CN210649551U

CN210649551U - Fixing and clamping device for four-way elbow

Info

Publication number: CN210649551U
Application number: CN201921057843.XU
Authority: CN
Inventors: 王海巧; 宋泽朝; 康小宾; 程智; 王海涛; 宋泽宇; 宁希高; 李英明; 张志阳; 高西平
Original assignee: Shanghai Manzhen New Material Technology Co Ltd
Current assignee: Shanghai Manzhen New Material Technology Co Ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-06-02
Anticipated expiration: 2029-07-09

Abstract

The utility model belongs to the technical field of the fixed clamping of a four-way elbow, and discloses a fixed clamping device of the four-way elbow, wherein a fixed disc is circular, and an elbow placing cavity is fixedly arranged at the bottom position of the front side of the fixed disc; the pressing devices are fixedly arranged at the left side and the right side of the elbow placing cavity and transversely arranged at the upper part of the elbow placing cavity; the jacking device is fixedly arranged at the upper part of the rear side of the elbow placing cavity, and the elbow is placed in the elbow placing cavity. The fixing and clamping device for the four-way elbow improves the clamping and fixing of the four-way elbow, improves the cutting and machining precision of the roundness of the inner wall of the four-way elbow and improves the product quality of the four-way elbow.

Description

Fixing and clamping device for four-way elbow

Technical Field

The utility model belongs to the technical field of the fixed clamp of cross bend, concretely relates to cross bend's fixed clamp device.

Background

The elbow is a connecting piece for changing the direction of the petroleum pipeline in the laying process of the petroleum pipeline. The elbow is divided into elbows with various bending angles such as a right-angle elbow, a 45-degree elbow and the like according to the bending angle. The elbow can be divided into a two-way elbow, a three-way elbow, a four-way elbow and the like according to the number of connected interfaces; the elbows play an important role in the laying of the petroleum pipelines.

In the processing process of the elbow, not only is the slope angle of the pipe orifice processed, but also the inner wall of the elbow is ensured to keep better roundness, and the smoothness of conveying petroleum media after the petroleum pipeline is welded is improved; therefore, the manufacturing and processing technology of the elbow is very strict. Particularly, in the process of roundness checking and cutting machining of the inner wall of the elbow, the elbow can be well fixed, and the roundness checking and cutting precision of the inner wall of the elbow can be effectively improved, so that the elbow is firmly fixed and clamped, and the method is particularly important for improving the roundness checking and cutting precision of the inner wall of the elbow. In the prior art, the two-way elbow needs fewer fixed points, and the two-way elbow is easy to clamp and fix, but for the three-way elbow and the four-way elbow, because more points needing to be fixed and clamped are needed, the three-way elbow and the four-way elbow are technically difficult to clamp and fix; the inventor develops a fixed clamping device of four-way elbow based on the defects in the prior art, and can solve the problems existing in the prior art well.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a fixing and clamping device of a four-way elbow, which has simple structural design and convenient use and realizes the clamping and fixing of the four-way elbow; the utility model discloses can solve among the prior art four-way bend because the point that needs to fix is more, hardly realize its fixed clamp tight problem, this kind of four-way bend's fixed clamp device as long as be applied to in the elbow inner wall circularity miller.

