CN110775528B - Installation method of chain conveyor - Google Patents
Installation method of chain conveyor Download PDFInfo
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- CN110775528B CN110775528B CN201910906814.4A CN201910906814A CN110775528B CN 110775528 B CN110775528 B CN 110775528B CN 201910906814 A CN201910906814 A CN 201910906814A CN 110775528 B CN110775528 B CN 110775528B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/12—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface comprising a series of individual load-carriers fixed, or normally fixed, relative to traction element
- B65G17/126—Bucket elevators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G21/00—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
- B65G21/08—Protective roofs or arch supports therefor
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Abstract
The invention discloses an installation method of a chain conveyor, which comprises the following steps: positioning the lower corner box body on a lower box body base, connecting the lower horizontal section box body with the lower corner box body, fixing the lower horizontal section box body on the lower box body base, connecting the driven part box body with the lower horizontal section box body, and fixing the driven part box body on the lower box body base; lifting the vertical section box body, then placing the box body into a vertical frame for central positioning, and then connecting the box body with a lower corner box body and fixing the box body with the vertical frame; one end of the upper corner box body is butted, positioned and fixedly connected with the vertical section box body; the upper horizontal section box body is connected with the upper corner box body and then fixed on the upper box body base, and then the driving part box body is connected with the upper horizontal section box body and then fixed on the upper box body base; and a driving chain connected with a hopper is arranged in the box body and sequentially wound on the driving chain wheel, the steering chain wheel and the driven chain wheel. The invention can obviously improve the installation precision of the conveying line and ensure the stable operation of the conveying line.
Description
Technical Field
The invention relates to the technical field of chain type conveying equipment in the metallurgical industry, in particular to an installation method of a chain type conveyor.
Background
The active coke flue gas purification technology can comprehensively remove sulfur dioxide, nitrogen oxides and dioxin substances in sintering flue gas, the desulfurization efficiency reaches more than 98 percent, the denitration efficiency reaches more than 70 percent, and the active coke flue gas purification technology conforms to the current environmental protection requirement and the future development trend of the sintering flue gas purification technology, wherein a chain conveyor is the core equipment of an adsorption regeneration system, the chain conveyor comprises a conveying section, the conveying section comprises a box body, a left guide rail, a right guide rail and a driving chain which are arranged in the box body, one end of the conveying section is a driving end provided with a left driving chain wheel and a right driving chain wheel, the two driving chain wheels are connected through a synchronous shaft to form synchronous rotation, the other end of the conveying section is a driven end provided with a left driven chain wheel and a right driven chain wheel, the two driven chain wheels are connected through the synchronous shaft to form synchronous rotation, and the two driving chains are, a suspension shaft is arranged between the left driving chain and the right driving chain at intervals, a hopper is suspended on the suspension shaft, and two ends of the suspension shaft are respectively provided with a roller which is connected to the guide rail in a rolling way. When the motor drives the driving chain wheel to rotate through the transmission mechanism, the driving chain can be driven to slide on the guide rail, and then the hopper is driven to move so as to convey materials.
It is known that in the prior art, the chain conveyor line is arranged as a horizontal oblique line or a vertical conveyor line, since in the activated coke flue gas adsorption regeneration system, the material needs to be conveyed from a lower position to a higher position, that is, at least one horizontal conveyor line at the lower position, one horizontal conveyor line at the higher position, and one vertical conveyor line connecting the horizontal conveyor lines at the higher position and the lower position are needed, and at the connection position of the two conveyor lines, the material needs to have a transfer procedure so as to transfer the material in the hopper of one conveyor line into the hopper of the other conveyor line, thereby causing the trouble of the installation and the use of the conveyor lines and reducing the efficiency of the activated coke flue gas purification. In particular, in the activated coke flue gas adsorption regeneration system, a large amount of material is required to be conveyed, so that the size of each hopper and the size of the cross section of the conveying line are large, the length of the conveying line is long, that is, a horizontal conveying line and a vertical conveying line can be connected in time, and the whole conveying line is difficult to install due to the long length and heavy weight, so that the installation accuracy is affected, and the stable operation of the conveying line is not facilitated.
Disclosure of Invention
The invention aims to solve the problems that a chain conveyor in the existing active coke flue gas adsorption regeneration system is difficult to install due to large size and long length, low in installation precision, influences the stable operation of a conveying line and the like, and provides an installation method of the chain conveyor, which can remarkably improve the installation precision of the conveying line and ensure the stable operation of the conveying line.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for installing chain conveyer includes such steps as sequentially connecting drive unit, upper horizontal segment, vertical segment, lower horizontal segment and driven unit to form a Z-shaped conveying segment, which includes a cylindrical spliced box, left and right guide tracks fixed in said box, left and right drive chain wheels on drive unit, left and right driven chain wheels on driven unit, turning chain wheels at the turning positions of vertical segment, upper horizontal segment and lower horizontal segment, drive chains around the turning chain wheels, hanging axles with hopper and rollers on two ends of hanging axles, fixing the boxes on upper and lower bases, locating and fixing the boxes on lower and lower bases, the box body of the vertical section is positioned and fixed in the vertical frame, and the method comprises the following steps:
a. positioning and fixing a lower corner box body connected with a box body of a vertical section in a lower horizontal section box body on a lower box body base, connecting the lower horizontal section box body with the lower corner box body, fixing the lower horizontal section box body on the lower box body base, connecting a driven part box body with the lower horizontal section box body, and fixing the driven part box body on the lower box body base;
b. hoisting the vertical section box body by using a crane, then placing the vertical section box body into the vertical frame for central positioning, ensuring that the central positioning error of the vertical section box body is smaller than an allowable value, and then connecting the vertical section box body with the lower corner box body and fixing the vertical section box body with the vertical frame;
c. one end of an upper corner box body connected with the box body of the vertical section in the upper horizontal section box body is butted and positioned with the box body of the vertical section, the other end is positioned and fixed on a base of the upper box body, and then the upper corner box body is fixedly connected with the box body of the vertical section;
d. the upper horizontal section box body is connected with the upper corner box body and then fixed on the upper box body base, and then the driving part box body is connected with the upper horizontal section box body and then fixed on the upper box body base;
e. and a driving chain connected with a hopper is arranged in the box body and sequentially wound on the driving chain wheel, the steering chain wheel and the driven chain wheel.
