CN113000104A

CN113000104A - Prestressed concrete pipe pile forming device and preparation method thereof

Info

Publication number: CN113000104A
Application number: CN202110290179.9A
Authority: CN
Inventors: 黄海燕; 周勇军; 何亦妹妹
Original assignee: Fujian Dali New Building Materials Technology Co ltd
Current assignee: Fujian Dali New Building Materials Technology Co ltd
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2021-06-22
Anticipated expiration: 2041-03-18
Also published as: CN113000104B

Abstract

The invention discloses a prestressed concrete pipe pile forming device.A lifting device can drive a supporting device to lift and drive a limiting device to move to a limiting position by lifting movement; when the limiting device moves to the limiting position, the supporting device is lifted to be limited by the limiting device; when the supporting device is lifted to be limited, the feeding hopper is lifted to the bent hook structure to be contacted with the central shaft, the lifting device continues to lift until a lifting frame of the lifting device is lifted to be contacted with the bottom of the feeding hopper to drive the feeding hopper to rotate around the central shaft towards the top opening of the crushing cavity, the triggering block is contacted with the pressing piece to enable the triggering block to rotate until the hopper door is opened, and raw materials in the feeding hopper can laterally fall into the top opening of the crushing cavity from the discharging side. The invention also discloses a crushing device for forming the prestressed concrete tubular pile and a preparation method of the prestressed concrete tubular pile. The invention has the advantages of improving the feeding flexibility, convenience and crushing sufficiency in the crushing stage.

Description

Prestressed concrete pipe pile forming device and preparation method thereof

Technical Field

The invention relates to the technical field of concrete pipe piles, in particular to a prestressed concrete pipe pile forming device and a preparation method thereof.

Background

The device that the shaping of prestressed concrete tubular pile relates to mainly includes breaker, mixer, mould, centrifuge. Crushing raw materials such as stones and the like to be crushed in a crusher, mixing the crushed raw materials with other raw materials in a mixer, pouring the mixture into a mould, tensioning reinforcing steel bars to obtain prestress, and forming the prestress concrete pipe pile in a centrifuge to obtain the prestress concrete pipe pile. Naturally, the post-treatment also includes curing, that is, the centrifugally formed prestressed concrete pipe pile is put into a steam curing pool for curing.

The raw material crushing is used as the first process of processing and forming the concrete pipe pile, and the crushing quality and efficiency directly influence the uniformity and the leveling property of subsequent mixing and the tensile quality of mold closing tension.

The crusher in the prior art mostly adopts a jaw crusher or a rolling extrusion mode to crush raw materials. The raw material flows downward while being pressed by the jaw crusher or the crushing roller. As the raw materials are crushed from top to bottom, the feed inlet of the crusher is positioned at a high position. The raw materials need to be conveyed from a low position to a high position and then put into the high position for crushing.

The raw material conveying mode in the prior art comprises a climbing type conveying mode and a vertical lifting type conveying mode. The climbing type conveying mode is the automatic straw feeding and crushing system disclosed in patent application 201420460825.7, and materials are conveyed from a low position to a high position in an inclined conveying mode. The mode is applied to the field of prestressed concrete pipe piles, and has the following technical problems: in order to ensure the conveying stability and prevent the raw materials from rolling off reversely, the inclination angle of the conveying belt is not easy to be too large, so that the conveying route is too long, the occupied area of the device is inevitably large, and the device is not beneficial to being compact; the amount of the raw materials conveyed in unit time is limited by the conveying mode, so that the feeding time is long and the feeding is slow. The vertical lifting conveying mode is a scrap bucket elevator as disclosed in patent 201711044439.4, wherein a lifting mechanism lifts a hopper to a high position, and the hopper is turned over under the action of a driving device so that an opening of the hopper faces downwards for discharging. The mode is applied to the field of prestressed concrete pipe piles, and has the following technical problems: the opening of the hopper faces upwards during feeding, and the opening of the hopper needs to be downwards or at least downwards inclined during discharging to meet the requirement of full discharging, so that the hopper is large in integral overturning angle, easy to generate side turning phenomenon and large in requirement on the pulling force of the driving device; the rotating pair of the hopper is driven to be synchronous with the lifting of the hopper, namely the hopper and the lifting device are actually in a fixed relation, so that the hopper is inconvenient to disassemble and poor in use flexibility; when the hopper is lifted to a high place, the hopper needs to be driven to turn over by the driving device, and the process continuity between lifting and turning needs to be improved.

In the crushing process, the following technical problems also exist: no matter a jaw crusher or a double-roll crusher is adopted, a jaw plate or a crushing double roll realizes the primary crushing function on unit quantity of raw materials, and the raw materials fall downwards, so that partial raw materials are crushed insufficiently, the slurry uniformity of subsequent concrete preparation is poor, and the technical defects of large secondary rework amount are caused.

Disclosure of Invention

The invention aims to solve the technical problem of how to improve the feeding flexibility, convenience and crushing sufficiency in the crushing stage.

The invention solves the technical problems through the following technical means: a crushing device for forming a prestressed concrete pipe pile comprises a crushing cavity, a feeding hopper, a lifting device, a limiting device, a supporting device, a central shaft and a pressing device;

the feeding hopper is of a structure with an opening at the top, three sides, a closed bottom surface and an opening at one side, and a bent hook structure with an upward opening is arranged at the bottom of the feeding hopper; a pressing part is arranged at the top of the crushing cavity;

one side of the opening of the feeding hopper is a discharging side, a hopper door is rotatably matched at the upper end of the discharging side, and an elastic body of the hopper door is assembled to enable the hopper door to be closed on the discharging side; the hopper door is also linked with a trigger block;

the supporting device is supported at the bottom of the feeding hopper, and the lifting motion of the lifting device can drive the supporting device to perform lifting motion and drive the limiting device to move to a limiting position; when the limiting device moves to a limiting position, the supporting device is lifted to be limited by the limiting device; when the supporting device is lifted to be limited, the feeding hopper is lifted to the hook structure to be in contact with the central shaft, the lifting device continues to lift until a lifting frame of the lifting device is lifted to be in contact with the bottom of the feeding hopper to drive the feeding hopper to rotate around the central shaft to the top opening of the crushing cavity, the trigger block is in contact with the pressing piece to enable the trigger block to rotate until the hopper door is opened, and raw materials in the feeding hopper can fall into the top opening of the crushing cavity from the discharging side downwards.

Preferably, the crushing cavity is provided with a chute which guides up and down; the supporting device comprises an upright post, a sliding block and a supporting block; the sliding block is connected to the upright post and is in sliding fit with the sliding chute, and the supporting block is arranged on the upright post and can be in contact with the middle area of the bottom of the feeding hopper; the top of the lifting frame is capable of rolling contact with an area of the bottom of the upper hopper remote from the crushing chamber.

Preferably, the limiting device comprises a first limiting rod, a second limiting rod and a limiting elastic part, the upper end of the first limiting rod is hinged with the supporting device, the lower end of the first limiting rod is hinged with the upper end of the second limiting rod, and the lower end of the second limiting rod is in running fit with an adjacent surface of one surface, provided with the sliding groove, in the crushing cavity; the spacing spring is assembled so that the support means is located at the lower end of the crushing chamber;

the lifting device further comprises a fixed limiting block, the fixed limiting block is in contact with the upper end of the second limiting rod, the fixed limiting block can drive the second limiting rod to rotate until the upper end of the second limiting rod is abutted against the side face of the fixed limiting block.

