Building civil engineering trolley

Abstract

The invention discloses a building civil engineering trolley, which relates to the technical field of building equipment, and is characterized in that a push handle is arranged at the top of the rear end of a box body, and rolling rollers are respectively arranged on two sides of the bottom end of the middle part of the box body; supporting legs are arranged on the two sides of the bottom of the rear end of the box body respectively. A slidable first scraping plate is arranged in the box body, an elastic driving device is arranged at the rear end of the box body, and the elastic driving device drives the first scraping plate to move through a first moving device; mounting frames are arranged on the two sides of the top of the front end of the box body respectively, and a baffle capable of being opened and closed is arranged between the two mounting frames. The elastic driving device drives the baffle to open and close through the opening and closing device. The handle only needs to be pressed once during discharging, time and labor are saved, safety is achieved, some cement or concrete adsorbed to the inner wall of the trolley body can be cleaned while discharging is conducted, manual cleaning is not needed, and a user can use the trolley conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of construction equipment, and in particular to a construction and civil engineering wheelbarrow. Background Art

[0002] At present, due to the complex construction environment, some large-scale transportation machinery cannot be conveniently used during construction. In this case, the transportation of some construction materials such as concrete requires the use of small and convenient carts. We can see that carts are indispensable transportation tools at the construction site, which brings great convenience to the construction. Through observation, it is found that when transporting construction materials to the destination for unloading, construction workers generally use two methods: one is to unload the goods in the cart in multiple times, and the other is to push the cart hard to use inertia to overturn the cart and unload the goods. The second method is somewhat dangerous; although the first method is very safe, it is time-consuming and labor-intensive. Therefore, a cart that is easy to overturn and can unload quickly is extremely necessary.

[0003] Moreover, when the construction wheelbarrow has completed transporting cement or concrete, some cement or concrete will be adsorbed on the inner wall of the wheelbarrow body, which requires the user to clean it manually, and the user also needs to reach in to clean it, which is inconvenient for the user to clean and wastes the user's time. Summary of the invention

[0004] In view of the above problems, the present invention provides a construction and civil engineering wheelbarrow, which solves the problem that the existing construction and civil engineering wheelbarrow is inconvenient to use.

[0005] The technical solution adopted by the present invention is: a construction and civil engineering wheelbarrow, comprising a box body, rollers and a push handle; a push handle is provided at the top of the rear end of the box body, and rollable rollers are respectively provided on both sides of the bottom end of the middle part of the box body; It also includes a baffle, a leg, an elastic driving device, a first scraper, an opening and closing device, and a first moving device; Support legs are respectively provided on both sides of the bottom of the rear end of the box; A slidable first scraper is provided in the box body, and an elastic driving device is provided at the rear end of the box body, and the elastic driving device drives the first scraper to move through the first moving device; Mounting frames are respectively arranged on both sides of the top of the front end of the box body, and an openable and closable baffle is arranged between the two mounting frames; the elastic driving device drives the baffle to open and close through the opening and closing device.

[0006] Further, the first moving device includes a first guide frame, a first slider, a second slider, a first scissor-type movable rod and a second guide frame; a first cavity is provided at the rear end of the box body, the elastic driving device is arranged in the first cavity, and the elastic driving device partially extends out of the first cavity, the left and right side walls of the box body are each provided with a second cavity and a third cavity, and the third cavity is arranged outside the second cavity; the opening and closing device is arranged in the third cavity, the two second cavities are respectively provided with a first guide frame, the front side of the first guide frame is slidably provided with a second guide frame, the first guide frame and the second guide frame are each provided with a second slider, the lower part of the second slider is slidably provided with a first slider, the first slider and the second slider arranged in the first guide frame are hinged between the first slider and the second slider arranged in the second guide frame, and a plurality of groups of first scissor-type movable rods are hinged, the elastic driving device arranged in the first cavity is provided with a first moving plate, the outer walls on both sides of the first cavity are respectively provided with first through grooves, the two ends of the first moving plate are respectively movably penetrated through the first through grooves and connected with the two first sliders, and the two second guide frames are respectively slid through the second cavity and are respectively connected with the same first scraper.

[0007] The second movable plate is provided on the inner wall of the second cavity and the second movable plate is provided under the first movable plate, and the two ends of the second movable plate respectively slide through the second through slot and are detachably connected to the movable locking structure, and the second movable plate drives the first movable plate to move relative to the movable locking structure through the movable locking structure. The movable rod moves, and the second end of the lever is provided with a fourth through slot, and a second movable rod is movably provided in the fourth through slot, and the first end of the second movable rod movably passes through the fourth through slot and is connected to a third slider, and a third guide rail frame is provided outside the third slider, and the third guide rail frame is fixedly arranged on the inner wall of the third cavity, and the third slider is slidably arranged in the third guide rail frame, and the second end of the second movable rod movably passes through the fourth through slot and is rotatably connected to the first end of the pushing rod, and the second ends of the two pushing rods movably pass through the front wall of the third cavity and are hinged to the second end of the same baffle, and the first end of the baffle is hinged between the two mounting frames, and a second scraper is provided on the baffle, and the second scraper is slidably connected to the baffle, and a second movable device for driving the second scraper to slide is provided between the baffle and the mounting frame.

[0008] Furthermore, the elastic driving device and the movable locking structure both include a force-applying rod, a fixed tube, a guide rail, a locking member, a first elastic member and a transmission rod; a fixed tube is provided in the first cavity and the third cavity, a push plate is slidably provided in the fixed tube, a transmission rod is connected to the push plate, the transmission rod arranged in the first cavity slides through the upper end of the fixed tube and is respectively connected to the first movable plate and the second movable plate, a fixed ring is provided above the push plate, the fixed ring is connected to the inner wall of the fixed tube, a first elastic member is provided between the fixed ring and the push plate, the first elastic member is sleeved on the transmission rod, a locking member is movably provided under the push plate, the locking member is movably arranged in the fixed tube, a matching force-applying rod is provided under the locking member, and the force-applying rod The locking member and the force-applying rod member are movably arranged in the fixed tube, and matching guide rail members are arranged on the outer surfaces of the locking member and the force-applying rod member. The guide rail member is fixedly arranged in the fixed tube, and the lower end of the force-applying rod member extends out of a part of the lower end of the fixed tube. The force-applying rod member controls the movement of the locking member through the cooperation of the guide rail member and the locking member. The part of the force-applying rod member arranged in the first cavity extending out of the lower end of the fixed tube extends out of the lower end of the first cavity, and the parts of the force-applying rod member arranged in the two third cavities extending out of the lower end of the fixed tube are respectively detachably connected to the two ends of the second movable plate, the transmission rod arranged in the third cavity slides through the upper end of the fixed tube and is connected to the first movable rod, and the transmission rod arranged in the first cavity slides through the upper end of the fixed tube and an amplification steering mechanism is provided between the first movable plate.

[0009] Furthermore, the amplifying steering mechanism includes a fixed rod and a second scissor-type movable rod. The amplifying steering mechanism includes a fixed rod and a second scissor-type movable rod. The transmission rod arranged in the first cavity slides through the upper end of the fixed tube and is hinged with the first end of the first short rod and the first end of the second short rod respectively. The middle part of the first movable plate is hinged with the first end of the third short rod and the first end of the fourth short rod respectively. The second end of the first short rod, the second end of the second short rod, the second end of the third short rod and the second end of the fourth short rod are hinged with several groups of second scissor-type movable rods. The middle part of several groups of the second scissor-type movable rods rotates and penetrates the fixed rod, and the two ends of the fixed rod are connected to the inner wall of the first cavity.

[0010] Furthermore, the second moving device includes a first gear, a second gear, a rotating shaft, a first rotating rod, a second rotating rod and a second fixed shaft; a second fixed shaft is provided between the two mounting frames, the first end of the baffle is rotatably sleeved on the second fixed shaft, the two ends of the second fixed shaft are respectively sleeved with a second gear, the first gear is meshed under the second gear, a rotating shaft is provided between the two first gears, the rotating shaft is rotatably arranged on the baffle, the rotating shaft is arranged below the second fixed shaft, and gaps are left between the two ends of the rotating shaft and the two mounting frames, two first rotating rods are respectively sleeved on the rotating shaft between the two first gears, the other end of the first rotating rod is hingedly connected to the second rotating rod, and the other ends of the two second rotating rods are respectively hinged to the same second scraper, the baffle is respectively provided with two T-shaped slide grooves that penetrate the bottom end, the second scraper is provided with a T-shaped protrusion that matches the T-shaped slide groove, and the two T-shaped protrusions are respectively slidably arranged in the two T-shaped slide grooves.

