CN210233492U - Upward-type tail cover sealing device for concrete mixing transport vehicle - Google Patents
Upward-type tail cover sealing device for concrete mixing transport vehicle Download PDFInfo
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- CN210233492U CN210233492U CN201920325632.3U CN201920325632U CN210233492U CN 210233492 U CN210233492 U CN 210233492U CN 201920325632 U CN201920325632 U CN 201920325632U CN 210233492 U CN210233492 U CN 210233492U
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Abstract
The utility model discloses a concrete mixing transport vechicle is with rising formula tail-hood sealing device belongs to concrete mixing transport vechicle's tail-hood sealing device's technical field. The rotary sealing assembly is arranged at the outlet flange of the mixing drum, the sealing door is hinged with the rotary sealing assembly, and two ends of an actuating part in the opening and closing driving system are respectively hinged with the cross beam on the material guide part and the feed hopper sealing door to control the opening and closing of the sealing door. When the sealing door needs to be opened, the opening and closing driving system controls the sealing door to be opened upwards, a certain angle is formed between the opening and closing driving system and the end face of the outlet flange, and discharging or in-cylinder cleaning is carried out; when the sealing door needs to be closed, the opening and closing driving system controls the sealing door to be closed and tightly attached to the rotary sealing assembly. The rotary sealing assembly is arranged on the mixing drum, so that the weight of the sealing door is greatly reduced while the sealing effect is ensured, the abrasion of a sealing part is reduced, and the use efficiency is improved. The sealing door is of a full-sealed type, so that the evaporation of water in the materials in the barrel is reduced, and the transportation quality is improved.
Description
Technical Field
The utility model relates to a concrete mixing truck's tail-hood sealing device's technical field especially relates to a concrete mixing truck is with raising up formula tail-hood sealing device.
Background
The churn exit of traditional concrete mixing transport vechicle is mostly uncovered formula, and the car often can lead to materials such as concrete to leak and cause the road surface pollution because the road conditions is not good at the in-process of traveling, through improving, the churn exit has had sealing device, but has heavy, the problem that the serious part of wearing and tearing increases.
The prior related patent (CN107344401A) introduces a hollow shaft rotary sealing manner, which ensures the sealing effect and reduces the abrasion of the sealing parts, improves the reliability of the concrete mixing truck, and reduces the maintenance difficulty, but the components such as the rotary support are mounted on the sealing door, so that the weight of the sealing door is obviously increased, and the hydraulic drive at two sides is required to provide a larger driving force, which is an examination for the hydraulic system, and once the hydraulic system fails, the related measures are not solved; meanwhile, the materials in the mixing drum have more moisture evaporated through the rotary supporting component, and the transportation quality cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects in the prior art, and provides a lifting type tail cover sealing device for a concrete mixing truck and a using method thereof, wherein a single opening and closing driving system is used for controlling the opening and closing of a sealing door, and a slewing bearing is arranged on a mixing drum, thereby achieving the sealing effect and reducing the weight of the sealing door; set up sealing door into the totally enclosed formula, the evaporation of water of the interior material of churn that significantly reduces improves the operating mass of trucd mixer.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a lifting type tail cover sealing device for a concrete mixing and transporting vehicle comprises a mixing drum, a rotary sealing assembly, a tail cover assembly, a material guide assembly and an opening and closing driving system;
an outlet flange is arranged at the tail part of the stirring cylinder, and the rotary sealing assembly is fixedly connected to the outlet flange;
the tail cover assembly comprises a sealing door and a feed hopper; the top of the sealing door is fixedly connected with a connecting rod; the feed hopper is fixedly connected to one side wall of the sealing door; the outer peripheral surface of the feed hopper is fixedly connected with a first connecting lug;
the material guide assembly comprises a support and a material guide piece, and the top end of the support is fixedly connected to the side wall of the material guide piece; the bottom end of the bracket is fixedly connected to a base at the tail part of the vehicle body; a material guide groove is formed in the top surface of the material guide piece, a cross beam is fixedly connected to one side of the top end of the material guide piece, and a second connecting lug is arranged in the middle of the upper surface of the cross beam;
the opening and closing driving system comprises an executive component and a control unit; the control unit is arranged on a base at the tail part of the vehicle body; the control unit drives the executive component to move;
the sealing door is attached to one side wall of the rotary sealing assembly back to the outlet flange; one end of the connecting rod, which is far away from the sealing door, is rotatably connected to the top of the rotary sealing assembly; the rotary sealing assembly is attached in the material guide groove; one end of the executing piece is rotatably connected with the first connecting lug; the other end of the executing piece is rotatably connected with the second connecting lug.