Preferably, the device further comprises a load bearing device and a lifting linkage device; the bearing device is arranged in the crushing cavity, and a bearing plate in the bearing device can be linked with a driving rod in the lifting linkage device; the pushing device pushes down the motion and is used for falling into to from the open-top in broken chamber raw materials on the bearing plate extrude the breakage, pushing device upwards resets the motion can drive the actuating lever swing causes the bearing plate motion.

Preferably, the pressing end of the pressing device comprises an extrusion part, the bottom surface of the extrusion part is provided with an upper bulge, the tip of the upper bulge faces downwards, and the upper bulges are distributed in a matrix; the top surface of the bearing plate is provided with lower bulges, the tips of the lower bulges are upward, and the lower bulges are distributed in a matrix manner;

the projection of the tip of the upper bulge in the vertical direction is superposed with the projection of the corresponding tip of the lower bulge in the vertical direction; or the projection of the tip of the upper protrusion in the vertical direction is staggered with the projection of the tip of the corresponding lower protrusion in the vertical direction, and the plurality of upper protrusions and the plurality of lower protrusions form a structure with staggered canines.

Preferably, the lifting linkage device comprises a driving rod, a first linkage elastic body, a swinging rod, a second linkage elastic body and a limiting block; the connecting end of the swinging rod is in rotating fit with the connecting end of the driving rod, and the first linkage elastic body is assembled to enable the bottom of the driving rod to be in contact with the top of the limiting block; the second linkage elastic body is assembled between the driving rod and the swinging rod, so that part of the top of the swinging rod is contacted with the driving rod;

the downward pressing movement of the downward pressing end of the downward pressing device can be contacted with the top of the free end of the oscillating rod, so that the free end of the oscillating rod swings downward; the pressing end of the pressing device resets upwards to be in contact with the bottom surface of the free end of the swinging rod, and the free end of the driving rod can be driven to rotate upwards to enable the bearing plate to move.

Preferably, the load bearing device further comprises a peripheral frame, the peripheral frame being secured in the crushing chamber; the bearing plate is arranged in a hollow-out area in the middle of the peripheral frame; the inner edges of three sides of the peripheral frame are provided with guide grooves which are communicated with each other; three edges of the bearing plate respectively extend into the corresponding guide grooves, and a gap is formed between the fourth edge of the bearing plate and the fourth edge of the peripheral frame; a spring is arranged at the gap;

the device also comprises a driven rotating shaft, a driven cam, a first driving belt pulley, a first driven belt pulley, a transmission rotating shaft, a first bevel gear and a second bevel gear;

the driven rotating shaft is in rotating fit with the peripheral frame, the driven cam and the first driven belt pulley are arranged on the driven rotating shaft, and the driven cam is in contact with the fourth edge of the bearing plate; the first driving belt pulley and the second bevel gear are both arranged on the transmission rotating shaft, the first bevel gear is coaxial with the driving rod, a first belt is sleeved between the first driving belt pulley and the first driven belt pulley, and the first bevel gear is meshed with the second bevel gear;

or the bearing device also comprises a peripheral frame, and the bearing plate is arranged in a hollow-out area in the middle of the peripheral frame; the inner edges of three sides of the peripheral frame are provided with guide grooves which are communicated with each other; three edges of the bearing plate respectively extend into the corresponding guide grooves, and a gap is formed between the fourth edge of the bearing plate and the fourth edge of the peripheral frame; a spring is arranged at the gap;

the device also comprises a driven rotating shaft, a driven cam, a first driving belt pulley, a first driven belt pulley, a transmission rotating shaft, a first bevel gear, a second bevel gear, a transition rotating shaft, a transition gear and a clutch gear;

the crushing cavity is matched with the transition rotating shaft in a rotating mode, and the first driven belt pulley and the transition gear are arranged on the transition rotating shaft; the driven rotating shaft is in rotating fit with the peripheral frame, the driven cam and the clutch gear are both arranged on the driven rotating shaft, and the driven cam is in contact with the fourth edge of the bearing plate; the first driven belt pulley is arranged on the transition rotating shaft, the transmission rotating shaft is in rotating fit with the crushing cavity, the first driving belt pulley and the second bevel gear are both arranged on the transmission rotating shaft, the first bevel gear is coaxial with the driving rod, and a first belt is sleeved between the first driving belt pulley and the first driven belt pulley; the first bevel gear is meshed with the second bevel gear;

two opposite inner walls in the crushing cavity are provided with linear guide grooves, two opposite sides in the bearing device are respectively in sliding fit with the corresponding linear guide grooves, and the other inner wall of the crushing cavity is provided with a moving outlet communicated with the linear guide grooves; a discharging screw rod is matched in the crushing cavity in a rotating manner, and the bearing device is matched with the discharging screw rod in a rotating manner; the discharging screw rod is rotated to drive the bearing device to move outwards through the moving-out opening, so that the raw materials on the bearing device are blocked in the crushing cavity and fall downwards.

Preferably, an auxiliary rotating shaft is further matched in the crushing cavity in a rotating mode, an auxiliary cam is arranged on the auxiliary rotating shaft, and the auxiliary cam is in contact with the bottom of the bearing plate; still be provided with the second driven pulley in the assistance pivot be provided with the second driving pulley in the transmission pivot the cover is equipped with the second belt between second driving pulley, the second driven pulley.

The invention also discloses a prestressed concrete pipe pile forming device based on the crushing device for forming the prestressed concrete pipe pile, which is characterized by sequentially comprising the crushing device for forming the prestressed concrete pipe pile, a mixing device, a mould and a centrifugal device from first to last according to the process flow.

The invention also discloses a method for preparing the prestressed concrete pipe pile based on the crushing device for forming the prestressed concrete pipe pile, which comprises the following steps:

step one, putting raw materials to be crushed into an upper hopper, and lifting the raw materials to a limiting position of the upper hopper through a lifting device;

step two, continuously lifting, wherein the lifting frame drives the feeding hopper to rotate around the central shaft to incline, the hopper door is opened, and the raw materials to be crushed fall into the crushing cavity;

thirdly, crushing the raw materials by pressing the pressing end of the pressing device;

step four, putting the crushed raw materials and other raw materials into a mixing device for mixing;

step five, pouring the concrete obtained in the step four into a mould, and tensioning the reinforcing steel bars to obtain prestress;

step six, obtaining the prestressed concrete pipe pile through centrifugal molding

The invention has the advantages that: according to the invention, the lifting device is used as a driving source, and the reciprocating linear motion of the lifting device is utilized to realize the sequential realization of the lifting motion, the overturning unloading motion, the overturning resetting motion and the descending resetting motion of the feeding hopper, so that the practical operation and control are convenient; compared with the climbing type lifting mode in the prior art, the invention can realize the straight up and straight down of the feeding hopper, has small occupied space, can realize the centralized blanking of raw materials and has large blanking amount in unit time; compared with the mode of lifting the hopper in the prior art, the invention does not need to be additionally provided with a driving device for driving the feeding hopper to turn over at a high place, has less power sources, is convenient to operate and control on the machine, can realize the non-fixed installation of the feeding hopper, ensures that the feeding hopper is convenient to disassemble, has high use flexibility, allows the feeding hopper to realize the blanking of raw materials at a smaller rotating angle in the turning and blanking process, and avoids the occurrence of a side turning phenomenon.

