Cast pipe stepping lifting device

Abstract

The invention relates to a cast pipe stepping lifting device which comprises a fixing frame, a lifting mechanism, a lifting mechanism and a lifting mechanism. The fixing frame is a frame body with multiple sets of step-shaped structures arranged on one side; more than two groups of step-shaped structure frame bodies are arranged in the same direction as the fixed frame and are smaller than the groups of the step-shaped structures of the fixed frame; the movable frames are located in the fixed frame and do reciprocating motion relative to the fixed frame, or the movable frames are located on the two sides of the fixed frame and do reciprocating motion relative to the fixed frame. Compared with the prior art, the device has the beneficial effects that by means of reciprocating motion of the movable frame, the cast pipes climb on the fixed frame in a stepped mode, fast-paced transverse and vertical conveying of the cast pipes is achieved, and the requirement for the production rhythm of the small-caliber cast pipes is met.

Description

Technical Field

[0001] The invention belongs to the field of ductile iron pipe operation devices, and in particular relates to a cast pipe step-by-step lifting device. Background Art

[0002] The production of ductile iron pipes (hereinafter referred to as "cast pipes") is a process that requires multiple processing stations. During the operation of different stations, transfer equipment is often required. Common transfer equipment includes hoisting cranes, non-driven rails, stepping devices, etc.

[0003] The inventor found in the study of the prior art that different stations are initially designed to meet the space utilization rate, and a certain elevation is set according to the characteristics of the station, such as the centrifugal casting station is elevated, the annealing station is at a low place, and the entrance of the curing station is elevated, etc. This will cause more vertical transportation requirements for the cast pipes running in the production line. In order to meet various requirements, generally long-distance transportation will be in the form of hoisting, while short-distance vertical transportation will use elevators. However, in the small and medium-caliber (generally, the pipe diameter below DN1000 is called small and medium-caliber) production line, the production rhythm is tight and the beat interval is short. The above two transportation methods cannot adapt to the production rhythm.

[0004] Therefore, there is an urgent need for a fast, compact, and efficient lifting / lifting device. Summary of the invention

[0005] In order to overcome the shortcomings of slow lifting rhythm of hoisting and elevators in the prior art, the present invention designs a step-shaped lifting device similar to a stepping form, which lifts the workpieces in the production line according to the rhythm of the steps, so as to overcome the cumbersome installation process in hoisting and the long single stroke path in the vertical lifting mechanism, which cannot continuously transport the workpiece, and at the same time provides a device with a certain lateral displacement.

[0006] The technical solution adopted by the present invention is: a cast pipe step-by-step lifting device, comprising:

[0007] The fixed frame is a frame body with multiple groups of step-like structures on one side;

[0008] The movable frame is a stepped structure frame having two or more groups and a smaller number of stepped structures than the fixed frame in the same direction;

[0009] The movable frame is located inside the fixed frame and reciprocates relative to the fixed frame, or the movable frame is located on both sides of the fixed frame and reciprocates relative to the fixed frame;

[0010] Each set of step-shaped structures of the fixing frame comprises:

[0011] A fixed step, for supporting the cast pipe, with a surface inclined obliquely downward in the horizontal transport direction of the cast pipe;

[0012] The fixed stand is a surface inclined upwardly in the horizontal transportation direction of the cast pipe;

[0013] The fixed step platform and the fixed stand platform intersect to form an inclined V-shaped step-like structure;

[0014] Each set of step-shaped structures of the movable frame includes:

[0015] A movable step, for supporting the casting pipe, with a surface inclined obliquely downward in the horizontal transportation direction of the casting pipe;

[0016] The movable stand is a surface inclined upwardly in the horizontal transportation direction of the cast pipe;

[0017] The movable step platform and the movable stand platform intersect to form an inclined V-shaped step-like structure;

[0018] The moving direction of the movable frame is parallel to the fixed stand;

[0019] When the movable platform moves with the movable frame, at least one plane makes the center of gravity of the casting pipe fall on the movable platform;

[0020] The movable step is located at the lower side of the fixed step in an initial state;

[0021] The movable stand is located at one side of the fixed stand relative to the horizontal transport direction of the casting pipe in an initial state;

[0022] The casting pipe is translated in horizontal position and raised in vertical position by the movement of the movable frame relative to the fixed frame.

[0023] Furthermore,

[0024] A guide rail is arranged between the fixed frame and the movable frame, and the guide rail guides the movable frame to move linearly.

[0025] Furthermore,

[0026] The movable stepping platform is provided with a movable inclined table surface on one side close to the casting pipe;

[0027] The movable inclined platform surface is inclined downward at a greater angle than the movable step.

