Outlet switch device for pump pipe of concrete pump truck

Abstract

The utility model relates to the technical field of concrete pouring, in particular to an outlet switching device for a pump pipe of a concrete pump truck, which comprises a steel pipe, a hoop arranged on the steel pipe and used for connecting a pump pipe main body, and a switching mechanism arranged on the steel pipe and used for controlling concrete in the steel pipe to flow, the opening and closing mechanism comprises a positioning plate, a closing plate rotationally arranged on the positioning plate and used for blocking concrete in the steel pipe, and a clamping rod for locking the rotating motion of the closing plate, and the outlet opening and closing device of the concrete pump truck pump pipe further comprises a scraping mechanism for cleaning away the residual concrete attached to the inner wall of the steel pipe. According to the technical scheme, the closing plate and the clamping rod are arranged to block and discharge concrete in the moving process of the pump pipe body, scattering of the concrete is effectively prevented, the rotating angle of the closing plate can be adjusted and fixed, the discharge amount of the concrete can be controlled, the closing plate does not need to be manually guarded and controlled all the time, and the working efficiency is improved. And the use fatigue is reduced in a disguised manner.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete pouring, in particular to an outlet switch device for a pump pipe of a concrete pump truck. Background Art

[0002] During the construction process of a concrete pump truck (also known as a self-propelled concrete pump), the pump pipe is a key component, and its operating status directly affects the concrete pumping efficiency and construction quality. The concrete pump truck uses the pump pipe to transport concrete from the mixer truck to the construction area to achieve direct pouring operations. In this process, the outlet switch device of the pump pipe plays a vital role.

[0003] According to the specifications and plan requirements, when pouring concrete, the frame columns need to be poured in layers first, and the beam and slab concrete can be poured only after the strength reaches 75% of the design strength. Ordinary concrete pumps need to move the pump pipe frequently when pouring column concrete, and a lot of concrete materials are spilled, which requires manual cleaning. On the one hand, it causes material waste and increases the cost of manual cleaning. Secondly, if some concrete is not cleaned thoroughly, it will affect the safety and molding quality of the top plate and beam bottom concrete structure.

[0004] Chinese patent publication number CN218326852U discloses a temporary plugging device for a concrete pump truck pump pipe. When in use, the sleeve body is fixed under the pump pipe, and the sleeve cover body is screwed onto the outer sleeve thread of the sleeve body, which can effectively prevent the residual concrete in the pump truck from dripping onto the template when pouring concrete.

[0005] However, in actual use, the above structure also rotates the cover to be set on the outer sleeve thread when blocking and closing the pump tube, which reduces the closing efficiency of the pump tube in disguise, and it is not convenient to adjust the closing and blocking of the pump tube, reducing the flexibility of the device. Utility Model Content

[0006] In view of the above problems, an outlet switch device for a pump pipe of a concrete pump truck is provided, which solves the problem of inconvenience in adjusting and fixing the closing plate through a closing plate and a clamping rod.

[0007] In order to solve the problems of the prior art, the utility model provides an outlet switch device for a pump pipe of a concrete pump truck, comprising a steel pipe, a clamp arranged on the steel pipe for connecting a pump pipe body, and a switch mechanism arranged on the steel pipe for controlling the flow of concrete in the steel pipe, the switch mechanism comprising a positioning plate and a closing plate rotatably arranged on the positioning plate for blocking the concrete in the steel pipe, and a clamping rod for locking the rotational movement of the closing plate, and the outlet switch device of the pump pipe of the concrete pump truck also includes a scraping mechanism for cleaning the residual concrete attached to the inner wall of the steel pipe.

[0008] Preferably, the switch mechanism further includes a through groove, a positioning rod, and a clamping plate; the through groove is formed in the steel pipe, and the through groove is in clearance fit with the closing plate; the positioning rod is rotatably arranged on the positioning plate and is coaxially fixed with the closing plate; the clamping plate is arranged in the steel pipe and is attached to the closing end of the closing plate.

[0009] Preferably, the switch mechanism further includes a clamping tooth; the clamping tooth is arranged on the positioning rod, and the clamping tooth is coaxially fixed with the positioning rod and is located below the positioning plate.

