Concrete pump truck for building construction

Abstract

The concrete pump truck for building construction comprises a hopper body, and a plurality of parallel grating strips are arranged at an opening in the top of the hopper body at intervals, so that the opening in the top of the hopper body forms grating strips and leakage holes which are alternately arranged; the plurality of top plates are arranged in the hopper body, the plurality of top plates are in one-to-one correspondence with the plurality of grating strips and the plurality of leakage holes, and the width of each top plate is smaller than the width of the corresponding grating strip and not larger than the width of the corresponding leakage hole; the first driving part drives the multiple top plates to move synchronously; the second driving part drives the multiple top plates to synchronously ascend and descend; and the sweeping plate is vertically arranged above the grating strips and slides in the length direction of the grating strips so as to push large-particle aggregates accumulated on the sweeping face out of the opening in the top of the hopper body. The concrete grid bar has the beneficial effects that concrete large-particle aggregates clamped between the adjacent grid bars can be cleaned up, and the filtering and intercepting effects of the grid bars are guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of concrete pumping equipment, and more specifically, to a concrete pump truck for building construction. Background Art

[0002] Concrete pump trucks are a type of construction equipment that is often used in construction. They use pressure to pump concrete into a pipeline, which promotes the continuous transportation of concrete along the pipeline. Concrete pump trucks are usually composed of a car chassis, a receiving hopper on the chassis, a power pump connected to the receiving hopper, and a distribution assembly connected to the power pump. When in use, the receiving hopper receives the mixed concrete, and transports it to the distribution assembly through the power pump assembly, and then sprays it to the desired position through the distribution assembly. In the process of receiving concrete, the receiving hopper of the existing concrete pump truck may contain large aggregate particles, which may exceed the pumping capacity of the power pump itself, thereby affecting the pumping effect of the power pump. Therefore, it is necessary to set multiple grille bars at the entrance of the receiving hopper to intercept large aggregate particles from entering the power pump. However, after long-term use, concrete aggregates are easily accumulated on the grille bars and some large aggregate particles are stuck between adjacent grille bars. These all need to be manually cleaned, which is time-consuming and laborious. Summary of the invention

[0003] An object of the present invention is to solve at least the above problems and provide a concrete pump truck for construction, which can remove large-particle aggregates of concrete stuck between adjacent grid bars and ensure the filtering and intercepting effect of the grid bars.

[0004] In order to achieve these purposes and other advantages according to the present invention, a concrete pump truck for construction is provided, comprising a vehicle chassis, a material receiving hopper arranged on the vehicle chassis, a power pump connected to the material receiving hopper, and a material placing assembly connected to the power pump, wherein the material receiving hopper comprises:

[0005] The bucket body has a plurality of parallel grille bars arranged at intervals at the top opening, so that the top opening of the bucket body forms grille bars and leakage holes arranged alternately;

[0006] A plurality of top plates are arranged in the bucket body, the plurality of top plates correspond to the plurality of grille bars and the plurality of leakage holes one by one, and the width of the top plates is smaller than the width of the corresponding grille bars and not larger than the width of the corresponding leakage holes;

[0007] A first driving member drives a plurality of top plates to move synchronously, and the top plates move between directly below the corresponding grid bars and directly below the corresponding leakage holes;

[0008] A second driving member drives the multiple top plates to rise and fall synchronously, so that when the top plates are located directly below the corresponding leakage holes, the second driving member drives the multiple top plates to move upward until the top surfaces of the top plates are flush with the top surfaces of the grille bars to form a cleaning surface, and the large-particle aggregate stuck in the leakage holes is pushed out of the leakage holes;

[0009] A sweeping plate is vertically arranged above the grille bars and slides along the length direction of the grille bars to push the large-grained aggregate accumulated on the sweeping surface out of the top opening of the bucket body.

[0010] Preferably, a material receiving groove is provided on the side wall of the bucket body away from the material receiving end, and the top surface of the material receiving groove is flush with the top surface of the bucket body.

[0011] Preferably, the two ends of the receiving trough perpendicular to the length direction of the grid bars are open and the bottom of the receiving trough is inclined;

[0012] The concrete pump truck for construction also includes a third driving component, which includes a screw rod rotatably arranged on one side of the bucket body and a limit rod arranged on the other side of the bucket body. The screw rod and the limit rod are parallel to the grille bars. A slider is threaded on the screw rod, and another slider is slidably arranged on the limit rod. A pair of sliders are each provided with a fixed end of a first driving telescopic rod, and the telescopic ends of a pair of first driving telescopic rods are connected to the two ends of the bottom of the sweeping plate, so that when the screw rod rotates, the sweeping plate is driven to move between the material receiving end of the bucket body and the notch of the material receiving trough.

