CN106738347B - Safety protection device, aggregate intermediate bin and mixing plant - Google Patents
Safety protection device, aggregate intermediate bin and mixing plant Download PDFInfo
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- CN106738347B CN106738347B CN201611165921.9A CN201611165921A CN106738347B CN 106738347 B CN106738347 B CN 106738347B CN 201611165921 A CN201611165921 A CN 201611165921A CN 106738347 B CN106738347 B CN 106738347B
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- fixing plate
- air
- return spring
- intermediate bin
- gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0046—Storage or weighing apparatus for supplying ingredients
- B28C7/0053—Storage containers, e.g. hoppers, silos, bins
- B28C7/0076—Parts or details thereof, e.g. opening, closing or unloading means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0046—Storage or weighing apparatus for supplying ingredients
- B28C7/0053—Storage containers, e.g. hoppers, silos, bins
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- Dispersion Chemistry (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a safety protection device for an aggregate intermediate bin and the aggregate intermediate bin provided with the safety protection device, which comprise at least two air path self-locking assemblies, and can keep the air pressure balance of an air path element in time when sudden abnormalities such as damage of the air path element or non-working of an air compressor occur and the air pressure in the air path element is abnormal, so that the air path element such as an air cylinder and the like are ensured to keep the original working state, a discharge door cannot be automatically opened due to the gravity of aggregate, the phenomenon that the normal work of a stirring main machine is influenced due to the fault of material feeding is avoided, the economic loss can be reduced, and the production efficiency is improved. Furthermore, the pneumatic self-locking device also comprises a mechanical protection device which is combined with the pneumatic self-locking assembly to play a role in permanent double protection.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to a safety protection device and an aggregate intermediate bin and a mixing station provided with the safety protection device.
Background
In order to improve the efficiency of the concrete mixing plant, in the mixing plant in the prior art, an aggregate intermediate bin which has a transition function and is shown in fig. 1 is additionally arranged between an inclined belt conveyor and a mixing main machine, aggregates are conveyed into a bin body 100 of the aggregate intermediate bin through the inclined belt conveyor in advance to be stored, when an air path element 500 of a discharge door 200 on the aggregate intermediate bin, such as an air cylinder, receives a feeding signal from the aggregate intermediate bin to the main machine, an air inlet system shown by an arrow head admits air to drive the discharge door 200 to be opened, and the aggregates are fed into the mixing machine; after the feeding is finished, the gas circuit element 500 obtains a closing signal of the discharge door 200 and drives the discharge door to close, so that the operation is convenient and fast.
However, the discharge door of storehouse in the middle of current aggregate does not mostly set up safety arrangement, the storehouse is in the middle of the aggregate waits for the unloading in-process after the material loading is accomplished, gas circuit component 500 damages probably appears, the air intake system that the arrow point shows damages, the unusual circumstances such as the out-of-operation of power failure air compressor machine, discharge door 200 can be because of the action of gravity of aggregate this moment, and open automatically, throw the material toward stirring host computer built-in accident, cause the vexed machine trouble, influence stirring host computer's normal work, need spend a large amount of manual works and time clearance stirring host computer, and the production efficiency is reduced, and manpower and material.
For solving the safety protection problem of the discharge door of the aggregate intermediate bin, a small part of the existing products are provided with bolts on the discharge door, and the discharge door is blocked by utilizing artificial bolts, so that the safety protection effect is realized. However, this bolt structure is accomplished by manual operation, is working at the concrete mixing plant, and when the unexpected circumstances such as the cylinder damage or the air compressor machine is out of work appeared suddenly, can't prevent effectively in time to unload the unexpected opening of bin gate. How to provide a timely and effective safety protection structure for an aggregate intermediate bin is a problem to be solved urgently at present.
Disclosure of Invention
In view of the above, the invention provides a safety protection device for an aggregate intermediate bin, and the aggregate intermediate bin and a mixing station provided with the safety protection device, so as to solve the technical problem that the accidental opening of a discharge door cannot be effectively prevented in time.
On one hand, the invention provides a safety protection device for an aggregate intermediate bin, which comprises at least two gas path self-locking assemblies for balancing gas path elements of the aggregate intermediate bin, wherein one end of each gas path self-locking assembly is connected with a gas inlet joint of each gas path element, the other end of each gas path self-locking assembly is connected with a gas inlet system of the aggregate intermediate bin, and each gas path self-locking assembly is used for keeping the gas pressure balance of each gas path element when the gas pressure of each gas path element is abnormal.