[0011] Furthermore, the diameter of the first gear is smaller than the diameter of the second gear.

[0012] Furthermore, fourth cavities are respectively provided at both ends of the second movable plate to cooperate with the parts of the force rods arranged in the two third cavities that extend out of the lower end of the fixed tube, and the top wall and bottom wall of the fourth cavity are respectively provided with through holes. A number of evenly distributed blocking rods are movably provided in the fourth cavity, and the blocking rods are arranged parallel to the second movable plate. A third elastic member is provided between the first end of the blocking rod and the inner wall of the fourth cavity, and the parts of the force rods arranged in the two third cavities that extend out of the lower end of the fixed tube are respectively detachably connected to the through holes, and the second ends of the number of blocking rods are detachably connected to the parts of the force rods arranged in the two third cavities that extend out of the lower end of the fixed tube, and the parts of the force rods arranged in the two third cavities that extend out of the lower end of the fixed tube are hemispherical structures.

[0013] Furthermore, a first protrusion is provided in the middle part of the side where the two second guide rail frames are close to each other, a fifth through groove matching the first protrusion is provided in the middle part of the side where the two second cavities are close to each other, the first protrusion slides through the fifth through groove and is connected to the middle part of the same first scraper, a sixth through groove is provided on the top of the second cavity, a second protrusion is provided on the top of the second guide rail frame which slides through the sixth through groove, and the two second protrusions are connected to the top of the first scraper.

[0014] Furthermore, a first telescopic baffle is provided on both sides of the first protrusion, and the other ends of the two first telescopic baffles are respectively connected to the front and rear inner walls of the fifth through slot, and the first telescopic baffle is slidably set in the fifth through slot, and a second telescopic baffle is provided on both sides of the top of the second guide rail frame, and the other ends of the two second telescopic baffles are respectively connected to the front and rear inner walls of the sixth through slot, and the second telescopic baffle is slidably set in the sixth through slot.

[0015] Furthermore, the support leg includes a fixed leg, a fixed cylinder, a lever and a second elastic member; fixed cylinders are respectively provided on both sides of the bottom of the rear end of the box body, a fixed leg is slidably provided in the fixed cylinder, a second elastic member is provided between the first end of the fixed leg and the top wall of the fixed cylinder, the second end of the fixed leg slides through the bottom end of the fixed cylinder, an L-shaped slide groove is provided on the fixed cylinder, a lever is vertically provided on the side wall of the first end of the fixed leg, the lever slides through the L-shaped slide groove, and the lever is detachably arranged in the horizontal groove and vertical groove of the L-shaped slide groove.

[0016] Advantages of the present invention: The present invention provides a construction and civil engineering wheelbarrow, which is pushed and moved by a push handle, and a box body is supported by legs so that the box body can keep balance at a required position; by pressing the handle once, the baffle is closed and the first scraper moves backward to return to the initial position and is locked, and the second scraper moves upward on the baffle to return to the initial position while the baffle is closed; by pressing the handle again, the baffle is opened and concrete in the box body is unloaded, and the first scraper moves forward to scrape the concrete on the inner wall of the box body while unloading, and in addition, the second scraper scrapes the concrete on the inner wall of the baffle while opening the baffle; the present invention only needs to press the handle once to unload, which is time-saving, labor-saving and safe, and some cement or concrete adsorbed on the inner wall of the wheelbarrow body can be cleaned while unloading, without manual cleaning, and is convenient for users to use.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the first cavity structure of the present invention; Figure 3 is a front view of the connection rod installation of the present invention; Figure 4 is a top view of the connection rod installation of the present invention; Figure 5 is a side view of the connecting rod installation of the present invention; Figure 6 is a side view of the installation of the second moving rod of the present invention; Figure 7It is a schematic diagram of the installation of the first scissor-type movable rod of the present invention; Figure 8 is a top view of the installation of the second guide rail frame of the present invention; Fig. 9 It is a schematic diagram of the structure of the elastic drive device of the present invention; Fig.10 It is a schematic diagram of the installation of the force-applying rod of the present invention; Fig.11 It is an exploded schematic diagram of the installation of the force-applying rod of the present invention; Fig.12 It is a schematic diagram of the T-shaped chute arrangement position of the present invention; Fig.13 is a schematic diagram of the installation of the first rotating rod of the present invention; Fig.14 is a schematic diagram of the installation of the second fixed shaft of the present invention; Fig.15 is a schematic diagram of the installation of the second bump of the present invention; Fig.16 is a schematic diagram of the installation of the first bump of the present invention; Fig.17 It is a schematic diagram of the structure of the amplification mechanism of the present invention; Fig.18 It is a schematic diagram of the support leg structure of the present invention; Fig.19 is a schematic diagram of the installation of the second elastic member of the present invention; Fig. 20 It is a schematic diagram of the installation of the blocking rod of the present invention.