The utility model adopts the technical proposal that: a fixing and clamping device for a four-way elbow comprises a fixed disc, an elbow placing cavity and a pressing device; the fixed disc is circular, and the elbow placing cavity is fixedly arranged at the bottom of the front side of the fixed disc; the pressing devices are fixedly arranged at the left side and the right side of the elbow placing cavity and transversely arranged at the upper part of the elbow placing cavity; the pressing device comprises a cross beam, the cross beam is a cuboid, six mounting holes are fixedly formed in the upper portion of the cross beam, the mounting holes are through holes which penetrate through the cross beam from top to bottom, and threads are arranged inside the mounting holes; the pressing head is a cuboid, the bottom of the pressing head is provided with an arc-shaped pressing part, two pressing bolts are fixedly arranged, the pressing bolts respectively penetrate through a left mounting hole and a right mounting hole which are positioned on the rear side of the cross beam and extend to the bottom of the cross beam, and the pressing head is fixedly arranged at the bottom of the pressing bolts; two limiting bolts are fixedly arranged, the limiting bolts respectively penetrate through the two mounting holes in the front side of the compression bolt from bottom to top, and the nut ends of the limiting bolts are in contact with the pressure head; the left and right ends of the cross beam are respectively provided with two support connecting bolts, the two support connecting bolts respectively penetrate through mounting holes at the left and right ends of the cross beam and are fixedly connected through nuts, the lower part of each support connecting bolt is fixedly provided with a connecting block, and the movable bearing is fixedly arranged inside the connecting block and is respectively and fixedly connected with the two sides of the elbow placing cavity through a fixing shaft; the jacking device is fixedly arranged at the upper part of the rear side of the elbow placing cavity and comprises two supporting blocks, the two supporting blocks are fixedly arranged in an L shape, the supporting blocks are fixedly connected with the front side surface of the fixed disc through fixing bolts, and the bearing is fixedly arranged at the center position of the side surface of each supporting block; the supporting cylinders are hollow, the supporting cylinders are fixedly connected with the front side face of the fixed disc through fixing bolts, one supporting cylinder is fixedly arranged at the left side position of the left supporting block, the other supporting cylinder is fixedly arranged at the right side position of the right supporting block, and the side parts of the supporting cylinders are provided with circular through holes; one end of the tightening rod is fixedly provided with a circular connecting part, and the other end of the supporting cylinder is fixedly provided with a tightening part; the jacking rod is arranged inside the supporting cylinder, one end of the round connecting part of the jacking rod corresponds to the round through hole of the supporting cylinder, and the other end of the jacking rod penetrates through the outer wall of the front end of the supporting cylinder and is sleeved on the jacking rod through a fixing gasket and a nut to be fixedly connected; the connecting shaft supporting block is fixedly arranged at the rear side position of the elbow placing cavity, the left end position of the connecting shaft is fixedly provided with an adjusting handle, the right end of the connecting shaft is fixedly provided with threads, the connecting shaft penetrates through a circular through hole to penetrate through a left circular connecting part, a right circular connecting part and inner rings of bearings of the left supporting block and the right supporting block, the center part of the end cover is provided with an adjusting hole, the inside of the adjusting hole is fixedly provided with adjusting threads, the right end of the connecting shaft penetrates through the adjusting hole of the end cover to be fixed at the front side of the circular; the elbow is placed in the elbow placing cavity.

The elbow placing cavity comprises a bottom plate, the rear end of the bottom plate is fixedly connected with the bottom of the fixed disc, the left side plate is fixedly arranged at the left side position of the bottom plate, the right side plate is fixedly arranged at the right side position of the bottom plate, and the bottom plate, the left side plate and the right side plate are fixedly connected with the fixed disc into a whole; the leveling base plate is fixedly arranged at the upper part of the bottom plate through bolts.

The mounting holes are fixedly arranged at the middle positions of the left end and the right end of the cross beam and are linearly and symmetrically arranged, and the other four mounting holes are fixedly arranged at the middle positions of the cross beam in a group of two.

The left connecting block and the right connecting block penetrate through the inner ring of the movable bearing through the fixed shaft and are fixedly connected with the left side plate and the right side plate of the elbow placing cavity.

And a through body connecting hole is fixedly formed in the center of the circular connecting part.

The tight portion in top is circular, is provided with a layer of rubber layer on the outside contact surface of tight portion in top fixedly.

The connecting shaft supporting block is fixedly arranged on the outer wall of the left side plate of the elbow placing cavity through bolts, the connecting shaft supporting block is closely attached to the left side plate and arranged in parallel, and the connecting shaft penetrates through the center of the connecting shaft supporting block.

