Ultra-low clearance concrete conveying combined device

Abstract

The utility model discloses an ultra-low clearance concrete conveying combination device which comprises a gantry crane, a movable chute, a concrete pump truck, a tumbling barrel combination and a hose, the gantry crane is movably erected above a to-be-poured concrete area, and the movable chute is obliquely arranged at a discharging port in one side of the lower portion of the concrete pump truck. One end of the movable chute is connected with the gantry crane, the other end of the movable chute is detachably connected with the tumbling barrel combination, the tumbling barrel combination is hoisted through the gantry crane, and the end, away from the movable chute in the length direction, of the tumbling barrel combination extends into a formwork of the area where the concrete is to be poured through a hose. The concrete conveying requirement of the narrow and long underground side wall structure is met, the problem of concrete pouring with the large height difference is solved, the problem that concrete in a limited space is difficult to pour is perfectly solved, maneuverability, flexibility and pouring speed are greatly improved, and certain popularization value is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a concrete conveying combined device with ultra-low clearance. Background Art

[0002] During the construction stage of the main structure with ultra-low clearance under high-voltage lines, the construction of the main structure includes the backfilling of structures such as the floor slab, side wall, and middle partition wall. In the working condition of low clearance, the construction processes such as material hoisting, turnover, and concrete pouring in the conventional backfilling stage cannot be carried out. The influence range of the high-voltage line reaches a maximum longitudinal influence length of 100m along the foundation pit, with the lowest suspension height from the ground of 11.19m and the lowest clearance of 5.19m, which is the most difficult working condition in similar projects. A lowering pit of 3.3m is excavated and slope excavation is adopted, and the retaining and reinforcement of the lowering pit adopts forms such as slope reinforcement, water-stop reinforcement, diaphragm wall reinforcement, and RJP reinforcement. The effectively available height is 8.5m, which poses great challenges to the concrete pouring of the structure. Obviously, the conventional mechanical equipment such as concrete pumps and truck cranes cannot be used. The erection height of the concrete pump is too high and does not meet the conditions for on-site safe operation. The rental cost of the ground pump is too high, and the erection of the pump pipe is too difficult and complex for the pouring of the foundation pit side wall, which is also not conducive to on-site construction and cost savings. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a concrete conveying combined device with ultra-low clearance, which solves the problem that the construction processes such as material hoisting, turnover, and concrete pouring in the backfilling stage cannot be carried out under the working condition of low clearance.

[0004] To achieve the above technical effects, the utility model provides a concrete conveying combined device with ultra-low clearance, which includes:

[0005] A gantry crane, a movable chute, a concrete pump truck, a string tube combination, and a hose. The gantry crane is movably erected above the area where concrete is to be poured. The movable chute is inclined at the discharge port on one side of the lower part of the concrete pump truck, and the other end is detachably connected to the string tube combination. The string tube combination is lifted by the gantry crane and extends into the formwork of the area where concrete is to be poured through a hose at the end far from the movable chute along the length direction.

[0006] Preferably, the string tube combination includes a plurality of string tube bodies that are detachably connected to each other at the head and tail. Adjacent string tube bodies are mutually clamped by a first buckle, and each string tube body is a tapered shape with a wider upper part and a narrower lower part.

[0007] Preferably, a second buckle for fixing the connection between the string tube combination and the hose is installed at the connection end of the string tube combination and the hose.

[0008] Preferably, the movable chute includes a main chute section connected to the discharge port on one side of the lower part of the concrete pump truck, and a spiral vertical section obliquely arranged and connected to the bottom of the discharge port of the main chute section, and the spiral vertical section is communicated with the main chute section.

[0009] Preferably, a chute support for supporting the movable chute is arranged at the bottom of the gantry crane, and a spherical movable chute joint is installed at the bottom of the main chute section.

[0010] Preferably, a counterweight movable base is connected to the spherical movable chute joint, and the counterweight movable base is installed at the bottom of the gantry crane.

[0011] Preferably, the concrete pump truck is located above the ground, the area to be poured is located on the middle plate surface of the foundation pit, a landing pit is arranged between the top plate surface of the foundation pit and the ground, and the gantry crane is erected at the bottom of the landing pit.

[0012] Due to the adoption of the above technical solution, the technical effects obtained by the present utility model are as follows:

[0013] 1) By adopting a movable chute, the problem of concrete pouring with a large height difference is solved through the main chute section and the spherical chute joint.

[0014] 2) Through the spiral vertical section, the problem of concrete segregation caused by the free fall of concrete during pouring is solved, the problem of difficult concrete pouring in a limited space is perfectly solved, and the mobility, flexibility and pouring speed are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model.

[0017] Figure 2 It is a schematic side view of the partial 2 structure of an embodiment of the present utility model.

[0018] The corresponding relationship of the reference numerals in the drawings is as follows:

[0019] 1 - Gantry crane; 101 - Gantry crane hook; 2 - String tube combination; 3 - Hose; 4 - Concrete pump truck; 5 - Movable chute; 6 - Area of concrete to be poured; 7 - Landing pit; 8 - Ground; 9 - Top plate surface; 10 - Middle plate surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figure 1 and Figure 2 As shown, the embodiments of the present utility model provide an ultra-low headroom concrete conveying combination device, including a gantry crane 1, a movable chute 5, a concrete pump truck 4, a string tube combination 2 and a hose 3. The gantry crane 1 is movably erected above the area 6 where concrete is to be poured. The movable chute 5 is inclined and arranged at the discharge port on one side of the lower part of the concrete pump truck 4, and the other end is detachably connected to the string tube combination 2. The string tube combination 2 is hoisted by the gantry crane hook 101 of the gantry crane 1, and the end far away from the movable chute 5 along the length direction extends into the formwork in the area where concrete is to be poured through the hose 3. It should be noted that in this embodiment, taking the side wall area as an example, the area where concrete is to be poured is located on the middle plate surface 10 of the foundation pit. There is a landing pit 7 between the top plate surface 9 of the foundation pit and the ground 8, and the gantry crane 1 is erected at the bottom of the landing pit 7.