The above effects are embodied in particular in that: in the lifting stage, the invention supports the feeding hopper through the supporting device to ensure that the feeding hopper is stably lifted upwards, in the process, the lifting frame is always positioned below the feeding hopper and is not contacted with the feeding hopper, when the feeding hopper is lifted to the bent hook structure and hung on the central shaft from bottom to top, at the moment, the supporting device moves to the position limited by the limiting device, the supporting device is locked, after the lifting device is continuously lifted, because the supporting device is not lifted synchronously any more, and the lifting frame is lifted to contact with the bottom of the feeding hopper, the single side of the feeding hopper is stressed and can rotate around the central shaft to enter a turning and blanking stage, therefore, the matching among the specific structures of the lifting device, the limiting device, the supporting device, the central shaft and the feeding hopper is the key for switching the feeding hopper from lifting to turning blanking only through the lifting motion of the lifting device; in the overturning and blanking stage, the hopper door can be automatically opened along with the overturning of the feeding hopper, so that the raw materials in the feeding hopper can fall from the blanking side rather than from the top opening of the feeding hopper, therefore, the feeding hopper can realize blanking by needing a smaller overturning angle in the overturning and blanking stage, and the characteristic is combined with the combined action of the specific structures of the lifting device, the limiting device, the supporting device, the central shaft and the feeding hopper, so that the key for realizing that the feeding hopper can be directly placed on the lifting device without being fixed on the lifting device and avoiding the rollover during the overturning is realized.

The upper hopper is reset and turned over, and the upper hopper is reset and descended in the same way.

Due to the adoption of the centralized blanking mode of the feeding hopper, the same batch of raw materials needing to be crushed can be crushed for multiple times in a pressing and extruding mode in the crushing stage, and the technical defect of single extrusion crushing of the jaw plates in the prior art is overcome.

In a complete crushing process in a crushing stage, the pressing motion of the pressing device is used for extruding and crushing the raw materials falling onto the bearing plate from the top opening of the crushing cavity, and the bearing plate is stationary at the moment, so that the stable extrusion and crushing of the raw materials by the pressing device and the bearing plate can be ensured; the upward reset motion of the pressing device can drive the driving rod to swing to enable the bearing plate to move, and under the premise that the stability of extrusion crushing is not affected, the raw material after extrusion crushing can be displaced at every time, so that the stress surface of next extrusion crushing changes, the multi-surface homoenergetic of the raw material can be broken, and the effect of crushing is improved.

Further, in some embodiments, the top of the support block is provided with a cotton or rubber mat or other prior art flexible layer to ensure flexible contact with the bottom surface of the upper hopper.

Further, in some embodiments, the hook structure is an elastic hook, such that when the hook structure is hooked on the central shaft, the hook structure is deformed under stress to increase the holding force between the hook structure and the central shaft.

Furthermore, the structure of the limiting device provided by the invention utilizes the lifting motion degree of the fixed limiting block to change the cooperative mode between the limiting device and the fixed limiting block, so that the effect that the supporting device moves or is locked along with the lifting device is achieved, and the limiting device is convenient to operate and control, continuous in action and accurate in motion control.

Furthermore, the inner bottom surface of the feeding hopper is an inclined surface with the height gradually reduced towards the direction of the discharging side, so that the discharging efficiency of the feeding hopper in the overturning discharging process is further improved.

Furthermore, the invention can realize that the bearing plate is relatively static in the stage of crushing by pressing down only through the reciprocating motion of the pressing down end, and the bearing plate is cooperatively realized by shaking in the stage of resetting the pressing down end up and down.

Furthermore, the bearing device is further functionalized, so that the bearing device can be used as a valve after being crushed, the crushed raw materials can be conveniently discharged, and the method for discharging by using the blockage of the crushing cavity has the advantages of high discharging speed and high discharging sufficiency.

Furthermore, the invention realizes the coordination of the lifting motion and the motion of the bearing device, and can realize the coordination of the state that the bearing device enters a raw material accumulation state along with the lifting of the lifting device and the state that the bearing device enters a blanking state along with the downward resetting motion of the lifting device.

Drawings

Fig. 1 is a schematic structural view of a crushing apparatus for forming a prestressed concrete pipe pile according to the present invention.

FIG. 2 is an enlarged view of a portion A of FIG. 1 according to the present invention.

Fig. 3 is a schematic structural diagram of the feeding hopper in a discharging state in the invention.

FIG. 4 is an enlarged view of a portion A of FIG. 3 according to the present invention.

FIG. 5 is a schematic structural view of the sliding block and the sliding groove of the present invention in sliding engagement.

FIG. 6 is an enlarged view of the portion A of FIG. 5 according to the present invention.

Fig. 7 is a schematic structural view of the limiting device in a limiting state in the invention.

Fig. 8 is a schematic structural view of the fixed stopper of the present invention in a state where the top thereof contacts the bottom surface of the upper end of the second stopper rod.

Fig. 9 is a schematic structural view of the fixed limiting block in a state where the side surface of the fixed limiting block contacts with the upper end of the second limiting rod.

Fig. 10 is a schematic structural view of the feeding hopper in the invention.

Fig. 11 is a schematic structural view of a crushing chamber in the present invention from a top view.

Fig. 12 is a schematic structural view of the lifting linkage of the present invention.

Figure 13 is a schematic view of the load bearing device of the present invention.

FIG. 14 is an enlarged view of portion A of FIG. 11 according to the present invention.

Fig. 15 is a schematic structural view of the load-bearing plate in the moving state of the present invention.

Fig. 16 is a schematic structural view of a crushing apparatus for forming a prestressed concrete pipe pile according to the present invention in an operating state.

FIG. 17 is an enlarged view of portion A of FIG. 16 according to the present invention.

Fig. 18 is a schematic structural view of the crushing apparatus for forming a prestressed concrete pipe pile according to the present invention, in which the pressing end is in an upward reset state.

FIG. 19 is an enlarged view of portion A of FIG. 18 according to the present invention.

Fig. 20 is a schematic view of the crushing chamber including a feed opening according to the present invention.

Fig. 21 is a schematic view of the structure of the outer peripheral frame in the state of being disposed in the crushing chamber in the present invention.

FIG. 22 is a schematic structural view of the peripheral frame of the present invention in a state of being engaged with a discharge screw.

FIG. 23 is a schematic view of the structure of the bearing plate in linkage with the driven cam and the auxiliary cam according to the present invention.

FIG. 24 is an enlarged view of portion A of FIG. 23 according to the present invention.

FIG. 25 is a schematic structural view of the present invention with the hoist screw and the discharge screw in linkage.

FIG. 26 is a schematic view of the structure of the bearing plate and the auxiliary cam in the present invention.

Fig. 27 is a schematic structural view of a crushing apparatus for forming a prestressed concrete pipe pile according to the present invention in a plan view.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all 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.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Example 1

As shown in fig. 1 and 2, the embodiment discloses a crushing device for forming a prestressed concrete pipe pile, which comprises a crushing cavity 11, a feeding hopper 12, a lifting device 13, a limiting device 14, a supporting device 15, a central shaft 16, a pressing device 17, a bearing device and a lifting linkage device.

The upper hopper 12 is of a structure with an open top, three sides and a closed bottom, and one side, and a hook structure 125 with an upward opening is fixed at the bottom of the upper hopper 12.

As shown in fig. 3 and 4, the crushing chamber 11 is open at the top, and a pressing member 111 is fixed to the top of the crushing chamber 11.

The open side of the upper hopper 12 is a discharge side 121, and a gate 122 is rotatably fitted to the upper end of the discharge side 121, and a gate elastic body 128 is fitted so that the gate 122 is closed on the discharge side 121. A trigger block 123 is also linked to the hopper door 122.

