CN111185775A

CN111185775A - Multifunctional rotary worktable for assembly type steel structure building site and use method thereof

Info

Publication number: CN111185775A
Application number: CN202010126109.5A
Authority: CN
Inventors: 张晓曦; 蒋国平; 肖三霞; 林尊浩; 雷鎏
Original assignee: Fujian Yongfu Construction Group Co ltd
Current assignee: Fujian Yongfu Construction Group Co ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-05-22
Anticipated expiration: 2040-02-28
Also published as: CN111185775B

Abstract

The invention discloses a multifunctional rotary worktable for an assembly type steel structure building site, which comprises a bottom plate, a box body fixedly arranged on the upper end surface of the bottom plate, a rotary table and a clamping device arranged on the rotary table, wherein a rotating shaft is vertically arranged in the box body, and the upper end of the rotating shaft penetrates through the top of the box body and is fixedly connected with the lower end surface of the rotary table. Relates to the technical field of rotary working tables. This assembled steel construction building site uses multi-functional swivel work head and application method thereof has fine intermittent type rotation function, has compensatied the rotatory not enough of current workstation, and the staff can carry out rotation regulation according to the needs of self, and it is very convenient with intermittent type formula rotation regulation in succession rotatory, has full the work of different grade type, great improvement swivel work head's practicality.

Description

Multifunctional rotary worktable for assembly type steel structure building site and use method thereof

Technical Field

The invention relates to the technical field of rotary workbenches, in particular to a multifunctional rotary workbench for an assembly type steel structure building site and a using method thereof.

Background

The assembly type building becomes the development direction of the building industry at present, and the assembly type steel structure building relates to the processing and the assembly of a large number of steel structures. The steel structure is complex to machine, heavy in machinery, high in labor intensity of workers and hard in construction site conditions, and how to design a reasonable assembling workbench is a task which needs to be solved urgently. The rotary worktable is an auxiliary machine of machine tools such as a floor type boring machine, a boring and milling machine, an end face boring machine and the like, and the worktable on a construction site needs to move frequently, so that the overall layout of the rotary worktable is a compact whole, the worktable is manufactured by adopting a high-quality cold rolled plate through finish machining, a firm worktable frame is firm and stable, and the worktable can bear 1000kg of load; various working desktop choices can be matched with different use requirements; the tool hanging cabinet, the side cabinet lamp bracket and the adjusting foot cup have attractive appearance; the laminated plates and the drawers have superior quality and heavy bearing capacity, and the drawers can be arbitrarily separated according to requirements; the working table is suitable for various application occasions such as molds, benches, detection, maintenance, assembly and the like, and has good corrosion resistance, dirt resistance, impact resistance and bearing capacity.

However, the existing rotary workbench has a great number of defects, such as single function and incapability of well assisting the work. The existing rotary working tables are generally divided into a direct rotary working table and an intermittent rotary working table, but the two rotary working tables are generally embodied by two working tables and cannot be combined into one; all processes cannot be completed on one workbench, and assembly needs to be performed on different workbenches, so that the working efficiency of workers is reduced. And the regulation between current direct rotation and the intermittent type formula is rotatory very troublesome, and stable relatively poor, causes the confusion between the internal connection spare easily, finally leads to the damage of equipment, great reduction swivel work head's practicality. There is not yet a swivel work head suitable for use in assembly steel construction sites.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a multifunctional rotary worktable for an assembly type steel structure building site and a using method thereof, which solve the problems that the existing rotary worktable has single function and cannot meet the requirements of complex and changeable assembly type steel structure building sites; and the operation of the adjustment switching between the direct rotation and the intermittent rotation is very troublesome and poor in stability, so that disorder between the internal connecting pieces is easily caused, and finally equipment is damaged.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a multifunctional rotary worktable for an assembly type steel structure building site comprises a bottom plate, a box body fixedly arranged on the upper end surface of the bottom plate, a rotary table fixed above the box body and capable of rotating, and a clamping device arranged on the rotary table, wherein a rotating shaft is vertically arranged in the box body, and the upper end of the rotating shaft penetrates through the top of the box body and is fixedly connected with the lower end surface of the rotary table; the upper end and the lower end of the ejector rod are respectively and rotatably connected to the top and the bottom of the inner wall of the box body through bearings; a worm wheel is horizontally and fixedly connected to the outer surface of the lower end of the ejector rod; one side of the bottom of the box body is fixedly connected with a first motor, and an output shaft of the first motor is fixedly connected with a worm meshed with a worm wheel; an intermittent motion structure is horizontally arranged on the ejector rod, and the intermittent motion structure enables the rotating speed of the rotating shaft to be slower than that of the ejector rod; the outer surface of the circumference of the rotating shaft is fixedly connected with a first bevel gear which is horizontally arranged, the bottom of the inner wall of the box body is provided with a second motor in a sliding mode, and the outer surface of an output shaft of the second motor is fixedly connected with a second bevel gear matched with the first bevel gear.