The chain conveyer includes one Z-shaped conveying section comprising driving part, one upper horizontal section, one vertical section, one lower horizontal section and one driven part connected successively, and steering chain wheels set in the turning points of the vertical section, the upper horizontal section and the lower horizontal section. When the motor drives the driving chain wheel of the driving part to rotate, the driving chain can be driven to circularly move, and then the hopper is driven to move, so that materials are conveyed in the horizontal direction and the vertical direction.
It will be appreciated that a Z-chain conveyor of such length cannot be installed directly at the site of use after complete assembly in a factory. To this end, the present invention divides the chain conveyor into a driving part, an upper horizontal section, a vertical section, a lower horizontal section, and a driven part, and it is known that the lower horizontal section can be connected to the lower end of the vertical section through a lower corner box having two openings perpendicular to each other, and the upper horizontal section can be connected to the upper end of the vertical section through an upper corner box having two openings perpendicular to each other.
The lower corner box is relatively small in size, light in weight, and easy to operate above the lower box base on the ground. Therefore, during installation, a lower corner box body connected with the vertical section box body in the lower horizontal section box body can be positioned and fixed firstly, then the lower corner box body is sequentially positioned and connected with the lower horizontal section box body and the driven part box body on one side by taking the lower corner box body as a reference, the vertical section box body and the lower upper corner box body are sequentially positioned and connected on the other side by taking the lower corner box body as a reference, and then the upper horizontal section box body and the driving part box body are sequentially positioned and connected, so that the complete chain conveyor can be formed.
It should be noted that the guide rails need to be installed and fixed in the box body first, the box bodies can be connected through flanges and screws, and the sealing rings and the sealing glue are arranged at the joints. Because the upper horizontal section, the lower horizontal section, the driving part and the driven part mainly ensure the positioning accuracy of the central line in the horizontal direction, and the length direction has no requirement, when the lower corner box body is positioned firstly, the positions of the upper horizontal section and the lower horizontal section in the horizontal direction are determined, and then the positions of the driven part and the driving part connected with the upper horizontal section and the lower horizontal section are determined. Particularly, the lower corner box body is positioned firstly, so that the length of the box body which is subsequently extended and connected can be shortened as much as possible, and the accumulated error is reduced to the maximum extent.
Preferably, the two driving sprockets and the two driven sprockets are coaxially connected through a synchronizing shaft respectively, and after the driving part and the driven part are fixed, a height error Δ H in the vertical direction between the left driving sprocket and the right driving sprocket and between the left driven sprocket and the right driven sprocket needs to be detected, and the specific method is as follows:
the leveling instrument is arranged in the direction of an extension line of the side axis of the synchronizing shaft, then a measuring staff is vertically arranged at the upper side of the part, exposed out of the bearing seat, of the two ends of the synchronizing shaft in sequence, the cross wire of a telescope of the leveling instrument is aligned to the scale marks of the measuring staff, the scale marks corresponding to the two measuring staff are recorded respectively, and the difference value of the two scale marks is the height error delta H.
It is known to provide levels comprising a telescope, the crosshairs seen by the telescope being the sighting axis of the telescope. When the telescope is used, the collimation axis of the telescope can be kept horizontal through adjustment. When the measuring scale is placed on the upper side of the synchronizing shaft and the cross wire of the telescope is aligned with the scale marks of the measuring scale, the relative height size of the measuring point on the synchronizing shaft can be displayed and recorded. Through the relative height value of contrast synchronizing shaft both ends upside, can conveniently obtain the high error at synchronizing shaft both ends to ensure the high error at synchronizing shaft both ends in design range through mode such as bed hedgehopping, and then be favorable to driving the chain to move hopper steady operation and carry the material. The measuring instrument used in the method is a common instrument in the engineering installation industry, so that the parts are favorable for saving the cost and are simple, convenient and feasible.
Preferably, a plurality of positioning components arranged at intervals along the height direction are arranged on the vertical frame, each positioning component comprises a positioning block arranged on four inner sides of the vertical frame and an adjusting rod connected with the positioning block, the inner end surface of each positioning block is attached to the outer surface of the box body, a spherical rotating cavity is arranged in each positioning block, the outer end surface of each positioning block is provided with a circular through hole penetrating through the inner end surface, a rectangular mounting hole with two opposite width inner side surfaces and two opposite length inner side surfaces, the centers of the circular through hole and the mounting hole are positioned on a normal line of the outer end surface of each positioning block passing through the sphere center of the rotating cavity, the mounting hole extends from the outer end surface of each positioning block to the sphere center of the rotating cavity, the width inner side surface of the mounting hole is tangent to the rotating cavity, a rotatable adjusting block is arranged in the rotating cavity and comprises two parallel, thereby make the regulating block be the round platform shape, the center of regulating block terminal surface is equipped with connect the via hole, and the thickness of regulating block is less than the width of mounting hole, and the one end of adjusting the pole is pegged graft at the connect downthehole, and the other end of adjusting the pole stretches out circular via hole and with vertical frame threaded connection, is located to be equipped with on the regulation pole of rotation intracavity and supports the annular shaft shoulder that leans on the regulating block.
It can be understood that it is important that the center line of the vertical section box is vertical, and the vertical frame is difficult to ensure high positioning precision during construction. Therefore, when the vertical section box body is hoisted into the vertical frame, the vertical section box body is positioned through the positioning assembly, so that the center positioning precision of the vertical section box body is ensured.
