Concrete conveying device and method of using the same

Abstract

The present invention relates to the field of concrete transportation. The present invention discloses a concrete transportation device and a method for using the same. The problem to be solved by the present invention is that a certain amount of concrete pouring is required during the concrete laying process. When the concrete delivery is started or stopped, the discharge end of the delivery pipe usually contains impurities such as stones, which causes the discharge end to be unable to be completely closed, causing the concrete to continue to flow outward, resulting in the inability to accurately and quantitatively deliver the concrete. The present invention first reduces the flow rate of the concrete delivery in the discharge pipe through a first blocking plate, and then quickly blocks the discharge pipe through a second blocking plate, so that when the concrete reaches the required laying amount, the opening of the discharge pipe can be closed in time to prevent the concrete from continuing to flow outward in the discharge pipe.

Description

Technical Field

[0001] The invention relates to the field of concrete transportation, in particular to a concrete transportation device and a use method thereof. Background Art

[0002] After the concrete is prepared, it needs to be guided and transported from the tank truck or concrete mixer to the paving box on the construction site. As the concrete is laid, the specific construction location on the construction site is constantly changing, which requires that the concrete must be transported to where the paving box is laid.

[0003] The existing patent (Announcement No.: CN107013042B) discloses a concrete conveying device, including a swing cylinder; a lifting rod hinged to the swing cylinder at the bottom; and a spiral conveying pipe hinged to the top of the lifting rod, wherein the spiral conveying pipe can swing back and forth within a certain angle range on the horizontal plane under the drive of the swing cylinder. According to the present invention, it is possible to adjust the conveying position and conveying angle in real time, so that the conveying of concrete becomes flexible and variable, greatly improving the efficiency of concrete laying. In the process of realizing the present invention, the inventor found that at least the following problems in the prior art have not been solved: concrete needs to be poured quantitatively during the laying process, and when the delivery of concrete is started and stopped, the discharge end of the conveying pipe usually contains impurities such as stones, which makes it impossible for the discharge end to be completely closed, so that the concrete continues to flow out, resulting in the inability to accurately and quantitatively convey the concrete. Summary of the invention

[0004] The object of the present invention is to provide a concrete conveying device and a method of using the same, so as to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned object, the present invention provides the following technical solutions: a concrete conveying device, comprising a horizontally arranged laying frame, a conveying pipe is arranged on the laying frame, a hopper is arranged on the top of the conveying pipe, a conveying device is arranged on the conveying pipe, the conveying device is rotatably matched with the conveying pipe, the discharge end of the conveying pipe is connected with the discharge pipe, a bearing box is also arranged on the top of the laying frame, a transmission device is arranged in the bearing box, the transmission device is in transmission cooperation with the conveying device, a blocking device is arranged on the side of the bearing box facing the discharge pipe, the blocking device extends into the discharge pipe below, the blocking device is in sliding cooperation with the discharge pipe, a cleaning device is also arranged on the inner wall of the discharge pipe, and the cleaning device is in conflict cooperation with the blocking device.

[0005] Preferably, the conveying device includes a servo motor, a driving rod and a conveying auger, the servo motor is arranged on the side wall of the conveying pipe away from the end of the discharge pipe, the driving rod is transmission-connected to the main shaft of the servo motor, the driving rod is rotationally matched with the side wall of the conveying pipe, the conveying auger is fixedly connected to the driving rod, and the conveying auger is arranged in the conveying pipe.

[0006] Preferably, the transmission device includes a transmission, a transmission rod, a transmission plate, a driving plate, a transmission belt, a spiral rod, a movable frame, a transmission frame, a rifle rod, a rotating gear and a pressure spring, the transmission is arranged on the side wall of the bearing box away from the blocking device, the transmission rod is connected to the input shaft of the transmission, the transmission plate is fixedly connected to the transmission rod, the driving plate is fixedly connected to the driving rod, the transmission belt is sleeved between the transmission plate and the driving plate, the spiral rod is arranged on the output shaft of the transmission, the spiral rod extends toward the blocking device, and the spiral rod is rotatably matched with the bearing box, the upper and lower ends on both sides of the inner wall of the bearing box are fixedly connected by fixing rods, the movable frame is spirally arranged on the spiral rod, The movable frame is slidably matched with two fixed rods, and a transmission frame is also slidably arranged on the inner wall of the carrying box, the rifle rod is fixedly connected to the transmission frame, the rotating gear is arranged on the side wall of the carrying box facing the discharge pipe, and the rotating gear is rotatably matched with the carrying box, the rifle rod is arranged in the direction of the rotating gear, and the inner wall of the rotating gear is provided with a spiral line that spirally matches the rifle rod, the pressure spring is sleeved on the rifle rod, and the two ends of the pressure spring are respectively connected to the transmission frame and the inner wall of the carrying box, the transmission frame contacts with the side opposite to the movable frame, and a clamping block is arranged on the side of the transmission frame opposite to the movable frame, the clamping block is elastically arranged, and a clamping port corresponding to the clamping block is arranged on the carrying box.

[0007] Preferably, the sealing device includes a sliding plate and a first sealing plate, the sliding plate is arranged on the side wall of the supporting box facing the discharge pipe, and the sliding plate is slidably matched with the supporting box, the side wall of the sliding plate facing the rotating gear is provided with a latching tooth engaged with the rotating gear, the sliding plate is extended toward the direction of the discharge pipe to be provided with a first sealing plate, and the first sealing plate is slidably matched with the discharge pipe.

[0008] The cam is provided with a limit plate on the side wall of the sliding groove, the limit plate is wedge-shaped, the blocking frame is inclined toward one end of the limit plate, and a second blocking plate is extended on the trigger frame toward the direction of the discharging pipe, and the second blocking plate is slidably matched with the discharging pipe.

[0009] Preferably, the cleaning device includes an annular frame and a supporting plate, the annular frame is fixedly arranged on the inner wall of the discharge pipe, the two side walls of the annular frame are respectively arranged toward the second sealing plate and the discharge port of the discharge pipe, the supporting plate is arranged on the side wall of the annular frame away from the second sealing plate, the annular frame is provided with an arc groove symmetrically arranged with the supporting plate, sliding rods are slidably arranged in the two arc grooves, a cleaning scraper is arranged on the sliding rod toward the direction of the second sealing plate, a scraping frame is hingedly arranged on the cleaning scraper, the scraping frame is elastically arranged, the scraping frame extends toward the position of the second sealing plate and contacts with the inner wall of the discharge pipe below the second sealing plate, and the scraping frame is inclined.

[0010] Preferably, the side walls of the supporting plate facing the two arc-shaped grooves are hinged with hinged frames, and the end of the hinged frame away from the supporting plate is hingedly cooperated with the sliding rod, and the annular frame is provided with a positioning plate fixedly provided on the side wall of the supporting plate, and the positioning plate is located below the supporting plate, and a reset spring is provided between the positioning plate and the supporting plate.

