Reduction gear for conveying concrete and pouring system
By installing a speed reduction device in the concrete conveying pipeline and using the speed reduction pier and guide inclined surface technology, the problem of excessively fast concrete conveying speed is solved, and the effect of simplification of structure, safety improvement and equipment life extension is achieved.
Patent Information
- Application Number
- CN202421404454.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-19
AI Technical Summary
In vertical shaft and underground engineering construction, when concrete is transported through pipelines, due to the huge height difference, the exit speed is likely to be too fast, resulting in complex structure, easy blockage, rapid buffer damage, difficulty in repair, and even safety accidents may occur.
A concrete reduction device with a simple structure is designed, including a feed pipe, a discharge pipe and a reduction pier. The concrete energy is absorbed through the reduction pier, and the concrete flow direction is changed by using the reduction guide inclined surface to achieve speed reduction.
It effectively reduces the concrete exit speed, simplifies the casting system structure, eliminates pipe blockage accidents, improves construction safety, and extends the service life of the equipment.
Smart Images
Figure CN222666807U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of concrete speed reducers, in particular to a speed reducer for conveying concrete and a pouring system. Background Art
[0002] The depth of mineral resource mining is gradually increasing, and the proportion of shaft development in underground mine construction is gradually increasing. In order to ensure the safety of shaft and underground mining engineering construction, concrete support is an important safeguard measure. There is a huge demand for concrete in shaft and underground engineering construction. Using pipelines to transport concrete underground is an efficient construction process. When using pipelines to transport concrete downward, due to the huge height difference, the outlet speed will be fast. Generally, multi-stage buffers are installed in the middle of the concrete delivery pipeline to reduce the concrete speed. However, it also brings about problems such as complex structure of the concrete delivery pipeline system, easy blockage, fast buffer damage, and difficult maintenance. If improper measures are taken, it may also cause safety accidents. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a concrete deceleration and buffer structure with a simple structure.
[0004] The utility model provides a technical solution to the above technical problems as follows: a deceleration device for conveying concrete, the deceleration device comprising a feed pipe, a discharge pipe and a deceleration pier, the upper portion of one side of the discharge pipe is fixedly connected to the lower portion of one side of the feed pipe and are internally connected to form a deceleration bin, the upper end of the feed pipe has a feed port, the lower end of the discharge pipe has a discharge port, the deceleration pier is installed at the lower portion of the feed pipe, and the upper end of the deceleration pier has a deceleration guide slope inclined toward the discharge pipe.
[0005] The beneficial effects of the utility model are as follows: concrete falls from the upper feed port into the deceleration bin and impacts the deceleration pier, which absorbs part of the concrete's energy. After the concrete collides with the deceleration guide slope, the concrete changes its flow direction and flows out through the lower discharge port, and the concrete outlet speed is reduced to a controllable range. During the construction of a kilometer-deep shaft, a deceleration device is connected to the bottom of the ash chute to meet the deceleration buffer requirements of the kilometer-deep shaft, effectively reducing the concrete outlet speed while simplifying the pouring system structure containing the ash chute, and preventing pipe blockage accidents.
[0006] On the basis of the above technical solution, the present invention can also be improved as follows.
[0007] Furthermore, the deceleration device also includes a buffer spring, and the buffer spring is fixedly connected to the bottom surface of the deceleration pier.
[0008] The beneficial effect of adopting the above further solution is that when concrete flows downward and collides with the deceleration guide slope, the buffer spring is compressed, and the energy is absorbed by the buffer spring under the deceleration pier, thereby reducing pipeline vibration.
[0009] Furthermore, the buffer spring is a butterfly spring.
[0010] Furthermore, the angle a between the deceleration guide slope and the vertical direction is 35°-45°.
[0011] The beneficial effect of adopting the above further solution is that the angle a can ensure that the concrete flows smoothly along the deceleration guide slope to the discharge pipe.
[0012] Furthermore, the top of the discharge pipe is provided with an inspection window.
[0013] The beneficial effect of adopting the above further solution is that an inspection window is provided on the upper part of the deceleration bin to confirm that the interior of the deceleration bin is unobstructed and free of attached concrete before each unloading.
