Foamed concrete placing boom

Abstract

The present invention discloses a foamed concrete placer, which includes a main frame; a telescopic boom, one end of which is hinged to the main frame and the other end is a free end suitable for telescoping; a luffing oil cylinder, one end of which is hinged to the telescopic boom and the other end is hinged to the main frame; a winch receiver, which is rotatably installed on the main frame, and a hollow tube is provided in the winch receiver. The two ends of the hollow tube are respectively a first interface and a second interface. The first interface is located at the rotation center of the winch receiver, and the second interface is located on the outer peripheral surface of the winch receiver; a feeding pipe, part of the feeding pipe is wound around the circumference of the winch receiver, part of the feeding pipe is laid along the telescopic boom, one end of the feeding pipe is connected to the second interface, and the other end moves synchronously with the free end of the telescopic boom. The present invention provides a foamed concrete placer, which adopts a telescopic boom, and the feeding pipe on the winch receiver is wound and unwound synchronously with the telescopic boom, improving the pouring quality.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete conveying equipment, and more particularly to a foamed concrete placing boom. Background Art

[0002] A placing boom is a kind of concrete conveying equipment, mainly used for concrete construction and material conveying of buildings such as power stations, docks, airports, and bridges. According to the working mode of the cantilever, the placing boom can be divided into a fixed placing boom and a telescopic placing boom. Compared with the telescopic placing boom, the fixed placing boom has a casting dead angle. And the telescopic placing boom can be roughly divided into the following two types according to the telescopic mode: one is a folding placing boom. When pumping foamed concrete, each bending joint of the folding placing boom forms a form resistance pressure drop, and multiple bending joints are connected, which affects the pore quality of the filling material. The other is a telescopic placing boom. For example, in the Chinese utility model patent of CN2460659Y, a self-propelled concrete belt placing boom is disclosed, and this kind of placing boom belongs to a mobile concrete belt placing boom.

[0003] The most widely used and best mobile concrete belt placing booms in domestic and foreign hydropower project construction are the Creter Crane produced by the American ROTEC company and the Telebelt series truck-mounted telescopic belt placing booms produced by the German PUTZMEISTER company. However, the belt placing boom is suitable for transporting concrete with large particle aggregates and is not suitable for transporting foamed concrete slurry. Because after the concrete slurry is completely mixed with foam to form foamed concrete, it needs to be transported under high pressure through a pipeline. During the transportation process, it should not be in contact with air too much to avoid forming large pores during pouring and affecting the pouring quality. Therefore, there is an urgent need in the market for a telescopic pipeline concrete placing boom. Summary of the Invention

[0004] The present invention aims to provide a foamed concrete placing boom, which adopts a telescopic boom. The guide pipe on the winch receiver unfolds or winds up synchronously with the telescopic boom, reducing the form resistance pressure drop of the foamed concrete pumping path and improving the pouring quality.

[0005] The technical solution adopted in the embodiment of the present invention is: to provide a foam concrete placer, including a main frame; a telescopic boom, one end of which is hinged to the main frame, and the other end is a free end suitable for telescoping; a luffing oil cylinder, one end of which is hinged to the telescopic boom, and the other end is hinged to the main frame; a winch receiver, which is rotatably installed on the main frame, a hollow tube is arranged in the winch receiver, and the two ends of the hollow tube are respectively a first interface and a second interface, the first interface is located at the rotation center of the winch receiver, and the second interface is located on the outer peripheral surface of the winch receiver; a feeding pipe, part of the feeding pipe is wound around the circumference of the winch receiver, part of the feeding pipe is laid along the telescopic boom, one end of the feeding pipe is connected to the second interface, and the other end moves synchronously with the free end of the telescopic boom.

[0006] After adopting the above structure, the telescopic boom installed on the main frame provides a linearly extending bearing platform for the feeding pipe. There are no corners in the linearly extending feeding pipe, reducing the formed form resistance pressure drop; the winch receiver installed on the main frame is used to collect and wind the feeding pipe. During the winding process, the winch receiver needs to rotate around the central axis. A hollow tube is arranged in the central axis at one or both ends. The hollow tube has two opposite ends, which are respectively a first interface and a second interface. The first interface is used to externally connect the pumped foam concrete. It is arranged on the central axis of the winch receiver, and the external pipeline will not rotate eccentrically with the rotation of the winch receiver, improving the stability of the connection of the foam concrete pipeline.