[0011] Preferably, the second sealing plate is provided with a pressure plate extending in the direction of the annular frame, the bearing plate is slidably matched with the discharge pipe and extends in the direction of the pressure plate, a wedge-shaped block is provided on the side wall of the bearing plate facing the pressure plate, the wedge-shaped block is elastically provided, the pressure plate is in contact with the wedge-shaped block, and an inclined side plate abutting against the wedge-shaped block is provided on the top of the discharge pipe, and the inclined surface of the inclined side plate is in contact with the inclined surface of the wedge-shaped block.

[0012] Preferably, the method for using the concrete conveying device comprises the following steps:

[0013] S1: When distributing concrete, concrete is put into the conveying pipe through the hopper on the conveying pipe. At this time, the servo motor drives the driving rod to rotate, and the driving rod drives the conveying auger to rotate. The conveying auger transports the concrete in the conveying pipe toward the discharge pipe.

[0014] S2: When the driving rod rotates, the driving rod will drive the driving disc to rotate. The rotation of the driving disc causes the transmission belt to drive the driving disc to rotate. When the driving disc rotates, it is connected to the input shaft of the transmission. Then, the spiral rod on the output shaft rotates under the drive of the transmission. The rotation of the spiral rod causes the mobile frame to slowly move toward the direction of the blocking device. After the mobile frame contacts the opposite side of the transmission frame, the transmission frame will move toward the direction of the blocking device. The rifle rod on the transmission frame moves linearly. The rifle rod drives the rotating gear to rotate through the spiral line between the rifle rod and the rotating gear. The rotation of the rotating gear will gradually drive the blocking device to move toward the direction of the discharge pipe, which is convenient for the subsequent blocking of the discharge pipe. When the clamping block on the transmission frame is docked with the bayonet on the bearing box, the blocking device will completely block the discharge pipe, thereby achieving the required amount of concrete.

[0015] S3: When the transmission frame moves toward the blocking device, the transmission frame drives the rifle rod to move linearly, which causes the rotating gear to rotate continuously. The rotating gear rotates and contacts the latching teeth on the sliding plate, so that the sliding plate moves continuously toward the discharge pipe. The first blocking plate on the sliding plate facing the discharge pipe gradually narrows the opening of the discharge pipe, so that the flow of concrete flowing into the discharge pipe is gradually reduced, thereby preventing the subsequent second blocking plate from completely blocking the inner wall of the discharge pipe.

[0016] When the sliding plate moves toward the discharge pipe, the baffle plate on the trigger frame will contact with the baffle block on the opposite side of the blocking frame, and the baffle block will limit the movement of the baffle plate, so that the sliding plate can move toward the discharge pipe under the restriction of the baffle block, and the trigger frame will not move. When the sliding plate continues to move toward the discharge pipe, after the first blocking plate reduces the size of the opening in the discharge pipe, the limiting plate on the sliding plate will contact with the inclined front end of the blocking frame. Since the limiting plate is wedge-shaped and the front end of the blocking frame is inclined, the blocking frame can be deflected on the positioning rod. After the blocking frame is deflected, the baffle block on the blocking frame will no longer hinder the trigger frame, and the connecting spring between the trigger frame and the sliding plate will drive the trigger frame to quickly extend toward the direction of the discharge pipe, so that the second blocking plate quickly moves toward the discharge pipe, contacts with the inner wall of the discharge pipe to block the discharge pipe;

[0017] S5: When the trigger frame drives the second blocking plate to quickly block the opening in the discharge pipe, the second blocking plate moves toward the discharge pipe, and the pressure plate arranged on the second blocking plate moves toward the discharge pipe synchronously, and the side opposite to the bearing plate contacts the cross section of the wedge-shaped block, thereby synchronously driving the bearing plate to slide on the annular frame. When the bearing plate slides, the hinged frames on both sides of the bearing plate drive the sliding rod to move in the arc groove on the annular frame. At this time, the cleaning scraper on the sliding rod moves in an arc shape, so that the scraping frame discharges the material under the second blocking plate The inner wall of the pipe is scraped and swept. Since the first blocking plate reduces the flow of concrete in the discharge pipe, it is convenient for the scraping frame to scrape and sweep the inner wall of the discharge pipe, and there is no need to clean the entire arc-shaped inner wall of the discharge pipe. After the scraping frame scrapes the inner wall of the discharge pipe below the second blocking plate, the second blocking plate continues to move downward, and the wedge-shaped block on the bearing plate will contact the inclined surface of the inclined side plate, thereby shrinking the wedge-shaped block. The shrinking wedge-shaped block will quickly reset the bearing plate driven by the reset spring, and at this time, the second blocking plate will block the cleaned inner wall of the discharge pipe.

[0018] S6: The scraping frame hingedly arranged on the cleaning scraper is inclined. When the bearing plate drives the hinged frame to make the two cleaning scrapers move relatively, the two scraping frames gather the concrete along the inner wall of the discharge pipe. At this time, the scraping frame hingedly arranged on the cleaning scraper will deflect and squeeze the concrete between the scraping frames out from under the second blocking plate, so that the second blocking plate can block the discharge pipe.

[0019] S7: When concrete needs to be laid again after one batch of concrete is laid, the transmission is adjusted so that the servo motor can drive the spiral rod to quickly reset the moving frame away from the blocking device when it rotates. Because the clamping block and the bayonet are continuously in a clamping state, the first blocking plate and the second blocking plate continue to block the discharge pipe during this process. Then the operator separates the clamping block from the bayonet, and the transmission frame is reset to rotate the rotating gear, thereby resetting the sliding plate to pull the first blocking plate out of the discharge pipe. During the movement of the sliding plate, the trigger frame is synchronously driven to move by the connecting spring, thereby resetting the second blocking plate. Because the baffle on the trigger frame is inclined, it will not cause obstruction when it contacts the blocking frame, thereby continuously carrying out quantitative laying of concrete.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the present invention, when the driving rod rotates, the driving rod will drive the driving plate to rotate, and the rotation of the driving plate causes the transmission belt to drive the transmission plate to rotate. When the transmission plate rotates, it is connected to the input shaft of the transmission, and then the spiral rod on the output shaft is rotated under the drive of the transmission. The rotation of the spiral rod causes the movable frame to slowly move toward the direction of the blocking device. After the movable frame contacts the side opposite to the transmission frame, the transmission frame will move toward the direction of the blocking device. The rifle rod on the transmission frame moves linearly, and the rifle rod drives the rotating gear to rotate through the spiral line between the rifle rod and the rotating gear. The rotation of the rotating gear will gradually drive the blocking device to move in the direction of the discharge pipe, so as to facilitate the subsequent blocking of the discharge pipe. When the clamping block on the transmission frame is docked with the bayonet on the carrying box, the blocking device will completely block the discharge pipe, thereby achieving the required amount of concrete.

