CN212525565U

CN212525565U - Equipment for preparing standard large-radius steel pipe bent pipe product

Info

Publication number: CN212525565U
Application number: CN202021907933.6U
Authority: CN
Inventors: 刘孟伟; 戴昊
Original assignee: Jinan Maike Pipeline Technology Co ltd
Current assignee: Jinan Maike Pipeline Technology Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-02-12
Anticipated expiration: 2030-09-03

Abstract

The utility model discloses a preparation standard major radius steel pipe return bend product's equipment. The equipment for preparing the standard large-radius steel pipe bent pipe product comprises a strip-shaped frame and a workbench, wherein an 1/4-2/5 concave hollow round table is arranged at the middle upper part of the vertical surface of the left front side of the strip-shaped frame, and two sides of a main shaft are respectively vertically arranged at the central position of the hollow round table by using a bearing with a seat; the large-radius steel pipe bending machine is characterized by further comprising a strip-shaped hollow box body, a main shaft driving device, a large-radius steel pipe bending main clamping die device, a large-radius steel pipe bending auxiliary clamping die device and a large-radius steel pipe supporting and guiding device. The preparation of standard large-radius steel pipe bending products is realized; the large-radius steel pipe bending die is convenient to replace, the replacement efficiency of the large-radius steel pipe bending die is improved, and the manufacturing cost of a large-radius steel pipe bending product is reduced; the labor intensity of workers is reduced.

Description

Equipment for preparing standard large-radius steel pipe bent pipe product

Technical Field

The utility model belongs to an equipment of preparation standard steel pipe return bend product especially belongs to an equipment of preparation standard major radius steel pipe return bend product.

Background

The large-radius steel pipe elbow product generally refers to a standard steel pipe elbow product with the bending radius of R600-1300mm, two ends of the large-radius steel pipe elbow product are steel pipe straight sections, and the length of the part of the two ends of the large-radius steel pipe elbow product, which are the steel pipe straight sections, is generally 1.5 times of the pipe diameter of the large-radius steel pipe. At present, the pipe bending die of the single-end hydraulic pipe bending equipment for large-radius steel pipe bending products generally adopts an integrated wheel die, the product of each specification needs to correspond to a wheel die with a radius, and the market demand can be met only by matching a large number of dies due to the numerous specifications of the pipe bending products, so that the manufacturing cost of the dies of production factories is high. Especially, the large-radius elbow pipe product die has the advantages that the bending radius is large, the occupied area is large, the weight of some dies reaches more than 2 tons, the installation difficulty is high, the time for adjustment is long, the efficiency is low, meanwhile, the dies with the weight of 2 tons are frequently hoisted for installation and debugging, the potential safety hazard exists, and the labor intensity of workers is high. How to make the equipment of a preparation standard large radius steel pipe return bend product, can realize the preparation of standard large radius steel pipe return bend product, can also be convenient change large radius steel pipe bending die utensil, reduce the large radius steel pipe bending die utensil installation adjustment degree of difficulty, reduce the time of changing large radius steel pipe bending die utensil, improve large radius steel pipe bending die utensil and change efficiency, reduce large radius steel pipe return bend product cost of manufacture, eliminate the potential safety hazard, reduce workman intensity of labour is the problem that needs to solve at present.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: provides equipment for preparing a standard large-radius steel pipe bending product. The equipment for preparing the standard large-radius steel pipe elbow product can realize the preparation of the standard large-radius steel pipe elbow product; the large-radius steel pipe bending die can be conveniently replaced, the mounting and adjusting difficulty of the large-radius steel pipe bending die is reduced, the time for replacing the large-radius steel pipe bending die is shortened, the replacement efficiency of the large-radius steel pipe bending die is improved, and the manufacturing cost of a large-radius steel pipe bending product is reduced; the potential safety hazard can be eliminated, and the labor intensity of workers is reduced.

The utility model provides a technical scheme of above-mentioned technical problem is: the utility model provides an equipment of preparation standard large radius steel pipe return bend product, includes preceding, the horizontal bar frame that sets up in back and installs the workstation in the bar frame, characterized by: the strip-shaped machine frame is characterized in that 1/4-2/5 concave hollow round tables are arranged at the middle upper parts of the left side vertical surface and the front side vertical surface of the strip-shaped machine frame, two sides of a main shaft are respectively vertically arranged at the central position of the hollow round table by using a bearing with a seat, and the main shaft vertically arranged at the central position of the hollow round table by using the bearing with the seat is respectively provided with a part extending out of the upper top surface and the lower bottom surface of the; the upper top plate and the lower bottom plate of the strip-shaped hollow box body are respectively provided with a circular lug plate extending out of the left vertical surface of the strip-shaped hollow box body, the left vertical surface of the strip-shaped hollow box body is an inward concave circular arc surface matched with the circular outer surface of the hollow circular table, the middle part of the circular lug plate of the upper top plate of the strip-shaped hollow box body is provided with an upward circular table bulge, the middle part of the circular lug plate of the lower bottom plate of the strip-shaped hollow box body is provided with a downward circular table bulge, the circular lug plate of the middle part of the circular lug plate of the upper top plate of the strip-shaped hollow box body is provided with a through hole matched with the main shaft, the circular lug plate of the upper top plate and the circular lug plate of the lower bottom plate of the strip-shaped hollow box body respectively extends into the hollow circular table and is fixedly arranged on the part of the main shaft, the strip-shaped hollow box body which is arranged on the main shaft by using a through hole and a key which are respectively arranged on the circular lug plate arranged on the upper top plate and the circular lug plate arranged on the lower bottom plate and the circular truncated cone protruding part arranged on the middle part of the circular lug plate is capable of doing circular motion under the power of the main shaft, the left and right longitudinal length of the strip-shaped hollow box body which extends into the hollow truncated cone and is arranged on the part of the main shaft extending out of the upper top surface and the lower bottom surface of the hollow truncated cone is consistent with the left and right transverse length of the workbench, and the main shaft is also; the large-radius steel pipe bending device comprises a main shaft driving device, a large-radius steel pipe bending main clamping die device, a large-radius steel pipe bending auxiliary clamping die device, a large-radius steel pipe supporting and guiding device, and further comprises a hydraulic and electric control device;

the main shaft driving device comprises an A hydraulic cylinder and a B hydraulic cylinder, a chain wheel is arranged at the upper part of the main shaft positioned in the hollow circular truncated cone, and a chain arranged on the chain wheel of the main shaft in a surrounding manner;

