阅读说明：本技术 一种混凝土输送滚筒过热保护装置 (Concrete conveying roller overheat protection device ) 是由 沈斌 于 2021-01-20 设计创作，主要内容包括：本发明涉及混凝土技术领域,且公开了一种混凝土输送滚筒过热保护装置,包括滚筒,所述滚筒的内部转动连接有传动轴,滚筒的顶部固定连接有半导体制冷片,滚筒的两侧均开设有流体槽,滚筒的两侧且靠近流体槽的顶部与底部均固定连接有第一电磁铁。该混凝土输送滚筒过热保护装置,通过半导体制冷片带动第二电磁铁运行,再通过第一电磁铁与第一磁块的配合使用,当滚筒内部润滑缺少发热时,半导体制冷片产生电,第二电磁铁通电并带动活动件向右侧移动使电路电压逐渐增大,第一电磁铁通电,从而达到了带动活塞挤压润滑油的效果,有效实现了滚筒过热时自动润滑的作用,有效防止了因润滑不及时使滚筒内部出现剧烈磨损的情况,从而保证了设备的使用寿命。(The invention relates to the technical field of concrete and discloses a concrete conveying roller overheating protection device which comprises a roller, wherein a transmission shaft is rotatably connected inside the roller, a semiconductor refrigerating sheet is fixedly connected to the top of the roller, fluid grooves are formed in two sides of the roller, and first electromagnets are fixedly connected to the two sides of the roller, close to the top and the bottom of the fluid grooves. This concrete feeding roller overheat protection device, drive the operation of second electro-magnet through the semiconductor refrigeration piece, the cooperation of rethread first electro-magnet and first magnetic path is used, when the inside lubrication of cylinder lacks the time of generating heat, the semiconductor refrigeration piece produces electricity, the second electro-magnet circular telegram drives the moving part and makes circuit voltage crescent to the right side removal, first electro-magnet circular telegram, thereby the effect of driving piston extrusion lubricating oil has been reached, self-lubricate's effect when effectively having realized the cylinder overheated, the condition of violent wearing and tearing appears in the inside because of lubricating untimely has effectively been prevented, thereby the life of equipment has been guaranteed.)

1. A concrete conveying roller overheat protection device comprises a roller (1), and is characterized in that: the inner part of the roller (1) is rotatably connected with a transmission shaft (2), the top part of the roller (1) is fixedly connected with a semiconductor refrigerating sheet (3), both sides of the roller (1) are respectively provided with a fluid groove (4), both sides of the roller (1) and the top and the bottom parts of the roller (1) close to the fluid grooves (4) are respectively fixedly connected with a first electromagnet (5), both sides of the roller (1) and the outer sides of the roller (1) close to the fluid grooves (4) are respectively fixedly connected with an oil inlet (6), the inner side of the roller (1) and the outer side of the transmission shaft (2) are respectively fixedly connected with a one-way valve (7), both the top part and the bottom part of the fluid grooves (4) are respectively and movably connected with a piston (8), the inner part of the piston (8) is fixedly connected with a first magnetic block (9), the outer side of the piston (8) is fixedly connected with, the bottom of cylinder (1) just is close to left side fixedly connected with second electro-magnet (12) of activity groove (11), the bottom of cylinder (1) just is close to right side fixedly connected with piezo-resistor (13) of activity groove (11), the inside swing joint of activity groove (11) has moving part (14), the right side fixedly connected with of activity groove (11) is around hindering piece (15), the left side fixedly connected with second magnetic path (16) of moving part (14), the left side fixedly connected with of activity groove (11) and the left side fixedly connected with spring two (17) of moving part (14).

2. A concrete delivery drum overheat protection apparatus as claimed in claim 1 wherein: the shape of semiconductor refrigeration piece (3) is oval and the size of semiconductor refrigeration piece (3) is less than the size of cylinder (1), and the bottom and the top of semiconductor refrigeration piece (3) form the difference in temperature.

3. A concrete delivery drum overheat protection apparatus as claimed in claim 1 wherein: lubricating oil is filled in the fluid groove (4), the main components of the lubricating oil comprise base oil and additives, the magnetism generated on the inner side of the first electromagnet (5) is the same as that on the outer side of the first magnetic block (9), and the size of the first electromagnet (5) is smaller than that of the roller (1).

4. A concrete delivery drum overheat protection apparatus as claimed in claim 1 wherein: the size of the oil inlet (6) is larger than that of an outlet of the one-way valve (7), the inner side of the one-way valve (7) is open-circuit, and the outer side of the one-way valve (7) is a passage.