[0007] Preferably, the telescopic boom includes a plurality of booms connected to each other. One end of one of the booms constitutes the free end of the telescopic boom, and a telescopic oil cylinder is arranged between adjacent booms; the plurality of booms form a cantilever with a telescopic structure, and the pouring end is arranged at the free end of the telescopic boom to increase the coverage area of the operation.

[0008] Preferably, each boom includes a cylinder body, the telescopic oil cylinder is installed on the outer surface of the cylinder body, and the cylinder bodies of each boom form an internal channel, and part of the feeding pipe is laid in the internal channel; the cylinder body is a through tubular connection, and the feeding pipe sequentially passes through the inside of the boom cylinder bodies, and the plurality of booms serve as a channel for the movement of the feeding pipe.

[0009] Preferably, a fixing part is arranged on the telescopic boom, the fixing part has a moving channel, and part of the feeding pipe is laid in the moving channel; the moving channel is used to restrict the moving route of the feeding pipe, so that the feeding pipe moves along a predetermined route, and the predetermined route is parallel to the axis of the telescopic boom.

[0010] Preferably, the fixing portion includes a plurality of fixing grooves, each of which is installed one-to-one on each of the arms; the setting of the fixing grooves provides a laying path for the material guide tube to prevent the material guide tube from shifting during the movement.

[0011] Preferably, a roller assembly is provided on the fixed groove, and the material guide tube is abutted against each of the roller assemblies; the rollers are arranged to reduce the friction between the material guide tube and the fixed groove during movement, thereby reducing the wear of the material guide tube caused by friction.

[0012] Preferably, the cross-sectional shape of the roller assembly is linear, V-shaped or U-shaped.

[0013] Preferably, a counterweight block is further included, and the counterweight block is installed at the rear end of the main frame; the counterweight block is provided to balance the center of gravity of the foam concrete placing boom as a whole.

[0014] Preferably, a first slide rail and a first driving rod are installed on the main frame, the first slide rail is installed at the rear end of the main frame, the counterweight is installed on the first slide rail, and the first driving rod is suitable for driving the first slide rail to move toward or away from the telescopic arm; in the process of the telescopic arm extending toward the head end, the center of gravity of the whole material placing boom tilts forward, and the first driving rod drives the counterweight to move toward the rear end along the first slide rail to balance the center of gravity of the whole material placing boom.

[0015] Preferably, a second slide rail and a second driving rod are installed on the main frame, a winch bracket is installed on the second slide rail, the winch receiver is installed on the winch bracket, and the second driving rod is suitable for driving the second slide rail to move along the rotation axis direction of the winch receiver; the second slide rail moves following the winding of the winch receiver, and is used to reduce the bending angle of the material guide pipe between the winch receiver and the telescopic arm, thereby reducing the form resistance and pressure drop of the foam concrete pumping path.

[0016] Preferably, a driving device is installed on the second slide rail or the winch bracket, and the driving device is transmission-connected to the winch receiver and suitable for driving the winch receiver to rotate; the driving device is an electric motor, a gas engine or a fuel engine, which drives the winch receiver to rotate around through a belt or other transmission form, so as to be used for winding or unfolding the material guide tube.

[0017] Preferably, a drop pipe or an extension pipe is further included, and the drop pipe or the extension pipe is connected to the material guide pipe laid on one end of the telescopic arm; the extension pipe is suitable for extending along the direction of the telescopic arm to increase the coverage area of ​​the pouring operation, and the drop pipe is suitable for the pouring end of the pouring operation, which is buried in the concrete slurry during pouring to avoid splashing when pouring the foam concrete slurry and affecting the pouring quality.

[0018] Preferably, a foaming system is installed on the main frame. The first interface a is connected to a rotary joint, and the discharge end of the foaming system is communicated with the rotary joint through a connecting pipe. The foaming system is arranged on the main frame. On the one hand, the foaming system moves along with the movement of the main frame, which is convenient to use. On the other hand, the length between the discharge end of the foaming system and the foam concrete pouring end is constant, ensuring the pouring quality.

[0019] Preferably, it further includes a chassis, and the chassis includes a moving device, and the main frame is installed on the chassis. The arrangement of the moving device is conducive to the movement of the concrete placer, enabling the concrete placer to adapt to various different terrains.

[0020] The embodiments of the present invention have at least the following advantages:

[0021] 1. Compared with the folding concrete placer, there are no folding joints in the foam concrete placer in this embodiment. Therefore, there is no form resistance pressure drop caused by the folding joints. In this embodiment, by optimizing the pumping path of the foam concrete, the form resistance pressure drop in the pumping path is reduced. The pumping path at least includes a guide pipe and a hollow pipe.