[0014] Furthermore, one end of the inspection window is hinged to the discharge pipe, and the other end thereof is detachably connected to the discharge pipe.
[0015] The beneficial effect of adopting the above further solution is that the inspection window can be rotated and opened, which is convenient for observing the situation in the reduction chamber or clearing the blockage in the reduction chamber.
[0016] Furthermore, the deceleration device also includes a reinforcing steel plate, which is fixedly connected to the outer walls of the feed pipe and the discharge pipe.
[0017] The beneficial effect of adopting the above further solution is that the outer walls of the feed pipe and the discharge pipe are fixed by reinforcing the steel plate, thereby increasing the structural strength of the reduction device and increasing the service life of the reduction device.
[0018] Furthermore, the deceleration device also includes a lifting lug, and the lifting lug is fixedly connected to the reinforcing steel plate.
[0019] The beneficial effect of adopting the above further solution is that a lifting lug is welded on the outside of the reduction chamber, which makes it easy to use a wire rope to fix the reduction device to the anchor rod of the well wall, thereby ensuring construction safety.
[0020] Furthermore, a height difference between the top surface of the discharge pipe and the deceleration guide inclined surface is L, an inner diameter of the feed pipe is D, and L≥2D.
[0021] The beneficial effect of adopting the above further scheme is that the height difference L is the net height of the deceleration area of the feed pipe. The value of the height difference L can ensure that the deceleration pier effectively decelerates the concrete, and combined with the structure of the deceleration guide slope, the concrete can flow smoothly along the direction of the deceleration guide slope, reducing the amount of rebound after the concrete collides with the deceleration guide slope.
[0022] The utility model also provides a pouring system, which comprises a speed reducing device for conveying concrete.
[0023] The beneficial effects of the utility model are:
[0024] 1) During the construction of a kilometer-deep vertical shaft, a deceleration device is connected to the bottom of the concrete conveying pipeline (ash chute), which simplifies the structure of the concrete vertical conveying pipeline system and enables the vertical concrete conveying distance of the shaft to reach 1,200 meters at a time.
[0025] 2) The deceleration device effectively reduces the concrete speed at the outlet of the ash chute, reduces the pipeline vibration caused by the impact of the vertical drop of concrete, eliminates pipe blockage accidents, and ensures construction safety.
[0026] 3) The deceleration device has a simple structure, which is convenient for on-site material collection and processing. The deceleration mechanism is reasonably designed. After passing through a large volume of concrete, the degree of wear is low, the service life is long, and maintenance is convenient.
[0027] 4) The pouring system uses ash chute and deceleration device to transport concrete, so that the shaft wall pouring can be carried out continuously, which improves the quality of concrete shaft wall construction, shortens the support operation time, releases the shaft lifting capacity when pouring concrete, effectively reduces the energy consumption of mine construction, and has significant economic and environmental benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 This is a front sectional view of the deceleration device for conveying concrete according to the utility model;
[0029] Figure 2 It is a left view of the deceleration device for conveying concrete according to the utility model;
[0030] Figure 3 It is a top view of the speed reducer for conveying concrete according to the utility model.
[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0032] 500, deceleration device; 501, feed inlet; 502, discharge outlet; 503, deceleration bin; 504, deceleration pier; 505, buffer spring; 506, discharge pipe flange; 507, quick connector; 508, inspection window pin; 509, inspection window; 510, inspection window fixing bolt; 511, lifting ear; 512, reinforcement steel plate. DETAILED DESCRIPTION
[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0034] like Figure 1-Figure 3As shown, this embodiment provides a deceleration device for conveying concrete, the deceleration device 500 includes a feed pipe, a discharge pipe and a deceleration pier 504, the upper part of one side of the discharge pipe is fixedly connected to the lower part of one side of the feed pipe and are internally connected to form a deceleration bin 503, the upper end of the feed pipe has a feed port 501, the lower end of the discharge pipe has a discharge port 502, the deceleration pier 504 is installed in the lower part of the feed pipe, and the upper end of the deceleration pier 504 has a deceleration guide slope inclined toward the discharge pipe.