[0010] Preferably, the switch mechanism further includes a mounting block and a sliding rod; the mounting block is arranged on the steel pipe; the sliding rod is slidably arranged on the mounting block in the vertical direction; the sliding rod is slidably arranged on the mounting block in the vertical direction and is connected to the clamping rod.

[0011] Preferably, the switch mechanism further includes a guide rod and a return spring; the guide rod is arranged in the mounting block and is in clearance fit with the clamping rod; the return spring is arranged on the guide rod, and the two ends of the return spring are respectively fixed to the guide rod and the end of the clamping rod.

[0012] Preferably, the scraping mechanism includes a circular sleeve, an annular limiting groove, a sliding block, and a scraping plate; the circular sleeve is arranged on the steel pipe and is located below the closing plate; the annular limiting groove is formed in the circular sleeve; the sliding block is arranged on the annular limiting groove and is in notch fit with the annular limiting groove; the scraping plate is arranged on the sliding block and is attached to the inner wall of the steel pipe.

[0013] The beneficial effects of the present utility model compared with the prior art are as follows:

[0014] 1. By providing the closing plate and the clamping rod, the present utility model can block and discharge the concrete during the movement of the pump pipe main body, effectively preventing the concrete from spilling. The clamping rod can press against the closing plate to fix the closing plate, so that it is not necessary for manual labor to hold the closing plate all the time when operating the closing plate, which reduces the labor fatigue in disguise.

[0015] 2. By providing the through groove, the positioning rod, and the clamping plate, the present utility model can achieve the storage and rotational opening of the closing plate, preventing the leakage of concrete on the closing plate. Since the through groove is in contact with the upper and lower ends of the closing plate, when the closing plate is opened and closed, the through groove can scrape and clean the concrete attached to the closing plate, solving the problem of difficult cleaning of the closing plate in the later stage.

[0016] 3. By providing the clamping teeth, when the positioning rod drives the closing plate to rotate, the clamping teeth coaxially fixed with it can perform synchronous rotational movement. The setting of the clamping teeth facilitates the subsequent locking effect of the closing plate.

[0017] 4. The utility model realizes the locking and releasing effects of the closing plate by arranging the mounting block and the sliding rod. When the sliding rod slides, it can drive the clamping rod fixedly connected thereto to always contact the engaging teeth and perform fixed limit on the engaging teeth.

[0018] 5. The utility model realizes the more stable vertical sliding of the clamping rod by arranging the guide rod and the reset spring. The arrangement of the guide rod can drive the clamping rod to slide more stably in the vertical direction. The arrangement of the reset spring facilitates driving the clamping rod to always contact and engage with the engaging teeth and provides a compression space for the clamping rod to descend.

[0019] 6. The utility model realizes that the sliding block and the scraping plate can perform circular rotational movement along the steel pipe along the annular limiting groove by arranging the circular sleeve, the annular limiting groove, the sliding block and the scraping plate. During this process, the scraping plate can always fit with the inner wall of the steel pipe, thereby achieving the effect of preventing concrete from accumulating on the inner wall of the steel pipe and being difficult to clean. Description of the Drawings

[0020] Figure 1 is a three-dimensional structure diagram from the first perspective of an outlet switch device for the pump pipe of a concrete pump truck.

[0021] Figure 2 is a three-dimensional structure diagram from the second perspective of an outlet switch device for the pump pipe of a concrete pump truck.

[0022] Figure 3 is a front view structure diagram of an outlet switch device for the pump pipe of a concrete pump truck.

[0023] Figure 4 is an outlet switch device for the pump pipe of a concrete pump truck Figure 3 of the side view cutaway three-dimensional structure diagram.

[0024] Figure 5 is a three-dimensional structure diagram of the disassembled state of the steel pipe and the pump pipe main body of an outlet switch device for the pump pipe of a concrete pump truck.

[0025] Figure 6 is an outlet switch device for the pump pipe of a concrete pump truck Figure 5 of the side view cutaway three-dimensional structure diagram.