the large-radius steel pipe elbow main clamping mould comprises a large-radius steel pipe elbow rotating clamping mould and a large-radius steel pipe elbow follow-up rotating clamping mould, the large-radius steel pipe elbow rotating clamping mould comprises a rotating connecting disc and a fan-shaped large-radius steel pipe elbow mould, a fan-shaped large-radius steel pipe elbow mould mounting base is arranged, the vertical section of the rotating connecting disc is in a convex head shape, the fan-shaped large-radius steel pipe elbow mould comprises 6A fan-shaped large-radius steel pipe elbow mould modules and 1B fan-shaped large-radius steel pipe elbow mould modules, a rolling groove with an inward concave semi-circular arc shape in the vertical section which is consistent with the radius of the large-radius steel pipe is arranged on the vertical face of the side with the larger radius of the A fan-shaped large-radius steel pipe elbow mould module, the circle center line of the transverse section of the bottom of the inward concave semi-circular arc-circular-arc shape rolling groove arranged on the vertical face of the, the vertical section of the large-radius steel pipe bending mould module is an inward concave semi-arc rolling groove, the vertical section of the inward concave semi-arc rolling groove is consistent with the radius of the large-radius steel pipe, the transverse section arc line of the groove bottom of the inward concave semi-arc rolling groove is a straight line segment, and the length of the inward concave semi-arc rolling groove is 200 plus 300 mm; the fan-shaped large-radius steel pipe bending die mounting base comprises 4A fan-shaped large-radius steel pipe bending die mounting base blocks and 1B fan-shaped large-radius steel pipe bending die mounting base block, the vertical sections of the vertical faces on the side with smaller radius of the 4A fan-shaped large-radius steel pipe bending die mounting base blocks and the vertical sections of the vertical faces on the side with smaller radius of the 1B fan-shaped large-radius steel pipe bending die mounting base blocks are convex head-shaped vertical faces matched with a convex head-shaped rotating connecting disc on the vertical sections respectively, and the vertical sections of the vertical faces on the side with larger radius of the 4A fan-shaped large-radius steel pipe bending die mounting base blocks and the 1B fan-shaped large-radius steel pipe bending die mounting base block are convex head-shaped vertical faces respectively; a rotary connecting disc is arranged on the part of the main shaft, which is positioned on the top plate of the strip-shaped hollow box body and is above the circular lug plate middle circular truncated cone protruding part, 4A fan-shaped large-radius steel pipe bending die mounting base blocks and 1B fan-shaped large-radius steel pipe bending die mounting base block are sequentially buckled and mounted on the rotary connecting disc by bolts, the 4A fan-shaped large-radius steel pipe bending die mounting base blocks and the 1B fan-shaped large-radius steel pipe bending die mounting base block which are sequentially buckled and mounted on the rotary connecting disc by bolts are of a mutual occlusion structure of two adjacent vertical faces with the radius, and in an initial state, the adjacent 3A fan-shaped large-radius steel pipe bending die module mounting base blocks which are arranged on the rotary connecting disc and are close to the 1B fan-shaped large-radius steel pipe bending die module mounting base block are sequentially buckled by bolts and are distributed on the workbench in a right angle manner; the 6A fan-shaped large-radius steel pipe bending die module and the 1B fan-shaped large-radius steel pipe bending die module are sequentially buckled and installed on the vertical faces of the 4A fan-shaped large-radius steel pipe bending die module installation base blocks and the 1B fan-shaped large-radius steel pipe bending die module installation base block with the larger radius side, which are respectively in a convex head shape, by bolts, and the 4A fan-shaped large-radius steel pipe bending die module installation base blocks and the 1B fan-shaped large-radius steel pipe bending die module installation base block with the larger radius side, which are respectively in a convex head shape vertical face, are in a mutual interlocking structure by using the 6A fan-shaped large-radius steel pipe bending die module and the 1B fan-shaped large-radius steel pipe bending die module as two adjacent vertical faces with the radius;

the follow-up rotary clamping die for the large-radius steel pipe elbow comprises a follow-up rotary clamping die mounting seat and a follow-up rotary clamping die block, wherein the follow-up rotary clamping die block corresponds to the B fan-shaped large-radius steel pipe elbow die block; the top surface of a strip-shaped hollow box body arranged on the main shaft is longitudinally provided with 2 guide rails, a follow-up rotating clamping mould mounting seat is arranged on the 2 guide rails longitudinally arranged on the top surface of the strip-shaped hollow box body by using an A sliding plate, and the right side vertical surface of a follow-up rotating clamping mould block is arranged on the left side vertical surface of the follow-up rotating clamping mould mounting seat by using a vertical dovetail structure and a bolt; the servo-actuated rotating clamping mould mounting seat pushing device comprises a C hydraulic cylinder, an A servo-actuated rotating clamping mould mounting seat pushing connecting rod and a B servo-actuated rotating clamping mould mounting seat pushing connecting rod, one end of the A servo-actuated rotating clamping mould mounting seat pushing connecting rod is hinged and rotatably mounted in the space at the upper part in the strip-shaped hollow box body by using a mounting shaft, one end of the B servo-actuated rotating clamping mould mounting seat pushing connecting rod is hinged and rotatably mounted on the lower bottom surface of the A sliding plate by using the mounting shaft, the C hydraulic cylinder is mounted on the lower bottom plate of the strip-shaped hollow box body by using a C hydraulic cylinder mounting seat and a pin shaft, the end part of a cylinder lever of the hydraulic cylinder C is hinged with the other end of the A follow-up rotation clamping mould mounting seat pushing connecting rod and the other end of the B follow-up rotation clamping mould mounting seat pushing connecting rod by using a V-shaped cylinder joint; c, a cylinder lever of a hydraulic cylinder extends out and can tightly push an A follow-up rotating clamping die mounting seat to push a connecting rod, a B follow-up rotating clamping die mounting seat to push the connecting rod and sequentially push a follow-up rotating clamping die mounting seat mounted on an A sliding plate, and an inwards concave semi-circular arc rolling groove with a straight-line section as a transverse section arc line at the bottom of a follow-up rotating clamping die block groove mounted on the follow-up rotating clamping die mounting seat, and the inwards concave semi-circular arc rolling groove with a straight-line section as a transverse section arc line at the bottom of a fan-shaped large-radius steel pipe bending die block arranged on the B fan-shaped large-;

the follow-up rotation clamping die block mounting seat guiding device comprises an A guide block and 2A guide shafts, wherein the A guide block is arranged on the upper top surface of a strip-shaped hollow box body on the right side of the 2 guide rails, the upper part of the A guide block on the upper top surface of the strip-shaped hollow box body on the right side of the 2 guide rails is parallelly provided with 2 guide holes matched with the A guide shafts, one ends of the 2A guide shafts respectively penetrate through the 2 guide holes in parallel arrangement of the A guide block and are arranged in the 2 guide holes, and the other ends of the 2A guide shafts are respectively fixedly connected with the right vertical surface of the follow-up rotation clamping die mounting seat in parallel;

