Internal grinding walking mechanism for cement lining of nodular cast iron pipe

Abstract

The utility model relates to a nodular cast iron pipe cement lining internal grinding walking mechanism which comprises a grinding assembly. The walking frame is of a rigid structure with the side face in an N shape, the two ends fixed, the lower portion provided with a gap in the travel direction of the nodular cast iron pipe cement lining internal grinding walking mechanism and the upper portion provided with a plane. The trolley assembly comprises a trolley base, a connecting arm and an adjusting arm, the trolley base, the connecting arm, the adjusting arm and a connecting shaft form a closed annular structure, and the trolley base, the connecting arm, the adjusting arm and the connecting shaft are in a wrapping posture and embraced on the walking frame; the driving device is located on the trolley base and provides power for movement of the trolley base; compared with the prior art, the trolley assembly has the advantages that the trolley base is stabilized on the walking frame in a tree-embracing mode through the connecting arm, the adjusting arm and the connecting shaft, the stability of the trolley assembly in the whole movement process is improved, the grinding quality is improved, and adverse factors such as vibration generated by grinding are avoided.

Description

Technical Field

[0001] The utility model belongs to the field of ductile iron pipe finishing processing equipment, in particular to a ductile iron pipe cement lining inner grinding walking mechanism. Background Art

[0002] According to the production and processing requirements of ductile iron pipes and industry practices, the inner wall of the cast pipe needs to be polished smooth by a grinding device during the production process of ductile iron pipes. The specific process is to use centrifugal coating or smearing to apply a certain thickness of cement mortar lining on the inner wall of the ductile iron pipe to reduce water transmission resistance and improve internal corrosion resistance.

[0003] The cut length of ductile iron pipes is usually around 6 meters, so due to the length of the pipe, the grinding head needs to extend into the pipe through the grinding rod for grinding. In addition, other auxiliary stations in the grinding area need to occupy part of the space, so the existing grinding rod length is at least four to five meters. The existing grinding machine travel mechanism drives the grinding rod to move back and forth through rails and steel wheels to help the grinding head complete the cast pipe grinding work. However, an overly long grinding rod will cause the overall center of gravity of the grinding machine to be close to the grinding head. The vibration generated by grinding can easily cause the entire grinding machine to resonate and the wheels of the travel mechanism to be suspended, which will lead to uneven grinding and uncontrollable grinding time.

[0004] Therefore, there is an urgent need for a walking mechanism that can stabilize the grinding state and improve the grinding quality and efficiency. Summary of the invention

[0005] In order to overcome the technical problems in the prior art that an overly long grinding rod will cause the overall center of gravity of the grinding machine to be close to the grinding head, and the vibration generated by grinding will easily cause the entire grinding machine to resonate and the wheels of the traveling mechanism to be suspended, the inventor used an embracing structure to lock the grinding car on the track.

[0006] The technical solution adopted by the utility model is: a ductile iron pipe cement lining inner grinding walking mechanism, comprising:

[0007] The grinding component is cantilevered at one end and has a grinding head at the end, which penetrates into the inner cavity of the ductile iron pipe to grind the components that have been coated with cement lining;

[0008] The traveling frame is N-shaped on the side, fixed at both ends, with a gap provided at the lower part along the travel direction of the ductile iron pipe cement lining inner grinding traveling mechanism, and a flat rigid structure at the upper part, and tracks are provided on the upper side and the lower side of the upper plane of the traveling frame along the travel direction of the ductile iron pipe cement lining inner grinding traveling mechanism;

[0009] A trolley assembly, wherein the grinding assembly is fixedly mounted on the upper side of the trolley assembly, and the trolley assembly travels on the traveling frame; and the trolley assembly comprises:

[0010] The trolley base is a flat surface as a whole, and a body having a number greater than a set of upper running wheels is provided on the lower side. The trolley base runs on the upper track of the running frame, and the dimension of the trolley base perpendicular to the running direction is longer than that of the running frame;

[0011] The connecting arm is more than one set and is located on both sides of the traveling direction of the trolley base, one end of which is hinged to the lower part of the trolley base, close to the side of the traveling direction of the trolley base, and the other end extends toward the gap under the traveling frame;

