A concrete mixing device for a pump truck

Abstract

The present application relates to a concrete mixing device for a pump truck. Through the overall improvement of the gantry, drive mechanism, hopper and the coordination relationship between them, the structure of arranging a beam and a hopper lifting pulley on the top of the gantry, which is commonly adopted in the prior art, is abandoned. At least two parallel pillars are used to form a slideway, and the beam on the top of the gantry is omitted or the beam is arranged in the middle of the pillar, thereby reducing the height of the entire vehicle, avoiding interference between the gantry and the pump truck boom, and ensuring the normal operation of the mixing device; by improving the coordination relationship between the hopper and the pillar, the length of the pillar is shortened, avoiding the pillar from extending to the ground, and overcoming the defect that the slideway needs to be disassembled when the pump truck is in the driving state; by improving the drive mechanism and the hopper structure, the overall structure of the drive device is simplified, and the stability and safety of the hopper lifting are improved; by improving the hopper mixing chamber, the mixer can continuously mix concrete, thereby improving the working efficiency of the mixing device, reducing energy consumption and labor costs, and has broad market application prospects.

Description

Technical Field

[0001] The present application relates to the technical field of construction engineering, and more particularly to a concrete mixing device for a pump truck. Background Art

[0002] Existing concrete mixing devices usually include a bracket, a mixing barrel, a gantry, a hopper and a traction mechanism, such as Figure 16 and 17 As shown, the mixing barrel is installed on the bracket, the gantry is installed on one side of the mixing barrel, a crossbeam is provided on the top of the gantry, a fixed pulley is installed on the crossbeam, the traction mechanism includes a winch drum, a steel wire rope is wound inside the winch drum, the steel wire rope is connected to the hopper via the fixed pulley provided on the top crossbeam of the gantry, and the hopper is driven to move up and down along the gantry through the traction mechanism.

[0003] Chinese patent CN109605573A discloses a high safety performance concrete mixer that adopts the above structure. Figure 18 As shown in the figure, when the winch drum rotates, the wire rope pulls the bucket, thereby driving the bucket to move up and down along the guide rail of the support.

[0004] In the above device, the crossbeam provided on the top of the gantry and the fixed pulley mounted on the crossbeam are key components for utilizing the traction mechanism to achieve the up and down movement of the hopper along the gantry. However, the above structure has many defects:

[0005] 1. It limits the application of the traction mechanism. For example, when the stirring device is installed on a pump truck, the feed port of the mixing barrel is located at a higher position at the rear of the pump truck. In this case, the top crossbeam of the gantry will interfere with the boom of the pump truck, and the gantry cannot be installed close to the feed port of the mixing barrel. Even if it is installed to the feed port of the mixing barrel, the loading operation cannot be completed smoothly.

[0006] 2. The crossbeam on the top of the gantry invisibly increases the height of the vehicle, increases the difficulty of vehicle body modification, and makes it difficult to meet the relevant standards for pump truck body modification.

[0007] 3. The unloading guide chute is designed horizontally, which is not conducive to smooth unloading.

[0008] 4. The slide of the gantry needs to be tilted and extended to the ground. The position of the hopper roller is set at the bottom. When the pump truck is not in use, the lower slide close to the ground needs to be disassembled. When in use, the gantry screws need to be fixed, and the lower slide needs to be connected to the ground and fixed firmly. The operation is cumbersome, and repeated disassembly poses a safety hazard and increases the incidence of failures.

[0009] 5. The traction mechanism has a complex structure, is prone to failure and is inconvenient to use. The traction mechanism has a complex structure and the wiring of the hopper wire rope is very cumbersome. Once the wiring is chaotic or fails, a lot of manpower is required to rewire the wires, which is very inconvenient to use and poses a great safety hazard.

[0010] 6. The working efficiency of the mixing device is low. The mixing device only has one hopper. The process of loading and unloading the hopper into the mixing barrel often takes a lot of time, causing the mixing barrel to be idling during the loading period, wasting energy and having low working efficiency, which cannot meet the requirements of large construction sites.

[0011] In view of this, it is an urgent problem to be solved by those skilled in the art to design a concrete mixing device for a pump truck with a reasonable structure, reliable performance, high working efficiency and meeting the vehicle body modification standards. Summary of the Invention

[0012] In order to solve the above problems in the prior art, the present application proposes a concrete mixing device for a pump truck.

[0013] The mixing device abandons the structural design of setting a crossbeam and lifting hopper pulley on the top of the gantry commonly adopted in the prior art. Through the overall improvement of the gantry, drive mechanism, hopper and their mutual coordination, at least two parallel pillars are used to form a slide, eliminating the crossbeam on the top of the gantry or setting the crossbeam in the middle of the pillar, so that the pump truck arm can fall into the slide, thereby minimizing the height of the entire vehicle, avoiding interference between the gantry and the pump truck arm, and ensuring the normal operation of the mixing device; by improving the coordination relationship between the hopper and the gantry, the length of the pillar is shortened, avoiding the pillar extending to the ground, and overcoming the disadvantage that the pump truck needs to disassemble the slide close to the ground when the driving state is overcome; by improving the corresponding structures of the drive mechanism and the hopper, the overall structure of the mixing device is simplified, the stability and safety of the hopper lifting are improved, and the use process is more convenient; by improving the hopper mixing chamber, the mixer can continuously mix concrete, thereby improving the working efficiency of the mixing device, and reducing energy consumption and labor costs; the mixing device provided by the present application has broad market application prospects.

[0014] To achieve the purpose of this application, the following technical solutions are adopted:

[0015] A concrete mixing device for a pump truck, characterized in that it includes a base, a mixing barrel, a gantry, a hopper and a driving mechanism, wherein:

[0016] The base supports the mixing barrel, gantry, hopper and driving mechanism;

[0017] The gantry comprises at least two parallel pillars, which form a slideway for the hopper and are arranged on both sides of the mixing barrel;

[0018] The hopper includes a hopper guide mechanism, which cooperates with the support guide to guide the hopper to move along the support;

[0019] The driving mechanism provides power for the movement of the hopper.

[0020] Preferably, a hopper cover is hinged at the outlet of the hopper, the hopper cover is connected to a hopper cover roller, and a discharge guide groove adapted to the hopper cover roller is provided on the gantry.

[0021] Preferably, the guide track of the discharge guide trough is a curve.

[0022] Preferably, the hopper guide mechanism includes at least one first guide wheel and at least one second guide wheel, and the first guide wheel and the second guide wheel move relative to each other along the support to guide the movement of the hopper; the first guide wheel and the second guide wheel are arranged at a position above the middle of the hopper body.

[0023] Preferably, it also includes a sliding rod, which extends into the groove of the pillar, and the sliding rod is fixedly connected to the hopper and moves together with it; the driving mechanism includes a hydraulic cylinder, one end of the hydraulic cylinder is hinged to the pillar or base or pump truck frame, and the other end is connected to the sliding rod, and the sliding rod is driven by the hydraulic cylinder to drive the hopper to move together.

