Water milling device for lining of nodular cast iron pipe

Abstract

The utility model relates to a water milling device for a nodular cast iron pipe liner and belongs to the technical field of water milling devices. The nodular cast iron pipe grinding device comprises a travelling crane, a supporting rod, a mounting plate, a speed reducer and a grinding head, the travelling crane can walk from back to front to get close to a nodular cast iron pipe, the supporting rod extends in the front-back direction and is connected to the front end of the travelling crane, the mounting plate is horizontally arranged and connected to the front end of the supporting rod, and the speed reducer is connected to the mounting plate and located above the mounting plate. The grinding head is rotationally assembled on the mounting plate and located below the mounting plate, the output end of the speed reducer is in transmission connection with the grinding head through a belt, two sets of supporting pieces which are arranged in a bilateral symmetry mode are arranged above the mounting plate and located on the left side and the right side of the speed reducer respectively, and an arc-shaped mud blocking piece is connected between the two sets of supporting pieces through connecting bolts. The arc-shaped mud blocking piece is located above the speed reducer, the axis of the arc-shaped mud blocking piece extends in the front-back direction, and an arc-shaped opening of the arc-shaped mud blocking piece is arranged downwards.

Description

Technical Field

[0001] The utility model relates to the technical field of water grinding devices, in particular to a water grinding device for the inner lining of ductile iron pipes. Background Art

[0002] The inner lining materials of ductile iron pipes usually include cement mortar, epoxy resin, polyurethane, etc. Among them, cement mortar is one of the most common inner lining materials. The cement mortar lining can improve the anti-corrosion performance and service life of the pipe. Usually, a water mill is required to grind and polish the inner wall of the ductile iron pipe coated with cement mortar to achieve higher surface flatness and smoothness.

[0003] In the prior art, the water grinding device generally includes a traveling crane. A horizontal support rod is connected to the traveling crane, and a speed reducer and a grinding head are connected to the end of the support rod. The speed reducer and the grinding head are connected by belt drive. During use, the speed reducer, the grinding head, and the belt at the end of the support rod all extend into the ductile iron pipe, and the grinding head fits against the inner wall of the ductile iron pipe to polish the inner wall.

[0004] During the grinding process, the ductile iron pipe is in a rotating state. The water and the cement mixture used for water grinding will be carried to the upper part of the inner wall of the ductile iron pipe, and then fall on the speed reducer due to gravity. The motor in the speed reducer cannot dissipate heat in time, resulting in the burnout of the motor and the need for frequent replacement of the motor. If the cement falls on the bolts for fixing the motor and solidifies, it will also make the bolts difficult to remove, increasing the time consumed for replacing the motor. When the cement falls on the belt and the pulley, it will also cause wear of the belt and the pulley, requiring frequent replacement. This not only affects the production rhythm but also increases the production cost. Summary of the Utility Model

[0005] The utility model provides a water grinding device for the inner lining of ductile iron pipes to solve the technical problem that in the prior art, cement and water will fall on the speed reducer and the belt during use, causing damage to them, resulting in an increase in production cost and a slowdown in the production progress.

[0006] To solve the above problems, the water grinding device for the inner lining of ductile iron pipes provided by the utility model adopts the following technical solutions:

[0007] A water grinding device for the inner lining of ductile iron pipes, comprising a traveling crane, a support rod, a mounting plate, a speed reducer and a grinding head. The traveling crane can move forward from the rear to approach the ductile iron pipe. The support rod extends in the front-rear direction and is connected to the front end of the traveling crane. The mounting plate is horizontally arranged and connected to the front end of the support rod. The speed reducer is connected to the mounting plate and located above the mounting plate. The grinding head is rotatably assembled on the mounting plate and located below the mounting plate. The output end of the speed reducer is connected to the grinding head through belt drive. There are two groups of symmetrically arranged support members above the mounting plate, and the two groups of support members are respectively located on the left and right sides of the speed reducer. An arc-shaped mud guard is connected between the two groups of support members through connecting bolts. The arc-shaped mud guard is located above the speed reducer. The axis of the arc-shaped mud guard extends in the front-rear direction. The arc-shaped opening of the arc-shaped mud guard is arranged downward. The arc-shaped mud guard can block the speed reducer and the belt in the up-down direction.