The supporting device 15 can be supported at the bottom of the feeding hopper 12, the lifting device 13 can drive the supporting device 15 to move in a lifting mode and move to the limiting position in linkage with the limiting device 14, and when the limiting device 14 moves to the limiting position, the supporting device 15 is lifted to be limited by the limiting device 14. When the supporting device 15 is lifted to be limited, the upper hopper 12 is lifted to the hook structure 125 and hung on the central shaft 16 from bottom to top, the lifting device 13 continues to lift until the lifting frame 132 of the lifting device 13 is lifted to contact with the bottom of the upper hopper 12 to drive the upper hopper 12 to rotate around the central shaft 16 facing the top opening of the crushing cavity 11, in the process, the trigger block 123 contacts with the pressing part 111 to drive the trigger block 123 to rotate until the hopper door 122 is opened, and the raw material in the upper hopper 12 can fall into the top opening of the crushing cavity 11 from the opening of the blanking side 121.

The bearing device is arranged in the crushing cavity 11, and a bearing plate in the bearing device is linked with a driving rod in the lifting linkage device. The pressing device 17 performs pressing movement to crush the raw material falling from the top opening of the crushing cavity 11 onto the bearing plate, and the upward resetting movement of the pressing device 17 can drive the driving rod to swing so as to move the bearing plate.

When the crushing device for forming the prestressed concrete pipe pile is used for crushing raw materials, the invention puts the raw materials into the upper hopper 12 from a low position, then drives the lifting device 13, the lifting device 13 lifts to drive the supporting device 15 supporting the upper hopper 12 to lift, the lifting frame 132 is lifted synchronously and is always positioned below the upper hopper 12 until the supporting device 15 is lifted to the position limited by the limiting device 14, at the moment, the supporting device 15 is limited by the limiting device 14, the position is relatively fixed, the hook structure 125 of the upper hopper 12 is hung from bottom to top, namely sleeved on the central shaft 16, the lifting device 13 is continuously driven, after the lifting frame 132 is lifted to be contacted with the bottom of the upper hopper 12, the upper hopper 12 rotates under the action force of the lifting device 13 of the lifting frame 132 by taking the central shaft 16 as a winding point and is separated from the supporting device 15, when the upper hopper 12 rotates until the trigger block 123 is contacted with the pressing piece 111, after the trigger block 123 rotates and is pressed by the pressing member 111, the rotation causes the hopper door 122 to open, and the raw material in the feeding hopper 12 falls from the opening of the discharging side 121 downwards into the top opening of the crushing cavity 11 and onto the bearing plate in the bearing device. After the raw material in the upper hopper 12 falls down, in the process of driving the lifting device 13 to return, firstly, the upper hopper 12 returns and rotates around the central shaft 16 along with the downward returning movement of the lifting frame 132 under the action of gravity, the trigger block 123 and the pressing part 111 are separated from each other until the bottom of the upper hopper 12 is supported on the limiting device 14 again, and meanwhile, the hopper door 122 is closed on the blanking side 121 again under the returning action of the hopper door elastic body 128; the lifting device 13 continues to move downwards to drive the supporting device 15 and the feeding hopper 12 to move synchronously to the initial position, and the feeding and discharging and resetting operations of the feeding hopper 12 are completed once. And in the crushing stage, through starting the pushing device 17, the pushing motion of the pushing device 17 and the static bearing plate in the bearing device act together to provide extrusion force for the raw material in the bearing device, so that the raw material is crushed, the pushing device is linked with the driving rod in the lifting linkage device in the upward resetting process to cause the driving rod to swing and link the bearing plate to move, the raw material is displaced on the moving bearing plate 181, the contact position of the raw material and the bearing plate changes, when the pushing motion of the pushing device 17 is performed again, the bearing plate is in the static state again, secondary extrusion crushing is realized, and the process is repeated for many times to realize the multiple extrusion crushing of the raw material.

In some embodiments, as shown in fig. 1, a discharge opening is provided at the lower end or bottom of the crushing chamber 11, and a discharge valve 118 is pivotally connected to the discharge opening, and the discharge valve 118 can be closed on the discharge opening. The crushed material falling to the bottom of the crushing chamber 11 is removed by opening the discharge valve 118.

As shown in fig. 1, in some embodiments, a flow guide pipe 1002 is disposed at the top of the crushing chamber 11, and the raw material falling from the discharging side 121 of the feeding hopper 12 passes through the flow guide pipe 1002 and falls onto the bearing plate 181.

As shown in fig. 3, in some embodiments, the lifting device 13 of the present invention further comprises a lifting element 131, and the lifting element 131 comprises a lifting screw rod, which is vertically disposed and rotatably engaged with the frame.

As shown in fig. 2, 5 and 6, in some embodiments, the supporting device 15 includes a supporting block 151, a column 152 and a sliding block 153. The crushing chamber 11 is provided with a slide groove 112 for guiding up and down, a slide block 153 is slidably fitted to the slide groove 112, an upright column 152 is connected between the slide block 153 and a support block 151, and the support block 151 can be supported in the middle region of the bottom of the upper hopper 12.

As shown in fig. 7, a guide rod 154 is further included, the guide rod 154 may be fixed on the rack, and the sliding block 153 is sleeved on the guide rod 154 and is slidably engaged with the guide rod 154 in the vertical direction.

As shown in fig. 7, in some embodiments, the position-limiting device 14 includes a first position-limiting rod 141, a second position-limiting rod 142, and a position-limiting elastic element 143, wherein an upper end of the first position-limiting rod 141 is hinged to the sliding block 153, a lower end of the first position-limiting rod 141 is hinged to an upper end of the second position-limiting rod 142, a lower end of the second position-limiting rod 142 is fixed to a position-limiting rotating shaft 144, and the position-limiting rotating shaft 144 is rotatably engaged with an adjacent surface of the crushing cavity 11, the surface being provided with the sliding slot 112. The restraining spring 143 is fitted so that the support means 15 is located at the lower end of the crushing chamber 11.

As shown in fig. 8 and 9, in some embodiments, the lifting device 13 further includes a fixed stopper 133. The lifting frame 132 and the fixed stopper 133 are fixed on the lifting element 131 of the lifting device 13, and the fixed stopper 133 is located below the lifting frame 132.

As shown in fig. 7 to 9, the fixed stopper 133 contacts with the upper end of the second limiting rod 142, and the lifting motion of the fixed stopper 133 can drive the second limiting rod 142 to rotate until the upper end of the second limiting rod 142 abuts against the side surface of the fixed stopper 133.

When the lifting element 131 is a lifting screw, the lifting frame 132 and the fixed stopper 133 are in threaded fit with the lifting screw, and the lifting screw is driven to rotate by the first motor. Specifically, the fixed end of the first motor can be fixed on the frame, and the output shaft end of the first motor is connected with the lifting screw rod. When the lifting element 131 is a cylinder, the lifting frame 132 and the fixed stopper 133 are fixed to the rod end of the cylinder.

As shown in fig. 5, in some embodiments, the lifting frame 132 is not screwed with the lift screw or fixed to the piston rod end of the cylinder, but is directly fixed to the fixed stopper 133 through the connecting rod 1326.