After the vertical section box body is hoisted into the vertical frame, the adjusting rod in threaded connection with the vertical frame can be rotated, and the adjusting block at the end part of the adjusting rod drives the positioning block to move transversely to be close to and attached to the outer side wall of the vertical section box body. Because the adjusting block is rotatably connected in the rotating cavity of the positioning block, the positioning block can rotate 360 degrees in all directions relative to the adjusting block, so that the positioning block can rotate in a self-adaptive manner, the inner end face of the positioning block can be completely attached to the outer side wall of the vertical section box body, and the reliable positioning of the box body is ensured.
It can be understood that the central positioning precision of the vertical section box body can be detected through a corresponding detecting instrument, when the positioning precision exceeds a designed value, the positioning block on one side can move backwards by rotating the adjusting rods on the two opposite sides, the positioning block on the other side can move forwards, so that the box body is pushed, and when the positioning of the box body meets the design requirement, the adjusting rods on the two sides are locked, so that the box body can be accurately positioned.
In particular, the thickness of the adjusting block is smaller than the width of the mounting hole, and the inner side surface of the width of the mounting hole is tangent to the rotating cavity, that is, the length of the mounting hole is matched with the diameter of the mounting cavity, namely the diameter of the adjusting block. Therefore, during assembly, the adjusting block can be rotated by 90 degrees, so that the adjusting block is placed into the mounting hole in thickness until the annular spherical surface of the adjusting block is concentric with the mounting cavity, and the axis of the adjusting block is approximately vertical to the axis of the positioning block. And then the adjusting block is rotated by 90 degrees, and the axis of the adjusting block at the moment is approximately superposed with the axis of the positioning block. Then the end part of the adjusting rod is inserted into the connecting through hole of the adjusting block. Because the adjusting rod is limited by the round through hole, the adjusting rod can only obliquely deflect a small angle relative to the positioning block, and the adjusting rod can be effectively prevented from being separated from the mounting hole after rotating. In addition, the adjusting block is in ball joint with the positioning block, so that the adjusting rod can drive the positioning block to move through the adjusting block, and the box body is reliably positioned by axial extrusion force of the adjusting rod on the premise of the box body. Further, because the positioning block is connected with the surface of the box body in a sliding mode, the vertical section box body can be allowed to be adjusted in height direction in a proper fine mode when being installed and fixed, and meanwhile accurate center positioning is achieved.
Preferably, the adjusting rod extending into the connecting through hole is in a cone frustum shape with the taper of 1/40-1/30, a threaded blind hole and a cross-shaped separation seam extending to the conical surface of the adjusting rod are arranged on the axis of the end surface of the adjusting rod, the depth of the separation seam is larger than that of the threaded blind hole, a conical counter bore is arranged at the opening of the threaded blind hole, a tensioning screw is connected with the threaded blind hole in a threaded manner, and the rear end of the tensioning screw, located in the counter bore, is integrally connected with a conical tensioning section matched in the counter bore.
The end of the adjusting rod is in the shape of a truncated cone with the taper between 1/40 and 1/30, so that the adjusting rod can be conveniently inserted into the connecting through hole of the adjusting block. At the moment, the tensioning screw can be screwed, and the tensioning section at the rear end of the tensioning screw can extrude the end part of the adjusting rod, so that the adjusting rod is tensioned in the connecting through hole of the adjusting block, and the adjusting rod is reliably connected with the adjusting block.
Preferably, a plurality of groups of measuring assemblies arranged at intervals in the height direction are arranged on the outer side of the vertical section box body with the rectangular cross section, each measuring assembly comprises a measuring bump detachably arranged at the middle position of the periphery of the outer side of the vertical section box body, a reference bump is arranged at the middle position of four sides of the upper end of the vertical frame with the rectangular cross section, and in the step b, the center positioning error of the vertical section box body placed in the vertical frame is measured by adopting the following method: a weight line is hung in a vertical frame, the upper ends of the weight line are sequentially positioned at four reference convex blocks, a positioning barrel with lubricating oil inside is placed at the bottom of the vertical frame, a heavy hammer of the weight line is suspended and immersed in the lubricating oil of the positioning barrel, when the weight line is stable, the distance L between a measuring convex block on one corresponding side and the weight line is measured, and the difference delta L between the distances L on the two opposite sides is the center positioning error of the vertical section box body.
It is known that the determination of the measurement reference by the weight line is a conventional technique in the industries of engineering installation, construction and the like. Because the vertical short box body has a considerable height, correspondingly, a heavy hammer on a heavy hammer line is easy to shake back and forth due to factors such as wind blowing and the like, thereby seriously influencing the measurement precision and the measurement efficiency. The heavy hammer of the heavy hammer line is suspended and immersed in the lubricating oil of the positioning barrel, so that on one hand, the free swing of the heavy hammer can be ensured, and on the other hand, the damping of the heavy hammer during the transverse swing can be greatly increased by the lubricating oil with higher viscosity in the positioning barrel, thereby remarkably reducing the transverse swing amplitude and frequency of the heavy hammer, eliminating the adverse effect of slight wind direction change on the heavy hammer, and remarkably improving the measurement accuracy and efficiency.