5. A concrete delivery drum overheat protection apparatus as claimed in claim 1 wherein: the number of the pistons (8) is four, the upper piston (8) and the lower piston (8) are symmetrical with the horizontal center line of the roller (1), the pistons (8) are made of hard rubber materials, and the size of the pistons (8) is smaller than that of the fluid groove (4).

6. A concrete delivery drum overheat protection apparatus as claimed in claim 1 wherein: the first spring (10) is an extension spring, the diameter of the first spring (10) is smaller than the width of the fluid groove (4), the size of the movable groove (11) is smaller than that of the roller (1), and the shape of the movable groove (11) is rectangular.

7. A concrete delivery drum overheat protection apparatus as claimed in claim 1 wherein: the magnetism generated on the right side of the second electromagnet (12) is the same as the magnetism on the left side of the second magnetic block (16), the size of the second electromagnet (12) is smaller than that of the roller (1), the maximum pass voltage of the piezoresistor (13) is smaller than the maximum circuit voltage passing through the resistance winding piece (15), and the piezoresistor (13) is electrically connected with the first electromagnet (5).

8. A concrete delivery drum overheat protection apparatus as claimed in claim 1 wherein: the material of the moving part (14) is hard high-strength material, the right side of the moving part (14) is movably connected with the sliding contact, the outer side of the winding resistance piece (15) is wound with evenly distributed coils, the second spring (17) is an extension spring, and the diameter of the second spring (17) is smaller than the width of the fluid groove (4).

Technical Field

The invention relates to the technical field of concrete, in particular to an overheating protection device for a concrete conveying roller.

Background

Concrete is one of the most important civil engineering materials in the present generation, the concrete uses cement as a cementing material, and sand and stone as aggregates; the cement concrete is obtained by mixing with water (which can contain additives and admixture) according to a certain proportion and stirring, and is widely applied to civil engineering, the overload operation of a conveying device is easily caused in the concrete conveying process, and if the lubrication is not timely, the conveying roller is easily heated.

Because of the too big and difficult stable delivery capacity of control of concrete self weight, the concrete that appears easily piles up the phenomenon together, causes to carry cylinder frictional force too big, causes the lubrication inefficacy for the condition that generates heat appears in the cylinder, if not in time supply emollient, causes the inside condition of scalding of cylinder easily, causes the condition of the violent wearing and tearing of cylinder, makes the life-span greatly reduced of cylinder.

Therefore, we propose a concrete delivery drum overheat protection device to solve the above problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the concrete conveying roller overheating protection device which has the advantage of automatically supplementing the lubricant according to the overheating condition in the friction process, and solves the problem that the roller is severely consumed due to untimely lubricant supplement caused by long-time concrete conveying.

(II) technical scheme

In order to achieve the purpose of automatically replenishing the lubricant according to the overheating condition in the friction process, the invention provides the following technical scheme: a concrete conveying roller overheating protection device comprises a roller, wherein a transmission shaft is rotatably connected inside the roller, a semiconductor refrigerating sheet is fixedly connected to the top of the roller, fluid grooves are formed in two sides of the roller, first electromagnets are fixedly connected to two sides of the roller and the top and the bottom of the roller, which are close to the fluid grooves, oil inlets are fixedly connected to two sides of the roller and the outer side of the roller, which is close to the fluid grooves, a check valve is fixedly connected to the inner side of the roller and the outer side of the roller, which is close to the transmission shaft, a piston is movably connected to the top and the bottom of the fluid grooves, a first magnet is fixedly connected to the inner side of the piston, a first spring is fixedly connected to the outer side of the fluid grooves, a movable groove is formed in the bottom of the roller, a second electromagnet is fixedly connected to the bottom of the roller and the left side of, the inside swing joint in activity groove has the moving part, and the right side fixedly connected with in activity groove is around hindering the piece, the left side fixedly connected with second magnetic path of moving part, the left side fixedly connected with in activity groove and the left side fixedly connected with spring two of moving part.

Preferably, the shape of the semiconductor refrigeration piece is oval, the size of the semiconductor refrigeration piece is smaller than that of the roller, the bottom and the top of the semiconductor refrigeration piece form a temperature difference, and the semiconductor refrigeration piece plays a role in generating electricity.

Preferably, the fluid groove is filled with lubricating oil, the main components of the lubricating oil comprise base oil and additives, the lubricating oil plays a role in lubrication, the magnetism generated on the inner side of the first electromagnet is the same as that on the outer side of the first magnetic block, the size of the first electromagnet is smaller than that of the roller, and the first electromagnet plays a role in magnetic transmission.