When the lifting element 131 is lifted, because the top of the fixed stopper 133 contacts with the bottom surface of the upper end of the inclined second stopper rod 142, the upward movement of the fixed stopper 133 drives the upper end of the second stopper rod 142 to rotate upward, and the support device 15 is driven to lift upward by the transmission of the first stopper rod 141 until the upper end of the second stopper rod 142 rotates to be flush with the top of the fixed stopper 133, the fixed stopper 133 continues to lift, and the upper end of the second stopper rod 142 abuts against the side surface of the fixed stopper 133 under the reset action force of the elastic limiting member 143 to stop rotating, so that the stopper 14 enters the limiting position, and the effect of locking the support device 15 is achieved. Similarly, when the fixed stopper 133 descends and resets, after the fixed stopper 133 descends to the top of the fixed stopper and the upper end of the second stopper rod 142, the fixed stopper 133 continues descending, the upper end of the second stopper rod 142 gradually resets and rotates downwards under the reset action force of the elastic limiting piece 143, and the support device 15 is driven to reset downwards through the transmission of the first stopper rod 141.

By adopting the structure of the limiting device 14, the change of the cooperative mode between the limiting device and the fixed limiting block 133 is implemented by utilizing the lifting movement degree of the fixed limiting block 133, the effect that the supporting device 15 moves or is locked along with the lifting device 13 is achieved, and the control is convenient, the action continuity is realized, and the movement control is accurate.

As shown in fig. 10, in some embodiments, the upper end of the door 122 is fixed on the driving rotating shaft 126, the driving rotating shaft 126 is rotatably engaged with the upper end of the discharging side 121, the first rotating gear 127 is fixed on the driving rotating shaft 126, the second rotating gear 129 is fixed on the door rotating shaft 124, the first rotating gear 127 and the second rotating gear 129 are engaged with each other, the door rotating shaft 124 is rotatably engaged with the upper end of the discharging side 121, the end of the door rotating shaft 124 extends out of the discharging side 121, and the trigger block 123 is fixed on the end of the door rotating shaft 124.

The gate elastic body 128 is preferably a gate torsion spring, which is sleeved on the gate rotating shaft 124, and both ends of the gate torsion spring are respectively connected to the trigger block 123 and the feeding hopper 12.

As shown in fig. 7, the limiting elastic member 143 of the present invention is also preferably a limiting torsion spring, the limiting torsion spring is sleeved on the limiting rotation shaft 144, two ends of the limiting torsion spring are respectively connected to the second limiting rod 142 and the crushing cavity 11, and the limiting torsion spring is assembled such that the bottom surface of the upper end of the second limiting rod 142 is lapped on the top of the fixed limiting block 133.

As shown in fig. 5-7, in some embodiments, the lift screw of the present invention is multiple in number, and the lift frame 132 includes a lift frame body 1321 and a support 1322.

The plurality of lifting screw rods are matched with a lifting frame body 1321 together, a support 1322 is fixed on the lifting frame body 1321, and a roller 1323 is installed at the top of the support 1322. The rolling contact between the lifting frame 132 and the area of the bottom of the upper hopper 12 remote from the crushing chamber 11 is achieved by means of rollers 1323.

In some embodiments, as shown in fig. 5, the first light rod 135 is fixed to the frame, and the first light rod 135 is vertically disposed.

When the lifting frame 132 is in threaded engagement with the lifting screw, the lifting frame 132 and the fixed stopper 133 are both sleeved on the first polish rod 135 and are both in sliding engagement with the first polish rod 135.

When the lifting frame 132 is fixed on the fixed stopper 133, the fixed stopper 133 is sleeved on the first polish rod 135 and is in sliding fit with the first polish rod 135.

In some embodiments, a cotton or rubber blanket or other prior art flexible layer is provided on top of support block 151 to provide flexible contact with the bottom surface of upper hopper 12.

In some embodiments, the hook structure 125 is a resilient hook, such that when the hook structure 125 is hooked on the central shaft 16, the hook structure 125 is deformed under a force to increase the holding force between the hook structure 125 and the central shaft 16.

In some embodiments, when the hook structure 125 is a resilient hook, it may also be a rotational fit with the central shaft 16 and the top of the crushing chamber 1.

In some embodiments, the inner bottom surface of the upper hopper 12 is an inclined surface with a height gradually decreasing toward the discharging side 121, so as to further improve the discharging efficiency during the turning-over discharging process of the upper hopper 12.

As shown in fig. 11 and 12, the lifting linkage includes a driving rod 191, a first linkage elastic body 192, a swinging rod 193, a second linkage elastic body 194, and a limit block 195. The limiting block 195 is fixed on the crushing cavity 11, the rotating end of the driving rod 191 is fixed on the driving rod rotating shaft 197, and the driving rod rotating shaft 197 is in rotating fit with the crushing cavity 11. The connecting end of the swing lever 193 is fixed on a swing lever rotating shaft 196, the swing lever rotating shaft 196 is in rotating fit with the connecting end of the driving rod 191, and the first linkage elastic body 192 is assembled between the driving rod 191 and the crushing cavity 11, so that the bottom of the driving rod 191 is contacted with the top of the limiting block 195. The second link elastic body 194 is fitted between the driving lever 191 and the swing lever 193 such that a part of the top of the swing lever 193 contacts the bottom of the boss 1911 of the driving lever 191.

The pushing-down end of the pushing-down device 17 is pushed down to move the extrusion member 171 disposed at the pushing-down end to contact the top of the free end of the swing lever 193, and to move the free end of the swing lever 193 downward. The pressing end of the pressing device 17 moves upward to return to the position where the pressing member 171 contacts the bottom surface of the free end of the swing lever 193, and the free end of the driving rod 191 is driven to rotate upward to cause the bearing plate 181 to swing.

In some embodiments, the first and second linking

elastic bodies

192 and 194 are first and second torsion springs, respectively. The first torsion spring is sleeved on the driving rod rotating shaft 197, two ends of the first torsion spring are respectively connected with the driving rod 191 and a fixed connecting piece connected to the crushing cavity 11, and the driving rod rotating shaft 197 is in rotating fit with the fixed connecting piece on the crushing cavity. The second torsion spring is sleeved on the swing rod rotating shaft 196, and two ends of the second torsion spring are respectively connected with the swing rod 193 and the driving rod 191.

As shown in fig. 11 and 13, the load bearing device further includes a peripheral frame 182, and the peripheral frame 182 may be secured within the crushing chamber.

The bearing plate 181 is disposed in a central hollow area of the peripheral frame 182. The inner edges of three sides of the peripheral frame 182 are provided with guide slots 1821 which are communicated with each other. Three sides of the bearing plate 181 are inserted into the corresponding guide slots 1821, and a gap is formed between the fourth side of the bearing plate 181 and the fourth side of the peripheral frame 182.

As shown in fig. 15, a spring 183 is provided at the gap, and both ends of the spring 183 are connected to the bearing plate 181 and the peripheral frame 182, respectively.

As shown in fig. 11-17, the device further comprises a driven rotating shaft 101, a driven cam 102, a first driving pulley 1031, a first driven pulley 1032, a transmission rotating shaft 104, a first bevel gear 1051 and a second bevel gear 1052.

The driven rotation shaft 101 is rotatably engaged with the peripheral frame 182, the driven cam 102 and the first driven pulley 1032 are fixed to the driven rotation shaft 101, and the driven cam 102 is in contact with the fourth side of the bearing plate 181. The transmission shaft 104 is in running fit with the crushing cavity 11, the first driving pulley 1031 and the second bevel gear 1052 are both fixed on the transmission shaft 104, the first bevel gear 1051 is fixed on the driving rod rotating shaft 197, and a first belt is sleeved between the first driving pulley 1031 and the first driven pulley 1032. The first bevel gear 1051 and the second bevel gear 1052 mesh with each other.

