Double-arm type material distribution device and concrete pump truck

Abstract

The utility model discloses a double-arm type material distributing device, and belongs to the technical field of concrete pump trucks. The device comprises an auxiliary frame, a pumping assembly, a lower vehicle conveying pipe and a group of material distribution units, wherein each of the two material distribution units comprises a rotary base, a rotary mechanism, a rotary table and an arm support assembly; the slewing mechanism is matched and connected with the slewing base and is dynamically coupled with the rotary table; the arm frame assembly is installed on the rotary table, and the rotary table rotates to drive the arm frame assembly to rotate to different directions. The arm frame assembly comprises arm frames and a conveying pipe, and every two adjacent arm frames are unfolded or folded through a variable-amplitude oil cylinder. A feeding port of the lower vehicle conveying pipe is connected with the pumping assembly, and the conveying pipe is arranged on one side of the arm frame and connected with a discharging port of the lower vehicle conveying pipe; the two material distribution units are symmetrical to the center of the auxiliary frame and installed on the front side and the rear side of the auxiliary frame respectively. According to the material distribution unit, the high flexibility of a related arm frame in the circumferential rotation process can be achieved through corresponding position adjustment, and the material distribution range is remarkably widened.

Description

Technical Field

[0001] The utility model relates to a double-arm type material distribution device and a concrete pump truck, and belongs to the technical field of concrete pump trucks. Background Art

[0002] With the steady development of the global economy, the application scope of concrete pump trucks is becoming wider and wider. They are widely used in urban construction, overpasses, airports and residential areas. Concrete pump trucks are machines that use pressure to continuously transport concrete along pipelines. Concrete pump trucks include a boom system composed of multiple booms, which are installed on the chassis through a slewing assembly. Cylinders are provided between each adjacent boom, so that the boom system can be unfolded or folded to transport materials to different locations. A pumping system is also provided on the chassis, and materials can enter the delivery pipe of the boom system through the pumping system.

[0003] However, the two sets of slewing mechanisms of the existing double-arm concrete pump trucks in the industry are both located in front of the vehicle. The slewing ranges of the two sets of booms are affected by each other, and the maximum rotation range of each set of boom components is less than 270 degrees, resulting in reduced flexibility of boom spreading and limited spreading range of a single boom. At the same time, due to the space limitations of a single set of slewing mechanisms, the width of the double-arm spreading device is relatively large, which is limited by the width of the road vehicle, making it difficult to arrange the corresponding double arms on the chassis, and is not suitable for conventional chassis concrete pump trucks. Utility Model Content

[0004] The utility model aims to provide a double-arm material distributing device, aiming to enable the material distributing device to achieve high material distributing efficiency, wide material distributing range and strong adaptability to working conditions.

[0005] In order to solve the above technical problems, the utility model is implemented by adopting the following technical solutions:

[0006] On the one hand, the utility model provides a double-arm material distribution device, which includes a subframe, a pumping assembly, an off-car delivery pipe, and a group of material distribution units, wherein the material distribution units include a first material distribution unit and a second material distribution unit;

[0007] Each material distribution unit includes a slewing base, a slewing mechanism, a turntable and an arm assembly;

[0008] The slewing base is arranged on the auxiliary frame, the slewing mechanism is connected with the slewing base in a matching manner, and the slewing mechanism is dynamically coupled with the turntable;

[0009] The arm assembly is installed on the turntable, and the arm assembly is driven to rotate to different positions through the rotation of the turntable;

[0010] The boom assembly includes a boom and a conveying pipe, and adjacent booms are unfolded or folded by a boom cylinder;

[0011] The feed inlet of the off-car delivery pipe is connected to the pumping assembly, and the delivery pipe is correspondingly arranged on one side of the arm support and is connected to the discharge outlet of the off-car delivery pipe;

[0012] The first fabric unit and the second fabric unit are symmetrical to the center of the sub-frame and are respectively installed on the front and rear sides of the sub-frame.

[0013] Compared with the current technical status of concrete pump trucks where the slewing structure is set on one side of the vehicle, the utility model sets the two material distribution units diagonally on the front and rear sides of the vehicle or in the middle of the front and rear sides of the vehicle symmetrically with the center of the subframe. This symmetrical layout allows the corresponding boom assembly to get rid of spatial restrictions, and realizes that the two sets of boom assemblies can rotate freely around their respective slewing centers during construction, and the flexibility is significantly improved.

[0014] Optionally, the first fabric unit and the second fabric unit are symmetrical to the center of the sub-frame and are respectively installed on the front and rear sides of the sub-frame, including:

[0015] The first fabric unit is arranged at the left front side of the sub-frame, and the second fabric unit is arranged at the right rear side of the sub-frame.