[0012] The adjusting arm is a rod-shaped body with adjustable and lockable length, the number of which is the same as the connecting arm, one end of which is connected to the lower part of the trolley base, and the other end of which extends toward the gap under the walking frame;

[0013] A connecting shaft passes through the gap at the lower side of the walking frame and is respectively hinged to the connecting arm and the adjusting arm, and a lower walking wheel is provided on the connecting shaft, and the lower walking wheel cooperates with a track at the lower side of the upper plane of the walking frame;

[0014] The trolley base, connecting arm, adjusting arm and connecting shaft form a closed ring structure, which is in a wrapped posture and is held on the walking frame;

[0015] The driving device is located at the trolley base and provides power for the movement of the trolley base.

[0016] Further, the driving device is a gear rack driving mode;

[0017] The traveling frame is provided with a rack arranged along the traveling direction of the trolley assembly, and the trolley assembly is provided with a gear extending toward the rack. The gear cooperates with the rack to drive the trolley assembly to move.

[0018] Furthermore, the inner sides of the upper running wheels and the lower running wheels that cooperate with the track are both provided with wheel rims.

[0019] Furthermore, the pipelines required to connect the grinding assembly and the trolley assembly pass through the lower side of the trolley base and between the upper walking wheels with the help of a drag chain.

[0020] Furthermore, the grinding components are divided into two groups, which are arranged in parallel on the upper side of the trolley component.

[0021] The beneficial effects of the utility model compared with the prior art are as follows: the trolley base is stabilized on the walking frame in the form of a "tree hugging" by utilizing the connecting arm, the adjusting arm and the connecting shaft, thereby improving the stability of the overall movement of the trolley assembly, improving the grinding quality, and avoiding adverse factors such as vibration caused by grinding; utilizing the gear rack drive mode to avoid limiting the movement performance of the trolley assembly due to insufficient locking clearance, thereby improving the controllability; and arranging two groups of grinding assemblies on the upper part of the trolley assembly, thereby ensuring sufficient layout clearance between adjacent workstations and reducing the manufacturing cost of the entire equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of a specific implementation method of the utility model;

[0023] Figure 2 It is a right view of a specific implementation method of the utility model;

[0024] Figure 3 It is a top view of a specific implementation method of the utility model;

[0025] The annotations are:

[0026] 100-grinding assembly; 200-travel frame;

[0027] 300-trolley assembly; 310-trolley base; 320-driving device; 330-connecting arm; 340-adjusting arm;

[0028] 350-connecting shaft; 360-upper running wheel; 370-lower running wheel. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model 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 a limitation to the utility model.

[0030] In order to overcome the technical problems in the prior art that the grinding rod is too long, which will cause the center of gravity of the grinding machine to be close to the grinding head, and the vibration generated by grinding will easily cause the resonance of the entire grinding machine and the wheels of the traveling mechanism to be suspended, the inventor uses an embracing structure to lock the grinding car on the track, please refer to Figures 1 to 3 The technical solution adopted by the utility model is: a ductile iron pipe cement lining inner grinding walking mechanism, comprising:

[0031] The grinding assembly 100 is cantilevered at one end and has a grinding head at the end, which penetrates into the inner cavity of the ductile iron pipe to grind the components of the cement lining that have been coated; please refer to Figure 1 and Figure 3 The grinding assembly 100 is similar to the form of a "tank and a gun barrel". One end of the "gun barrel" must go deep into the interior of the ductile iron pipe during grinding, and grinding while moving forward, which is the form of the above-mentioned process equipment, will produce an unstable situation.

[0032] The traveling frame 200 is N-shaped in side, fixed at both ends, with a gap provided at the lower part along the travel direction of the ductile iron pipe cement lining inner grinding traveling mechanism, and a flat rigid structure at the upper part. Tracks are provided on the upper and lower sides of the upper plane of the traveling frame 200 along the travel direction of the ductile iron pipe cement lining inner grinding traveling mechanism; please refer to Figure 1 The walking frame 200 is similar to the form of a "bridge". First of all, it must be satisfied that a certain amount of space is reserved at the bottom of the walking range of the mechanism so that the connecting shaft 350 can pass through the bottom and stabilize the entire mechanism in the form of an embrace.