Further, the gas circuit self-locking assembly comprises an inducing valve, and the inducing valve comprises a first station and a second station;
when the air pressure of the air path element is normal, the inducing valve is positioned at the first station to keep the air path to be conducted;
and when the air pressure of the air path element is abnormal, the inducing valve returns to the second station to keep the air pressure of the air path element balanced.
On the other hand, the invention provides an aggregate intermediate bin which comprises a bin body, a discharge door, a rotating shaft, a swing arm, an air path element and any safety protection device;
the discharge door is connected with the bin body in an openable and closable way through the rotating shaft;
one end of the swing arm is connected with the rotating shaft, the other end of the swing arm is connected with the gas circuit element, and the gas circuit element drives the swing arm to move so as to drive the rotating shaft connected with the swing arm to rotate, so that the discharge door and the bin body are opened and closed.
Furthermore, the aggregate intermediate bin also comprises a mounting seat, a first fixing plate, a second fixing plate and a locking pin locking device;
the mounting seat is arranged on the discharging door, and the first fixing plate is arranged on the discharging door through the mounting seat;
the second fixing plate is arranged on the swing arm;
the locking pin locking device is arranged on the discharging door and can movably lock or separate the first fixing plate and the second fixing plate.
Furthermore, a first through hole is formed in the first fixing plate;
a second through hole corresponding to the first through hole in position is formed in the second fixing plate;
the locking pin locking device comprises a shell, and a return spring and a telescopic rod which are arranged in the shell, wherein one end of the return spring is close to the bottom surface of the shell, and the other end of the return spring is connected with one end of the telescopic rod;
the return spring pushes the telescopic rod to extend out so as to be inserted into the first through hole and the second through hole and lock the first fixing plate and the second fixing plate; or the telescopic rod is retracted to withdraw from the first through hole and the second through hole, so that the first fixing plate and the second fixing plate are separated.
Further, a piston is further arranged between the reset spring and the telescopic rod, and the reset spring is connected with one end of the telescopic rod through the piston.
Further, the edge of the piston is also provided with a sealing element.
Further, the bottom surface of the shell is also provided with a groove or a protrusion, or/and when the shell comprises a piston, one end of the piston, which is close to the return spring, is also provided with a groove or a protrusion, and the return spring is embedded into the groove or clamped with the protrusion.
Further, the telescopic rod is a lock pin.
In another aspect, the invention also provides a mixing plant comprising any of the above aggregate intermediate bins.
The safety protection device comprises at least two air path self-locking assemblies, and can keep the air pressure balance of the air path elements when the air path elements are damaged or the air compressor does not work and the like suddenly and abnormally, so that the air pressure in the air path elements is kept balanced, the air path elements such as an air cylinder and the like are kept in the original working state, a discharge door cannot be automatically opened due to the gravity of aggregates, the normal work of a stirring main machine is prevented from being influenced due to the fault of a stuffy machine caused by mistaken feeding, the economic loss can be reduced, and the production efficiency is improved. Furthermore, the pneumatic self-locking device also comprises a mechanical protection device which is combined with the pneumatic self-locking assembly to play a role in permanent double protection.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of an aggregate intermediate bin in the related art;
FIG. 2 is a schematic structural diagram of the safety protection device of the present invention;
FIG. 3 is a schematic diagram of a safety protection device according to the present invention;
FIG. 4 is a schematic structural view of a mechanical protection device of the aggregate intermediate bin of the present invention;
fig. 5 is a partially enlarged schematic view of the mechanical protection device of the aggregate intermediate bin of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The safety protection device of the preferred embodiment is only used for the aggregate intermediate bin shown in fig. 1 as an example. The aggregate intermediate bin comprises a bin body 100, a discharge door 200, a rotating shaft 300, a swing arm 400 and an air path element 500, wherein the discharge door 200 is connected with the bin body 100 in an openable and closable manner through the rotating shaft 300. One end of the swing arm 400 is connected with the rotating shaft 300, the other end is connected with the air circuit element 500, and the air circuit element 500 drives the swing arm 300 to move so as to drive the rotating shaft 300 connected with the swing arm 400 to rotate, so that the discharge door 200 is opened and closed with the bin body 100 to discharge or store materials. Specifically, the rotating shaft 300 is inserted into the discharge door 200 and connected to the bin body 100 through a flange, so that the rotating shaft 300 can rotatably open the discharge door 200. When the discharge door 200 needs to be opened, the air intake system shown by an arrow in fig. 1 is used for supplying air to drive the air path element 500, for example, the telescopic actuating device in the cylinder drives the swing arm 400 to move so as to drive the rotating shaft 300 to rotate, so that the discharge door 200 is opened; conversely, when it is desired to close the discharge gate 200, the pneumatic element 500 causes the discharge gate 200 to close.