Preferably, in step e, the driving chain is firstly split into a driving part and a return part, and then the driving part and the return part are respectively split into a horizontal section and a vertical section, and the corresponding suspension shafts and the hoppers are connected to form corresponding chain assemblies, wherein the steering chain wheels comprise an inner steering chain wheel used for being meshed with the driving chain of the return part and an outer steering chain wheel used for being meshed with the driving chain of the driving part; then, vertically hoisting the horizontal section chain assembly of the return part by using a crane to enable the lower end of the chain assembly to enter a box body of a driving part, transversely dragging the lower end of the chain assembly to an inner steering chain wheel of which the front end is lapped at the turning part of the vertical section and the upper horizontal section in the box body of the upper horizontal section by using a tractor, and enabling the rear end of the chain assembly to be wound upwards and meshed on the driving chain wheel; then, vertically hoisting the vertical section chain assembly of the return part by using a crane and placing the vertical section chain assembly into the vertical section box, transversely dragging the lower end of the vertical section chain assembly to the position of a driven sprocket wheel with the front end reaching the driven part in the lower horizontal section box by using a tractor, upwards winding the front end of the chain assembly and meshing the front end of the chain assembly on the driven sprocket wheel in a locked state, and then connecting the upper end of the vertical section chain assembly and the front end of the horizontal section chain assembly of the return part into the chain assembly of the return part; according to the method, the horizontal chain assembly of the driving part is arranged in the box body of the driving part and the upper horizontal section, the vertical chain assembly of the driving part is arranged in the box body of the vertical section, the lower horizontal section and the driven part, the upper end of the vertical chain assembly and the front end of the horizontal chain assembly of the driving part are connected into the chain assembly of the driving part, and the chain assembly of the driving part and the chain assembly of the returning part are respectively connected at the driving chain wheel and the driven chain wheel.
It is known that the present invention belongs to a large chain conveyor, the drive chain of which the hopper is connected to is not only long but also heavy. In order to facilitate the installation of the driving chain, the driving chain is split into the driving part and the returning part, and then the driving part and the returning part are split into the horizontal section and the vertical section respectively, so that the corresponding chain assembly is assembled on the tool jig on the ground conveniently. In particular, the present invention is to vertically hoist the chain assembly by using a hoist so that the lower end thereof is put into an opening at one end of the case, and then laterally drag the lower end of the chain assembly by using a tractor so that rollers at both ends of a suspension shaft of the chain assembly at a horizontal section are supported on the guide rails, thereby easily pulling the chain assembly.
It should be noted that, when the chain assembly is hoisted, the steel wire rope can be hooked on the suspension shafts of the 4 th and 5 th sections of the driving chain in the chain assembly, so that the end part of the driving chain has 4 and 5 sections of free parts, and the driving chain is conveniently wound on the driving chain wheel or the driven chain wheel and is connected with the vertical section of the chain assembly.
Therefore, the invention has the following beneficial effects: the installation accuracy of the conveying line can be remarkably improved, and the stable operation of the conveying line is ensured.
Drawings
Fig. 1 is a schematic view of a chain conveyor.
Fig. 2 is a schematic cross-sectional structure of the case.
Fig. 3 is a schematic view of the height error of the left and right drive sprockets.
FIG. 4 is a schematic view of a positioning assembly.
Fig. 5 is a projection view of the outer end face of the locating block.
Fig. 6 is a schematic view of a coupling structure of the adjustment lever and the adjustment block.
Fig. 7 is a projection view of the end face of the adjustment lever.
Fig. 8 is a schematic diagram of a measurement assembly.
In the figure: 1. a conveying section 11, a driving part 111, a driving chain 112, a synchronizing shaft 12, a driven part 121, a driven sprocket 13, an upper horizontal section 14, a lower horizontal section 15, a vertical section 151, a steering sprocket 2, a box 21, an upper steering box 22, a lower steering box 23, a measuring bump 3, a guide rail 4, a driving chain 41, a hanging shaft 42, a hopper 43, a roller 44, a driving part 45, the device comprises a return part 5, an upper box body base 6, a lower box body base 7, a vertical frame 71, a positioning block 711, a rotating cavity 712, a circular through hole 713, a mounting hole 72, an adjusting rod 721, an annular shaft shoulder 722, a separating gap 723, a threaded blind hole 724, a counter bore 73, an adjusting block 74, a tensioning screw 741, a tensioning section 75, a reference bump 8, a heavy hammer line 81, a heavy hammer 9 and a positioning barrel.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
A method for installing a chain conveyor comprises a Z-shaped conveying section 1 formed by sequentially connecting a driving part 11, an upper horizontal section 13, a vertical section 15, a lower horizontal section 14 and a driven part 12, as shown in figures 1 and 2, wherein the conveying section comprises a cylindrical box body 2, a left guide rail 3, a right guide rail 3, a left driving chain wheel 111, a right driving chain wheel 111, a left driven chain wheel 121, a right driven chain wheel 121, a steering chain wheel 151, a driving chain 4, a hanging shaft 41, a hopper 42, rollers 43, a roller 43 and a driving roller, wherein the driving chain wheel and the driven chain wheel are wound around the steering chain wheel, the hanging shaft is arranged between the left driving chain wheel and the right driving chain wheel at intervals, the two ends of the hanging shaft are respectively provided with the rollers 43, the rollers are connected to the guide rails in a rolling manner, the box body of the driving part and the upper horizontal section is fixed on an upper box body base 5, the driven part and the box body of the lower horizontal section are positioned and fixed on a lower box body base 6, and the box body of the vertical section is positioned and fixed in a vertical frame 7.
It should be noted that the upper part of the drive chain on the upper and lower horizontal sections is referred to as the drive part 44, and the lower part is referred to as the return part 45. In addition, the two driving chain wheels and the two driven chain wheels are coaxially connected through the synchronizing shaft 112 respectively, when the driving chain wheels rotate, the driving parts of the left driving chain and the right driving chain can be driven to move to the driving chain wheels from the driven chain wheels gradually in a synchronous mode, the returning parts of the driving chains move to the driven chain wheels gradually from the driving chain wheels, and at the moment, the rollers at the two ends of the suspension shaft roll on the guide rails on the corresponding side, so that materials are conveyed to the driving parts from the driven parts.
In addition, the lower horizontal section box body comprises a lower corner box body 22 connected with the lower end of the vertical section box body, the upper horizontal section box body comprises an upper corner box body 21 connected with the upper end of the vertical section box body, and the upper horizontal section box body and the lower horizontal section box body are provided with two openings which are perpendicular to each other.