The use process of the fixing and clamping device of the four-way elbow comprises the following steps: when the four-way elbow needs to be clamped and fastened by the fixing and clamping device, firstly, an operator pushes a cross beam of the pressing device, the cross beam pushes the pressing device to the position of a bottom plate of an elbow placing cavity by using the linkage rotation action of a fixing shaft and a movable bearing through a supporting and connecting bolt and a connecting block, the four-way elbow is placed in the elbow placing cavity, and when the four-way elbow is placed and has the unstable problem, the stability of the four-way elbow can be adjusted through a leveling base plate until the four-way elbow is stably adjusted; meanwhile, the rear side part of the four-way elbow is tightly attached to the left and right jacking parts of the jacking device, the compression degree of the arc compression part of the pressure head at the lower part of the compression bolt in contact with the left and right openings of the elbow can be adjusted by screwing or unscrewing the compression bolt, and the arc compression part is just in contact with the arc surfaces of the left and right openings of the elbow; meanwhile, the limiting bolt is screwed or unscrewed, so that the lower nut end of the limiting bolt presses the arc pressing part, and the arc pressing part and the surfaces of the left and right openings of the elbow are pressed and contacted to be uniformly stressed. After the left and right jacking parts of the jacking device are tightly contacted with the surface of the rear side through opening of the four-way elbow, the distance between the left and right jacking rods in the left and right supporting cylinders can be increased or decreased under the matching action of the threads at the right end of the connecting shaft and the adjusting threads in the adjusting hole of the end cover by screwing or unscrewing the adjusting handle at the left end of the connecting shaft; thereby adjusting the jacking degree of the left and right jacking parts of the jacking device and the four-way elbow. The process is the using process of the fixing and clamping device of the four-way elbow.

The pressing head is a cuboid, an arc-shaped pressing part is arranged at the bottom of the pressing head, two pressing bolts are fixedly arranged, the pressing bolts respectively penetrate through a left mounting hole and a right mounting hole which are positioned at the rear side of the cross beam and extend to the bottom of the cross beam, and the pressing head is fixedly arranged at the bottom of the pressing bolts; wherein the bottom of pressure head is provided with the arc and compresses tightly the portion and set up like this and mainly improve the laminating compactness of opening surface about pressure head and four-way bend to make the arc compress tightly portion and four-way bend about opening surface atress even, thereby improved the arc of pressure head and compressed tightly the fastness that the portion compressed tightly fixed four-way bend. The pressing bolts respectively penetrate through the left and right mounting holes in the rear side of the cross beam and extend to the bottom of the cross beam, and the pressing head is fixedly arranged at the bottom of the pressing bolts; the height of the pressing bolt is screwed or unscrewed, so that the upper and lower heights of the pressing head and the arc pressing part are adjusted, and the arc pressing part of the pressing head is pressed and contacted with the four-way elbow more tightly.

Two limiting bolts are fixedly arranged, the limiting bolts respectively penetrate through two mounting holes in the front side of the compression bolt from bottom to top, and the nut ends of the limiting bolts are in contact with the pressure head; the main purpose of the arrangement is to realize the adjustment of the vertical height of the limiting bolt by screwing or unscrewing the limiting bolt, and the pressing contact of the nut at the bottom of the limiting bolt and the pressing head is utilized, so that on one hand, the uniformity of the stress of the arc-shaped pressing part of the pressing head and the surface of the four-way elbow is improved, and the degree of the pressing of the arc-shaped pressing part of the pressing head and the surface of the four-way elbow is improved; on the other hand, the limit bolt is fixedly pressed with the pressure head, so that the pressure head is limited not to be biased, and the position of the pressure head is limited.

