A fully sealed concrete mixer truck and use method thereof

Abstract

The present invention discloses a fully sealed concrete mixer truck and a method for using the same, and belongs to the technical field of mixer trucks. The present invention includes a vehicle body, a mixing drum, an opening and closing mechanism arranged at the rear of the mixing drum; a sealed outer door assembly connected to the opening and closing mechanism; a sealed inner door assembly detachably connected to the sealed outer door assembly; a feed hopper assembly adapted to the sealed outer door assembly from which the sealed inner door assembly is removed and rotatably mounted at the rear of the vehicle body; and an adjustment mechanism arranged on the feed hopper assembly, which is used to adjust the switching of the feed hopper assembly and the sealed outer door assembly from which the sealed inner door assembly is removed to an adapted or separated state. The movement characteristic of the sealed inner and outer door assemblies is that they can rotate with the mixing drum. When transporting concrete, the inner and outer doors fit tightly to the drum under the action of external force, and a completely sealed space is formed by using seals one and two to effectively prevent concrete from overflowing and leaking. When unloading concrete, the outer door is opened under the action of external force, and the concrete inside the drum can be unloaded.

Description

Technical Field

[0001] The invention relates to the technical field of mixer trucks, and in particular to a fully sealed concrete mixer truck and a use method thereof. Background Art

[0002] As my country continues to increase its investment in municipal infrastructure, the market demand for concrete mixer trucks continues to expand. The application scope of mixer trucks is no longer limited to remote construction sites in the wild, but more and more often appears in urban construction sites. However, the problem of urban road pollution caused by concrete mixer trucks is also becoming increasingly prominent. The outlet of the mixing drum of traditional concrete mixer trucks is mostly open, and the vehicle often leaks materials due to vibration and bumps during driving, causing road pollution.

[0003] Existing technical solution: The rear of the mixing drum is open and has no sealing device. The feed hopper is fixed on the vehicle body and is stationary relative to the vehicle body. The mixing drum rotates relative to the vehicle body. Disadvantages:

[0004] 1. During driving, the vehicle often causes material leakage due to vibration and bumps, which causes road pollution;

[0005] 2. If the mixer truck takes a long time to transport or waits for a long time at the construction site, the moisture in the concrete will evaporate a lot, causing the material to dry out and segregate. Summary of the invention

[0006] The purpose of the present invention is to solve the deficiencies in the prior art, and therefore a fully sealed concrete mixer truck and a method of use are proposed. The movement characteristic of the sealed inner and outer door assemblies is that they can rotate with the mixing drum. When transporting concrete, the inner and outer doors fit tightly with the drum under the action of external force, and a completely sealed space is formed by using seals one and two to effectively prevent concrete from overflowing and leaking. When unloading concrete, the outer door opens under the action of external force, and the concrete inside the drum can be unloaded. The telescopic movement of the cylinder drives the feed hopper assembly to rotate back and forth, so that the feed hopper assembly and the mixing drum can be combined and separated. When the mixer truck is transporting concrete, the feed hopper assembly is separated from the mixing drum. When the mixer truck is loaded with concrete, the feed hopper assembly moves forward and is inserted into the inside of the drum to realize the function of loading materials into the inside of the drum.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A fully sealed concrete mixer truck, comprising a vehicle body and a mixing drum, and further comprising:

[0009] An opening and closing mechanism arranged at the rear of the mixing drum;

[0010] A sealed outer door assembly connected to the opening and closing mechanism;

[0011] A sealed inner door assembly detachably connected to the sealed outer door assembly;

[0012] A feed hopper assembly adapted to the sealed outer door assembly from which the sealed inner door assembly is removed and rotatably mounted at the rear of the vehicle body;

[0013] And an adjusting mechanism arranged on the feed hopper assembly is used to adjust the switching of the adaption or separation state between the feed hopper assembly and the sealed outer door assembly after the sealed inner door assembly is removed.

