Double-row type concrete spiral distributor

Abstract

A double-row type concrete spiral distributor comprises a walking beam and a main body frame, the bottom of the main body frame is sequentially provided with a front packing auger, a front scraper, a rear packing auger and a rear scraper, the front packing auger, the front scraper, the rear packing auger and the rear scraper are sequentially arranged at the bottom of the main body frame from front to back, the front packing auger is used for preliminarily distributing concrete along the left side and the right side, and the rear scraper is used for distributing the concrete along the left side and the right side; the method comprises the following steps: primarily distributing concrete by using a front auger, primarily scraping the primarily distributed concrete by using a front scraper blade, secondarily distributing the primarily scraped concrete by using a rear auger, and finally secondarily scraping the secondarily distributed concrete by using the rear scraper blade, so that the concrete is uniformly distributed through the secondary distribution of the front and rear double rows of augers and the graded scraping of the front and rear double scraper blades. The uniform and compact degree of polyurethane concrete distribution operation can be effectively guaranteed, and the problem that in the prior art, the compactness is not uniform in the concrete distribution process is solved. In addition, the side baffle capable of ascending and descending is arranged, so that the side baffle can automatically ascend to cross an obstacle when encountering the obstacle in the operation process.

Description

Technical Field

[0001] The utility model relates to the field of construction machinery, especially to the field of concrete paving technology, and specifically to a double-row concrete spiral distributor. Background Technique

[0002] In recent years, the road and bridge construction industry in China has gradually transformed from high-speed development to high-quality development. Due to its superior performance, polyurethane concrete has been widely used in various pavement projects. Among them, the spiral distributor is a commonly used construction equipment in pavement projects. It distributes materials from the middle to both sides by the forward and reverse rotation of the auger, making the materials evenly distributed.

[0003] For example, the "spiral distribution mechanism of a paver" disclosed in the Chinese utility model patent with the patent number 202020267180.0 (the authorized announcement number is CN212533615U) includes a distribution box. The back of the distribution box is fixedly connected with a support plate. The front of the support plate is fixedly connected with a drive box. The two sides of the drive box are fixedly connected with spiral distribution rods. The back of the distribution box is fixedly connected with a mounting column located below the support plate. The front of the distribution box is movably sleeved with a connecting rod. The right end of the connecting rod is fixedly connected with an adjusting plate. One end of a first spring is fixedly connected to the inner side of the adjusting plate. This spiral distribution mechanism changes the discharge amount of the distribution box by changing the size of the discharge port of the distribution box. At the same speed, to a certain extent, it changes the paving thickness of the paver.

[0004] However, due to the special material properties of polyurethane concrete, such spiral distribution mechanisms still have the problem of uneven material distribution. Since it only has a single row of spiral distribution rods to distribute the concrete, the compactness of the concrete at the feeding port is very high, while the compactness of the concrete distributed by the spiral distribution rods will become lower, which leads to the problem of uneven compactness of the concrete, greatly increasing the operation difficulty of subsequent processes such as vibration compaction, and also reducing the paving efficiency and quality of polyurethane concrete.

[0005] In addition, to ensure the paving quality, side baffles are generally arranged on both sides of the spiral distribution rods of the concrete spiral distributor to prevent material overflow. However, the existing side baffles of the spiral distributor also have defects: that is, when the side baffles encounter obstacles during operation, the side baffles cannot freely float over the obstacles. In this case, manual adjustment of the side baffles is required to make them cross the obstacles, which will further reduce the paving efficiency and increase the labor intensity.

[0006] Therefore, how to provide a spiral distributor that can make the paving compactness of polyurethane concrete more uniform and at the same time enable the side baffles to automatically cross obstacles during operation is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0007] The first technical problem to be solved by the present utility model is to provide a double-row concrete spiral distributor which can make the paving density more uniform by arranging a double row of augers in the front and back.

[0008] The second technical problem to be solved by the present utility model is to provide a double-row concrete spiral distributor which can make the side baffle automatically cross obstacles during operation by setting the side baffle to be able to float up and down.