It should be noted that the diverting sprockets at the upper and lower ends of the vertical section each include an inner diverting sprocket for engaging the drive chain of the return section and an outer diverting sprocket for engaging the drive chain of the drive section. Besides, the cross section of the box body and the cross section of the vertical frame are rectangular.
Specifically, the installation method of the chain conveyor comprises the following steps:
a. positioning and fixing a lower corner box body in the lower horizontal section box body on a lower box body base, enabling one opening of the lower corner box body to be upward, positioning the lower corner box body at the center in a vertical frame, enabling the other opening of the lower corner box body to face one side of a driven part on the lower box body base, positioning the lower corner box body along the central line of the lower box body base, connecting the lower horizontal section box body with the lower corner box body, fixing the lower horizontal section box body on the lower box body base, connecting the driven part box body with the lower horizontal section box body, and fixing the lower horizontal section box body on the lower box body base;
b. vertically hoisting the vertical section box body by using a crane, then placing the vertical section box body into a vertical frame for central positioning, ensuring that the central positioning error of the vertical section box body is smaller than an allowable value, and then connecting the lower end of the vertical section box body with an upward opening of a lower corner box body and fixing the vertical section box body with the vertical frame;
c. an opening at one downward end of an upper corner box body in the upper horizontal section box body is butted and positioned with the upper end of the vertical section box body, an opening at the other end of the upper corner box body facing the driving part is positioned and fixed on the upper box body base along the central line of a lower box body base, and then the upper corner box body is fixedly connected with the vertical section box body;
d. the upper horizontal section box body is connected with the upper corner box body and then fixed on the upper box body base, and then the driving part box body is connected with the upper horizontal section box body and then fixed on the upper box body base;
e. and a driving chain connected with a hopper is arranged in the box body and sequentially wound on the driving chain wheel, the steering chain wheel and the driven chain wheel.
When the motor drives the driving chain wheel of the driving part to rotate, the driving chain can be driven to circularly move, and then the hopper is driven to move, so that the material is conveyed to one side of the driving part from one side of the driven part.
It should be noted that, the guide rail, the driving sprocket, the driven sprocket, etc. are first installed and fixed in the corresponding upper corner box, lower corner box, upper horizontal box, lower horizontal box, driving part, driven part, and the boxes are connected by bolts through flange edges, and the joints are provided with sealing rings and sealants.
In order to ensure that the hopper is driven by the driving chain to run smoothly, as shown in fig. 3, after the driving part and the driven part are fixed, a height error Δ H in the vertical direction between the left and right driving sprockets and the left and right driven sprockets needs to be detected, and the specific method is as follows:
firstly, arranging a level gauge on the left side of a synchronizing shaft of a driving part in the direction of an extension line of the axis of the synchronizing shaft, adjusting a sight axis of a level gauge telescope to be in a horizontal state, vertically placing a measuring staff with a height scale mark on the surface on the upper side of the part, exposed out of a bearing seat, of the left end of the synchronizing shaft, aligning a cross wire representing the sight axis in the level gauge telescope with the scale mark of the measuring staff, and recording a first scale mark corresponding to the cross wire on the measuring staff; and then vertically placing the measuring staff gauge to the right end of the synchronizing shaft, exposing the right end of the synchronizing shaft to the upper side of the bearing seat part, aligning the cross wire in the level telescope with the scale marks of the measuring staff gauge, recording a second corresponding scale mark of the cross wire on the measuring staff gauge, and taking the difference value between the front scale mark and the rear scale mark as the height error delta H of the left end and the right end of the synchronizing shaft.
If the height error Δ H exceeds the allowable design value, the adjustment may be performed by adjusting the block pad up or the like until the height error Δ H is equal to or less than the allowable design value.
In order to facilitate the central positioning of the vertical section box body in the vertical frame, as shown in fig. 1, 4 and 5, a plurality of positioning assemblies arranged at intervals along the height direction can be arranged on the vertical frame, each positioning assembly comprises a positioning block 71 arranged on four inner sides of the vertical frame and an adjusting rod 72 connected with the positioning block, the inner end surface of each positioning block is attached to the outer surface of the box body, a spherical rotating cavity 711 is arranged inside each positioning block, the outer end surface, far away from the box body, of each positioning block is provided with a circular through hole 712 penetrating through the inner end surface and a rectangular mounting hole 713, the centers of the circular through holes and the mounting holes are both located on the outer end surface of each positioning block on a normal line passing through the sphere center of the rotating cavity, and each rectangular mounting hole comprises two opposite. The mounting hole extends to the centre of sphere in the rotation chamber by the outer terminal surface of locating piece to the width medial surface of mounting hole is tangent with the rotation chamber. In addition, the rotatable adjusting block 73 is arranged in the rotating cavity and comprises two parallel round surfaces and an annular spherical surface which is connected between the two round surfaces and matched with the rotating cavity, so that the adjusting block is in a spherical table shape. That is, a table-shaped adjustment block is understood to mean a portion of a sphere that is rotatably fitted in a rotation chamber and that lies between two parallel cutting planes after being cut by the two parallel cutting planes. In addition, the center of regulating block terminal surface is equipped with connect the through-hole, and the thickness of regulating block is less than the width of the mounting hole of rectangle, and the one end of adjusting the pole is pegged graft in the connect through-hole after stretching into circular via hole, and the other end of adjusting the pole transversely stretches out circular via hole and with vertical frame threaded connection, is located to rotate and is equipped with annular shoulder 721 on the regulation pole of intracavity, and annular shoulder supports and leans on the side of being close to the outer terminal surface one side of locating piece on the regulating block to make the regulation pole can form inside extrusion force to the regulating block.