[0028] Furthermore,

[0029] The top of the fixing frame is provided with a top platform inclined surface;

[0030] The top platform slope is a surface that is inclined obliquely downward toward the horizontal transportation direction of the casting pipe.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows: utilizing the reciprocating motion of the movable frame to enable the cast pipe to climb in steps on the fixed frame, thereby realizing fast-paced horizontal and vertical transportation of the cast pipe to meet the production rhythm requirements of small-diameter cast pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a front view of a specific embodiment of the present invention;

[0033] Figure 2 It is a schematic diagram of a movable frame of a specific embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of a fixing frame according to a specific embodiment of the present invention;

[0035] Figure 4 It is a schematic diagram of the movement of the casting pipe in the process of lifting the movable frame in a specific embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the movement of the casting pipe in a specific embodiment of the present invention when the movable frame is in a falling situation;

[0037] Figure 6 This is a schematic diagram of the casting pipe falling into place when the movable frame returns to the initial state according to a specific embodiment of the present invention;

[0038] The annotations are:

[0039] 100-fixed frame; 110-fixed step platform; 120-fixed vertical platform; 130-top platform inclined surface; 200-movable frame; 210-movable step platform; 220-movable vertical platform; 211-movable inclined platform surface; 300-guide rail. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0041] In order to overcome the shortcomings of slow lifting rhythm of hoisting and elevators in the prior art, the present invention designs a step-shaped lifting device similar to a stepping form, which lifts the workpieces in the production line according to the rhythm of the steps, so as to overcome the cumbersome installation process in hoisting and the long single stroke path in the vertical lifting mechanism, which cannot continuously transport the workpiece, and at the same time provides a device with a certain lateral displacement.

[0042] See also Figures 1 to 6 The technical solution adopted in this specific implementation is: a cast pipe step-by-step lifting device, please refer to Figure 1 ,include:

[0043] The fixed frame 100 is a frame body with multiple groups of step-shaped structures arranged on one side;

[0044] The movable frame 200 is a stepped structure frame having two or more sets of stepped structures in the same direction as the fixed frame 100 and a number less than that of the fixed frame 100; generally, the number of steps of the movable frame 200 is one less than that of the fixed frame 100, so that the movement trajectory of the movable frame 200 is the shortest and the lifting efficiency is the highest.

[0045] The movable frame 200 is located inside the fixed frame 100 and reciprocates relative to the fixed frame 100, or the movable frame 200 is located on both sides of the fixed frame 100 and reciprocates relative to the fixed frame 100; in this specific embodiment, the positional relationship between the fixed frame 100 and the movable frame 200 in the side view is not given, because in the actual process, if the lifting drive is inside the fixed frame 100, the movable frame 200 will also be inside, and of course, two lifting drives can also be outside the fixed frame 100, and the movable frame 200 can complete the movement with the help of two lifting drives. The spacing between the fixed frame 100 and the movable frame 200 is to meet the support of the axial length of the cast pipe to complete the lifting action. Of course, the fixed frame 100 and the movable frame 200 can be an overall plane or two rod-shaped bodies at the contact surface with the cast pipe under the conditions.

[0046] See also Figure 3 ;

[0047] Each set of step-shaped structures of the fixing frame 100 includes:

[0048] A fixed step 110 is used to support the casting pipe and is inclined downward in the horizontal transportation direction of the casting pipe;

[0049] The fixed stand 120 is a surface inclined upwardly in the horizontal transportation direction of the cast pipe;

[0050] The fixed step platform 110 and the fixed stand platform 120 intersect to form an inclined V-shaped step-like structure;

[0051] See also Figure 2 ;

[0052] Each set of step-shaped structures of the movable frame 200 includes:

[0053] The movable platform 210 is used to support the casting pipe and is inclined downward in the horizontal transportation direction of the casting pipe;

[0054] The movable stand 220 is a surface inclined upwardly in the horizontal transportation direction of the casting pipe;

[0055] The movable step platform 210 and the movable stand platform 220 intersect to form an inclined V-shaped step-like structure;

[0056] The fixed frame 100 and the movable frame 200 may be the same or similar in step-shaped structure, or may be different. The difference may be reflected in the inclination angles of the movable step platform 210 and the movable stand 220 .

[0057] The moving direction of the movable frame 200 is parallel to the fixed stand 120;

[0058] When the movable platform 210 moves with the movable frame 200, at least one plane makes the center of gravity of the casting pipe fall on the movable platform 210; it should be noted that, please refer to Figure 4 and Figure 5 In order to lift the cast pipe, the movable step 210 must be realized. When on the next step surface, there is a section that intersects with the fixed step 110, and when on the previous step surface, it intersects with the fixed step 110 on the previous step surface. Therefore, as long as there is a plane, the center of gravity of the cast pipe can be stable.

[0059] The movable step 210 is located at the lower side of the fixed step 110 in the initial state;

[0060] The movable stand 220 is initially located on one side of the fixed stand 120 relative to the horizontal transport direction of the casting pipe;

[0061] The casting pipe is translated in horizontal position and raised in vertical position by the movement of the movable frame 200 relative to the fixed frame 100.