[0022] In the present invention, when the transmission frame moves toward the blocking device, the transmission frame drives the rifle rod to move linearly, which causes the rotating gear to rotate continuously. The rotation of the rotating gear will contact the locking teeth on the sliding plate, thereby causing the sliding plate to move continuously toward the discharge pipe. The first blocking plate arranged on the sliding plate toward the discharge pipe will gradually reduce the opening of the discharge pipe, thereby gradually reducing the flow rate of concrete flowing into the discharge pipe, thereby preventing the subsequent second blocking plate from completely blocking the inner wall of the discharge pipe.

[0023] When the sliding plate moves toward the discharge pipe, the baffle plate on the trigger frame will contact with the baffle block on the opposite side of the blocking frame, and the baffle block limits the movement of the baffle plate, so that when the sliding plate moves toward the discharge pipe under the restriction of the baffle block, the trigger frame will not move. When the sliding plate continues to move toward the discharge pipe, after the first blocking plate reduces the size of the opening in the discharge pipe, the limiting plate on the sliding plate will contact with the obliquely arranged front end of the blocking frame. Since the limiting plate is wedge-shaped and the front end of the blocking frame is inclined, the blocking frame can be deflected on the positioning rod. After the frame is deflected, the block on the blocking frame will no longer hinder the trigger frame, and the connecting spring between the trigger frame and the sliding plate will drive the trigger frame to quickly extend toward the direction of the discharge pipe, so that the second blocking plate quickly moves toward the discharge pipe, contacts the inner wall of the discharge pipe to block the discharge pipe. Through this arrangement, the flow rate of concrete in the discharge pipe is first reduced by the first blocking plate, and then the discharge pipe is quickly blocked by the second blocking plate, so that when the concrete reaches the required layout amount, the opening of the discharge pipe can be closed in time to prevent the concrete from continuously flowing out of the discharge pipe to the outside layout.

[0024] In the present invention, when the trigger frame drives the second blocking plate to quickly block the opening in the discharge pipe, the second blocking plate moves toward the direction of the discharge pipe, and the pressure plate arranged on the second blocking plate moves toward the direction of the discharge pipe synchronously, and the side of the pressure plate opposite to the supporting plate contacts the cross section of the wedge-shaped block, thereby synchronously driving the supporting plate to slide on the annular frame. When the supporting plate slides, the hinged frames on both sides of the supporting plate will drive the sliding rod to move in the arc groove on the annular frame. At this time, the cleaning scraper on the sliding rod will move in an arc shape, so that the scraping frame will scrape the inner wall of the discharge pipe below the second blocking plate. Since the first blocking plate reduces the flow rate of concrete in the discharge pipe, it is convenient for the scraping frame to clean the discharge pipe The inner wall of the discharge pipe is scraped by the scraping frame, and the entire arc-shaped inner wall of the discharge pipe is not needed to be cleaned. After the scraping frame scrapes the inner wall of the discharge pipe below the second sealing plate, the second sealing plate continues to move downward, and the wedge-shaped block on the supporting plate will contact the inclined surface of the inclined side plate, thereby shrinking the wedge-shaped block. The shrinking wedge-shaped block will quickly reset the supporting plate driven by the reset spring. At this time, the second sealing plate will seal the cleaned inner wall of the discharge pipe, and the inner wall of the discharge pipe is cleaned first by the scraping frame, and the concrete under the second sealing plate is wiped to prevent the stone impurities contained in the concrete from making the second sealing plate unable to effectively contact the inner wall of the discharge pipe, so that the second sealing plate effectively blocks the discharge pipe.

[0025] In the present invention, when concrete needs to be distributed again after one distribution, the transmission is adjusted so that the servo motor can drive the spiral rod to quickly reset the moving frame away from the blocking device when it rotates. Because the clamping block and the bayonet are continuously in a clamping state, the first blocking plate and the second blocking plate continue to block the discharge pipe during this process. Then the operator separates the clamping block from the bayonet, and the transmission frame is reset to rotate the rotating gear, thereby resetting the sliding plate to pull the first blocking plate out of the discharge pipe. During the movement of the sliding plate, the trigger frame is synchronously driven to move by the connecting spring, thereby resetting the second blocking plate. Because the baffle on the trigger frame is inclined, it will not cause obstruction when it contacts the blocking frame, so that the quantitative distribution of concrete can be continuously carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 It is a three-dimensional structural cross-sectional view of the conveying device and the transmission device of the present invention;

[0028] Figure 3 It is a partial three-dimensional structural sectional view of the transmission device of the present invention;

[0029] Figure 4 It is a partial three-dimensional structural schematic diagram of the blocking device and the transmission device of the present invention;

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the blocking device of the present invention;

[0031] Figure 6 It is a three-dimensional structural cross-sectional view of the blocking device and the cleaning device of the present invention;

[0032] Figure 7 The three-dimensional structure of the cleaning device of the present invention is shown in FIG. Figure 1 ;

[0033] Figure 8 The three-dimensional structure of the cleaning device of the present invention is shown in FIG. Figure 2 ;

[0034] Fig. 9 It is a partial three-dimensional structural cross-sectional view of the blocking device and the cleaning device of the present invention.

[0035] In the figure: 1. Laying frame; 11. Conveying pipeline; 12. Hopper; 13. Discharging pipeline; 14. Carrying box; 2. Conveying device; 21. Servo motor; 22. Driving rod; 23. Conveying auger; 3. Transmission device; 31. Transmission gear; 32. Transmission rod; 33. Transmission plate; 34. Driving plate; 35. Transmission belt; 36. Screw rod; 37. Fixed rod; 38. Moving frame; 39. Transmission frame; 310. Rifle rod; 311. Rotating gear; 312. Pressure spring; 313. Clamping block; 314. Bayonet; 4. Blocking device; 41 , sliding plate; 42, latching teeth; 43, first blocking plate; 431, sliding groove; 44, trigger frame; 441, baffle; 45, connecting spring; 46, positioning rod; 47, blocking frame; 471, block; 48, torsion spring; 49, limit plate; 410, second blocking plate; 5, cleaning device; 51, annular frame; 52, arc groove; 53, sliding rod; 54, cleaning scraper; 55, scraping frame; 56, bearing plate; 57, hinged frame; 58, reset spring; 59, wedge-shaped block; 510, pressure plate; 511, inclined side plate; 512, positioning plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 9The present invention provides a technical solution: a concrete conveying device, comprising a horizontally arranged layout frame 1, a conveying pipe 11 is arranged on the layout frame 1, a hopper 12 is arranged on the top of the conveying pipe 11, a conveying device 2 is arranged on the conveying pipe 11, the conveying device 2 is rotatably matched with the conveying pipe 11, and the discharge end of the conveying pipe 11 is connected with a discharge pipe 13, a carrying box 14 is also arranged on the top of the layout frame 1, a transmission device 3 is arranged in the carrying box 14, the transmission device 3 is in transmission cooperation with the conveying device 2, a blocking device 4 is arranged on the side of the carrying box 14 facing the discharge pipe 13, the blocking device 4 extends into the discharge pipe 13 below, the blocking device 4 is slidably matched with the discharge pipe 13, and a cleaning device 5 is also arranged on the inner wall of the discharge pipe 13, and the cleaning device 5 is in contact with the blocking device 4.