[0033] The trolley assembly 300, the grinding assembly 100 is fixedly mounted on the upper side of the trolley assembly 300, and the trolley assembly 300 travels on the traveling frame 200; and the trolley assembly 300 includes:

[0034] The trolley base 310 is a flat surface as a whole, and has a vehicle body with a number greater than a set of upper running wheels 360 on the lower side. The trolley base 310 runs on the upper track of the running frame 200, and the dimension of the trolley base 310 perpendicular to the running direction is longer than that of the running frame 200; please refer to Figure 1 Only two sets of upper running wheels 360 are provided at the lower part of the trolley base 310 . In some other embodiments, in order to improve the stability of the vehicle body, multiple sets, such as three sets of upper running wheels 360 , may also be provided.

[0035] The connecting arms 330 are more than one set and are located on both sides of the trolley base 310 in the direction of travel. One end is hinged to the lower part of the trolley base 310, close to the side of the trolley base 310 in the direction of travel, and the other end extends toward the gap below the traveling frame 200; see Figure 1 In this embodiment, the connecting arm 330 and the adjusting arm 340 are symmetrically arranged in one group, but in other embodiments, if the vehicle body of the trolley assembly 300 is large, multiple groups can be arranged, that is, multiple groups of "two arms hugging the tree" technical solutions provide better stability. The main invention point is to use the connecting arm 330, the adjusting arm 340 and the connecting shaft 350 to "hug" the walking frame 200.

[0036] The adjustment arm 340 is a rod-shaped body with adjustable and lockable length, and has the same number as the connecting arm 330. One end of the adjustment arm 340 is connected to the lower part of the trolley base 310, and the other end extends toward the gap under the walking frame 200; please refer to Figure 1 The adjusting arm 340 and the connecting arm 330 form a triangular structure on the side of the trolley base 310. When designing this solution, the inventor took into account the two relatively contradictory technical points of adjustment and locking. In order to overcome the above technical difficulties, the connecting arm 330 and the adjusting arm 340 are used to form a triangular structure, which is hinged on the side of the trolley base 310 and two groups are symmetrically arranged to improve stability.

[0037] The connecting shaft 350 passes through the gap at the lower side of the walking frame 200 and is respectively hinged to the connecting arm 330 and the adjusting arm 340, and a lower walking wheel 370 is provided on the connecting shaft 350, and the lower walking wheel 370 cooperates with the track at the lower side of the upper plane of the walking frame 200;

[0038] The trolley base 310, the connecting arm 330, the adjusting arm 340, and the connecting shaft 350 form a closed ring structure, which is wrapped and held on the walking frame 200;

[0039] The driving device 320 is located on the trolley base 310 and provides power for the movement of the trolley base 310. In the above technical solution, the trolley assembly 300 can be provided with power by utilizing the cooperation of the wheels and the tracks.

[0040] In some other embodiments, see Figure 3 , the driving device 320 is a gear rack driving mode;

[0041] The traveling frame 200 is provided with a rack arranged along the traveling direction of the trolley assembly 300 , and the trolley assembly 300 is provided with a gear extending toward the rack. The gear cooperates with the rack to drive the trolley assembly 300 to move.

[0042] Preferably, the inner sides of the upper running wheels 360 and the lower running wheels 370 that cooperate with the track are both provided with wheel rims to improve the lateral stability of the vehicle body.

[0043] See also Figure 1 and Figure 2 The pipelines required to connect the grinding assembly 100 and the trolley assembly 300 pass through the lower side of the trolley base 310 and between the upper walking wheels 360 with the help of a drag chain.

[0044] See also Figure 3 The grinding components 100 are divided into two groups and are arranged in parallel on the upper side of the trolley component 300.

[0045] During specific implementation, the trolley base 310, the connecting arm 330, the adjusting arm 340 and the connecting shaft 350 are wrapped around the traveling frame 200, and the trolley base 310 and the connecting shaft 350 are provided with wheels that cooperate with the track. By adjusting the adjusting arm 340, the trolley base 310 can be relatively stably fixed on the traveling frame 200, and sufficient clearance is reserved for the traveling of the trolley assembly 300. Driven by the driving device 320, the trolley assembly 300 can travel relatively stably on the traveling frame 200. When the trolley assembly 300 produces large vibration or shaking due to the grinding assembly 100, the adjusting arm 340 can continue to be adjusted to achieve a relatively stable state.