[0014] According to a further preferred embodiment, the opening and closing mechanism includes a flange ring, a base, an electric push rod, a fixing part, a guide rail and a sliding rod, the flange ring is fixedly mounted on the tail of the mixing drum, the base is fixedly mounted on the mixing drum, the electric push rod is rotatably mounted on the base, the output end of the electric push rod is fixedly connected with a fixing part, the fixing part is fixedly mounted on the sealed outer door assembly, the guide rail is provided with a plurality of parts which are circumferentially fixedly mounted on the flange ring at equal intervals, the sliding rod is provided with a plurality of parts which are circumferentially arranged at equal intervals on the sealed outer door assembly, one end of the sliding rod is fixedly mounted on the sealed outer door assembly, the other end passes through the guide rail and is matched and connected with two locking parts, and the two locking parts are located on the side of the guide rail facing away from the sealed outer door assembly.

[0015] According to a further preferred embodiment, the sealed outer door assembly includes: an outer door connected to the opening and closing mechanism, a through hole arranged in the middle of the outer door and compatible with the feed hopper assembly, and a seal 1 arranged on the side of the outer door opposite to the rear end of the mixing drum and coaxially arranged with the outer door, and when the outer door blocks the rear end of the mixing drum, the seal 1 is in a compressed state under the action of the opening and closing mechanism.

[0016] According to a further preferred embodiment, the sealed inner door assembly includes an inner door for sealing the through hole, a second seal arranged on the side of the outer door opposite to the inner door, a plurality of buckles circumferentially arranged at the edge of the inner door, and hooks circumferentially arranged on the outer door and adapted to the corresponding buckles, and the second seal is in a compressed state when the hooks are connected to the buckles.

[0017] In a further preferred embodiment, a groove structure is fixedly installed on the outer door for installing the second seal.

[0018] In a further preferred embodiment, a feed hopper support frame rotatably mounted with the feed hopper assembly is fixedly mounted on the vehicle body.

[0019] In a further preferred embodiment, the regulating mechanism comprises a cylinder, and the cylinder is rotatably mounted on the feed hopper assembly and the output end is rotatably mounted on the vehicle body.

[0020] The present invention also discloses a method for using a fully sealed concrete mixer truck, comprising the following steps:

[0021] Step 1: When loading concrete into the mixing drum, first separate the buckle from the hook, remove the inner door, then retract the piston rod of the cylinder to rotate the feed hopper assembly toward the through hole of the outer door so that it fits with the through hole of the outer door, and then guide the concrete into the mixing drum through the feed hopper assembly;

[0022] Step 2: After the mixing drum is loaded with concrete, the piston rod of the cylinder extends outward to drive the feed hopper assembly to rotate backward, and the feed hopper assembly is separated from the through hole of the outer door. Then the inner door is mounted on the outer door through the buckle and the hook. At this time, the second seal is in a compressed state;

[0023] Step 3: After the mixer truck transports the concrete to the destination, the piston rod of the electric push rod extends outward to drive the outer door to move backward along the guide rail, and then the mixing drum reverses, and the concrete inside the mixing drum is unloaded. After the concrete is completely unloaded, the piston rod of the electric push rod is retracted to move the outer door forward along the guide rail, and finally seal the tail of the mixing drum. At this time, the seal is in a compressed state.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Design a sealed outer door assembly and a sealed inner door assembly. Its movement feature is that it can rotate with the mixing drum. It is designed with seal 1 and seal 2. Seal 1 is driven by the opening and closing mechanism to make the outer door in a compressed state when blocking the tail of the mixing drum. Seal 2 is used to make the outer door and the inner door in a compressed state after the outer door and the inner door are connected. When transporting concrete, the inner door and the outer door are tightly fitted with the mixing drum under the action of external force to form a completely sealed space, effectively preventing concrete from overflowing and leaking. When unloading concrete, the outer door is opened under the action of external force (electric push rod), and the concrete inside the mixing drum can be unloaded. When loading concrete, the inner door and the outer door are separated, and the feed hopper assembly is designed to move forward and backward relative to the vehicle body, so that the feed hopper assembly and the mixing drum can be matched and separated. When the mixer truck is transporting and unloading concrete, the feed hopper assembly is separated from the mixing drum under the action of the piston rod of the adjustment mechanism in an extended state. When the mixer truck is loading concrete, the inner door on the outer door is removed, and the feed hopper assembly moves forward under the action of the adjusting mechanism and is inserted into the mixing drum to realize the function of loading materials into the mixing drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a fully sealed mixer truck;