[0020] Reference numerals: 1-box, 2-roller, 3-baffle, 4-leg, 5-elastic driving device, 6-push handle, 7-first scraper, 8-opening and closing device, 9-first moving device, 10-second scraper, 11-mounting frame; 31-first gear, 32-second gear, 33-rotating shaft, 34-first rotating rod, 35-second rotating rod, 36-second fixed shaft; 41-fixed leg, 42-fixed cylinder, 43-shift rod, 44-second elastic member, 45-L-shaped slide groove; 51-first movable plate, 52-second movable plate, 53-amplifier mechanism; 81-lever, 82-movable locking structure, 83-pushing rod, 84-third guide rail frame, 85-third sliding block, 86-connecting rod; 91-first guide rail frame, 92-first slider, 93-second slider, 94-first connecting rod, 95-second connecting rod, 96-second guide rail frame; 101 - first cavity, 102 - second cavity, 103 - third cavity; 301-T type slide; 501-force rod, 502-fixed tube, 503-guide rail, 504-locking member, 505-first elastic member, 506-transmission rod, 507-fixed ring, 508-push plate; 521 - fourth cavity, 522 - third elastic member, 523 - through hole, 524 - blocking rod; 531-fixed rod, 532-second scissor-type movable rod; 811 - third through slot, 812 - fourth through slot, 813 - first fixed shaft; 851 - second moving rod; 961-first bump, 962-second bump; 1021 - fifth through groove, 1031 - second through groove. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] refer to Figures 1 to 20 A construction and civil engineering trolley comprises a box body 1, rollers 2 and a push handle 6; a push handle 6 is fixedly installed on the top of the rear end of the box body 1, and the box body 1 is pushed and moved by the push handle 6, and rollable rollers 2 are respectively installed on both sides of the bottom end of the middle part of the box body 1; It also includes a baffle 3, a leg 4, an elastic drive device 5, a first scraper 7, an opening and closing device 8 and a first moving device 9; Support legs 4 are fixedly installed on both sides of the bottom of the rear end of the box body 1; A slidable first scraper 7 is provided in the box body 1, and the concrete on the inner wall of the box body 1 is scraped by the first scraper 7. An elastic driving device 5 is installed at the rear end of the box body 1, and the elastic driving device 5 drives the first scraper 7 to move through a first moving device 9; preferably, the first moving device 9 includes a first guide rail frame 91, a first slider 92, a second slider 93, a first scissor-type movable rod and a second guide rail frame 96; a first cavity 101 is provided at the rear end of the box body 1, and the elastic driving device 5 is arranged in the first cavity 101, and the elastic driving device 5 partially extends out of the first cavity 101, and a second cavity 102 and a third cavity 103 are provided in the left and right side walls of the box body 1, and the third cavity 103 is arranged outside the second cavity 102; the first guide rail frames 9 are fixedly installed in the two second cavities 102, respectively. 1. A second guide rail frame 96 is slidably provided at the front side of the first guide rail frame 91. A second slider 93 is fixedly installed in the first guide rail frame 91 and the second guide rail frame 96. A first slider 92 is slidably provided below the second slider 93. A plurality of groups of first scissor-type movable rods are hinged between the first slider 92 and the second slider 93 arranged in the first guide rail frame 91 and the first slider 92 and the second slider 93 arranged in the second guide rail frame 96. A first movable plate 51 is provided on the elastic driving device 5 arranged in the first cavity 101. First through grooves are respectively provided on the outer walls on both sides of the first cavity 101. Two ends of the first movable plate 51 are respectively movably penetrated through the first through grooves and are fixedly connected to the two first sliders 92. The two second guide rail frames 96 are respectively slidably penetrated through the second cavity 102 and are respectively connected to the same first scraper 7. The first scissor-type movable rod includes a first connecting rod 94 and a second connecting rod 95; the first connecting rod 94 and the second connecting rod 95 are cross-arranged in the middle and hinged at the intersection, the first and second connecting rods 94 and 95 of adjacent groups are hinged to each other at both ends, the first connecting rod 94 at the rear is hinged to the first slider 92 in the first guide rail frame 91, the first end of the second connecting rod 95 at the rear is hinged to the second slider 93 in the first guide rail frame 91, the tail end of the first connecting rod 94 at the front is hinged to the second slider 93 in the second guide rail frame 96, and the tail end of the second connecting rod 95 at the front is hinged to the first slider 92 in the second guide rail frame 96; By using the elastic drive device 5 extending out of the first cavity 101 as a drive source, when the elastic drive device 5 drives the first moving plate 51 to move upward, the first moving plate 51 drives the two first sliders 92 to move upward, so that the first slider 92 at the rear is close to the second slider 93, and the first slider 92 drives the first end of the first connecting rod 94 to move upward, and the first end of the first connecting rod 94 at the rear is close to the first end of the second connecting rod 95, so that the tail end of the second connecting rod 95 at the front is moved upward, driving the first slider 92 at the front to approach the second slider 93, thereby making the first shearing group The fork-type movable rod is extended, driving the two second guide rails 96 to move forward, and the first scraper 7 is driven forward to scrape the concrete through the two second guide rails 96. When the elastic driving device 5 drives the first movable plate 51 to move downward, the first movable plate 51 drives the two first sliders 92 to move downward, so that the first slider 92 at the rear is away from the second slider 93, thereby shortening the plurality of first scissor-type movable rods, driving the two second guide rails 96 to move backward, and the first scraper 7 is driven backward to return to the initial position through the two second guide rails 96. Mounting frames 11 are fixedly mounted on both sides of the top of the front end of the box body 1, and an openable baffle 3 is installed between the two mounting frames 11; the concrete on the inner wall of the box body 1 is poured out by opening the baffle 3, and the elastic driving device 5 drives the baffle 3 to open and close through the opening and closing device 8; the opening and closing device 8 is arranged in the third cavity 103, and preferably, the opening and closing device 8 includes a lever 81, a movable locking structure 82, a push rod 83, a third guide rail frame 84, a third slider 85 and a connecting rod 86; the two third cavities 1 03 are both rotatably connected with a lever 81 through a first fixed shaft 813, the first fixed shaft 813 is fixedly arranged in the third cavity 103, a first end of the lever 81 is provided with a third through slot 811, a first moving rod 86 is movably installed in the third through slot 811, one end of the first moving rod 86 movably passes through the third through slot 811 and is connected to a moving locking structure 82, the inner walls of the second cavity 102 and the third cavity 103 are both provided with a second through slot 1031, and the second through slot 1031 is arranged under the first guide rail frame 91 On the other hand, the elastic driving device 5 is sleeved with a second movable plate 52, which is arranged below the first movable plate 51. Both ends of the second movable plate 52 slide through the second through slot 1031 and are detachably connected to the movable locking structure 82. The second movable plate 52 drives the first movable rod 86 to move through the movable locking structure 82. The second end of the lever 81 is provided with a fourth through slot 812, and a second movable rod 851 is movably arranged in the fourth through slot 812. The first end of the second movable rod 851 movably passes through the fourth through slot 812 and is connected to a third slider 85. The outer sleeve of the third slider 85 is provided with a third guide rail frame 84, and the third guide rail frame 84 is fixedly arranged on the inner wall of the third cavity 103. The third slider 85 is slidably arranged in the third guide rail frame 84. The second end of the second movable rod 851 movably passes through the fourth through slot 812 and is rotatably connected to the first end of the push rod 83. The second ends of the two push rods 83 movably pass through the front wall of the third cavity 103 and are hinged to the second end of the same baffle 3. The first end of the baffle 3 is hinged between the two mounting frames 11. By using the elastic driving device 5 extending out of the first cavity 101 as a driving source, the elastic driving device 5 drives the second moving plate 52 to move, and the second moving plate 52 drives the moving locking structure 82 to work; when the moving locking structure 82 drives the first moving rod 86 to move downward, the first end of the lever 81 moves downward, so that the lever 81 rotates around the first fixed axis 813, thereby causing the second end of the lever 81 to move upward, and the second end of the lever 81 drives the second moving rod 851 to move upward, and the second moving rod 851 drives the third sliding block 85 and the first end of the pushing rod 83 to slide upward in the third guide rail frame 84. Since the third guide rail frame 84 is fixedly arranged on the inner wall of the third cavity 103, and the first end of the baffle 3 is hinged between the two mounting frames 11, when the first end of the pushing rod 83 moves upward, the second end of the baffle 3 is pushed to open outward; when the moving locking structure 82 drives the first moving rod 86 to move upward When the lever 81 is in the state of rotation, the first end of the lever 81 moves upward, so that the lever 81 rotates around the first fixed axis 813, thereby causing the second end of the lever 81 to move downward, and the second end of the lever 81 drives the second moving rod 851 to move downward, and the second moving rod 851 drives the third slider 85 and the first end of the push rod 83 to slide downward in the third guide rail frame 84. Since the third guide rail frame 84 is fixedly arranged on the inner wall of the third cavity 103, and the first end of the baffle 3 is hinged between the two mounting frames 11, when the first end of the push rod 83 moves downward, the second end of the baffle 3 is pushed inward to close; the third through slot 811 and the fourth through slot 812 are used to prevent the movement of the lever 81 from being interfered with. When the lever 81 rotates, the first moving rod 86 and the second moving rod 851 move in the third through slot 811 and the fourth through slot 812 respectively, so that the first moving rod 86 and the second moving rod 851 only move up and down; A second scraper 10 is provided on the baffle 3, and the second scraper 10 is slidably connected to the baffle 3. A second moving device that drives the second scraper 10 to slide is provided between the baffle 3 and the mounting frame 11; the second scraper 10 is driven to slide by the second moving device, and the concrete on the inner wall of the baffle 3 is scraped by the second scraper 10. A flexible protective cover is provided on the outer cover of the second moving device to prevent the second moving device from being disturbed by the concrete and unable to work, and the second moving device can shake off the concrete on the flexible protective cover when working; preferably, the second moving device includes a first gear 31, a second gear 32, a rotating shaft 33, a first rotating rod 34, a second rotating rod 35 and a second fixed shaft 36; a second fixed shaft is fixedly installed between the two mounting frames 11. 