[0013] Preferably, a horizontal square groove is provided inside the bucket body, the square groove is in the shape of a long strip perpendicular to the grille bar, the notch end of the square groove is connected to the inner wall of the bucket body, the top of the square groove is provided with a strip-shaped passage hole, a sliding box is slidably provided in the square groove, and the top of the sliding box is attached to the inner top wall of the square groove;

[0014] The second driving member includes a second driving telescopic rod, an auxiliary rod, and a connecting plate vertically arranged in the sliding box. The auxiliary rod is arranged on the telescopic end of the second driving telescopic rod and the auxiliary rod is sealed through the sliding box and the passage hole and then extends out of the square groove. The connecting plate is arranged on the extending end of the auxiliary rod, and the connecting plate is connected to the bottom of the plurality of top plates, so that when the second driving telescopic rod is extended or retracted, the plurality of top plates are driven to rise and fall synchronously.

[0015] The first driving member is a third driving telescopic rod horizontally arranged in the square groove, and the telescopic end of the third driving telescopic rod is connected to the sliding box, so that when the third driving telescopic rod is extended or retracted, the sliding box is driven to slide along the passage hole, thereby driving multiple top plates to move synchronously.

[0016] Preferably, a sealing layer is provided between the top of the sliding plate and the inner top wall of the square groove.

[0017] Preferably, the connecting plate is located in the middle of the bucket body; inclined baffles are respectively provided at both ends of the outer top wall of the square groove, and the high end of the baffle is close to the central axis of the square groove.

[0018] Preferably, the lower end of the baffle is hinged to the outer top wall of the square groove, and a spring is provided between the side wall of the baffle close to the central axis of the square groove and the top of the square groove.

[0019] The present invention has at least the following beneficial effects:

[0020] By arranging the automobile chassis, the bucket body, the power pump, the material distribution assembly, the grille bars, the leakage holes, the connecting plate, the top plate, the first driving member, and the sweeping plate, when in use, in the initial state, the top plate is located below the corresponding grille bars (it can be designed to be initially attached to the bottom of the corresponding grille bars), and then the bucket body receives the concrete flowing out from the discharge pipe of the concrete mixer truck, and the concrete is poured on the grille bars and enters the bucket body from the leakage holes. When large-particle aggregate is stuck between adjacent grille bars, the second driving member is started according to the depth of the large-particle aggregate extending into the bucket body, so that the top plate is lowered to the corresponding position. The top plate is moved to the corresponding position, and then the first driving member is started to move the top plate to the position directly below the large aggregate particles in the corresponding leakage hole. At this time, the second driving member is started again to cause the top plate to rise to be flush with the grille bars. At this time, the large aggregate particles are driven by the top plate to separate from the leakage hole (that is, the problem of large aggregate particles being stuck in the leakage hole no longer exists at this time, which is convenient for subsequent cleaning by the sweeping plate). Then the sweeping plate is slid to sweep the accumulated concrete and large aggregate particles on the grille bars and the top plate to one side of the bucket body, which effectively ensures the filtering and interception effect of the grille bars on the bucket body as a whole.

[0021] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a concrete pump truck for construction when receiving materials according to one of the technical solutions of the present invention;

[0023] Figure 2 This is a structural schematic diagram of a sweeping plate of a concrete pump truck for construction according to one technical solution of the present invention when it is inserted into a receiving tank;

[0024] Figure 3 A top view of the structure of the bucket body in the initial state according to one of the technical solutions of the present invention;

[0025] Figure 4 This is a top view of the structure of the bucket body in one of the technical solutions of the present invention when cleaning large-particle aggregates;

[0026] Figure 5 It is a front cross-sectional view of the bucket body described in one of the technical solutions of the present invention;

[0027] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0028] Figure 7 A side view of the connection structure of the top plate, the grille bars and the connection plate when the top plate according to one of the technical solutions of the present invention is located directly below the corresponding grille bars;

[0029] Figure 8 A side view of the connection structure of the top plate, the grid bars and the connection plate when the top plate according to one of the technical solutions of the present invention is located directly below the large-grained aggregate;

