Automatic roller carrier for PCCP (prestressed concrete cylinder pipe) repair welding

Abstract

An automatic roller carrier for PCCP (prestressed concrete cylinder pipe) repair welding belongs to the technical field of building construction and comprises a steel frame body, two groups of movable rotation driving components are symmetrically arranged at two ends of the steel frame body, each rotation driving component comprises a pulley, the pulleys are positioned above the end of the steel frame body and connected with a motor through a connecting bearing, and the motor is connected with the steel frame body. The two ends of the steel frame body are further provided with two sets of infrared induction devices. The device is simple in structure, ingenious in conception, convenient to install and maintain in the later period, low in production and use cost and capable of effectively reducing labor intensity, reducing the probability of safety accidents and improving production efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and relates to a roller frame for steel tube repair welding, in particular to an automatic roller frame for PCCP steel pipe repair welding. Background Art

[0002] PCCP pipe (prestressed concrete cylinder pipe) is a high-quality pipe with good quality and low price. It is composed of an inner layer of concrete, an integral steel cylinder, an outer layer of concrete, prestressed steel wire and an outer mortar protective layer. It can be used for long-distance water diversion projects, urban water supply projects, and water pipeline construction in sewage treatment plants. It is also suitable for use as a casing for underground power high-voltage corridors. With the rapid development of urban water supply demand, PCCP pipelines are more and more widely used. The steel cylinder layer of the PCCP steel pipe is welded by multiple steel cylinders connected end to end. The two adjacent steel cylinders are fixed by welding with sockets, spigots and transition rings. After welding, the welds of the steel cylinders need to be tested for impermeability. For steel cylinders with leaking welds, the welds at the leaking parts need to be repaired until they are qualified.

[0003] At present, the domestic PCCP industry has complicated operations and great safety hazards in the process of steel cylinder repair welding, which has a great impact on production efficiency and personal safety. Under this circumstance, it is urgently necessary to design and research a set of automatic roller frames for PCCP steel cylinder repair welding. Summary of the invention

[0004] In view of the shortcomings of the prior art described above, the purpose of the utility model is to provide an automatic roller frame for PCCP steel pipe repair welding, which is used to solve the technical problems in the prior art that the operation of PCCP steel pipe during steel cylinder repair welding is cumbersome, time-consuming and has great safety hazards.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides an automatic roller frame for PCCP steel pipe repair welding, including a steel frame body, two groups of movable rotation drive components are symmetrically provided at both ends of the steel frame body, each group of the rotation drive components includes a pulley, the pulley is located above the end of the steel frame body, the pulley is connected to the motor through a connecting bearing, and two groups of infrared sensing devices are also provided at both ends of the steel frame body.

[0006] Preferably, in any of the above schemes, the steel frame includes two symmetrically arranged longitudinal bars, and the two longitudinal bars are connected by two cross bars to form a rectangular structure.

[0007] Preferably, in any of the above schemes, the two groups of infrared sensing devices are symmetrically arranged on opposite sides of the two horizontal rods, and the two groups of infrared sensing devices are arranged on the outsides of the two vertical rods.

[0008] Preferably, in any of the above solutions, the upper surfaces of the two cross bars are both recessed downward along their length direction to form a track, and the pulley is located in the track.

[0009] Preferably in any of the above solutions, the connecting bearing is a bearing with a variable inner ring diameter.

[0010] Preferably in any of the above solutions, the motor is a remote control and infrared induction dual-controlled motor.

[0011] As described above, the automatic roller stand for PCCP steel pipe repair welding of the utility model has the following beneficial effects:

[0012] 1. The utility model reduces labor intensity, reduces the probability of safety accidents, and improves production efficiency. The adoption of the utility model lays a solid foundation for the subsequent PCCP pipe production.

[0013] 2. The utility model has a simple structure, ingenious design, easy installation, convenient later maintenance, and low production and use costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Shown is a schematic diagram of the structure of the utility model.

[0015] Figure 2 Shown is an enlarged end view of an automatic roller stand.