As shown in fig. 2, in order to improve the safety protection performance of the aggregate intermediate bin and avoid the self-opening of the discharge door and the mistaken feeding, a safety protection device 600 (shown by a dotted line frame in fig. 2) is additionally arranged between the gas path element 500 and the air inlet system shown by an arrow. Specifically, this safety arrangement 600, including the gas circuit auto-lock subassembly 610 of the gas circuit component 500 of two at least balanced aggregate intermediate bins, the one end of gas circuit auto-lock subassembly 610 is connected with the air inlet connector of gas circuit component 500, and the other end is connected with the air intake system (arrow shows) that originally directly is connected with gas circuit component 500 lug connection, and when the atmospheric pressure of gas circuit component 500 was unusual, the atmospheric pressure in keeping gas circuit component 500 was balanced.
Traditional aggregate intermediate bin, air intake system is directly connected with gas circuit component 500. However, in this embodiment, the gas path self-locking assembly 610 is additionally arranged between the gas path element 500 and the discharge door, so that sudden abnormalities such as damage of the gas path element 500 or non-operation of the air compressor can occur, when the gas pressure in the gas path element 500 is abnormal, the gas pressure balance of the gas path element 500 can be timely kept, the gas path element 500 can be ensured to be kept in an original working state such as a cylinder, the discharge door 200 cannot be automatically opened due to the gravity of aggregate, the phenomenon that material is fed by mistake to cause a stuffy machine fault and influence the normal work of the stirring host machine can be avoided, the economic. It should be noted that the specific structure of the aggregate intermediate bin illustrated in this embodiment does not limit the specific application range of the safety protection device, and the inventive concept of the present invention can be applied to any aggregate intermediate bin in which the discharge door is driven to open and close by the gas path element.
Specifically, as shown in fig. 3, a safety protection device is shown that includes two air path self-locking assemblies 610. The structure of the air path self-locking assembly 610 and the connection relationship between the air path element 500 and the air intake system will be described in detail below with reference to fig. 3: each air path self-locking assembly 610 comprises an inducing valve 611 and accessories (an air path, a two-way connector, a three-way connector and the like) of the inducing valve 611, the inducing valve 611 comprises two stations, when abnormal conditions such as failure do not occur, the air compressor does not work and the like occur, and the air pressure of the air path element 500 is normal, the inducing valve 611 is located at the first station, namely the position of the Z end shown in fig. 3, the air path is kept conducted, the air path element 500 is controlled by an air inlet system, the telescopic execution device is driven to normally stretch and retract, so that the swing arm 400 and the rotating shaft 300 are driven to normally move. When sudden abnormalities such as cylinder damage and air compressor non-operation occur and the air pressure of the air path element 500 is abnormal, the induction valve 611 automatically returns to the second station, namely the AP station shown in fig. 3, so that the air pressure balance at the two ends of the air path element 500 is maintained, and the abnormal opening of the discharge door 200 caused by cylinder misoperation is avoided.
In the preferred embodiment, the specific structure and connection relationship of the air path self-locking assembly 610 are given, and the safety protection effect is realized through two work stations of the inducing valve 611. The air path is kept to be conducted at the Z end in normal time, and returns to the AP end in abnormal time, so that air pressure balance is ensured, the structure is simple, and the effect is obvious.
Preferably, to avoid that the pneumatic self-locking assembly 610 may only briefly keep the air pressure at the two ends of the air circuit element 500 balanced, it is not possible to avoid malfunction of the air circuit element 500 after a long time. As shown in fig. 4, the aggregate intermediate bin further comprises one or more mechanical safety protection devices. The mechanism includes a mounting bracket 710 provided on the discharge door 200, a first fixing plate 720 fixed to the discharge door by the mounting bracket 710, a second fixing plate 730 provided on the swing arm 400, and a latch locking device 740 provided on the discharge door 200 and shown by a dotted line in fig. 4. The locking pin locking device 740 can movably lock or separate the first fixing plate 720 and the second fixing plate 730 to control whether the swing arm 400 can normally move or not so as to determine whether the discharge door 200 and the swing arm 400 are locked by clamping or not, so that the discharge door 200 cannot be opened at will, and further, the gas circuit self-locking assembly 610 is combined to realize a lasting double safety protection effect.