[0030] Fig. 9 A side view of the connection structure of the top plate, the grille bars and the connection plate when the top plate is flush with the corresponding grille bars according to one of the technical solutions of the present invention;

[0031] Fig.10 A bottom view of the connection structure of the grille bars, the connection plates and the auxiliary rods according to one of the technical solutions of the present invention;

[0032] Fig.11 It is a top cross-sectional view of the connection structure between the square groove and the bucket body according to one of the technical solutions of the present invention;

[0033] Fig.12 A top view of a square groove according to one of the technical solutions of the present invention;

[0034] Fig.13 This is a side view of the connection structure between the first driving telescopic rod and the sweeping plate according to one of the technical solutions of the present invention;

[0035] Fig.14 This is a side sectional view of a material receiving trough according to one of the technical solutions of the present invention.

[0036] Figure numerals: 1-car chassis; 2-fabricating assembly; 3-power pump; 4-bucket body; 5-driver's cab; 6-discharging pipe; 7-large-particle aggregate; 8-top plate; 9-connecting plate; 10-grating bar; 11-receiving trough; 12-square trough; 13-sliding box; 14-first driving telescopic rod; 15-second driving telescopic rod; 16-third driving telescopic rod; 17-auxiliary rod; 18-baffle; 19-spring; 20-pass hole; 21-screw; 22-limiting rod; 23-first mounting plate; 24-first L-shaped plate; 25-second mounting plate; 26-second L-shaped plate; 27-sweeping plate; 28-sliding block; 29-driving motor; 30-leakage hole. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0038] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0039] like Figure 1-14 As shown, the present invention provides a concrete pump truck for construction, comprising a vehicle chassis 1, a material receiving hopper arranged on the vehicle chassis 1, a power pump 3 connected to the material receiving hopper, and a material distribution assembly 2 connected to the power pump 3, wherein the material receiving hopper comprises:

[0040] The bucket body 4 has a plurality of parallel grille bars 10 arranged at intervals at the top opening, so that the top opening of the bucket body 4 forms alternately arranged grille bars 10 and leakage holes 30;

[0041] A plurality of top plates 8 are arranged in the bucket body 4, the plurality of top plates 8 correspond to the plurality of grille bars 10 and the plurality of leakage holes 30 one by one, and the width of the top plates 8 is smaller than the width of the corresponding grille bars 10 and not larger than the width of the corresponding leakage holes 30;

[0042] A first driving member drives a plurality of top plates 8 to move synchronously, and the top plates 8 move between directly below the corresponding grid bars 10 and directly below the corresponding leakage holes 30;

[0043] A second driving member drives the plurality of top plates 8 to rise and fall synchronously, so that when the top plates 8 are located directly below the corresponding leakage holes 30, the second driving member drives the plurality of top plates 8 to move upward until the top surface of the top plates 8 is flush with the top surface of the grid bars 10 to form a cleaning surface, and the large-particle aggregate stuck in the leakage holes 30 is pushed out of the leakage holes 30;

[0044] The sweeping plate 27 is vertically arranged above the grid bars 10 and slides along the length direction of the grid bars 10 to push the large aggregate particles accumulated on the sweeping surface out of the top opening of the bucket body 4:

[0045] In the above technical solution, the concrete pump truck includes a vehicle chassis 1, a material receiving hopper, a material distribution component 2 and a power pump 3, wherein a driver's cab 5 is provided at one end of the vehicle chassis 1, and a material receiving hopper is provided at the other end, the material distribution component 2 and the power pump 3 are arranged between the driver's cab 5 and the material receiving hopper, the power pump 3 is connected to the discharge end of the material receiving hopper, and the pump outlet end of the power pump 3 is connected to the material distribution component 2 to receive concrete and transport the concrete to a desired position. The above structure and arrangement are very mature technologies in this field and will not be described in detail here;

[0046] The receiving hopper comprises a hopper body 4, the top of the hopper body 4 is open, and the bottom is a discharge port. The top opening of the hopper body 4 is generally square, and a plurality of parallel grille bars 10 are arranged at intervals at the top opening to divide the top opening into a plurality of leakage holes 30 arranged at intervals. The leakage holes 30 are also in the shape of long strips. The plurality of grille bars 10 and the plurality of leakage holes 30 are arranged alternately. The plurality of grille bars 10 and the plurality of leakage holes 30 are the same in number and correspond one to one. In actual design, the side wall of the first grille bar 10 can be connected to the inner wall of the top opening; the length direction of the grille bar 10 is: consistent with the driving direction of the automobile chassis 1;