the large-radius steel pipe elbow auxiliary clamping die device comprises an auxiliary clamping die mounting seat, an auxiliary clamping die block and a transverse I-shaped sliding block with a vertical section, wherein the transverse I-shaped sliding block with the vertical section is provided with a transverse part and a larger vertical part and a smaller vertical part which are integrally formed at two ends of the transverse part; a rolling groove with a vertical section being an inward concave semi-arc shape and consistent with the radius of the large-radius steel pipe is arranged on the vertical surface of the left side of the auxiliary clamping die block, and a transverse section arc line at the bottom of the inward concave semi-arc rolling groove arranged on the vertical surface of the left side of the auxiliary clamping die block is a straight line segment; the top surface of a workbench close to the rear side of the large-radius steel pipe bent pipe follow-up rotating clamping mould is longitudinally provided with 2 guide rails, an auxiliary clamping mould mounting seat is arranged on the 2 guide rails longitudinally arranged on the top surface of the workbench by using a B sliding plate, sliding grooves matched with a transverse part and a transverse part of a transverse H-shaped sliding block which are integrally formed into a smaller vertical part with a vertical section are arranged on the front and back of the vertical surface of the left side of the auxiliary clamping mould mounting seat, the transverse part and the transverse part of the transverse H-shaped sliding block which are integrally formed into a smaller vertical part are arranged in the sliding grooves arranged on the front and back of the vertical surface of the left side of the auxiliary clamping mould mounting seat, and the vertical surface of the right side of the auxiliary clamping mould block is arranged on the front and back of the vertical surface of the larger vertical part of; the auxiliary clamping die mounting seat pushing device comprises a D hydraulic cylinder, a C auxiliary clamping die mounting seat pushing connecting rod and a D auxiliary clamping die mounting seat pushing connecting rod, one end of the C auxiliary clamping die mounting seat pushing connecting rod is rotatably mounted in a space inside the strip-shaped frame through a mounting shaft in a hinged mode, one end of the D auxiliary clamping die mounting seat pushing connecting rod is rotatably mounted on the lower bottom surface of the B sliding plate through a mounting shaft in a hinged mode, the D hydraulic cylinder is mounted on the strip-shaped frame through a D hydraulic cylinder mounting seat and a pin shaft, and the end of a D hydraulic cylinder lever is connected with the other end of the C auxiliary clamping die mounting seat pushing connecting rod and the other end of the D auxiliary clamping die mounting seat pushing connecting rod through a V-shaped cylinder joint in a hinged mode; d, extending a cylinder lever of a hydraulic cylinder, and being capable of tightly pushing a C auxiliary clamping mould mounting seat to push a connecting rod, a D auxiliary clamping mould mounting seat to push the connecting rod and sequentially pushing an auxiliary clamping mould mounting seat mounted on a B sliding plate, and an auxiliary clamping mould block groove bottom transverse section arc line mounted on the auxiliary clamping mould mounting seat, wherein the auxiliary clamping mould mounting seat is a straight-line-section concave semi-circular arc rolling groove, and a groove bottom transverse section arc line arranged on a B fan-shaped large-radius steel pipe bending mould block is a straight-line-section concave semi-circular arc rolling groove which is matched with a groove bottom transverse section arc line arranged on the B fan-shaped large-radius steel pipe bending mould block and is a straight-line-section concave semi-circular arc; the auxiliary clamping mould block pushing device comprises an E auxiliary clamping mould block front and back pushing cylinder, a square short cylinder matched with the E auxiliary clamping mould block front and back pushing cylinder is fixedly arranged on the position, corresponding to the front and back sliding grooves, of the rear side vertical surface of the auxiliary clamping mould mounting seat, the E auxiliary clamping mould block front and back pushing cylinder is arranged on the lower bottom surface of the square short cylinder fixedly arranged on the rear side vertical surface of the auxiliary clamping mould mounting seat through the E auxiliary clamping mould block front and back pushing cylinder mounting seat, and a E auxiliary clamping mould block front and back pushing cylinder lever is fixedly connected with the rear vertical surface of a sliding block, of which the vertical section is in a transverse H shape, in the front and back sliding grooves of the left side vertical surface of the auxiliary clamping mould mounting seat through a connecting piece;

the auxiliary clamping die mounting seat guiding device comprises a B guide block and 2B guide shafts, wherein the B guide block is arranged on the top surface of a bar-shaped workbench positioned on the right side of 2 guide rails, 2 guide holes matched with the B guide shafts are arranged in parallel on the upper part of the B guide block arranged on the top surface of the bar-shaped workbench on the right side of the 2 guide rails, one ends of the 2B guide shafts respectively penetrate through the 2 guide holes arranged in parallel on the B guide block and are arranged in the 2 guide holes, and the other ends of the 2B guide shafts are respectively fixedly connected with the right vertical surface of the auxiliary clamping die mounting seat in parallel;

the large-radius steel pipe supporting and guiding device comprises an F hydraulic cylinder, a core rod and a core rod, wherein the outer diameter of the core rod is consistent with the inner diameter of the large-radius steel pipe, the F hydraulic cylinder is transversely arranged on the top surface of the rear part of the workbench, which is close to the right side, by using an F hydraulic cylinder mounting seat, the end part of a lever of the F hydraulic cylinder is fixedly connected with one end of the core rod by using a connecting piece, the core rod with the outer diameter consistent with the inner diameter of the large-radius steel pipe is fixedly connected with the other end of the, when the F hydraulic cylinder lever extends out to push the core rod and the core rod fixedly installed at the end part of the core rod through threads to be positioned at the bending processing station of the large-radius steel pipe to be processed, one end of the large-radius steel pipe to be processed can be pushed into a mandrel rod fixedly connected with the F hydraulic cylinder lever and a mandrel fixedly connected with the mandrel rod through threads, and the mandrel fixedly connected with the mandrel rod through threads can support, guide and position the large-radius steel pipe to be processed.

The hydraulic and electric control device adopts the prior art and is controlled by a PLC control cabinet.