[0022] 2. Compared with the belt - type concrete placer, the foam concrete placer in this embodiment adopts a pipeline - type pumping path, which is suitable for transporting foam concrete slurry. The pipeline - type pumping path has advantages such as good sealing, avoiding the direct contact of the foam concrete slurry with air. If the foam concrete slurry directly contacts air, some foams will disperse into the air, which will affect the pouring quality.

[0023] 3. The pore quality of the foam concrete pouring is related to the length of the foam concrete pumping route. On the premise that the quality of the mixed foam concrete is certain, there are differences in the pores of the foam concrete pumped for 60 meters and the foam concrete pumped for 50 meters, affecting the uniformity of the pores on different pouring surfaces. In this embodiment, the foaming system is installed on the main frame, and the length from the discharge end of the foaming system to the foam concrete pouring end is fixed, ensuring the uniformity of the pores on different pouring surfaces and improving the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the telescopic boom of the foam concrete placer in this embodiment when it is retracted;

[0025] Figure 2 It is a schematic structural diagram of the telescopic boom of the foam concrete placer in this embodiment when it is partially extended;

[0026] Figure 3 It is a schematic structural diagram of the tail end of the foam concrete placer in this embodiment after removing the counterweight;

[0027] Figure 4 It is a schematic structural diagram of one side of the foam concrete placer in this embodiment;

[0028] Figure 5 is Figure 4 a partial enlarged view of location A in

[0029] Figure 6 is relative to Figure 4 a schematic structural view of the other side of the foam concrete placer in

[0030] Figure 7 a partial structural view of the first end of the telescopic boom in this embodiment

[0031] Figure 8 is an axial sectional view of the winch receiver in the embodiment

[0032] Figure 9 is along Figure 8 a radial sectional view of the a-a` line in

[0033] Figure 10 is a schematic sectional view of the fixed groove in another embodiment

[0034] Figure 11 is a schematic sectional view of the fixed groove in another embodiment

[0035] Figure 12 is a partial structural view of the first end of the telescopic boom in another embodiment

[0036] Figure 13 is a schematic sectional view of the fixed groove in another embodiment

[0037] Figure 14 is a schematic structural view of one side of the foam concrete placer in another embodiment

[0038] Figure 15 is an axial sectional view of the winch receiver in another embodiment

[0039] Figure 16 is a sectional view of the telescopic boom in another embodiment.

[0040] Explanation of the reference numerals in the figure:

[0041] 1. Main frame; 2. Telescopic boom; 2a. First boom section; 2b. Nth boom section; 3. Winch receiver; 3a. Contour structure; 3b. Bent contour; 4. Feeding pipe; 5. Discharge pipe; 6. Luffing cylinder; 7. First slide rail; 8. Counterweight; 9. Chassis; 10. First drive rod; 11. Fixed groove; 11a. First roller frame; 11b. Nth roller frame; 12. Second slide rail; 13. Winch bracket; 14. Second drive rod; 15. Drive device; 16. Hollow pipe; 16a. First interface; 16b. Second interface; 17. Rotary joint; 18. Foaming system; 19. Connecting pipe; 20. Hydraulic system; 21. Control system; 22. Outrigger; 23. Idler assembly; 24. Telescopic cylinder; 25. Extension pipe; 26. Groove. Detailed implementation mode

[0042] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0044] The embodiment of the present invention aims to provide a foam concrete placer, which adopts a telescopic telescopic boom 2, and the feeding pipe 4 on the winch receiver 3 is deployed or retracted synchronously with the telescopic boom 2. Compared with the folding placer, the form resistance pressure drop of the foam concrete pumping path is reduced, and the pouring quality is improved.

[0045] In order to better implement the above technical solution, the above technical solution will be described in detail below with reference to the specification drawings and specific implementation modes. For the convenience of understanding, in this specification, Figure 3 The basic drawing described by the orientation is Figure 3 The extending direction of the telescopic boom 2 in is the head end. And there is a tail end opposite to the head end, the left hand side facing the head end is the left end, and there is a right end opposite to the left end. For example, Figure 3 In, the foaming system 18 is located on the left side of the telescopic boom 2.