As shown in fig. 19, the hold-down device 17 of the present invention includes a cylinder, preferably a servo cylinder, and a pressing member 171. The pressing end of the pressing device 17 includes a rod end of the cylinder and a pressing member 171 fixed to the rod end.

According to the invention, the pressing end of the pressing device 17 is driven to move downwards to drive the pressing piece 171 to move downwards synchronously, when the pressing piece 171 moves to be contacted with the top of the free end of the swinging rod 193, the free end of the swinging rod 193 rotates downwards around a rotating point due to the rotating match of the connecting end of the swinging rod 193 and the connecting end of the driving rod 191, and the driving rod 191 is still relatively due to the contact of the bottom of the driving rod 191 and the top of the limiting block 195. When the pressing member 171 is pushed down to be disengaged from the free end of the swing lever 193, the swing lever 193 is reset by the reset action of the second interlocking elastic body 194. The pressing end of the pressing means 17 is further pressed down so that the pressing member 171 cooperates with the bearing plate 181 to press the raw material therein. After extrusion, in the process of upward resetting of the pressing end of the pressing device 17, when the extrusion member 171 moves upward to contact with the bottom surface of the free end of the oscillating rod 193, the free end of the oscillating rod 193 can be driven to move upward, and because the local part of the top of the oscillating rod 193 contacts with the bottom of the protrusion 1911 of the driving rod 191, the connecting end of the driving rod 191 can be driven to synchronously rotate upward, the driving rod rotating shaft 197 is driven to rotate, the first bevel gear 1051 and the second bevel gear 1052 are driven to rotate in a reversing manner, the driving rotating shaft 104 is driven to rotate, the driven rotating shaft 101 is driven to rotate through the transmission of the first driving pulley 1031 and the first driven pulley 1032, the driven cam 102 is driven to rotate, so that the linear motion of the bearing plate 181, namely, swinging is realized, and the spring 183 generates deformation in the swinging process of the. When the extrusion member 171 moves upward to be separated from the free end of the swing rod 193, the driving rod 191 is reset under the reset action of the first linkage elastic body 192, and after the driving rod 191 is reset, the bearing plate 181 stops shaking. Thus, one extrusion action is completed.

By adopting the mechanical matching mechanism, the bearing plate 181 is relatively static in the stage of crushing by pressing down only through the reciprocating motion of the pressing down end, and the bearing plate 181 is cooperatively realized by shaking in the stage of resetting the pressing down end up and down.

As shown in fig. 13, further, the outer diameter of the first driving pulley 1031 of the present invention is larger than that of the first driven pulley 1032, so that the technical effect of driving rod 191 swinging a certain angle and the driven cam 102 rotating a plurality of turns can be ensured.

Compared with the prior art, the invention has the following technical effects: according to the invention, the lifting device 13 is used as a main source, the sequence of lifting, overturning and discharging, overturning and resetting and descending and resetting of the feeding hopper 12 can be realized by utilizing the reciprocating linear motion of the lifting device 13, and the actual operation and control are convenient; compared with the climbing type lifting mode in the prior art, the invention can realize the straight-up and straight-down of the feeding hopper 12, has small occupied space, can realize the centralized feeding of raw materials and has large feeding amount in unit time; compared with the mode of lifting the hopper in the prior art, the invention does not need to additionally arrange a driving device for driving the feeding hopper 12 to turn over at a high place, has few power sources, is convenient to operate and control on the machine, can realize the non-fixed installation of the feeding hopper 12, ensures that the feeding hopper 12 is convenient to disassemble and high in use flexibility, allows the feeding hopper 12 to realize the blanking of raw materials by a smaller rotating angle in the turning and blanking process, and avoids the phenomenon of side turning. The above effects are embodied in particular in that: in the lifting stage, the invention supports the upper hopper 12 through the supporting device 15, ensures that the upper hopper 12 is stably lifted upwards, in the process, the lifting frame 132 is always positioned below the upper bin 12 without contacting the upper bin 12, when the upper bin 12 is lifted to its hook structure 125 to hang from the bottom to the top on the central shaft 16, at this time, the supporting device 15 moves to the position limited by the limiting device 14, the supporting device 15 is locked, and after the lifting device 13 continues to lift, since the support means 15 are no longer lifted synchronously, and the lifting frame 132 is lifted into contact with the bottom of the upper hopper 12, the single side of the feeding hopper 12 is stressed and can rotate around the central shaft 16, entering the turning and blanking stage, therefore, the matching among the specific structures of the lifting device 13, the limiting device 14, the supporting device 15, the central shaft 16 and the feeding hopper 12 is the key point that the feeding hopper 12 can be switched from lifting to turning blanking only through the lifting motion of the lifting device 13; in the turning-over blanking stage, because the hopper door 122 of the invention can be automatically opened along with the turning of the feeding hopper 12, so that the raw materials in the feeding hopper 12 can fall from the blanking side 121 instead of from the top opening of the feeding hopper 12, the feeding hopper 12 of the invention can realize blanking by a smaller turning angle in the turning-over blanking stage, and the key point for realizing that the feeding hopper 12 of the invention can be directly placed on the lifting device 13 and prevented from turning over when not fixed on the lifting device 13 is combined with the combined action of the specific structures of the lifting device 13, the limiting device 14, the supporting device 15, the central shaft 16 and the feeding hopper 12. The upper hopper 12 is reset and turned over, and the upper hopper 12 is reset and descended. Due to the adoption of the centralized blanking mode of the feeding hopper 12, the same batch of raw materials needing to be crushed can be crushed for multiple times in a pressing and extruding mode in the crushing stage, and the technical defect of single extrusion crushing of the jaw plates in the prior art is overcome. In a complete crushing process in the crushing stage, the pressing device 17 presses downwards to crush the raw materials falling onto the bearing plate 181 from the top opening of the crushing cavity 11, and the bearing plate 181 is stationary, so that the pressing device 17 and the bearing plate 181 can stably crush the raw materials therein; the upward reset movement of the pressing device 17 can drive the driving rod to swing to enable the bearing plate 181 to move, and under the premise that the stability of extrusion crushing is not affected, the raw material after extrusion crushing can be displaced at every time, so that the stress surface of extrusion crushing at the next time changes, the multi-surface homoenergetic of the raw material can be broken, and the crushing effect is improved.

In conclusion, the invention improves the crushing mode combining turnover blanking and single-batch multiple crushing, and has the technical effects of improving the flexibility, convenience, crushing sufficiency and strong controllability of feeding.

The crushing device for forming the prestressed concrete pipe pile is not limited to crushing and mixing raw materials for processing the concrete pipe pile, and can also crush coatings, crops or other materials needing to be crushed in the prior art.

Example 2

The present embodiment differs from the above embodiments in that: an upper protrusion (not shown) is provided on the bottom surface of the pressing member 171, the tip of the upper protrusion faces downward, and a plurality of upper protrusions are arranged in a matrix. As shown in fig. 13, a lower protrusion 1811 is provided on the top surface of the bearing plate 181, the tip of the lower protrusion 1811 faces upward, and a plurality of lower protrusions 1811 are arranged in a matrix.

The projection of the tip of the upper protrusion in the vertical direction coincides with the projection of the tip of the corresponding lower protrusion 1811 in the vertical direction. Alternatively, the projection of the tip of the upper protrusion in the vertical direction is misaligned with the projection of the tip of the corresponding lower protrusion 1811 in the vertical direction, and the plurality of upper protrusions and the plurality of lower protrusions 1811 form a dog-tooth staggered structure.