Furthermore, the outlet flange, the rotary sealing assembly, the sealing door and the guide chute are coaxially arranged.
Further, the rotary sealing assembly comprises a rotary support, a 7-shaped base and a 7-shaped bushing; the rotary support is arranged between the base and the 7-shaped bushing; the inner ring of the rotary support is fixedly connected with the outlet flange; the outer ring of the rotary support is fixedly connected with the 7-shaped base; the top of the 7-shaped base is provided with a third connecting lug hinged with the connecting rod; the 7-shaped bushing is fixedly connected to the 7-shaped base.
Furthermore, the longitudinal section of the 7-shaped bushing is of a semicircular structure, and the 7-shaped bushing is provided with an upper part and a lower part; the inner circumferential surface of the 7-shaped bush is coplanar and attached to the inner circumferential surface of the outlet flange.
Furthermore, a sealing gasket is arranged between the 7-shaped bushing at the lower part and the inner ring of the rotary support, and the sealing gasket is fixedly connected to the outer peripheral surface of the inner ring of the 7-shaped bushing.
Further, the peripheral surface of the 7-shaped base is attached to the groove surface of the guide chute; the outer end face of the 7-shaped bushing is attached to one side wall, back to the feed hopper, of the sealing door.
Furthermore, the opening and closing driving system is a hydraulic control system, the executive component is a hydraulic cylinder, and the control unit is a hydraulic control loop; the hydraulic control loop comprises a motor, a hydraulic pump, a first electromagnetic directional valve, a hydraulic lock, a first stop valve and an overflow valve; an output shaft of the motor is connected with a rotating shaft of a hydraulic pump through a coupler, and an oil outlet of the hydraulic pump is communicated with an oil inlet of the first electromagnetic directional valve; the first electromagnetic directional valve is communicated with the hydraulic cylinder through a first oil pipe and a second oil pipe; the first oil pipe is communicated with an oil inlet of the hydraulic cylinder, the second oil pipe is communicated with an oil outlet of the hydraulic cylinder, and the first one-way throttle valve is arranged on each of the first oil pipe and the second oil pipe; the hydraulic lock is communicated with the two working oil ports of the first electromagnetic directional valve in parallel through oil pipes; the oil inlet of the first stop valve is communicated with the oil outlet of the hydraulic cylinder; the oil outlet of the first stop valve is communicated with the oil inlet of the hydraulic cylinder; an oil inlet of the overflow valve is communicated with the hydraulic pump through an oil pipe; and the oil outlet of the overflow valve is communicated with the oil tank through an oil pipe.
Furthermore, the opening and closing driving system is an air pressure control system, the executive component is an air cylinder, and the control unit is an air pressure control loop; the air pressure control loop comprises an air source device, an exhaust device, a second electromagnetic directional valve and a second stop valve; the air source device and the exhaust device are respectively communicated with an air inlet and an air outlet of the second electromagnetic directional valve through air pipes; the second electromagnetic directional valve is respectively communicated with the air cylinder through a first air pipe and a second air pipe; the first air pipe is communicated with an air inlet of the air cylinder, the second air pipe is communicated with an air outlet of the air cylinder, and the first air pipe and the second air pipe are both provided with a second one-way throttle valve; the air outlet of the second stop valve is communicated with the air inlet of the air cylinder through an air pipe; and the air inlet of the second stop valve is communicated with the air outlet of the air cylinder through an air pipe.
Compared with the prior art, the utility model discloses possess following beneficial effect:
(1) the baffle box has been seted up to the top surface of guide, and the baffle box closely laminates with the outer peripheral face of 7 shape bases, and the baffle box provides installation face and strong point for 7 shape bases, reduces the holding power of the rotary seal subassembly that the churn bore, prevents that the rotary seal subassembly from receiving the skew to appear between gravity influence and the outlet flange, and the while greatly reduced maintenance degree of difficulty has effectively guaranteed sealed effect, improves the conveying efficiency of trucd mixer.