[0027] Figure 2 This is a partial view of the tail of the overall structure of the fully sealed mixer truck;

[0028] Figure 3 It is a cross-sectional view of the sealed inner door assembly of the fully sealed mixer truck in the closed state;

[0029] Figure 4 This is a partial enlarged view of the fully sealed inner door assembly of the fully sealed mixer truck in the closed state;

[0030] Figure 5 It is a cross-sectional view of the fully sealed outer door assembly of the mixer truck in the open state;

[0031] Figure 6 This is a cross-sectional view of the fully sealed mixer truck with the sealed inner door assembly open while loading materials.

[0032] In the figure: 1. body; 2. mixing drum; 3. feed hopper; 4. flange ring; 5. base; 6. electric push rod; 7. fixing part; 8. guide rail; 9. sliding rod; 91. fixing part; 92. sliding part; 10. locking part; 11. outer door; 12. sealing part 1; 13. inner door; 14. sealing part 2; 15. buckle; 16. hook; 17. feed hopper support frame; 18. cylinder. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] Example 1

[0036] like Figures 1 to 6 As shown, a fully sealed concrete mixer truck includes a vehicle body 1 and a mixing drum 2, wherein a feed hopper support frame 17 rotatably mounted with a feed hopper assembly 3 is fixedly mounted on the vehicle body 1, and further includes:

[0037] An opening and closing mechanism is arranged at the rear of the mixing drum 2, and the opening and closing mechanism is symmetrically arranged on both sides of the outer door 11. The opening and closing mechanism includes a flange ring 4, a base 5, an electric push rod 6, a fixing part 7, a guide rail 8 and a sliding rod 9. The flange ring 4 is fixedly installed at the rear of the mixing drum 2, the base 5 is fixedly installed on the side wall of the mixing drum 2, the electric push rod 6 is rotatably installed on the base 5, the output end of the electric push rod 6 is fixedly connected with a fixing part 7, and the fixing part 7 is fixedly installed on the outer door 11. Four guide rails 8 are arranged and fixedly installed on the flange ring 4 at equal intervals. Four sliding rods 9 are arranged and arranged on the outer door 11 at equal intervals. One end of the sliding rod 9 is fixedly installed on the sealed outer door assembly, and the other end passes through the guide rail 8 and is connected to two locking parts 10 through thread matching. The two locking parts 10 are located on the side of the guide rail 8 facing away from the sealed outer door assembly, and the locking part 10 close to the side of the guide rail 8 is in contact with the guide rail 8 but has no pre-tightening force. There is a pre-tightening force between the two locking members 10 , but there is no pre-tightening force between the lower locking member 10 and the guide rail 8 , so the sealed outer door assembly rotates together with the mixing drum.

[0038] The sealed outer door assembly connected to the opening and closing mechanism comprises: an outer door 11 connected to the opening and closing mechanism, a through hole arranged in the middle of the outer door 11 and adapted to the feed hopper assembly 3, and a seal 12 arranged on the side of the outer door 11 opposite to the rear of the mixing drum 2 and coaxially arranged with the outer door 11. When the outer door 11 blocks the rear of the mixing drum 2, the seal 12 is in a compressed state under the action of the electric push rod 6. When the concrete is unloaded, the piston rod of the electric push rod 6 is used to push the outer door backward so that the rear of the mixing drum 2 is opened, and then the mixing drum 2 is reversed to discharge the concrete inside to the outside. When the unloading is completed, the piston rod of the electric push rod 6 is recovered, and then the outer door 11 is moved forward along the guide rail 8, and then the outer door blocks the rear of the mixing drum 2, and the seal 12 is used to seal it.