[0046] Embodiment 1

[0047] As Figure 1-2 shown, the technical solution adopted in the embodiment of the present invention is: to provide a foamed concrete placer, including a main frame 1;

[0048] A telescopic boom 2, one end of which is hinged to the main frame 1 and the other end is a free end suitable for telescoping;

[0049] A luffing oil cylinder 6, one end of which is hinged to the telescopic boom 2 and the other end is hinged to the main frame 1;

[0050] A winch receiver 3, which is rotatably installed on the main frame 1. A hollow tube 16 is provided in the winch receiver 3. The two ends of the hollow tube 16 are respectively a first interface 16a and a second interface 16b. The first interface 16a is located at the rotation center of the winch receiver 3, and the second interface 16b is located on the outer peripheral surface of the winch receiver 3;

[0051] A material guiding pipe 4, part of the material guiding pipe 4 is wound around the circumference of the winch receiver 3, part of the material guiding pipe 4 is laid along the telescopic boom 2, one end of the material guiding pipe 4 is connected to the second interface 16b, and the other end moves synchronously with the free end of the telescopic boom 2.

[0052] Further, in this embodiment, a multi-degree-of-freedom telescopic boom structure composed of the main frame 1, the telescopic boom 2 and the luffing oil cylinder 6, wherein the telescopic boom 2 extends or contracts in the extending direction, the luffing oil cylinder 6 is used to move the luffing and to adjust the height of the free end of the telescopic boom 2. The winch receiver 3 is used to wind up the material guiding pipe 4. The winch receiver 3 is generally a cylindrical or frustum-shaped structure. In this embodiment, the winch receiver adopts a cylindrical structure and has a central axis as the rotation axis.

[0053] Further, the telescoping of the telescopic boom 2 and the winding of the winch receiver 3 are carried out synchronously. That is, when the telescopic boom 2 extends, the material guiding pipe 4 moves along with the extension of the telescopic boom 2, and the winch receiver 3 rotates synchronously to unwind the material guiding pipe 4 on its outer peripheral surface. When the telescopic boom 2 contracts, the winch receiver 3 rotates in the opposite direction synchronously to wind up the material guiding pipe 4.

[0054] Furthermore, the relative positions of the luffing oil cylinder 6 and the telescopic boom 2 are different, which can be divided into three types: front-mounted, rear-mounted and rear-pulled. In this embodiment, a front-mounted luffing oil cylinder 6 is adopted, which requires less thrust and can improve the force condition of the lifting boom. In another embodiment, a rear-mounted or rear-pulled luffing oil cylinder 6 can be used to replace the front-mounted luffing oil cylinder 6 in this embodiment.

[0055] Further, the inner diameter of the material guiding pipe 4 is between 50 - 150 mm, and 100 mm is selected in this embodiment. The outer diameter of the winch receiver 3 is between 0.6 m and 2.5 m, preferably between 1.0 m and 1.8 m. A spiral contour structure 3a is provided on the outer surface of the winch receiver 3, and the spiral groove line is adapted to the outer diameter of the material guiding pipe 4, and the material guiding pipe 4 wound on the surface of the winch receiver 3 fits with the contour structure 3a.

[0056] Combined with Figures 3 to 6 shown, the winch receiver 3 on the main frame 1 is horizontally arranged in the left - right direction. As Figure 8 shown, the winch receiver 3 is a solid structure, and the hollow pipe 16 is actually a cavity provided inside the solid structure. The first interface 16a of the hollow pipe 16 is arranged at the center of the right - end radius of the winch receiver 3. The second interface 16b of the hollow pipe 16 is arranged on the left - most surface of the outer circumference of the winch receiver 3, so as to increase the stroke of the hollow pipe 16 and facilitate reducing the form - resistance pressure drop of the hollow pipe 16.

[0057] Specifically, the path of the hollow pipe 16 is divided into a horizontal direction and a vertical direction. It can be seen from Figure 8 that there is a bend structure in the horizontal direction of the hollow pipe 16, and the radius of the bend is not less than the outer - circumference radius of the winch receiver 3. Combined with Figure 9 shown, in the vertical direction of the hollow pipe 16, there is also a bend structure, and this bend interface is used to reduce the bending angle of the connection between the second interface 16b and the material guiding pipe 4.

[0058] Further, a bent contour 3b is also provided on the outer - circumference surface of the winch receiver 3. The bent contour 3b has a transitional curve, which is used to guide the material guiding pipe 4 on the contour structure 3a to the second interface 16b, reducing the bend of the connection between the material guiding pipe 4 and the second interface 16b.