(2)7 shape base and 7 shape bushes constitute the casing protection gyration and support, and the longitudinal section of 7 shape bushes is semi-circular structure, and two about 7 shape bushes are equipped with, and optionally change when wearing and tearing are uneven has improved the rate of utilization of 7 type bushes, effectively practices thrift manufacturing cost. The inner peripheral surface of the 7-shaped bush and the inner peripheral surface of the outlet flange are coplanar and attached, so that the excellent working environment of the rotary support is effectively ensured.
(3) The outer end face of the 7-shaped lining is attached to one side wall, back to the feed hopper, of the sealing door, so that the concrete in the mixing drum is completely sealed, the moisture loss is greatly reduced, and the transportation quality is improved.
(4) A cross beam is fixedly connected to one side of the top end of the material guide piece, a second connecting lug is arranged in the middle of the upper surface of the cross beam and provides a rotary supporting point for the executing piece, a third connecting lug is fixedly connected to the top of the 7-shaped base and provides another rotary supporting point for the executing piece, and the sealing door is closed under the combined action of the self-swinging and acting force of the executing piece and the self-gravity of the sealing door; when the churn need be opened, can be through the self swing of executive component and effort and then raise upward and open, because sealing door only is connected with the feeder hopper, the effort of greatly reduced executive component reduces the bearing capacity of 7 shape bases simultaneously, improves the conveying efficiency of trucd mixer.
Drawings
Fig. 1 is an exploded view of the overall structure of the present invention;
fig. 2 is a schematic view of the overall structure of the present invention;
fig. 3 is a view a of fig. 2 according to the present invention;
FIG. 4 is a cross-sectional view of the rotary seal assembly of the present invention;
FIG. 5 is a control unit of the hydraulic control system;
fig. 6 is a control unit of the pneumatic control system.
In the figure: 1. the device comprises a mixing drum, 2, an outlet flange, 3, a sealing door, 4, a feed hopper, 41, a first connecting lug, 5, a connecting rod, 6, a support, 7, a material guiding part, 71, a material guiding groove, 8, a cross beam, 81, a second connecting lug, 9, an actuating part, 10, a control unit, 11, a rotary support, 12 and 7-shaped bases, 121, a third connecting lug, 13 and 7-shaped bushings, 14, a sealing gasket, 15, a motor, 16, a hydraulic pump, 17, a first electromagnetic reversing valve, 18, a hydraulic lock, 19, a first stop valve, 20, an overflow valve, 21, a first one-way throttle valve, 22, an air source device, 23, an exhaust device, 24, a second electromagnetic reversing valve, 25, a second stop valve, 26 and a second one-way throttle valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example 1:
as shown in fig. 1 to 4, a lifting tail cover sealing device for a concrete mixing truck comprises a mixing drum 1, a rotary sealing assembly, a tail cover assembly, a material guide assembly and an opening and closing driving system;
an outlet flange 2 is arranged at the tail part of the mixing drum 1, oval holes convenient to mount are uniformly formed in the outlet flange 2, and a rotary sealing assembly is fixedly connected to the outlet flange 2 in order to reduce the weight of the sealing door 3 and ensure the sealing effect;
the tail cover assembly comprises a sealing door 3 and a feed hopper 4; the top of the sealing door 3 is fixed with a connecting rod 5; the feed hopper 4 is fixedly welded on the rear side wall of the sealing door 3; a first connecting lug 41 is fixedly welded on the peripheral surface of the feed hopper 4;
the material guiding assembly comprises a support 6 and a material guiding piece 7, the top end of the support 6 is welded and fixed on the side wall of the material guiding piece 7, and the bottom end of the support 6 is welded and fixed on a 7-shaped base 12 at the tail of the vehicle body; a material guide groove 71 convenient for discharging concrete is formed in the top surface of the material guide member 7, a cross beam 8 is fixedly welded on the rear side of the top end of the material guide member 7, and a second connecting lug 81 is arranged in the middle of the upper surface of the cross beam 8;
the opening and closing driving system comprises an executive component 9 and a control unit 10; the control unit 10 is arranged on a base 12 of the 7-shaped tail part of the vehicle body; the control unit 10 drives the actuator 9 to move;
sealing door 3 closely laminates with one side that the rotary seal subassembly is back to outlet flange 2, and the one end that connecting rod 5 kept away from sealing door 3 rotates through the round pin axle and connects at rotary seal subassembly's top, and the rotary seal subassembly laminating is in baffle box 71, and baffle box 71 provides locating surface and strong point for rotary seal subassembly, prevents that rotary seal subassembly from receiving the skew to appear between gravity influence and the outlet flange 2, has effectively guaranteed sealed effect. One end of the actuating member 9 is rotatably connected with the first connecting lug 41 through a pin shaft, and the other end of the actuating member 9 is rotatably connected with the second connecting lug 81 through a pin shaft. In the working process, when the mixing drum 1 needs to be sealed, the inner side surface of the sealing door 3 is tightly attached to the outer end surface of the rotary sealing assembly under the combined action of the self gravity of the sealing door 3 and the pulling of the actuating member 9 on the sealing door 3, so that static sealing is realized; when the mixing drum 1 needs to be opened, the executing part 9 pushes the sealing door 3, so that the sealing door 3 is lifted by taking the top of the rotary sealing component as the center, and when the inner side surface of the sealing door 3 and the outlet flange 2 form a certain angle, the material can be discharged or the cleaning work in the drum can be carried out.
