Upper blocking plate mechanism of centrifugal machine for machining central pipe and reduction tank

Abstract

The utility model provides an upper closure plate mechanism of a centrifugal machine for processing a central pipe and a reduction tank, which comprises a base, a swing mechanism and a tensioning mechanism, the swing mechanism comprises a telescopic shaft, a short arm, a long cantilever, a swing oil cylinder and an advancing and retreating oil cylinder, the short arm is vertically fixed in the middle of the telescopic shaft, and the long cantilever is vertically fixed at one end of the telescopic shaft; the telescopic shaft is rotatably arranged on the base in a penetrating manner; the middle of the swing oil cylinder is hinged to the base, and the tail end of a cylinder rod of the swing oil cylinder is connected with a short arm of the swing mechanism. A cylinder sleeve of the advancing and retreating oil cylinder is fixed to the base and is parallel to the telescopic shaft, and the tail end of a cylinder rod of the advancing and retreating oil cylinder is fixed to the end, away from the long cantilever, of the telescopic shaft. The end, away from the telescopic shaft, of the long cantilever is connected with a tensioning mechanism used for clamping a blocking plate. The upper blocking plate mechanism of the centrifugal machine for machining the central pipe and the reduction tank is low in cost, simple in structure, convenient to operate and capable of achieving the automatic blocking plate feeding function of the centrifugal machine for machining the central pipe and the reduction tank.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifuge technology especially relates to a kind of upper blocking plate mechanism of centrifuge for center tube and reduction tank processing. BACKGROUND

[0002] For preventing molten steel splashing out when centrifuging and ensuring the shaping after cooling, the blocking plate capable of automatic installation and disassembly is arranged at one end or even two ends of centrifuge main tube mold during the working of centrifuge for center tube and reduction tank processing, and the surface of blocking plate is sprayed with refractory coating in advance to prevent molten steel from adhering to blocking plate. The upper blocking plate mechanism in current technology is mostly in the form of crane, and the upper blocking plate crane in this form not only has huge equipment manufacturing cost, but also increases the cost of equipment maintenance due to the complex structure of equipment, and the positioning control operation between blocking plate and centrifuge main tube mold during the process of blocking plate on crane is very complex and difficult to realize. Therefore, a new type of upper blocking plate mechanism is needed to solve the above problems. SUMMARY

[0003] The utility model discloses a kind of upper blocking plate mechanisms of centrifuge for center tube and reduction tank processing, and the mechanism is low in cost, simple in structure, easy to operate, and can realize the automatic upper blocking plate function of centrifuge for center tube and reduction tank processing.

[0004] It should be noted that, in the utility model, unless otherwise specified, the specific meaning of "including" involved in the composition limitation and description includes both open "including", "containing" and the like and their similar meanings, and closed "consisting of", "consisting of" and the like and their similar meanings.

[0005] To achieve the above object, the utility model adopts the technical scheme: a kind of upper blocking plate mechanism of centrifuge for center tube and reduction tank processing, including base, swing mechanism and tensioning mechanism, the swing mechanism includes telescopic shaft, short arm, long cantilever, swing oil cylinder and in-and-out oil cylinder, the short arm is vertically fixed in telescopic shaft middle part, and the long cantilever is vertically fixed in telescopic shaft one end;Telescopic shaft is rotatably arranged on base;The middle part of swing oil cylinder is hinged on base, and the cylinder rod tail end is connected with the short arm of swing mechanism, and the swing oil cylinder can push short arm, so that telescopic shaft rotates and in turn drives long cantilever to rotate;

[0006] The cylinder sleeve of in-and-out oil cylinder is fixed on base, and is parallel with telescopic shaft, and the cylinder rod tail end of in-and-out oil cylinder is fixed with the one end of telescopic shaft away from long cantilever, and in-and-out oil cylinder can push telescopic shaft to move along the axial direction, in turn drives long cantilever to move along the axial direction;

[0007] One end of the long cantilever away from the telescopic shaft is connected to a tensioning mechanism for clamping the blocking plate.

[0008] Furthermore, the included angle between the short arm and the long cantilever is 120-160°.