[0047] The bucket body 4 is provided with a plurality of top plates 8 evenly spaced, and the plurality of top plates 8 correspond to the plurality of grille bars 10 and the plurality of leakage holes 30 one by one. The plurality of top plates 8 move horizontally in the bucket body, and the direction of the horizontal movement of the plurality of top plates 8 is: moving in a direction perpendicular to the length direction of the grille bars 10; a connecting plate 9 is provided at the bottom of the plurality of top plates 8 to connect the plurality of top plates 8 into a whole, and the connecting plate 9 is vertically connected to the top plates 8, that is, the connecting plate 9 is arranged perpendicular to the length direction of the grille bars, and the first driving member and the second driving member can both be hydraulic rods or electric telescopic rods, and the telescopic end of the first driving member is connected to the connecting plate 9 to drive the plurality of top plates 8 to move horizontally synchronously, and when the top plates 8 are located at the corresponding grille bars 10 When the top plate 8 is directly below the large aggregate 7 stuck in the corresponding leakage hole 30, the telescopic end of the second driving member is extended to drive the connecting plate 9 to move upward. When the connecting plate 9 moves to contact the bottom of the grid bar 10, the top surface of the top plate 8 is flush with the top surface 8 of the grid bar, thereby forming a flat cleaning surface, and at the same time, the large aggregate 7 stuck in the leakage hole is ejected, so that the large aggregate 7 is separated from the state of being stuck in the leakage hole 30, and the large aggregate 7 is placed on the cleaning surface, which is convenient for the subsequent cleaning of the sweeping plate 27;

[0048] A sweeping plate 27 is also provided above the bucket body 4. The sweeping plate 27 is vertically erected, and its bottom end is a sweeping end. The sweeping plate 27 slides along the length direction of the grid bars 10 to sweep the concrete and large aggregate 7 accumulated on the top plate 8 and the grid bars 10 to one side of the bucket body 4, thereby ensuring the filtering and interception effect of the grid bars 10 at the top opening of the bucket body 4;

[0049] In this technical solution, during use, in the initial state, the top plate 8 is located below the corresponding grid bar 10 (can be attached to the bottom of the corresponding grid bar 10) so as to leave the leakage hole 30 for the concrete to enter the bucket body 4, and then the bucket body 4 receives the concrete flowing out from the discharge pipe 6 of the concrete mixer truck, and the concrete is poured on the grid bar 10 and enters the bucket body 4 from the leakage hole 30. When large-particle aggregate 7 is stuck between adjacent grid bars 10, the second driving member is started to lower the top plate 8 to the corresponding position, and then the first driving member is started to move the top plate 8 to the position The corresponding leakage hole 30 is just below, and the large aggregate particles 7 stuck on the leakage hole 30 is just above the top plate 8. At this time, the second driving member is started again to cause the top plate 8 to rise to be flush with the grid bar 10. At this time, the large aggregate particles 7 are driven by the top plate 8 to break away from the leakage hole 30 (that is, there is no large aggregate particles stuck in the leakage hole 30, and the large aggregate particles are pushed upward to the cleaning surface, which is convenient for subsequent cleaning by the sweeping plate 27). Then the sweeping plate 27 is slid, and the sweeping plate 27 sweeps the accumulated concrete and large aggregate particles 7 on the grid bar 10 and the top plate 8 to one side of the bucket body 4;

[0050] The beneficial effect obtained by adopting this technical solution is that by arranging the automobile chassis 1, the bucket body 4, the power pump 3, the cloth assembly 2, the grille bars 10, the leakage holes 30, the connecting plate 9, the top plate 8, the first driving member, and the sweeping plate 27, the large-particle aggregate 7 of concrete stuck between adjacent grille bars 10 can be cleaned up, thereby ensuring the filtering and intercepting effect of the grille bars 10.

[0051] In another technical solution, a material receiving trough 11 is provided on the side wall of the bucket body 4 away from the material receiving end, and the top surface of the material receiving trough 11 is flush with the top surface of the bucket body 4; specifically, the material receiving end of the bucket body 4 is the end away from the driver's cab 5, and the material receiving trough 11 is provided on the side wall of the bucket body 4 away from the material receiving end to receive the concrete and large-particle aggregate 7 swept by the sweeping plate 27 for subsequent cleaning.