[0016] Optionally, the first fabric unit and the second fabric unit are symmetrical to the center of the sub-frame and are respectively installed on the front and rear sides of the sub-frame, and further include:

[0017] The first fabric unit is arranged at the right front side of the sub-frame, and the second fabric unit is arranged at the left rear side of the sub-frame.

[0018] Optionally, the first fabric unit and the second fabric unit are symmetrical to the center of the sub-frame and are respectively installed on the front and rear sides of the sub-frame, and further include:

[0019] The first fabric unit is arranged at the middle of the front side of the sub-frame, and the second fabric unit is arranged at the middle of the rear side of the sub-frame.

[0020] Regardless of whether the first fabric distribution unit is located at the right front side, the left front side or the middle of the front side of the vehicle (i.e., regardless of whether the second fabric distribution unit is located at the left rear side, the right rear side or the middle of the rear side of the vehicle), as long as the two fabric distribution units are in the same straight line with the center of the frame, a large range of free rotation of the corresponding two arm components and stability of the entire vehicle can be achieved.

[0021] Optionally, the boom includes a first boom section, a second boom section, a third boom section, a fourth boom section and a terminal hose;

[0022] The turntable and the first arm section, the first arm section and the second arm section, the second arm section and the third arm section, and the third arm section and the fourth arm section are respectively hinged via pins;

[0023] The boom sections corresponding to the two sides of each hinge are also connected via a luffing oil cylinder, and the luffing oil cylinder drives two adjacent boom sections to rotate relative to their hinges.

[0024] Optionally, the pumping assembly includes a hopper and a delivery cylinder, and the hopper is mounted at the rear end of the sub-frame;

[0025] The off-car conveying pipe is a three-way elbow pipe, one end of which is connected to the discharge port of the hopper, and the other two ends are respectively connected to the conveying pipes correspondingly arranged in the first distribution unit and the second distribution unit.

[0026] Optionally, the arm assembly adopts a folding arm, a telescopic arm, or a curved arm.

[0027] Optionally, four legs are symmetrically provided on both sides of the subframe for stable support.

[0028] On the other hand, the utility model further provides a concrete pump truck, which includes the double-arm material distribution device described in the first aspect.

[0029] Compared with the prior art, the utility model has the following beneficial effects:

[0030] In the utility model, the two sets of material distribution units arranged on the front and rear sides of the frame respectively correspond to two sets of independent rotating components, turntables and arm components. The corresponding arms can rotate freely in a circumferential direction, and the rotating angle is not limited by the other set of arms. The flexibility is high, the range of activities is wide and the adaptability is strong. At the same time, the two sets of material distribution units can carry out material distribution at the same time to ensure the overall efficiency of material distribution, and can also selectively carry out the operation of a single material distribution unit according to the actual working conditions, which can be more targeted. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of the double-arm material distributing device of the utility model;

[0032] Figure 2 This is a schematic structural diagram of an embodiment of a double-arm material distributing device of the utility model;

[0033] Figure 3 A schematic structural diagram of another embodiment of the double-arm material distributing device of the utility model;

[0034] Figure 4 This is a schematic diagram of the structure of two sets of cloth units working simultaneously in the utility model;

[0035] Figure 5 It is a schematic diagram of the structure in which one set of fabric units is unfolded and another set of fabric units is folded in the utility model;

[0036] Figure 6 for Figure 4 A partial schematic diagram of the pumping assembly and the corresponding off-vehicle delivery pipe.

[0037] In the figure: 1-subframe; 2-first material distribution unit; 3-second material distribution unit; 4-slewing base; 5-slewing mechanism; 6-turntable; 7-arm; 8-conveying pipe; 9-leg; 10-first arm section; 11-second arm section; 12-third arm section; 13-fourth arm section; 14-terminal hose; 15-pumping assembly; 15-1 hopper; 15-2-conveying cylinder; 16-undercarriage conveying pipe; 16-1-three-way elbow. DETAILED DESCRIPTION

[0038] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0039] Example 1

[0040] like Figure 1 As shown, this embodiment provides a double-arm material distribution device, which includes a subframe 1, a pumping assembly 15, an off-vehicle conveying pipe 16, and a group of material distribution units, wherein the material distribution units include a first material distribution unit 2 and a second material distribution unit 3;

[0041] Each material distribution unit includes a rotary base 4, a rotary mechanism 5, a turntable 6 and an arm assembly;

[0042] The slewing base 4 is arranged on the auxiliary frame 1, the slewing mechanism 5 is connected with the slewing base 4 in a coordinated manner, and the slewing mechanism 5 is dynamically coupled with the turntable 6;