[0016] Figure 3 Shown is a schematic diagram of the structure of the rotation drive assembly.

[0017] Component number description

[0018] 1- steel frame; 11- longitudinal bar; 12- cross bar; 2- infrared sensing device; 3- track; 4- motor; 5- pulley; 6- connecting bearing. DETAILED DESCRIPTION

[0019] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0020] See also Figures 1 to 3It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0021] See also Figure 1-3 The utility model provides an automatic roller frame for PCCP steel pipe repair welding, including a steel frame 1, two groups of movable rotation drive components are symmetrically provided at both ends of the steel frame 1, each group of the rotation drive components includes a pulley 5, the pulley 5 is located above the end of the steel frame 1, and the pulley 5 is connected to the motor 4 through a connecting bearing 6. Two groups of infrared sensing devices 2 are also provided at both ends of the steel frame 1.

[0022] When this embodiment is used, when it is necessary to repair weld the PCCP steel pipe, the PCCP steel pipe is placed on the four pulleys 5 on the roller frame, the motor 4 rotates to drive the connecting bearing 6 to rotate, the connecting bearing 6 rotates to drive the pulley 5 to roll, the pulley 5 rolls and drives the steel pipe on the pulley 5 to rotate. During the rotation of the steel pipe, when the staff finds that there is a repair welding point on the steel pipe, the obstacle is extended into the sensing area of ​​the infrared sensing device 2. When the infrared sensing device 2 senses an object, the signal is transmitted to the motor 4, the motor 4 stops rotating, and the staff performs repair welding. When the repair welding is completed, the obstacle moves out of the sensing area for 5s, and the motor 4 continues to rotate, thereby driving the steel pipe to rotate, which is convenient for the repair welding operation of the next repair welding point.

[0023] In this embodiment, before repair welding of steel pipes of different diameters, the distance between the two pulleys 5 of the same group needs to be adjusted so that the pulleys 5 can drive the steel pipes of different diameters to rotate. Specifically, the connecting bearing 6 is a bearing with a variable inner ring diameter. That is, when it is necessary to adjust the distance between the two pulleys 5 of the same group, the inner ring diameter of the connecting bearing 6 is adjusted to be smaller, and the motor 4 drives the pulley 5 to move. When the pulley 5 moves to the required position, the motor 4 is stopped; then the diameter of the connecting bearing 6 is adjusted to be larger, and the motor 4 drives the pulley 5 to idle. During the idle rotation of the pulley 5, the steel pipe on the pulley 5 is driven to rotate, so as to facilitate the observation of the repair welding point.

[0024] In this embodiment, the motor 4 is a remote control and infrared sensing dual-control motor 4, so that when there are people in the infrared sensing area, the steel pipe will not rotate, thereby preventing safety accidents and improving safety.

[0025] In this embodiment, another group of movable infrared sensing devices 2 (not shown in the figure) can be symmetrically arranged on the outside of the two cross bars 12. When the infrared sensing devices 2 sense that there are people inside the steel pipe, they stop rotating, thereby further improving safety.

[0026] As a further description of the above embodiment, the steel frame 1 includes two symmetrically arranged longitudinal rods 11 , and the two longitudinal rods 11 are connected by two cross rods 12 to form a rectangular structure.

[0027] When this embodiment is used, the length of the longitudinal rod 11 is set according to the length of the PCCP steel pipe. The longitudinal rod 11 and the cross bar 12 are detachably connected by connecting bolts, which facilitates the disassembly and connection between the longitudinal rod 11 and the cross bar 12, so that the length of the longitudinal rod 11 is determined according to the length of the steel pipe to meet different usage requirements.

[0028] In this embodiment, the longitudinal rods 11 and the cross rods 12 are both made of rectangular steel pipes, thereby ensuring the stability of the steel frame 1 when placed on the ground.

[0029] As a further description of the above embodiment, each group of the infrared sensing devices 2 is disposed on opposite sides of two horizontal bars 12 , and two groups of the infrared sensing devices 2 are disposed on the outsides of two vertical bars 11 .