[0038] In this embodiment, Figure 1 and Figure 2 As shown, the conveying device 2 includes a servo motor 21, a driving rod 22 and a conveying auger 23. The servo motor 21 is arranged on the side wall of the conveying pipe 11 away from the discharge pipe 13. The driving rod 22 is transmission-connected to the main shaft of the servo motor 21. The driving rod 22 is rotationally matched with the side wall of the conveying pipe 11. The conveying auger 23 is fixedly connected to the driving rod 22, and the conveying auger 23 is arranged in the conveying pipe 11.

[0039] When distributing concrete, concrete is put into the conveying pipe 11 through the hopper 12 on the conveying pipe 11. At this time, the servo motor 21 drives the driving rod 22 to rotate, and the driving rod 22 drives the conveying auger 23 to rotate. The conveying auger 23 transports the concrete in the conveying pipe 11 toward the discharge pipe 13, so that the concrete is transported to the concrete distribution point through the discharge pipe 13, thereby realizing the concrete distribution operation.

[0040] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the transmission device 3 includes a transmission 31, a transmission rod 32, a transmission disc 33, a drive disc 34, a transmission belt 35, a spiral rod 36, a movable frame 38, a transmission frame 39, a rifle rod 310, a rotating gear 311 and a pressure spring 312. The transmission 31 is arranged on the side wall of the carrying box 14 away from the blocking device 4. The transmission rod 32 is connected to the input shaft of the transmission 31, the transmission disc 33 is fixedly connected to the transmission rod 32, the drive disc 34 is fixedly connected to the drive rod 22, the transmission belt 35 is sleeved between the transmission disc 33 and the drive disc 34, the spiral rod 36 is arranged on the output shaft of the transmission 31, the spiral rod 36 extends toward the direction of the blocking device 4, and the spiral rod 36 is rotatably matched with the carrying box 14. The upper and lower ends on both sides of the inner wall of the carrying box 14 are fixedly connected by fixing rods 37. The movable frame 38 is spirally arranged on the spiral rod 36. The frame 38 is slidably matched with the two fixed rods 37, and a transmission frame 39 is also slidably arranged on the inner wall of the carrying box 14, the rifle rod 310 is fixedly connected to the transmission frame 39, the rotating gear 311 is arranged on the side wall of the carrying box 14 facing the discharge pipe 13, and the rotating gear 311 is rotatably matched with the carrying box 14, the rifle rod 310 is arranged in the direction of the rotating gear 311, and the inner wall of the rotating gear 311 is provided with a spiral line spirally matched with the rifle rod 310, a pressure spring 312 is sleeved on the rifle rod 310, and the two ends of the pressure spring 312 are respectively connected to the transmission frame 39 and the inner wall of the carrying box 14, the transmission frame 39 is in contact with the side opposite to the moving frame 38, and a clamping block 313 is arranged on the side of the transmission frame 39 opposite to the moving frame 38, and the clamping block 313 is elastically arranged, and a bayonet 314 corresponding to the clamping block 313 is arranged on the carrying box 14;

[0041] When the driving rod 22 rotates, the driving rod 22 will drive the driving disc 34 to rotate. The rotation of the driving disc 34 causes the transmission belt 35 to drive the transmission disc 33 to rotate. When the transmission disc 33 rotates, it is connected to the input shaft of the transmission 31. Subsequently, the screw rod 36 on the output shaft is rotated under the drive of the transmission 31. The rotation of the screw rod 36 causes the moving frame 38 to slowly move toward the direction of the blocking device 4. After the moving frame 38 contacts the opposite side of the transmission frame 39, the transmission frame 39 will move toward the direction of the blocking device 4. The rifle rod 310 on the transmission frame 39 moves linearly. The rifle rod 310 drives the rotating gear 311 to rotate through the spiral line between the rifle rod 310 and the rotating gear 311. The rotation of the rotating gear 311 will gradually drive the blocking device 4 to move toward the direction of the discharge pipe 13, so as to facilitate the subsequent blocking of the discharge pipe 13. When the clamping block 313 on the transmission frame 39 is docked with the bayonet 314 on the carrying box 14, the blocking device 4 will completely block the discharge pipe 13, thereby achieving the required amount of concrete.

[0042] In this embodiment, Figure 4 , Figure 5 and Figure 6As shown, the blocking device 4 includes a sliding plate 41 and a first blocking plate 43. The sliding plate 41 is arranged on the side wall of the carrying box 14 facing the discharge pipe 13, and the sliding plate 41 and the carrying box 14 are slidably matched. The side wall of the sliding plate 41 facing the rotating gear 311 is provided with a latching tooth 42 meshing with the rotating gear 311. The sliding plate 41 is extended toward the discharge pipe 13 and is provided with a first blocking plate 43. The first blocking plate 43 and the discharge pipe 13 are slidably matched.

[0043] A slide groove 431 is provided on the side wall of the sliding plate 41 facing the discharge pipe 13, a trigger frame 44 is slidably provided in the slide groove 431, a connecting spring 45 is provided between the trigger frame 44 and the sliding plate 41, a positioning rod 46 is fixedly connected to the side wall of the carrying box 14 facing the discharge pipe 13, a blocking frame 47 is rotatably connected to the positioning rod 46, a torsion spring 48 is provided between the blocking frame 47 and the positioning rod 46, the blocking frame 47 is located above the slide groove 431, and a trigger frame 44 is fixedly provided on the side opposite to the blocking frame 47. The baffle 441 is tilted on one side, and a baffle 471 is provided on the side of the blocking frame 47 opposite to the baffle 441, and the baffle 441 abuts against the baffle 471. The sliding plate 41 is provided with a side wall of a slide groove 431 fixedly connected to a limit plate 49, and the limit plate 49 is wedge-shaped, and the end of the blocking frame 47 facing the limit plate 49 is tilted, and the trigger frame 44 is extended toward the direction of the discharge pipe 13 and provided with a second blocking plate 410, and the second blocking plate 410 is slidably matched with the discharge pipe 13;

[0044] When the transmission frame 39 moves toward the blocking device 4, the transmission frame 39 drives the rifle rod 310 to move linearly, which causes the rotating gear 311 to rotate continuously. The rotating gear 311 rotates and contacts the latching teeth 42 on the sliding plate 41, so that the sliding plate 41 moves continuously toward the discharge pipe 13. The first blocking plate 43 disposed on the sliding plate 41 toward the discharge pipe 13 gradually reduces the opening of the discharge pipe 13, so that the flow of concrete flowing into the discharge pipe 13 is gradually reduced, thereby preventing the subsequent second blocking plate 410 from completely blocking the inner wall of the discharge pipe 13.