The left and right ends of the cross beam are respectively provided with two support connecting bolts, the two support connecting bolts respectively penetrate through mounting holes at the left and right ends of the cross beam and are fixedly connected through nuts, the lower part of each support connecting bolt is fixedly provided with a connecting block, and the movable bearing is fixedly arranged inside the connecting block and is respectively and fixedly connected with the two sides of the elbow placing cavity through a fixing shaft; the main purpose of setting up like this has realized the swing around the crossbeam for the setting of supporting connecting bolt, connecting block, loose bearing and fixed axle to for making things convenient for placing of four-way bend place the chamber in the elbow and provide convenience.

The supporting blocks are fixedly provided with two L-shaped supporting blocks, the supporting blocks are fixedly connected with the front side face of the fixed disc through fixing bolts, and the bearings are fixedly arranged at the center positions of the side faces of the supporting blocks; the main purpose of this arrangement is to provide a stable supporting action for the connecting shaft by the arrangement of the support blocks.

The jacking part is circular, and a rubber layer is fixedly arranged on the outer side contact surface of the jacking part; the main purpose of setting up like this is through the setting on the one hand of rubber layer prevent to push up tight portion and the straight tight contact scratch four-way bend surface of four-way bend in top, and on the other hand utilizes the flexible characteristic of rubber layer to improve the homogeneity of the contact atress of amount top tight portion and four-way bend surface.

The utility model has the advantages that: the technical scheme provides a fixing and clamping device for a four-way elbow, which has simple structural design and convenient use and realizes the clamping and fixing of the four-way elbow; the utility model discloses can solve among the prior art four-way bend because the fixed point that needs is more, hardly realize its fixed clamp tight problem, improve the tight fixedly of clamp to four-way bend, improve the cross bend inner wall circularity cutting process precision, improve four-way bend's product quality.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the pressing device of the present invention;

FIG. 3 is a schematic structural view of the tightening device of the present invention;

fig. 4 is a schematic structural view of the right side of the jacking device of the utility model;

FIG. 5 is a schematic structural view of the tightening rod of the present invention;

fig. 6 is a front view of the connecting shaft of the present invention;