[0024] Preferably, a pulley can be installed in the slideway of the slide rod or pillar, and the pulley is a longitudinal wheel or a transverse wheel, and the longitudinal wheel or the transverse wheel is used alone or the longitudinal wheel and the transverse wheel are used in combination; the hydraulic cylinder includes a multi-stage cylinder or a superimposed cylinder.

[0025] Preferably, the driving mechanism includes at least one hydraulic cylinder or at least one winch; the hydraulic cylinder is selected from a common hydraulic cylinder, a multi-stage cylinder or a superimposed cylinder.

[0026] Preferably, the cross section of the pillar is in an I-shape and includes two opposite grooves, and the first guide wheel and the second guide wheel are arranged in the two grooves opposite to each other.

[0027] Preferably, the driving mechanism includes at least one hydraulic cylinder, one end of which is hinged to the support or the base or the pump truck frame, and the other end of which is hinged to the hopper.

[0028] Preferably, the driving mechanism includes at least one hydraulic cylinder, a sliding wheel and a traction member;

[0029] One end of the hydraulic cylinder is hinged to the base or the support or the pump truck frame;

[0030] One end of the traction member starts from the other end of the hydraulic cylinder or the sliding wheel provided on the other end of the hydraulic cylinder; the other end of the traction member passes through the sliding wheel on the upper part of one side pillar and the sliding wheel on the hopper and is fixed to the other side pillar or the base or the pump truck frame;

[0031] The sliding wheel is a single fixed pulley, a pulley block or a sprocket, and the traction member is a pulley rope or a chain.

[0032] Preferably, the driving mechanism includes at least one hydraulic cylinder, a sliding wheel and a traction member;

[0033] One end of the hydraulic cylinder is hinged to the base or the support or the pump truck frame;

[0034] One end of the traction member starts from the pillar or the pump truck frame, and the other end of the traction member passes through the sliding wheel provided at the other end of the hydraulic cylinder, the sliding wheel on the upper part of one pillar, and the sliding wheel on the hopper, and is then fixed to the other side pillar or the base or the pump truck frame;

[0035] The sliding wheel is a single fixed pulley, a pulley block or a sprocket, and the traction member is a pulley rope or a chain.

[0036] Preferably, the driving mechanism includes two hydraulic cylinders, a sliding wheel and a traction member;

[0037] The two hydraulic cylinders are respectively arranged on both sides of the pillar, and one end of the hydraulic cylinder is arranged on the pillar or the base or the pump truck frame; each hydraulic cylinder is equipped with a corresponding traction member, one end of which starts from the pillar or the pump truck frame, and the other end of the traction member passes through the sliding wheel on the other end of the hydraulic cylinder and the sliding wheel on the upper part of one pillar and is fixed to the hopper. The two hydraulic cylinders are arranged in the same manner;

[0038] The sliding wheel is a single fixed pulley, a pulley block or a sprocket, and the traction member is a pulley rope or a chain.

[0039] Preferably, the driving mechanism includes two hydraulic cylinders, a sliding wheel and a traction member;

[0040] The two hydraulic cylinders are respectively arranged on both sides of the pillar, and one end of the hydraulic cylinder is arranged on the pillar or the base or the pump truck frame; each hydraulic cylinder is equipped with a corresponding traction member, one end of the traction member starts from the other end of the hydraulic cylinder or the sliding wheel arranged on the other end of the hydraulic cylinder, and the other end of the traction member passes through the sliding wheel on the upper part of one side of the pillar and is fixed to the hopper. The two hydraulic cylinders are arranged in the same way;

[0041] The sliding wheel is a single fixed pulley, a pulley block or a sprocket, and the traction member is a pulley rope or a chain.

[0042] Preferably, the driving mechanism includes a winch, a sliding wheel and a traction member;

[0043] The hoist is arranged on a support or a base;

[0044] When one winch is provided, the winch has one drum or two drums. When the winch has one drum, one end of the traction member is wound on the drum of the winch, and the other end of the traction member is fixed to the pillar or base or pump truck frame on the other side after passing through the sliding wheel on the upper part of the pillar and the sliding wheel on the hopper; when the winch has two drums, the two drums are coaxially or connected, and the two drums are respectively provided on both sides of the two pillars and operate synchronously, each drum is equipped with a corresponding traction member, one end of the traction member is wound on one drum, and the other end is fixed to the hopper after passing through the sliding wheel on the upper part of the pillar on the same side, and the drums on both sides are arranged in the same way;

[0045] When two winches are provided, the two winches are respectively provided on both sides of the two pillars. Each winch has a drum and a corresponding traction member. One end of the traction member is wound on the drum of the winch, and the other end of the traction member is passed around the sliding wheel on the upper part of the pillar and fixed on the hopper. The arrangement of the winches on both sides is the same.

[0046] The sliding wheel is a pulley or a sprocket; the traction member is a pulley rope or a chain.

[0047] Preferably, the gantry further comprises at least one second pillar, the second pillar being arranged in a middle position parallel to the pillar, and the second pillar being shorter than the length of the pillar;

[0048] There are two hoppers, and a hopper guide mechanism and a hopper chute are respectively provided on both sides of the hopper;

[0049] One side of each hopper is guided and matched with the corresponding pillar through the hopper guide mechanism, and the other side of each hopper is slidably matched with the second pillar through its own hopper chute and the second sliding rod matched therewith.

[0050] Preferably, the mixing barrel has two independent mixing chambers, each mixing chamber has an independent mixing barrel outlet, and the two mixing chambers are correspondingly configured with two hoppers.

[0051] Preferably, the number of the second pillars is one or two;

[0052] When there is only one second pillar, the second pillar is shared by two hoppers, and each hopper is slidably engaged with the second pillar through its own hopper chute and a second sliding rod engaged therewith; the hopper chute is used to accommodate the second sliding rod, and the cross-sectional shape of the hopper chute is adapted to the cross-sectional shape of the second sliding rod; two sides of the second pillar have two grooves for accommodating the second sliding rod, and the cross-sectional shape of the grooves of the second pillar is adapted to the cross-sectional shape of the second sliding rod;

[0053] When there are two second pillars, the two second pillars cooperate with the pillars on both sides of the gantry to form a hopper slide, and each hopper slides with the corresponding second pillar through its own hopper chute and the second sliding rod that cooperates with it; the hopper chute is used to accommodate the second sliding rod, and the cross-sectional shape of the hopper chute is adapted to the cross-sectional shape of the second sliding rod; the second pillar has a groove for accommodating the second sliding rod, and the cross-sectional shape of the groove of the second pillar is adapted to the cross-sectional shape of the second sliding rod.

