates. A drive mechanism for driving the movable toothed plates to reciprocate is also provided at the bottom of the frame. The drive mechanism includes a drive rod located at the bottom of the connecting rod and a drive shaft located at the bottom of the drive rod. The drive shaft is eccentrically mounted on a drive disc. The drive disc is rotatably mounted inside the frame. The movable toothed plate includes a first movable toothed plate, a second movable toothed plate, and a third movable toothed plate arranged sequentially along the long side of the fixed toothed plate. The connecting rod is respectively disposed at both ends of the first movable toothed plate, the second movable toothed plate, and the third movable toothed plate. The reciprocating distance of the first movable toothed plate, the second movable toothed plate, and the third movable toothed plate gradually decreases. The distance between the first movable toothed plate and the second movable toothed plate is the reciprocating distance of the first movable toothed plate minus the reciprocating distance of the third movable toothed plate. The distance between the second movable toothed plate and the third movable toothed plate is the reciprocating distance of the second movable toothed plate minus the reciprocating distance of the third movable toothed plate.

[0007] Preferably, an angle commutator is provided inside the frame, the drive disk is mounted on the output shaft of the angle commutator, a connecting shaft is provided between adjacent angle commutators, and a motor reducer is connected to the input end of any angle commutator.

[0008] Preferably, a spray pipe is also provided on the side wall of the fixed toothed plate near the first movable toothed plate, and an atomizing nozzle is provided on the spray pipe, with the atomizing nozzles spaced apart on the spray pipe.

[0009] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This utility model provides a cooling device for hot-rolled steel pipe production. By dividing the existing movable toothed plate into three sections and adjusting the diameter of the drive disc, the reciprocating distance of the movable toothed plate is changed, thereby increasing the spacing of the steel pipes in the high-temperature section and improving the cooling efficiency. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1This is a schematic diagram of the cooling device for hot-rolled steel pipe production provided in Example 1; Figure 2 A top view of the cooling device for hot-rolled steel pipe production provided in Example 1; Figure 3 This is a schematic diagram of the structure between the movable toothed plate and the drive mechanism provided in Embodiment 1; In the above figures, 1 is the frame; 11 is the fixed toothed plate; 2 is the first movable toothed plate; 3 is the second movable toothed plate; 4 is the third movable toothed plate; 5 is the connecting rod; 6 is the drive mechanism; 61 is the drive rod; 62 is the drive shaft; 63 is the drive disc; 64 is the angle reversing device; 65 is the connecting shaft; 66 is the motor reducer; 7 is the spray pipe; and 71 is the atomizing nozzle. Detailed Implementation

[0012] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0013] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0014] Example 1, such as Figures 1-3 As shown, this embodiment aims to address the technical problem that existing walking beam cooling beds cannot effectively adjust the spacing between steel pipes, thus affecting heat dissipation efficiency. Therefore, this embodiment provides a cooling device for hot-rolled steel pipe production, including a frame 1 and fixed toothed plates 11 spaced apart on the frame 1. Movable toothed plates are arranged between adjacent fixed toothed plates 11. Connecting rods 5 are arranged at the bottom of the movable toothed plates, near both ends of the movable toothed plates, connecting the movable toothed plates between the fixed toothed plates 11. A drive mechanism 6 for driving the reciprocating motion of the movable toothed plates is also provided at the bottom of the frame 1. The drive mechanism 6 includes a drive rod 61 at the bottom of the connecting rod 5 and a drive shaft 62 at the bottom of the drive rod 61. The drive shaft 62 is eccentrically mounted on a drive disc 63, which is rotatably mounted within the frame 1. Thus, through the rotation of the drive disc 63, the eccentric arrangement of the drive shaft 62 enables the reciprocating motion of the movable toothed plates, thereby achieving the lifting and placement of the steel pipes.

[0015] Considering that the heat dissipation of the cooling bed is mainly achieved through the convection of the steel pipes with the surrounding air, and the temperature difference between the steel pipes and the air creates heat dissipation, and because the existing steel pipes have a small spacing, the temperature difference of the air within the range is small, the current solution to this problem is mainly through air blowing. To further enhance the effect of air blowing, in this embodiment, the movable toothed plate includes a first movable toothed plate 2, a second movable toothed plate 3, and a third movable toothed plate 4 arranged sequentially along the long side of the fixed toothed plate 11. The connecting rods 5 are respectively arranged at both ends of the first movable toothed plate 2, the second movable toothed plate 3, and the third movable toothed plate 4, thus forming three movable modules.