[0009] The technical solution adopted by the present utility model to solve the first technical problem is as follows: a double-row concrete spiral distributor includes

[0010] Traveling beams, provided with a pair and arranged opposite to each other left and right;

[0011] The main body frame is connected between the pair of traveling beams;

[0012] The front auger is rotatably arranged at the bottom of the main body frame to preliminarily distribute the concrete along both left and right sides;

[0013] The front scraper is arranged at the bottom of the main body frame and behind the front auger to preliminarily level the preliminarily distributed concrete;

[0014] The rear auger is rotatably arranged at the bottom of the main body frame and behind the front scraper to perform secondary distribution on the preliminarily leveled concrete;

[0015] The rear scraper is arranged at the bottom of the main body frame and behind the rear auger to perform secondary leveling on the concreted after secondary distribution.

[0016] In order to optimize the overall structures of the front auger and the rear auger and enable the front auger and the rear auger to better perform preliminary distribution and secondary distribution respectively, preferably, the front auger is a bidirectional screw with positive and negative double spirals, the rear auger is a unidirectional screw with a single spiral, and both the front auger and the rear auger are rotated under the drive of their respective corresponding driving members.

[0017] In order to enable the front scraper and the rear scraper to better achieve gradient leveling and better cooperate with the front auger and the rear auger in the distribution work, preferably, the front scraper is arranged at the bottom of the main body frame so as to be able to lift and lower by connecting a front lifting screw, and the leveling height of the front scraper can be adjusted by adjusting the front lifting screw. The rear scraper is arranged at the bottom of the main body frame so as to be able to lift and lower by connecting a rear lifting screw, and the leveling height of the rear scraper can be adjusted by adjusting the rear lifting screw.

[0018] The technical solution adopted by the present utility model to solve the second technical problem is as follows: Side baffle mechanisms for preventing concrete from overflowing are provided on both the left and right sides of the front auger and the rear auger. The side baffle mechanism includes a side baffle, and the side baffle is vertically movably arranged on the main body frame.

[0019] In order to enable the side baffle to better float or descend automatically, preferably, the side baffle mechanism further includes a floating pin and a telescopic spring. One end of the floating pin is fixed on the main body frame or the side baffle. The telescopic spring is sleeved on the floating pin and is respectively connected between the side baffle and the main body frame. The side baffle is flexibly connected to the main body frame through the up-and-down telescoping of the telescopic spring, so that the side baffle can automatically rise to cross an obstacle when encountering an obstacle during operation.

[0020] To ensure that the batching machine here can smoothly move forward along the spreading area and can also realize the overall lifting of the main body frame to ensure the thickness of batching, preferably, the main body frame is vertically movably arranged on the walking beam. A lifting mechanism capable of driving the main body frame to lift is further provided between the main body frame and the walking beam. Walking wheels are provided at the bottom of the walking beam, and a walking motor is provided on the walking beam. The walking motor drives the walking wheels to rotate through a connecting transmission chain.

[0021] To optimize the overall structure of the lifting mechanism so that it can better drive the main body frame to lift up and down, preferably, the lifting mechanism includes a lead screw, a lifting motor and a worm and worm gear device. The lead screw is vertically arranged on the walking beam. The lifting motor and the worm and worm gear device are both arranged on the main body frame. The lifting motor drives the worm and worm gear device to slide up and down along the lead screw to realize the up-and-down lifting of the main body frame.

[0022] To enable the lifting motor and the worm and worm gear device to be better installed on the main body frame and also play an up-and-down guiding role during the lifting process of the main body frame, preferably, a support frame is provided at each of the left and right ends of the main body frame. The lifting motor and the worm and worm gear device are both arranged on the corresponding support frame. A guide sleeve is provided on each support frame, and a guide post that can be in guiding cooperation with the guide sleeve is provided on the walking beam.

[0023] To make the up-and-down lifting of the main body frame more stable, preferably, two guide posts are provided on the walking beam and are spaced apart. The two guide posts are respectively located on the opposite sides of the lead screw. Correspondingly, two guide sleeves are also provided on the support frame.

[0024] To assist the batching machine to perform better spreading work, preferably, an auxiliary platform for assisting in leveling the concrete is further provided at the rear side of the main body frame.