[0054] Preferably, a pulley is provided in the hopper chute, on the second slide bar or on the second pillar; the pulley is a longitudinal wheel or a transverse wheel, and the longitudinal wheel or the transverse wheel can be used alone, or the longitudinal wheel and the transverse wheel can be used in combination; the longitudinal wheels can be arranged relative to each other, symmetrically or staggered up and down, and by arranging the pulley, the stability of the hopper during the up and down movement is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 This is a front view of a concrete mixing device for a pump truck according to an embodiment of the present application;

[0056] Figure 2 This is a rear view of a concrete mixing device for a pump truck according to an embodiment of the present application;

[0057] Figure 3 This is one of the partially enlarged views of a concrete mixing device for a pump truck according to an embodiment of the present application;

[0058] Figure 4 This is a second partially enlarged view of a concrete mixing device for a pump truck according to an embodiment of the present application;

[0059] Figure 5 This is a front view of a concrete mixing device for a pump truck according to another embodiment of the present application;

[0060] Figure 6 This is a rear view of a concrete mixing device for a pump truck according to another embodiment of the present application;

[0061] Figure 7 This is a rear view of a concrete mixing device for a pump truck according to another embodiment of the present application;

[0062] Figure 8 This is a rear view of a concrete mixing device for a pump truck according to another embodiment of the present application;

[0063] Figure 9 This is a front view of a concrete mixing device for a pump truck according to another embodiment of the present application;

[0064] Figure 10This is a front view of a concrete mixing device for a pump truck according to another embodiment of the present application;

[0065] Figure 11 This is a perspective schematic diagram of a concrete mixing device for a pump truck according to another embodiment of the present application;

[0066] Figure 12 This is a rear view of a concrete mixing device for a pump truck according to another embodiment of the present application;

[0067] Figure 13 This is a partial cross-sectional view of a concrete mixing device for a pump truck according to another embodiment of the present application;

[0068] Figure 14 This is a partial cross-sectional view of a concrete mixing device for a pump truck according to another embodiment of the present application;

[0069] Figure 15 This is a rear view of a concrete mixing device for a pump truck according to another embodiment of the present application;

[0070] Figure 16 This is a front view of a concrete mixing device in the prior art;

[0071] Figure 17 It is a rear view of a concrete mixing device in the prior art;

[0072] Figure 18 Schematic diagram of another concrete mixing device in the prior art. DETAILED DESCRIPTION

[0073] In order to further elaborate on the technical means and effects adopted by this application to achieve the predetermined purpose, the specific structure of this application and its effects are described in detail below in conjunction with the accompanying drawings and implementation methods. In the following, the terms "first", "second" |... etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, and cannot be understood as limiting the order of technical features. Therefore, the features defined as "first", "second",... may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0074] like Figures 1 to 4As shown, the present application provides a concrete mixing device for a pump truck, which includes a base 1, a mixing barrel 2, a gantry 3, a hopper 4 and a driving mechanism 5. The base 1, which may also be called a support frame or bracket, is used to install and support other components of the mixing device. The mixing barrel 2 is used to mix and prepare concrete after receiving concrete raw materials. The gantry 3 is arranged on the base 1, and a guide rail is provided on the gantry 3 for supporting and guiding the hopper 4 to move up and down. The hopper 4 is used to transport concrete raw materials to the mixing barrel 2. The hopper 4 is arranged on the gantry 3 through a guide mechanism and can move up and down along the gantry 3. One end of the driving mechanism 5 is connected to the base 1, and the other end is connected to the hopper 4, which is used to provide driving force for the movement of the hopper 4 along the gantry 3. The concrete mixing device of the present application is further explained below with reference to the accompanying drawings.

[0075] The base 1 includes a fixing portion 11 and a supporting portion 12. The fixing portion 11 can be used to install the base on a vehicle-mounted platform, such as a concrete pump truck. Optionally, the fixing portion 11 can also be used to install the base in a fixed place. There are many ways to install the fixing portion 11, such as fixing the base to a mobile platform with bolts and nuts, or fixing the base to a vehicle-mounted platform by welding. It can be understood that other installation methods known in the art can also be used, and this application does not limit this. The supporting portion 12 is used to support the remaining components of the mixing device, and the supporting portion 12 can be a bracket structure composed of rods or beams. The fixing portion 11 and the supporting portion 12 can be set as an integral structure, or as a split structure. In the case of a split structure, the two are fixedly assembled together to form the base 1.

[0076] The mixing drum 2 is disposed on the base 1. Specifically, the mixing drum 2 is fixedly mounted on the support portion 12 of the base 1. The mixing drum 2 includes a drum body 21, a mixing impeller 22, a mixing power source 23, a mixing drum inlet 24, and a mixing drum outlet 25. The mixing impeller 22 is mounted inside the drum body 21 and can rotate about a rotation axis inside the drum body 21. The mixing impeller 22 is connected to the mixing power source 23, which can output power to the mixing impeller 22, thereby driving the mixing impeller 22 to rotate and prepare the raw materials into concrete. The mixing power source 23 can be a motor known in the art, and this application is not limited to this. Alternatively, the mixing impeller 22 can be connected to the mixing power source 23 via a transmission mechanism. The transmission mechanism can be designed according to actual usage requirements to transmit the output power of the mixing power source 23 to the mixing impeller 22 according to design requirements. A mixing drum inlet 24 is provided at the top of the drum body 21 for receiving concrete raw materials delivered by the hopper 4. The barrel body 21 is also provided with a mixing barrel outlet 25, which is connected to a concrete pumping device to deliver the prepared concrete to the pouring location. The location of the mixing barrel outlet 25 can be determined according to actual usage requirements. Optionally, the mixing barrel 2 may also include a barrel cover, which is disposed at the mixing barrel inlet of the barrel body 21. The barrel cover is used to cover the mixing barrel inlet 24 or adjust the opening size of the mixing barrel inlet 24.

[0077] The gantry 3 is arranged on both sides of the mixing barrel 2. The gantry 3 includes at least two parallel pillars 31, and the pillars 31 are fixedly arranged on the base 1. The pillars 31 can be tilted relative to the base 1 to form an inclined slide. The tilt angle of the pillars 31 relative to the vertical direction can be determined according to actual use requirements. For example, the tilt angle can be 30°, 45°, or 60°, and this application does not limit this. In some other examples, the pillars 31 can also be arranged vertically relative to the base 1. For the sake of convenience of description, this application is described based on the technical solution of the tilted setting of the pillars 31. In order to improve the rigidity and stability of the gantry 3, the gantry 3 may include structural reinforcement components. In one example, such as Figure 1 As shown, the gantry 3 may include a support rod 32, one end of the support rod 32 is fixed to the base 1, and the other end of the support rod 32 is fixed to the support column 31, thereby providing a stable support force for the support column 31. The gantry may be installed with or without a crossbeam. In one example, as shown in FIG. Figure 2As shown, the gantry 3 may include a crossbeam 33, which is arranged in the middle of the pillar 31. The crossbeam 33 is fixedly connected to the at least two pillars 31 to improve the rigidity and stability of the gantry 3. The above-mentioned middle part can be the midpoint of the pillar 31, or it can be a position above the midpoint of the pillar 31, or it can be a position below the midpoint of the pillar 31. The above-mentioned upper position and the lower position are not more than 1 / 6 of the total length of the pillar from the midpoint of the pillar. By arranging the crossbeam 33 in the middle of the pillar 31, the interference with the boom of the pump truck when the crossbeam 33 is arranged on the upper part of the pillar 31 can be avoided, thereby ensuring the normal operation of the mixing device. In some other examples, the gantry 3 may include the aforementioned support rods 32 and crossbeam 33 at the same time, thereby further improving the rigidity and stability of the gantry. The inner and outer walls of the pillar 31 are provided with guide rails (also called "slides", not shown in the figure), which are arranged corresponding to the guide mechanism of the hopper 4 and are used to guide the hopper 4 to move up and down along the pillar 31, and then make the hopper 4 move up and down along the gantry 3.