[0039] The outer door 11 is fixedly provided with a groove structure for installing a second sealing member 14 .

[0040] The sealed inner door 13 assembly is detachably connected to the sealed outer door assembly, and the sealed inner door 13 assembly includes the inner door 13 for blocking the through hole, a sealing member 14 arranged on the side of the outer door 11 opposite to the inner door 13, four buckles 15 arranged circumferentially at the edge of the inner door 13, and a hook 16 arranged circumferentially on the outer door 11 and adapted to the corresponding buckles 15. When the hook 16 is connected to the buckle 15, the sealing member 14 is in a compressed state. By separating the hook 16 from the buckle 15, the inner door 13 can be removed, and then the through hole of the outer door 11 can be opened, so that the feed port at the bottom of the feed hopper assembly 3 can be inserted into the through hole, so as to facilitate the loading of concrete. After the loading is completed, the inner door 13 uses the buckle 15 and the hook 16 to cooperate to block the through hole, and then the sealing member 14 is used to achieve a full sealing effect.

[0041] The feed hopper assembly 3 is adapted to the sealed outer door assembly (through hole on the outer door 11) from which the sealed inner door 13 assembly is removed and is rotatably mounted on the rear of the vehicle body 1 (the feed hopper support frame 17).

[0042] And an adjustment mechanism arranged on the feed hopper assembly 3, the adjustment mechanism includes a cylinder 18, the cylinder 18 is rotatably mounted on the feed hopper assembly 3, and the output end is rotatably mounted on the vehicle body 1, and is used to adjust the switching of the adaption or separation state between the feed hopper assembly 3 and the sealed outer door assembly of the removed sealed inner door assembly 13. By contracting and extending the piston rod of the cylinder 18, the feed hopper assembly 3 can be driven to rotate forward or backward, respectively achieving the effects of loading and transportation.

[0043] Embodiment 2:

[0044] A method for using a fully sealed concrete mixer truck comprises the following steps:

[0045] Step 1: When loading concrete into the mixing drum 2, first separate the buckle 15 from the hook 16, remove the inner door 13, then retract the piston rod of the cylinder 18 to rotate the feed hopper assembly 3 toward the through hole of the outer door 11, so that it fits with the through hole of the outer door 11, and then introduce the concrete into the mixing drum 2 through the feed hopper assembly 3;

[0046] Step 2: After the mixing drum 2 is loaded with concrete, the piston rod of the cylinder 18 extends outward to drive the feed hopper assembly 3 to rotate backward, and the feed hopper assembly 3 is separated from the through hole of the outer door 11, and then the inner door 13 is installed with the outer door 11 through the buckle 15 and the hook 16, and the seal 14 is in a compressed state at this time;

[0047] Step 3: After the mixer truck transports the concrete to the target location, the piston rod of the electric push rod 6 extends outward to drive the outer door 11 to move backward along the guide rail 8, and then the mixing drum 2 reverses, and the concrete inside the mixing drum 2 is unloaded. After the concrete is completely unloaded, the piston rod of the electric push rod 6 is retracted to move the outer door 11 forward along the guide rail 8, and finally seals the rear end of the mixing drum 2. At this time, the seal 12 is in a compressed state.