[0025] Compared with the prior art, the advantages of the utility model are as follows: by sequentially arranging a front auger, a front scraper, a rear auger and a rear scraper from front to back at the bottom of the main frame, first the front auger preliminarily distributes the concrete along the left and right sides, then the front scraper preliminarily levels the preliminarily distributed concrete, then the rear auger performs secondary distribution on the preliminarily leveled concrete, and finally the rear scraper performs secondary leveling on the concretesubjected to secondary distribution. Through the secondary distribution of the front and rear double-row augers and the gradient leveling of the front and rear double scrapers, the uniform and dense degree of the polyurethane concrete batching operation can be effectively guaranteed, the problem of uneven compactness in the concrete distribution process in the prior art is solved, thereby reducing the operation difficulty of subsequent processes such as vibration compaction, and further improving the paving efficiency and paving quality of the polyurethane concrete. In addition, by setting side baffles that can be lifted up and down, the side baffles can automatically rise to cross obstacles when encountering obstacles during the operation process. Description of the Drawings

[0026] Figure 1 is a schematic diagram of the overall structure of the paver in this embodiment;

[0027] Figure 2 is a schematic diagram of the overall structure of the paver from the bottom view in this embodiment;

[0028] Figure 3 is a schematic diagram of the connection structure between the side baffle and the main frame in this embodiment. Detailed Embodiment

[0029] The following further describes the present utility model in detail with reference to the embodiments of the drawings.

[0030] Figures 1 to 3 The shown is a schematic diagram of this embodiment. The double-row concrete spiral batching machine of this embodiment mainly includes a walking beam 1, a main frame 2, a front auger 3, a front scraper 4, a rear auger 5, a rear scraper 6, a driving member 7, etc.

[0031] Refer to Figure 1 and Figure 2 As shown, there are a pair of walking beams 1 arranged opposite to each other left and right. The main frame 2 is connected between the pair of walking beams 1. The front auger 3 is rotatably arranged at the bottom of the main frame 2 and is used for preliminarily distributing the concrete along the left and right sides. The front scraper 4 is arranged at the bottom of the main frame 2 and behind the front auger 3 and is used for preliminarily leveling the preliminarily distributed concrete. The rear auger 5 is rotatably arranged at the bottom of the main frame 2 and behind the front scraper 4 and is used for performing secondary distribution on the preliminarily leveled concrete. The rear scraper 6 is arranged at the bottom of the main frame 2 and behind the rear auger 5 and is used for performing secondary leveling on the concretesubjected to secondary distribution.

[0032] Among them, in order to optimize the overall structures of the front auger 2 and the rear auger 5, so that the front auger and the rear auger can better perform primary apportionment and secondary apportionment respectively, refer to Figure 2 As shown, in this embodiment, the front auger 3 is a two-way screw with positive and negative double helices, and the rear auger 5 is a one-way screw with a single helix. Both the front auger 3 and the rear auger 5 are rotated under the drive of their respective corresponding driving members 7.

[0033] Secondly, in order to enable the front scraper 4 and the rear scraper 6 to better achieve gradient scraping and better cooperate with the front auger 3 and the rear auger 5 in the apportionment work, refer to Figure 2 As shown, in this embodiment, the front scraper 4 is arranged at the bottom of the main frame 2 in a liftable manner by connecting the front lifting screw 4a. The scraping height of the front scraper 4 can be adjusted by adjusting the front lifting screw 4a. The rear scraper 6 is arranged at the bottom of the main frame 2 in a liftable manner by connecting the rear lifting screw 6a. The scraping height of the rear scraper 6 can be adjusted by adjusting the rear lifting screw 6a.

[0034] In this embodiment, in order to prevent the concrete on the left and right sides of the front auger 3 and the rear auger 5 from overflowing, refer to Figure 2 As shown, side baffle mechanisms 8 for preventing concrete from overflowing are also specially provided on the left and right sides of the front auger 3 and the rear auger 5. The side baffle mechanism 8 includes side baffles 8a, and the side baffles 8a are arranged on the main frame 2 in a liftable manner.