[0078] To guide the hopper 4 into the discharge position and enable automatic opening of the hopper lid for discharge, the support 31 is further provided with a discharge guide trough 34. In some examples, the guide path of the discharge guide trough 34 is a straight line, along which the rollers of the hopper run. In other examples, as shown in the accompanying drawings, the guide path of the discharge guide trough 34 is a curved line, along which the rollers of the hopper run. The function of the guide trough will be further explained below in conjunction with the operation of the hopper.

[0079] The hopper 4 includes a hopper body 41, a hopper guide mechanism 42, a hopper inlet 44, a hopper outlet 45 and a hopper cover 46. The hopper 4 is hingedly connected to the driving mechanism 5, and the position of the hinged connection can be determined according to actual needs, and this application does not impose any restrictions on this.

[0080] The hopper guide mechanism 42 cooperates with the support column 31 of the gantry 3 to guide the hopper 4 to move up and down along the gantry 3. In one example, Figure 3 and 4As shown, the hopper guide mechanism 42 includes at least one first guide wheel 421 and at least one second guide wheel 423 on the side facing the support column 31. A groove is provided in the longitudinal direction of the support column 31. The first guide wheel 421 is located within the groove of the support column 31 and abuts against the inner wall guide rail of the support column 31 from the inside. The inner wall guide rail is located on the inner wall of the groove facing the first guide wheel 421. The second guide wheel 423 is located outside the groove of the support column 31 and abuts against the outer wall guide rail of the support column 31 from the outside. The outer wall guide rail is located on the outer wall of the groove facing the second guide wheel 423. The support column 31 can be made of channel steel, such as a U-shaped channel steel or an I-shaped channel steel. This ensures the mechanical properties of the support column 31 while allowing the guide rails to be manufactured or installed using the groove of the channel steel. In another example, the first guide wheel 421 can be located outside the groove of the support column 31 and abut against the outer wall guide rail of the support column 31 from the outside, while the second guide wheel 423 is located within the groove of the support column 31 and abuts against the inner wall guide rail of the support column 31 from the inside. By arranging the guide wheels inside and outside the pillar 31 respectively, the hopper 4 can be stably supported on the pillar 31, maintaining stability during the up and down movement process. In some other examples, the guide wheel can be a gear and cooperate with the rack guide at the corresponding position of the pillar 31. The use of the gear and rack cooperation method can increase the friction of the guide cooperation and improve the load-bearing capacity of the hopper to transport raw materials. Preferably, the second guide wheel 423 can be arranged at a position above the middle of the hopper body 41, such as Figure 1 、 3 Or as shown in 4, the position above the middle refers to the midpoint of the side of the hopper body 41 parallel to the gantry support 31 and the area above it. It can be understood that due to manufacturing tolerances or installation deviations, the second guide wheel may also be set below the above-mentioned midpoint of the side within a reasonable deviation range, and the present application does not impose any restrictions on this. With such a setting, during the descent of the hopper 3, the lower part of the hopper 3 can further run to the bottom of the support 31, thereby shortening the length of the support 31. This is beneficial for arranging a concrete mixing device on a pump truck, and can avoid the support 31 from extending obliquely to the ground, so as to overcome the need to dismantle the slide close to the ground when the pump truck is not in use in the prior art, which brings inconvenience to the use of the concrete mixing device. Optionally, as Figure 9 As shown, the mixer may further include a slide bar that is fixedly connected to the hopper, extends into a groove of the support 31, and can drive the hopper to move along the support 31. With the help of the slide bar, the hopper can also be moved below the support 31, thereby shortening the length of the support 31 and preventing the support 31 from extending obliquely to the ground.

[0081] A hopper inlet 44 is disposed above the hopper body 41. A hopper outlet 45 is disposed below the hopper body 41. A hopper cover 46 is disposed at the hopper outlet 45. One end of the hopper cover 46 is hingedly connected to the hopper outlet 45 so that the outlet can be opened or closed by rotation. The other end of the hopper cover 46 is connected to a hopper cover roller 461. The hopper cover roller 461 can run along the inner wall guide rail of the groove of the support 31 to guide the rotation of the hopper cover 46, thereby automatically opening and closing the hopper outlet 45.

[0082] The following will be combined Figure 3 and 4 The following further describes the process of the hopper 4 being lifted and lowered along the support 31 of the gantry 3. Figure 3 As shown, the hopper 4 moves upward along the support 31 (i.e., during the lifting process), at this time, the first guide wheel 421 runs against the inner wall guide rail of the support 31, the second guide wheel 423 runs against the outer wall guide rail of the support 31, and the hopper cover roller 461 runs along the inner wall guide rail of the support 31. Because the hopper cover roller 461 is located in the groove of the support 31, the side walls of the groove limit the movement of the hopper cover roller 461 in the directions other than the longitudinal direction of the support 31, thereby preventing the hopper cover 46 from rotating around the hinge axis, thereby allowing the hopper cover 46 to maintain a closed state of the hopper outlet 45. Figure 4As shown, when the hopper 4 moves upward along the support 31 to a position adjacent to the discharge position, the hopper cover roller 461 moves to the discharge channel 34 of the support 31. At this point, the hopper cover roller 461 no longer moves along the longitudinal direction of the support 31, but instead moves along the discharge channel 34 until it stops at the end of the discharge channel 34. Since the hopper 4 is still moving upward along the support 31, the stopped hopper cover roller 461 drives the hopper cover 44 to rotate about the hinge axis (rotation direction is counterclockwise in the figure), thereby gradually opening the hopper outlet 45. When the hopper 4 moves upward to the set highest discharge point, the hopper cover 44 fully opens the hopper outlet 45, completing the discharge. Thereafter, the hopper 4 moves downward along the support 31 (i.e., descends). Since the hopper cover roller 461 remains stopped, it drives the hopper cover 44 to rotate about the hinge axis (rotation direction is clockwise in the figure), thereby gradually closing the hopper outlet 45. When the hopper outlet 45 is completely closed, the hopper lid 44 cannot rotate, thereby driving the hopper roller 461 out of the discharge guide chute 34 and back into the groove of the support 31. It should be noted that in the example described above where the guide trajectory of the discharge guide chute 34 is a curve, the hopper lid rotates at a smaller angle in the early stages of the hopper lid opening process, and at a larger angle in the later stages of the hopper lid opening process. Correspondingly, the hopper lid rotates at a larger angle in the early stages of the hopper lid closing process, and at a smaller angle in the later stages of the hopper lid closing process. Compared to a straight guide trajectory, a curved guide trajectory can make the opening and closing process of the hopper lid smoother and prevent the hopper lid from opening prematurely, causing concrete raw materials to spill outside the mixing drum.