Preferably, the intermittent motion structure comprises a circular rotating plate horizontally arranged on the ejector rod, the upper end surface of the rotating plate is coaxially and fixedly connected with a notched disc with the diameter smaller than that of the rotating plate, and a first fan-shaped groove and a second fan-shaped groove are symmetrically arranged on the notched disc from left to right; a vertically arranged cylindrical pin is fixed in the area of the upper end surface of the rotating plate, which is positioned outside the first fan-shaped groove; a grooved pulley is horizontally and fixedly arranged on the rotating shaft, four sliding grooves matched with the notched disc are formed in the outer surface of the grooved pulley, and a moving groove matched with the cylindrical pin for use is formed between every two adjacent grooved pulleys.

Preferably, a moving block capable of sliding left and right is further arranged in the box body; the upper end of the motion block is connected in the box body in a sliding way through a supporting rod; the left side of the motion block is fixedly connected with a U-shaped block used for clamping the cylindrical pin, and the right side of the motion block is fixedly connected with a clamping block; the one end of fixture block runs through the box and extends to the outside of box, the draw-in groove has been seted up at the top of fixture block, the bottom fixedly connected with chucking spring of draw-in groove inner wall, the top fixedly connected with stopper of chucking spring, the top of stopper runs through the fixture block and extends to the top of fixture block.

Preferably, a motor base is arranged at the bottom of the inner wall of the box body in a sliding manner; the second motor is fixedly arranged on the motor base.

Preferably, a clamping block is horizontally and fixedly connected to one side of the motor base, which is far away from the second bevel gear, one end of the clamping block penetrates through the box body and extends to the outside of the box body, and a plurality of clamping grooves are formed in the clamping block; the outer surface of the clamping block between the inner wall of the box body and the motor base is sleeved with an extrusion spring.

Preferably, an L-shaped plate is fixedly connected to the outer surface of the box body and above the clamping block, a T-shaped block capable of sliding up and down is connected to the L-shaped plate, and the T-shaped block is matched with the clamping groove; the top of the T-shaped block is fixedly connected with an operating rod.

Preferably, the clamping device comprises baffle plates which are vertically fixed on two sides of the upper end face of the rotary table and symmetrically arranged, a threaded block is fixedly connected onto one side face opposite to the baffle plate, a threaded rod is connected to the internal threads of the threaded block, one end of the threaded rod is rotatably connected with a clamping plate through a bearing, an anti-slip pad is fixedly connected onto one side face of the clamping plate, and the other end of the threaded rod penetrates through the baffle plate and extends to the other side of the baffle plate.

Preferably, the use method of the multifunctional rotary worktable for the assembly type steel structure construction site comprises the following steps:

when the intermittent rotation is performed:

firstly, placing an object to be processed on a turntable, and clamping the object through a clamping device;

secondly, starting a first motor, wherein the first motor sequentially drives a worm, a worm wheel and a mandril to rotate, the rotation of the mandril drives an intermittent motion structure to rotate, the intermittent motion structure drives a rotating shaft and a turntable to rotate intermittently, and articles on the turntable rotate intermittently;

when it is necessary to switch to the continuous rotation,

thirdly, the first motor is closed, the intermittent motion structure and the ejector rod stop running, the second motor is slid, the second bevel gear is meshed with the first bevel gear, the second motor is fixed, and the second motor is prevented from deviating;

and fourthly, starting a second motor, wherein the second motor drives a first bevel gear to rotate, the first bevel gear drives a second bevel gear to rotate through meshing, the second bevel gear drives a rotating shaft to rotate, and the rotating shaft rotates to drive the rotating disc and the object to rotate.