[0046] The beneficial effects of the utility model compared with the prior art are as follows: the trolley base is stabilized on the walking frame in the form of a "tree hugging" by utilizing the connecting arm, the adjusting arm and the connecting shaft, thereby improving the stability of the overall movement of the trolley assembly, improving the grinding quality, and avoiding adverse factors such as vibration caused by grinding; utilizing the gear rack drive mode to avoid limiting the movement performance of the trolley assembly due to insufficient locking clearance, thereby improving the controllability; and arranging two groups of grinding assemblies on the upper part of the trolley assembly, thereby ensuring sufficient layout clearance between adjacent workstations and reducing the manufacturing cost of the entire equipment.

[0047] The above 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 substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ductile iron pipe cement lining internal grinding walking mechanism, characterized in that: include: The grinding component (100) is cantilevered at one end and provided with a grinding head at the end, which penetrates into the inner cavity of the ductile iron pipe to grind the component with the cement lining; The traveling frame (200) is N-shaped in side, fixed at both ends, with a gap provided at the lower part along the travel direction of the ductile iron pipe cement lining inner grinding traveling mechanism, and a flat rigid structure at the upper part, and tracks are provided at the upper side and the lower side of the upper plane of the traveling frame (200) along the travel direction of the ductile iron pipe cement lining inner grinding traveling mechanism; The trolley assembly (300) is fixedly mounted on the upper side of the trolley assembly (300), and the trolley assembly (300) travels on the traveling frame (200); and the trolley assembly (300) comprises: The trolley base (310) is a flat surface as a whole, and has a vehicle body with a number greater than a set of upper running wheels (360) disposed on the lower side. The trolley base (310) runs on the upper track of the running frame (200), and the dimension of the trolley base (310) perpendicular to the running direction is longer than that of the running frame (200); The connecting arms (330) are more than one set and are located on both sides of the trolley base (310) in the traveling direction, with one end hinged to the lower part of the trolley base (310) and close to one side in the traveling direction of the trolley base (310), and the other end extending toward the gap below the traveling frame (200); The adjusting arm (340) is a rod-shaped body with adjustable and lockable length, and has the same number as the connecting arm (330), one end of which is connected to the lower part of the trolley base (310) and the other end of which extends toward the gap at the lower side of the walking frame (200); A connecting shaft (350) passes through a gap at the lower side of the walking frame (200) and is respectively hinged to the connecting arm (330) and the adjusting arm (340), and a lower walking wheel (370) is provided on the connecting shaft (350), and the lower walking wheel (370) cooperates with a track at the lower side of the upper plane of the walking frame (200); The trolley base (310), the connecting arm (330), the adjusting arm (340), and the connecting shaft (350) form a closed ring structure, which is in a wrapped posture and is held on the walking frame (200); The driving device (320) is located on the trolley base (310) and provides power for the movement of the trolley base (310).

2. According to claim 1, the ductile iron pipe cement lining inner grinding walking mechanism is characterized in that: The driving device (320) is a gear rack driving mode; The traveling frame (200) is provided with a rack arranged along the traveling direction of the trolley assembly (300), and the trolley assembly (300) is provided with a gear extending toward the rack, and the gear cooperates with the rack to drive the trolley assembly (300) to move.

3. The ductile iron pipe cement lined inner grinding walking mechanism according to claim 1 is characterized in that: The inner sides of the upper running wheel (360) and the lower running wheel (370) that cooperate with the track are both provided with wheel rims.

4. The ductile iron pipe cement lined inner grinding walking mechanism according to claim 1 is characterized in that: The pipelines required to connect the grinding assembly (100) and the trolley assembly (300) pass through the lower side of the trolley base (310) and between the upper running wheels (360) by means of a drag chain.

5. The ductile iron pipe cement lined inner grinding walking mechanism according to any one of claims 1 to 4, characterized in that: The grinding components (100) are divided into two groups and are arranged in parallel on the upper side of the trolley component (300).

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