Preferably, the size of the oil inlet is larger than that of the outlet of the one-way valve, the oil inlet plays a role in observing and injecting lubricating oil, the inner side of the one-way valve is in an open circuit, the outer side of the one-way valve is in a passage, and the one-way valve plays a role in conveying the lubricating oil.

Preferably, the number of the pistons is four, the upper piston and the lower piston are symmetrical with the horizontal center line of the roller, the pistons are made of hard rubber materials, the size of the pistons is smaller than that of the fluid grooves, and the pistons play a role in extruding lubricating oil.

Preferably, the first spring is an extension spring, the diameter of the first spring is smaller than the width of the fluid groove, the first spring plays a role in contracting the piston towards the inner side, the size of the movable groove is smaller than that of the roller, the shape of the movable groove is rectangular, and the movable groove plays a role in facilitating the movement of the movable part.

Preferably, the magnetism generated on the right side of the second electromagnet is the same as that generated on the left side of the second magnetic block, the size of the second electromagnet is smaller than that of the roller, the second electromagnet plays a role in magnetic transmission, the maximum pass voltage of the piezoresistor is smaller than the maximum circuit voltage passing through the resistance winding piece, the piezoresistor is electrically connected with the first electromagnet, and the piezoresistor plays a role in connecting and disconnecting a circuit.

Preferably, the moving part is made of hard high-strength materials, the right side of the moving part is movably connected with the sliding contact, the sliding contact is in sliding contact with the outer side of the winding resistance part to change circuit voltage, the outer side of the winding resistance part is wound with uniformly distributed coils, the coils play a role in blocking a circuit passage, the second spring is an extension spring, the diameter of the second spring is smaller than the width of the fluid groove, and the second spring plays a role in contracting the moving part towards the left side.

(III) advantageous effects

Compared with the prior art, the invention provides an overheating protection device for a concrete conveying roller, which has the following beneficial effects:

1. this concrete feeding roller overheat protection device, drive the operation of second electro-magnet through the semiconductor refrigeration piece, the cooperation of rethread first electro-magnet and first magnetic path is used, when the inside lubrication of cylinder lacks the time of generating heat, the semiconductor refrigeration piece produces electricity, the second electro-magnet circular telegram drives the moving part and makes circuit voltage crescent to the right side removal, first electro-magnet circular telegram, thereby the effect of driving piston extrusion lubricating oil has been reached, self-lubricate's effect when effectively having realized the cylinder overheated, the condition of violent wearing and tearing appears in the inside because of lubricating untimely has effectively been prevented, thereby the life of equipment has been guaranteed.

2. This concrete feeding roller overheat protection device, use through the cooperation of second electro-magnet and second magnetic path, when the second electro-magnet circular telegram, thereby reached and rejected the second magnetic path and driven the moving part and move to the right side, because of piezo-resistor's the biggest path voltage is less than the biggest circuit voltage through around hindering the piece, when the circuit voltage around hindering the piece is greater than piezo-resistor's path voltage, thereby realize the circular telegram of first electro-magnet, use through the cooperation of piston with check valve, because of the check valve is the one-way oil-out, the inside in negative pressure state of fluid groove when piston extrusion lubricating oil moves to check valve is inside, at this moment the piston can not return.

Drawings

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

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic view of the piston extruding lubricating oil structure of the present invention;

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

In the figure: 1. a drum; 2. a drive shaft; 3. a semiconductor refrigeration sheet; 4. a fluid tank; 5. a first electromagnet; 6. an oil inlet; 7. a one-way valve; 8. a piston; 9. a first magnetic block; 10. a first spring; 11. a movable groove; 12. a second electromagnet; 13. a voltage dependent resistor; 14. a movable member; 15. a resistance winding member; 16. a second magnetic block; 17. and a second spring.