The utility model discloses a use is: selecting a corresponding fan-shaped large-radius steel pipe bending die mounting base and a fan-shaped large-radius steel pipe bending die according to the bending radius of a large-radius steel pipe product to be processed, sequentially fastening and mounting 4A fan-shaped large-radius steel pipe bending die mounting base blocks and 1B fan-shaped large-radius steel pipe bending die mounting base block of the fan-shaped large-radius steel pipe bending die mounting base block on a rotary connecting disc by using bolts, and sequentially fastening and mounting 6A fan-shaped large-radius steel pipe bending die blocks and 1B fan-shaped large-radius steel pipe bending die block of the fan-shaped large-radius steel pipe bending die on the 4A fan-shaped large-radius steel pipe bending die mounting base blocks and 1B fan-shaped large-radius steel pipe bending die mounting base block by using bolts; selecting a follow-up rotating clamping die block corresponding to the B fan-shaped large-radius steel pipe bending die block, and installing the follow-up rotating clamping die block corresponding to the B fan-shaped large-radius steel pipe bending die block on a follow-up rotating clamping die installation seat by using a vertical dovetail structure and a bolt; selecting an auxiliary clamping die mounting seat, an auxiliary clamping die block and a sliding block with a vertical cross section in a transverse H shape, wherein the auxiliary clamping die mounting seat corresponds to 6A fan-shaped large-radius steel pipe bending dies, the sliding block with the vertical cross section in the transverse H shape is integrated with the transverse part to form a smaller vertical part, the transverse part and the transverse part of the sliding block with the vertical cross section in the transverse H shape are mounted in a sliding groove formed in the front and back of the left side vertical face of the auxiliary clamping die mounting seat, and the auxiliary clamping die block right side vertical face is mounted in the front and back of a larger vertical part left side vertical face of the sliding block with the vertical cross section in the transverse H shape outside the sliding groove; selecting a mandrel thread of a large-radius steel pipe supporting and guiding device which is consistent with the inner diameter of a large-radius steel pipe to be processed, installing the mandrel thread on a mandrel rod, pushing one end of the large-radius steel pipe to be processed into a mandrel rod fixedly connected with an F hydraulic cylinder lever and a mandrel fixedly connected with the mandrel rod thread, and adjusting the distance between the front end part of the mandrel and the front end orifice of the large-radius steel pipe to be processed to be 1.5 times of the diameter of the large-radius steel pipe according to the standard that the length of the two ends of a large-radius steel pipe bent pipe product, which are straight pipe sections of the steel pipe, is usually 1.5; starting a C hydraulic cylinder, wherein a lever of the C hydraulic cylinder extends out to tightly push an A follow-up rotation clamping die mounting seat to push a connecting rod, a B follow-up rotation clamping die mounting seat to push the connecting rod and sequentially push a follow-up rotation clamping die mounting seat mounted on an A sliding plate, and a follow-up rotation clamping die block mounted on the follow-up rotation clamping die mounting seat has a groove bottom transverse section arc line which is a straight-line-section concave semi-arc rolling groove and a groove bottom transverse section arc line arranged on a B fan-shaped large-radius steel pipe bending die block which is a straight-line-section concave semi-arc rolling groove to be matched with the straight-line-section concave semi-arc rolling; starting a D hydraulic cylinder, wherein a lever of the D hydraulic cylinder extends out to tightly push a C auxiliary clamping mould mounting seat to push a connecting rod, a D auxiliary clamping mould mounting seat to push the connecting rod and sequentially push an auxiliary clamping mould mounting seat mounted on a B sliding plate, and an auxiliary clamping mould block mounted on the auxiliary clamping mould mounting seat, wherein the transverse section arc line at the bottom of the auxiliary clamping mould block groove is a straight-line-section concave semi-circular arc rolling groove, the groove bottom transverse section arc line arranged on a B fan-shaped large-radius steel pipe bending mould block is a straight-line-section concave semi-circular arc rolling groove, and the groove bottom transverse section arc line arranged on the B fan-shaped large-radius steel pipe bending mould block is a straight-line-section concave semi-circular arc rolling groove to assist; starting the hydraulic cylinder A and the hydraulic cylinder B, wherein the lever of the hydraulic cylinder A contracts, the lever of the hydraulic cylinder B extends, the lever of the hydraulic cylinder A pulls a chain which is hinged and connected by a V-shaped air cylinder joint to drive a main shaft chain wheel to drive a main shaft to rotate clockwise, a key is arranged on a main shaft rotating connecting disc to drive a fan-shaped large-radius steel pipe bending die mounting base, a fan-shaped large-radius steel pipe bending die and a follow-up rotating clamping die block which is arranged on the left vertical face of a follow-up rotating clamping die mounting base on the upper top surface 2 guide rails of the strip-shaped hollow box body to rotate clockwise, and the follow-up rotating clamping die block arranged on the follow-up rotating clamping die mounting base and the fan-shaped large-radius steel pipe bending die block of the fan-shaped large-radius steel pipe; meanwhile, an E auxiliary clamping die block of the large-radius steel pipe bending auxiliary clamping die device pushes a cylinder lever to extend forwards and backwards, pushes an auxiliary clamping die block with a transverse H-shaped vertical section in a front and back sliding groove of a left vertical surface of an auxiliary clamping die mounting seat in a sliding mode, and drives an auxiliary clamping die block with a transverse H-shaped vertical section on the left vertical surface of a larger vertical part of the transverse H-shaped sliding block to rotate a clamping die block with boosting follow-up of the auxiliary clamping die block and a B fan-shaped large-radius steel pipe bending die block to cooperate and fixedly clamp a large-radius steel pipe to be processed to perform first bending rotation clockwise; the servo rotating clamping die block mounted on the servo rotating clamping die mounting seat and the B fan-shaped large-radius steel pipe bending die block of the fan-shaped large-radius steel pipe bending die are matched with and fixedly clamped large-radius steel pipes to be processed to finish a first bending rotation stroke clockwise, the D hydraulic cylinder is reset, the E auxiliary clamping die block front and back pushing cylinder is reset, the A hydraulic cylinder and the B hydraulic cylinder are started again, the D hydraulic cylinder and the E auxiliary clamping die block front and back pushing cylinder are started, and the servo rotating clamping die block mounted on the servo rotating clamping die mounting seat and the B fan-shaped large-radius steel pipe bending die block of the fan-shaped large-radius steel pipe bending die are matched with and fixedly clamped large-radius steel pipes to be processed to perform second bending rotation clockwise; until the preparation process of the large-radius steel pipe bent pipe product to be processed is completely finished, the F hydraulic cylinder is reset, the C hydraulic cylinder and the D hydraulic cylinder are reset, the E auxiliary clamping die block pushes the cylinders to reset back and forth, and the large-radius steel pipe bent pipe product to be processed is taken down and stored in a large-radius steel pipe bent pipe product bin; starting the hydraulic cylinder A and the hydraulic cylinder B, contracting a lever of the hydraulic cylinder B, extending a lever of the hydraulic cylinder A, pulling a chain which is hinged by a V-shaped cylinder joint to drive a main shaft chain wheel to drive a main shaft to reset along counterclockwise rotation, installing a key on a main shaft rotation connection disc to drive a fan-shaped large-radius steel pipe bending die module installation base, a fan-shaped large-radius steel pipe bending die and a follow-up rotation clamping die module which is installed on a left side vertical face of a follow-up rotation clamping die installation base on 2 guide rails on the upper top surface of the strip-shaped hollow box body to reset along counterclockwise rotation, and repeating the preparation process of the next large-radius steel pipe bent.

The utility model has the advantages that: because the utility model is provided with the bar-shaped frame which is arranged horizontally at the front and the back and the workbench which is arranged on the bar-shaped frame, the hollow round table which is 1/4-2/5 concave inwards is arranged at the middle upper position of the vertical surface at the left front side of the bar-shaped frame, and two sides of a main shaft are respectively vertically arranged at the central position of the hollow round table by using a bearing with a seat; the device is also provided with a strip-shaped hollow box body, a main shaft driving device, a large-radius steel pipe bending main clamping die device, a large-radius steel pipe bending auxiliary clamping die device, a large-radius steel pipe supporting and guiding device and a hydraulic and electric appliance control device; the utility model realizes the preparation of standard large-radius steel pipe bending products; the large-radius steel pipe bending die is convenient to replace, the mounting and adjusting difficulty of the large-radius steel pipe bending die is reduced, the time for replacing the large-radius steel pipe bending die is shortened, the replacement efficiency of the large-radius steel pipe bending die is improved, and the manufacturing cost of a large-radius steel pipe bending product is reduced; and potential safety hazards are eliminated, and the labor intensity of workers is reduced.