[0059] Specifically, the telescopic boom 2 includes a plurality of booms connected to each other. One end of one boom constitutes the free end of the telescopic boom 2, and a telescopic oil cylinder 24 is provided between adjacent booms.

[0060] Specifically, each boom includes a cylinder body.

[0061] Further, the plurality of booms included in the telescopic boom 2 are connected together one by one, and the telescopic oil cylinder 24 is installed inside the cylinders of the plurality of booms. Taking Figure 7 as an example, the first - stage boom 2a is connected to the second - stage boom. One end of the telescopic oil cylinder 24 between the two is connected to the inner wall of the cylinder of the first - stage boom 2a, and the other end of the telescopic oil cylinder 24 is connected to the inner wall of the cylinder of the second - stage boom. The telescopic oil cylinder 24 drives the first - stage boom 2a and the second - stage boom to extend or contract.

[0062] Specifically, a fixing part is provided on the telescopic boom 2. The fixing part has a moving channel, and a part of the material guide pipe 4 is laid in the moving channel. The fixing part is provided to restrict the moving route of the material guide pipe 5 so that the material guide pipe 5 moves along a predetermined route. In this embodiment, the predetermined route is parallel to the axis of the telescopic boom 2.

[0063] Furthermore, the fixing part in this embodiment is a linear groove structure. The straight line is parallel to the axis of the telescopic boom. The fixing part includes a plurality of fixing grooves 11, and each fixing groove 11 is correspondingly installed on each boom; the plurality of fixing grooves 11 jointly construct a moving channel.

[0064] Furthermore, in this embodiment, each fixing groove 11 is correspondingly installed at the head end of each boom. Figure 7 For example, the first roller frame 11a is correspondingly installed on the first boom 2a, the second roller frame is correspondingly installed on the second boom, the Nth roller frame 11b is correspondingly installed on the Nth boom 2b. The second roller frame moves synchronously with the second boom. After moving, the first roller frame 11a and the second roller frame are arranged with gaps, and the material guide pipe 4 placed between the first roller frame 11a and the second roller frame is suspended in the air. After the first boom 2a and the second boom are retracted, the first roller frame 11a and the second roller frame are in contact with each other at the head and tail or there is a gap between the head and tail.

[0065] Specifically, in this embodiment, a plurality of idler assemblies 23 are installed in the fixing groove 11 on the first boom 2a. The cross-sectional shape of the idler assembly 23 is linear, that is, a driving roller path is constructed.

[0066] In another embodiment, as Figure 12 shown, the fixing part includes a plurality of fixing grooves 11, and each fixing groove 11 is correspondingly installed on each boom. The plurality of fixing grooves 11 are connected end to end in sequence. After the telescopic boom 2 is retracted, the fixing grooves 11 contract following the contraction of the boom. The cross-sectional view of the fixing grooves 11 after contraction is as Figure 13 shown.

[0067] In another embodiment, as Figure 11 shown, the cross-sectional shape of the idler assembly 23 is V-shaped.

[0068] Specifically, as Figure 4 shown, the foam concrete placer further includes a counterweight 8, and the counterweight 8 is installed at the tail end of the main frame 1.

[0069] Furthermore, the counterweight 8 is used to balance the center of gravity of the placer. Because the extension or contraction of the telescopic boom 2 is likely to cause the center of gravity of the placer to be unbalanced, the counterweight 8 is correspondingly arranged at the tail end of the main frame 1, echoing the telescopic boom 2 at the head and tail.

[0070] Specifically, as Figure 3As shown, a first slide rail 7 and a first drive rod 10 are installed on the main frame 1. The first slide rail 7 is installed at the tail end of the main frame 1. A counterweight 8 is installed on the first slide rail 7. The first drive rod 10 is adapted to drive the first slide rail 7 to move in a direction closer to or away from the telescopic boom 2.

[0071] Furthermore, the setting of the first slide rail 7 is used to increase the distance between the counterweight 8 and the telescopic boom 2, thereby extending the moment. The setting of the first drive rod 10 is for facilitating the dynamic adjustment of the head and tail or front and back positions of the counterweight 8.

[0072] Specifically, a second slide rail 12 and a second drive rod 14 are installed on the main frame 1. A winch bracket 13 is installed on the second slide rail 12. The winch receiver 3 is installed on the winch bracket 13. The second drive rod 14 is adapted to drive the second slide rail 12 to move along the rotation axis direction of the winch receiver 3.