[0083] The drive mechanism 5 includes at least one hydraulic cylinder. This application does not impose any particular restrictions on the type of hydraulic cylinder; it can be a standard hydraulic cylinder, a multi-stage cylinder, or a stacked cylinder. The hydraulic cylinder is located on one side of the gantry 3's support column 31. Optionally, there can be two hydraulic cylinders 51, symmetrically located on either side of the gantry 3's support column 31 and operating synchronously to ensure more balanced and stable hopper movement. The hydraulic cylinder comprises a cylinder body and a piston rod. The cylinder body is controlled by a hydraulic pump station, which drives the piston rod's telescopic movement. The hydraulic pump station can be located on or off the base 1, and this is not a limitation in this application. In one embodiment, one end of the hydraulic cylinder is hingedly connected to the gantry 3's support column 31, or to the base or pump truck frame, and the other end is hingedly connected to the hopper 4. When the hydraulic cylinder 51 extends outward, it drives the hopper 4 downward along the guide rail; when the hydraulic cylinder 51 retracts inward, it drives the hopper 4 upward along the guide rail. In another embodiment, when the agitator includes a slide rod, the slide rod is fixedly connected to the hopper and moves together with the slide rod. The other end of the hydraulic cylinder is connected to the slide rod, and the hydraulic cylinder drives the slide rod and the hopper to move along the support column. In one example, the hydraulic cylinder 51 is positioned above the support column 31. In another example, the hydraulic cylinder 51 can also be positioned below the support column 31, that is, the direction and position of the hydraulic cylinder can be interchanged.

[0084] In another embodiment, if Figure 5As shown, the mixer includes a base 1, a mixing barrel 2, a gantry 3, a hopper 4 and a driving mechanism 5. Among them, the base 1, the mixing barrel 2, the gantry 3 and the hopper 4 are the same as those in the previous embodiment and are not repeated here. The driving mechanism 5 includes a hydraulic cylinder 51, a sliding wheel 52 and a traction member 53. The sliding wheel 52 can be a single fixed pulley, a pulley set or a sprocket, and the traction member can be a pulley rope or a chain. More specifically, the pulley rope can be a wire rope. There is at least one hydraulic cylinder 51, and each hydraulic cylinder corresponds to a traction member. The hydraulic cylinder 51 is arranged on one side of the pillar 31 of the gantry 3. Optionally, there are two hydraulic cylinders 51, and the two hydraulic cylinders 51 are symmetrically arranged on both sides of the pillar 31 of the gantry 3. In one scenario, one end of the hydraulic cylinder 51 is hinged to the pillar 31 or the base or the pump truck frame, and the other end of the hydraulic cylinder 51 is connected to one end of the traction member 53. A sliding wheel 52 is provided on the upper part of the pillar 31, and the other end of the traction member 53 is connected to the hopper 4 after passing through the sliding wheel 52 on the upper part of the pillar 31. The connection position of the traction member and the hopper can be set according to actual needs, and this application does not impose any restrictions on this. When the hydraulic cylinder 51 extends outward, the traction member 53 is driven to pass through the sliding wheel 52 and drive the hopper 4 to move downward along the guide rail; when the hydraulic cylinder 51 retracts inward, the traction member 53 is driven to pass through the sliding wheel 52 and drive the hopper 4 to move upward along the guide rail. The traction member 53 can be a pulley rope or a chain. In another embodiment, a sliding wheel 52 is provided on the upper portion of the support 31 and at one end of the hydraulic cylinder 51. Preferably, the sliding wheel 52 is a pulley block. One end of the hydraulic cylinder 51 is hinged to the support 31, the base, or the pump truck frame. One end of the traction member 53 originates from the sliding wheel at one end of the hydraulic cylinder 51, is wound through the pulley block at the upper portion of the support 31, and is connected to the hopper 4. Driven by the hydraulic cylinder 51, the pulley block and the traction member 52 drive the hopper 4 to rise and fall. In the above embodiment, the process of lifting the hopper 4 along the support 31 of the gantry 3 until it stops is the same as in the previous embodiment and will not be repeated here.

[0085] In other examples, such as Figure 6As shown, the drive mechanism 5 of the concrete mixing device includes two winches 54, a sliding wheel 52, and a traction member 53. Each winch 54 has a drum, and the winches 54 are symmetrically arranged on the pillar 31 of the gantry 3, the base 1, or the pump truck frame. One end of the traction member 53 is wound around the drum of the winch 54, and the other end of the traction member 53 is connected to the hopper 4 after passing through the sliding wheel 52 located on the upper part of the pillar 31. The positions of the sliding wheel 52 and the traction member 53 can be set according to the above example and will not be repeated here. The winch 54 can be a winch existing in the art and is not limited in this application. When the winch 54 winds the traction member 53, the traction member 53 pulls the hopper 4 upward along the guide rail via the sliding wheel 52. When the winch 54 releases the traction member 53, the traction member 53 pulls the hopper 4 downward along the guide rail via the sliding wheel 52.

[0086] In other examples, such as Figure 7 As shown, the concrete mixer drive mechanism 5 includes a hoist 54, a sliding wheel 52, and a traction member 53. The hoist 54 has a drum and is mounted on the support column 31, the base 1, or the pump truck frame. The sliding wheels 52 are mounted on the tops of the two support columns 31 and on the hopper 4. The hopper 4 can have one or two sliding wheels. The traction member 53 passes around the sliding wheels of the hopper 4, driving the hopper up and down. One end of the traction member 53 is wound around the hoist 54. The other end of the traction member 53 first passes around the sliding wheel 52 on one support column 31, the sliding wheel on the hopper 4, and the sliding wheel 52 on the other support column 31, and is then secured to a fixed fixture on the other support column 31, the base, or the pump truck frame. When the hoist 54 winds the traction member 53, the traction member 53 pulls the hopper 4 upward along the guide rail. When the hoist 54 releases the traction member 53, the traction member 53 pulls the hopper 4 downward along the guide rail. In another embodiment, the drive mechanism 5 includes a hoist 54 with two drums. These drums are coaxially or coupled together, located on either side of the two pillars 31, and operate synchronously. Each drum is equipped with a corresponding traction member 53. One end of the traction member 53 is wound around one drum of the hoist 54, and the other end passes over a sliding wheel 52 on the upper portion of the corresponding pillar 31 before being secured to the hopper 4. The traction member on the other side is arranged in the same manner as above. Driven by the hoist 54, the drums and traction members on both sides achieve the lifting and lowering of the hopper.