(III) advantageous effects

The invention has the following beneficial effects:

1. this assembled steel construction building site uses multi-functional rotatory workstation, through the box, the axis of rotation, the ejector pin, the intermittent motion structure, the worm wheel, the rotor plate, the sector groove, the nose bar, the plectane, the spout, the motion groove, the cooperation setting of first motor and worm, it is rotatory to have satisfied the intermittent type formula of carousel and article, fine intermittent type rotation function has, the not enough of current workstation rotation has been remedied, the staff can carry out the rotation regulation according to the needs of self, direct rotation and intermittent type formula rotation regulation are very convenient, the work of different grade type has been filled, great improvement swivel work head's practicality.

2. This assembled steel construction building site uses multi-functional rotatory workstation, through the cooperation setting of motion piece, U type piece, draw-in groove, chucking spring and stopper, can carry on spacingly to the rotor plate, also can be fine carry out the joint to the box to the stability after the motion of motion piece has been guaranteed.

3. This assembled steel construction building site uses multi-functional swivel work head, through first bevel gear, the motor cabinet, the second motor, second bevel gear, the chucking piece, the chucking groove, the extrusion spring, the L template, the cooperation setting of T type piece and action bars, stability after the chucking piece motion has been guaranteed, the meshing between each other of first bevel gear and second bevel gear has been improved indirectly, so that the second bevel gear better drives the rotation of first bevel gear and axis of rotation through the meshing, great improvement swivel work head's practicality.

4. This assembled steel construction building site uses multi-functional rotatory workstation, through the carousel, the baffle, the screw block, the threaded rod, the cooperation setting of clamp plate and slipmat, when the threaded rod is rotatory, through the threaded connection with the screw block, the production motion that can be fine, the motion of threaded rod, the drive clamp plate that can be fine moves, during the clamp plate motion, can be fine press from both sides the tight article, and through the setting of slipmat, great improvement the frictional force between article and the anchor clamps, thereby the stability that the article was pressed from both sides tightly has been improved.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

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

FIG. 2 is a schematic structural view of an intermittent motion structure of the present invention;

FIG. 3 is an enlarged view of a portion of the invention at A in FIG. 1;

fig. 4 is a partial enlarged view of the invention at B in fig. 1.

In the figure, 1, a bottom plate; 2. a box body; 3. a rotating shaft; 4. a top rod; 5. an intermittent motion structure; 501. a rotating plate; 502. a notched disc; 503. a first sector groove; 504. a second sector groove; 505. a cylindrical pin; 506. a grooved wheel; 507. a chute; 508. a motion groove; 6. a worm gear; 7. a first motor; 8. a worm; 9. a motion block; 10. a clamping block; 11. a card slot; 12. a chucking spring; 13. a limiting block; 14. a first bevel gear; 15. a motor base; 16. a second motor; 17. a second bevel gear; 18. a clamping block; 19. a clamping groove; 20. a compression spring; 21. an L-shaped plate; 22. a T-shaped block; 23. an operating lever; 24. a turntable; 25. a baffle plate; 26. a thread block; 27. a threaded rod; 28. a clamping plate; 29. a non-slip mat; 30. a U-shaped block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