Drawings

The present invention will be further explained with reference to the drawings and examples;

FIG. 1 is a plan view of the present invention

Fig. 2 is a schematic structural diagram of the present invention;

fig. 3 is a right side view of the present invention;

FIG. 4 is an enlarged schematic view of the rotary clamping mold for large-radius steel pipe bends of the present invention;

FIG. 5 is an enlarged top view of the rotary clamping mold for large-radius steel pipe elbows of the present invention;

in the drawings: 1. the device comprises a strip-shaped frame, a 2. workbench, a 3. hollow circular table, a 4. main shaft, a 5. strip-shaped hollow box body, a 6.A hydraulic cylinder, a 7.B hydraulic cylinder, a 8. chain wheel, a 9. rotating connecting disc, a 10.A fan-shaped large-radius steel pipe bending die module, a 11.B fan-shaped large-radius steel pipe bending die module, a 12.A fan-shaped large-radius steel pipe bending die module mounting base block, a 13.B fan-shaped large-radius steel pipe bending die module mounting base block, a 14. follow-up rotating clamping die mounting base, a 15. follow-up rotating clamping die block, a 16.C hydraulic cylinder, a 17.A follow-up rotating clamping die mounting base pushing connecting rod, a 18.B follow-up rotating clamping die mounting base pushing connecting rod, a 19.A guide block, a 20.A guide shaft, a 21. auxiliary clamping die mounting base, a 22. auxiliary clamping die block, a 23. vertical section transverse H-shaped sliding block, a 24.D hydraulic cylinder, a 25.E auxiliary clamping die block pushing cylinder, 26. The device comprises a square short cylinder, 27.B guide blocks, 28.B guide shafts, 29.F hydraulic cylinders, 30. core rods, 31. core rod rods.

Detailed Description

The present invention will be described in further detail with reference to the following examples.

Example 1

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, an apparatus for manufacturing a standard large-radius steel pipe elbow product comprises a bar-shaped frame 1 transversely arranged in front and at the back, and a workbench 2 installed on the bar-shaped frame (an observer faces to the utility model, one side close to the workbench is the front side of the workbench, one side far away from the workbench is the back side of the workbench, the left side of the observer is the left side of the workbench, and the right side of the observer is the right side of the workbench), and is characterized in that: 1/4 concave hollow circular truncated cones 3 are arranged at the middle upper part of the vertical surface of the left front side of the strip-shaped frame 1, two sides of a main shaft 4 are respectively vertically arranged at the central positions of the hollow circular truncated cones 3 by using a bearing with a seat, and the main shaft 4 vertically arranged at the central position of the hollow circular truncated cones 3 by using the bearing with the seat is respectively provided with a part extending out of the upper top surfaces and the lower bottom surfaces of the hollow circular truncated cones 3; the improved structure is characterized by further comprising a strip-shaped hollow box body 5, wherein the upper top plate and the lower bottom plate of the strip-shaped hollow box body 5 are respectively provided with a circular lug plate extending out of the left vertical surface of the strip-shaped hollow box body, the left vertical surface of the strip-shaped hollow box body 5 is an inward concave arc surface matched with the arc outer surface of the hollow round platform 3, the middle part of the circular lug plate of the upper top plate of the strip-shaped hollow box body 5 is provided with an upward round platform convex part, the middle part of the circular lug plate of the lower bottom plate of the strip-shaped hollow box body 5 is provided with a downward round platform convex part, the middle part of the round platform convex part of the circular lug plate of the upper top plate of the strip-shaped hollow box body 5 is provided with a through hole matched with the spindle 4, the circular lug plates respectively arranged on the upper top plate and the lower bottom plate of the strip-shaped hollow box body 5 extend into the hollow round platform 3 and are fixedly The strip-shaped hollow box body 5 which is arranged on the main shaft 4 by using a through hole and a key which are respectively arranged on a circular lug plate arranged on an upper top plate and a circular lug plate arranged on a lower bottom plate of the strip-shaped hollow box body 5 can do circular motion under the power of the main shaft, the strip-shaped hollow box body 5 which extends into the hollow circular truncated cone and is arranged on the part of the main shaft 4 extending out of the upper top surface and the lower bottom surface of the hollow circular truncated cone has the left and right longitudinal length consistent with the left and right transverse length of the workbench 2, and the main shaft 4 also has a part which extends out of the circular lug plate arranged; the large-radius steel pipe bending device comprises a main shaft driving device, a large-radius steel pipe bending main clamping die device, a large-radius steel pipe bending auxiliary clamping die device, a large-radius steel pipe supporting and guiding device, and further comprises a hydraulic and electric control device;

the main shaft driving device comprises an A hydraulic cylinder 6 and a B hydraulic cylinder 7, a chain wheel 8 is arranged at the upper part of the main shaft 4 positioned in the hollow circular truncated cone 3, and the main shaft driving device also comprises a chain which is arranged on the main shaft chain wheel 8 in a surrounding manner, a through hole which is arranged on the main shaft chain wheel 8 in a surrounding manner and can pass through the chain is arranged on the concave arc surface connected with the left front side vertical surface of the hollow circular truncated cone 3 and the strip-shaped frame 1, the A hydraulic cylinder 6 and the B hydraulic cylinder 7 are respectively arranged on the strip-shaped frame 1 in a left and right transverse state by correspondingly surrounding the chain arranged on the main shaft chain wheel 8 by using an A hydraulic cylinder mounting seat, and the B hydraulic cylinder mounting seat is respectively arranged on the strip-shaped frame 1, and the;