[0087] There are also some examples, such as Figure 8As shown, the driving mechanism 5 of the concrete mixing device includes a hydraulic cylinder 51, a sliding wheel 52 and a traction member 53. The sliding wheel 52 can be a single fixed pulley, a pulley group or a sprocket, and the traction member can be a pulley rope or a chain. There is only one hydraulic cylinder 51, one end of which is fixedly connected to the top of the pillar 31 on one side of the gantry 3, and the other end of the hydraulic cylinder 51 is provided with a sliding wheel 55. One end of the traction member 53 is fixedly connected to the pillar 31 or the pump truck frame, for example, the fixed connection point can be set at Figure 8 The top of the pillar 31 shown. The other end of the traction member 53 is fixedly connected to the other side pillar 31 or the base or the pump truck frame through the sliding wheel 55 provided on one end of the hydraulic cylinder 51, the sliding wheel 52 provided on the upper part of one side pillar 31 and the sliding wheel provided on the hopper 4. In the above embodiment, the sliding wheel 52 can be a fixed pulley, a sprocket or a pulley group, preferably a pulley group. Through the extension and retraction of the hydraulic cylinder 51, the lifting and lowering movement of the hopper is realized under the action of the traction member 53 and the sliding wheel 52. In another case, the number of hydraulic cylinders 51 is two, one of which is as shown in FIG. Figure 8 As shown by the dashed line, the arrangement of the hydraulic cylinder 51, sliding wheel 52, and traction member 53 on this side is symmetrical with respect to the embodiment described above with a single hydraulic cylinder, and will not be further described here. Furthermore, in this embodiment, one end of the traction member 53 can also be fixed to one end of the hydraulic cylinder or to the sliding wheel at one end of the hydraulic cylinder, while the other end passes around the sliding wheel 52 on the upper portion of the support 31 on the side and is fixed to the hopper 4. In the case of two hydraulic cylinders, the hydraulic cylinder and traction member on the other side can adopt the same symmetrical arrangement.

[0088] The present application provides another concrete mixing device, such as Figure 9 As shown, the mixer includes a base 1, a mixing barrel 2, a gantry 3, a hopper 4 and a driving mechanism 5. The base 1, the mixing barrel 2, the gantry 3 and the driving mechanism 5 are the same as those in the previous embodiment and are not described here. Figure 9In the illustrated embodiment, the hopper 4 includes, in addition to a hopper body 41, a hopper guide mechanism 42, a hopper inlet 44, a hopper outlet 45, and a hopper cover 46, a slide rod 47 fixedly connected to the hopper and capable of moving therewith. The slide rod 47 extends into a groove in the support 31 and drives the hopper along the support 31. This arrangement allows the lower portion of the hopper 3 to move below the support 31 during descent, thereby shortening the length of the support 31 and preventing it from extending diagonally to the ground. This overcomes the drawback of the prior art, which requires the removal of a slideway near the ground when the pump truck is not in use, which can cause inconvenience in the use of the concrete mixing apparatus. Furthermore, it improves the stability of the hopper during raising and lowering. In this embodiment, the drive mechanism can be a hydraulic cylinder, specifically a multi-stage or stacked cylinder. One end of the hydraulic cylinder is hinged to the support, base, or pump truck frame, and the other end is connected to the slide rod. The hydraulic cylinder drives the slide rod, driving the hopper along the support.

[0089] In another embodiment, if Figure 10 As shown, pulleys can be mounted on the slide bar 47 or within the slideway of the support. These pulleys can be longitudinal or transverse, either alone or in combination. These pulleys can be connected to the first guide wheel 421 on the upper portion of the hopper, making the hopper's drive structure more robust. The first guide wheel 421 can also be mounted to the upper end of one side of the slide bar 47. The slide bar can be connected to any position between the upper and lower portions of the hopper. A hydraulic cylinder 51 has one end hingedly connected to the support 31 or base, and the other end connected to the slide bar 47. This drives the slide bar and, consequently, the hopper. The hydraulic cylinder 51 can be a multi-stage or stacked cylinder. The direction and position of the hydraulic cylinders can be interchanged. There can be two hydraulic cylinders, symmetrically located on either side of the support 31, to ensure more balanced and stable hopper movement. The operation of the hydraulic cylinder 51 is the same as in the previous embodiment and will not be further described here.

[0090] This application also provides another concrete mixing device for a pump truck, such as Figures 11 to 13 As shown, the mixing device includes a base 1, a mixing drum 2, a gantry 3, a hopper 4, and a drive mechanism 5. Two hoppers 4 are arranged side by side on the gantry 3, and the two hoppers 4 can move up and down along the gantry 3. The base 1 can be the same as that of the previous embodiment. By providing two independently operating hoppers, continuous loading of the two hoppers can be achieved, allowing the mixer to operate continuously and achieve efficient concrete output. The concrete mixing device of this application is further described below with reference to the accompanying drawings.

[0091] The mixing barrel 2 is arranged on the base 1, and the number and position of the mixing chambers correspond to the hopper 4, that is, the mixing barrel has two independent mixing chambers, which are respectively arranged under the two hoppers 4, and the two mixing chambers each have an independent mixing barrel outlet. The structure of each mixing barrel 2 refers to the above embodiment and will not be repeated here.

[0092] The gantry 3 includes at least two pillars 31 (or "first pillars") arranged in parallel on both sides of the stirring device. The structure and position of the pillars 31 are the same as those in the aforementioned embodiment and will not be repeated here. The gantry 3 also includes at least one second pillar 35. The second pillar 35 is arranged in a middle position parallel to the two pillars 31. In other words, the second pillar 35 is located in the middle position of the stirring device. The second pillar 35 is fixedly arranged on the base 1, and its length is shorter than that of the pillar 31. Therefore, the top of the second pillar 35 is lower than the pillars 31 on both sides, thereby avoiding interference between the top of the second pillar 35 and the boom of the pump truck, thereby ensuring the normal operation of the stirring device.

[0093] When a second support 35 is included, the second support 35 is shared by the hoppers on the left and right sides (e.g. Figure 11-13 When two second pillars 35 are included, they are assembled with the pillars 31 on the left and right sides of the gantry to form the hopper slideway. The second pillars 35 are provided with grooves for accommodating the second slide bar 36; the cross-sectional shape of the grooves in the second pillars 35 is adapted to the cross-sectional shape of the second slide bar 36.

[0094] Each hopper 4 includes a hopper body 41, a hopper guide mechanism 42, a hopper inlet 44, a hopper outlet 45 and a hopper cover 46. A hopper guide mechanism 42 and a hopper chute 48 are provided on both sides of each hopper 4; a second slide bar 36 is provided between the hopper chute 48 and the second pillar 35. One side of the hopper 4 is guided and matched with the corresponding pillar 31 through the corresponding hopper guide mechanism 42, and the other side is slidably matched with the second pillar 35 through the respective hopper chute 48 and the second slide bar 36 matched therewith. The hopper chute 48 is used to accommodate the second slide bar 36. The cross-sectional shape of the hopper chute 48 is adapted to the cross-sectional shape of the second slide bar 36. As shown in the figure, the cross-sectional shape of the hopper chute 48 can be "U"-shaped, semicircular or "V"-shaped ( Figure 13-14 The other side of the second slide bar 36 is embedded in the groove of the second support 35, thereby enabling the hopper 4 to move up and down relative to the second support 35. The cross-sectional shape of the second slide bar 36 matches the cross-sectional shape of the hopper chute 48 and the cross-sectional shape of the second support 35. In the case of two second supports 35, the interplay and principles of the hopper groove, second slide bar, and second support are the same as above.