Referring to fig. 1-4, a multifunctional rotary worktable for an assembly type steel structure building site comprises a base plate 1, a box body 2 is fixedly connected to the top of the base plate 1, an L-shaped plate 21 is fixedly connected to one side of the box body 2, a T-shaped block 22 matched with a clamping groove 19 is slidably connected to one side of the L-shaped plate 21, the L-shaped plate 21 is fixedly connected to the main purpose of clamping the clamping block 18 well, an operating rod 23 is fixedly connected to the top of the T-shaped block 22, a first spring is fixedly connected to the outer surface of the operating rod 23, the T-shaped block 22 can be well extruded mainly through the elastic force of the first spring, so that the T-shaped block 22 is driven to be extruded, and the T-shaped block 22 is guaranteed to be clamped with the clamping block 18; the top end of the operating rod 23 penetrates through the L-shaped plate 21 and extends to the top of the L-shaped plate 21, the bottom of the inner wall of the box body 2 is rotatably connected with a rotating shaft 3 through a supporting rod, the top end of the rotating shaft 3 penetrates through the box body 2 and extends to the top of the box body 2, one end of the rotating shaft 3 extending to the top of the box body 2 is fixedly connected with a turntable 24, two sides of the top of the turntable 24 are fixedly connected with baffle plates 25, one sides, opposite to the two baffle plates 25, of the two baffle plates 25 are fixedly connected with threaded blocks 26, the inner threads of the threaded blocks 26 are connected with threaded rods 27, when the threaded rods 27 rotate, through threaded connection with the threaded blocks 26, movement can be well generated, one end of the threaded rods 27 is rotatably connected with a clamping plate 28 through a bearing, one side of the clamping plate 28 is fixedly connected with, the friction force between the object and the clamp is greatly improved, and the other end of the threaded rod 27 penetrates through the baffle 25 and extends to the other side of the baffle 25; two sides of the bottom of the rotary table 24 are rotatably connected with the top of the box body 2; a first bevel gear 14 is fixedly connected to the outer surface of the rotating shaft 3 and the bottom of the grooved pulley 506, a motor base 15 is slidably connected to the bottom of the inner wall of the box body 2 and the other side of the rotating shaft 3, a second motor 16 is fixedly connected to the top of the motor base 15, and a second bevel gear 17 matched with the first bevel gear 14 is fixedly connected to the outer surface of an output shaft of the second motor 16, so that the first bevel gear 14 can be well driven to rotate when the first bevel gear 14 is meshed with the second bevel gear 17 and the second bevel gear 17 rotates; one side of the motor base 15 is fixedly connected with a rod-shaped clamping block 18, one end of the clamping block 18 penetrates through the box body 2 and extends to the outside of the box body 2, the top of one end of the clamping block 18 extending to the outside of the box body 2 is provided with two clamping grooves 19, the distance between the two clamping grooves 19 is equal to the distance between the first bevel gear 14 and the second bevel gear 17, an extrusion spring 20 is fixedly sleeved on the outer surface of the clamping block 18 positioned in the box body 2, and the motor base 15 can be well extruded through the elastic force of the extrusion spring 20, so that the motor base 15 is driven to move; an ejector rod 4 is rotatably connected to the bottom of the inner wall of the box body 2 and located on one side of the rotating shaft 3 through a bearing, the top end of the ejector rod 4 is rotatably connected to the top of the inner wall of the box body 2 through a bearing, an intermittent motion structure 5 and a worm wheel 6 are fixedly connected to the outer surface of the ejector rod 4 from top to bottom in sequence, the intermittent motion structure 5 comprises a rotating plate 501, and a notched disc 502 with a smaller diameter is fixedly connected to the top of the rotating plate 501; a first fan-shaped groove 503 and a second fan-shaped groove 504 which are symmetrical are respectively arranged on two sides of the notched disc 502, a cylindrical pin 505 is welded on the top of the rotating plate 501 and positioned outside the first fan-shaped groove 503, and the cylindrical pin 505 is positioned on the symmetrical axis of the first fan-shaped groove 503; the outer surface of the rotating shaft 3 is fixedly connected with a grooved pulley 506, the outer surface of the grooved pulley 506 is provided with a sliding groove 507 used in cooperation with the notched disc 502, the outer surface of the grooved pulley 506 and one side of the sliding groove 507 are provided with a moving groove 508 used in cooperation with the cylindrical pin 505, and the moving groove 508 used in cooperation with the cylindrical pin 505 is formed in the outer surface of the grooved pulley 506; one side of the bottom of the box body 2 is fixedly connected with a first motor 7, an output shaft of the first motor 7 is fixedly connected with a worm 8 meshed with a worm wheel 6, mainly when the worm 8 rotates, the worm wheel 6 can be driven to rotate through meshing at the same time, the top of the inner wall of the box body 2 is connected with a moving block 9 in a sliding mode through a supporting rod, one side of the moving block 9 is fixedly connected with a U-shaped block 30 matched with a cylindrical pin 505, the U-shaped block 30 is used for clamping the cylindrical pin 505 to force the rotating plate 501 to stop rotating, and the clamping position of the U-shaped block 30 and the cylindrical pin 505 is located on the axis connecting line of the rotating plate 501 and a grooved; the other side of the motion block 9 is fixedly connected with a fixture block 10, and one side of the fixture block 10 penetrates through the box body 2 and extends to the outside of the box body 2; the top of the clamping block 10 is provided with a clamping groove 11, the bottom of the inner wall of the clamping groove 11 is fixedly connected with a clamping spring 12, the top end of the clamping spring 12 is fixedly connected with a limiting block 13, the top of the limiting block 13 penetrates through the clamping block 10 and extends to the top of the clamping block 10, and the limiting block 13 can be well extruded through the elastic force of the clamping spring 12, so that the limiting block 13 is driven to move; when the limiting block 13 moves, the box body 2 can be clamped well, so that the stability of the moving block 9 after moving is ensured.