[0052] In another technical solution, the two ends of the receiving trough 11 perpendicular to the length direction of the grid bars 10 are open and the bottom of the receiving trough 11 is inclined;

[0053] The concrete pump truck for construction also includes a third driving member, which includes a screw rod 21 rotatably arranged on one side of the bucket body 4 and a limit rod 22 arranged on the other side of the bucket body 4, the screw rod 21 and the limit rod 22 are parallel to the grid bar 10, a slider 28 is screwed on the screw rod 21, and another slider 28 is slidably arranged on the limit rod 22, and a pair of sliders 28 are each provided with a fixed end of a first driving telescopic rod 14, and a pair of telescopic ends of the first driving telescopic rod 14 are connected to the two ends of the bottom of the sweeping plate 27, so that when the screw rod 21 rotates, the sweeping plate 27 is driven to move between the material receiving end of the bucket body 4 and the notch of the material receiving trough 11;

[0054] In the above technical solution, both ends of the material receiving trough 11 are open and the bottom of the trough is inclined so that the concrete and large aggregate 7 swept to the bottom of the material receiving trough 11 roll down along the inclined bottom of the trough to the lower open end and flow out from the lower open end of the material receiving trough 11. In actual use, a collecting device can be set at the lower open end of the material receiving trough 11 to collect concrete and large aggregate 7; the third driving member includes a screw rod 21 and a limiting rod 22, and the screw rod 21 and the limiting rod 22 are respectively arranged on both sides of the bucket body 4 along the length direction of the vertical grid bar 10, and a limiting rod 22 is arranged on the side wall of the material receiving trough 11 near the screw rod 21. There is a first mounting plate 23, and a first L-shaped plate 24 is provided on the side wall of the bucket body 4 near the screw 21. The first L-shaped plate 24 includes a first plate and a second plate connected vertically. The free end of the first plate is connected to the side wall of the bucket body 4, and the second plate is parallel to the first mounting plate 23. A driving motor 29 is installed on the second plate. One end of the screw 21 is coaxially connected to the output shaft of the driving motor 29, and the other end is rotatably installed on the first mounting plate 23; a second mounting plate 25 is provided on the side wall of the receiving trough 11 near the limiting rod 22. A second L-shaped plate 26 is provided on the side wall of the bucket body 4, and the second L-shaped plate 26 includes a third plate and a fourth plate connected vertically, the free end of the third plate is connected to the side wall of the bucket body 4, and the fourth plate is parallel to the second mounting plate 25, and the two ends of the limit rod 22 are respectively connected to the second mounting plate 25 and the fourth plate, a slider 28 is screwed on the screw rod 21, and another slider 28 is slidably provided on the limit rod 22, and the tops of the pair of sliders 28 are connected to the fixed end of the first drive telescopic rod 14, and the telescopic ends of the pair of first drive telescopic rods 14 are connected to the The sweeping plate 27, the first driving telescopic rod 14 can be a hydraulic rod or an electric telescopic rod to drive the sweeping plate 27 to rise and fall, thereby adjusting the height of the sweeping plate 27; wherein, when the driving motor 29 is started, it drives the screw 21 to rotate, thereby driving the slider 28 on the screw 21 to move, and finally drives the sweeping plate 27 to move along the grid bars 10, thereby sweeping the accumulated concrete and large-particle aggregate 7 on the grid bars 10 and the top plate 8 to the material receiving trough 11, and the moving range of the sweeping plate 27 is: moving between the side of the bucket body 4 away from the driver's cab 5 and the notch of the material receiving trough 11;

[0055] In this technical solution, when in use, in the initial state, the sweeping plate 27 is located on one side or one end of the bucket body 4 close to the driver's cab 5, and the outlet pipe 6 of the mixer truck is located above the receiving end of the bucket body 4 (such as Figure 1As shown in the figure, pour concrete into the bucket 4. When the concrete on the grid bars 10 needs to be cleaned or large aggregate 7 is stuck between the grid bars 10, start the first drive telescopic rod 14 to extend its telescopic end until the sweeping plate 27 is located above the concrete on the grid plate, and then start the drive motor 29 to drive the sweeping plate 27 to move to the end of the concrete on the grid bars 10 away from the receiving trough 11 (that is, close to the outlet pipe 6 of the mixer truck). At this time, start the first drive telescopic rod 14 to lower the sweeping plate 27 to The first driving telescopic rod 14 is started again to make the sweeping plate 27 move toward the receiving trough 11, and then the sweeping plate 27 is driven to move to the receiving trough 11, and the top plate 8 is driven to move to the receiving trough 11, and the first driving telescopic rod 14 is started again to make the sweeping plate 27 descend to a top lower than the top of the receiving trough 11, so as to reduce the vertical space occupied by the sweeping plate 27 and to protect the sweeping plate 27;