the large-radius steel pipe elbow main clamping mould comprises a large-radius steel pipe elbow rotating clamping mould and a large-radius steel pipe elbow follow-up rotating clamping mould, the large-radius steel pipe elbow rotating clamping mould comprises a rotating connecting disc 9 and a fan-shaped large-radius steel pipe elbow mould, a fan-shaped large-radius steel pipe elbow mould mounting base is arranged, the vertical section of the rotating connecting disc is in a convex head shape, the fan-shaped large-radius steel pipe elbow mould comprises 6A fan-shaped large-radius steel pipe elbow mould modules 10 and 1B fan-shaped large-radius steel pipe elbow mould module 11, a rolling groove with an inwards concave semi-circular arc-shaped vertical section consistent with the radius of the large-radius steel pipe is arranged on the vertical face of the larger-radius side of the A fan-shaped large-radius steel pipe elbow mould module 10, the arc line of the transverse section of the bottom of the inwards concave semi-circular-arc-shaped rolling groove arranged on the vertical face of the larger-, a vertical face of the larger-radius side of the sector large-radius steel pipe bending mold module 11 is provided with a rolling groove which has a concave semi-arc vertical section consistent with the radius of the large-radius steel pipe, a transverse section arc line at the bottom of the concave semi-arc rolling groove arranged on the vertical face of the larger-radius side of the sector large-radius steel pipe bending mold module 11 is a straight line segment, and the length of the concave semi-arc rolling groove which is the straight line segment on the vertical face of the larger-radius side of the sector large-radius steel pipe bending mold module 11 is 200 mm; the fan-shaped large-radius steel pipe bending die block mounting base comprises 4A fan-shaped large-radius steel pipe bending die block mounting base blocks 12 and 1B fan-shaped large-radius steel pipe bending die block mounting base block 13, the vertical sections of the small-radius side vertical faces of the 4A fan-shaped large-radius steel pipe bending die block mounting base blocks 12 and the 1B fan-shaped large-radius steel pipe bending die block mounting base block 13 are convex head-shaped vertical faces matched with a convex head-shaped rotating connecting disc of the vertical sections respectively, and the vertical sections of the large-radius side vertical faces of the 4A fan-shaped large-radius steel pipe bending die block mounting base blocks 12 and the 1B fan-shaped large-radius steel pipe bending die block mounting base block 13 are convex head-shaped vertical faces respectively; a rotary connecting disc 9 is installed on the part of the main shaft 4 which is positioned on the convex part of the circular lug plate middle circular table of the top plate on the strip-shaped hollow box body 5 by using a key, 4A fan-shaped large-radius steel pipe bending die module installing base blocks 12 and 1B fan-shaped large-radius steel pipe bending die module installing base block 13 with smaller radius are sequentially installed on the rotary connecting disc 9 by using bolts in a buckling way, the 4A fan-shaped large-radius steel pipe bending die module installing base blocks 12 and 1B fan-shaped large-radius steel pipe bending die module installing base block 13 which are installed on the rotary connecting disc 9 by using bolts in a buckling way are of a mutual occlusion structure, and in an initial state, the adjacent 3A fan-shaped large-radius steel pipe bending die module mounting base blocks 12 which are arranged on the rotary connecting disc 9 and are close to the 1B fan-shaped large-radius steel pipe bending die module mounting base block 13 are sequentially buckled by bolts and are distributed on the workbench 2 in a right angle manner; the 6A fan-shaped large-radius steel pipe bending die modules 10 and the 1B fan-shaped large-radius steel pipe bending die modules 11 are sequentially buckled and installed on the vertical sections of the 4A fan-shaped large-radius steel pipe bending die module installation base blocks 12 and the 1B fan-shaped large-radius steel pipe bending die module installation base blocks 13 on the side with the larger radius by bolts, which are respectively convex head-shaped vertical surfaces, and the 6A fan-shaped large-radius steel pipe bending die modules 10 and the 1B fan-shaped large-radius steel pipe bending die modules 11 on the convex head-shaped vertical surfaces are respectively in a mutual meshing structure;

the follow-up rotary clamping die for the large-radius steel pipe elbow comprises a follow-up rotary clamping die mounting seat 14 and a follow-up rotary clamping die block 15, wherein the follow-up rotary clamping die block 15 corresponds to the B fan-shaped large-radius steel pipe elbow die block 11, a rolling groove with a concave semi-arc vertical section and a concave semi-arc bottom transverse section, the radius of the vertical section is consistent with that of the large-radius steel pipe, is arranged on the vertical surface of the left side of the follow-up rotary clamping die block 15, and a straight line section is formed at the bottom of the concave semi-arc rolling groove; 2 guide rails are longitudinally arranged on the top surface of a strip-shaped hollow box body 5 arranged on a main shaft 4, a follow-up rotating clamping die mounting seat 14 is arranged on the 2 guide rails longitudinally arranged on the top surface of the strip-shaped hollow box body 5 by using an A sliding plate, and the right side vertical surface of a follow-up rotating clamping die block 15 is arranged on the left side vertical surface of the follow-up rotating clamping die mounting seat 14 by using a vertical dovetail structure and a bolt; the device comprises a servo-rotating clamping die mounting seat pushing device and a servo-rotating clamping die block mounting seat guiding device, wherein the servo-rotating clamping die mounting seat pushing device comprises a C hydraulic cylinder 16, an A servo-rotating clamping die mounting seat pushing connecting rod 17 and a B servo-rotating clamping die mounting seat pushing connecting rod 18, one end of the A servo-rotating clamping die mounting seat pushing connecting rod 17 is hinged and rotatably mounted in the space at the upper part in the bar-shaped hollow box body 5 through a mounting shaft, one end of the B servo-rotating clamping die mounting seat pushing connecting rod 18 is hinged and rotatably mounted on the lower bottom surface of an A sliding plate through the mounting shaft, the C hydraulic cylinder 16 is mounted on the lower bottom plate of the bar-shaped hollow box body 5 through a C hydraulic cylinder mounting seat and a pin shaft, the end part of a C hydraulic cylinder lever is respectively connected with the other end of the A servo-rotating clamping die, B, the follow-up rotation clamping die mounting seat pushes the other end of the connecting rod 18 to be hinged; c, a cylinder lever of a hydraulic cylinder extends out and can tightly push an A follow-up rotation clamping die mounting seat pushing connecting rod 17 and a B follow-up rotation clamping die mounting seat pushing connecting rod 18 and sequentially push a follow-up rotation clamping die mounting seat 14 mounted on an A sliding plate and a follow-up rotation clamping die block 15 mounted on the follow-up rotation clamping die mounting seat 14, and an inner concave semi-circular arc rolling groove with a straight line-shaped bottom transverse section arc line and a straight line-shaped bottom transverse section arc line arranged on a B fan-shaped large-radius steel pipe bending die block 11 are matched to fixedly clamp the large-radius steel pipe;

the follow-up rotation clamping die block mounting seat guiding device comprises an A guide block 19 and 2A guide shafts 20, wherein the A guide block 19 is mounted on the upper top surface of a strip-shaped hollow box body 5 positioned on the right side of 2 guide rails, 2 guide holes matched with the A guide shafts 20 are formed in parallel in the upper part of the A guide block 19 mounted on the upper top surface of the strip-shaped hollow box body 5 on the right side of the 2 guide rails, one ends of the 2A guide shafts 20 penetrate through the 2 guide holes formed in parallel in the A guide block 19 respectively and are mounted in the 2 guide holes, and the other ends of the 2A guide shafts 20 are fixedly connected with the right vertical surface of the follow-up rotation clamping die mounting seat 14 in parallel respectively;