Example 3

As shown in fig. 19 to 21, the present embodiment is different from the above-described embodiments in that: the crushing cavity 11 is provided with a feed opening 116, a push-out cylinder 1071 is fixed on one surface of the crushing cavity 11 opposite to the feed opening 116, and the piston rod end of the push-out cylinder 1071 is connected with a push-out plate 1072.

After the crushing is completed, the pushing cylinder 1071 is driven to push the crushed raw material on the bearing plate 181 to the feed opening 116, and the crushed raw material falls from the feed opening 116.

Example 4

As shown in fig. 22, the present embodiment is different from the above-described embodiments in that: two opposite inner walls of the crushing cavity 11 are provided with linear guide grooves (not shown in the figure), two opposite sides of the peripheral frame 182 are respectively in sliding fit with the corresponding linear guide grooves, and the other inner wall of the crushing cavity 11 (the other inner wall is different from the third inner wall of the two inner walls provided with the linear guide grooves) is provided with a moving-out port (not shown in the figure) communicated with the linear guide grooves. A discharging screw rod 1081 is rotatably matched in the crushing cavity 11, and the peripheral frame 182 is rotatably matched with the discharging screw rod 1081. Rotating the discharge screw 1081 can drive the load bearing device to move outward through the outlet, so that the raw material on the load bearing device is blocked in the crushing chamber 11 and falls downward.

As shown in fig. 23, a transition rotating shaft 1082 is also rotatably fitted on the crushing chamber 11, and the first driven pulley 1032 is fixed to the transition rotating shaft 1082 instead of the driven rotating shaft 101. A transition gear 1083 is fixed to the transition shaft 1082 and a clutch gear 1084 is fixed to the driven shaft 101, the clutch gear 1084 translating into engagement with the transition gear 1083 when the load bearing device is restrained in the crushing chamber 11.

After the crushing is finished, the discharging screw rod 1081 is rotated, the discharging screw rod 1081 can be driven to rotate through a second motor, the fixed end of the second motor can be fixed on the rack, the output shaft end of the second motor is connected with the discharging screw rod 1081, so that the load bearing device is moved out towards the moving-out opening, and in the moving-out process, the clutch gear 1084 is separated from the transition gear 1083. The blanking gap between the crushing cavity 11 and the load-bearing device is gradually increased, and the crushed raw materials placed on the load-bearing plate 181 can fall down to the bottom of the crushing cavity 11 through the blanking gap as the load-bearing plate 181 moves out of the moving outlet under the blocking action of the inner wall of the crushing cavity 11 above the moving outlet.

As shown in fig. 1, in some embodiments, a transfer chamber 1001 is provided outside the crushing chamber 11, and the open end of the transfer chamber 1001 communicates with the removal port. When the load bearing device is moved out towards the removal opening, the load bearing device is moved into the interior cavity of the transfer chamber 1001 through the open end of the transfer chamber 1001.

Compared with the feeding mode driven by the air cylinder, the feeding of the crushed raw materials by adopting the mode of the invention has the advantages of rapid feeding and strong feeding sufficiency by further functionalizing the bearing device and enabling the bearing device to be used as a valve after being crushed, thereby facilitating the feeding of the crushed raw materials by utilizing the blocking of the crushing cavity 11.

Example 5

As shown in fig. 25, the present embodiment is different from the above-described embodiments in that: according to the invention, a combined rotating shaft 1091 is rotatably matched on a rack, a second transmission bevel gear 1092 and a first combined belt pulley 1093 are fixed on the combined rotating shaft 1091, a first transmission bevel gear 1094 is fixed on a lifting screw rod, a second combined belt pulley 1095 is fixed on a discharging screw rod 1081, the first transmission bevel gear 1094 and the second transmission bevel gear 1092 are meshed, and a combined belt is sleeved between the first combined belt pulley 1093 and the second combined belt pulley 1095.

When the lifting screw rotates to cause the lifting frame 132 to move upwards, the discharging screw 1081 rotates to cause the bearing device to move towards the crushing cavity 11, and when the lifting screw rotates to cause the lifting frame 132 to move downwards, the discharging screw 1081 rotates to cause the bearing device to move back to the crushing cavity 11.

Therefore, the invention realizes the coordination of the lifting motion and the motion of the bearing device, and can realize the coordination of the state that the bearing device enters a raw material accumulation state along with the lifting of the lifting device 13 and the state that the bearing device enters a blanking state along with the downward resetting motion of the lifting device 13.

As shown in fig. 22, further, a second polish rod 1088 is fixed in the crushing chamber 11, the axial direction of the second polish rod 1088 is consistent with the axial direction of the discharging screw 1081, and the load bearing device is in sliding fit with the second polish rod 1088.

Further, the discharging screw rods 1081 are multiple, each discharging screw rod 1081 is locally fixed with a discharging screw rod belt pulley (not shown in the figure), and a discharging screw rod belt is sleeved between all the discharging screw rod belt pulleys.

Furthermore, two opposite sides of the crushing cavity 11 of the invention are respectively provided with a group of feeding hoppers 12, a lifting device 13, a limiting device 14, a supporting device 15 and a central shaft 16.

Each lifting screw is fixed with a lifting screw belt pulley (not shown in the figure), and a lifting screw belt is sleeved between all the lifting screw belt pulleys or all the lifting screw belt pulleys on the same side, so that linkage of a plurality of lifting screws is realized.

Example 6

As shown in fig. 23, 26 and 27, the present embodiment is different from the above embodiments in that: an auxiliary rotating shaft 10972 is rotatably fitted in the crushing chamber 11, an auxiliary cam 10971 is fixed on the auxiliary rotating shaft 10972, and the auxiliary cam 10971 is in contact with the bottom of the bearing plate 181. A second driven pulley 10973 is further fixed on the auxiliary rotating shaft 10972, a second driving pulley 10974 is fixed on the transmission rotating shaft 104, and a second belt is sleeved between the second driving pulley 10974 and the second driven pulley 10973.

Thus, when the driving shaft 197 rotates to drive the driving shaft 104 to rotate, the rotation of the auxiliary cam 10971 can be realized through the transmission of the second driving pulley 10974 and the second driven pulley 10973, three edges of the bearing plate 181 respectively extend into the corresponding guide slots 1821 relative to the three edges to move up and down, and the fourth edge of the bearing plate synchronously moves up and down, so that the up and down shaking of the bearing plate 181 is realized. The dual movement of shaking up and down and shaking of the bearing plate 181 is achieved.

Of course, the movement of the bearing plate 181 of the present invention may be only shaking and not shaking, and does not include the driven cam 102 and the member for linking the movement of the driven cam 102.

As shown in fig. 26, in some embodiments, the number of the auxiliary shafts 10972 is multiple, each auxiliary shaft 10972 is fixed with an auxiliary shaft pulley 10975, and an auxiliary shaft belt is sleeved between all the auxiliary shaft pulleys 10975.

Example 7

The embodiment discloses a prestressed concrete tubular pile forming device, according to the process flow from first to last order include breaker, mixing arrangement, mould, centrifugal device for the shaping of prestressed concrete tubular pile in proper order. Crushing raw materials such as stones and the like to be crushed in a crusher, mixing the crushed raw materials with other raw materials in a mixer, pouring the mixture into a mould, tensioning reinforcing steel bars to obtain prestress, and forming the prestress concrete pipe pile in a centrifuge to obtain the prestress concrete pipe pile. The mixing device, the die and the centrifugal device of the invention are all the prior art.