When the vertical section box body needs to be hoisted into the vertical frame, the adjusting rod can be rotated reversely as far as possible so that the adjusting rod can drive the adjusting block and further drive the positioning block to move outwards, the vertical section box body is hoisted into the vertical frame conveniently, and collision interference between the vertical section box body and the positioning block is avoided.
After the vertical section box body is hoisted into the vertical frame, the adjusting rod in threaded connection with the vertical frame can be rotated in the forward direction, the adjusting rod moves axially inwards, and the adjusting block at the end part of the adjusting rod drives the positioning block to move transversely to be close to and attached to the outer side wall of the vertical section box body, so that the vertical section box body is reliably supported and positioned. Because the adjusting block is matched with the spherical surface of the rotating cavity of the positioning block, the positioning block can rotate 360 degrees in all directions relative to the adjusting block, so that the positioning block can rotate in a self-adaptive manner, the inner end surface of the positioning block can be completely attached to the outer side wall of the vertical section box body, and the reliable positioning of the box body is ensured.
It should be noted that, the positioning accuracy of the vertical section box body and the vertical frame in the two directions of X, Y can be detected by a corresponding detecting instrument, when the positioning accuracy exceeds the designed value, the adjusting rod on one side can be rotated reversely to move the positioning block on the side backwards, and then the adjusting rod on the other opposite side is rotated forwardly to move the positioning block on the side forwards, so as to push the box body, and correct the positioning accuracy of the vertical section box body. When the positioning of the box body meets the design requirements, the adjusting rods on the two sides are locked, and the box body can be accurately positioned.
It can be understood that a lock nut may be threadedly coupled to the adjusting lever to lock the adjusting lever to the vertical frame, and a regular polygonal coupler may be provided at an outer end of the adjusting lever to conveniently rotate the adjusting lever by means of a wrench or the like.
Particularly, when the adjusting block needs to be installed in the rotating cavity of the positioning block, the adjusting block can be rotated by 90 degrees firstly, so that the axis of the adjusting block is approximately vertical to the axis of the installation hole, and then the adjusting block is placed in the installation hole in a thickness mode. When the adjusting block is placed to the bottom in the mounting hole, the annular spherical surface of the adjusting block is concentric with the mounting cavity. And then the adjusting block is rotated by 90 degrees, and the axis of the adjusting block at the moment is approximately superposed with the axis of the mounting hole. Then the end part of the adjusting rod extends into the round through hole and is inserted into the connecting through hole of the adjusting block. Because the adjusting rod is limited by the round through hole, the adjusting rod can only obliquely deflect a small angle relative to the positioning block, and the adjusting rod can be effectively prevented from being separated from the mounting hole after rotating.
In order to ensure the reliable connection between the adjusting rod and the circular through hole, as shown in fig. 6 and 7, the end of the adjusting rod outside the annular shoulder, i.e., the adjusting rod extending into the connecting through hole, is in the shape of a truncated cone with a small head and a large back, a threaded blind hole 723 and a cross-shaped separation slit 722 are arranged on the axis of the end surface of the truncated cone-shaped adjusting rod, the depth of the separation slit is greater than that of the threaded blind hole, and the separation slit transversely extends to the conical surface of the adjusting rod, so that the inner end of the adjusting rod is divided into four pieces.
In addition, a conical counter bore 724 with a large opening and a small opening is arranged at the opening of the threaded blind hole, a tensioning screw 74 is connected in the threaded blind hole in a threaded manner, and a conical tensioning section 741 which is matched in the counter bore is integrally connected to the rear end of the tensioning screw in the counter bore.
When the inner end of the adjusting rod is inserted into the circular through hole of the adjusting block, the tensioning screw can be screwed, and the tensioning section at the rear end of the tensioning screw can extrude the end part of the adjusting rod, so that the adjusting rod is tensioned in the connecting through hole of the adjusting block, and the adjusting rod is reliably connected with the adjusting block.
It should be noted that the circular through hole penetrates through the inner end surface of the positioning block, so that an inner hexagonal counter bore can be formed in the end surface of the tensioning section of the tensioning screw, so that the inner hexagonal wrench can extend into the circular through hole in the inner end surface of the positioning block and can be inserted into the inner hexagonal counter bore formed in the end surface of the tensioning section, and the tensioning screw can be conveniently rotated.
In order to accurately measure the center positioning accuracy of the vertical section box in the vertical frame, as shown in fig. 8, a plurality of groups of measuring assemblies arranged at intervals in the height direction may be disposed outside the vertical section box, each measuring assembly includes a measuring protrusion 23 detachably disposed at a middle position around the outside of the vertical section box, and a reference protrusion 75 is disposed at a middle position of four sides of the upper end of the vertical frame.
Thus, in step b, the centering error of the vertical section box into the vertical frame can be measured by the following method:
firstly, suspending a weight line 8 in a vertical frame, positioning the upper end of the weight line at a first reference bump, and measuring and recording the distance L between a measuring bump at the corresponding side of each measuring component and the weight line when the weight line is stable; and then moving and positioning the heavy hammer line at a second reference lug on the opposite side of the first reference lug, measuring and recording the distance L between the measurement lug on the corresponding side in each measurement assembly and the heavy hammer line, and calculating and obtaining the difference value delta L between the distances L on the opposite sides, namely the center positioning error of the vertical section box body relative to the vertical frame in one direction (X direction).
By analogy, the weight line is moved and positioned at the third reference bump and the fourth reference bump at the side opposite to the third reference bump in sequence, and the distance L between the measurement bump at the corresponding side in each measurement component and the weight line is measured and recorded respectively, so that the difference value Δ L between the distances L at the two opposite sides can be obtained, namely the center positioning error of the vertical section box body relative to the vertical frame in the other direction (Y direction).