[0035] Meanwhile, in order to enable the side baffle 8a to better float or descend by itself, refer to Figure 3 As shown, the side baffle mechanism 8 in this embodiment also includes a floating pin 8b and a telescopic spring 8c. One end of the floating pin 8b is fixed on the main frame 2 or the side baffle 8a. The telescopic spring 8c is sleeved on the floating pin 8b and is respectively connected between the side baffle and the main frame 2. The side baffle 8a is flexibly connected to the main frame 2 through the up and down telescoping of the telescopic spring 8c, so that the side baffle 8a can automatically rise to cross the obstacle when encountering an obstacle during the operation process.

[0036] In this embodiment, in order to ensure that the material distributor here can smoothly advance along the apportionment area and can also realize the overall lifting of the main frame 2 to ensure the thickness of the material distribution, refer to Figure 1 As shown, the main frame 2 is arranged on the walking beam 1 in a liftable manner. A lifting mechanism 9 capable of driving the main frame 2 to lift is also provided between the main frame 2 and the walking beam 1. Walking wheels 1a are provided at the bottom of the walking beam 1, and a walking motor 1b is provided on the walking beam 1. The walking motor 1b drives the walking wheels 1a to rotate by connecting a transmission chain 1c.

[0037] Refer to Figure 1 and Figure 2As shown in the figure, in order to optimize and improve the overall mechanism of the lifting mechanism 9 so that it can better drive the main body frame 2 to move up and down, the lifting mechanism 9 in this embodiment includes a lead screw 9a, a lifting motor 9b and a worm and worm gear device 9c. The lead screw 9a is vertically arranged on the walking beam 1, and both the lifting motor 9b and the worm and worm gear device 9c are arranged on the main body frame 2. The lifting motor 9b drives the worm and worm gear device 9c to slide up and down along the lead screw 9a to realize the up and down movement of the main body frame 2.

[0038] In addition, in this embodiment, in order to enable both the lifting motor and the worm and worm gear device 9c to be better installed on the main body frame 2 and also play a role in up and down guiding during the lifting process of the main body frame 2, a support frame 2a is provided at both the left and right ends of the main body frame 2. The lifting motor 9b and the worm and worm gear device 9c are respectively arranged on the corresponding support frame 2a. A guide sleeve 2b is provided on each support frame 2a, and a guide post 1d that can be in guiding fit with the guide sleeve 2b is provided on the walking beam 1.

[0039] Here, in order to make the up and down movement of the main body frame 2 more stable, there are two guide posts 1d on the walking beam 1 and they are spaced apart. The two guide posts 1d are respectively located on the opposite sides of the lead screw 9a. Correspondingly, there are also two guide sleeves 2b on the support frame 2a.

[0040] In this embodiment, in order to assist the batching machine to carry out better spreading work, an auxiliary platform 2c for assisting in leveling the concrete is also specially provided at the rear side of the main body frame 2. For specific reference Figure 2 as shown.

[0041] It also needs to be additionally explained here that in this embodiment, by sequentially arranging a front auger 3, a front scraper 4, a rear auger 5 and a rear scraper 6 from front to back at the bottom of the main body frame 2, first let the front auger 3 conduct preliminary spreading of the concrete along the left and right sides, then let the front scraper 4 conduct preliminary leveling of the preliminarily spread concrete, then let the rear auger 5 conduct secondary spreading of the preliminarily leveled concrete, and finally let the rear scraper 6 conduct secondary leveling of the secondarily spread concrete. Through the secondary spreading of the front and rear double-row augers and the gradient leveling of the front and rear double scrapers, it can effectively ensure the uniform and dense degree of the polyurethane concrete batching operation, solve the problem of uneven density in the process of concrete spreading in the prior art, thereby reducing the operation difficulty of subsequent processes such as vibration compaction, and further improving the paving efficiency and paving quality of the polyurethane concrete. In addition, by setting a side baffle 8a that can move up and down, the side baffle 8a can automatically rise to cross the obstacle when encountering an obstacle during the operation, solving the drawback brought by the inability of the side baffle in the prior art to freely float over the obstacle.