Example 2:
as shown in fig. 1 to 4, a lifting tail cover sealing device for a concrete mixing truck comprises a mixing drum 1, a rotary sealing assembly, a tail cover assembly, a material guide assembly and an opening and closing driving system;
an outlet flange 2 is arranged at the tail part of the mixing drum 1, and a rotary sealing assembly is fixedly connected to the outlet flange 2 in order to reduce the weight of the sealing door 3 and ensure the sealing effect;
the tail cover assembly comprises a sealing door 3 and a feed hopper 4; the top of the sealing door 3 is fixed with a connecting rod 5; the feed hopper 4 is fixedly welded on the rear side wall of the sealing door 3; a first connecting lug 41 is fixedly welded on the peripheral surface of the feed hopper 4;
the material guiding assembly comprises a support 6 and a material guiding piece 7, the top end of the support 6 is welded and fixed on the side wall of the material guiding piece 7, and the bottom end of the support 6 is welded and fixed on a 7-shaped base 12 at the tail of the vehicle body; a material guide groove 71 convenient for discharging concrete is formed in the top surface of the material guide member 7, a cross beam 8 is fixedly welded on the rear side of the top end of the material guide member 7, and a second connecting lug 81 is arranged in the middle of the upper surface of the cross beam 8;
the opening and closing driving system comprises an executive component 9 and a control unit 10; the control unit 10 is arranged on a base 12 of the 7-shaped tail part of the vehicle body; the control unit 10 drives the actuator 9 to move;
sealing door 3 closely laminates with one side that the rotary seal subassembly is back to outlet flange 2, and the one end that connecting rod 5 kept away from sealing door 3 rotates through the round pin axle and connects at rotary seal subassembly's top, and the rotary seal subassembly laminating is in baffle box 71, and baffle box 71 provides locating surface and strong point for rotary seal subassembly, prevents that rotary seal subassembly from receiving the skew to appear between gravity influence and the outlet flange 2, has effectively guaranteed sealed effect. One end of the actuating member 9 is rotatably connected with the first connecting lug 41 through a pin shaft, and the other end of the actuating member 9 is rotatably connected with the second connecting lug 81 through a pin shaft. In the working process, when the mixing drum 1 needs to be sealed, the inner side surface of the sealing door 3 is tightly attached to the outer end surface of the rotary sealing assembly under the combined action of the self gravity of the sealing door 3 and the pulling of the actuating member 9 on the sealing door 3, so that static sealing is realized; when the mixing drum 1 needs to be opened, the executing part 9 pushes the sealing door 3, so that the sealing door 3 is lifted by taking the top of the rotary sealing component as the center, and when the inner side surface of the sealing door 3 and the outlet flange 2 form a certain angle, the material can be discharged or the cleaning work in the drum can be carried out.
In the present embodiment, it is preferable that the outlet flange 2, the rotary seal assembly, the sealing door 3 and the material guide chute 71 are coaxially disposed in order to secure excellent sealing effect and structural performance.