[0073] Furthermore, in this embodiment, the winch receiver 3 is horizontally arranged in the left - right direction, and the second interface 16b is located on the outer peripheral surface of the left side of the winch receiver 3. When the winch receiver 3 winds the guide pipe 4, the bending angle of the guide pipe 4 between the winch receiver and the telescopic boom 2 will change. The change in the bending angle will surely affect the foam quality in the foamed concrete, and ultimately affect the pouring quality. Therefore, the second slide rail 12 and the second drive rod 14 are provided. While the winch receiver 3 winds the guide pipe 4, the second drive rod 14 drives the winch bracket 13 to move synchronously, so as to synchronously move the winch receiver 3 and reduce the change range of the bending angle of the guide pipe 4.

[0074] In another embodiment, the winch receiver 3 is horizontally arranged in the head - tail direction, the second slide rail 12 is arranged along the axial direction of the winch receiver 3, or the second slide rail 12 is parallel to the central axis of the winch receiver 3.

[0075] Specifically, a driving device 15 is installed on the second slide rail 12. The driving device 15 is in transmission connection with the winch receiver 3 and is adapted to drive the winch receiver 3 to rotate.

[0076] In another embodiment, the driving device is installed on the winch bracket 13. The driving device 13 is in transmission connection with the winch receiver 3 and is adapted to drive the winch receiver 3 to rotate.

[0077] Furthermore, the driving device 15 is an electric motor, a gas engine or a fuel engine, and drives the whole body of the winch receiver 3 to rotate through a transmission form such as a belt, for winding or unwinding the guide pipe 4. In this embodiment, the driving device 15 adopts an electric motor.

[0078] Specifically, as Figure 7 shown, the foamed concrete placer further includes a blanking pipe 5 or an extension pipe 25. The blanking pipe 5 or the extension pipe 25 is connected to the free end of the guide pipe 4.

[0079] Furthermore, the pouring end of the foamed concrete includes the following types. One is that the free end of the guide pipe 4 droops naturally, and the free end of the guide pipe 4 itself serves as the pouring end. Another is that the free end of the guide pipe 4 is arranged at the free end of the telescopic boom 2, that is, the guide pipe 4 is arranged at the head end of the Nth boom 2b, and a blanking pipe 5 is connected through a flange. The blanking pipe 5 droops naturally, and the other end of the blanking pipe 5 serves as the pouring end. Another is that the free end of the guide pipe 4 is arranged at the free end of the telescopic boom 2, and an extension pipe is installed at the free end of the telescopic boom 2. A part of the extension pipe extends along the extending direction of the telescopic boom 2, and the other part droops naturally. One end of the extension pipe is connected to the guide pipe 4, and the other end serves as the pouring end of the foamed concrete.

[0080] Specifically, it further includes a chassis 9. The chassis 9 includes a moving device, and the main frame 1 is installed on the chassis 9.

[0081] Furthermore, the moving device on the chassis 9 adopts a crawler structure. The main frame 1 can rotate 360° around the chassis 9 and can also move through the crawlers.

[0082] Even further, outriggers 22 are also provided on the chassis 9. The outriggers 22 are used to increase the span and can stand firm when pumping foamed concrete over a long distance without tipping over.

[0083] In another embodiment, the moving device in the chassis 9 can adopt a rail-type moving device, a wheel-type moving device or a water surface moving device. The water surface moving device includes a floating dock and a barge.

[0084] Specifically, a hydraulic system 20 and a control system 21 are also installed on the main frame 1. The control system 21 respectively drives the luffing cylinder 6, the first driving rod 10, the second driving rod 14 and the telescopic cylinder 24 by controlling the hydraulic system 20. The control system 21 can also directly or indirectly control the driving device 15 and the outriggers 22 and other components to work.

[0085] The working principle of this embodiment is as follows:

[0086] The foaming system 18 is externally provided. The connecting pipe 19 has a tee structure. One end of the connecting pipe 19 is connected to the discharging end of the foaming system 18, the other end of the connecting pipe 19 is communicated with the rotary joint 17 connected to the first interface 16a, and the remaining end of the connecting pipe 19 is the feeding end of the cement slurry. The foam from the foaming system 18 and the cement slurry are mixed in the connecting pipe 19 to form a foamed concrete slurry. The foamed concrete slurry sequentially passes through the rotary joint 17, the hollow pipe 16 and the guide pipe 4 from one end of the connecting pipe 19 until it is transported to the pouring end of the foamed concrete.