Detailed Description

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

Referring to fig. 1-4, an overheat protection device for a concrete conveying roller comprises a roller 1, a transmission shaft 2 is rotatably connected inside the roller 1, a semiconductor refrigerating sheet 3 is fixedly connected to the top of the roller 1, the semiconductor refrigerating sheet 3 is elliptical, the size of the semiconductor refrigerating sheet 3 is smaller than that of the roller 1, the bottom and the top of the semiconductor refrigerating sheet 3 form a temperature difference, the semiconductor refrigerating sheet 3 plays a role in generating electricity, fluid grooves 4 are formed in both sides of the roller 1, lubricating oil is filled in the fluid grooves 4, the main components of the lubricating oil comprise base oil and additives, the lubricating oil plays a role in lubricating, first electromagnets 5 are fixedly connected to both sides of the roller 1, the top and the bottom of the fluid grooves 4 are both sides of the roller 1, the magnetism generated by the inner sides of the first electromagnets 5 is the same as the magnetism of the outer sides of first magnetic blocks 9, and the size of the first electromagnets 5 is smaller than that, the first electromagnet 5 plays a role in magnetic transmission, oil inlets 6 are fixedly connected to two sides of the roller 1 and the outer sides of the two sides close to the fluid groove 4, the size of each oil inlet 6 is larger than that of an outlet of a one-way valve 7, the oil inlets 6 play a role in observing and injecting lubricating oil, the one-way valves 7 are fixedly connected to the inner side of the roller 1 and the outer side of the two sides close to the transmission shaft 2, the inner sides of the one-way valves 7 are open-circuit, the outer sides of the one-way valves 7 are open-circuit, the one-way valves 7 play a role in conveying lubricating oil, pistons 8 are movably connected to the top and the bottom of the fluid groove 4, the number of the pistons 8 is four, the upper pistons 8 and the lower pistons 8 are symmetrical to the horizontal center line of the roller 1, the pistons 8 are made of hard rubber materials, the size of the pistons 8 is smaller than that of the fluid groove 4, the first spring 10 is an extension spring and the diameter of the first spring 10 is smaller than the width of the fluid groove 4, and the first spring 10 plays a role of contracting the piston 8 inwardly.

The bottom of the roller 1 is provided with a movable groove 11, the size of the movable groove 11 is smaller than that of the roller 1, the shape of the movable groove 11 is rectangular, the movable groove 11 plays a role in facilitating the movement of a movable part 14, the bottom of the roller 1 and the left side close to the movable groove 11 are fixedly connected with a second electromagnet 12, the magnetism generated at the right side of the second electromagnet 12 is the same as the magnetism at the left side of a second magnetic block 16, the size of the second electromagnet 12 is smaller than that of the roller 1, the second electromagnet 12 plays a role in magnetic transmission, the bottom of the roller 1 and the right side close to the movable groove 11 are fixedly connected with a piezoresistor 13, the maximum access voltage of the piezoresistor 13 is smaller than the maximum circuit voltage passing through a winding part 15, the piezoresistor 13 is electrically connected with the first electromagnet 5, the piezoresistor 13 plays a role in connecting and disconnecting a circuit, the movable part 11 is movably connected with the movable part 14, the movable part 14 is made of a hard high-strength material, the sliding contact and the outside sliding contact of winding the piece 15 play the effect of changing the circuit voltage, the right side fixedly connected with of activity groove 11 winds the piece 15 that hinders, the outside winding of the piece 15 has evenly distributed coil, the coil plays the effect of hindering the circuit passageway, the left side fixedly connected with second magnetic path 16 of moving part 14, the left side fixedly connected with of activity groove 11 and the left side fixedly connected with of moving part 14 spring two 17, spring two 17 is extension spring and the diameter of spring two 17 is less than the width of fluid groove 4, spring two 17 plays the effect of contracting moving part 14 to the left side.

The working principle is as follows: when the roller 1 normally works, the internal temperature is at normal temperature, when the internal lubrication of the roller 1 is lack, the heat is generated between the inside of the roller 1 and the transmission shaft 2, so that the temperature difference is formed between the inside of the roller 1 and the outside of the roller 1, at the moment, the semiconductor chilling plate 3 generates electricity, the second electromagnet 12 is electrified and magnetized, the magnetism generated at the right side of the second electromagnet 12 is the same as the magnetism at the left side of the second magnetic block 16, the effect of repelling the second magnetic block 16 is achieved by utilizing the principle that the same magnetism repels each other, the effect of driving the moving part 14 to move towards the right side so as to gradually increase the circuit voltage is effectively realized, because the maximum path voltage of the piezoresistor 13 is less than the maximum circuit voltage passing through the winding part 15, when the circuit voltage of the winding part 15 is greater than the path voltage of the piezoresistor 13, the first electromagnet 5 is electrified and magnetized, because of the magnetism that the inboard production of first electro-magnet 5 is the same with the magnetism in the first magnetic path 9 outside, thereby reached and rejected the effect that first magnetic path 9 moved, the purpose of driving piston 8 extrusion lubricating oil has effectively been realized, because of check valve 7 is the one-way oil-out, the inside of fluid groove 4 is in the negative pressure state when piston 8 extrusion lubricating oil moves to check valve 7 is inside, at this moment piston 8 can not return, thereby realized the inboard automatic lubricated effect to cylinder 1 when overheated of cylinder 1, the condition of violent wearing and tearing appear in the inside of cylinder 1 because of the lubrication untimely has effectively been prevented, thereby the life of equipment has been guaranteed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.