A use method of the multifunctional rotary worktable comprises the following steps:

when the intermittent rotation is performed:

in the first step, an object to be processed is placed at the top of the rotary table 24, the threaded rod 27 is rotated, the clamping plate 28 can be well driven to move, the anti-slip mat 29 can be well driven to move when the clamping plate 28 moves, and then the object can be clamped.

The second step, start first motor 7, when first motor 7 starts, will drive worm 8 and worm wheel 6 and rotate, when worm wheel 6 is rotatory, will drive rotor plate 501 and rotate, when rotor plate 501 is rotatory, will drive breach disc 502 and cylindric lock 505 and rotate, when cylindric lock 505 is rotatory, will inject the inside of motion groove 508, thereby it rotates to drive sheave 506 through motion groove 508, when sheave 506 is rotatory, will drive axis of rotation 3 and rotate, when axis of rotation 3 is rotatory, will drive carousel 24 and rotate.

When switching to continuous rotation is required:

and thirdly, moving the fixture block 10, wherein when the fixture block 10 moves, the moving block 9 is driven to move, and when the moving block 9 moves, the U-shaped block 30 is driven to move, so that the U-shaped block is clamped with the cylindrical pin 505. After the U-shaped block 30 is engaged with the cylindrical pin 505, the second fan-shaped groove 504 is located at the joint of the notched disc 502 and the sheave 506, so that the sheave 506 does not interfere with the notched disc 502 when rotating.

The fourth step, pulling action bars 23, action bars 23 during the motion, will drive T type piece 22 and move, T type piece 22 during the motion, will lose the joint with chucking piece 18, at this moment through the elastic force of extrusion spring 20 self, can be fine extrude motor cabinet 15, thereby drive second motor 16 and move, thereby make second bevel gear 17 and first bevel gear 14 mesh, and again through the motion of T type piece 22, T type piece 22 will insert the inside in second chucking groove 19, thereby form the joint to chucking piece 18.

And fifthly, starting the second motor 16, forming mechanical interlocking between the first motor 7 and the second motor 16 on a control system by adopting a composite button control circuit, starting only one motor at the same time, stopping the second motor 16 when starting the first motor 7, and stopping the first motor 7 when starting the second motor 16. When the second motor 16 is started, the second bevel gear 17 is driven to rotate, the second bevel gear 17 drives the first bevel gear 14 to rotate through meshing, when the first bevel gear 14 rotates, the rotating shaft 3 is driven to rotate, and when the rotating shaft 3 rotates, the rotating disc 24 is driven to rotate.