[0009] Furthermore, the tensioning mechanism includes a cam device with a V-shaped wheel, a spring return device, a pawl device, a transmission shaft and a tensioning cylinder. The two ends of the transmission shaft are respectively connected to the pawl device and the tensioning cylinder rod. The pawl device cooperates with the cam device, and the rotation of the pawl device can realize the rotation of the cam device. One end of the spring return device is fixed on the cam device, and the other end is fixed on the frame.

[0010] The tensioning mechanism achieves clamping and loosening of the blocking plate by expanding and contracting the V-shaped wheel. Specifically, when the blocking plate needs to be clamped, the rod of the tensioning cylinder is first slowly extended, which drives the drive shaft to rotate. The rotation of the drive shaft drives the rotation of the pusher mechanism, which in turn drives the rotation of the cam mechanism. There are three cam mechanisms, evenly distributed along the circumference of the frame. The cam mechanism is equipped with a spring return mechanism, which also contains a V-shaped wheel. The rotation of the cam mechanism is equivalent to driving the V-shaped wheel to swing, which also stretches the spring return mechanism, thereby expanding the range of the V-shaped wheel in the circumferential direction, thereby clamping the blocking plate.

[0011] When the blocking plate needs to be loosened, the above-mentioned action is performed in the opposite direction, and the contraction of the spring reset device and the rotation of the pusher claw device simultaneously complete the reset of the cam device.

[0012] Furthermore, at the end of the telescopic shaft with a long cantilever, an auxiliary support mechanism is connected to the shaft end by bolts, which greatly reduces the risk of overturning of the entire mechanism due to the load under extreme working conditions of a heavy-loaded long cantilever, thereby greatly improving the reliability and safety performance of the mechanism.

[0013] Furthermore, the shaft end auxiliary support mechanism includes a V-shaped wheel and a slide rail fixed to the ground, and the V-shaped wheel engages with the slide rail.

[0014] Furthermore, protective sleeves are provided at both ends of the telescopic shaft, and the protective sleeves include but are not limited to triple-proof cloth high-temperature resistant protective sleeves.

[0015] Because the molten steel needs to be prevented from splashing during centrifugation and to ensure that it forms after cooling, a baffle that can be automatically installed and removed is installed at one or both ends of the centrifuge main tube mold. The baffle is pre-sprayed with a refractory coating to prevent the molten steel from sticking to the baffle. Therefore, the baffle must be precisely positioned each time it is removed from the tube mold and reinstalled. This ensures that the baffle and the tube mold are aligned at the same center each time to ensure the quality of the molten steel after centrifugal cooling.

[0016] Due to the large weight and volume of the blocking plate, and the fact that it needs to be moved to a position far from the center of the pipe mold after disassembly, the upper blocking plate mechanism needs to be able to overcome the extreme working conditions of heavy load and long cantilever. Therefore, a set of shaft end auxiliary support mechanisms is connected to the end of the telescopic shaft of the cylinder advance and retreat device through bolts, which greatly reduces the risk of overturning caused by the load to the entire mechanism and improves the reliability and safety performance of the mechanism.

[0017] Compared with the prior art, the upper baffle mechanism of the present invention for centrifuges used for center tube and reduction tank processing has the following advantages: the upper baffle mechanism of this structural form has a simple structure, ingenious design, and reasonable layout. The present invention is a new upper baffle mechanism that can realize automatic installation and removal of the baffle. It is driven by an oil cylinder through three actions, and smoothly and reliably realizes the automatic upper baffle function of the center tube reduction tank centrifuge, improving equipment reliability, reducing manufacturing and maintenance costs, and at the same time ensuring product quality. The upper baffle mechanism of the present invention is particularly suitable for the field of center tube reduction tank centrifuges and has a very broad market prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the upper blocking plate mechanism of a centrifuge used for processing the central tube and reduction tank;

[0019] Figure 2 It is a top view of the swing mechanism;

[0020] Figure 3 Schematic diagram of the structure of the shaft end auxiliary support mechanism;

[0021] Figure 4 Schematic diagram of the tensioning mechanism Figure 1 ;

[0022] Figure 5 Schematic diagram of the tensioning mechanism Figure 2 ;

[0023] Figure 6 Schematic diagram of the tensioning mechanism in the released state. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly specified and specifically limited. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0026] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application.