36, the first end of the baffle 3 is rotatably sleeved on the second fixed shaft 36, and the two ends of the second fixed shaft 36 are respectively fixedly sleeved with second gears 32, and the second gear 32 is meshed with a first gear 31, and a rotating shaft 33 is fixedly installed between the two first gears 31. The rotating shaft 33 is rotatably set on the baffle 3, and the rotating shaft 33 is set below the second fixed shaft 36, and there is a gap between the two ends of the rotating shaft 33 and the two mounting frames 11 to avoid interference between the second fixed shaft 36 and the mounting frames 11; two first rotating rods 34 are respectively fixedly sleeved on the rotating shaft 33 between the two first gears 31, and the other end of the first rotating rod 34 is hinged with a second rotating rod 35, and the other ends of the two second rotating rods 35 are respectively hinged with the same second scraper 10; When the second end of the baffle 3 is opened outward, the baffle 3 revolves around the second fixed axis 36, and the baffle 3 drives the rotating shaft 33 to revolve around the second fixed axis 36, thereby driving the first gear 31 to revolve around the second gear 32. Since the second gear 32 is fixed and the first gear 31 and the second gear 32 are meshed, the first gear 31 rotates when revolving around the second gear 32. The rotation of the first gear 31 drives the rotating shaft 33 to rotate, and the rotating shaft 33 drives the first rotating rod 34 to rotate. The rotation of the first rotating rod 34 drives the second rotating rod 35 to move, and then the second rotating rod 35 is driven by the second rotating rod 34. 5 makes the second scraper 10 scrape downward on the baffle 3 to scrape the concrete on the inner wall of the baffle 3; when the second end of the baffle 3 is closed inward, the baffle 3 revolves around the second fixed shaft 36 in the opposite direction, the baffle 3 drives the rotating shaft 33 to revolve around the second fixed shaft 36 in the opposite direction, the first gear 31 rotates in the opposite direction to drive the rotating shaft 33 to rotate in the opposite direction, the rotating shaft 33 drives the first rotating rod 34 to rotate in the opposite direction, the first rotating rod 34 rotates to drive the second rotating rod 35 to move in the opposite direction, and then the second scraper 10 moves upward on the baffle 3 to return to the initial position through the second rotating rod 35; The elastic driving device 5 and the movable locking structure 82 both include a force rod 501, a fixed tube 502, a guide rail 503, a locking member 504, a first elastic member 505 and a transmission rod 506; the first cavity 101 and the third cavity 103 are both fixedly installed with a fixed tube 502, a push plate 508 is slidably arranged in the fixed tube 502, and a transmission rod 506 is fixedly connected to the push plate 508. The transmission rod 506 arranged in the first cavity 101 slides through the upper end of the fixed tube 502 and respectively connects with the first movable The movable plate 51 and the second movable plate 52 are connected, and the first movable plate 51 and the second movable plate 52 are driven to move respectively through the transmission rod 506; a fixing ring 507 is installed above the push plate 508, and the fixing ring 507 is fixedly connected to the inner wall of the fixed tube 502. A first elastic member 505 is installed between the fixing ring 507 and the push plate 508, and the first elastic member 505 is sleeved on the transmission rod 506. A locking member 504 is movably installed under the push plate 508, and the locking member 504 is movably set in the fixed tube 502. A matching force rod 501 is installed under the locking member 504, and the force rod 501 is movably arranged in the fixed tube 502. A matching guide rail 503 is arranged on the outer sleeve of the locking member 504 and the force rod 501. The guide rail 503 is fixedly arranged in the fixed tube 502. The lower end of the force rod 504 movably extends out of a part of the lower end of the fixed tube 502. The force rod 501 controls the movement of the locking member 504 through the cooperation of the guide rail 503 and the locking member 504. Specifically, the inner wall of the guide rail 503 is provided with a There is a slide rail, and the top of the slide rail is an inclined surface; the lower end of the locking member is provided with a plurality of indexing claws, and the indexing claws include deep grooves and shallow grooves, and the two grooves are arranged alternately, and the tops of the deep grooves and shallow grooves are inclined surfaces; the upper end of the force rod is provided with a sliding claw matched with the indexing claw; the locking member and the force rod are both provided with a slideway matching the slide rail, and the slide rail slides in the slideway; the force rod rotates the locking member through the sliding of the slide rail on the slideway and the indexing claw; the part of the lower end of the force rod extending out of the lower end of the fixed tube is a pressure rod, and the pressure rod passes through the lower end of the fixed tube; The pressure rod is operated to drive the force rod, and the force rod drives the locking member to move upward along the slide rail of the guide rail member. The locking member applies force to the push plate, driving the transmission rod to extend and move upward. Due to the action of the fixing ring and the push plate, the first elastic member is compressed, and the compressed first elastic member needs to be reset, so that the locking member and the slide rail are always in contact. The first elastic member, the force rod and the guide rail member work together to make the locking member rotate, wherein the force rod is pressed to slide along its slide rail, and the locking member moves along the slide rail of the guide rail member and slides to a After a certain distance, the slide rail enters the deep groove of the indexing claw from the slideway, realizing the extension and locking of the transmission rod, and the pressure rod is pressed again to drive the force rod, so that the force rod drives the locking member to move upward along the slide rail of the guide rail member, and slides to a certain distance, the slide rail is separated from the deep groove of the indexing claw and enters the shallow groove of the indexing claw, and the force rod is released. Due to the action of the first elastic member, the slide rail slides from the inclined surface of the shallow groove into the slide groove, realizing the retraction of the transmission rod; the inclined surface slides to drive the locking member to rotate, realizing the extension and retraction of the transmission rod; The part of the force-applying rod 501 arranged in the first cavity 101 extending out of the lower end of the fixed tube 502 extends out of the lower end of the first cavity 101, and the force-applying rod 501 extending out of the first cavity 101 is used as a driving source; the parts of the force-applying rod 501 arranged in the two third cavities 103 extending out of the lower end of the fixed tube 502 are detachably connected to the two ends of the second movable plate 52 respectively, and the force-applying rods 501 arranged in the two third cavities 103 are driven to move by the two ends of the second movable plate 52 respectively, and the transmission rod 506 arranged in the third cavity 103 slides through the upper end of the fixed tube 502 and is connected to the first movable rod 86, and the first movable rod 86 is driven to move by the transmission rod 506 arranged in the third cavity 103; The transmission rod 506 arranged in the first cavity 101 slides through the upper end of the fixed tube 502 and an amplifying steering mechanism 53 is installed between the first movable plate 51. Preferably, the amplifying steering mechanism 53 includes a fixed rod 531 and a second scissor-type movable rod 532. The transmission rod 506 arranged in the first cavity 101 slides through the upper end of the fixed tube 502 and is hinged with the first end of the first short rod and the first end of the second short rod respectively. The hinge point between the first end of the first short rod and the first end of the second short rod and the transmission rod 506 arranged in the first cavity 101 slides through the upper end of the fixed tube 502 is arranged above the second movable plate 52; the first end of the third short rod and the first end of the fourth short rod are hinged in the middle of the first movable plate 51, and the second end of the first short rod, the second end of the second short rod, the second end of the third short rod and the second end of the fourth short rod are hinged with a plurality of second scissor-type movable rods 532. The middle part of the plurality of second scissor-type movable rods 532 rotates and penetrates the fixed rod 531, and the two ends of the fixed rod 531 are connected to the inner wall of the first cavity 101. The second scissor-type movable rod 532 includes a third link and a fourth link; the third link and the fourth link are cross-arranged in the middle and hinged at the intersection, the intersection of the third link and the fourth link of the middlemost group is rotatably sleeved on the fixed rod 531, and the head and tail ends of the third link and the head and tail ends of the fourth link of adjacent groups are hinged to each other, the head end of the third link at the bottom is hinged to the second end of the first short rod, the head end of the fourth link at the bottom is hinged to the second end of the second short rod, the tail end of the third link at the top is hinged to the second end of the third short rod, and the tail end of the fourth link at the top is hinged to the second end of the fourth short rod; and the first short rod, the second short rod, the second end of the third short rod and the fourth short rod are the same length, the third link and the fourth link are the same length, and the length of the second short rod is half the length of the third link.