Referring to fig. 5 (enlarged view of dotted circle in fig. 4), a preferred embodiment of the locking pin locking device 740 for locking with the first fixing plate 720 and the second fixing plate 730 is shown, which is only a preferred example with better locking effect, and any structure capable of locking the first fixing plate 720 and the second fixing plate 730 can embody the spirit of the present invention. Specifically, a first through hole is formed in the first fixing plate 720, and a second through hole corresponding to the first through hole is formed in the second fixing plate 730. The locking pin locking device 740 comprises a housing 741, and a return spring 742 and a telescopic rod 743 which are arranged in the housing 741, wherein one end of the return spring 742 is close to the bottom surface of the housing 741, and the other end of the return spring 742 is connected with one end of the telescopic rod 743, when the air pressure of the air circuit element 500 is abnormal, the abnormal air pressure extends the return spring 742, the return spring 742 pushes the telescopic rod 743 to extend out and insert the first through hole and the second through hole, and the first fixing plate 720 arranged on the discharging door 200 and the second fixing plate 730 arranged on the swing arm 400 are locked to lock the discharging door 200 and the swing arm 400, so as to prevent the discharging door from being opened by mistake; when the air pressure of the air path element 500 is recovered to normal, the return spring 742 is returned by normal air pressure, the expansion link 743 is withdrawn in time to withdraw from the first through hole and the second through hole, and the first fixing plate 720 arranged on the discharge door 200 and the second fixing plate 730 arranged on the swing arm 400 are separated, so that the swing arm 400 can move freely along with the telescopic actuating device of the cylinder, and the discharge door 200 can be opened and closed normally.
More specifically, the locking pin 740 may be fixedly disposed on the discharge door 200 by means of embedding, fastening, welding, or the like. Preferably, the housing 741 of the locking pin 740 has two engaging lugs at two sides thereof for engaging with corresponding engaging tabs of the discharge door 200 to fix the locking pin 740.
More preferably, as shown in fig. 5, a piston 744 is further provided between the return spring 742 and the extendable rod 743, and the return spring 742 is connected to one end of the extendable rod 743 through the piston 744. The piston 744 can balance the driving force of the return spring 742, so that the telescopic rod 743 can be horizontally pushed without any deviation, and the telescopic rod can be smoothly inserted into the first through hole and the second through hole.
More preferably, a seal 745 is provided on the edge of plunger 744, and the seal 745 can seal and protect the return spring 742 and plunger 744 to further improve the service life of the locking pin locking device 740.
More preferably, a recess or a protrusion 746 is further provided on the bottom surface of the housing 741, and the return spring 742 is inserted into the recess or engaged with the protrusion. More preferably, a recess or a protrusion 747 is formed on the piston 744 corresponding to one end connected to the return spring 742, so that the other end of the return spring 742 is inserted into the recess or engaged with the protrusion, thereby ensuring stable installation and accurate return of the return spring 742.
More preferably, the telescopic rod 743 is a lock pin to be locked with the first through hole and the second through hole in a clamping manner more stably, and the safety protection performance of the discharge door 200 is further improved.
In another aspect, the invention also provides a mixing plant comprising any of the above aggregate intermediate bins.
In this embodiment, the above arbitrary aggregate intermediate bin is applied to the mixing plant, and the technical effect thereof corresponds to the effect of the above aggregate intermediate bin, and is not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The aggregate intermediate bin is characterized by comprising a bin body, a discharge door, a rotating shaft, a swing arm, an air channel element, a mounting seat, a first fixing plate, a second fixing plate, a lock pin locking device and a safety protection device;
the discharge door is connected with the bin body in an openable and closable way through the rotating shaft;
one end of the swing arm is connected with the rotating shaft, the other end of the swing arm is connected with the gas circuit element, and the gas circuit element drives the swing arm to move so as to drive the rotating shaft connected with the swing arm to rotate, so that the discharge door is opened and closed with the bin body;
the mounting seat is arranged on the discharging door, the first fixing plate is arranged on the discharging door through the mounting seat, the second fixing plate is arranged on the swing arm, and the locking pin locking device is arranged on the discharging door and can movably lock or separate the first fixing plate and the second fixing plate;
the safety protection device comprises at least two gas path self-locking assemblies for balancing the gas path elements, one end of each gas path self-locking assembly is connected with a gas inlet joint of the gas path element, the other end of each gas path self-locking assembly is connected with a gas inlet system of the aggregate intermediate bin, each gas path self-locking assembly is used for keeping the gas pressure of the gas path element balanced when the gas pressure of the gas path element is abnormal, each gas path self-locking assembly is an induction valve, and each induction valve comprises a first station and a second station;
when the air pressure of the air path element is normal, the inducing valve is positioned at the first station to keep the air path to be conducted;
when the air pressure of the air path element is abnormal, the inducing valve returns to the second station to keep the air pressure of the air path element balanced;
the first fixing plate is provided with a first through hole;
a second through hole corresponding to the first through hole in position is formed in the second fixing plate;
the locking pin locking device comprises a shell, and a return spring and a telescopic rod which are arranged in the shell, wherein one end of the return spring is close to the bottom surface of the shell, and the other end of the return spring is connected with one end of the telescopic rod;
the return spring pushes the telescopic rod to extend out so as to be inserted into the first through hole and the second through hole and lock the first fixing plate and the second fixing plate; or the telescopic rod is retracted to withdraw from the first through hole and the second through hole, so that the first fixing plate and the second fixing plate are separated.