[0026] Figure 7 is a three-dimensional structure diagram of the closing plate and the scraping plate of an outlet switch device for the pump pipe of a concrete pump truck.

[0027] Figure 8 is an outlet switch device for the pump pipe of a concrete pump truck Figure 1 of the enlarged structure diagram at A in

[0028] Figure 9 is a three-dimensional structure diagram of the scraping mechanism of an outlet switch device for the pump pipe of a concrete pump truck.

[0029] Figure 10 It is an Figure 9 Enlarged structure diagram at position B in

[0030] In the figure, the reference numerals are: 1, steel pipe; 2, main body of the pump pipe; 3, clamp; 31, docking block; 32, locking nut; 33, locking threaded rod; 34, rubber sealing ring; 4, switching mechanism; 41, positioning plate; 42, closing plate; 43, clamping rod; 431, through groove; 44, positioning rod; 45, engaging plate; 46, engaging teeth; 47, mounting block; 48, sliding rod; 49, guiding rod; 491, return spring; 5, scraping mechanism; 51, circular sleeve; 52, annular limiting groove; 53, sliding block; 531, pulling handle; 54, scraping plate. Specific embodiments

[0031] In order to further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0032] See Figure 1 and Figure 8 As shown, an outlet switching device for a pump pipe of a concrete pump truck includes a steel pipe 1, a clamp 3 arranged on the steel pipe 1 for connecting the main body 2 of the pump pipe, and a switching mechanism 4 arranged on the steel pipe 1 for controlling the flow of concrete in the steel pipe 1. The switching mechanism 4 includes a positioning plate 41 and a closing plate 42 rotatably arranged on the positioning plate 41 for blocking the concrete in the steel pipe 1, and a clamping rod 43 for locking the rotational movement of the closing plate 42. The outlet switching device of the concrete pump truck pump pipe also includes a scraping mechanism 5 for cleaning the residual attached concrete on the inner wall of the steel pipe 1. There are a pair of clamps 3, and a pair of oppositely arranged docking blocks 31 are arranged on each of the pair of clamps 3. An internal thread is provided on the docking block 31 of one of the clamps 3. The pair of clamps 3 are threadedly docked through the locking threaded rod 33 and the docking block 31, and a locking nut 32 is arranged on the locking threaded rod 33. The locking nut 32 is used to lock and install the pair of clamps 3. The steel pipe 1 is preferably a seamless steel pipe 1, and a rubber sealing ring 34 is arranged at the connection between the steel pipe 1 and the main body 2 of the pump pipe.

[0033] When installing the clamp 3, the rubber sealing ring 34 can be firstly sleeved on the joint between the steel pipe 1 and the pump pipe body 2 by applying lubricating oil, and then a pair of clamps 3 can be docked and fixed, so as to achieve a quick connection and installation between the steel pipe 1 and the pump pipe body 2, and ensure the connection sealing between the steel pipe 1 and the pump pipe body 2. After the docking between the steel pipe 1 and the pump pipe body 2 is completed, the concrete flowing in the steel pipe 1 can be discharged by rotating the closing plate 42, and the rotating angle of the rotating closing plate 42 can be fixed by the clamping rod 43, so that the concrete can be blocked and discharged during the movement of the pump pipe body 2, which effectively prevents the concrete from being spilled, and the rotation angle of the closing plate 42 can be adjusted and fixed, so that the discharge amount of concrete can be controlled, and there is no need for manual supervision and control of the closing plate 42, which reduces the use fatigue in disguise.

[0034] See also Figure 3 and Figure 5 As shown, the switch mechanism 4 also includes a through slot 431, a positioning rod 44 and a snap-fit ​​plate 45; the through slot 431 is opened on the steel pipe 1, and the through slot 431 is clearance-matched with the closing plate 42; the positioning rod 44 is rotatably set on the positioning plate 41 and coaxially fixed with the closing plate 42; the snap-fit ​​plate 45 is set in the steel pipe 1 and fits with the closed end of the closing plate 42, and the snap-fit ​​plate 45 has a pair of and is respectively located at the upper and lower ends of the closing plate 42, and an avoidance groove for the closing plate 42 to pass through is reserved between the pair of snap-fit ​​plates 45.