[0008] Further, the support member includes a vertical support plate and a horizontal support plate. The vertical support plate is perpendicularly connected to the mounting plate. The horizontal support plate extends in the front-rear direction and is connected to the top end of the vertical support plate. An acute angle with the opening downward is formed between the horizontal support plate and the vertical support plate. The left and right sides of the arc-shaped mud guard are connected to the horizontal support plate through connecting bolts.

[0009] Further, the vertical support plate includes a vertical plate section and an inclined plate end integrally formed at the top end of the vertical plate section. An acute angle with the opening downward is formed between the inclined plate section and the vertical plate section. The inclined plate section is located on the side of the vertical plate section facing away from the speed reducer. The horizontal support plate is connected to the inclined plate section in a fitting manner.

[0010] Further, a plurality of the vertical support plates are arranged at intervals in the front-rear direction. The support member further includes a reinforcing plate extending in the front-rear direction. The reinforcing plate is connected to a plurality of vertical plate sections among the plurality of vertical support plates.

[0011] Further, the arc-shaped mud guard includes a plurality of waste belts arranged in sequence from front to back. Any two adjacent waste belts are in contact with each other. The left and right sides of each waste belt are respectively connected to two support members through connecting bolts.

[0012] Adopting the above technical solution, the scrapped belts can be reused, saving resources and reducing costs.

[0013] Further, a support plate is perpendicularly connected to the bottom surface of the mounting plate. The rear end of the grinding head is connected to a rotating shaft extending in the front-rear direction. The rotating shaft rotatably passes through the support plate. The rear end of the rotating shaft is connected to the output end of the speed reducer through belt drive.

[0014] Further, a counterweight is connected to the rear side of the traveling crane.

[0015] The beneficial effects of a kind of internal lining water grinding device for ductile iron pipes provided by the utility model are as follows: Support members are arranged on the left and right sides of the speed reducer, and arc-shaped mud guards that are located above the speed reducer and open downward are installed on the two support members. The arc-shaped mud guards can block water and cement from falling on the speed reducer and the belt, preventing the cement and water from damaging the belt and the motor in the speed reducer, effectively prolonging the service life of the speed reducer and the belt, saving production costs, and not having to frequently replace the motor and the belt during the water grinding process, effectively improving the production efficiency. Since the arc-shaped mud guards are arc-shaped, the water and cement that fall on the arc-shaped mud guards will fall along the arc-shaped top surface of the arc-shaped mud guards, preventing the cement and water from accumulating on the top of the arc-shaped mud guards for a long time and causing deformation of the arc-shaped mud guards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By referring to the drawings and reading the following detailed description, the above and other objects, features, and advantages of the exemplary embodiments of the present utility model will become easy to understand. In the drawings, several embodiments of the present utility model are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0017] Figure 1 is the front view of a kind of internal lining water grinding device for ductile iron pipes provided by the present utility model;

[0018] Figure 2 is the side view of a kind of internal lining water grinding device for ductile iron pipes provided by the present utility model;

[0019] Figure 3 is the front view of a kind of internal lining water grinding device for ductile iron pipes provided by the present utility model when the support members and the arc-shaped mud guards are not installed;

[0020] Figure 4 is the top view of a kind of internal lining water grinding device for ductile iron pipes provided by the present utility model when the support members and the arc-shaped mud guards are not installed.

[0021] Description of the reference numerals:

[0022] 1, traveling crane; 2, counterweight; 3, support rod; 4, grinding head; 5, rotating shaft; 6, mounting plate; 7, support plate; 8, belt; 9, driven pulley; 10, waste belt; 11, vertical support plate; 12, reinforcing plate; 13, connecting bolt; 14, speed reducer; 15, driving pulley; 16, U-shaped connecting piece; 17, horizontal support plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 - 4 As shown, a ductile iron pipe lining water grinding device includes a crane 1, a support rod 3, a mounting plate 6, a reducer 14, a grinding head 4, a support member and an arc-shaped mud guard.