the labels in the figure are: 1. The fixed plate, 2, an elbow placing cavity, 201, a bottom plate, 202, a left side plate, 203, a right side plate, 204, a leveling base plate, 3, a pressing device, 301, a cross beam, 302, a mounting hole, 303, a pressing head, 304, an arc pressing part, 305, a pressing bolt, 306, a limiting bolt, 307, a supporting connecting bolt, 308, a connecting block, 309, a fixed shaft, 310, a movable bearing, 4, a jacking device, 401, a supporting block, 402, a bearing, 403, a supporting cylinder, 404, a circular through hole, 405, a jacking rod, 406, a circular connecting part, 407, a fixed gasket, 408, a nut, 409, a jacking part, 410, a rubber layer, 411, a connecting shaft, 412, a thread, 413, a connecting shaft, a supporting block, 414, an adjusting handle, 415, an end cover, 416, an adjusting hole, 417, an adjusting thread, 5 and an elbow.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in the figure, the fixing and clamping device for the four-way elbow comprises a fixing disc 1, an elbow placing cavity 2 and a pressing device 3; the fixed disc 1 is circular, and the elbow placing cavity 2 is fixedly arranged at the bottom of the front side of the fixed disc 1; the pressing devices 3 are fixedly arranged at the left side and the right side of the elbow placing cavity 2, and the pressing devices 3 are transversely arranged at the upper part of the elbow placing cavity 2; the pressing device 3 comprises a cross beam 301, the cross beam 301 is a cuboid, six mounting holes 302 are fixedly arranged at the upper part of the cross beam 301, the mounting holes 302 are through holes which vertically penetrate through the cross beam 301, and threads are arranged inside the mounting holes 302; the pressure head 303 is a cuboid, an arc-shaped pressing part 304 is arranged at the bottom of the pressure head 303, two pressing bolts 305 are fixedly arranged, the pressing bolts 305 respectively penetrate through a left mounting hole 302 and a right mounting hole 302 which are positioned at the rear side of the cross beam 301 and extend to the bottom of the cross beam 301, and the pressure head 303 is fixedly arranged at the bottom of the pressing bolts 305; two limiting bolts 306 are fixedly arranged, the limiting bolts 306 respectively penetrate through the two mounting holes 302 in the front side of the pressing bolt 305 from bottom to top, and the nut ends of the limiting bolts 306 are in contact with the pressure head; two support connecting bolts 307 are arranged on the left and right sides, the support connecting bolts 307 respectively penetrate through the mounting holes 302 at the left and right ends of the cross beam 301 and are fixedly connected through nuts, the lower part of each support connecting bolt 307 is fixedly provided with a connecting block 308, and a movable bearing 310 is fixedly arranged inside the connecting block 308 and is respectively fixedly connected with the two sides of the elbow placing cavity 2 through a fixing shaft 309; the jacking device 4 is fixedly arranged at the upper part of the rear side of the elbow placing cavity 2, the jacking device 4 comprises two supporting blocks 401, the two supporting blocks 401 are fixedly arranged in an L shape, the supporting blocks 401 are fixedly connected with the front side surface of the fixed plate 1 through fixing bolts, and the bearing 402 is fixedly arranged at the center position of the side surface of the supporting blocks 401; the supporting cylinders 403 are hollow, the supporting cylinders 403 are fixedly connected with the front side surface of the fixed disk 1 through fixing bolts, one supporting cylinder 403 is fixedly arranged at the left side position of the left supporting block 401, the other supporting cylinder 403 is fixedly arranged at the right side position of the right supporting block 401, and the side parts of the supporting cylinders 403 are provided with circular through holes 404; one end of the tightening rod 405 is fixedly provided with a circular connecting part 406, and the other end of the support cylinder 403 is fixedly provided with a tightening part 409; the tightening rod 405 is arranged inside the support cylinder 403, one end of a circular connecting part 406 of the tightening rod 405 corresponds to the circular through hole 404 of the support cylinder 403, and the other end of the tightening rod 405 penetrates through the outer wall of the front end of the support cylinder 403 and is sleeved on the tightening rod 405 through a fixed gasket 407 and a nut 408 to be fixedly connected; a connecting shaft supporting block 413 is fixedly arranged at the rear side part of the elbow placing cavity 2, an adjusting handle 414 is fixedly arranged at the left end position of the connecting shaft 411, a thread 412 is fixedly arranged at the right end of the connecting shaft 411, the connecting shaft 411 passes through a circular through hole 404 and passes through left and right circular connecting parts 406 and inner rings of bearings 402 of the left and right supporting blocks 401, an adjusting hole 416 is arranged at the central part of an end cover 415, an adjusting thread 417 is fixedly arranged inside the adjusting hole 416, the right end of the connecting shaft 411 passes through the end cover 415 and is fixed in the adjusting hole 416 at the front side of the right circular connecting part 406, and the end cover 415 and the; the elbow 5 is placed in the elbow placing chamber 2.

The elbow placing cavity 2 comprises a bottom plate 201, the rear end of the bottom plate 201 is fixedly connected with the bottom of the fixed disc 1, a left side plate 202 is fixedly arranged at the left side position of the bottom plate 201, a right side plate 203 is fixedly arranged at the right side position of the bottom plate 201, and the bottom plate 201, the left side plate 202 and the right side plate 203 are fixedly connected with the fixed disc 1 into a whole; the leveling shim plate 204 is fixedly arranged at the upper position of the bottom plate 201 through bolts.

Two mounting holes 302 are fixedly arranged at the middle positions of the left end and the right end of the cross beam 301 and are linearly and symmetrically arranged, and the other four mounting holes 302 are fixedly arranged at the middle positions of the cross beam 301 in a group of two.

The left and right connecting blocks 308 are fixedly connected with the left side plate 202 and the right side plate 203 of the elbow placing chamber 2 through the inner ring of the movable bearing 310 by the fixed shaft 309.