[0062] In some embodiments, see Figure 1 ,

[0063] A guide rail 300 is provided between the fixed frame 100 and the movable frame 200, and the guide rail 300 guides the linear motion of the movable frame 200. It should be noted that there are many ways to realize the movement of the movable frame 200, such as driving by a gear rack, realizing the limitation of the position of the guide rail, etc. In this embodiment, a form of a guide rail 300 is provided.

[0064] In some embodiments, see Figure 2 In order to speed up the placement of the cast pipe,

[0065] The movable step 210 is provided with a movable inclined platform 211 on one side close to the casting pipe;

[0066] The movable inclined platform surface 211 is inclined downward at a greater angle than the movable step 210 .

[0067] In some embodiments, see Figure 3 , in order to connect with the next workstation.

[0068] The top of the fixing frame 100 is provided with a top platform inclined surface 130;

[0069] The top platform inclined surface 130 is a surface inclined obliquely downward toward the horizontal transportation direction of the casting pipe.

[0070] In specific operation: the previous station is provided with a path similar to a guide rail or a stepper, which is connected with the step at the end of the fixed frame 100, so that the cast pipe is placed on the fixed frame 100. Under the drive, the movable frame 200 moves upward obliquely. Since the fixed stand 120 is an inclined surface, the cast pipe will move with the movable frame 200. When it moves to the upper step, the movable frame 200 falls. Since there is no support from the movable frame 200, under the action of gravity, the cast pipe falls with the inclined surface of the fixed step 110 on the fixed frame 100 to the angle between the fixed step 110 and the fixed stand 120. When the movable frame 200 moves next time, it continues to be lifted with the movable frame 200 to the upper step. This specific implementation method utilizes the reciprocating motion of the movable frame 200 to make the cast pipe climb on the fixed frame 100 in the form of an upper step.

[0071] The beneficial effect compared with the prior art is: utilizing the reciprocating motion of the movable frame to make the cast pipe climb on the fixed frame in a step-by-step manner, realizing fast-paced horizontal and vertical transportation of the cast pipe to meet the production rhythm requirements of small-diameter cast pipes.

[0072] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cast pipe stepping lifting device, characterized in that: include: The fixed frame (100) is a frame body with multiple groups of step-shaped structures arranged on one side; The movable frame (200) is a stepped structure frame body having two or more groups of stepped structures arranged in the same direction as the fixed frame (100) and the number of groups of stepped structures being less than that of the fixed frame (100); The movable frame (200) is located inside the fixed frame (100) and reciprocates relative to the fixed frame (100), or the movable frame (200) is located on both sides of the fixed frame (100) and reciprocates relative to the fixed frame (100); Each set of step-shaped structures of the fixing frame (100) comprises: A fixed step (110) is used to support the casting pipe and has a surface that is inclined downward in the horizontal transportation direction of the casting pipe; The fixed stand (120) is a surface inclined upwardly in the horizontal transportation direction of the casting pipe; The fixed step platform (110) and the fixed stand platform (120) intersect to form an inclined V-shaped step-like structure; Each set of step-shaped structures of the movable frame (200) comprises: A movable step (210) is used to support the casting pipe and has a surface that is inclined downward in the horizontal transportation direction of the casting pipe; The movable stand (220) is a surface inclined upwardly in the horizontal transportation direction of the casting pipe; The movable step platform (210) and the movable stand platform (220) intersect to form an inclined V-shaped step-like structure; The moving direction of the movable frame (200) is parallel to that of the fixed stand (120); When the movable platform (210) moves with the movable frame (200), at least one plane makes the center of gravity of the casting pipe fall on the movable platform (210); The movable step (210) is located at the lower side of the fixed step (110) in an initial state; The movable stand (220) is located at one side of the fixed stand (120) relative to the horizontal transportation direction of the casting pipe in an initial state; The casting pipe is translated in horizontal position and raised in vertical position by the movement of the movable frame (200) relative to the fixed frame (100).

2. The cast pipe step-by-step lifting device according to claim 1, characterized in that: A guide rail (300) is provided between the fixed frame (100) and the movable frame (200), and the guide rail (300) guides the movable frame (200) to move linearly.

3. The cast pipe step-by-step lifting device according to claim 1, characterized in that: The movable step (210) is provided with a movable inclined platform (211) on one side close to the casting pipe; The movable inclined platform surface (211) is inclined downward at a greater angle than the movable step platform (210).

4. The cast pipe step-by-step lifting device according to claim 1, characterized in that: The top of the fixing frame (100) is provided with a top platform inclined surface (130); The top platform inclined surface (130) is a surface inclined obliquely downward in the horizontal transportation direction of the casting pipe.

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