[0045] When the sliding plate 41 moves toward the discharge pipe 13, the baffle 441 provided on the trigger frame 44 will conflict with the baffle 471 provided on the opposite side of the blocking frame 47, and the baffle 471 limits the movement of the baffle 441, so that when the sliding plate 41 moves toward the discharge pipe 13 under the restriction of the baffle 471, the trigger frame 44 will not move. When the sliding plate 41 continues to move toward the discharge pipe 13, after the first blocking plate 43 reduces the size of the opening in the discharge pipe 13, the limiting plate 49 on the sliding plate 41 will contact the inclined front end of the blocking frame 47. Since the limiting plate 49 is wedge-shaped and the front end of the blocking frame 47 is inclined, the blocking frame 47 can be deflected on the positioning rod 46. When the blocking frame 47 is deflected, the block 471 on the blocking frame 47 will no longer hinder the trigger frame 44, and the connecting spring 45 between the trigger frame 44 and the sliding plate 41 will drive the trigger frame 44 to quickly extend toward the discharge pipe 13, so that the second blocking plate 410 quickly moves toward the discharge pipe 13, contacts the inner wall of the discharge pipe 13 to block the discharge pipe 13. Through this arrangement, the flow rate of concrete in the discharge pipe 13 is first reduced by the first blocking plate 43, and then the discharge pipe 13 is quickly blocked by the second blocking plate 410, so that when the concrete reaches the required layout amount, the opening of the discharge pipe 13 can be closed in time to prevent the concrete from continuously flowing out of the discharge pipe 13 to the outside layout.

[0046] In this embodiment, Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the cleaning device 5 includes an annular frame 51 and a supporting plate 56. The annular frame 51 is fixedly arranged on the inner wall of the discharge pipe 13. The two side walls of the annular frame 51 are respectively arranged toward the second sealing plate 410 and the discharge port of the discharge pipe 13. The supporting plate 56 is arranged on the side wall of the annular frame 51 away from the second sealing plate 410. The annular frame 51 is provided with an arc groove 52 symmetrically arranged with the supporting plate 56. Sliding rods 53 are slidably arranged in the two arc grooves 52. The sliding rods 53 are provided with a cleaning scraper 54 facing the direction of the second sealing plate 410. The cleaning scraper 54 is hingedly provided with a scraping frame 55. The scraping frame 55 is elastically arranged. The scraping frame 55 extends toward the position of the second sealing plate 410 and contacts with the inner wall of the discharge pipe 13 below the second sealing plate 410. The scraping frame 55 is inclined.

[0047] The side walls of the carrying plate 56 facing the two arc-shaped grooves 52 are hinged with hinged frames 57, and one end of the hinged frame 57 away from the carrying plate 56 is hingedly matched with the sliding rod 53. A positioning plate 512 is fixedly arranged on the side wall of the annular frame 51 on which the carrying plate 56 is arranged. The positioning plate 512 is located below the carrying plate 56, and a return spring 58 is arranged between the positioning plate 512 and the carrying plate 56.

[0048] The second sealing plate 410 is provided with a pressure plate 510 extending in the direction of the annular frame 51, the bearing plate 56 is slidably matched with the discharge pipe 13 and extends in the direction of the pressure plate 510, and a wedge-shaped block 59 is provided on the side wall of the bearing plate 56 facing the pressure plate 510. The wedge-shaped block 59 is elastically arranged, and the pressure plate 510 is in contact with the wedge-shaped block 59. The top of the discharge pipe 13 is provided with an inclined side plate 511 abutting against the wedge-shaped block 59, and the inclined surface of the inclined side plate 511 is in contact with the inclined surface of the wedge-shaped block 59.

[0049] When the trigger frame 44 drives the second blocking plate 410 to quickly block the opening in the discharge pipe 13, the second blocking plate 410 moves toward the discharge pipe 13, and the pressure plate 510 arranged on the second blocking plate 410 moves toward the discharge pipe 13 synchronously. The side opposite to the pressure plate 510 and the supporting plate 56 contacts the cross section of the wedge-shaped block 59, thereby synchronously driving the supporting plate 56 to slide on the annular frame 51. When the supporting plate 56 slides, the hinged frames 57 on both sides of the supporting plate 56 will drive the sliding rod 53 to move in the arc groove 52 on the annular frame 51. At this time, the cleaning scraper 54 on the sliding rod 53 will move in an arc shape, so that the scraping frame 55 will scrape the inner wall of the discharge pipe 13 below the second blocking plate 410. Since the first blocking plate 43 reduces the flow rate of concrete in the discharge pipe 13, it is convenient for the scraping frame 55 to scrape the discharge pipe 13. The inner wall of the material pipe 13 is scraped and swept, and there is no need to clean the entire arc-shaped inner wall of the discharge pipe 13. After the scraping frame 55 scrapes the inner wall of the discharge pipe 13 below the second blocking plate 410, the second blocking plate 410 continues to move downward, and the wedge-shaped block 59 on the supporting plate 56 will contact the inclined surface of the inclined side plate 511, thereby shrinking the wedge-shaped block 59. The shrinking wedge-shaped block 59 will quickly reset the supporting plate 56 under the drive of the reset spring 58. At this time, the second blocking plate 410 will block the inner wall of the discharge pipe 13 after cleaning. The inner wall of the discharge pipe 13 is first cleaned by the scraping frame 55, and the concrete below the second blocking plate 410 is wiped to prevent the stone impurities contained in the concrete from preventing the second blocking plate 410 from effectively contacting the inner wall of the discharge pipe 13, so that the second blocking plate 410 effectively blocks the discharge pipe 13.

[0050] The scraping frame 55 hingedly arranged on the cleaning scraper 54 is arranged in an inclined manner. When the bearing plate 56 drives the hinged frame 57 to make the two cleaning scrapers 54 move relatively, the two scraping frames 55 gather the concrete along the inner wall of the discharge pipe 13. At this time, the scraping frame 55 hingedly arranged on the cleaning scraper 54 will deflect and squeeze the concrete between the scraping frames 55 out from under the second blocking plate 410, so that the second blocking plate 410 can block the discharge pipe 13.

[0051] When the concrete needs to be distributed again after one distribution, the transmission 31 is adjusted to make the servo motor 21 rotate to drive the screw rod 36 to quickly reset the moving frame 38 away from the blocking device 4. Because the clamping block 313 and the bayonet 314 are continuously in the clamping state, the first blocking plate 43 and the second blocking plate 410 continue to block the discharge pipe 13 during this process. Then the operator separates the clamping block 313 from the bayonet 314, and the transmission frame 39 is reset to rotate the rotating gear 311, thereby resetting the sliding plate 41 to pull the first blocking plate 43 out of the discharge pipe 13. During the movement of the sliding plate 41, the trigger frame 44 is synchronously driven to move by the connecting spring 45, thereby resetting the second blocking plate 410. Because the baffle 441 on the trigger frame 44 is inclined, it will not cause obstruction when it contacts the blocking frame 47, so that the quantitative distribution of concrete can be continuously carried out.