[0030] When the present embodiment is used, two groups of infrared sensing devices 2 are arranged outside the two longitudinal rods 11, so that the staff can place obstacles within the infrared sensing area when repair welding is required, thereby improving safety.

[0031] As a further description of the above embodiment, the upper surfaces of the two cross bars 12 are both recessed downward along the length direction thereof to form a track 3 , and the pulley 5 is located inside the track 3 .

[0032] When this embodiment is used, the arrangement of the track 3 on the crossbar 12 facilitates the movement of the pulley 5 in the track 3 . At the same time, the track 3 can also limit the pulley 5 , ensuring that the pulley 5 moves in the straight direction of the track 3 .

[0033] In this embodiment, when the motor 4 drives the pulley 5 to move along the track 3 , the motor 4 moves along with the movement of the pulley 5 .

[0034] In summary, the working process of the automatic roller stand used for PCCP steel pipe repair welding is as follows:

[0035] 1. The staff starts the motor 4 through the remote control to drive the two pulleys 5 of the same group to move toward or away from each other, so that the distance between the two pulleys 5 of the same group is adapted to the diameter of the PCCP steel pipe to be repaired and welded. After the adjustment is completed, the motor 4 is turned off;

[0036] 2. The bridge crane hoists the PCCP steel cylinder to the roller frame. After the steel cylinder is hoisted, the welding personnel are in place and ready to carry out the steel cylinder welding work;

[0037] 3. After the preparation work is completed, the repair welder starts the roller frame through the remote control, so that the motor 4 drives the pulley 5 to rotate in the original position. When the infrared sensing device 2 confirms that there is no object outside the steel cylinder, the steel cylinder rotates. When the repair welder finds the repair welding point, he extends the obstacle into the sensing area of ​​the infrared sensing device 2. When the infrared sensing device 2 senses that there is an object, it transmits a signal to the motor 4, and the motor 4 stops rotating. After stopping rotating, the repair welder repairs the repair welding point;

[0038] 4. After the repair welding is completed, the obstacle is extended out of the sensing area. After 5 seconds, the motor 4 will continue to rotate, and the repair welding personnel will continue to search for the repair welding points until all the repair welding points of the steel cylinder are completed.

[0039] In summary, the utility model has a simple structure, ingenious design, convenient installation, convenient later maintenance, low production and use costs, and can effectively reduce labor intensity, reduce the probability of safety accidents, and improve production efficiency. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0040] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An automatic roller frame for PCCP steel pipe repair welding, comprising a steel frame (1), characterized in that: Two groups of movable rotation drive components are symmetrically arranged at both ends of the steel frame (1), and each group of the rotation drive components includes a pulley (5). The pulley (5) is located above the end of the steel frame (1), and the pulley (5) is connected to the motor (4) through a connecting bearing (6). Two groups of infrared sensing devices (2) are also arranged at both ends of the steel frame (1).

2. The automatic roller stand for PCCP steel pipe repair welding according to claim 1 is characterized in that: The steel frame (1) comprises two symmetrically arranged longitudinal bars (11), and the two longitudinal bars (11) are connected via two transverse bars (12) to form a rectangular structure.

3. The automatic roller stand for PCCP steel pipe repair welding according to claim 2 is characterized in that: Each group of the infrared sensing devices (2) is arranged on opposite sides of the two horizontal bars (12), and two groups of the infrared sensing devices (2) are arranged on the outsides of the two vertical bars (11).

4. The automatic roller stand for PCCP steel pipe repair welding according to claim 2 is characterized in that: The upper surfaces of the two cross bars (12) are both recessed downwards along their length direction to form a track (3), and the pulley (5) is located inside the track (3).

5. The automatic roller stand for PCCP steel pipe repair welding according to claim 1 is characterized in that: The connecting bearing (6) is a bearing with a variable inner ring diameter.

6. The automatic roller stand for PCCP steel pipe repair welding according to claim 1 is characterized in that: The motor (4) is a remote control and infrared induction dual control motor (4).

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