In order to avoid the swinging of the weight line caused by wind blowing and other factors, a positioning barrel 9 with high-viscosity lubricating oil inside can be arranged at the bottom of the vertical frame, and the weight 81 of the weight line is suspended and immersed in the lubricating oil of the positioning barrel. On the one hand, can ensure the free swing of weight, on the other hand, the higher lubricating oil of consistency can greatly increase the damping when weight lateral swing in the location bucket to show the lateral swing range and the frequency that reduce the weight, eliminate slight wind direction change and to the adverse effect of weight, make the weight line keep perpendicular and stable, be favorable to ground promotion measurement accuracy and efficiency.
In order to facilitate the installation of the driving chains, in the step e, the driving chains can be firstly split into a driving part positioned on the upper layer and a returning part positioned on the lower layer, then the driving part and the returning part are respectively split into a horizontal section and a vertical section, and a corresponding suspension shaft and a hopper are connected between the left driving chain and the right driving chain of each part, so that a driving part horizontal section chain assembly, a driving part vertical section chain assembly, a returning part horizontal section chain assembly and a returning part vertical section chain assembly are respectively formed, and each chain assembly with the shortened length can be conveniently assembled on a tool jig arranged on the ground.
Then, a crane is used for vertically hoisting the horizontal section chain assembly of the return part, the lower end of the chain assembly enters the box body of the driving part, a steel wire rope transversely penetrates through the box body of the upper horizontal section and is connected with the lower end of the chain assembly, a tractor is used for transversely dragging the lower end of the chain assembly in the box body of the upper horizontal section through the steel wire rope until the front end of the chain assembly is lapped on an inner steering chain wheel at the turning part of the vertical section and the upper horizontal section, the rear end of the chain assembly is upwards wound and meshed on the driving chain wheel, and at the moment, rollers at two ends of a suspension shaft of the chain assembly are supported on a guide rail, so that the tractor can easily drag the chain assembly. It will be appreciated that the tractor and the crane need to operate in conjunction with each other so that as the crane steps down the chain assembly, the tractor pulls the chain assembly accordingly. In addition, the crane can hang the suspension shafts at the positions 4 and 5 sections away from the end parts of the driving chains in the chain assembly through the steel wire rope, so that a plurality of sections of the driving chains at the rear end of the chain assembly are in a free state and can be wound upwards and meshed on the driving chain wheel;
and then, vertically hoisting the returned vertical section chain assembly by using a crane and placing the vertical section chain assembly into the vertical section box until the lower end of the vertical section chain assembly reaches an inner turning chain wheel at the turning position of the vertical section and the lower horizontal section, and transversely drawing the lower end of the vertical section chain assembly in the lower horizontal section box by using a tractor until the front end of the chain assembly reaches the position of a driven chain wheel of the driven part, and enabling the front end of the chain assembly to be wound upwards and meshed on the driven chain wheel. The upper end of the vertical length chain assembly and the front end of the return portion horizontal length chain assembly are then connected into a return portion chain assembly.
It should be noted that, the driving sprocket and the driven sprocket should be in a locked state at this time, so as to prevent the driving chain wound around and engaged with the driving sprocket and the driven sprocket from driving the driving sprocket and the driven sprocket to rotate, and further cause the falling of the driving chain.
According to the method, the horizontal chain assembly of the driving part is arranged in the box body of the driving part and the upper horizontal section, the vertical chain assembly of the driving part is arranged in the box body of the vertical section, the lower horizontal section and the driven part, the upper end of the vertical chain assembly and the front end of the horizontal chain assembly of the driving part are connected into the chain assembly of the driving part, and the chain assembly of the driving part and the chain assembly of the returning part are respectively connected at the driving chain wheel and the driven chain wheel.
Of course, the openable box covers are required to be arranged on the upper side of the driving part box body, the upper side and the side of the upper corner box body, the side of the lower corner box body and the upper side of the driven part box body respectively, so that the operation of an installer is facilitated.
Claims (5)
1. A method for installing chain conveyer includes such steps as sequentially connecting drive unit, upper horizontal segment, vertical segment, lower horizontal segment and driven unit to form a Z-shaped conveying segment, which includes a cylindrical spliced box, left and right guide rails fixed to said box, left and right drive chain wheels arranged on drive unit, left and right driven chain wheels arranged on driven unit, turning chain wheels at the turning positions of vertical segment, upper horizontal segment and lower horizontal segment, drive chains passing around the turning chain wheels, hanging axles with hopper, rollers rolling on guide rails, and rollers fixed to the base of upper box and lower horizontal segment, The box location of lower horizontal segment is fixed on box base down, and the box location of vertical segment is fixed in vertical frame, characterized by includes following step:
a. positioning and fixing a lower corner box body connected with a box body of a vertical section in a lower horizontal section box body on a lower box body base, connecting the lower horizontal section box body with the lower corner box body, fixing the lower horizontal section box body on the lower box body base, connecting a driven part box body with the lower horizontal section box body, and fixing the driven part box body on the lower box body base;
b. the vertical section box body is lifted by a crane and then is placed into a vertical frame for central positioning, the central positioning error of the vertical section box body is ensured to be smaller than an allowable value, then the vertical section box body is connected with a lower corner box body and is fixed with the vertical frame, a plurality of positioning components which are arranged at intervals along the height direction are arranged on the vertical frame, each positioning component comprises a positioning block arranged on four inner sides of the vertical frame and an adjusting rod connected with the positioning block, the inner end surface of each positioning block is attached to the outer surface of the box body, a spherical rotating cavity is arranged in each positioning block, the outer end surface of each positioning block is provided with a circular through hole penetrating through the inner end surface and a rectangular mounting hole with two opposite width inner side surfaces and two opposite length inner side surfaces, the centers of the circular through hole and the mounting hole are positioned on a normal line passing through the ball center of the rotating cavity on the outer end surface of each positioning, a rotatable adjusting block is arranged in the rotating cavity, the adjusting block comprises two parallel round surfaces and an annular spherical surface which is connected between the two round surfaces and matched with the rotating cavity, so that the adjusting block is in a spherical frustum shape, a connecting through hole is formed in the center of the end surface of the adjusting block, the thickness of the adjusting block is smaller than the width of the mounting hole, one end of the adjusting rod is inserted into the connecting through hole, the other end of the adjusting rod extends out of the round through hole and is in threaded connection with the vertical frame, and an annular shaft shoulder which is abutted against the adjusting block is arranged on the adjusting rod in the rotating;
c. one end of an upper corner box body connected with the box body of the vertical section in the upper horizontal section box body is butted and positioned with the box body of the vertical section, the other end is positioned and fixed on a base of the upper box body, and then the upper corner box body is fixedly connected with the box body of the vertical section;
d. the upper horizontal section box body is connected with the upper corner box body and then fixed on the upper box body base, and then the driving part box body is connected with the upper horizontal section box body and then fixed on the upper box body base;
e. and a driving chain connected with a hopper is arranged in the box body and sequentially wound on the driving chain wheel, the steering chain wheel and the driven chain wheel.