[0043] The arm assembly is mounted on the turntable 6, and the rotation of the turntable 6 drives the arm assembly to rotate to different positions;

[0044] The boom assembly includes a boom 7 and a conveying pipe 8, and adjacent booms 7 are unfolded or folded by a variable-length oil cylinder;

[0045] The feed port of the off-car delivery pipe 16 is connected to the pumping assembly 15, and the delivery pipe 8 is correspondingly arranged on one side of the arm 7 and is connected to the discharge port of the off-car delivery pipe 16;

[0046] The first fabric unit 2 and the second fabric unit 3 are symmetrical to the center of the sub-frame 1 and are installed at the front and rear sides of the sub-frame 1 respectively.

[0047] For details, please refer to Figure 1 and Figure 2 The first fabric unit 2 is arranged on the right front side of the sub-frame 1, and the second fabric unit 3 is arranged on the left rear side of the sub-frame 1; in addition, the first fabric unit 2 can also be arranged on the right front side of the sub-frame 1, and the second fabric unit 3 is correspondingly arranged on the left rear side of the sub-frame 1.

[0048] In this embodiment, the centers of the first material distribution unit 2 and the second material distribution unit 3 and the center of the subframe 1 are on the same straight line. The above corresponding layout ensures the stability of the whole vehicle on the one hand; on the other hand, compared with the relevant design of the material distribution components of the traditional concrete pump truck, the material distribution units located on the front and rear sides of the subframe 1 can meet the large-scale material distribution required by the actual working conditions to the greatest extent, ensuring the material distribution efficiency and flexibility in actual operation.

[0049] In addition, since a single set of rotating components in the traditional technology occupies a large space, if a group of cloth units are arranged on the same side of the vehicle at the same time, it will be detrimental to the smooth deployment of the relevant arms 7. The layout of the mutually opposing arrangements in the utility model can cleverly and effectively avoid this drawback and realize the adaptive arrangement of the arms 7.

[0050] Example 2

[0051] Based on Example 1, this embodiment also has the following design:

[0052] In addition, refer to Figure 3 The first fabric unit 2 and the second fabric unit 3 are symmetrical to the center of the sub-frame 1 and are respectively installed on the front and rear sides of the sub-frame 1, and may also include:

[0053] The first fabric distributing unit 2 is disposed at the middle of the front side of the sub-frame 1 , and the second fabric distributing unit 3 is disposed at the middle of the rear side of the sub-frame 1 .

[0054] It is worth noting that no matter whether the first fabric unit 2 is located at the right front side, the left front side or the middle of the front side of the vehicle (that is, no matter whether the second fabric unit 3 is located at the left rear side, the right rear side or the middle of the rear side of the vehicle), as long as the two fabric units are in the same straight line with the center of the frame, the large-range free rotation of the corresponding two arm components and the stability of the whole vehicle can be achieved.

[0055] Therefore, the device provided by the utility model can also be adaptively provided with corresponding slideways on the front and rear sides of the frame, and the rotating assembly can be adaptively matched with the slideways so that the corresponding material distribution unit can make targeted sliding according to actual working conditions during the construction process.

[0056] The boom 7 includes a first boom section 10, a second boom section 11, a third boom section 12, a fourth boom section 13 and a terminal hose 14;

[0057] The turntable 6 and the first arm section 10, the first arm section 10 and the second arm section 11, the second arm section 11 and the third arm section 12, and the third arm section 12 and the fourth arm section 13 are respectively hinged via pins;

[0058] The boom sections corresponding to the two sides of each hinge are also connected via a luffing oil cylinder, and the luffing oil cylinder drives two adjacent boom sections to rotate relative to their hinges.

[0059] refer to Figure 6 As shown, the pumping assembly 15 includes a hopper 15-1 and a delivery cylinder 15-2, and the hopper 15-1 is installed at the rear end of the sub-frame 1;

[0060] The off-car conveying pipe 16 is a three-way elbow 16-1, one end of which is connected to the discharge port of the hopper 15-1, and the other two ends are respectively connected to the conveying pipes 8 correspondingly provided in the first distribution unit 2 and the second distribution unit 3.

[0061] In actual application, the pumping assembly 15 ensures that the material can be delivered to the delivery pipe 8 provided on the boom assembly through the two outlets of the off-car delivery pipe 16, so as to be delivered to the required area in a targeted manner. The slewing mechanism drives the corresponding turntable 6 to drive the entire boom assembly to rotate circumferentially. Furthermore, the variable-length oil cylinders arranged on each boom section can be unfolded or folded according to the actual working conditions. During the entire operation process, the corresponding material distribution unit rotates freely, and the rotation range is not limited, realizing flexible and efficient material distribution operations.