[0095] The hopper guide mechanism 42 is fixedly arranged on one side adjacent to the pillar 31 and cooperates with the pillar 31 for guidance. For example, for the hopper 4 on the left, the hopper guide mechanism 42 is fixedly arranged on the left side and cooperates with the pillar 31 on the left to guide the hopper 4 to move up and down along the gantry 3. The structure and operation mode of the guiding cooperation between the hopper 4 and the pillar 31 are the same as those in the aforementioned embodiment and will not be described in detail here. In some other examples, the hopper 4 is connected to the first guide wheel 421 through a connecting piece. The first guide wheel 421 corresponds to the upper pulley 421 described above. The first guide wheel 421 is arranged in the outer groove of the "I"-shaped groove of the pillar 31 (based on Figure 12 and 13 In the perspective of the hopper 4, it can roll up and down along the inner wall guide rail. In addition, the hopper 4 is connected to the second guide wheel 423 through a connecting piece. The second guide wheel 423 corresponds to the lower pulley 423 mentioned above. The second guide wheel 423 is set in the "I" shaped inner groove of the pillar 31 (based on Figure 12 and 13 (from a perspective), the hopper can roll up and down along the inner wall guide rails of the groove. Specifically, the first guide wheel 421 and the second guide wheel 423 are disposed in opposite grooves, thereby ensuring stability during the hopper's upward and downward movement. Any type of first guide wheel 421 and second guide wheel 423, as long as they enable relative movement between the hopper and the support 31, is suitable for use in the present invention. Alternatively, the first guide wheel 421 and the second guide wheel 423 may be longitudinal wheels.

[0096] It should be noted that the longitudinal wheel referred to in this application is a wheel whose rolling axis is parallel to the front-to-back direction of the stirring device (based on Figure 13 The perspective is perpendicular to the paper direction); the horizontal wheel is a wheel with a rolling axis parallel to the left and right directions of the stirring device (based on Figure 13 The viewing angle is parallel to the paper direction) of the wheels, and the rolling axis of the transverse wheel is perpendicular to the rolling axis of the longitudinal wheel.

[0097] Alternatively, longitudinal wheels can also be symmetrically arranged at the upper and lower ends of the hopper 4. In addition, more longitudinal wheels can also be arranged according to actual needs. By arranging longitudinal wheels, the stability of the hopper in the up and down movement process can be further improved.

[0098] like Figure 12As shown, the driving mechanism 5 includes a hydraulic cylinder 51 (not shown in the drawings), a sliding wheel 52, a traction member 53 and a fixing member 57. The sliding wheel 52 can be a single fixed pulley, a pulley set or a sprocket, and the traction member can be a pulley rope or a chain. Among them, the structure and position of the hydraulic cylinder 51 and the fixing method of one end of the traction member 53 are the same as those in the aforementioned embodiment and will not be repeated here. The other end of the traction member 53 passes around the sliding wheel 52 and the hopper sliding wheel on the upper part of the side support 31, and is fixed on the fixing member 57. The fixing member 57 can be a pump truck frame or a bracket connected to the base. In order to avoid interference with the pump truck arm, the position of the fixing member 57 should be staggered with the position of the arm.

[0099] In another example, a winch may be used instead of the hydraulic cylinder. The configuration of the winch is the same as that in the above embodiment and will not be described again here.

[0100] In other examples, such as Figure 15 As shown, the hopper 4 may not be provided with a hopper sliding wheel. After the other end of the traction member 53 passes around the sliding wheel 52 on the upper part of one side pillar 31, it is directly fixedly connected to the hopper 4, thereby pulling the hopper to move up and down along the pillar 31 and the second pillar 35.

[0101] Optionally, pulleys can be set on the hopper chute 48, the second slide bar 36 or the second pillar 35. The pulleys can be longitudinal wheels or transverse wheels. The longitudinal wheels can be used alone, the transverse wheels can be used alone, or the longitudinal wheels and transverse wheels can be used in combination; the longitudinal wheels can be set relative to each other, symmetrically, or staggered up and down. By setting the pulleys, the stability of the hopper during the up and down movement can be further improved.

[0102] It should be noted that the location of the hydraulic cylinder on the gantry or hopper in the embodiments of the present application can be set according to actual needs and is not limited by this application. In other words, the connection end points of the hydraulic cylinder are not restricted to a specific location, nor are the shape of the hydraulic cylinder or the mounting method of either end of the hydraulic cylinder.

[0103] The sliding wheel can be a single fixed pulley, a pulley assembly, or a sprocket, and the traction member can be a pulley rope engaged with the pulley or a chain engaged with the sprocket, which will not be described in detail here. Longitudinal wheels or transverse wheels can also be installed on the aforementioned hopper groove, slide bar, second slide bar, support, and second support to reduce friction.

[0104] The concrete mixing device for a pump truck proposed in the present application abandons the structural design commonly used in the prior art of setting a crossbeam on the top of the gantry and a lifting hopper pulley. Through the overall improvement of the gantry, drive mechanism, hopper and their mutual coordination, at least two parallel pillars are used to form a slideway, eliminating the crossbeam on the top of the gantry or setting the crossbeam in the middle of the pillars. As a result, the boom of the pump truck can fall into the slideway, thereby minimizing the height of the entire vehicle, avoiding interference between the gantry and the boom of the pump truck, and ensuring the normal operation of the mixing device. By improving the coordination between the hopper and the gantry, the length of the pillars is shortened, preventing the pillars from extending to the ground, and overcoming the disadvantage of needing to remove the slideway close to the ground when the pump truck is in driving state. By improving the corresponding structures of the drive mechanism and the hopper, the overall structure of the mixing device is simplified, the stability and safety of the hopper lifting are improved, and the use process is more convenient. By improving the mixing chamber of the hopper, the mixer can continuously mix concrete, thereby improving the working efficiency of the mixing device and reducing energy consumption and labor costs. The mixing device provided in the present application has broad market application prospects.

[0105] The above shows and describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. Such changes and improvements are intended to fall within the scope of the present application. The scope of protection claimed in this application is defined by the appended claims and their equivalents.

Claims

1. A concrete mixing device for a pump truck, characterized in that: It includes a base, a mixing barrel, a gantry, a hopper and a driving mechanism, among which, The base supports the mixing barrel, gantry, hopper and driving mechanism; The gantry comprises at least two parallel pillars, which form a slideway for the hopper and are arranged on both sides of the mixing barrel; The hopper includes a hopper guide mechanism, the hopper guide mechanism cooperates with the support guide to guide the hopper to move along the support; the drive mechanism provides power for the movement of the hopper; The hopper cover is hinged at the outlet of the hopper, and the hopper cover is connected to the hopper cover roller. The gantry is provided with a discharge guide groove adapted to the hopper cover roller; The guide track of the discharge guide trough is a curve; The hopper guide mechanism includes at least one first guide wheel and at least one second guide wheel, the first guide wheel and the second guide wheel move relative to each other along the support to guide the movement of the hopper; the first guide wheel and the second guide wheel are arranged above the middle of the hopper body; The support posts do not extend to the ground; The hopper also includes a slide rod, which can be fixedly connected to the hopper and move together. The slide rod extends into the groove of the pillar and drives the hopper to move along the pillar. With the help of the slide rod, the lower part of the hopper can move below the pillar.

2. The stirring device according to claim 1, characterized in that It also includes a sliding rod, which extends into the groove of the pillar. The sliding rod is fixedly connected to the hopper and moves together with the hopper. The driving mechanism includes a hydraulic cylinder, one end of the hydraulic cylinder is hinged to the pillar or base or pump truck frame, and the other end is connected to the sliding rod. The sliding rod is driven by the hydraulic cylinder to drive the hopper to move together.

