CN221603702U - A pressure steel pipe assembly circular adjustment seat - Google Patents

Abstract

The utility model provides a pressure steel pipe group circle adjustment seat, including a base seat, a screw transmission mechanism, a positioning seat and an adjusting oil cylinder; the base seat is a fixed seat, the screw transmission mechanism is installed on the base seat, the movement direction of the screw transmission mechanism is consistent with the length direction of the base seat, and the upper end surface of the base seat is a support limit surface that slides with the positioning seat; the positioning seat is installed at the action end of the screw transmission mechanism, the bottom end of the positioning seat slides with the upper end surface of the base seat, so that the positioning seat can perform linear reciprocating motion along the upper end surface of the base seat, and the rear end surface of the positioning seat is an arc surface; the adjusting oil cylinder is installed on the base seat and is located behind the positioning seat, and a steel pipe clamping groove is formed between the piston end of the adjusting oil cylinder and the positioning seat. The pressure steel pipe group circle adjustment seat has the advantages of adjustable diameter and convenient and flexible adjustment of single-petal steel pipes.

Description

A pressure steel pipe assembly circular adjustment seat

Technical Field

The utility model relates to penstock rounding equipment, in particular to a penstock rounding adjusting seat.

Background Art

The water diversion systems of diversion hydropower stations and pumped-storage power stations are equipped with a large number of pressure steel pipes. Due to their large size, pressure steel pipes are usually designed as two-petal or multi-petal structures and are installed after being assembled and welded into a circle at the construction site.

The existing vertical assembly circle method is to first draw the inner and outer arc lines, cross center line, tile seam line, etc. of the pressure steel pipe on the assembly platform, and then combine appropriate positioning components to assemble the circle.

During the process, the auxiliary tools used mainly include lifting devices, jacks, wedge plates, guide chains and other auxiliary tools. They mainly rely on drawing alignment lines on the platform, positioning plates to limit alignment, and adjusting roundness and gaps with wedge plates, jacks and guide chains. It is basically a manual operation. The tools used are very scattered and traditional. When there is a single penstock rounding, this solution can simply complete the rounding work. However, when there are batches of penstocks that need to be rounded and installed, this traditional manual solution is too inefficient, the standard is not easy to achieve, and the consistency between them is easily not up to standard. Moreover, the same workstation can only be used for the assembly of steel pipes with the same diameter, and there is no variable diameter adjustment function. It is difficult to meet the manufacturing process of large-scale, variable diameter, multi-wall thickness, and high-strength steel penstocks for pumped storage power stations.

Utility Model Content

The utility model aims to solve the deficiencies of the prior art and thus provide a pressure steel pipe group circle adjusting seat which has an adjustable diameter and is convenient for flexible adjustment of a single-flap steel pipe.

In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a pressure steel pipe group circle adjustment seat, including a base seat, a screw transmission mechanism, a positioning seat and an adjustment cylinder;

The base seat is a fixed seat, the screw transmission mechanism is installed on the base seat, the movement direction of the screw transmission mechanism is consistent with the length direction of the base seat, and the upper end surface of the base seat is a supporting limit surface that slides with the positioning seat;

The positioning seat is installed at the action end of the screw transmission mechanism, and the bottom end of the positioning seat is slidably matched with the upper end surface of the base seat, so that the positioning seat can perform linear reciprocating motion along the upper end surface of the base seat, and the rear end surface of the positioning seat is an arc surface;

The regulating oil cylinder is installed on the base seat and is located behind the positioning seat. A steel pipe clamping groove is formed between the piston end of the regulating oil cylinder and the positioning seat.

Preferably, the base comprises two main beams and two end plates, the upper main beam comprises two channel steels back to back and maintaining a certain distance and an upper plate for connecting the channel steels, the lower main beam comprises two channel steels back to back and maintaining a certain distance and a plurality of lower plates for connecting the channel steels, and the two end plates are respectively installed at the front end and the rear end;

A long slot is provided at the center of the upper plate along the length direction, and the action end of the screw transmission mechanism passes through the long slot and slides in the long slot;

The end plate is provided with a mounting hole for mounting a screw transmission mechanism.

Preferably, the screw transmission mechanism comprises a screw, a screw nut, a locking nut and a pair of thrust bearings, the screw is a hexagonal prism, a circular step, a trapezoidal thread segment and a triangular thread segment from the large end to the small end, the two ends of the screw pass through the two end plates and are respectively installed with the thrust bearings, the small end is installed on the front end plate through the locking nut and the positioning pin, and the large end is located on the rear end plate as an adjustment end;

The screw nut is threadably matched with the trapezoidal thread segment. The screw nut, as the action end of the screw transmission mechanism, passes through a long slot and is provided with a plurality of bolt holes. The positioning seat is fixed to the top end of the screw nut by a gland and screws.