[0035] When the steel pipe 1 and the pump pipe body 2 are connected by the clamp 3 and the concrete in the steel pipe 1 needs to be discharged, the closing plate 42 is initially between a pair of clamping plates 45. First, the closing plate 42 coaxially fixed therewith is rotated by the positioning rod 44 until the closing plate 42 rotates along the through groove 431 opened on the steel pipe 1 to slide on the outside of the steel pipe 1. In this process, when the closing plate 42 slides, the size of the through groove 431 fits the size of the upper and lower ends of the closing plate 42, so that the concrete accumulated on the closing plate 42 can be scraped off when the closing plate 42 is rotated and opened. At this time, the closing plate 42 can lose its blocking effect on the concrete in the steel pipe 1, and then the concrete can be discharged through the steel pipe 1, thereby preventing the leakage of concrete on the closing plate 42 and the difficulty in cleaning the closing plate 42 in the later stage.

[0036] See also Figure 3 and Figure 5 As shown, the switch mechanism 4 further includes a locking tooth 46 ; the locking tooth 46 is disposed on the positioning rod 44 , and the locking tooth 46 is coaxially fixed with the positioning rod 44 and is located below the positioning plate 41 .

[0037] When the positioning rod 44 drives the closing plate 42 to rotate, it can drive the engaging teeth 46 coaxially fixed therewith to perform synchronous rotational motion.

[0038] See Figure 5 and Figure 6 As shown, the switch mechanism 4 further includes a mounting block 47 and a sliding rod 48; the mounting block 47 is arranged on the steel pipe 1; the sliding rod 48 is slidably arranged on the mounting block 47 in the vertical direction; the sliding rod 48 is slidably arranged on the mounting block 47 in the vertical direction and is connected to the locking rod 43.

[0039] When it is necessary to fix the positions of the closing plate 42 and the engaging teeth 46, in the initial state of the locking rod 43, it can contact the engaging teeth 46 and perform clamping fixation on the engaging teeth 46. When the engaging teeth 46 are fixed by the locking rod 43, the closing plate 42 coaxially fixed thereto can be driven to stop rotating. When the closing plate 42 stops rotating, the opening range of the closing plate 42 can be fixed, thereby achieving the limitation and fixation of the opening range of the closing plate 42, facilitating the control of the discharge speed and discharge amount of the concrete in the steel pipe 1 by controlling the opening and closing angle of the closing plate 42, and without the need for manual holding of the positioning rod 44 all the time, which reduces the labor fatigue in disguise.

[0040] See Figure 6 and Figure 7 As shown, the switch mechanism 4 further includes a guide rod 49 and a return spring 491; the guide rod 49 is arranged in the mounting block 47 and is in clearance fit with the locking rod 43; the return spring 491 is arranged on the guide rod 49, and both ends of the return spring 491 are fixed to the guide rod 49 and the end of the locking rod 43 respectively.

[0041] When the locking rod 43 contacts the engaging teeth 46, in the initial state of the locking rod 43, it can always contact the engaging teeth 46 and fix the engaging teeth 46 under the pushing force of the return spring 491. When it is necessary to rotate the closing plate 42, first slide the sliding rod 48 in the direction away from the engaging teeth 46. During this process, the return spring 491 is compressed, and the sliding rod 48 can drive the locking rod 43 fixedly connected thereto to disengage from the outside of the engaging teeth 46. After losing the restriction on the engaging teeth 46, the rotation angle of the closing plate 42 can be controlled. When the sliding rod 48 is released, the return spring 491 is released and drives the locking rod 43 fixedly connected to its end to slide in the vertical direction along the guide rod 49 until the locking rod 43 contacts the engaging teeth 46 and restricts the engaging teeth 46. At this time, the specification of the engaging teeth 46 is completed, achieving the fixation of the opening of the closing plate 42.