[0062] The arm support assembly adopts a folding arm, a telescopic arm or a curved arm.

[0063] Four supporting legs 9 are symmetrically arranged on both sides of the sub-frame 1. Before determining the work, the supporting legs are driven to complete stable support by controlling the corresponding telescopic cylinders.

[0064] It is worth noting that if Figure 4 and Figure 5 As shown, the two sets of material distribution units can not only carry out material distribution at the same time to ensure the overall efficiency of material distribution, but also selectively carry out the operation of a single material distribution unit according to the actual working conditions, which can be more targeted.

[0065] Example 3

[0066] This embodiment provides a concrete pump truck, which includes the double-arm material distribution device described in Embodiment 1 or Embodiment 2.

[0067] It should be understood that in the description of the present application, the directions or positional relationships indicated by the terms "center", "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, and are only used to explain the relative positional relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present disclosure / application.

[0068] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0069] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

Claims

1. A double-arm material distributing device, characterized in that: It comprises a sub-frame (1), a pumping assembly (15), an off-vehicle delivery pipe (16), and a group of material distribution units, wherein the material distribution units comprise a first material distribution unit (2) and a second material distribution unit (3); Each material distribution unit comprises a rotating base (4), a rotating mechanism (5), a turntable (6) and an arm support assembly; The slewing base (4) is arranged on the auxiliary frame (1), the slewing mechanism (5) is matched and connected with the slewing base (4), and the slewing mechanism (5) is dynamically coupled with the turntable (6); The arm support assembly is mounted on the turntable (6), and the rotation of the turntable (6) drives the arm support assembly to rotate to different positions; The boom assembly comprises a boom (7) and a delivery pipe (8), and adjacent booms (7) are unfolded or folded by means of a variable amplitude oil cylinder; the feed port of the off-car delivery pipe (16) is connected to the pumping assembly (15), and the delivery pipe (8) is correspondingly arranged on one side of the boom (7) and is connected to the discharge port of the off-car delivery pipe (16); The first material distribution unit (2) and the second material distribution unit (3) are symmetrically arranged at the center of the sub-frame (1) and are respectively installed on the front and rear sides of the sub-frame (1).

2. The double-arm material distributing device according to claim 1, characterized in that: The first fabric distribution unit (2) and the second fabric distribution unit (3) are symmetrically arranged at the center of the sub-frame (1) and are respectively installed on the front and rear sides of the sub-frame (1), and further include: The first fabric unit (2) is arranged on the right front side of the sub-frame (1), and the second fabric unit (3) is arranged on the left rear side of the sub-frame (1).

3. The double-arm material distributing device according to claim 1, characterized in that: The first fabric distribution unit (2) and the second fabric distribution unit (3) are symmetrically arranged at the center of the sub-frame (1) and are respectively installed on the front and rear sides of the sub-frame (1), and further include: The first fabric unit (2) is arranged at the middle of the front side of the sub-frame (1), and the second fabric unit (3) is arranged at the middle of the rear side of the sub-frame (1).

4. The double-arm material distributing device according to claim 2 or 3, characterized in that: The arm frame (7) comprises a first arm section (10), a second arm section (11), a third arm section (12), a fourth arm section (13) and a terminal hose (14); The turntable (6) and the first arm section (10), the first arm section (10) and the second arm section (11), the second arm section (11) and the third arm section (12), and the third arm section (12) and the fourth arm section (13) are respectively hingedly connected via pins; The boom sections corresponding to the two sides of each hinge are connected via a luffing oil cylinder, and the luffing oil cylinder drives two adjacent boom sections to rotate relative to the hinge.

5. The double-arm material distributing device according to claim 4, characterized in that: The pumping assembly (15) comprises a hopper (15-1) and a delivery cylinder (15-2); the hopper (15-1) is mounted at the rear end of the sub-frame (1); The off-carriage conveying pipe (16) is a three-way elbow pipe (16-1), one end of which is connected to the discharge port of the hopper (15-1), and the other two ends of which are respectively connected to the conveying pipes (8) correspondingly provided in the first material distribution unit (2) and the second material distribution unit (3).

6. The double-arm material distributing device according to claim 1, characterized in that: The arm support assembly adopts a folding arm, a telescopic arm or a curved arm.

7. The double-arm material distributing device according to claim 1, characterized in that: Four supporting legs (9) are symmetrically provided on both sides of the auxiliary frame (1) for stable support.

8. A concrete pump truck, characterized in that: It comprises a double-arm material distributing device as described in any one of claims 1 to 7.

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