The center of the circular connecting part 406 is fixedly provided with a through body connecting hole.

The tight portion 409 that pushes up is circular, and the outside contact surface of the tight portion 409 that pushes up is fixed with a layer of rubber layer 410.

The connecting shaft supporting block 413 is fixedly arranged on the outer wall of the left side plate 202 of the elbow placing cavity 2 through a bolt, the connecting shaft supporting block 413 is tightly attached to the left side plate 202 in parallel, and the connecting shaft 411 penetrates through the center of the connecting shaft supporting block 413.

The use process of the fixing and clamping device of the four-way elbow comprises the following steps: when the four-way elbow 5 needs to be clamped and fastened by the fixing and clamping device, firstly, an operator pushes the cross beam 301 of the pressing device 3, the cross beam 301 pushes the pressing device 3 to the position of the bottom plate 201 of the elbow placing cavity 2 through the supporting and connecting bolt 307 and the connecting block 308 by using the linkage rotation action of the fixing shaft 309 and the movable bearing 310, at the moment, the four-way elbow 5 is placed in the elbow placing cavity 2, and when the four-way elbow 5 is placed unstably, the stability of the four-way elbow 5 can be adjusted by the leveling base plate 204 until the four-way elbow 5 is stably adjusted; meanwhile, the rear side part of the four-way elbow 5 is tightly attached to the left and right jacking parts 409 of the jacking device 4, at the moment, the compression degree of the arc-shaped compression part 304 of the pressure head 303 at the lower part of the compression bolt 305 in contact with the left and right elbow openings can be adjusted by screwing or unscrewing the compression bolt 305, and the arc-shaped compression part 304 is just in contact with the arc-shaped surfaces of the left and right elbow openings; meanwhile, the limiting bolt 306 is screwed or unscrewed, so that the lower nut end of the limiting bolt 306 compresses the arc compressing part 304, and the arc compressing part 304 is in compression contact with the surfaces of the left and right openings of the elbow to be uniformly stressed. After the left and right tightening parts 409 of the tightening device 4 are tightly contacted with the surface of the rear side through hole of the four-way elbow, the distance between the left and right tightening rods 405 in the left and right supporting cylinders 403 can be increased or decreased under the matching action of the threads 412 at the right end of the connecting shaft 411 and the adjusting threads 417 in the adjusting hole 416 of the end cover 415 by screwing or unscrewing the adjusting handle 414 at the left end of the connecting shaft 411; thereby adjusting the tightening degree of the left and right tightening parts 409 of the tightening device 4 and the four-way elbow. The process is the using process of the fixing and clamping device of the four-way elbow.