[0024] When the transmission rod 506 moves upward, it drives the first end of the first short rod and the first end of the second short rod to move upward. Since the intersection of the third link and the fourth link of the middle group is rotatably sleeved on the fixed rod 531, the second end of the first short rod and the second end of the second short rod are separated from each other, and the angle between the intersection of the third link and the fourth link of several groups becomes larger, and the second end of the third short rod and the second end of the fourth short rod are separated from each other, thereby causing the first movable plate 51 to descend; when the transmission rod 506 moves downward, it drives the first end of the first short rod and the first end of the second short rod to move downward. Since the intersection of the third link and the fourth link of the middle group is rotatably sleeved on the fixed rod 531, the second end of the first short rod and the second end of the second short rod are close to each other, so that the angle between the intersection of the third link and the fourth link of several groups becomes smaller, and the second end of the third short rod and the second end of the fourth short rod are close to each other, thereby causing the first movable plate 51 to rise; The second movable plate 52 has fourth cavities 521 at both ends thereof, which are matched with the portions of the force-applying rods 501 arranged in the two third cavities 103 and extending out of the lower end of the fixed tube 502. The top wall and the bottom wall of the fourth cavity 521 are respectively provided with through holes 523. A plurality of evenly distributed blocking rods 524 are movably arranged in the fourth cavity 521, and the blocking rods 524 are arranged parallel to the second movable plate 52. A third elastic member 522 is arranged between the first end of the blocking rod 524 and the inner wall of the fourth cavity 521. The third elastic member 523 is provided in the fourth cavity 521. 2 two ends are respectively fixedly connected with the first end of the blocking rod 524 and the inner wall of the fourth cavity 521, the parts of the force-applying rods 501 arranged in the two third cavities 103 extending from the lower end of the fixed tube 502 are respectively detachably connected with the through holes 523, the second ends of the blocking rods 524 are detachably connected with the parts of the force-applying rods 501 arranged in the two third cavities 103 extending from the lower end of the fixed tube 502, and the parts of the force-applying rods 501 arranged in the two third cavities 103 extending from the lower end of the fixed tube 502 are hemispherical structures; When the second movable plate 52 moves upward, the second movable plate 52 drives the second ends of the plurality of blocking rods 524 to move upward, and the second ends of the plurality of blocking rods 524 contact and block the parts of the force-applying rods 501 arranged in the two third cavities 103 extending out of the lower ends of the fixed tubes 502, and apply external force to the parts of the force-applying rods 501 arranged in the two third cavities 103 extending out of the lower ends of the fixed tubes 502, and the force-applying rods drive the locking members to move upward along the guide rail members, and the locking members apply force to the push levers, driving the transmission rods to move upward, and when driving the first movable rod 86 to move upward, it slides to a certain distance, and the transmission rods are extended and locked by the cooperation of the locking members 504 and the guide rail members. At this time, the first elastic members arranged in the two third cavities 103 are kept in a compressed state; when the second movable plate 52 continues to move upward, the second movable plate 52 drives the second ends of the plurality of blocking rods 524 to move upward, and the second ends of the plurality of blocking rods 524 contact and block the parts. The portion of the force-applying rod 501 extending from the lower end of the fixed tube 502 disposed in the two third cavities 103 contacts and blocks it, so that the portion of the force-applying rod 501 extending from the lower end of the fixed tube 502 disposed in the two third cavities 103 moves upward, and the first elastic member is continuously compressed and slides to a certain distance. The compression and reset elastic force of the first elastic member is greater than the elastic force of the third elastic member 522. Since the lower end of the force-applying rod 501 extending from the fixed tube 502 disposed in the two third cavities 103 is divided into a hemispherical structure, the portion of the force-applying rod 501 extending from the lower end of the fixed tube 502 disposed in the two third cavities 103 applies force to the plurality of blocking rods 524, and the plurality of blocking rods 524 move into the fourth cavity 521. The portion of the force-applying rod 501 extending from the lower end of the fixed tube 502 disposed in the two third cavities 103 passes through the through hole 523 and slides downward, thereby retracting the transmission rod and driving the first moving rod 86 to move downward. The force-applying rod 501 extending out of the first cavity 101 is pressed, and the force-applying rod drives the locking member to move upward along the guide rail member. The locking member applies force to the push plate, driving the transmission rod to move upward, and the transmission rod 506 through the first cavity 101 drives the first end of the first short rod and the first end of the second short rod, and the second movable plate 52 to move upward at the same time, and the first end of the first short rod and the first end of the second short rod move upward, thereby causing the first movable plate 51 to descend, and the first movable plate 51 drives the first slider 92 to move downward, slide to a certain distance, and realize the transmission rod extended and locked through the cooperation of the locking member 504 and the guide rail member, then the separation The transmission rod 506 of the first cavity 101 drives the first movable plate 51 to move downward and then lock it, and the transmission rod 506 of the first cavity 101 drives the second movable plate 52 to move upward and then lock it; the first movable plate 51 descends, so that the first slider 92 at the rear is away from the second slider 93, thereby shortening the plurality of first scissor-type movable rods, driving the two second guide rail frames 96 to move backward, and driving the first scraper 7 to move backward and return to the initial position and lock it through the two second guide rail frames 96; at the same time, the second movable plate 52 drives the second ends of the plurality of blocking rods 524 to move upward, and the plurality of blocking rods 524 are driven to move upward. The second end of the blocking rod 524 contacts and blocks the portion of the force-applying rod 501 extending from the lower end of the fixed tube 502 arranged in the two third cavities 103. External force is applied to the portion of the force-applying rod 501 extending from the lower end of the fixed tube 502 arranged in the two third cavities 103. The force-applying rod drives the locking member to move upward along the guide rail member. The locking member applies force to the push lever to drive the transmission rod to move upward. When the first moving rod 86 is driven to move upward, it slides to a certain distance. Through the cooperation of the locking member 504 and the guide rail member, the transmission rod is extended and locked. At this time, the first elastic member 504 arranged in the two third cavities 103 is The first movable rod 86 moves upward, and the first end of the lever 81 moves upward, so that the lever 81 rotates around the first fixed axis 813, and then the second end of the lever 81 moves downward, and the second end of the lever 81 drives the second movable rod 851 to move downward, and the second movable rod 851 drives the third slider 85 and the first end of the push rod 83 to slide downward in the third guide rail frame 84. Since the third guide rail frame 84 is fixedly arranged on the inner wall of the third cavity 103, and the first end of the baffle 3 is hinged between the two mounting frames 11, when the first end of the push rod 83 moves downward, the second end of the baffle 3 is pushed inward to close and lock; The force-applying rod 501 extending out of the first cavity 101 is pressed again, and the force-applying rod first drives the locking member to move upward along the guide rail member, and the locking member applies force to the push plate, driving the transmission rod to move upward, and the transmission rod 506 of the first cavity 101 respectively drives the first end of the first short rod and the first end of the second short rod and the second movable plate 52 to move upward at the same time, and the second movable plate 52 drives the second ends of the plurality of blocking rods 524 to move upward, and the second ends of the plurality of blocking rods 524 contact and block the portion of the force-applying rod 501 extending out of the lower end of the fixed tube 502 arranged in the two third cavities 103, so that the portion of the force-applying rod 501 extending out of the lower end of the fixed tube 502 arranged in the two third cavities 103 moves upward, and the first elastic member is continuously compressed and slides to a certain distance, and the compression and reset elastic force of the first elastic member is greater than the elastic force of the third elastic member 522. Since the lower end of the force-applying rod 501 extending out of the fixed tube 502 arranged in the two third cavities 103 is divided into a hemispherical structure, the two third cavities are The force-applying rod 501 in the two third cavities 103 extends out of the lower end of the fixed tube 502 to apply force to the plurality of blocking rods 524, and the plurality of blocking rods 524 move into the fourth cavity 521. The force-applying rods 501 in the two third cavities 103 extend out of the lower end of the fixed tube 502 and pass through the through hole 523 to slide downward, so that the transmission rod is retracted and the first moving rod 86 is driven to move downward. Then, the transmission rod 506 in the third cavity 103 drives the first moving rod 86 to move downward, and the first end of the lever 81 moves downward. The lever 81 is moved so that the lever 81 rotates around the first fixed axis 813, thereby causing the second end of the lever 81 to move upward, and the second end of the lever 81 drives the second moving rod 851 to move upward, and the second moving rod 851 drives the third slider 85 and the first end of the push rod 83 to slide upward in the third guide rail frame 84. Since the third guide rail frame 84 is fixedly arranged on the inner wall of the third cavity 103 and the first end of the baffle 3 is hinged between the two mounting frames 11, when the first end of the push rod 83 moves upward, the second end of the baffle 3 is pushed to open outward. When the force-applying rod is released, the transmission rod is retracted due to the action of the first elastic member, and the transmission rod 506 through the first cavity 101 drives the first end of the first short rod, the first end of the second short rod, and the second moving plate 52 to move downward at the same time, and the first end of the first short rod and the first end of the second short rod move downward, thereby causing the first moving plate 51 to move upward, and the first moving plate 51 drives the first slider 92 to move upward, and the first moving plate 51 drives the two first sliders 92 to move upward, so that the first slider 92 at the rear is close to the second slider 93, thereby causing the first scissor-type movable The movable rod is extended, driving the two second guide rails 96 to move forward, and the first scraper 7 is driven forward to scrape the concrete through the two second guide rails 96. At the same time, in this process, the downward movement of the second movable plate 52 drives the second ends of the plurality of blocking rods 524 to move downward, and the elastic force of the first elastic member of the first cavity 101 is greater than the elastic force of the third elastic member 522. The second ends of the plurality of blocking rods 524 slide downward on the portion of the force-applying rod 501 extending from the lower end of the fixed tube 502 arranged in the two third cavities 103, and continue to slide downward, so as to realize The second ends of the blocking rods 524 are separated from the portion of the force-applying rods 501 disposed in the two third cavities 103 extending out of the lower end of the fixing tube 502, so as to facilitate the next operation; Preferably, the support leg 4 includes a fixed leg 41, a fixed cylinder 42, a lever 43 and a second elastic member 44; the fixed cylinder 42 is fixedly installed on both sides of the bottom of the rear end of the box body 1, and the fixed leg 41 is slidably arranged in the fixed cylinder 42. A second elastic member 44 is arranged between the first end of the fixed leg 41 and the inner top wall of the fixed cylinder 42. The second end of the fixed leg 41 slides through the bottom end of the fixed cylinder 42. An L-shaped groove 45 is arranged on the fixed cylinder 42. A lever 43 is vertically arranged on the side wall of the first end of the fixed leg 41. The lever 43 slides through the L-shaped groove 45, and the lever 43 can be detachable. It is arranged in the horizontal groove and the vertical groove of the L-shaped slide groove 45. When it is necessary to apply force to the force-applying rod 501 extending out of the first cavity 101, the lever 43 can be moved to the vertical groove of the L-shaped slide groove 45, so that the pressure on the force-applying rod 501 extending out of the first cavity 101 is not interfered and can be pressed freely; when it is not necessary to apply force to the force-applying rod 501 extending out of the first cavity 101, the lever 43 can be moved from the vertical groove of the L-shaped slide groove 45 to the horizontal groove of the L-shaped slide groove 45, so that the force-applying rod 501 extending out of the first cavity 101 is not collided or pressed.