the large-radius steel pipe elbow auxiliary clamping die device comprises an auxiliary clamping die mounting seat 21, an auxiliary clamping die block 22 and a transverse I-shaped sliding block 23 with a vertical section, wherein the transverse I-shaped sliding block with a vertical section is provided with a transverse part and a larger vertical part and a smaller vertical part which are integrally formed at two ends of the transverse part; a rolling groove with a vertical section being an inward concave semi-arc shape and consistent with the radius of the large-radius steel pipe is arranged on the vertical surface of the left side of the auxiliary clamping die block 22, and the arc line of the transverse section of the bottom of the inward concave semi-arc rolling groove arranged on the vertical surface of the left side of the auxiliary clamping die block 22 is a straight line segment; the top surface of a workbench 2 close to the rear side of a large-radius steel pipe bent pipe follow-up rotating clamping mold is longitudinally provided with 2 guide rails, an auxiliary clamping mold mounting seat 21 is installed on the 2 guide rails longitudinally arranged on the top surface of the workbench 2 by using a B sliding plate, sliding grooves matched with a transverse part and a transverse part of a sliding block with a transverse H-shaped vertical section which are integrally formed into a smaller vertical part are arranged on the front and back of the left vertical surface of the auxiliary clamping mold mounting seat 21, the transverse part and the transverse part of the sliding block with the transverse H-shaped vertical section which are integrally formed into a smaller vertical part are installed in the sliding grooves arranged on the front and back of the left vertical surface of the auxiliary clamping mold mounting seat 21, and the right vertical surface of an auxiliary clamping mold block 22 is installed on the left vertical surface of a larger vertical part of which the transverse H-shaped sliding block 23 is positioned outside; also comprises an auxiliary clamping mould mounting seat pushing device, an auxiliary clamping mould mounting seat guiding device and an auxiliary clamping mould block pushing device, the auxiliary clamping die mounting seat pushing device comprises a D hydraulic cylinder 24, a C auxiliary clamping die mounting seat pushing connecting rod (not shown in the attached drawing of the specification), and a D auxiliary clamping die mounting seat pushing connecting rod (not shown in the attached drawing of the specification), wherein one end of the C auxiliary clamping die mounting seat pushing connecting rod is hinged and rotatably mounted in a space inside the strip-shaped frame by using a mounting shaft, one end of the D auxiliary clamping die mounting seat pushing connecting rod is hinged and rotatably mounted on the lower bottom surface of the B sliding plate by using a mounting shaft, the D hydraulic cylinder 24 is mounted on the strip-shaped frame 1 by using a D hydraulic cylinder mounting seat and a pin shaft, and the end part of a D hydraulic cylinder lever is hinged and connected with the other end of the C auxiliary clamping die mounting seat pushing connecting rod and the other end of the D auxiliary clamping die mounting seat pushing connecting rod respectively by using; a D hydraulic cylinder lever extends out and can tightly push a C auxiliary clamping mould mounting seat pushing connecting rod and a D auxiliary clamping mould mounting seat pushing connecting rod and sequentially push an auxiliary clamping mould mounting seat 21 mounted on a B sliding plate and an auxiliary clamping mould block 22 mounted on the auxiliary clamping mould mounting seat 21, wherein the bottom transverse section arc line of the concave semicircular arc rolling groove is a straight line section, the bottom transverse section arc line arranged on the B fan-shaped large-radius steel pipe bending mould block 11 is a straight line section, and the bottom transverse section arc line arranged on the B fan-shaped large-radius steel pipe bending mould block 11 is matched with the straight line section semicircular arc rolling groove to clamp the large-radius concave steel pipe in an auxiliary manner; the auxiliary clamping mould block pushing device comprises an E auxiliary clamping mould block front and back pushing cylinder 25, a square short cylinder 26 matched with the E auxiliary clamping mould block front and back pushing cylinder 25 is further fixedly arranged on the position, corresponding to the front and back sliding grooves, of the back vertical surface of the auxiliary clamping mould mounting seat 21, the E auxiliary clamping mould block front and back pushing cylinder 25 is mounted on the lower bottom surface of the square short cylinder 26 fixedly arranged on the back vertical surface of the auxiliary clamping mould mounting seat 21 by using the E auxiliary clamping mould block front and back pushing cylinder mounting seat, and a E auxiliary clamping mould block front and back pushing cylinder lever is fixedly connected with the back vertical surface of a transverse H-shaped sliding block 23 through a connecting piece and a vertical section slidably mounted in the front and back sliding groove of the left vertical surface of the auxiliary clamping mould mounting seat 21;

the auxiliary clamping die mounting seat guiding device comprises a B guide block 27 and 2B guide shafts 28, the B guide block 27 is mounted on the top surface of the strip-shaped workbench 2 positioned on the right side of the 2 guide rails, 2 guide holes matched with the B guide shafts 28 are formed in the upper part of the B guide block 27 mounted on the top surface of the strip-shaped workbench on the right side of the 2 guide rails in parallel, one ends of the 2B guide shafts 28 penetrate through the 2 guide holes formed in the B guide block 27 in parallel and are mounted in the 2 guide holes, and the other ends of the 2B guide shafts 28 are fixedly connected with the right vertical surface of the auxiliary clamping die mounting seat 21 in parallel;

the large-radius steel pipe supporting and guiding device comprises an F hydraulic cylinder 29, a core rod 30 and a core rod 31, wherein the outer diameter of the core rod 30 is consistent with the inner diameter of the large-radius steel pipe, the F hydraulic cylinder 29 is transversely arranged on the top surface of the rear part of the workbench 2 close to the right side by using an F hydraulic cylinder mounting seat, the end part of a lever of the F hydraulic cylinder is fixedly connected with one end of the core rod 31 by using a connecting piece, the core rod 30 with the outer diameter consistent with the inner diameter of the large-radius steel pipe is fixedly connected with the other end of the core rod 31 by, when the F hydraulic cylinder 29 extends out to push the core rod 31 and the core rod 30 fixedly installed at the end part of the core rod 31 through threads to be positioned at a bending processing station for processing the large-radius steel pipe, one end of the large-radius steel pipe to be processed can be pushed into a core rod 31 fixedly connected with an F hydraulic cylinder lever and a core rod 30 fixedly connected with the core rod through threads, and the core rod 30 fixedly connected with the core rod 31 through threads can support, guide and position the large-radius steel pipe to be processed.

Example 2

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, an apparatus for manufacturing a standard large-radius steel pipe elbow product comprises a bar-shaped frame 1 transversely arranged in front and at the back, and a workbench 2 installed on the bar-shaped frame (an observer faces to the utility model, one side close to the workbench is the front side of the workbench, one side far away from the workbench is the back side of the workbench, the left side of the observer is the left side of the workbench, and the right side of the observer is the right side of the workbench), and is characterized in that: 2/5 concave hollow circular truncated cones 3 are arranged at the middle upper part of the vertical surface of the left front side of the strip-shaped frame 1, two sides of a main shaft 4 are respectively vertically arranged at the central positions of the hollow circular truncated cones 3 by using a bearing with a seat, and the main shaft 4 vertically arranged at the central position of the hollow circular truncated cones 3 by using the bearing with the seat is respectively provided with a part extending out of the upper top surfaces and the lower bottom surfaces of the hollow circular truncated cones 3; the improved structure is characterized by further comprising a strip-shaped hollow box body 5, wherein the upper top plate and the lower bottom plate of the strip-shaped hollow box body 5 are respectively provided with a circular lug plate extending out of the left vertical surface of the strip-shaped hollow box body, the left vertical surface of the strip-shaped hollow box body 5 is an inward concave arc surface matched with the arc outer surface of the hollow round platform 3, the middle part of the circular lug plate of the upper top plate of the strip-shaped hollow box body 5 is provided with an upward round platform convex part, the middle part of the circular lug plate of the lower bottom plate of the strip-shaped hollow box body 5 is provided with a downward round platform convex part, the middle part of the round platform convex part of the circular lug plate of the upper top plate of the strip-shaped hollow box body 5 is provided with a through hole matched with the spindle 4, the circular lug plates respectively arranged on the upper top plate and the lower bottom plate of the strip-shaped hollow box body 5 extend into the hollow round platform 3 and are fixedly The strip-shaped hollow box body 5 which is arranged on the main shaft 4 by using a through hole and a key which are respectively arranged on a circular lug plate arranged on an upper top plate and a circular lug plate arranged on a lower bottom plate of the strip-shaped hollow box body 5 can do circular motion under the power of the main shaft, the strip-shaped hollow box body 5 which extends into the hollow circular truncated cone and is arranged on the part of the main shaft 4 extending out of the upper top surface and the lower bottom surface of the hollow circular truncated cone has the left and right longitudinal length consistent with the left and right transverse length of the workbench 2, and the main shaft 4 also has a part which extends out of the circular lug plate arranged; the large-radius steel pipe bending device comprises a main shaft driving device, a large-radius steel pipe bending main clamping die device, a large-radius steel pipe bending auxiliary clamping die device, a large-radius steel pipe supporting and guiding device, and further comprises a hydraulic and electric control device;