[0025] like Figure 1 As shown, the trolley 1 can move from rear to front to approach the ductile iron pipe, and a counterweight 2 is connected to the rear side of the trolley 1.

[0026] like Figure 1 As shown, the support rod 3 extends in the front-to-back direction, the support rod 3 is connected to the front end of the vehicle 1, and the front end of the support rod 3 is connected to a U-shaped connecting piece 16 with an opening facing forward.

[0027] like Figure 4 As shown, the rear end of the mounting plate 6 is provided with a U-shaped notch with an opening facing backwards, and the U-shaped connector 16 is connected to the rear side wall of the mounting plate 6, and the U-shaped notch is directly opposite to the U-shaped connector 16. A support plate 7 is vertically connected to the bottom surface of the mounting plate 6.

[0028] like Figure 3 As shown, the reducer 14 includes a motor and a reducer drivingly connected to the output shaft end of the motor, and the output end of the reducer is connected to a driving pulley 15.

[0029] The grinding head 4 is cylindrical, and the axis of the grinding head 4 extends in the front-to-back direction. The rear end of the grinding head 4 is coaxially connected with a rotating shaft 5 extending in the front-to-back direction. The rotating shaft 5 is rotatably mounted on the support plate 7. The rear end of the rotating shaft 5 is connected with a driven pulley 9. A belt 8 is provided on the outside of the driven pulley 9 and the driving pulley 15.

[0030] like Figure 1 , Figure 2 As shown, there are two support members, both of which are connected to the top surface of the mounting plate 6 and are symmetrically arranged in the left-right direction, and the above-mentioned reducer 14 is located between the two support members.

[0031] like Figure 2As shown in the figure, the support member includes a vertical support plate 11, a horizontal support plate 17, and a reinforcing plate 12. There are two vertical support plates 11, and the two vertical support plates 11 are respectively connected to the front and rear ends of the mounting plate 6. The vertical support plate 11 includes a vertical plate section and an inclined plate end integrally formed at the top of the vertical plate section. An acute angle with the opening facing downwards is formed between the inclined plate section and the vertical plate section, and the inclined plate section is located on the side of the vertical plate section facing away from the speed reducer 14.

[0032] The horizontal support plate 17 extends in the front-rear direction, and the horizontal support plate 17 is in contact with the top surface of the inclined plate section and is welded to the inclined plate section.

[0033] The reinforcing plate 12 extends in the front-rear direction, and the reinforcing plate 12 is connected between the middle sections of the two vertical plate sections.

[0034] As Figure 1 shown, the arc-shaped mudguard includes a plurality of waste belts 10 arranged in sequence from front to back. Any two adjacent waste belts 10 are in contact with each other, and the left and right sides of each waste belt 10 are respectively connected to the horizontal support plates 17 on two support members through connecting bolts 13.

[0035] When the present utility model is in use, the traveling crane 1 moves forward, so that the front end of the support rod 3 extends into the ductile iron pipe. The grinding head 4 is in contact with the inner wall of the ductile iron pipe. The speed reducer 14 drives the grinding head 4 to rotate to grind the inner lining of the ductile iron pipe. During the grinding process, the ductile iron pipe rotates under the drive of the external structure. The water and cement brought to the upper part by the rotation of the ductile iron pipe will fall on the top surface of the arc-shaped mudguard and slide down along the arc-shaped top surface of the arc-shaped mudguard, effectively preventing the cement and water from falling on the belt 8 and the motor in the speed reducer 14 and causing damage to the two, effectively prolonging the service life of the motor and the belt 8, and reducing the production cost.