[0027] Example

[0028] This embodiment discloses an upper blocking plate mechanism for a centrifuge used for processing a central tube and a reduction tank, such as Figure 1-6 As shown, it includes a base 1, a swing mechanism and a tensioning mechanism 2. The swing mechanism includes a telescopic shaft 3, a short arm 4, a long cantilever 5, a swing cylinder 6 and an advance and retreat cylinder 7. The short arm 4 is vertically fixed to the middle of the telescopic shaft 3, and the long cantilever 5 is vertically fixed to one end of the telescopic shaft 3; the angle between the short arm 4 and the long cantilever 5 is 160°. The telescopic shaft 3 is passed through the base 1, and the telescopic shaft 3 can rotate along the axis and can slide along the axial direction. The middle part of the swing cylinder 6 is hinged to the base 1, and the end of its cylinder rod is connected to the short arm 4 of the swing mechanism. The swing cylinder 6 can push the short arm 4 to rotate the telescopic shaft 3 and then drive the long cantilever 5 to rotate;

[0029] The cylinder sleeve of the forward and backward oil cylinder 7 is fixed on the base 1 and is parallel to the telescopic shaft 3. The cylinder rod end of the forward and backward oil cylinder 7 is fixed to the end of the telescopic shaft 3 away from the long cantilever 5. The forward and backward oil cylinder 7 can push the telescopic shaft 3 to move axially, thereby driving the long cantilever 5 to slide axially.

[0030] The tensioning mechanism 2 includes a frame, a pusher pawl assembly 23, a transmission shaft 22, a tensioning cylinder 21, three cam assemblies 24 with V-shaped wheels 25, and three spring return assemblies 26. The end of the long cantilever 5, away from the telescopic shaft 3, is fixed to the frame of the tensioning mechanism 2. The transmission shaft 22 extends through the frame, with one end coaxially fixed to the pusher pawl assembly 23 and the other end connected to the cylinder rod of the tensioning cylinder 21 via a connecting rod. The cylinder barrel of the tensioning cylinder 21 is fixed to the frame. The pusher pawl assembly 23 is provided with three grooves, which respectively engage with the three cam assemblies 24. Rotation of the pusher pawl assembly 23 drives the rotation of the cam assemblies 24. One end of the spring return assemblies 26 is fixed to the cam assemblies 24, and the other end is fixed to the frame.

[0031] The end of the telescopic shaft 3, equipped with the long cantilever 5, is bolted to an auxiliary shaft-end support mechanism 9. This significantly reduces the risk of the entire mechanism tipping due to the heavy load of the long cantilever 5 under extreme operating conditions, significantly improving the reliability and safety of the mechanism. The auxiliary shaft-end support mechanism 9 includes a V-shaped wheel and a ground-fixed slide rail. The upper end of the V-shaped wheel is fixed to the telescopic shaft 3, and the lower end engages the slide rail.

[0032] Both ends of the telescopic shaft 3 are covered with protective sleeves 10, which are high-temperature resistant protective sleeves made of three-proof cloth.

[0033] The upper baffle mechanism of this embodiment of the utility model operates as follows: Before the pouring machine of the centrifuge used for center tube and reduction tank processing pours molten steel into the tube mold, the V-shaped wheel on the tensioning mechanism firmly supports the baffle (the outer surface of which is sprayed with a refractory coating to prevent molten steel from sticking) due to the compression force of the tensioning cylinder. Afterwards, the swinging cylinder rod of the swinging mechanism retracts, driving the tensioning mechanism to swing together. Because the positional relationship between the upper baffle mechanism and the centrifugal main machine tube mold is guaranteed by standard processing equipment, the baffle and the centrifugal main machine tube mold are already concentric at this time. Finally, the forward and backward cylinder rods extend to send the blocking plate to the centrifugal main machine tube mold and fit them together. Several clamping devices are arranged in the circumferential direction of the centrifugal main machine tube mold. Under the combined action of the gravity and centrifugal force of the clamping devices, the blocking plate will be firmly fixed on the centrifugal main machine tube mold. At this time, the tensioning cylinder rod of the tensioning mechanism retracts, so that the V-shaped wheel on the tensioning mechanism is separated from the blocking plate, and the forward and backward cylinder rods return to their original positions. After that, the swinging cylinder rod of the swinging mechanism extends to the end position, waiting for the centrifugal main machine in the central tube reduction tank to be poured, cooled and pulled out before returning to the entire set of working procedures.