In the present embodiment, the rotary seal assembly preferably includes a lightweight thin rotary support 11, a 7-shaped base 12, and a 7-shaped bushing 13. The 7-shaped base 12 and the 7-shaped bush 13 are arranged diagonally and oppositely, the outer ring of the 7-shaped bush is fixed on the outer ring of the 7-shaped base 12 through a bolt, the rotary support 11 is arranged between the 7-shaped base 12 and the 7-shaped bush 13, the 7-shaped base 12 and the 7-shaped bush form a shell to effectively protect the rotary support 11, the inner ring of the rotary support 11 and the outlet flange 2 are fixed into a whole through a bolt, and the outer ring of the rotary support 11 and the 7-shaped base 12 are fixed into a whole through a bolt. The top of the outer peripheral surface of the 7-shaped base 12 is provided with a third connecting lug 121 hinged with the connecting rod 5, and the sealing door 3 rotates by a certain angle by taking the third connecting lug 121 as a center, so that the opening and closing functions are realized. Adopt frivolous type sealing member, can greatly reduced sealing member's wearing and tearing, effectively reduce maintenance frequency.
In this embodiment, preferably, the longitudinal section of the 7-shaped bushing 13 is a semicircular structure, and the 7-shaped bushing 13 is provided with an upper part and a lower part, so that the 7-shaped bushing can be selectively replaced when the abrasion is uneven, the utilization rate of the 7-shaped bushing is improved, and certain material cost is saved. The inner peripheral surface of the 7-shaped bush 13 is coplanar and attached to the inner peripheral surface of the outlet flange 2, so that the excellent working environment of the rotary support 11 is effectively ensured.
In this embodiment, preferably, since the 7-shaped bushing 13 does not rotate with the mixing drum 1, only the lower 7-shaped bushing 13 contacts with the concrete during the discharging process, and only the sealing gasket 14 is arranged between the lower 7-shaped bushing 13 and the inner ring of the rotary support 11, so as to ensure that the sealing gasket 14 deviates to influence the sealing quality, the sealing gasket 14 is fixedly connected to the outer circumferential surface of the inner ring of the 7-shaped bushing 13.
In this embodiment, it is preferable that the outer circumferential surface of the shape base 12 is closely attached to the groove surface of the material guide groove 71 in order to facilitate the installation of the 7-shaped base 12 and to reduce the weight of the outlet flange 7. The outer end face of the 7-shaped bush 13 is attached to one side wall, back to the feed hopper 4, of the sealing door 3, sealing of concrete in the mixing drum 1 is achieved, moisture loss is greatly reduced, and transportation quality is improved.
As shown in fig. 5, in the present embodiment, it is preferable that the opening and closing driving system is a hydraulic control system, the actuator 9 is a hydraulic cylinder, and the control unit 10 is a hydraulic control circuit; the hydraulic control circuit includes an electric motor 15, a hydraulic pump 16, a first electromagnetic directional valve 17, a hydraulic lock 18, a first shut-off valve 19, and an overflow valve 20. An output shaft of the motor 15 is connected with a rotating shaft of the hydraulic pump 16 through a coupler to provide swing power for the hydraulic cylinder, and hydraulic oil is reversed through an oil outlet of the hydraulic pump 16 through a first electromagnetic reversing valve 17; the first electromagnetic directional valve 17 is communicated with the hydraulic cylinder through a first oil pipe and a second oil pipe; the first oil pipe is communicated with an oil inlet of the hydraulic cylinder, the second oil pipe is communicated with an oil outlet of the hydraulic cylinder, first one-way throttle valves 21 are arranged on the first oil pipe and the second oil pipe, and hydraulic oil is regulated by the first one-way throttle valves 21 of the first oil pipe and then enters left/right oil cavities of the hydraulic cylinder to control the hydraulic rod to extend or retract. The hydraulic lock 18 is in parallel communication with two working oil ports of the first electromagnetic directional valve 17 through oil pipes, and when the hydraulic rod extends/retracts to a corresponding position, the hydraulic lock 18 is used for maintaining the oil pressure in a stopped loop, so that the opening/closing state of the sealing door 3 is maintained. The oil inlet of the first stop valve 19 is communicated with the oil outlet of the hydraulic cylinder; the oil outlet of the first stop valve 19 is communicated with the oil inlet of the hydraulic cylinder, the first stop valve 19 is always in a closed state, when the hydraulic circuit has a locking fault, the first stop valve 19 is opened to adjust the hydraulic pressure in the circuit, and the sealing door 3 can be opened through external force. An oil inlet and an oil outlet of the overflow valve 20 are respectively communicated with the hydraulic pump 16 and the oil tank through oil pipes.