Preferably, the front end of the positioning seat is provided with a right-angled trapezoidal reinforcement rib, and the bottom end of the positioning seat is provided with a positioning hole and a mounting hole corresponding to the screw nut. The positioning hole is used to adapt and position with the top structure of the screw nut, and the mounting hole is used to cooperate with the pressure cover and the screw to lock the screw nut.

Preferably, a scale is provided on the upper end surface of the base seat, and a scale groove is correspondingly provided on the positioning seat.

Preferably, the adjusting cylinder is installed on a base seat based on a cylinder seat, and the horizontal installation position of the adjusting cylinder in the cylinder seat is adjustable so as to adapt to different stroke requirements.

Preferably, the regulating cylinder is a double-acting cylinder.

Preferably, a plurality of bolt connection holes are provided at the bottom end of the base seat for locking and installing the base seat.

The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model has the following advantages:

1. The pressure steel pipe rounding adjustment seat is used to clamp a piece of steel pipe. The rounding radius of the steel pipe is adjusted by a screw transmission mechanism. The clamping degree of the steel pipe is adjusted by adjusting the adjusting cylinder. The steel pipe can be rounded by the matching relationship of several pressure steel pipe rounding adjustment seats in different positions.

2. Since the pressure steel pipe rounding adjustment seat can not only bear the weight of the steel pipe, but also easily adjust the rounding linear movement of the steel pipe, and can also fix the steel pipe by clamping action, it can complete most of the adjustment actions in the steel pipe rounding process, freeing up most of the manual work content of the staff, improving the rounding efficiency and reducing labor intensity.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of a circular adjustment seat for a medium pressure steel pipe assembly according to the present invention.

FIG. 2 is a cross-sectional view of the circular adjustment seat of the medium pressure steel pipe assembly of the present invention.

FIG3 is a top view of the circular adjustment seat of the pressure steel pipe assembly in the utility model.

FIG. 4 is a schematic diagram of the installation of the circular adjustment seat of the medium pressure steel pipe assembly of the utility model.

In the figure: 1. Base seat; 2. Screw drive mechanism; 3. Positioning seat; 4. Adjusting cylinder; 5. Steel pipe clamping groove; 6. Pipe flap;

11. Upper main beam; 12. End plate; 13. Lower main beam; 14. Bolt connection hole; 15. Long slot;

21. Screw; 22. Screw nut; 23. Lock nut; 24. Thrust bearing; 25. Positioning pin; 26. Adjustment end;

31. Adjusting cover; 32. Screws; 33. Arc surface; 34. Right-angle trapezoidal reinforcement ribs.

DETAILED DESCRIPTION

The technical solution of the utility model is further described in detail below through specific implementation methods.

As shown in FIGS. 1 to 4 , a penstock circular adjustment seat comprises a base seat 1 , a screw transmission mechanism 2 , a positioning seat 3 and an adjusting cylinder 4 .

The base seat 1 is a fixed seat, the screw transmission mechanism 2 is installed on the base seat 1, the movement direction of the screw transmission mechanism 2 is consistent with the length direction of the base seat 1, and the upper end surface of the base seat 1 is a supporting limit surface that slides with the positioning seat 3.

Specifically, the base 1 includes two main beams and two end plates 12. The main beam 11 located at the top includes two channel steels back to back and maintaining a certain distance and an upper plate for connecting the channel steels. A long groove 15 is opened at the center of the upper plate along the length direction. The main beam 13 located at the bottom includes two channel steels back to back and maintaining a certain distance and a plurality of lower plates for connecting the channel steels. The two end plates 12 are respectively installed at the front end and the rear end to form a stable base. The bottom end of the base 1 is provided with a plurality of bolt connection holes 14 for locking and installing the base.

The screw transmission mechanism 2 includes a screw 21, a screw nut 22, a locking nut 23 and a pair of thrust bearings 24. The screw 21 is a hexagonal prism, a circular step, a trapezoidal thread segment and a triangular thread segment from the large end to the small end. The two ends of the screw 21 pass through the two end plates 12 and are respectively installed with the thrust bearings 24. The small end is installed on the front end plate through the locking nut 23 and the locating pin 25, and the large end is located on the rear end plate as an adjustment end 26.

The screw nut 22 is threadably matched with the trapezoidal thread segment. The screw nut 22, as the action end of the screw transmission mechanism, passes through the long slot 15 and is provided with a plurality of bolt holes. The action end of the screw transmission mechanism is slidably matched with the long slot.

The positioning seat 3 is fixed to the top end of the screw nut 22 through a pressure cover 31 and a screw 32 .

The bottom end of the positioning seat 3 is slidably matched with the upper end surface of the base seat 1, so that the positioning seat 3 can perform linear reciprocating motion along the upper end surface of the base seat 1. A scale 16 is provided on the upper end surface of the base seat 1, and a corresponding scale groove is provided on the positioning seat 3 for obtaining the moving distance.