[0025] The present invention provides a construction and civil engineering handcart. When in use, the lever 43 is pushed into the vertical groove of the L-shaped slide groove 45, and the operator presses the handle 6 downward, so that the rear part of the box body 1 deflects downward, and the force-applying rod 501 extending out of the first cavity 101 contacts the ground, and the ground applies a reaction force to the force-applying rod 501 extending out of the first cavity 101 and the fixed leg 41, and the fixed leg 41 slides into the fixed cylinder 42, and the lever 43 slides along the vertical groove of the L-shaped slide groove 45, and the force-applying rod drives the locking member to move upward along the guide rail member, and the locking member applies force to the push plate to drive the transmission rod to move upward, and due to the action of the fixed ring and the push plate, the first elastic member is compressed, and the transmission rod 506 passing through the first cavity 101 respectively drives The first end of the first short rod and the first end of the second short rod and the second moving plate 52 are moved upward at the same time, the first end of the first short rod and the first end of the second short rod are moved upward, thereby causing the first moving plate 51 to descend, and the first moving plate 51 drives the first slider 92 to move downward, slide to a certain distance, and realize the transmission rod extended and locked through the cooperation of the locking member 504 and the guide rail member, then respectively realize the transmission rod 506 through the first cavity 101 drives the first moving plate 51 to move downward and then lock, and the transmission rod 506 through the first cavity 101 drives the second moving plate 52 to move upward and then lock; the descent of the first moving plate 51 causes the first slider 92 at the rear to move away from the second slider 93, thereby causing a plurality of first scissor-type The movable rod is shortened, driving the two second guide rail frames 96 to move backward, and the first scraper 7 is driven to move backward and return to the initial position and locked through the two second guide rail frames 96; at the same time, the second movable plate 52 drives the second ends of the plurality of blocking rods 524 to move upward, and the second ends of the plurality of blocking rods 524 contact and block the portion of the force-applying rods 501 arranged in the two third cavities 103 extending out of the lower end of the fixed tube 502, and apply external force to the portion of the force-applying rods 501 arranged in the two third cavities 103 extending out of the lower end of the fixed tube 502, pressing the force-applying rods 501 extending out of the third cavity 103, and the force-applying rods drive the locking member to move upward along the guide rail member, and the locking member applies force to the push plate, driving the transmission rod to move upward, When the first moving rod 86 is driven to move upward, it slides to a certain distance, and the transmission rod is extended and locked through the cooperation of the locking member 504 and the guide rail member. The first moving rod 86 moves upward, and the first end of the lever 81 moves upward, so that the lever 81 rotates around the first fixed axis 813, and then the second end of the lever 81 moves downward, and the second end of the lever 81 drives the second moving rod 851 to move downward, and the second moving rod 851 drives the third slider 85 and the first end of the push rod 83 to slide downward in the third guide rail frame 84. Since the third guide rail frame 84 is fixedly arranged on the inner wall of the third cavity 103, and the first end of the baffle 3 is hinged between the two mounting frames 11, when the first end of the push rod 83 moves downward, the second end of the baffle 3 is pushed inward to close and lock;When the second end of the baffle 3 is closed inward, the baffle 3 revolves in the opposite direction around the second fixed axis 36, and the baffle 3 drives the rotating shaft 33 to revolve in the opposite direction around the second fixed axis 36. The first gear 31 rotates in the opposite direction to drive the rotating shaft 33 to rotate in the opposite direction, and the rotating shaft 33 drives the first rotating rod 34 to rotate in the opposite direction. The rotation of the first rotating rod 34 drives the second rotating rod 35 to move in the opposite direction, and then the second scraper 10 moves upward on the baffle 3 back to the initial position through the second rotating rod 35; the lever 43 is moved from the vertical groove of the L-shaped slide groove 45 to the horizontal groove of the L-shaped slide groove 45, so that the force-applying rod 501 extending out of the first cavity 101 is not collided or pressed, and the box body 1 is supported by the cooperation of the fixed leg 41, the fixed cylinder 42, the lever 43 and the horizontal groove of the L-shaped slide groove 45, so that the box body 1 remains balanced; After loading concrete into the box body 1 to a suitable amount, the box body 1 is pushed and moved by the push handle 6. After moving to the required position, the lever 43 is pushed from the horizontal groove of the L-shaped slide groove 45 to the vertical groove of the L-shaped slide groove 45. The operator presses the handle 6 downward again, and the rear part of the box body 1 deflects downward, and the force-applying rod 501 extending out of the first cavity 101 contacts the ground. The ground applies a reaction force to the force-applying rod 501 extending out of the first cavity 101 and the fixed leg 41, and the fixed leg 41 slides into the fixed cylinder 42. The lever 43 slides along the vertical groove of the L-shaped slide groove 45, the second elastic member 44 is compressed, and the force-applying rod first drives the locking member along The guide rail moves upward, and the locking member applies force to the push plate, driving the transmission rod to move upward, and the transmission rod 506 through the first cavity 101 drives the first end of the first short rod, the first end of the second short rod, and the second movable plate 52 to move upward at the same time, and the second movable plate 52 drives the second ends of the plurality of blocking rods 524 to move upward, and the second ends of the plurality of blocking rods 524 contact and block the parts of the force-applying rods 501 arranged in the two third cavities 103 extending from the lower end of the fixed tube 502, so that the parts of the force-applying rods 501 arranged in the two third cavities 103 extending from the lower end of the fixed tube 502 move upward, and the first elastic member is continuously compressed and slides to After a certain distance, the compression and reset elastic force of the first elastic member is greater than the elastic force of the third elastic member 522. Since the force-applying rod 501 arranged in the two third cavities 103 extends out of the lower end of the fixed tube 502 and is divided into a hemispherical structure, the force-applying rod 501 arranged in the two third cavities 103 extends out of the lower end of the fixed tube 502 to apply force to the plurality of blocking rods 524, and the plurality of blocking rods 524 move into the fourth cavity 521. The force-applying rod 501 arranged in the two third cavities 103 extends out of the lower end of the fixed tube 502 and passes through the through hole 523 to slide downward, thereby retracting the transmission rod and driving the first moving rod 86 downward. When the first end of the lever 81 moves upward, the transmission rod 506 in the third cavity 103 drives the first moving rod 86 to move downward, and the first end of the lever 81 moves downward, so that the lever 81 rotates around the first fixed axis 813, and then the second end of the lever 81 moves upward, and the second end of the lever 81 drives the second moving rod 851 to move upward, and the second moving rod 851 drives the third slider 85 and the first end of the push rod 83 to slide upward in the third guide rail frame 84. Since the third guide rail frame 84 is fixedly arranged on the inner wall of the third cavity 103 and the first end of the baffle 3 is hinged between the two mounting frames 11, when the first end of the push rod 83 moves upward, the second end of the baffle 3 is pushed to open outward; At this time, the handle 6 is released. Since the compressed first elastic member and the second elastic member 44 need to be reset, the ground applies a reaction force to the force-applying rod 501 and the fixed leg 41 extending out of the first cavity 101, so that the rear part of the box body 1 deflects upward, and the front part of the box body 1 deflects downward, and the concrete in the box body is poured out from the front part of the box body 1 with the baffle 3 opened by inertia; at the same time, when the second end of the baffle 3 is opened outward, the baffle 3 revolves around the second fixed axis 36, and the baffle 3 drives the rotating shaft 33 to revolve around the second fixed axis 36, and then drives the first gear 31 to revolve around the second gear 32. The wheel 32 is fixed, and the first gear 31 and the second gear 32 are meshed, so that the first gear 31 rotates while revolving around the second gear 32, and the rotation of the first gear 31 drives the rotating shaft 33 to rotate, and the rotating shaft 33 drives the first rotating rod 34 to rotate, and the rotation of the first rotating rod 34 drives the second rotating rod 35 to move, and then the second scraper 10 is scraped downward on the baffle 3 through the second rotating rod 35 to scrape the concrete on the inner wall of the baffle 3; and there is no external force on the force-applying rod, and due to the action of the first elastic member, the transmission rod is retracted, and the transmission rod through the first cavity 101 is 506 drives the first end of the first short rod, the first end of the second short rod, and the second moving plate 52 to move downward at the same time, and the first end of the first short rod and the first end of the second short rod move downward, thereby causing the first moving plate 51 to move upward, and the first moving plate 51 drives the first slider 92 to move upward, and the first moving plate 51 drives the two first sliders 92 to move upward, so that the first slider 92 at the rear is close to the second slider 93, thereby causing the plurality of groups of first scissor-type movable rods to extend, driving the two second guide rails 96 to move forward, and the two second guide rails 96 drive the first scraper 7 to move forward to move concrete The scraping is carried out. At the same time, during this process, the downward movement of the second movable plate 52 drives the second ends of the plurality of blocking rods 524 to move downward. The elastic force of the first elastic member of the first cavity 101 is greater than the elastic force of the third elastic member 522. The second ends of the plurality of blocking rods 524 slide downward on the portion of the force-applying rod 501 arranged in the two third cavities 103 extending out of the lower end of the fixed tube 502, and continue to slide downward, so that the second ends of the plurality of blocking rods 524 are separated from the portion of the force-applying rod 501 arranged in the two third cavities 103 extending out of the lower end of the fixed tube 502, which is convenient for the next operation.