The working principle of the embodiment is as follows: when the unloading or the cleaning in the cylinder works, the motor 15 is started to drive the hydraulic pump 16 to rotate to supply oil to the hydraulic control loop, the hydraulic lock 18 is reset at the same time, and the first electromagnetic directional valve 17 controls the hydraulic oil to flow to the first oil pipe; a first one-way throttle valve 21 on the first oil pipe regulates the speed of hydraulic oil in the pipeline, and the hydraulic oil enters a left oil cavity of the hydraulic cylinder; hydraulic oil in the right oil cavity of the hydraulic cylinder flows into the oil tank; the hydraulic rod of the hydraulic cylinder extends outwards under the action of oil pressure, and meanwhile, the hydraulic cylinder pushes the sealing door 3 to rotate upwards by taking the first connecting lug 41 as a center; when the sealing door 3 rotates to a corresponding position, the hydraulic lock 18 stops the loop and the motor 15 until the unloading and the barrel cleaning work are finished; after the cleaning operation is finished, the motor 15 is started again, the hydraulic lock 18 is reset at the same time, and the hydraulic oil is controlled to enter the second oil pipe through the first electromagnetic directional valve 17; then the speed is regulated through a first one-way throttle valve 21 on a second oil pipe, and the speed enters a right oil cavity of the hydraulic cylinder; hydraulic oil in the left oil cavity of the hydraulic cylinder flows into the oil tank; the piston rod of the hydraulic cylinder retracts, meanwhile, the sealing door 3 is driven to rotate downwards by taking the first connecting lug 41 as a center, after the sealing door 3 is tightly attached to the outer end face of the 7-shaped bush 13, the hydraulic lock 18 stops the loop, and meanwhile, the motor 15 is closed; if the hydraulic control system is locked, the first stop valve 19 is opened to regulate the oil pressure in the loop, and then the sealing door 3 is opened through external force.
Example 3:
as shown in fig. 6, unlike embodiment 2, the opening and closing driving system is a pneumatic control system, the actuator 9 is a cylinder, and the control unit 10 is a pneumatic control circuit; the pneumatic control circuit comprises an air supply device 22, an exhaust device 23, a second electromagnetic directional valve 24 and a second stop valve 25. The air supply device 22 provides power for the air cylinder, and the exhaust device 23 is respectively communicated with an air inlet and an air outlet of the second electromagnetic directional valve 24 through air pipes. The second electromagnetic directional valve 24 is communicated with the cylinder through a first air pipe and a second air pipe, and the inflow direction of the compressed gas is controlled through the second electromagnetic directional valve 24. The first air pipe is communicated with an air inlet of the air cylinder, the second air pipe is communicated with an air outlet of the air cylinder, the first air pipe and the second air pipe are respectively provided with a second one-way throttle valve 26, the speed is regulated through a second one-way throttle valve 25, the outward extension/retraction of the piston rod is completed, and the opening/closing of the sealing door 3 is further controlled. The air outlet of the second stop valve 25 is communicated with the air inlet of the air cylinder through an air pipe; the air inlet of the second stop valve 25 is communicated with the air outlet of the air cylinder through an air pipe, the second stop valve 25 is normally in a closed state, when the air pressure loop has a locking fault, the second stop valve 25 is opened to adjust air pressure in the loop, and the sealing door 3 can be opened through external force.
The working principle of the embodiment is as follows: when the discharging or the cleaning in the cylinder works, firstly, the gas source device 22 is started, and compressed gas changes the gas flow direction through the second electromagnetic directional valve 24 and enters the first gas pipe; the compressed air enters the left cavity of the cylinder through the speed regulation of a second one-way throttle valve 26 in the first air pipe; the gas in the right cavity of the cylinder is exhausted to the atmosphere through an exhaust device 23; the piston rod of the cylinder extends outwards under the action of compressed gas, and meanwhile, the cylinder pushes the sealing door 3 to rotate upwards by taking the first connecting lug 41 as a center; when the sealing door 3 rotates to the corresponding position, the air supply device 22 stops supplying air, and the sealing door 3 stops at the position; after the unloading or the cleaning work in the cylinder is finished, the air source device 21 is started again, the compressed air is reversed through the second electromagnetic reversing valve 24, and then enters the right cavity of the air cylinder after being regulated by the second one-way throttle valve 26 in the second air pipe; the gas in the left cavity of the cylinder is exhausted to the atmosphere through an exhaust device 23; the piston rod of the cylinder retracts, meanwhile, the sealing door 3 is driven to rotate downwards by taking the first connecting lug 41 as a center, after the sealing door 3 is tightly attached to the outer end face of the 7-shaped bush 13, the cylinder is locked through a bolt in the cylinder, and meanwhile, the air source device 22 stops working; if the air pressure locking fault occurs, the sealing door 3 is opened through external force after the second stop valve 25 is opened to adjust the air pressure in the loop.