2. A method for mounting a chain conveyor as claimed in claim 1, wherein the two driving sprockets and the two driven sprockets are coaxially connected by a synchronizing shaft, respectively, and a vertical height error Δ H between the left and right driving sprockets and the left and right driven sprockets needs to be detected after the driving part and the driven part are fixed, the method comprising:
the leveling instrument is arranged in the direction of an extension line of the side axis of the synchronizing shaft, then a measuring staff is vertically arranged at the upper side of the part, exposed out of the bearing seat, of the two ends of the synchronizing shaft in sequence, the cross wire of a telescope of the leveling instrument is aligned to the scale marks of the measuring staff, the scale marks corresponding to the two measuring staff are recorded respectively, and the difference value of the two scale marks is the height error delta H.
3. The method as claimed in claim 1, wherein the adjusting rod inserted into the connecting through hole has a truncated cone shape with a taper of 1/40-1/30, a blind threaded hole is formed in the axis of the end surface of the adjusting rod, and a cross-shaped partition slit extending to the conical surface of the adjusting rod is formed, the depth of the partition slit is greater than that of the blind threaded hole, a conical counter bore is formed at the opening of the blind threaded hole, a tension screw is screwed into the blind threaded hole, and a truncated cone-shaped tension section fitted into the counter bore is integrally connected to the rear end of the tension screw located in the counter bore.
4. A method of installing a chain conveyor as claimed in claim 1, wherein the outer side of the vertical section of the rectangular cross section is provided with a plurality of sets of measuring units spaced apart in the height direction, the measuring units including measuring projections detachably provided at the central positions on the outer periphery of the vertical section of the rectangular cross section, and reference projections provided at the central positions on the four sides of the upper end of the vertical frame of the rectangular cross section, and in the step b, the error in the centering of the vertical section of the rectangular cross section in the vertical frame is measured by: a weight line is hung in a vertical frame, the upper ends of the weight line are sequentially positioned at four reference convex blocks, a positioning barrel with lubricating oil inside is placed at the bottom of the vertical frame, a heavy hammer of the weight line is suspended and immersed in the lubricating oil of the positioning barrel, when the weight line is stable, the distance L between a measuring convex block on one corresponding side and the weight line is measured, and the difference delta L between the distances L on the two opposite sides is the center positioning error of the vertical section box body.
5. A method of assembling a chain conveyor as in claim 1 wherein in step e, the drive chain is first split into the drive portion and the return portion, and the drive portion and the return portion are split into the horizontal section and the vertical section, respectively, and the respective suspension shafts and the hopper are connected to form respective chain assemblies, and wherein the turning sprockets include an inner turning sprocket for engaging the drive chain of the return portion and an outer turning sprocket for engaging the drive chain of the drive portion; then, vertically hoisting the horizontal section chain assembly of the return part by using a crane to enable the lower end of the chain assembly to enter a box body of a driving part, transversely dragging the lower end of the chain assembly to an inner steering chain wheel of which the front end is lapped at the turning part of the vertical section and the upper horizontal section in the box body of the upper horizontal section by using a tractor, and enabling the rear end of the chain assembly to be wound upwards and meshed on the driving chain wheel; then, vertically hoisting the vertical section chain assembly of the return part by using a crane and placing the vertical section chain assembly into the vertical section box, transversely dragging the lower end of the vertical section chain assembly to the position of a driven sprocket wheel with the front end reaching the driven part in the lower horizontal section box by using a tractor, upwards winding the front end of the chain assembly and meshing the front end of the chain assembly on the driven sprocket wheel in a locked state, and then connecting the upper end of the vertical section chain assembly and the front end of the horizontal section chain assembly of the return part into the chain assembly of the return part; according to the method, the horizontal chain assembly of the driving part is arranged in the box body of the driving part and the upper horizontal section, the vertical chain assembly of the driving part is arranged in the box body of the vertical section, the lower horizontal section and the driven part, the upper end of the vertical chain assembly and the front end of the horizontal chain assembly of the driving part are connected into the chain assembly of the driving part, and the chain assembly of the driving part and the chain assembly of the returning part are respectively connected at the driving chain wheel and the driven chain wheel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111837745B (en) * | 2020-06-17 | 2021-10-29 | 宁波埃格瑞机械制造有限公司 | Guide pulley installation method |
| CN112278727B (en) * | 2020-11-27 | 2022-04-29 | 成都市绿色快线环保科技有限公司 | Vertical polygonal plate airing rack |
| CN112707088B (en) * | 2021-02-07 | 2023-03-28 | 登封市启明轩程控设备有限公司 | Bucket lifting type fine dried noodle feeding machine |
| CN116002288B (en) * | 2023-03-28 | 2023-06-02 | 山西大地宏翔环保科技有限公司 | Cement production weighing and conveying system |
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