[0034] Among them, the working principle of the tensioning mechanism 2 is as follows: when the blocking plate 8 needs to be clamped, the cylinder rod of the tensioning cylinder 21 is first slowly extended, which will drive the transmission shaft 22 to rotate, and the rotation of the transmission shaft 22 drives the rotation of the pusher claw device 23, and the rotation of the pusher claw device 23 drives the rotation of the cam device 24. There are three cam devices 24, which are evenly distributed on the frame in the circumferential direction. A spring reset device 26 is hung on the cam device 24, and the cam device 24 also contains a V-shaped wheel 25. The rotation of the cam device 24 is equivalent to driving the V-shaped wheel 25 to swing, and also stretching the spring reset device 26. At this time, the range of the V-shaped wheel 25 in the circumferential direction has been expanded, thereby achieving clamping of the blocking plate 8.

[0035] When the blocking plate 8 needs to be loosened, the above-mentioned action is performed in the opposite direction, and the contraction of the spring reset device 26 and the rotation of the pawl device 23 simultaneously complete the reset of the cam device 24.

[0036] The utility model's upper baffle mechanism achieves positioning requirements between the baffle and the centrifugal mainframe tube die entirely through the positioning relationship between mechanical equipment and the accurate stroke of the oil cylinder. This positioning method is more concise and accurate, significantly reducing costs compared to previous methods. It also enables automatic installation and removal of the baffle, meeting the operating requirements of the equipment. The tensioning mechanism and swing mechanism are both driven by the oil cylinder, greatly improving the operational stability and reliability of the equipment.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An upper blocking plate mechanism for a centrifuge used for processing a central tube and a reduction tank, characterized in that: The invention comprises a base (1), a swing mechanism and a tensioning mechanism (2); the swing mechanism comprises a telescopic shaft (3), a short arm (4), a long cantilever (5), a swing oil cylinder (6) and an advance and retreat oil cylinder (7); the short arm (4) is vertically fixed to the middle of the telescopic shaft (3); the long cantilever (5) is vertically fixed to one end of the telescopic shaft (3); the telescopic shaft (3) is rotatably arranged on the base (1); the middle part of the swing oil cylinder (6) is hinged on the base (1), and the end of its cylinder rod is connected to the short arm (4) of the swing mechanism; The cylinder sleeve of the forward and backward oil cylinder (7) is fixed on the base (1) and is parallel to the telescopic shaft (3); the cylinder rod end of the forward and backward oil cylinder (7) is fixed to the end of the telescopic shaft (3) away from the long cantilever (5); One end of the long cantilever (5) away from the telescopic shaft (3) is connected to a tensioning mechanism (2) for clamping the blocking plate (8).

2. The upper blocking plate mechanism of the centrifuge for processing the central tube and reduction tank according to claim 1, characterized in that: The included angle between the short arm (4) and the long cantilever (5) is 120-160°.

3. The upper blocking plate mechanism of the centrifuge for processing the central tube and reduction tank according to claim 1, characterized in that: The tensioning mechanism (2) comprises a cam device (24) with a V-shaped wheel (25), a spring return device (26), a pawl device (23), a transmission shaft (22) and a tensioning oil cylinder (21). The two ends of the transmission shaft (22) are respectively connected to the pawl device (23) and the cylinder rod of the tensioning oil cylinder (21). The pawl device (23) cooperates with the cam device (24). The rotation of the pawl device (23) can realize the rotation of the cam device (24). One end of the spring return device (26) is fixed to the cam device (24), and the other end is fixed to the frame.

4. The upper blocking plate mechanism of the centrifuge for processing the central tube and reduction tank according to claim 1, characterized in that: At the end of the telescopic shaft (3) provided with a long cantilever (5), a shaft end auxiliary support mechanism (9) is connected via bolts.

5. The upper blocking plate mechanism of the centrifuge for processing the central tube and reduction tank according to claim 4, characterized in that: The shaft end auxiliary support mechanism (9) comprises a V-shaped wheel and a slide rail fixed on the ground, and the V-shaped wheel engages with the slide rail.

6. The upper blocking plate mechanism of the centrifuge for processing the central tube and reduction tank according to claim 1, characterized in that: Protective sleeves (10) are provided at both ends of the telescopic shaft (3).

Images