[0056] By adopting this technical solution, the beneficial effect obtained is that, by designing the screw 21, the limit rod 22, the slider 28, and the first drive telescopic rod 14, it is convenient to adaptively adjust the height of the sweeping plate 27 according to actual conditions. On the one hand, when it is necessary to clean the concrete and large-particle aggregate 7 on the grid bars 10, the sweeping plate 27 is adjusted to be close to the pipe mouth of the mixer truck discharge pipe 6 and then the sweeping plate 27 is lowered to be close to the grid bars 10, so that the concrete on the grid bars 10 can be cleaned, avoiding the need to move the mixer truck discharge pipe 6 outside the bucket body 4 to clean the grid bars 10. On the other hand, when cleaning is completed, the sweeping plate 27 can be moved to the material receiving port, and the top of the sweeping plate 27 can be lowered below the top of the material receiving trough 11 (similar to the sweeping plate 27 being inserted on the material receiving trough 11), which can not only reduce the space vertically occupied by the sweeping plate 27, but also further protect the sweeping plate 27.

[0057] In another technical solution, a horizontal square groove 12 is provided inside the bucket body 4, and the square groove 12 is in the shape of a long strip perpendicular to the grille bar 10. The notch end of the square groove 12 is connected to the inner wall of the bucket body 4, and a strip-shaped passage hole 20 is provided on the top of the square groove 12. A sliding box 13 is slidably provided inside the square groove 12, and the top of the sliding box 13 is attached to the inner top wall of the square groove 12.

[0058] The second driving member includes a second driving telescopic rod 15, an auxiliary rod 17, and a connecting plate 9 vertically arranged in the sliding box. The auxiliary rod 17 is arranged on the telescopic end of the second driving telescopic rod 15 and the auxiliary rod 17 seals through the sliding box 13 and the passage hole 20 and then extends out of the square groove 12. The connecting plate 9 is arranged on the extended end of the auxiliary rod 17. The connecting plate 9 is connected to the bottom of the plurality of top plates 8 so that when the second driving telescopic rod 15 is extended or retracted, the plurality of top plates 8 are driven to rise and fall synchronously.

[0059] The first driving member is a third driving telescopic rod 16 horizontally arranged in the square groove 12, and the telescopic end of the third driving telescopic rod 16 is connected to the sliding box 13, so that when the third driving telescopic rod 16 is extended and retracted, the sliding box 13 is driven to slide along the passage hole 20, thereby driving the multiple top plates 8 to move synchronously;

[0060] In the above technical solution, a square groove 12 is provided inside the bucket body 4, and the notch of the square groove 12 is connected to the inner wall of the bucket body 4 so that the square groove 12 is suspended near the top of the bucket body 4. A sliding box 13 is slidably provided inside the square groove 12, and the bottom of the sliding box 13 is slidably connected to the inner wall of the square groove 12, and the top surface of the sliding box 13 is in contact with the inner top wall of the square groove 12. A second driving telescopic rod 15 is provided inside the sliding box 13, and the second driving telescopic rod 15 is vertically arranged. The fixed end of the second driving telescopic rod 15 is connected to the inner bottom wall of the sliding box 13, and the telescopic end of the second driving telescopic rod 15 is connected to an auxiliary rod 17, and the auxiliary rod 17 is sealed and slidably extended out of the sliding box 13 (a perforation is provided on the top of the sliding box 13, and a sealing layer is applied to the inner wall of the perforation, and the top end of the auxiliary rod 17 passes through the sealing layer and then extends out of the sliding box 13), a strip-shaped passage hole 20 is provided on the top of the square groove 12, and the passage hole 20 is arranged along the direction perpendicular to the length direction of the grille bar 10, and the auxiliary rod 17 passes through the passage hole 20 after passing through the sliding box 13 and extends out of the square groove 12, and the auxiliary rod 17 slides along the passage hole 20; the extended end of the auxiliary rod 17 is connected to the middle part of the connecting plate 9, and the connecting plate 9 is located in the middle part of the bucket body 4, and the middle part refers to the middle part along the length direction of the grille bar 10;