[0048] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The replacement may be a replacement of a part of the structure, device, method step, or a complete technical solution. Any equivalent replacement or change according to the technical solution and the inventive concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A fully sealed concrete mixer truck, comprising a vehicle body (1) and a mixing drum (2), characterized in that: Also includes: An opening and closing mechanism is arranged at the rear of the mixing drum (2); A sealed outer door assembly connected to the opening and closing mechanism; A sealed inner door assembly detachably connected to the sealed outer door assembly; A feed hopper assembly (3) adapted to the sealed outer door assembly from which the sealed inner door assembly is removed and rotatably mounted at the rear of the vehicle body (1); and an adjusting mechanism arranged on the feed hopper assembly (3), for adjusting the switching of the adaption or separation state between the feed hopper assembly (3) and the sealed outer door assembly after the sealed inner door assembly is removed; The opening and closing mechanism comprises a flange ring (4), a base (5), an electric push rod (6), a fixing member (7), a guide rail (8) and a sliding rod (9); the flange ring (4) is fixedly mounted on the rear end of the mixing drum (2); the base (5) is fixedly mounted on the mixing drum (2); the electric push rod (6) is rotatably mounted on the base (5); the output end of the electric push rod (6) is fixedly connected with a fixing member (7); the fixing member (7) is fixedly mounted on the sealed outer door assembly; a plurality of guide rails (8) are provided and are fixedly mounted on the flange ring (4) at equal intervals; a plurality of sliding rods (9) are provided and are arranged on the sealed outer door assembly at equal intervals; one end of the sliding rod (9) is fixedly mounted on the sealed outer door assembly; the other end passes through the guide rail (8) and is matched and connected with two locking members (10); the two locking members (10) are located on the side of the guide rail (8) facing away from the sealed outer door assembly; The sealed outer door assembly comprises: an outer door (11) connected to the opening and closing mechanism, a through hole arranged in the middle of the outer door (11) and adapted to the feed hopper assembly (3), and a sealing member (12) arranged on a side of the outer door (11) opposite to the rear of the mixing drum (2) and coaxially arranged with the outer door (11); when the outer door (11) blocks the rear of the mixing drum (2), the sealing member (12) is in a compressed state under the action of the opening and closing mechanism; The sealed inner door assembly comprises an inner door (13) for sealing the through hole, a sealing member 2 (14) arranged on a side of the outer door (11) opposite to the inner door (13), a plurality of buckles (15) circumferentially arranged at the edge of the inner door (13), and hooks (16) circumferentially arranged on the outer door (11) and adapted to the corresponding buckles (15), wherein the sealing member 2 (14) is in a compressed state after the hooks (16) are connected to the buckles (15); The regulating mechanism comprises a cylinder (18), wherein the cylinder (18) is rotatably mounted on the feed hopper assembly (3) and the output end is rotatably mounted on the vehicle body (1).

2. A fully sealed concrete mixer truck according to claim 1, characterized in that: The outer door (11) is fixedly provided with a groove structure for installing a second sealing member (14).

3. A fully sealed concrete mixer truck according to claim 2, characterized in that: A feed hopper support frame (17) is fixedly mounted on the vehicle body (1) and is rotatably mounted with the feed hopper assembly (3).

4. The method for using a fully sealed concrete mixer truck according to claim 3, characterized in that: The following steps are involved: Step 1: When loading concrete into the mixing drum (2), first separate the buckle (15) from the hook (16), remove the inner door (13), then retract the piston rod of the cylinder (18) to rotate the feed hopper assembly (3) toward the through hole of the outer door (11), so that it fits with the through hole of the outer door (11), and then guide the concrete into the mixing drum (2) through the feed hopper assembly (3); Step 2: After the mixing drum (2) is loaded with concrete, the piston rod of the cylinder (18) extends outward to drive the feed hopper assembly (3) to rotate backward, and the feed hopper assembly (3) is separated from the through hole of the outer door (11), and then the inner door (13) is mounted on the outer door (11) through the buckle (15) and the hook (16), and the second seal (14) is in a compressed state; Step 3: After the mixer truck transports the concrete to the destination, the piston rod of the electric push rod (6) extends outward to drive the outer door (11) to move backward along the guide rail (8), and then the mixing drum (2) reverses, and the concrete inside the mixing drum (2) is discharged. After the concrete is completely discharged, the piston rod of the electric push rod (6) is retracted to move the outer door (11) forward along the guide rail (8), and finally seals the rear end of the mixing drum (2). At this time, the seal 1 (12) is in a compressed state.

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