The utility model discloses a system that opens and shuts can adopt electric putter device to replace the atmospheric control system, realizes the operation that opens and shuts of device through the swing of electronic pusher body and the concertina movement of push rod.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. The substitution may be of partial structures, devices, method steps, or may be a complete solution. According to the technical scheme of the utility model and utility model thereof think of and equal replacement or change, all should cover within the scope of protection of the utility model.
Claims (8)
1. The upward tail cover sealing device for the concrete mixing and transporting vehicle is characterized by comprising a mixing drum (1), a rotary sealing assembly, a tail cover assembly, a material guide assembly and an opening and closing driving system;
an outlet flange (2) is arranged at the tail part of the mixing drum (1), and the rotary sealing assembly is fixedly connected to the outlet flange (2);
the tail cover assembly comprises a sealing door (3) and a feed hopper (4); the top of the sealing door (3) is fixedly connected with a connecting rod (5); the feed hopper (4) is fixedly connected to one side wall of the sealing door (3); the outer peripheral surface of the feed hopper (4) is fixedly connected with a first connecting lug (41);
the material guide assembly comprises a support (6) and a material guide piece (7), and the top end of the support (6) is fixedly connected to the side wall of the material guide piece (7); the bottom end of the bracket (6) is fixedly connected to a base at the tail part of the vehicle body; a material guide groove (71) is formed in the top surface of the material guide piece (7), a cross beam (8) is fixedly connected to one side of the top end of the material guide piece (7), and a second connecting lug (81) is arranged in the middle of the upper surface of the cross beam (8);
the opening and closing driving system comprises an executive component (9) and a control unit (10); the control unit (10) is arranged on a base at the tail part of the vehicle body; the control unit (10) drives the executive component (9) to move;
the sealing door (3) is attached to one side wall of the rotary sealing assembly, which is back to the outlet flange (2); one end of the connecting rod (5) far away from the sealing door (3) is rotatably connected to the top of the rotary sealing assembly; the rotary sealing assembly is attached in the material guide groove (71); one end of the actuating piece (9) is rotatably connected with the first connecting lug (41); the other end of the actuating piece (9) is rotatably connected with the second connecting lug (81).
2. The lift-type tail cover sealing device for the concrete mixing truck according to claim 1, wherein the outlet flange (2), the rotary sealing assembly, the sealing door (3) and the material guide chute (71) are coaxially arranged.
3. A concrete mixer truck lift tail cap seal assembly according to claim 1, wherein the rotary seal assembly includes a rotary support (11), a 7-shaped base (12) and a 7-shaped bushing (13); the rotary support (11) is arranged between the 7-shaped base (12) and the 7-shaped bushing (13); the inner ring of the rotary support (11) is fixedly connected with the outlet flange (2); the outer ring of the rotary support (11) is fixedly connected with a 7-shaped base (12); the top of the 7-shaped base (12) is provided with a third connecting lug (121) hinged with the connecting rod (5); the 7-shaped bushing (13) is fixedly connected to the 7-shaped base (12).
4. The lift-type tail cover sealing device for the concrete mixing truck according to claim 3, wherein the longitudinal section of the 7-shaped bushing (13) is of a semicircular structure, and the 7-shaped bushing (13) is provided with an upper part and a lower part; the inner circumferential surface of the 7-shaped bush (13) is coplanar and attached with the inner circumferential surface of the outlet flange (2).
5. A concrete mixer truck nozzle tail sealing device according to claim 4, characterized in that a sealing gasket (14) is arranged between the 7-shaped bushing (13) at the lower part and the inner ring of the rotary support (11), and the sealing gasket (14) is fixedly connected to the outer peripheral surface of the inner ring of the 7-shaped bushing (13).
6. The upward-lifting tail cover sealing device for the concrete mixing and transporting vehicle as claimed in claim 3, characterized in that the outer peripheral surface of the 7-shaped base (12) is attached to the groove surface of the material guide groove (71); the outer end face of the 7-shaped bush (13) is attached to one side wall, back to the feed hopper (4), of the sealing door (3).