Principle of operation

When the device is used, an object to be processed is placed at the top of the turntable 24, the threaded rod 27 is rotated, when the threaded rod 27 rotates, the clamping plate 28 can be well driven to move, when the clamping plate 28 moves, the anti-slip mat 29 can be well driven to move, at the moment, the object can be clamped, the first motor 7 is started again, when the first motor 7 is started, if the second motor 16 works, the first motor 7 stops automatically, the worm 8 and the worm wheel 6 are driven to rotate by the first motor 7, when the worm wheel 6 rotates, the rotating plate 501 is driven to rotate, when the rotating plate 501 rotates, the notched disc 502 and the cylindrical pin 505 are driven to rotate, when the cylindrical pin 505 rotates, the notched disc is inserted into the moving groove 508, so that the grooved wheel 506 is driven to rotate through the moving groove 508, when the grooved wheel 506 rotates, the rotating shaft 3 is driven to rotate, when the rotating shaft 3 rotates, the rotating disc 24 is driven to rotate, the cylindrical pin 505 rotates for a circle, the grooved pulley 506 rotates for a quarter, the rotating disc 24 and the object are indirectly driven to rotate intermittently, the moving block 9 is driven to move through the movement of the fixture block 10, the U-shaped block 30 is driven to move when the moving block 9 moves, so as to be clamped with the cylindrical pin 505, so that the rotating plate 501 can be limited, the rotating plate 501 is prevented from rotating, the T-shaped block 22 is driven to move through the movement of the operating rod 23, the clamping with the clamping block 18 is lost when the T-shaped block 22 moves, the motor base 15 can be well extruded through the elastic force of the extrusion spring 20, so as to drive the second motor 16 to move, the first bevel gear 14 is driven to be close to the first bevel gear 14 when the second motor 16 moves, so as to enable the first bevel gear 17 to be meshed with the first bevel gear 14, and rethread first spring self elastic force, can be fine extrude T type piece 22, thereby make T type piece 22 and chucking piece 18 carry out the joint, the stability after the motion of chucking piece 18 has been guaranteed, rethread second motor 16's start-up will drive first bevel gear 14 and rotate, when starting second motor 16, if first motor 7 is working then will automatic stop, first bevel gear 14 rethread meshing drives second bevel gear 17 and rotates, when second bevel gear 17 is rotatory, will drive axis of rotation 3 direct rotation, axis of rotation 3 is rotatory will drive carousel 24 and rotate.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides an assembled steel construction building site is with multi-functional rotatory workstation, includes bottom plate (1), fixed setting box (2) of bottom plate (1) up end, fix box (2) top and can pivoted carousel (24) and set up clamping device on carousel (24), its characterized in that: a rotating shaft (3) is vertically arranged in the box body (2), and the upper end of the rotating shaft (3) penetrates through the top of the box body (2) and is fixedly connected with the lower end face of the rotating disc (24); the device is characterized by also comprising a top rod (4) vertically arranged in the box body (2), wherein the upper end and the lower end of the top rod (4) are respectively and rotatably connected to the top and the bottom of the inner wall of the box body (2) through bearings; a worm wheel (6) is horizontally and fixedly connected to the outer surface of the lower end of the ejector rod (4); one side of the bottom of the box body (2) is fixedly connected with a first motor (7), and an output shaft of the first motor (7) is fixedly connected with a worm (8) meshed with the worm wheel (6); an intermittent motion structure (5) is horizontally arranged on the ejector rod (4), and the intermittent motion structure (5) enables the rotating speed of the rotating shaft (3) to be slower than that of the ejector rod (4); a first bevel gear (14) horizontally arranged is fixedly connected to the outer circumferential surface of the rotating shaft (3), a second motor (16) is slidably arranged at the bottom of the inner wall of the box body (2), and a second bevel gear (17) matched with the first bevel gear (14) is fixedly connected to the outer surface of an output shaft of the second motor (16).

2. The multifunctional rotary worktable for assembly type steel structure building sites according to claim 1, wherein: the intermittent motion structure (5) comprises a circular rotating plate (501) horizontally arranged on the ejector rod (4), the upper end surface of the rotating plate (501) is coaxially and fixedly connected with a notched disc (502) with the diameter smaller than that of the rotating plate (501), and a first fan-shaped groove (503) and a second fan-shaped groove (504) are symmetrically arranged on the notched disc (502) from side to side; a vertically arranged cylindrical pin (505) is fixed in the area of the upper end surface of the rotating plate (501) outside the first fan-shaped groove (503); a grooved pulley (506) is horizontally and fixedly arranged on the rotating shaft (3), four sliding grooves (507) matched with the notch disc (502) for use are formed in the outer surface of the grooved pulley (506), and a moving groove (508) matched with the cylindrical pin (505) for use is formed between every two adjacent grooved pulleys (506).