[0042] See Figure 6 and Figure 7As shown in the figure, the scraping mechanism 5 includes a circular sleeve 51, an annular limiting groove 52, a sliding block 53 and a scraping plate 54; the circular sleeve 51 is arranged on the steel pipe 1 and is located below the closing plate 42; the annular limiting groove 52 is formed on the circular sleeve 51; the sliding block 53 is arranged on the annular limiting groove 52 and is in notch fit with the annular limiting groove 52; the scraping plate 54 is arranged on the sliding block 53 and is attached to the inner wall of the steel pipe 1. A pulling handle 531 for pulling the sliding block 53 is arranged on the sliding block 53, and the arrangement of the pulling handle 531 facilitates the rotation scraping operation of the scraping plate 54.

[0043] When it is necessary to scrape and clean the concrete attached to the inner wall of the steel pipe 1, first cover the pulling handle 531 with the hand, and then slide the sliding block 53 along the annular limiting groove 52 formed on the circular sleeve 51. During this process, the sliding block 53 is in notch fit with the annular limiting groove 52, so that the sliding block 53 can rotate along the annular limiting groove 52. During the rotation movement of the sliding block 53, the scraping plate 54 fixedly connected thereto can be driven to scrape the concrete attached to the inner wall of the steel pipe 1, preventing the concrete from accumulating on the inner wall of the steel pipe 1 and being difficult to clean.

[0044] The above embodiments only represent one or several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An outlet switch device for a pump pipe of a concrete pump truck, comprising a steel pipe (1), a clamp (3) arranged on the steel pipe (1) for connecting a pump pipe body (2), and a switch mechanism (4) arranged on the steel pipe (1) for controlling the flow of concrete in the steel pipe (1); characterized in that: The switch mechanism (4) comprises a positioning plate (41), a closing plate (42) rotatably arranged on the positioning plate (41) for blocking concrete in the steel pipe (1), and a clamping rod (43) for locking the rotational movement of the closing plate (42). The outlet switch device of the concrete pump truck pump pipe also comprises a scraping mechanism (5) for cleaning concrete remaining attached to the inner wall of the steel pipe (1).

2. The outlet switch device for a concrete pump truck pump pipe according to claim 1, characterized in that: The switch mechanism (4) further comprises a through slot (431), a positioning rod (44) and a snap plate (45); the through slot (431) is provided on the steel pipe (1), and the through slot (431) is clearance-matched with the closing plate (42); the positioning rod (44) is rotatably arranged on the positioning plate (41) and is coaxially fixed with the closing plate (42); the snap plate (45) is arranged in the steel pipe (1) and is in contact with the closed end of the closing plate (42).

3. The outlet switch device for a concrete pump truck pump pipe according to claim 1, characterized in that: The switch mechanism (4) further comprises a locking tooth (46); the locking tooth (46) is arranged on the positioning rod (44); the locking tooth (46) is coaxially fixed with the positioning rod (44) and is located below the positioning plate (41).

4. The outlet switch device for a concrete pump truck pump pipe according to claim 1, characterized in that: The switch mechanism (4) further comprises a mounting block (47) and a sliding rod (48); the mounting block (47) is arranged on the steel pipe (1); the sliding rod (48) is arranged on the mounting block (47) in a vertical sliding direction; the sliding rod (48) is arranged on the mounting block (47) in a vertical sliding direction and is connected to the clamping rod (43).

5. The outlet switch device for a concrete pump truck pump pipe according to claim 1, characterized in that: The switch mechanism (4) further comprises a guide rod (49) and a return spring (491); the guide rod (49) is arranged in the mounting block (47) and is clearance-matched with the clamping rod (43); the return spring (491) is arranged on the guide rod (49), and two ends of the return spring (491) are respectively fixed to the ends of the guide rod (49) and the clamping rod (43).

6. The outlet switch device for a concrete pump truck pump pipe according to claim 1, characterized in that: The scraping mechanism (5) comprises a circular sleeve (51), an annular limiting groove (52), a sliding block (53) and a scraper (54); the circular sleeve (51) is arranged on the steel pipe (1) and is located below the closing plate (42); the annular limiting groove (52) is formed on the circular sleeve (51); the sliding block (53) is arranged on the annular limiting groove (52) and is matched with the notch between the annular limiting grooves (52); and the scraper (54) is arranged on the sliding block (53) and is in contact with the inner wall of the steel pipe (1).

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