[0052] The use method and advantages of the present invention: The use method of the concrete conveying device, the working process is as follows:

[0053] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown:

[0054] S1: When distributing concrete, concrete is put into the conveying pipe 11 through the hopper 12 on the conveying pipe 11, and the servo motor 21 drives the driving rod 22 to rotate, and the driving rod 22 drives the conveying auger 23 to rotate, and the conveying auger 23 conveys the concrete in the conveying pipe 11 toward the discharge pipe 13;

[0055] S2: When the driving rod 22 rotates, the driving rod 22 will drive the driving disc 34 to rotate. The rotation of the driving disc 34 causes the transmission belt 35 to drive the transmission disc 33 to rotate. When the transmission disc 33 rotates, it is connected to the input shaft of the transmission 31. Then, driven by the transmission 31, the spiral rod 36 on the output shaft rotates. The rotation of the spiral rod 36 causes the moving frame 38 to slowly move toward the direction of the blocking device 4. After the moving frame 38 contacts the opposite side of the transmission frame 39, the transmission frame 39 will move toward the direction of the blocking device 4. The rifle rod 310 on the transmission frame 39 moves linearly. The rifle rod 310 drives the rotating gear 311 to rotate through the spiral line between the rifle rod 310 and the rotating gear 311. The rotation of the rotating gear 311 will gradually drive the blocking device 4 to move toward the direction of the discharge pipe 13, so as to facilitate the subsequent blocking of the discharge pipe 13. When the clamping block 313 on the transmission frame 39 is docked with the clamping port 314 on the carrying box 14, the blocking device 4 will completely block the discharge pipe 13, thereby achieving the required amount of concrete.

[0056] S3: When the transmission frame 39 moves toward the blocking device 4, the transmission frame 39 drives the rifle rod 310 to move linearly, which causes the rotating gear 311 to rotate continuously. The rotating gear 311 rotates and contacts the latching teeth 42 on the sliding plate 41, so that the sliding plate 41 moves continuously toward the discharge pipe 13. The first blocking plate 43 disposed on the sliding plate 41 toward the discharge pipe 13 gradually reduces the opening of the discharge pipe 13, so that the flow of concrete flowing into the discharge pipe 13 is gradually reduced, thereby preventing the subsequent second blocking plate 410 from completely blocking the inner wall of the discharge pipe 13.

[0057] S4: When the sliding plate 41 moves toward the discharge pipe 13, the baffle 441 provided on the trigger frame 44 will conflict with the baffle 471 provided on the opposite side of the blocking frame 47, and the baffle 471 limits the movement of the baffle 441, so that when the sliding plate 41 moves toward the discharge pipe 13 under the restriction of the baffle 471, the trigger frame 44 will not move. When the sliding plate 41 continues to move toward the discharge pipe 13, after the first blocking plate 43 reduces the size of the opening in the discharge pipe 13, the limiting plate 49 on the sliding plate 41 will contact with the blocking frame 47. The inclined front end portion contacts, because the limit plate 49 is wedge-shaped and the front end portion of the blocking frame 47 is inclined, the blocking frame 47 can be deflected on the positioning rod 46. After the blocking frame 47 is deflected, the stopper 471 on the blocking frame 47 will no longer hinder the trigger frame 44, and the connecting spring 45 between the trigger frame 44 and the sliding plate 41 will drive the trigger frame 44 to quickly extend toward the direction of the discharge pipe 13, so that the second blocking plate 410 quickly moves toward the discharge pipe 13, contacts the inner wall of the discharge pipe 13 and blocks the discharge pipe 13;

[0058] S5: When the trigger frame 44 drives the second blocking plate 410 to quickly block the opening in the discharge pipe 13, the second blocking plate 410 moves toward the discharge pipe 13, and the pressing plate 510 arranged on the second blocking plate 410 moves toward the discharge pipe 13 synchronously, and the side of the pressing plate 510 opposite to the carrier plate 56 contacts the cross section of the wedge-shaped block 59, thereby synchronously driving the carrier plate 56 to slide on the annular frame 51. When the carrier plate 56 slides, the hinged frames 57 on both sides of the carrier plate 56 will drive the sliding rod 53 to move in the arc groove 52 on the annular frame 51. At this time, the cleaning scraper 54 on the sliding rod 53 will move in an arc shape, so that the scraping frame 55 can close the second blocking plate 41. 0, because the first blocking plate 43 reduces the flow of concrete in the discharging pipe 13, it is convenient for the scraping frame 55 to scrape the inner wall of the discharging pipe 13, and there is no need to clean the entire arc-shaped inner wall of the discharging pipe 13. After the scraping frame 55 scrapes the inner wall of the discharging pipe 13 below the second blocking plate 410, the second blocking plate 410 continues to move downward, and the wedge-shaped block 59 on the bearing plate 56 will contact the inclined surface of the inclined side plate 511, thereby shrinking the wedge-shaped block 59. The shrinking wedge-shaped block 59 will quickly reset the bearing plate 56 under the drive of the reset spring 58, and at this time, the second blocking plate 410 will block the inner wall of the discharging pipe 13 after cleaning;

[0059] S6: The scraping frame 55 hingedly arranged on the cleaning scraper 54 is arranged in an inclined manner. When the bearing plate 56 drives the hinged frame 57 to make the two cleaning scrapers 54 move relatively, the two scraping frames 55 gather the concrete along the inner wall of the discharge pipe 13. At this time, the scraping frame 55 hingedly arranged on the cleaning scraper 54 will deflect and squeeze the concrete between the scraping frames 55 out from under the second blocking plate 410, so that the second blocking plate 410 can block the discharge pipe 13.