[0087] During the pouring process, as the pouring position of the distributing machine changes, either the foaming system 18 is moved synchronously when the distributing machine is moved, or the distributing machine is moved, and a pipeline is added between the foaming system 18 and the first interface 16a to extend the pumping path.

[0088] In another embodiment, the foaming system 18 is installed on the main frame 1, and the foaming system 18 moves following the distributing machine. The connecting pipe 19 has a tee structure. One end of the connecting pipe 19 is connected to the discharging end of the foaming system 18, the other end of the connecting pipe 19 communicates with the rotary joint 17 connected to the first interface 16a, and the remaining end of the connecting pipe 19 is the feeding end of the cement slurry. The foam from the foaming system 18 and the cement slurry are mixed in the connecting pipe 19 to form foam concrete slurry, and the foam concrete slurry passes through the rotary joint 17, the hollow pipe 16 and the material guiding pipe 4 at least in sequence from one end of the connecting pipe 19 until it is transported to the pouring end of the foam concrete. Among them, the length of the pumping path of the foam concrete from the discharging end of the connecting pipe 19 to the pouring end of the foam concrete is a fixed value.

[0089] Specifically, a roller assembly 23 is suspended on each fixing groove 11, the material guiding pipe 4 abuts against each roller assembly 23, the foam concrete slurry passes through the rotary joint 17, the hollow pipe 16 and the material guiding pipe 4 at least in sequence from one end of the connecting pipe 19 until it is transported to the pouring end of the foam concrete, and the length from the discharging end of the foaming system 18 to the pouring end of the foam concrete is between 7 - 50 m, preferably between 10 - 25 m.

[0090] In another embodiment, only the roller assembly 23 is suspended on the fixing groove 11 on the first boom 2a, and a relative displacement occurs between the material guiding pipe 4 located on the first boom 2a and the inner wall of the fixing groove 11. In order to reduce the relative friction between the material guiding pipe 11 and the inner wall surface of the fixing groove 11, the roller assembly 23 is provided. During the movement of the material guiding pipe 11, the rollers on the roller assembly 23 rotate to reduce friction.

[0091] In another embodiment, the winch receiver 3 is vertically arranged, and the second slide rail 12 and the second driving rod 14 are vertically arranged accordingly.

[0092] In another embodiment, as Figure 10 shown, the cross-sectional shape of the roller assembly 23 in this embodiment is U-shaped.

[0093] In another embodiment, as Figure 16 shown, the inside of the boom is hollow, and the hollow area is used to install the telescopic oil cylinder 24. The fixing part in this embodiment includes a plurality of grooves 26. A groove 26 is provided on the upper edge of each boom, and the plurality of grooves 26 together form a linear groove structure, and this groove structure forms a moving channel for laying the material guiding pipe 5 to limit the movement of the material guiding pipe 5.

[0094] In another embodiment, the fixing part includes a plurality of fixing frames, each of which is correspondingly installed at the head end of each boom, and the sizes and inner diameters of each fixing frame are the same. The extension lines between the fixing frames and the inner walls of the fixing frames together form a moving channel, and the material guiding pipe 5 is laid in the moving channel to limit the movement of the material guiding pipe 5.

[0095] In another embodiment, the telescopic oil cylinder 24 is arranged on the surface of the telescopic boom 2, and the space inside the cylinder body is used to move the material guiding pipe 4. Specifically, as Figure 14 shown, each boom includes a cylinder body, the telescopic oil cylinder 24 is installed on the outer surface of the cylinder body, and the cylinder body forms an internal channel, and part of the material guiding pipe 4 is laid in the internal channel. In this embodiment, the internal channel functions as a fixing part, that is, the internal channel is used to constrain the moving route of the material guiding pipe so that the material guiding pipe moves along the established route, and the established route is parallel to the axis of the telescopic boom.

[0096] In another embodiment, as Figure 15 shown, in this embodiment, the winch receiver 3 is of a hollow structure to reduce the weight of the winch receiver 3 and facilitate the driving device 15 to drive its rotation. And two hollow pipes 16 are arranged inside the winch receiver 3. The hollow pipes 16 have circular pipe walls, and the two hollow pipes 16 are symmetrically arranged with the center of gravity of the winch receiver 3 as the center, and the two first interfaces 16a belong to the radial centers at both ends of the winch receiver 3.