Example 8

The embodiment discloses a method for preparing a prestressed concrete pipe pile, which comprises the following steps:

firstly, putting raw materials to be crushed into an upper hopper 12, and lifting the raw materials to a limiting position of the upper hopper by a lifting device 13;

step two, continuously lifting, wherein the lifting frame 132 drives the upper hopper 12 to rotate around the central shaft 16 to incline, the hopper door 122 is opened, and raw materials to be crushed fall onto the bearing plate 181;

thirdly, crushing the raw materials by the downward pressing movement of the downward pressing end of the downward pressing device 17;

step four, putting the crushed raw materials and other raw materials into a mixing device, and stirring and mixing;

and step six, obtaining the prestressed concrete pipe pile through centrifugal molding.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A prestressed concrete pipe pile forming device is characterized by sequentially comprising a crushing device, a mixing device, a mould and a centrifugal device from first to last according to a process flow;

the crushing device comprises a crushing cavity, a feeding hopper, a lifting device, a limiting device, a supporting device, a central shaft and a pressing device; the bottom of the feeding hopper is provided with a bent hook structure with an upward opening; a pressing part is arranged at the top of the crushing cavity; one side of the opening of the feeding hopper is a discharging side, a hopper door is rotatably matched at the upper end of the discharging side, and an elastic body of the hopper door is assembled to enable the hopper door to be closed on the discharging side; the hopper door is also linked with a trigger block; the supporting device is supported at the bottom of the feeding hopper, and the lifting motion of the lifting device can drive the supporting device to perform lifting motion and drive the limiting device to move to a limiting position; when the limiting device moves to a limiting position, the supporting device is lifted to be limited by the limiting device, and the feeding hopper is lifted to be in contact with the central shaft through the hook structure; the lifting device continues to lift and move until a lifting frame of the lifting device is lifted to be in contact with the bottom of the feeding hopper, the feeding hopper can be driven to rotate around the central shaft towards the top opening of the crushing cavity, the trigger block is in contact with the pressing piece to enable the trigger block to rotate until the hopper door is opened, and raw materials in the feeding hopper can fall into the top opening of the crushing cavity from the discharging side downwards.

2. The prestressed concrete pipe pile forming device according to claim 1, wherein a chute which guides up and down is formed on the crushing cavity; the supporting device comprises an upright post, a sliding block and a supporting block; the sliding block is connected to the upright post and is in sliding fit with the sliding chute, and the supporting block is arranged on the upright post and can be in contact with the middle area of the bottom of the feeding hopper; the top of the lifting frame is capable of rolling contact with an area of the bottom of the upper hopper remote from the crushing chamber.

3. The prestressed concrete pipe pile forming device according to claim 2, wherein the limiting device comprises a first limiting rod, a second limiting rod and a limiting elastic part, the upper end of the first limiting rod is hinged with the supporting device, the lower end of the first limiting rod is hinged with the upper end of the second limiting rod, and the lower end of the second limiting rod is in running fit with the crushing cavity; the spacing spring is assembled so that the support means is located at the lower end of the crushing chamber;

4. The prestressed concrete pipe pile forming device according to claim 1, further comprising a load-bearing device and a lifting linkage device;

the bearing device is arranged in the crushing cavity, and a bearing plate in the bearing device can be linked with a driving rod in the lifting linkage device; the pushing device pushes down the motion and is used for falling into to from the open-top in broken chamber raw materials on the bearing plate extrude the breakage, pushing device upwards resets the motion can drive the actuating lever swing causes the bearing plate motion.

5. The prestressed concrete pipe pile forming device according to claim 4, wherein the pressing end of the pressing device comprises an extrusion piece, an upper protrusion is arranged on the bottom surface of the extrusion piece, the tip of the upper protrusion faces downwards, and the upper protrusions are distributed in a matrix; the top surface of the bearing plate is provided with lower bulges, the tips of the lower bulges are upward, and the lower bulges are distributed in a matrix manner;

6. The prestressed concrete pipe pile forming device according to claim 4, wherein the lifting linkage device further comprises a first linkage elastic body, a swinging rod, a second linkage elastic body and a limiting block; the connecting end of the swinging rod is in running fit with the connecting end of the driving rod, and the first linkage elastic body is assembled to enable the bottom of the driving rod to be in contact with the top of the limiting block; the second linkage elastic body is assembled between the driving rod and the swinging rod, so that part of the top of the swinging rod is contacted with part of the bottom of the driving rod;

7. The prestressed concrete pipe pile forming apparatus according to claim 6, wherein said load-bearing means further comprises a peripheral frame; the bearing plate is arranged in a hollow-out area in the middle of the peripheral frame; the inner edges of three sides of the peripheral frame are provided with guide grooves which are communicated with each other; three edges of the bearing plate respectively extend into the corresponding guide grooves, and a gap is formed between the fourth edge of the bearing plate and the fourth edge of the peripheral frame; a spring is arranged at the gap;

the crushing cavity is matched with the transition rotating shaft in a rotating mode, and the first driven belt pulley and the transition gear are arranged on the transition rotating shaft; the driven rotating shaft is in rotating fit with the peripheral frame, the driven cam and the clutch gear are both arranged on the driven rotating shaft, and the driven cam is in contact with the fourth edge of the bearing plate; the first driven belt pulley is arranged on the transition rotating shaft, the transmission rotating shaft is in running fit with the crushing cavity, the first driving belt pulley and the second bevel gear are both arranged on the transmission rotating shaft, the first bevel gear is coaxial with the driving rod, and a first belt is sleeved between the first driving belt pulley and the first driven belt pulley; the first bevel gear is meshed with the second bevel gear;

8. The forming device of the prestressed concrete pipe pile according to claim 7, wherein an auxiliary rotating shaft is further rotatably fitted in the crushing cavity, an auxiliary cam is arranged on the auxiliary rotating shaft, and the auxiliary cam is in contact with the bottom of the bearing plate; still be provided with the second driven pulley in the assistance pivot be provided with the second driving pulley in the transmission pivot the cover is equipped with the second belt between second driving pulley, the second driven pulley.

9. A method for preparing a prestressed concrete pipe pile is characterized by comprising the following steps:

10. A crushing device for forming a prestressed concrete pipe pile comprises a crushing cavity, and is characterized by further comprising a crushing cavity, a feeding hopper, a lifting device, a limiting device, a supporting device, a central shaft and a pressing device;

the bottom of the feeding hopper is provided with a bent hook structure with an upward opening; a pressing part is arranged at the top of the crushing cavity; one side of the opening of the feeding hopper is a discharging side, a hopper door is rotatably matched at the upper end of the discharging side, and an elastic body of the hopper door is assembled to enable the hopper door to be closed on the discharging side; the hopper door is also linked with a trigger block; the supporting device is supported at the bottom of the feeding hopper, and the lifting motion of the lifting device can drive the supporting device to perform lifting motion and drive the limiting device to move to a limiting position; when the limiting device moves to a limiting position, the supporting device is lifted to be limited by the limiting device, and the feeding hopper is lifted to be in contact with the central shaft through the hook structure; the lifting device continues to lift and move until a lifting frame of the lifting device is lifted to be in contact with the bottom of the feeding hopper, the feeding hopper can be driven to rotate around the central shaft towards the top opening of the crushing cavity, the trigger block is in contact with the pressing piece to enable the trigger block to rotate until the hopper door is opened, and raw materials in the feeding hopper can fall into the top opening of the crushing cavity from the discharging side downwards.