3. The multifunctional rotary worktable for assembly type steel structure construction sites as claimed in claim 2, wherein: a moving block (9) capable of sliding left and right is also arranged in the box body (2); the upper end of the motion block (9) is connected in the box body (2) in a sliding way through a supporting rod; the left side of the motion block (9) is fixedly connected with a U-shaped block (30) used for clamping a cylindrical pin (505), and the right side of the motion block (9) is fixedly connected with a clamping block (10); the one end of fixture block (10) runs through box (2) and extends to the outside of box (2), draw-in groove (11) have been seted up at the top of fixture block (10), bottom fixedly connected with chucking spring (12) of draw-in groove (11) inner wall, the top fixedly connected with stopper (13) of chucking spring (12), the top of stopper (13) runs through fixture block (10) and extends to the top of fixture block (10).

4. The multifunctional rotary worktable for assembly type steel structure building sites according to claim 3, wherein: a motor seat (15) is arranged at the bottom of the inner wall of the box body (2) in a sliding manner; the second motor (16) is fixedly arranged on the motor base (15).

5. The multifunctional rotary worktable for assembly type steel structure building sites of claim 4, wherein: a clamping block (18) is horizontally and fixedly connected to one side, away from the second bevel gear (17), of the motor base (15), one end of the clamping block (18) penetrates through the box body (2) and extends to the outside of the box body (2), and a plurality of clamping grooves (19) are formed in the clamping block (18); the outer surface of the clamping block (18) between the inner wall of the box body (2) and the motor base (15) is sleeved with an extrusion spring (20).

6. The multifunctional rotary worktable for assembly type steel structure building sites of claim 5, wherein: an L-shaped plate (21) is fixedly connected to the outer surface of the box body (2) and positioned above the clamping block (18), a T-shaped block (22) capable of sliding up and down is connected to the L-shaped plate (21), and the T-shaped block (22) is matched with the clamping groove (19); the top of the T-shaped block (22) is fixedly connected with an operating rod (23).

7. A multi-functional rotary table for assembly type steel structure construction sites according to any one of the preceding claims, wherein: clamping device is including vertical fixing baffle (25) that carousel (24) up end both sides and symmetry set up, fixedly connected with screw block (26) on the relative side of baffle (25), the internal thread of screw block (26) is connected with threaded rod (27), the one end of threaded rod (27) is rotated through the bearing and is connected with clamp plate (28), fixedly connected with slipmat (29) on the side of clamp plate (28), the other end of threaded rod (27) runs through baffle (25) and extends to the opposite side of baffle (25).

8. The use method of the multifunctional rotary worktable for the assembly type steel structure construction site as claimed in claim 7, wherein: the method comprises the following steps:

when the intermittent rotation is carried out, the rotation speed of the rotor is controlled,

firstly, placing an object to be processed on a turntable (24), and clamping the object through a clamping device;

secondly, starting a first motor (7), wherein the first motor (7) sequentially drives a worm (8), a worm wheel (6) and a push rod (4) to rotate, the rotation of the push rod (4) drives an intermittent motion structure (5) to rotate, the intermittent motion structure (5) drives a rotating shaft (3) and a turntable (24) to rotate intermittently, and articles on the turntable (24) rotate intermittently;

when it is necessary to switch to the continuous rotation,

thirdly, the first motor (7) is closed, the intermittent motion structure (5) and the ejector rod (4) stop running, the second motor (16) slides, the second bevel gear (17) is meshed with the first bevel gear (14), the second motor (16) is fixed, and the second motor (16) is prevented from deviating;

and fourthly, starting a second motor (16), wherein the second motor (16) drives a first bevel gear (17) to rotate, the first bevel gear (17) drives a second bevel gear (14) to rotate through meshing, the second bevel gear (14) drives a rotating shaft (3) to rotate, and the rotating shaft (3) rotates to drive a turntable (24) and an object to rotate.