[0061] A third driving telescopic rod 16 is further provided in the square groove 12, and the third driving telescopic rod 16 is provided on one side of the sliding box 13, and the fixed end of the third driving telescopic rod 16 is connected to the inner wall of the square groove 12, and the telescopic end is connected to the outer wall of the sliding box 13, so that when the telescopic end of the third driving telescopic rod 16 is extended and retracted, the sliding box 13 is driven to slide, and then the top plate 8 is driven to move between the corresponding grid plate and the corresponding leakage hole 30; the second driving telescopic rod 15 and the third driving telescopic rod 16 can be hydraulic rods or electric telescopic rods, which are selected and designed according to actual conditions;

[0062] In this technical solution, during use, in the initial state, the top plate 8 is located below the corresponding grid bar 10 (can be attached to the bottom of the grid bar 10), which is convenient for concrete to enter the bucket body 4 from the leakage hole 30. When it is necessary to clean the concrete and large-grained aggregate 7 on the grid bar 10, first, according to the depth of the large-grained aggregate 7 in the leakage hole 30 corresponding to the top plate 8 stuck in the bucket body 4, the second driving telescopic rod 15 is started to adaptively lower the height of the top plate 8, and then the third driving telescopic rod 16 is started to drive the top plate 8 to move below the corresponding large-grained aggregate 7, and then the second driving telescopic rod 15 is started to drive the top plate 8 to rise and push the large-grained aggregate 7 until the top plate 8 is flush with the grid bar 10. At this time, the grid bar 10 and the top plate 8 are flush to form a flat cleaning surface, and the large-grained aggregate 7 is also out of the state of being stuck in the leakage hole 30, which is convenient for the sweeping plate 27 to easily sweep and clean;

[0063] The technical solution has the beneficial effect that, by providing the square groove 12, the sliding box 13, the through hole 20, the second driving telescopic rod 15, the auxiliary rod 17, and the third driving telescopic rod 16, a method for driving the ejector to slide horizontally and a method for driving the connecting plate 9 to move upward and downward are provided, the structure is simple, and the operation is convenient.

[0064] In another technical solution, a sealing layer is provided between the top of the sliding plate and the inner top wall of the square groove 12; specifically, the sealing layer is selected according to actual conditions, and the sealing layer can be provided on the inner top wall of the square groove 12 to prevent the concrete in the bucket body 4 from entering the interior of the square groove 12 as much as possible, thereby affecting the sliding effect of the sliding box 13.

[0065] In another technical solution, the connecting plate 9 is located in the middle of the bucket body 4; inclined baffles 18 are respectively provided at both ends of the outer top wall of the square groove 12, and the high end of the baffle 18 is close to the central axis of the square groove 12; specifically, the length direction of the baffle 18 is arranged along the central axis direction of the square groove 12, the lower end of each baffle 18 is connected to one end of the outer top wall of the square groove 12, and the high end is suspended above the square groove 12, and the high end is located on the side close to the central axis of the square groove 12, and a passage for the auxiliary rod 17 is formed between the high ends of a pair of baffles 18, so that the auxiliary rod 17 is connected to the connecting plate 9 through the passage; when in use, the baffle 18 can prevent the concrete in the bucket body 4 from splashing to the top of the square groove 12, which may cause the concrete to enter the inside of the square groove 12, and the concrete can be prevented from entering the inside of the square groove 12 as much as possible.

[0066] In another technical solution, the lower end of the baffle 18 is hinged to the outer top wall of the square groove 12, and a spring 19 is provided between the side wall of the baffle 18 close to the central axis of the square groove 12 and the top of the square groove 12; specifically, a spring 19 is provided on the side of the baffle 18 close to the central axis of the square groove 12, one end of the spring 19 is connected to the top of the square groove 12, and the other end is connected to the side wall of the baffle 18 close to the baffle 18. When in use, the connecting plate 9 descends and contacts the baffle 18. When the connecting plate 9 continues to descend, the connecting plate 9 compresses the baffle 18 to ensure the function of the connecting plate 9 to descend; the technical solution has the beneficial effect that, by designing the baffle 18 as a baffle 18 with a rebound function, the position of the square groove 12 can be designed to be as close to the grille bar 10 as possible while ensuring the function of the connecting plate 9 to descend, so as to try to avoid the influence of concrete on the square groove 12.