[0022] Furthermore, the string tube assembly 2 includes a plurality of string tube bodies detachably connected end to end. Adjacent string tube bodies are clamped to each other by first buckles, and each string tube body is a tapered shape with a wider upper part and a narrower lower part. There should be sufficient space at the lower opening of the last string tube body to connect the hose 3. And a second buckle for fixing the connection between the last string tube body and the hose 3 is installed at the connection end of the string tube assembly 2 and the hose 3. By setting the second buckle, it is convenient to replace the hose 2 according to different working conditions. The length of each string tube body should be 0.8 m - 1.2 m, which is convenient to adjust the length of the string tube assembly in time as the pouring depth changes. In this embodiment, the hose 3 extends into the formwork to convey the concrete within a range of 1 m from the pouring surface, effectively reducing the free fall height, preventing the self-discharged concrete from segregation, and improving the quality of structural pouring. The setting of the string tube assembly 2 allows the concrete to be vertically transported by its own weight without segregation. The detachable clamping of multiple string tube bodies realizes the free adjustment of the length of the string tube assembly and ensures that it will not unhook under the action of gravity, thus meeting the requirements of layered pouring of the structure. It should be noted that during the process of self-discharged concrete pouring, the discharging speed should be appropriate to prevent the concrete from overflowing from the upper opening due to over-fast discharging and filling the string tube assembly sections. During the pouring process, sufficient labor should be equipped to vibrate the concrete entering the formwork in time. The vibration of the concrete should comply with relevant codes and regulations. The pouring of the side wall concrete must be carried out in strict accordance with the plan in layers. As the pouring depth increases, the number of string tube bodies of the string tube assembly should be adjusted. First, remove the last two string tube bodies and separate them, and then connect the last section of the connecting hose 3 to the remaining string tube bodies. It is strictly prohibited to disassemble and assemble the string tube assembly during the process of concrete discharging, and it is also strictly prohibited to disassemble and assemble the string tube assembly during the hoisting process of the string tube assembly.

[0023] Furthermore, the movable chute 5 includes a main chute section connected to the discharge port on one side of the lower part of the concrete pump truck 4 and a spiral vertical section obliquely arranged and connected to the bottom of the discharge port of the main chute section, and the spiral vertical section is communicated with the main chute section. Preferably, a chute support for supporting the movable chute 5 is arranged at the bottom of the gantry crane 1, and the chute support should be checked for stress. A spherical movable chute joint is installed at the bottom of the main chute section, and a counterweight movable base is connected to the spherical movable chute joint, and the counterweight movable base is installed at the bottom of the gantry crane 1. In this embodiment, the string tube assembly 2 and the hose 3 are lifted by the gantry crane 1, and the pouring position is quickly switched along with the pouring process to achieve layered, segmented, and uniform pouring.

[0024] By adopting the ultra-low headroom concrete conveying combined device of the present utility model, in combination with a chute and a gantry crane that can be utilized on site, through the pouring method of gantry crane + movable chute + string tube + hose, the concrete conveying requirements of narrow and long underground side wall structures are met, the problem of concrete pouring with a large height difference is solved, the problem that it is difficult to pour concrete in a limited space is perfectly solved, and the mobility, flexibility and pouring speed are greatly improved, having certain popularization value.

[0025] Parts not involved in the present utility model are the same as or can be implemented by using the prior art. Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An ultra-low clearance concrete conveying assembly device, characterized in that: The utility model comprises a gantry crane, a movable chute, a concrete pump truck, a barrel combination and a hose. The gantry crane is movably erected above the area to be poured concrete. The movable chute is obliquely arranged at the discharge port on one side of the lower part of the concrete pump truck, and the other end is detachably connected with the barrel combination. The barrel combination is lifted by the gantry crane and one end away from the movable chute in the length direction extends into the formwork of the area to be poured concrete through a hose. The movable chute comprises a main chute section connected to the discharge port on one side of the lower part of the concrete pump truck, and a spiral vertical section obliquely arranged and connected to the bottom of the discharge port of the main chute section, and the spiral vertical section is communicated with the main chute section.

2. The ultra-low clearance concrete delivery assembly device according to claim 1, characterized in that: The string tube assembly includes a plurality of string tube bodies which are detachably connected to each other end to end, and adjacent string tube bodies are clamped to each other via a first buckle, and each of the string tube bodies is in a cone shape which is wide at the top and narrow at the bottom.

3. The ultra-low clearance concrete delivery assembly device according to claim 1, characterized in that: The connecting end of the string-tube assembly and the hose is provided with a second buckle for fixing the string-tube assembly and the hose after being connected.

4. The ultra-low clearance concrete delivery assembly device according to claim 1, characterized in that: A chute bracket for supporting the movable chute is set up at the bottom of the gantry crane, and a spherical movable chute joint is installed at the bottom of the main chute section.

5. The ultra-low clearance concrete delivery assembly device according to claim 4, characterized in that: A counterweight type movable base is connected to the spherical movable chute joint, and the counterweight type movable base is installed at the bottom of the gantry crane.

6. The ultra-low clearance concrete delivery assembly device according to claim 1, characterized in that: The concrete pump truck is located above the ground, the area to be poured concrete is located on the middle plate surface of the foundation pit, a ground pit is provided between the top plate surface of the foundation pit and the ground, and the gantry crane is arranged at the bottom of the ground pit.

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