[0060] S7: When concrete needs to be distributed again after one distribution, the transmission 31 is adjusted to make the servo motor 21 rotate to drive the screw rod 36 to quickly reset the moving frame 38 away from the blocking device 4. Because the clamping block 313 and the bayonet 314 are continuously in a clamping state, the first blocking plate 43 and the second blocking plate 410 continue to block the discharge pipe 13 during this process. Then the operator separates the clamping block 313 from the bayonet 314, and the transmission frame 39 is reset to rotate the rotating gear 311, thereby resetting the sliding plate 41 to pull the first blocking plate 43 out of the discharge pipe 13. During the movement of the sliding plate 41, the trigger frame 44 is synchronously driven to move by the connecting spring 45, thereby resetting the second blocking plate 410. Because the baffle 441 on the trigger frame 44 is inclined, it will not cause obstruction when it contacts the blocking frame 47, so that the quantitative distribution of concrete can be continuously carried out.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A concrete conveying device, characterized in that: The invention comprises a horizontally arranged laying frame (1), wherein a conveying pipe (11) is arranged on the laying frame (1), a hopper (12) is arranged on the top of the conveying pipe (11), a conveying device (2) is arranged on the conveying pipe (11), the conveying device (2) is rotatably matched with the conveying pipe (11), the discharge end of the conveying pipe (11) is connected to the discharge pipe (13), a bearing box (14) is also arranged on the top of the laying frame (1), a transmission device (3) is arranged in the bearing box (14), the transmission device (3) is in transmission match with the conveying device (2), a blocking device (4) is arranged on the side of the bearing box (14) facing the discharge pipe (13), the blocking device (4) extends toward the discharge pipe (13) below, the blocking device (4) is slidably matched with the discharge pipe (13), and a cleaning device (5) is also arranged on the inner wall of the discharge pipe (13), the cleaning device (5) is in contact match with the blocking device (4); The conveying device (2) comprises a servo motor (21), a driving rod (22) and a conveying auger (23); the servo motor (21) is arranged on a side wall of the conveying pipe (11) at one end away from the discharge pipe (13); the driving rod (22) is drivingly connected to the main shaft of the servo motor (21); the driving rod (22) is rotatably matched with the side wall of the conveying pipe (11); the conveying auger (23) is fixedly connected to the driving rod (22), and the conveying auger (23) is arranged in the conveying pipe (11); The transmission device (3) comprises a transmission (31), a transmission rod (32), a transmission disc (33), a drive disc (34), a transmission belt (35), a screw rod (36), a moving frame (38), a transmission frame (39), a rifle rod (310), a rotating gear (311) and a pressure spring (312); the transmission (31) is arranged on a side wall of a bearing box (14) away from the blocking device (4); the transmission rod (32) is connected to an input shaft of the transmission (31); and the transmission disc (33) is fixedly connected to the transmission rod (32). ), the driving disc (34) is fixedly connected to the driving rod (22), the transmission belt (35) is sleeved between the transmission disc (33) and the driving disc (34), the spiral rod (36) is arranged on the output shaft of the transmission (31), the spiral rod (36) extends in the direction of the blocking device (4), and the spiral rod (36) is rotationally matched with the bearing box (14), the upper and lower ends of the inner wall of the bearing box (14) are fixedly connected by fixing rods (37), and the moving frame (38) is spirally arranged on the spiral rod (36). The movable frame (38) is slidably matched with the two fixed rods (37); a transmission frame (39) is slidably provided on the inner wall of the carrying box (14); the rifle rod (310) is fixedly connected to the transmission frame (39); the rotating gear (311) is provided on the side wall of the carrying box (14) facing the discharge pipe (13); and the rotating gear (311) is rotatably matched with the carrying box (14); the rifle rod (310) is provided in the direction of the rotating gear (311); and the inner wall of the rotating gear (311) is provided with a gear that is engaged with the rifle rod (310); 0) spirally matched spiral wire, the pressure spring (312) is sleeved on the rifle rod (310), and the two ends of the pressure spring (312) are respectively connected to the inner wall of the transmission frame (39) and the bearing box (14), the transmission frame (39) is in contact with the side opposite to the moving frame (38), and the transmission frame (39) is provided with a clamping block (313) on the side opposite to the moving frame (38), the clamping block (313) is elastically arranged, and the bearing box (14) is provided with a clamping port (314) arranged corresponding to the clamping block (313).

2. A concrete conveying device according to claim 1, characterized in that: The blocking device (4) comprises a sliding plate (41) and a first blocking plate (43); the sliding plate (41) is arranged on a side wall of the carrying box (14) facing the discharge pipe (13), and the sliding plate (41) and the carrying box (14) are slidably matched; a latching tooth (42) meshing with the rotating gear (311) is arranged on the side wall of the sliding plate (41) facing the rotating gear (311); the sliding plate (41) is extended in the direction of the discharge pipe (13) and is provided with the first blocking plate (43); the first blocking plate (43) and the discharge pipe (13) are slidably matched.

3. A concrete conveying device according to claim 2, characterized in that: A slide groove (431) is provided on the side wall of the sliding plate (41) facing the discharge pipe (13), a trigger frame (44) is slidably arranged in the slide groove (431), a connecting spring (45) is arranged between the trigger frame (44) and the sliding plate (41), a positioning rod (46) is fixedly connected to the side wall of the carrying box (14) facing the discharge pipe (13), a blocking frame (47) is rotatably connected to the positioning rod (46), a torsion spring (48) is arranged between the blocking frame (47) and the positioning rod (46), the blocking frame (47) is located above the slide groove (431), and a trigger frame (44) is fixedly arranged on the side opposite to the blocking frame (47). A baffle (441) is provided, one side of the baffle (441) is arranged in an inclined manner, a baffle (471) is provided on a side of the blocking frame (47) opposite to the baffle (441), the baffle (441) abuts against the baffle (471), a limiting plate (49) is fixedly connected to the side wall of the sliding plate (41) provided with a sliding groove (431), the limiting plate (49) is arranged in a wedge shape, one end of the blocking frame (47) facing the limiting plate (49) is arranged in an inclined manner, and a second blocking plate (410) is extended from the trigger frame (44) in the direction of the discharge pipe (13), and the second blocking plate (410) is slidably matched with the discharge pipe (13).

4. A concrete conveying device according to claim 3, characterized in that: The cleaning device (5) comprises an annular frame (51) and a bearing plate (56); the annular frame (51) is fixedly arranged on the inner wall of the discharge pipe (13); two side walls of the annular frame (51) are arranged towards the second blocking plate (410) and the discharge port of the discharge pipe (13), respectively; the bearing plate (56) is arranged on the side wall of the annular frame (51) away from the second blocking plate (410); and an arc-shaped groove (52) symmetrically arranged with the bearing plate (56) is provided on the annular frame (51). A sliding rod (53) is slidably arranged in each of the two arc-shaped grooves (52); a cleaning scraper (54) is arranged on the sliding rod (53) in a direction facing the second sealing plate (410); a scraper frame (55) is hingedly arranged on the cleaning scraper (54); the scraper frame (55) is elastically arranged; the scraper frame (55) extends toward the position of the second sealing plate (410) and contacts the inner wall of the discharge pipe (13) below the second sealing plate (410); and the scraper frame (55) is inclined.

5. A concrete conveying device according to claim 4, characterized in that: The side walls of the bearing plate (56) facing the two arc-shaped grooves (52) are hingedly connected with hinged frames (57); one end of the hinged frame (57) away from the bearing plate (56) is hingedly matched with the sliding rod (53); a positioning plate (512) is fixedly arranged on the side wall of the annular frame (51) on which the bearing plate (56) is arranged; the positioning plate (512) is located below the bearing plate (56); and a return spring (58) is arranged between the positioning plate (512) and the bearing plate (56).