[0067] The number of equipment and processing scale described here are used to simplify the description of the present invention. The application, modification and variation of the concrete pump truck for building construction of the present invention will be obvious to those skilled in the art.

[0068] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A concrete pump truck for construction, comprising a vehicle chassis, a material receiving hopper arranged on the vehicle chassis, a power pump connected to the material receiving hopper, and a material placing assembly connected to the power pump, characterized in that: The receiving hopper comprises: The bucket body has a plurality of parallel grille bars arranged at intervals at the top opening, so that the top opening of the bucket body forms grille bars and leakage holes arranged alternately; A plurality of top plates are arranged in the bucket body, the plurality of top plates correspond to the plurality of grille bars and the plurality of leakage holes one by one, and the width of the top plates is smaller than the width of the corresponding grille bars and not larger than the width of the corresponding leakage holes; A first driving member drives a plurality of top plates to move synchronously, and the top plates move between directly below the corresponding grid bars and directly below the corresponding leakage holes; A second driving member drives the multiple top plates to rise and fall synchronously, so that when the top plates are located directly below the corresponding leakage holes, the second driving member drives the multiple top plates to move upward until the top surfaces of the top plates are flush with the top surfaces of the grille bars to form a cleaning surface, and the large-particle aggregate stuck in the leakage holes is pushed out of the leakage holes; A sweeping plate is vertically arranged above the grille bars and slides along the length direction of the grille bars to push the large-grained aggregate accumulated on the sweeping surface out of the top opening of the bucket body.

2. The concrete pump truck for construction as claimed in claim 1, characterized in that: A material receiving groove is arranged on the side wall of the bucket body away from the material receiving end, and the top surface of the material receiving groove is flush with the top surface of the bucket body.

3. The concrete pump truck for construction as claimed in claim 2, characterized in that: The two ends of the receiving trough are open in the vertical direction of the length of the grid bars and the bottom of the receiving trough is inclined; The concrete pump truck for construction also includes a third driving component, which includes a screw rod rotatably arranged on one side of the bucket body and a limit rod arranged on the other side of the bucket body. The screw rod and the limit rod are parallel to the grille bars. A slider is threaded on the screw rod, and another slider is slidably arranged on the limit rod. A pair of sliders are each provided with a fixed end of a first driving telescopic rod, and the telescopic ends of a pair of first driving telescopic rods are connected to the two ends of the bottom of the sweeping plate, so that when the screw rod rotates, the sweeping plate is driven to move between the material receiving end of the bucket body and the notch of the material receiving trough.

4. The concrete pump truck for construction as claimed in claim 3, characterized in that: A horizontal square groove is provided inside the bucket body, and the square groove is in the shape of a long strip perpendicular to the grille bar. The notch end of the square groove is connected to the inner wall of the bucket body, and a strip-shaped passage hole is provided on the top of the square groove. A sliding box is slidably provided in the square groove, and the top of the sliding box is attached to the inner top wall of the square groove; The second driving member includes a second driving telescopic rod, an auxiliary rod, and a connecting plate vertically arranged in the sliding box. The auxiliary rod is arranged on the telescopic end of the second driving telescopic rod and the auxiliary rod is sealed through the sliding box and the passage hole and then extends out of the square groove. The connecting plate is arranged on the extending end of the auxiliary rod, and the connecting plate is connected to the bottom of the plurality of top plates, so that when the second driving telescopic rod is extended or retracted, the plurality of top plates are driven to rise and fall synchronously. The first driving member is a third driving telescopic rod horizontally arranged in the square groove, and the telescopic end of the third driving telescopic rod is connected to the sliding box, so that when the third driving telescopic rod is extended or retracted, the sliding box is driven to slide along the passage hole, thereby driving multiple top plates to move synchronously.

5. The concrete pump truck for construction as claimed in claim 4, characterized in that: A sealing layer is provided between the top of the sliding plate and the inner top wall of the square groove.

6. The concrete pump truck for construction as claimed in claim 5, characterized in that: The connecting plate is located in the middle of the bucket body; inclined baffles are respectively provided at both ends of the outer top wall of the square groove, and the high end of the baffle is close to the central axis of the square groove.

7. The concrete pump truck for construction as claimed in claim 6, characterized in that: The lower end of the baffle is hinged to the outer top wall of the square groove, and a spring is arranged between the side wall of the baffle close to the central axis of the square groove and the top of the square groove.

Images