7. The upward-lifting tail cover sealing device for the concrete mixing and transporting vehicle as claimed in claim 1, wherein the opening and closing driving system is a hydraulic control system, the actuating member (9) is a hydraulic cylinder, and the control unit (10) is a hydraulic control loop; the hydraulic control loop comprises a motor (15), a hydraulic pump (16), a first electromagnetic directional valve (17), a hydraulic lock (18), a first stop valve (19) and an overflow valve (20); an output shaft of the motor (15) is connected with a rotating shaft of a hydraulic pump (16) through a coupler, and an oil outlet of the hydraulic pump (16) is communicated with an oil inlet of a first electromagnetic directional valve (17); the first electromagnetic directional valve (17) is communicated with the hydraulic cylinder through a first oil pipe and a second oil pipe; the first oil pipe is communicated with an oil inlet of the hydraulic cylinder, the second oil pipe is communicated with an oil outlet of the hydraulic cylinder, and the first one-way throttle valve (21) is arranged on each of the first oil pipe and the second oil pipe; the hydraulic lock (18) is communicated with two working oil ports of the first electromagnetic directional valve (17) in parallel through oil pipes; the oil inlet of the first stop valve (19) is communicated with the oil outlet of the hydraulic cylinder; the oil outlet of the first stop valve (19) is communicated with the oil inlet of the hydraulic cylinder; an oil inlet of the overflow valve (20) is communicated with a hydraulic pump through an oil pipe; the oil outlet of the overflow valve (20) is communicated with the oil tank through an oil pipe.
8. The upward-lifting tail cover sealing device for the concrete mixing and transporting vehicle as recited in claim 1, wherein the opening and closing driving system is a pneumatic control loop, the actuating member (9) is a cylinder, and the control unit (10) is a pneumatic control system; the air pressure control loop comprises an air source device (22), an exhaust device (23), a second electromagnetic directional valve (24) and a second stop valve (25); the air source device (22) and the exhaust device (23) are respectively communicated with an air inlet and an air outlet of the second electromagnetic directional valve (24) through air pipes; the second electromagnetic directional valve (24) is respectively communicated with the cylinder through a first air pipe and a second air pipe; the first air pipe is communicated with an air inlet of the air cylinder, the second air pipe is communicated with an air outlet of the air cylinder, and the first air pipe and the second air pipe are both provided with a second one-way throttle valve (26); the air outlet of the second stop valve (25) is communicated with the air inlet of the air cylinder through an air pipe; and the air inlet of the second stop valve (25) is communicated with the air outlet of the air cylinder through an air pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920325632.3U CN210233492U (en) | 2019-03-15 | 2019-03-15 | Upward-type tail cover sealing device for concrete mixing transport vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920325632.3U CN210233492U (en) | 2019-03-15 | 2019-03-15 | Upward-type tail cover sealing device for concrete mixing transport vehicle |
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| CN210233492U true CN210233492U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920325632.3U Active CN210233492U (en) | 2019-03-15 | 2019-03-15 | Upward-type tail cover sealing device for concrete mixing transport vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732780A (en) * | 2019-03-15 | 2019-05-10 | 安徽星马专用汽车有限公司 | A kind of concrete mixing and transporting car formula tail-hood sealing device and application method of raising up |
| CN111546496A (en) * | 2020-05-13 | 2020-08-18 | 山东精砼工程机械股份有限公司 | Lightweight maintenance-free rotary sealing device |
| CN113442300A (en) * | 2021-07-07 | 2021-09-28 | 安徽佳乐建设机械有限公司 | Sealed tank opening device of concrete mixing and transporting tank car |
-
2019
- 2019-03-15 CN CN201920325632.3U patent/CN210233492U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732780A (en) * | 2019-03-15 | 2019-05-10 | 安徽星马专用汽车有限公司 | A kind of concrete mixing and transporting car formula tail-hood sealing device and application method of raising up |
| CN109732780B (en) * | 2019-03-15 | 2024-07-09 | 安徽星马专用汽车有限公司 | Lifting type tail cover sealing device for concrete mixing transport vehicle and use method |
| CN111546496A (en) * | 2020-05-13 | 2020-08-18 | 山东精砼工程机械股份有限公司 | Lightweight maintenance-free rotary sealing device |
| CN113442300A (en) * | 2021-07-07 | 2021-09-28 | 安徽佳乐建设机械有限公司 | Sealed tank opening device of concrete mixing and transporting tank car |
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