[0016] In this embodiment, the reciprocating distances of the first movable toothed plate 2, the second movable toothed plate 3, and the third movable toothed plate 4 gradually decrease. Taking the tooth pitch of the fixed toothed plate 11 as an example, the first movable toothed plate 2 must ensure that the steel pipe moves three tooth pitches, that is, the steel pipe moves and is placed at the third tooth hole. The second movable toothed plate 3 is placed at the second tooth hole, and the third movable toothed plate 4 is placed at the first tooth hole, just like in the existing system. In this embodiment, the reciprocating distance is changed by controlling the size of the diameter of the drive disk 63. Of course, this is based on the condition that the distance between the drive shaft 62 and the edge of the drive disk 63 is equal. In this way, its distance from the center changes, thereby realizing the change of the reciprocating distance.

[0017] Because the reciprocating distance changes, to avoid interference during reciprocating motion, in this embodiment, the distance between the first movable tooth plate 2 and the second movable tooth plate 3 is the reciprocating distance of the first movable tooth plate 2 minus the reciprocating distance of the third movable tooth plate 4. That is, the distance between the first movable tooth plate 2 and the second movable tooth plate 3 is the distance between two teeth. In other words, the length of the first movable tooth plate 2 is less than the length of two teeth of the second movable tooth plate 3. The distance between the second movable tooth plate 3 and the third movable tooth plate 4 is the reciprocating distance of the second movable tooth plate 3 minus the reciprocating distance of the third movable tooth plate 4. The lengths of the second movable tooth plate 3 and the third movable tooth plate 4 are less than the length of one tooth of the third movable tooth plate 4. This ensures that no interference occurs when they move simultaneously.

[0018] To facilitate simultaneous control, in this embodiment, an angle commutator 64 is installed inside the frame 1, and a drive disk 63 is mounted on the output shaft of the angle commutator 64. A connecting shaft 65 is provided between adjacent angle commutators 64, and a motor reducer 66 is connected to the input end of any angle commutator 64. The motor reducer 66 can be installed on one side or both sides of the frame 1, depending on the specifications of the frame 1. A double-sided installation is preferred. When installed on both sides, the two motors can achieve high-precision synchronous control through master-slave control and encoder feedback.

[0019] In this way, by increasing the spacing between the steel pipes in the high-temperature section, the amount of air between the steel pipes is increased, which directly affects the heat convection efficiency and heat radiation efficiency between the steel pipes and the environment. The larger the spacing, the smaller the resistance to heat loss, the faster the cooling rate and the more uniform the cooling.

[0020] To further improve the cooling effect, a spray pipe 7 is also provided on the side wall of the fixed toothed plate 11 near the first movable toothed plate 2. The spray pipe 7 is equipped with atomizing nozzles 71, which are spaced apart on the spray pipe 7. The atomizing nozzles 71 can spray water or air. When spraying air, they can generate a turbulence effect, further improving the cooling efficiency. The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A cooling device for hot-rolled steel pipe production, comprising a frame and fixed toothed plates spaced apart on the frame, with movable toothed plates between adjacent fixed toothed plates, a connecting rod at the bottom of each movable toothed plate, the connecting rod being positioned near both ends of the movable toothed plates, the connecting rod connecting the movable toothed plates between the fixed toothed plates, and a drive mechanism at the bottom of the frame for driving the movable toothed plates to reciprocate, the drive mechanism comprising a drive rod at the bottom of the connecting rod and a drive shaft at the bottom of the drive rod, the drive shaft being eccentrically mounted on a drive disc, the drive disc being rotatably mounted within the frame, characterized in that... The movable toothed plate includes a first movable toothed plate, a second movable toothed plate, and a third movable toothed plate arranged sequentially along the long side of the fixed toothed plate. The connecting rod is respectively disposed at both ends of the first movable toothed plate, the second movable toothed plate, and the third movable toothed plate. The reciprocating distance of the first movable toothed plate, the second movable toothed plate, and the third movable toothed plate gradually decreases. The distance between the first movable toothed plate and the second movable toothed plate is the reciprocating distance of the first movable toothed plate minus the reciprocating distance of the third movable toothed plate. The distance between the second movable toothed plate and the third movable toothed plate is the reciprocating distance of the second movable toothed plate minus the reciprocating distance of the third movable toothed plate.

2. The cooling device for hot-rolled steel pipe production according to claim 1, characterized in that, An angle commutator is installed inside the frame, and the drive disk is installed on the output shaft of the angle commutator. A connecting shaft is provided between adjacent angle commutators, and a motor reducer is connected to the input end of any angle commutator.

3. The cooling device for hot-rolled steel pipe production according to claim 2, characterized in that, A spray pipe is also provided on the side wall of the fixed toothed plate near the first movable toothed plate, and an atomizing nozzle is provided on the spray pipe, with the atomizing nozzles spaced apart on the spray pipe.

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