2. The aggregate intermediate bin according to claim 1, wherein a piston is further arranged between the return spring and the telescopic rod, and the return spring is connected with one end of the telescopic rod through the piston.
3. An aggregate intermediate bin according to claim 2, wherein the edge of the piston is further provided with a seal.
4. The aggregate intermediate bin according to claim 1, 2 or 3, wherein a groove or a protrusion is further formed in the bottom surface of the shell, or/and when a piston is included in the shell, a groove or a protrusion is further formed in one end, close to the return spring, of the piston, and the return spring is embedded in the groove or clamped with the protrusion.
5. The aggregate intermediate bin according to claim 1, 2 or 3, wherein the telescopic rod is a locking pin.
6. A mixing plant, characterized in that it comprises an aggregate intermediate bin according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611165921.9A CN106738347B (en) | 2016-12-16 | 2016-12-16 | Safety protection device, aggregate intermediate bin and mixing plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611165921.9A CN106738347B (en) | 2016-12-16 | 2016-12-16 | Safety protection device, aggregate intermediate bin and mixing plant |
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| Publication Number | Publication Date |
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| CN106738347A CN106738347A (en) | 2017-05-31 |
| CN106738347B true CN106738347B (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611165921.9A Active CN106738347B (en) | 2016-12-16 | 2016-12-16 | Safety protection device, aggregate intermediate bin and mixing plant |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110744719A (en) * | 2019-10-28 | 2020-02-04 | 三一汽车制造有限公司 | Storage bin, mixing plant and control method |
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| DE9202854U1 (en) * | 1992-03-04 | 1992-10-01 | Wachter KG Hindelang Baustoffwerk Bautechnik, 87541 Hindelang | Portable silo system for powdered material from the building materials industry |
| CN100999299A (en) * | 2006-12-28 | 2007-07-18 | 长沙中联重工科技发展股份有限公司 | Parallel type inserted-pin mechanism for crane |
| CN201634135U (en) * | 2010-03-17 | 2010-11-17 | 中铁轨道系统集团有限公司 | Bin gate structure of feed bin |
| CN202045751U (en) * | 2011-04-02 | 2011-11-23 | 长沙中联重工科技发展股份有限公司 | Aggregate middle bin and safety protection device for aggregate middle bin of concrete mixing station |
| CN104891339A (en) * | 2015-05-07 | 2015-09-09 | 南京工业职业技术学院 | Adaptive pressure balance control system based on microcontroller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203484962U (en) * | 2013-08-23 | 2014-03-19 | 浙江晨龙锯床股份有限公司 | Cylinder momentary halt accurate positioning device |
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2016
- 2016-12-16 CN CN201611165921.9A patent/CN106738347B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9202854U1 (en) * | 1992-03-04 | 1992-10-01 | Wachter KG Hindelang Baustoffwerk Bautechnik, 87541 Hindelang | Portable silo system for powdered material from the building materials industry |
| CN100999299A (en) * | 2006-12-28 | 2007-07-18 | 长沙中联重工科技发展股份有限公司 | Parallel type inserted-pin mechanism for crane |
| CN201634135U (en) * | 2010-03-17 | 2010-11-17 | 中铁轨道系统集团有限公司 | Bin gate structure of feed bin |
| CN202045751U (en) * | 2011-04-02 | 2011-11-23 | 长沙中联重工科技发展股份有限公司 | Aggregate middle bin and safety protection device for aggregate middle bin of concrete mixing station |
| CN104891339A (en) * | 2015-05-07 | 2015-09-09 | 南京工业职业技术学院 | Adaptive pressure balance control system based on microcontroller |
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