[0042] It should be noted that in the description of this embodiment, the orientation or positional relationship indicated by terms such as "front, back", "left, right", "up, down", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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. Therefore, it should not be construed as a limitation to the present utility model. The terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A double-row concrete spiral distributor, characterized in that: including walking beams (1), provided in a pair and arranged opposite to each other left and right; a main body frame (2), connected between the pair of walking beams (1); a front auger (3), rotatably arranged at the bottom of the main body frame (2) to preliminarily distribute the concrete along the left and right sides; a front scraper (4), provided at the bottom of the main body frame (2) and located at the rear end of the front auger (3) to preliminarily level the preliminarily distributed concrete; a rear auger (5), rotatably arranged at the bottom of the main body frame (2) and located at the rear end of the front scraper (4) to secondarily distribute the preliminarily leveled concrete; a rear scraper (6), provided at the bottom of the main body frame (2) and located at the rear end of the rear auger (5) to secondarily level the secondarily distributed concrete.

2. The double-row concrete spiral distributor according to claim 1, wherein: The front auger (3) is a two-way screw with positive and negative double helices, the rear auger (5) is a one-way screw with a single helix, and both the front auger (3) and the rear auger (5) are rotated under the drive of their respective corresponding drive members (7).

3. The double-row concrete spiral distributor according to claim 1, characterized in that: The front scraper (4) is arranged at the bottom of the main body frame (2) so as to be able to lift by connecting a front lifting screw (4a), and the leveling height of the front scraper (4) can be adjusted by adjusting the front lifting screw (4a). The rear scraper (6) is arranged at the bottom of the main body frame (2) so as to be able to lift by connecting a rear lifting screw (6a), and the leveling height of the rear scraper (6) can be adjusted by adjusting the rear lifting screw (6a).

4. The double-row concrete spiral distributor according to claim 1, characterized in that: Side baffle mechanisms (8) for preventing concrete from overflowing are provided on both the left and right sides of the front auger (3) and the rear auger (5). The side baffle mechanism (8) includes a side baffle (8a), and the side baffle (8a) is arranged on the main body frame (2) so as to be able to lift.

5. The double-row concrete spiral distributor according to claim 4, wherein: The side baffle mechanism (8) further includes a floating pin (8b) and a telescopic spring (8c). One end of the floating pin (8b) is fixed on the main body frame (2) or the side baffle (8a). The telescopic spring (8c) is sleeved on the floating pin (8b) and is respectively connected between the side baffle and the main body frame (2). The side baffle (8a) is flexibly connected to the main body frame (2) through the up and down telescoping of the telescopic spring (8c), so that the side baffle (8a) can automatically rise to cross an obstacle when encountering an obstacle during operation.

6. The double-row concrete spiral distributor according to any one of claims 1 to 5, characterized in that: The main body frame (2) is arranged on the walking beam (1) so as to be able to lift. A lifting mechanism (9) capable of driving the main body frame (2) to lift is further provided between the main body frame (2) and the walking beam (1). Walking wheels (1a) are provided at the bottom of the walking beam (1), and a walking motor (1b) is provided on the walking beam (1). The walking motor (1b) drives the walking wheels (1a) to rotate by connecting a transmission chain (1c).

7. The double-row concrete spiral feeder according to claim 6, wherein: The lifting mechanism (9) includes a lead screw (9a), a lifting motor (9b) and a worm and worm gear device (9c). The lead screw (9a) is vertically arranged on the walking beam (1). The lifting motor (9b) and the worm and worm gear device (9c) are both arranged on the main body frame (2). The lifting motor (9b) drives the worm and worm gear device (9c) to slide up and down along the lead screw (9a) to realize the up and down lifting of the main body frame (2).

8. The double-row concrete spiral distributor according to claim 7, wherein: A support frame (2a) is provided at each of the left and right ends of the main body frame (2). The lifting motor (9b) and the worm and worm gear device (9c) are both arranged on the corresponding support frame (2a). A guide sleeve (2b) is provided on each support frame (2a). A guide post (1d) that can be in guiding fit with the guide sleeve (2b) is provided on the walking beam (1).

9. The double-row concrete spiral distributor according to claim 8, wherein: There are two guide posts (1d) on the walking beam (1), which are spaced apart. The two guide posts (1d) are respectively located on the opposite sides of the lead screw (9a). Correspondingly, there are also two guide sleeves (2b) on the support frame (2a).

10. The double-row concrete spiral distributor according to claim 1, characterized in that: An auxiliary platform (2c) for assisting in leveling the concrete is further provided at the rear side of the main body frame (2).

Images