[0036] In this embodiment, the support member includes two vertical support members and a horizontal support plate 17. A reinforcing plate 12 is connected between the two vertical support members. In other embodiments, the support member may only include one vertical support member, and the width dimension of the vertical support member in the front-rear direction is relatively large. At this time, there is no need to provide a reinforcing plate 12.

[0037] In this embodiment, the arc-shaped mudguard is formed by splicing a plurality of waste belts 10. In other embodiments, the arc-shaped mudguard is a whole arc-shaped metal plate.

[0038] Based on the above description of this specification, those skilled in the art can also understand the following terms used, such as "upper", "lower", "front", "rear", "left", "right", "width", "horizontal", "top", "bottom", "inner", "outer", etc. Terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings of this specification. It is only for the purpose of facilitating the description of the solution of the present utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operated in the specific orientation. Therefore, the above terms of orientation or positional relationship cannot be understood or interpreted as a limitation to the solution of the present utility model.

[0039] In addition, in the description of this specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise specifically defined.

Claims

1. A ductile iron pipe lining water mill device, characterized in that: The utility model comprises a crane, a support rod, a mounting plate, a reducer and a grinding head. The crane can move from rear to front to approach the ductile iron pipe. The support rod extends in the front-rear direction and is connected to the front end of the crane. The mounting plate is horizontally arranged and connected to the front end of the support rod. The reducer is connected to the mounting plate and is located above the mounting plate. The grinding head is rotatably assembled on the mounting plate and is located below the mounting plate. The output end of the reducer is connected to the grinding head through a belt drive. Two groups of support members symmetrically arranged on the left and right are provided above the mounting plate. The two groups of support members are respectively located on the left and right sides of the reducer. An arc-shaped mud guard is connected between the two groups of support members through connecting bolts. The arc-shaped mud guard is located above the reducer. The axis of the arc-shaped mud guard extends in the front-rear direction. The arc-shaped opening of the arc-shaped mud guard is arranged downward. The arc-shaped mud guard can shield the reducer and the belt in the up and down directions.

2. A ductile iron pipe lining water mill device according to claim 1, characterized in that: The support member includes a vertical support plate and a horizontal support plate. The vertical support plate is vertically connected to the mounting plate. The horizontal support plate extends in the front-rear direction. The horizontal support plate is connected to the top of the vertical support plate. An acute angle with an opening facing downward is formed between the horizontal support plate and the vertical support plate. The left and right sides of the arc-shaped mudguard are connected to the horizontal support plate by connecting bolts.

3. A ductile iron pipe lining water mill device according to claim 2, characterized in that: The vertical support plate includes a vertical plate section and an inclined plate end integrally formed at the top of the vertical plate section, an acute angle with an opening facing downward is formed between the inclined plate section and the vertical plate section, the inclined plate section is located on the side of the vertical plate section facing away from the reducer, and the horizontal support plate is connected to the inclined plate section in a fit with the inclined plate section.

4. A ductile iron pipe lining water mill device according to claim 3, characterized in that: The vertical support plates are provided with a plurality of pieces at intervals along the front-to-back direction. The support members also include reinforcing plates extending along the front-to-back direction. The reinforcing plates are connected to a plurality of vertical plate sections in the plurality of vertical support plates.

5. A ductile iron pipe lining water mill device according to any one of claims 1 to 4, characterized in that: The arc-shaped mudguard comprises a plurality of waste belts arranged in sequence from front to back, any two adjacent waste belts are fitted to each other, and the left and right sides of each waste belt are respectively connected to two supporting members by connecting bolts.

6. A ductile iron pipe lining water mill device according to any one of claims 1 to 4, characterized in that: A support plate is vertically connected to the bottom surface of the mounting plate, and a rotating shaft extending in the front-rear direction is connected to the rear end of the grinding head. The rotating shaft is rotatably arranged on the support plate, and the rear end of the rotating shaft is connected to the output end of the reducer through a belt drive.

7. A ductile iron pipe lining water mill device according to any one of claims 1 to 4, characterized in that: A counterweight is connected to the rear side of the crane.

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