[0026] In one embodiment of the present invention, the first elastic member, the second elastic member and the third elastic member are all springs.

[0027] In one embodiment of the present invention, two T-shaped grooves 301 penetrating the bottom end are respectively provided on the baffle plate 3, and a T-shaped protrusion cooperating with the T-shaped groove 301 is provided on the second scraper plate 10, and the two T-shaped protrusions are respectively slidably arranged in the two T-shaped grooves 301; through the cooperation between the T-shaped protrusion and the T-shaped groove 301, on the one hand, the second scraper plate 10 is prevented from being separated from the baffle plate 3, and on the other hand, when the T-shaped protrusion slides downward, the concrete in the T-shaped groove 301 will also be scraped off.

[0028] In one embodiment of the present invention, the diameter of the first gear 31 is smaller than the diameter of the second gear 32, so that when the first gear 31 rotates while revolving around the second gear 32, the rotation of the first gear 31 can drive the rotating shaft 33 to rotate at a larger angle, thereby achieving comprehensive scraping of the concrete on the inner wall of the baffle 3.

[0029] In one embodiment of the present invention, the first scraper 7 is an L-shaped structure. When the first scraper 7 moves forward, the first scraper 7 will move backward before moving forward. A movable gap is left between the vertical plate of the first scraper 7 of the L-shaped structure and the rear wall of the box body 1. In order to prevent concrete from entering the gap between the first scraper 7 and the rear wall of the box body 1, the horizontal plate of the first scraper 7 of the L-shaped structure is erected on the top of the rear wall of the box body 1, and the vertical plate of the first scraper 7 of the L-shaped structure slides backward in the gap and then moves forward, and the horizontal plate of the first scraper 7 of the L-shaped structure slides backward at the top of the rear wall of the box body 1 and then moves forward.

[0030] In one embodiment of the present invention, a first protrusion 961 is fixed to the middle of the side where the two second guide rails 96 are close to each other, a fifth through slot 1021 matching the first protrusion 961 is provided to the middle of the side where the two second cavities 102 are close to each other, the first protrusion 961 slides through the fifth through slot 1021 and is fixedly connected to the middle of the same first scraper 7, a sixth through slot is provided at the top of the second cavity 102, a second protrusion 962 is fixedly installed at the top of the second guide rail 96 sliding through the sixth through slot, and the two second protrusions 962 are fixedly connected to the top of the first scraper 7; the two second guide rails 96 drive the first scraper 7 through the first protrusion 961 and the second protrusion 962 respectively. Movement; first telescopic shields are provided on both sides of the first protrusion 961, and the other ends of the two first telescopic shields are respectively fixedly connected to the front and rear inner walls of the fifth through slot 1021, and the first telescopic shields are slidably set in the fifth through slot 1021, and second telescopic shields are provided on both sides of the top of the second guide rail frame 96, and the other ends of the two second telescopic shields are respectively fixedly connected to the front and rear inner walls of the sixth through slot, and the second telescopic shields are slidably set in the sixth through slot, and the outer walls on both sides of the first telescopic shield are slidably connected to the inner wall of the fifth through slot 1021, and the outer walls on both sides of the second telescopic shield are respectively slidably connected to the inner wall of the sixth through slot, so as to prevent debris from entering the second cavity 102 through the fifth through slot 1021 and the sixth through slot.

[0031] The present invention provides a construction and civil engineering wheelbarrow, which is pushed and moved by a push handle 6, and a box body 1 is supported by a support leg 4, so that the box body 1 maintains balance at a required position; by pressing the handle 6 once, the baffle is closed and the first scraper 7 moves backward to return to the initial position and is locked, and the second scraper 10 moves upward on the baffle 3 to return to the initial position while the baffle is closed; by pressing the handle 6 again, the baffle is opened and the concrete in the box is unloaded, and the first scraper 7 moves forward to scrape the concrete on the inner wall of the box while unloading, and in addition, the second scraper 10 scrapes the concrete on the inner wall of the baffle 3 while the baffle is opened; the present invention only needs to press the handle 6 once to unload, which is time-saving, labor-saving and safe, and some cement or concrete adsorbed on the inner wall of the wheelbarrow body can be cleaned while unloading, without manual cleaning, which is convenient for users to use.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A construction and civil engineering wheelbarrow, comprising a box body (1), rollers (2) and a push handle (6); the push handle (6) is provided at the top of the rear end of the box body (1), and rollable rollers (2) are provided on both sides of the bottom of the middle part of the box body (1); It is characterized in that It also includes a baffle (3), a support leg (4), an elastic driving device (5), a first scraper (7), an opening and closing device (8) and a first moving device (9); Support legs (4) are respectively provided on both sides of the bottom of the rear end of the box body (1); A slidable first scraper (7) is provided in the box body (1), and an elastic driving device (5) is provided at the rear end of the box body (1), wherein the elastic driving device (5) drives the first scraper (7) to move via a first moving device (9); Mounting frames (11) are respectively provided on both sides of the top of the front end of the box body (1), and an openable and closable baffle (3) is provided between the two mounting frames (11); the elastic driving device (5) drives the baffle (3) to open and close via the opening and closing device (8).

2. The construction and civil engineering wheelbarrow according to claim 1, characterized in that: The first moving device (9) comprises a first guide rail frame (91), a first slider (92), a second slider (93), a first scissor-type movable rod and a second guide rail frame (96); a first cavity (101) is provided at the rear end of the box body (1); the elastic drive device (5) is arranged in the first cavity (101), and a portion of the elastic drive device (5) extends out of the first cavity (101); a second cavity (102) and a third cavity (103) are provided in the left and right side walls of the box body (1); the third cavity (103) is provided outside the second cavity (102); the opening and closing device (8) is provided in the third cavity (103); a first guide rail frame (91) is provided in each of the two second cavities (102); a second guide rail frame (96) is slidably provided on the front side of the first guide rail frame (91); the first guide rail frame A second slider (93) is provided in each of the first guide rail frame (91) and the second guide rail frame (96); a first slider (92) is slidably provided below the second slider (93); a plurality of groups of first scissor-type movable rods are hingedly connected between the first slider (92) and the second slider (93) provided in the first guide rail frame (91) and the first slider (92) and the second slider (93) provided in the second guide rail frame (96); a first movable plate (51) is provided on the elastic driving device (5) provided in the first cavity (101); first through grooves are respectively provided on the outer walls of both sides of the first cavity (101); two ends of the first movable plate (51) are respectively movably penetrated through the first through grooves to be connected to the two first sliders (92); and the two second guide rail frames (96) are respectively slidably penetrated through the second cavity (102) and are respectively connected to the same first scraper (7).