Claims

1. A fixing and clamping device for a four-way elbow comprises a fixed disc, an elbow placing cavity and a pressing device; the fixed disc is circular, and the elbow placing cavity is fixedly arranged at the bottom of the front side of the fixed disc; the method is characterized in that: the pressing devices are fixedly arranged at the left side and the right side of the elbow placing cavity and transversely arranged at the upper part of the elbow placing cavity; the pressing device comprises a cross beam, the cross beam is a cuboid, six mounting holes are fixedly formed in the upper portion of the cross beam, the mounting holes are through holes which penetrate through the cross beam from top to bottom, and threads are arranged inside the mounting holes; the pressing head is a cuboid, the bottom of the pressing head is provided with an arc-shaped pressing part, two pressing bolts are fixedly arranged, the pressing bolts respectively penetrate through a left mounting hole and a right mounting hole which are positioned on the rear side of the cross beam and extend to the bottom of the cross beam, and the pressing head is fixedly arranged at the bottom of the pressing bolts; two limiting bolts are fixedly arranged, the limiting bolts respectively penetrate through the two mounting holes in the front side of the compression bolt from bottom to top, and the nut ends of the limiting bolts are in contact with the pressure head; the left and right ends of the cross beam are respectively provided with two support connecting bolts, the two support connecting bolts respectively penetrate through mounting holes at the left and right ends of the cross beam and are fixedly connected through nuts, the lower part of each support connecting bolt is fixedly provided with a connecting block, and the movable bearing is fixedly arranged inside the connecting block and is respectively and fixedly connected with the two sides of the elbow placing cavity through a fixing shaft; the jacking device is fixedly arranged at the upper part of the rear side of the elbow placing cavity and comprises two supporting blocks, the two supporting blocks are fixedly arranged in an L shape, the supporting blocks are fixedly connected with the front side surface of the fixed disc through fixing bolts, and the bearing is fixedly arranged at the center position of the side surface of each supporting block; the supporting cylinders are hollow, the supporting cylinders are fixedly connected with the front side face of the fixed disc through fixing bolts, one supporting cylinder is fixedly arranged at the left side position of the left supporting block, the other supporting cylinder is fixedly arranged at the right side position of the right supporting block, and the side parts of the supporting cylinders are provided with circular through holes; one end of the tightening rod is fixedly provided with a circular connecting part, and the other end of the supporting cylinder is fixedly provided with a tightening part; the jacking rod is arranged inside the supporting cylinder, one end of the round connecting part of the jacking rod corresponds to the round through hole of the supporting cylinder, and the other end of the jacking rod penetrates through the outer wall of the front end of the supporting cylinder and is sleeved on the jacking rod through a fixing gasket and a nut to be fixedly connected; the connecting shaft supporting block is fixedly arranged at the rear side position of the elbow placing cavity, the left end position of the connecting shaft is fixedly provided with an adjusting handle, the right end of the connecting shaft is fixedly provided with threads, the connecting shaft penetrates through a circular through hole to penetrate through a left circular connecting part, a right circular connecting part and inner rings of bearings of the left supporting block and the right supporting block, the center part of the end cover is provided with an adjusting hole, the inside of the adjusting hole is fixedly provided with adjusting threads, the right end of the connecting shaft penetrates through the adjusting hole of the end cover to be fixed at the front side of the circular; the elbow is placed in the elbow placing cavity.

2. The fixing and clamping device of the four-way elbow according to claim 1, characterized in that: the elbow placing cavity comprises a bottom plate, the rear end of the bottom plate is fixedly connected with the bottom of the fixed disc, the left side plate is fixedly arranged at the left side position of the bottom plate, the right side plate is fixedly arranged at the right side position of the bottom plate, and the bottom plate, the left side plate and the right side plate are fixedly connected with the fixed disc into a whole; the leveling base plate is fixedly arranged at the upper part of the bottom plate through bolts.

3. The fixing and clamping device of the four-way elbow according to claim 1, characterized in that: two mounting holes are fixedly arranged in the middle of the left end and the right end of the cross beam and are linearly and symmetrically arranged, and a group of two mounting holes are fixedly arranged in the middle of the cross beam.

4. The fixing and clamping device of the four-way elbow according to claim 1, characterized in that: the left connecting block and the right connecting block penetrate through the inner ring of the movable bearing through the fixed shaft and are fixedly connected with the left side plate and the right side plate of the elbow placing cavity.

5. The fixing and clamping device of the four-way elbow according to claim 1, characterized in that: the center position of the circular connecting part is fixedly provided with a through body connecting hole.

6. The fixing and clamping device of the four-way elbow according to claim 1, characterized in that: the tight portion in top is circular, is provided with a layer of rubber layer on the outside contact surface of tight portion in top fixedly.

7. The fixing and clamping device of the four-way elbow according to claim 1, characterized in that: the connecting shaft supporting block is fixedly arranged on the outer wall of the left side plate of the elbow placing cavity through a bolt, the connecting shaft supporting block is closely attached to the left side plate and arranged in parallel, and the connecting shaft penetrates through the center of the connecting shaft supporting block.