the large-radius steel pipe elbow main clamping mould comprises a large-radius steel pipe elbow rotating clamping mould and a large-radius steel pipe elbow follow-up rotating clamping mould, the large-radius steel pipe elbow rotating clamping mould comprises a rotating connecting disc 9 and a fan-shaped large-radius steel pipe elbow mould, a fan-shaped large-radius steel pipe elbow mould mounting base is arranged, the vertical section of the rotating connecting disc is in a convex head shape, the fan-shaped large-radius steel pipe elbow mould comprises 6A fan-shaped large-radius steel pipe elbow mould modules 10 and 1B fan-shaped large-radius steel pipe elbow mould module 11, a rolling groove with an inwards concave semi-circular arc-shaped vertical section consistent with the radius of the large-radius steel pipe is arranged on the vertical face of the larger-radius side of the A fan-shaped large-radius steel pipe elbow mould module 10, the arc line of the transverse section of the bottom of the inwards concave semi-circular-arc-shaped rolling groove arranged on the vertical face of the larger-, a vertical face of the larger-radius side of the sector large-radius steel pipe bending mold module 11 is provided with a rolling groove which has a concave semi-arc vertical section consistent with the radius of the large-radius steel pipe, a transverse section arc line at the bottom of the concave semi-arc rolling groove arranged on the vertical face of the larger-radius side of the sector large-radius steel pipe bending mold module 11 is a straight line segment, and the length of the concave semi-arc rolling groove which is the straight line segment on the vertical face of the larger-radius side of the sector large-radius steel pipe bending mold module 11 is 300 mm; the fan-shaped large-radius steel pipe bending die block mounting base comprises 4A fan-shaped large-radius steel pipe bending die block mounting base blocks 12 and 1B fan-shaped large-radius steel pipe bending die block mounting base block 13, the vertical sections of the small-radius side vertical faces of the 4A fan-shaped large-radius steel pipe bending die block mounting base blocks 12 and the 1B fan-shaped large-radius steel pipe bending die block mounting base block 13 are convex head-shaped vertical faces matched with a convex head-shaped rotating connecting disc of the vertical sections respectively, and the vertical sections of the large-radius side vertical faces of the 4A fan-shaped large-radius steel pipe bending die block mounting base blocks 12 and the 1B fan-shaped large-radius steel pipe bending die block mounting base block 13 are convex head-shaped vertical faces respectively; a rotary connecting disc 9 is installed on the part of the main shaft 4 which is positioned on the convex part of the circular lug plate middle circular table of the top plate on the strip-shaped hollow box body 5 by using a key, 4A fan-shaped large-radius steel pipe bending die module installing base blocks 12 and 1B fan-shaped large-radius steel pipe bending die module installing base block 13 with smaller radius are sequentially installed on the rotary connecting disc 9 by using bolts in a buckling way, the 4A fan-shaped large-radius steel pipe bending die module installing base blocks 12 and 1B fan-shaped large-radius steel pipe bending die module installing base block 13 which are installed on the rotary connecting disc 9 by using bolts in a buckling way are of a mutual occlusion structure, and in an initial state, the adjacent 3A fan-shaped large-radius steel pipe bending die module mounting base blocks 12 which are arranged on the rotary connecting disc 9 and are close to the 1B fan-shaped large-radius steel pipe bending die module mounting base block 13 are sequentially buckled by bolts and are distributed on the workbench 2 in a right angle manner; the 6A fan-shaped large-radius steel pipe bending die modules 10 and the 1B fan-shaped large-radius steel pipe bending die modules 11 are sequentially buckled and installed on the vertical sections of the 4A fan-shaped large-radius steel pipe bending die module installation base blocks 12 and the 1B fan-shaped large-radius steel pipe bending die module installation base blocks 13 on the side with the larger radius by bolts, which are respectively convex head-shaped vertical surfaces, and the 6A fan-shaped large-radius steel pipe bending die modules 10 and the 1B fan-shaped large-radius steel pipe bending die modules 11 on the convex head-shaped vertical surfaces are respectively in a mutual meshing structure;

From the above description, those skilled in the art can make various changes and modifications without departing from the technical spirit of the present invention, and the present invention is within the protection scope of the present invention. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.

Claims

1. The utility model provides an equipment of preparation standard large radius steel pipe return bend product, includes preceding, the horizontal bar frame that sets up in back and installs workstation, characterized by in the bar frame: the middle upper part of the vertical surface of the left front side of the strip-shaped frame is provided with an 1/4-2/5 concave hollow circular truncated cone, two sides of a main shaft are respectively vertically arranged at the central position of the hollow circular truncated cone by using a bearing with a seat, and the main shaft vertically arranged at the central position of the hollow circular truncated cone by using the bearing with the seat is respectively provided with a part extending out of the upper top surface and the lower bottom surface of the hollow circular truncated cone; the upper top plate and the lower bottom plate of the strip-shaped hollow box body are respectively provided with a circular lug plate extending out of the left vertical surface of the strip-shaped hollow box body, the left vertical surface of the strip-shaped hollow box body is an inward concave circular arc surface matched with the circular outer surface of the hollow circular table, the middle part of the circular lug plate of the upper top plate of the strip-shaped hollow box body is provided with an upward circular table bulge, the middle part of the circular lug plate of the lower bottom plate of the strip-shaped hollow box body is provided with a downward circular table bulge, the circular lug plate of the middle part of the circular lug plate of the upper top plate of the strip-shaped hollow box body is provided with a through hole matched with the main shaft, the circular lug plate of the upper top plate and the circular lug plate of the lower bottom plate of the strip-shaped hollow box body respectively extends into the hollow circular table and is fixedly arranged on the part of the main shaft, the strip-shaped hollow box body which is arranged on the main shaft by using a through hole and a key which are respectively arranged on the circular lug plate arranged on the upper top plate and the circular lug plate arranged on the lower bottom plate and the circular truncated cone protruding part arranged on the middle part of the circular lug plate is capable of doing circular motion under the power of the main shaft, the left and right longitudinal length of the strip-shaped hollow box body which extends into the hollow truncated cone and is arranged on the part of the main shaft extending out of the upper top surface and the lower bottom surface of the hollow truncated cone is consistent with the left and right transverse length of the workbench, and the main shaft is also; the large-radius steel pipe bending device comprises a main shaft driving device, a large-radius steel pipe bending main clamping die device, a large-radius steel pipe bending auxiliary clamping die device, a large-radius steel pipe supporting and guiding device, and further comprises a hydraulic and electric control device;