3. The construction and civil engineering wheelbarrow according to claim 2, characterized in that: The opening and closing device (8) comprises a lever (81), a movable locking structure (82), a push rod (83), a third guide rail frame (84), a third slider (85) and a connecting rod (86); the two third cavities (103) are both rotatably connected with the lever (81) via a first fixed shaft (813); a first end of the lever (81) is provided with a third through slot (811); a first movable rod (86) is movably provided in the third through slot (811); one end of the first movable rod (86) movably passes through the third through slot (811) and is connected with the movable locking structure. The second cavity (102) and the third cavity (103) are provided with a second through slot (1031) on their inner walls, the second through slot (1031) being arranged below the first guide rail frame (91), the elastic drive device (5) being sleeved with a second movable plate (52), the second movable plate (52) being arranged below the first movable plate (51), the two ends of the second movable plate (52) respectively slidingly passing through the second through slot (1031) to be detachably connected to the movable locking structure (82), the second movable plate (52) being locked by the movable locking structure (82) ) drives the first moving rod (86) to move, the second end of the lever (81) is provided with a fourth through slot (812), a second moving rod (851) is movably provided in the fourth through slot (812), the first end of the second moving rod (851) movably passes through the fourth through slot (812) and is connected to a third sliding block (85), the outer sleeve of the third sliding block (85) is provided with a third guide rail frame (84), the third guide rail frame (84) is fixedly arranged on the inner wall of the third cavity (103), the third sliding block (85) is slidably arranged in the third guide rail frame (84), the second The second end of the moving rod (851) movably passes through the fourth through slot (812) and is rotatably connected to the first end of the pushing rod (83). The second ends of the two pushing rods (83) movably pass through the front wall of the third cavity (103) and are hinged to the second end of the same baffle (3). The first end of the baffle (3) is hinged between the two mounting frames (11). A second scraper (10) is provided on the baffle (3). The second scraper (10) is slidably connected to the baffle (3). A second moving device for driving the second scraper (10) to slide is provided between the baffle (3) and the mounting frame (11).

4. The construction and civil engineering wheelbarrow according to claim 3, characterized in that: The elastic drive device (5) and the movable locking structure (82) both comprise a force-applying rod (501), a fixed tube (502), a guide rail (503), a locking member (504), a first elastic member (505) and a transmission rod (506); the first cavity (101) and the third cavity (103) are both provided with a fixed tube (502), a push plate (508) is slidably provided in the fixed tube (502), the push plate (508) is connected to the transmission rod (506), and the transmission rod (506) arranged in the first cavity (101) slides through the fixed tube (502) and is The push plate (508) is provided with a fixing ring (507) above the push plate (508), the fixing ring (507) is connected to the inner wall of the fixing tube (502), a first elastic member (505) is provided between the fixing ring (507) and the push plate (508), the first elastic member (505) is sleeved on the transmission rod (506), a locking member (504) is movably provided under the push plate (508), the locking member (504) is movably arranged in the fixing tube (502), and a matching force application rod (505) is provided under the locking member (504). 01), the force-applying rod (501) is movably arranged in the fixed tube (502), the locking member (504) and the force-applying rod (501) are provided with matching guide rail members (503) on their outer sleeves, the guide rail member (503) is fixedly arranged in the fixed tube (502), the lower end of the force-applying rod (504) movably extends out of a part of the lower end of the fixed tube (502), the force-applying rod (501) controls the movement of the locking member (504) through the cooperation of the guide rail member (503) and the locking member (504), and the force-applying rod (501) arranged in the first cavity (101) extends out of the fixed tube ( The lower end of the force-applying rod (501) is extended out of the lower end of the first cavity (101); the portions of the force-applying rod (501) arranged in the two third cavities (103) extending out of the lower end of the fixed tube (502) are detachably connected to the two ends of the second movable plate (52), respectively; the transmission rod (506) arranged in the third cavity (103) slides through the upper end of the fixed tube (502) and is connected to the first movable rod (86); the transmission rod (506) arranged in the first cavity (101) slides through the upper end of the fixed tube (502) and is provided with an amplifying steering mechanism (53) between it and the first movable plate (51).

5. The construction and civil engineering wheelbarrow according to claim 4, characterized in that: The amplifying steering mechanism (53) comprises a fixed rod (531) and a second scissor-type movable rod (532). The amplifying steering mechanism (53) comprises a fixed rod (531) and a second scissor-type movable rod (532). The transmission rod (506) arranged in the first cavity (101) slides through the fixed tube (502) and is hinged to the upper end thereof with a first short rod first end and a second short rod first end, respectively. The middle of the first movable plate (51) is hinged to a third short rod first end and a fourth short rod first end, respectively. The first short rod second end, the second short rod second end, the third short rod second end and the fourth short rod second end are hinged to a plurality of groups of second scissor-type movable rods (532). The middle of the plurality of groups of second scissor-type movable rods (532) is rotatably penetrated by a fixed rod (531). Both ends of the fixed rod (531) are connected to the inner wall of the first cavity (101).

6. The construction and civil engineering wheelbarrow according to claim 3, characterized in that: The second moving device comprises a first gear (31), a second gear (32), a rotating shaft (33), a first rotating rod (34), a second rotating rod (35) and a second fixed shaft (36); a second fixed shaft (36) is provided between the two mounting frames (11); a first end of the baffle (3) is rotatably sleeved on the second fixed shaft (36); second gears (32) are sleeved on both ends of the second fixed shaft (36); a first gear (31) is meshed under the second gear (32); a rotating shaft (33) is provided between the two first gears (31); the rotating shaft (33) is rotatably mounted on the baffle (3); the rotating shaft (33) is mounted on the second fixed shaft Below the fixed shaft (36), gaps are left between both ends of the rotating shaft (33) and the two mounting frames (11), two first rotating rods (34) are respectively sleeved on the rotating shaft (33) between the two first gears (31), the other end of the first rotating rod (34) is hingedly connected to a second rotating rod (35), the other ends of the two second rotating rods (35) are respectively hingedly connected to the same second scraper (10), the baffle (3) is respectively provided with two T-shaped slide grooves (301) penetrating the bottom end, the second scraper (10) is provided with a T-shaped protrusion matched with the T-shaped slide groove (301), and the two T-shaped protrusions are respectively slidably arranged in the two T-shaped slide grooves (301).

7. The construction and civil engineering wheelbarrow according to claim 6, characterized in that: The diameter of the first gear (31) is smaller than the diameter of the second gear (32).

8. The construction and civil engineering wheelbarrow according to claim 4, characterized in that: The second movable plate (52) has fourth cavities (521) at both ends thereof respectively matched with the portions of the force-applying rods (501) arranged in the two third cavities (103) extending out of the lower end of the fixed tube (502); the top wall and the bottom wall of the fourth cavity (521) are respectively provided with through holes (523); a plurality of evenly distributed blocking rods (524) are movably arranged in the fourth cavity (521); the blocking rods (524) are arranged parallel to the second movable plate (52); the first end of the blocking rod (524) is in contact with the fourth cavity (521); A third elastic member (522) is provided between the inner walls; portions of the force-applying rods (501) arranged in the two third cavities (103) extending from the lower end of the fixed tube (502) are respectively detachably connected to the through holes (523); second ends of a plurality of blocking rods (524) are detachably connected to portions of the force-applying rods (501) arranged in the two third cavities (103) extending from the lower end of the fixed tube (502); portions of the force-applying rods (501) arranged in the two third cavities (103) extending from the lower end of the fixed tube (502) are hemispherical structures.

9. The construction and civil engineering wheelbarrow according to claim 2, characterized in that: A first protrusion (961) is provided at the middle of one side where the two second guide rail frames (96) are close to each other, a fifth through slot (1021) matching with the first protrusion (961) is provided at the middle of one side where the two second cavities (102) are close to each other, the first protrusion (961) slides through the fifth through slot (1021) and is connected to the middle of the same first scraper (7), a sixth through slot is provided at the top of the second cavity (102), a second protrusion (962) is provided at the top of the second guide rail frame (96) and slides through the sixth through slot, and the two Each of the second protrusions (962) is connected to the top of the first scraper (7), first telescopic shields are provided on both sides of the first protrusion (961), the other ends of the two first telescopic shields are respectively connected to the front and rear inner walls of the fifth through slot (1021), and the first telescopic shields are slidably arranged in the fifth through slot (1021), and second telescopic shields are provided on both sides of the top of the second guide rail frame (96), the other ends of the two second telescopic shields are respectively connected to the front and rear inner walls of the sixth through slot, and the second telescopic shields are slidably arranged in the sixth through slot.

10. The construction and civil engineering wheelbarrow according to claim 4, characterized in that: The supporting leg (4) comprises a fixed leg (41), a fixed cylinder (42), a lever (43) and a second elastic member (44); the fixing cylinders (42) are respectively provided on both sides of the bottom of the rear end of the box body (1); the fixed leg (41) is slidably provided in the fixed cylinder (42); a second elastic member (44) is provided between the first end of the fixed leg (41) and the inner top wall of the fixed cylinder (42); the second end of the fixed leg (41) slides through the bottom end of the fixed cylinder (42); an L-shaped slide groove (45) is provided on the fixed cylinder (42); a lever (43) is vertically provided on the side wall of the first end of the fixed leg (41); the lever (43) slides through the L-shaped slide groove (45), and the lever (43) is detachably arranged in the horizontal groove and the vertical groove of the L-shaped slide groove (45).

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