6. A concrete conveying device according to claim 4, characterized in that: The second blocking plate (410) is provided with a pressing plate (510) extending in the direction of the annular frame (51); the bearing plate (56) is slidably matched with the discharge pipe (13) and the bearing plate (56) extends in the direction of the pressing plate (510); a wedge-shaped block (59) is provided on the side wall of the bearing plate (56) facing the pressing plate (510); the wedge-shaped block (59) is elastically provided; the pressing plate (510) abuts against the wedge-shaped block (59); and an inclined side plate (511) abutting against the wedge-shaped block (59) is provided at the top of the discharge pipe (13); the inclined surface of the inclined side plate (511) is in contact with the inclined surface of the wedge-shaped block (59).

7. A method for using a concrete conveying device according to claim 6, comprising the following steps: S1: When distributing concrete, concrete is put into the conveying pipe (11) through the hopper (12) on the conveying pipe (11), and the servo motor (21) drives the driving rod (22) to rotate, and the driving rod (22) drives the conveying auger (23) to rotate, and the conveying auger (23) conveys the concrete in the conveying pipe (11) toward the discharge pipe (13), so that the concrete is transported to the concrete distribution point through the discharge pipe (13); S2: When the driving rod (22) rotates, the driving rod (22) drives the driving disc (34) to rotate. The driving disc (34) rotates, causing the transmission belt (35) to drive the transmission disc (33) to rotate. When the transmission disc (33) rotates, it is connected to the input shaft of the transmission (31). Then, driven by the transmission (31), the spiral rod (36) on the output shaft rotates. The rotation of the spiral rod (36) causes the moving frame (38) to slowly move toward the blocking device (4). When the moving frame (38) contacts the opposite side of the transmission frame (39), the transmission frame (39) moves toward the blocking device (4). The driving frame (39) moves in a straight line, and the driving frame (39) drives the rotating gear (311) to rotate through the spiral line between the driving frame (310) and the rotating gear (311). The rotating gear (311) gradually drives the blocking device (4) to move in the direction of the discharge pipe (13), so as to facilitate the subsequent blocking of the discharge pipe (13). When the clamping block (313) on the driving frame (39) is connected with the clamping port (314) on the carrying box (14), the blocking device (4) completely blocks the discharge pipe (13), and the required distribution amount of concrete is achieved; S3: When the transmission frame (39) moves toward the blocking device (4), the transmission frame (39) drives the rifle rod (310) to move linearly, which causes the rotating gear (311) to rotate continuously. The rotating gear (311) contacts the latching teeth (42) on the sliding plate (41), thereby causing the sliding plate (41) to move continuously toward the discharge pipe (13). The first blocking plate (43) disposed on the sliding plate (41) toward the discharge pipe (13) gradually reduces the opening of the discharge pipe (13); S4: When the sliding plate (41) moves toward the discharge pipe (13), the baffle (441) provided on the trigger frame (44) will abut against the baffle (471) provided on the opposite side of the blocking frame (47), and the baffle (471) limits the movement of the baffle (441), so that when the sliding plate (41) moves toward the discharge pipe (13) under the restriction of the baffle (471), the trigger frame (44) will not move. When the sliding plate (41) continues to move toward the discharge pipe (13), after the first blocking plate (43) reduces the size of the opening in the discharge pipe (13), the limiting plate (49) on the sliding plate (41) will abut against the blocking frame (471). 7) The front end portion of the inclined setting is in contact. Since the limit plate (49) is set in a wedge shape and the front end portion of the blocking frame (47) is set in an inclined manner, the blocking frame (47) can be deflected on the positioning rod (46). After the blocking frame (47) is deflected, the block (471) on the blocking frame (47) will no longer hinder the trigger frame (44), and the connecting spring (45) between the trigger frame (44) and the sliding plate (41) will drive the trigger frame (44) to quickly extend in the direction of the discharge pipe (13), so that the second blocking plate (410) quickly moves into the discharge pipe (13) and contacts the inner wall of the discharge pipe (13) to block the discharge pipe (13); S5: When the trigger frame (44) drives the second blocking plate (410) to quickly block the opening in the discharge pipe (13), the second blocking plate (410) moves toward the discharge pipe (13), and the pressure plate (510) provided on the second blocking plate (410) moves synchronously toward the discharge pipe (13). The side of the pressure plate (510) opposite to the carrier plate (56) contacts the cross section of the wedge-shaped block (59), thereby synchronously driving the carrier plate (56) to slide on the annular frame (51). When the carrier plate (56) slides, the hinged frames (57) on both sides of the carrier plate (56) drive the sliding rod (53) to move in the arc groove (52) on the annular frame (51). At this time, the cleaning scraper (54) on the sliding rod (53) moves in an arc shape, so that the scraping frame (55) moves the second blocking plate. The inner wall of the discharge pipe (13) below the second sealing plate (410) is scraped and swept. Since the first blocking plate (43) reduces the flow of concrete in the discharge pipe (13), it is convenient for the scraping frame (55) to scrape and sweep the inner wall of the discharge pipe (13), and there is no need to clean the entire arc-shaped inner wall of the discharge pipe (13). After the scraping frame (55) scrapes and sweeps the inner wall of the discharge pipe (13) below the second blocking plate (410), the second blocking plate (410) continues to move downward, and the wedge-shaped block (59) on the bearing plate (56) contacts the inclined surface of the inclined side plate (511), thereby causing the wedge-shaped block (59) to shrink. The shrinking wedge-shaped block (59) will quickly reset the bearing plate (56) under the drive of the reset spring (58), and at this time, the second blocking plate (410) will block the inner wall of the discharge pipe (13) after cleaning; S6: The scraping frame (55) hingedly arranged on the cleaning scraper (54) is arranged in an inclined manner. When the bearing plate (56) drives the hinged frame (57) to move the two cleaning scrapers (54) relative to each other, the two scraping frames (55) gather the concrete along the inner wall of the discharge pipe (13) toward the center. At this time, the scraping frame (55) hingedly arranged on the cleaning scraper (54) will deflect and squeeze the concrete between the scraping frames (55) out from under the second blocking plate (410), so that the second blocking plate (410) can block the discharge pipe (13); S7: When concrete is distributed once and needs to be distributed again, the transmission (31) is adjusted so that the servo motor (21) can drive the screw rod (36) to quickly reset the movable frame (38) away from the blocking device (4). Since the clamping block (313) and the clamping port (314) are continuously in a clamping state, the first blocking plate (43) and the second blocking plate (410) continue to block the discharge pipe (13) during this process. Then, the operator makes the clamping block (313) and the clamping port (314) After the transmission frame (39) is reset, the rotating gear (311) is rotated, thereby resetting the sliding plate (41) to pull the first blocking plate (43) out of the discharge pipe (13). During the movement of the sliding plate (41), the trigger frame (44) is synchronously driven to move via the connecting spring (45), thereby resetting the second blocking plate (410). Since the baffle (441) on the trigger frame (44) is inclined, it will not cause any obstruction when contacting the blocking frame (47), thereby continuously carrying out quantitative placement of concrete.

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