3. The stirring device according to claim 2, characterized in that A pulley can be installed in the slideway of the slide rod or the pillar. The pulley is a longitudinal wheel or a transverse wheel. The longitudinal wheel or the transverse wheel can be used alone or the longitudinal wheel and the transverse wheel can be used in combination. The hydraulic cylinder includes a multi-stage cylinder or a superimposed cylinder.

4. The stirring device according to claim 1, characterized in that The driving mechanism includes at least one hydraulic cylinder or at least one winch; the hydraulic cylinder is selected from a common hydraulic cylinder, a multi-stage cylinder or a superimposed cylinder.

5. The stirring device according to claim 1, characterized in that The cross section of the pillar is in an I-shape and includes two opposite grooves, and the first guide wheel and the second guide wheel are arranged in the two grooves opposite to each other.

6. The stirring device according to claim 4, characterized in that The driving mechanism includes at least one hydraulic cylinder, one end of which is hinged to the support or the base or the pump truck frame, and the other end of which is hinged to the hopper.

7. The stirring device according to claim 4, characterized in that The driving mechanism includes at least one hydraulic cylinder, a sliding wheel and a traction member; One end of the hydraulic cylinder is hinged to the base or the support or the pump truck frame; One end of the traction member starts from the other end of the hydraulic cylinder or the sliding wheel provided on the other end of the hydraulic cylinder; the other end of the traction member passes through the sliding wheel on the upper part of one side pillar and the sliding wheel on the hopper and is fixed to the other side pillar or the base or the pump truck frame; The sliding wheel is a single fixed pulley or a pulley group, and the traction member is a pulley rope or a chain.

8. The stirring device according to claim 4, characterized in that The driving mechanism includes at least one hydraulic cylinder, a sliding wheel and a traction member; One end of the hydraulic cylinder is hinged to the base or the support or the pump truck frame; One end of the traction member starts from the pillar or the pump truck frame, and the other end of the traction member passes through the sliding wheel provided at the other end of the hydraulic cylinder, the sliding wheel on the upper part of one pillar, and the sliding wheel on the hopper, and is then fixed to the other side pillar or the base or the pump truck frame; The sliding wheel is a single fixed pulley or a pulley group, and the traction member is a pulley rope or a chain.

9. The stirring device according to claim 4, characterized in that The driving mechanism includes two hydraulic cylinders, a sliding wheel and a traction member; The two hydraulic cylinders are respectively arranged on both sides of the pillar, and one end of the hydraulic cylinder is arranged on the pillar or the base or the pump truck frame; each hydraulic cylinder is equipped with a corresponding traction member, one end of which starts from the pillar or the pump truck frame, and the other end of the traction member passes through the sliding wheel on the other end of the hydraulic cylinder and the sliding wheel on the upper part of one pillar and is fixed to the hopper. The two hydraulic cylinders are arranged in the same manner; The sliding wheel is a single fixed pulley or a pulley group, and the traction member is a pulley rope or a chain.

10. The stirring device according to claim 4, characterized in that The driving mechanism includes two hydraulic cylinders, a sliding wheel and a traction member; The two hydraulic cylinders are respectively arranged on both sides of the pillar, and one end of the hydraulic cylinder is arranged on the pillar or the base or the pump truck frame; each hydraulic cylinder is equipped with a corresponding traction member, one end of the traction member starts from the other end of the hydraulic cylinder or the sliding wheel arranged on the other end of the hydraulic cylinder, and the other end of the traction member passes through the sliding wheel on the upper part of one side of the pillar and is fixed to the hopper. The two hydraulic cylinders are arranged in the same way; The sliding wheel is a single fixed pulley or a pulley group, and the traction member is a pulley rope or a chain.

11. The stirring device according to claim 4, characterized in that The driving mechanism includes a winch, a sliding wheel and a traction member; The hoist is arranged on a support or a base; When one winch is provided, the winch has one drum or two drums. When the winch has one drum, one end of the traction member is wound on the drum of the winch, and the other end of the traction member is fixed to the pillar or base or pump truck frame on the other side after passing through the sliding wheel on the upper part of the pillar and the sliding wheel on the hopper; when the winch has two drums, the two drums are coaxially or connected, and the two drums are respectively provided on both sides of the two pillars and operate synchronously, each drum is equipped with a corresponding traction member, one end of the traction member is wound on one drum, and the other end is fixed to the hopper after passing through the sliding wheel on the upper part of the pillar on the same side, and the drums on both sides are arranged in the same way; When two winches are provided, the two winches are respectively provided on both sides of the two pillars. Each winch has a drum and a corresponding traction member. One end of the traction member is wound on the drum of the winch, and the other end of the traction member is passed around the sliding wheel on the upper part of the pillar and fixed on the hopper. The arrangement of the winches on both sides is the same. The sliding wheel is a pulley; and the traction member is a pulley rope or a chain.

12. The stirring device according to claim 1, characterized in that The gantry further comprises at least one second support column, the second support column being arranged in a middle position parallel to the support column, and the second support column being shorter than the length of the support column; There are two hoppers, and a hopper guide mechanism and a hopper chute are respectively provided on both sides of the hopper; One side of each hopper is guided and matched with the corresponding pillar through the hopper guide mechanism, and the other side of each hopper is slidably matched with the second pillar through its own hopper chute and the second sliding rod matched therewith.

13. The stirring device according to claim 12, characterized in that The mixing barrel has two independent mixing chambers, each of which has an independent mixing barrel outlet, and the two mixing chambers are correspondingly configured with the two hoppers.

14. The stirring device according to claim 12, characterized in that The second pillar is one or two; When there is one second pillar, the second pillar is shared by two hoppers, and each hopper slides with the second pillar through its own hopper chute and the second sliding rod cooperating therewith; the hopper chute is used to accommodate the second sliding rod, and the cross-sectional shape of the hopper chute is adapted to the cross-sectional shape of the second sliding rod; the second pillar has two grooves on both sides for accommodating the second sliding rod, and the cross-sectional shape of the groove of the second pillar is adapted to the cross-sectional shape of the second sliding rod; when there are two second pillars, the two second pillars respectively cooperate with the pillars on both sides of the gantry to form a slideway for the hopper, and each hopper slides with the corresponding second pillar through its own hopper chute and the second sliding rod cooperating therewith; the hopper chute is used to accommodate the second sliding rod, and the cross-sectional shape of the hopper chute is adapted to the cross-sectional shape of the second sliding rod; the second pillar has a groove for accommodating the second sliding rod, and the cross-sectional shape of the groove of the second pillar is adapted to the cross-sectional shape of the second sliding rod.

15. The stirring device according to any one of claims 12 to 14, characterized in that: A pulley is provided in the hopper chute, on the second slide bar or on the second pillar; the pulley is a longitudinal wheel or a transverse wheel, and the longitudinal wheel or the transverse wheel can be used alone, or the longitudinal wheel and the transverse wheel can be used in combination; the longitudinal wheels can be arranged relative to each other, symmetrically or staggered up and down. By arranging the pulley, the stability of the hopper during the up and down movement is further improved.

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