[0097] Furthermore, by arranging the two hollow pipes 16, on the one hand, it is convenient for the foaming system 18 located on the left or right side of the winch receiver 3 to be connected, and on the other hand, it is to balance the structural center of the winch receiver 3 and reduce the vibration generated by the rotation of the winch receiver 3.

[0098] The above describes the preferred embodiments of the present invention, but it should not be construed as a limitation to the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to change. All changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A foam concrete placer, characterized in that, Comprising a main frame (1); a telescopic boom (2), one end of which is hinged to the main frame (1) and the other end is a free end adapted to be telescopic; a luffing oil cylinder (6), one end of which is hinged to the telescopic boom (2) and the other end is hinged to the main frame (1); a winch receiver (3) rotatably mounted on the main frame (1), a hollow tube (16) being provided in the winch receiver (3), the two ends of the hollow tube (16) being a first interface (16a) and a second interface (16b) respectively, the first interface (16a) being located at the rotation center of the winch receiver (3) and the second interface (16b) being located on the outer circumferential surface of the winch receiver (3); a guide pipe (4), part of the guide pipe (4) being wound around the circumference of the winch receiver (3), part of the guide pipe (4) being laid along the telescopic boom (2), one end of the guide pipe (4) being connected to the second interface (16b) and the other end moving synchronously with the free end of the telescopic boom (2). The winch receiver (3) is of a solid structure, the hollow tube (16) being a cavity provided in the solid structure, the first interface (16a) of the hollow tube (16) being provided at the center of the right end in the radial direction of the winch receiver (3), and the second interface (16b) of the hollow tube (16) being provided on the leftmost surface of the outer circumference of the winch receiver (3). A second slide rail (12) and a second driving rod (14) are mounted on the main frame (1), a winch support (13) is mounted on the second slide rail (12), the winch receiver (3) is mounted on the winch support (13), and the second driving rod (14) is adapted to drive the second slide rail (12) to move along the rotation axis direction of the winch receiver (3).

2. The foam concrete placing boom according to claim 1, wherein: The telescopic boom (2) comprises a plurality of booms connected to each other, one end of one of the booms constituting the free end of the telescopic boom (2), and a telescopic oil cylinder (24) being provided between adjacent booms.

3. The foam concrete placer according to claim 2, wherein: Each boom comprises a cylinder body, the telescopic oil cylinder (24) being mounted on the outer surface of the cylinder body, and the cylinder bodies of the booms form an internal passage, and part of the guide pipe (4) is laid in the internal passage.

4. The foamed concrete placer according to claim 1, wherein: A fixing part is provided on the telescopic boom (2), the fixing part having a moving passage, and part of the guide pipe (4) is laid in the moving passage.

5. The foam concrete placer according to claim 4, wherein: The fixing part comprises a plurality of fixing grooves (11), and each fixing groove (11) is correspondingly mounted on each boom.

6. The foam concrete placer according to claim 5, characterized in that: A roller assembly (23) is provided on the fixing groove (11), and the guide pipe (4) abuts against each roller assembly (23).

7. The foamed concrete placer according to claim 1, characterized in that: It further comprises a counterweight (8), and the counterweight (8) is mounted at the tail end of the main frame (1).

8. The foam concrete placer according to claim 7, characterized in that: A first slide rail (7) and a first driving rod (10) are mounted on the main frame (1), the first slide rail (7) is mounted at the tail end of the main frame (1), the counterweight (8) is mounted on the first slide rail (7), and the first driving rod (10) is adapted to drive the first slide rail (7) to move in a direction close to or away from the telescopic boom (2).

9. The foam concrete placer according to claim 1, characterized in that: A driving device (15) is installed on the second slide rail (12) or the winch bracket (13), and the driving device (15) is in transmission connection with the winch receiver (3) and is adapted to drive the winch receiver (3) to rotate.

10. The foam concrete placer according to any one of claims 1-9, characterized in that: It further includes a blanking pipe (5) or an extension pipe (25), and the blanking pipe (5) or the extension pipe (25) is connected to one end of the telescopic boom (2) where the material guiding pipe (4) is laid.

11. The foam concrete placer according to claim 10, characterized in that: A foaming system (18) is installed on the main frame (1), a rotary joint (17) is connected to the first interface (16a), and the discharging end of the foaming system (18) is communicated with the rotary joint (17) through a connecting pipe (19).

12. The foam concrete placer according to claim 11, characterized in that: It further includes a chassis (9), the chassis (9) includes a moving device, and the main frame (1) is installed on the chassis (9).

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