The rear end face of the positioning seat 3 is an arc surface 33, and the front end of the positioning seat 3 is provided with a right-angled trapezoidal reinforcement rib 34. The bottom end of the positioning seat 3 is provided with a positioning hole and a mounting hole corresponding to the screw nut 22. The positioning hole is used to adapt and position with the top structure of the screw nut 22, and the mounting hole is used to cooperate with the pressure cover 31 and the screw 32 to lock with the screw nut 22.

The adjusting cylinder 4 is a double-acting cylinder, which is installed on the base seat 1 based on the cylinder seat and is located behind the positioning seat 3 . A steel pipe clamping groove 5 is formed between the piston end of the adjusting cylinder 4 and the positioning seat 3 .

The horizontal installation position of the adjusting oil cylinder in the oil cylinder seat is adjustable so as to adapt to different stroke requirements.

Working principle:

The pressure steel pipe circular adjustment seat is used to clamp the pipe petals 6 of the pressure steel pipe. When in use, multiple pressure steel pipe circular adjustment seats are set. After the pipe petals are erected, the lower ends are placed in the steel pipe clamping grooves 5, and the adjusting cylinders 4 are used to tighten them. Each pressure steel pipe circular adjustment seat is placed according to the set angle, and then the moving ability of the screw transmission mechanism 2 of the base seat itself is used to splice the pipe petals of each steel pipe together. After the initial splicing is completed, subsequent welding, adjustment and other processes are carried out to complete the on-site assembly of the entire pressure steel pipe.

The device can be used to assemble pressure steel pipes of various specifications into circles, reducing the difficulty of assembling circles.

Finally, it should be noted that: The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims (8)

1. A penstock assembly circle adjustment seat, characterized in that it includes a base seat, a screw transmission mechanism, a positioning seat and an adjusting cylinder; The base seat is a fixed seat, the screw transmission mechanism is installed on the base seat, the movement direction of the screw transmission mechanism is consistent with the length direction of the base seat, and the upper end surface of the base seat is a supporting limit surface that slides with the positioning seat; The positioning seat is installed at the action end of the screw transmission mechanism, and the bottom end of the positioning seat is slidably matched with the upper end surface of the base seat, so that the positioning seat can perform linear reciprocating motion along the upper end surface of the base seat, and the rear end surface of the positioning seat is an arc surface; The regulating oil cylinder is installed on the base seat and is located behind the positioning seat. A steel pipe clamping groove is formed between the piston end of the regulating oil cylinder and the positioning seat. 2. The penstock circular adjustment seat according to claim 1 is characterized in that: the base seat comprises two main beams and two end plates, the upper main beam comprises two channel steels back to back and maintaining a certain distance and an upper plate for connecting the channel steels, the lower main beam comprises two channel steels back to back and maintaining a certain distance and a plurality of lower plates for connecting the channel steels, and the two end plates are respectively installed at the front end and the rear end; A long slot is provided at the center of the upper plate along the length direction, and the action end of the screw transmission mechanism passes through the long slot and slides in the long slot; The end plate is provided with a mounting hole for mounting a screw transmission mechanism. 3. The penstock circular adjustment seat according to claim 2 is characterized in that: the screw transmission mechanism comprises a screw, a screw nut, a locking nut and a pair of thrust bearings, the screw is a hexagonal prism, a circular step, a trapezoidal thread segment and a triangular thread segment from the large end to the small end, the two ends of the screw pass through the two end plates and are respectively installed with the thrust bearings, the small end is installed on the front end plate through the locking nut and the positioning pin, and the large end is located on the rear end plate as the adjustment end; The screw nut is threadably matched with the trapezoidal thread segment. The screw nut, as the action end of the screw transmission mechanism, passes through a long slot and is provided with a plurality of bolt holes. The positioning seat is fixed to the top end of the screw nut by a gland and screws. 4. The pressure steel pipe assembly circular adjustment seat according to claim 3 is characterized in that: the front end of the positioning seat is provided with a right-angle trapezoidal reinforcement rib, and the bottom end of the positioning seat is provided with a positioning hole and a mounting hole corresponding to the screw nut, the positioning hole is used to adapt and position with the top structure of the screw nut, and the mounting hole is used to cooperate with the pressure cover and the screw to lock the screw nut. 5. The penstock round adjustment seat according to claim 4 is characterized in that a scale is provided on the upper end surface of the base seat, and a scale groove is correspondingly provided on the positioning seat. 6. The pressure steel pipe assembly circular adjustment seat according to claim 5 is characterized in that the adjusting cylinder is installed on the base seat based on the cylinder seat, and the horizontal installation position of the adjusting cylinder in the cylinder seat is adjustable to adapt to different stroke requirements. 7. The penstock circular adjustment seat according to claim 6, characterized in that the regulating cylinder is a double-acting cylinder. 8. The pressure steel pipe circular adjustment seat according to claim 1 is characterized in that a plurality of bolt connection holes are provided at the bottom end of the base seat for locking and installing the base seat.