[0035] Concrete falls from the upper feed port 501 into the deceleration bin 503 and impacts the deceleration pier 504. The deceleration pier 504 absorbs part of the concrete's energy. After the concrete collides with the deceleration guide slope, the concrete changes its flow direction and flows out through the lower discharge port 502. The concrete outlet speed is reduced to a controllable range. During the construction of a kilometer-deep shaft, a deceleration device is connected to the bottom of the ash chute to meet the deceleration buffer requirements of the kilometer-deep shaft. While effectively reducing the concrete outlet speed, it simplifies the structure of the casting system containing the ash chute and eliminates pipe blockage accidents.
[0036] Optionally, the speed reducer 504 is fixed in the feed pipe, or placed in the feed pipe but not connected to the feed pipe.
[0037] Specifically, Figure 1 As shown, the height of the deceleration guide slope gradually decreases from the side away from the discharge pipe to the side close to the discharge pipe.
[0038] On the basis of any of the above solutions, the deceleration device 500 further includes a buffer spring 505 , and the buffer spring 505 is fixedly connected to the bottom surface of the deceleration pier 504 .
[0039] When the concrete flows downward and collides with the deceleration guide slope, the buffer spring 505 is compressed, and the energy is absorbed by the buffer spring 505 below the deceleration pier 504, thereby reducing the vibration of the pipeline.
[0040] Based on any of the above solutions, the buffer spring 505 is a butterfly spring.
[0041] Based on any of the above solutions, the angle a between the deceleration guide slope and the vertical direction is 35°-45°.
[0042] The angle a can ensure that the concrete flows smoothly along the deceleration guide slope to the discharge pipe.
[0043] Based on any of the above solutions, an inspection window 509 is provided on the top of the discharge pipe.
[0044] An inspection window 509 is provided on the upper part of the deceleration bin 503 for confirming that the interior of the deceleration bin 503 is unobstructed and free of attached concrete before each unloading.
[0045] Optionally, the inspection window 509 is made of a transparent material, or the inspection window 509 is movable or rotatable, and opens or closes the top surface of the discharge pipe.
[0046] Based on any of the above solutions, one end of the inspection window 509 is hinged to the discharge pipe, and the other end thereof is detachably connected to the discharge pipe.
[0047] The inspection window 509 can be rotated and opened to facilitate observation of the situation in the deceleration chamber 503 or cleaning of blockages in the deceleration chamber 503 .
[0048] Specifically, Figure 1 As shown, a vertically arranged inspection window pin 508 is fixed on the inspection window 509, and the inspection window pin 508 is hinged to the discharge pipe. The inspection window fixing bolt 510 passes through the other end of the inspection window 509 and the flange on the upper end of the discharge pipe, and is threadedly connected to the fixing nut, thereby realizing a detachable connection between the inspection window 509 and the discharge pipe.
[0049] On the basis of any of the above solutions, the deceleration device 500 further includes a reinforcing steel plate 512, and the reinforcing steel plate 512 is fixedly connected to the outer walls of the feed pipe and the discharge pipe.
[0050] The outer walls of the feed pipe and the discharge pipe are fixed by the reinforcing steel plate 512 , thereby increasing the structural strength of the reduction device 500 and increasing the service life of the reduction device 500 .
[0051] Specifically, there are two reinforcing steel plates 512, which are respectively arranged on both sides of the feed pipe, or the reinforcing steel plates 512 are made into an annular structure and are sleeved on the outer sides of the feed pipe and the discharge pipe.
[0052] Specifically, the thickness of the reinforcing steel plate 512 is 10 mm, which prolongs the service life of the reduction gear.
[0053] On the basis of any of the above solutions, the deceleration device 500 further includes a lifting lug 511 , and the lifting lug 511 is fixedly connected to the reinforcing steel plate 512 .
[0054] A lifting lug 511 is welded on the outer side of the deceleration chamber, which is convenient for fixing the deceleration device 500 on the anchor rod of the well wall using a steel wire rope to ensure construction safety.
[0055] There are one or more lifting ears 511. In one specific example, there are two lifting ears 511, and the two lifting ears 511 are respectively arranged on both sides between the feed pipe and the discharge pipe.
[0056] Based on any of the above solutions, the height difference between the top surface of the discharge pipe and the deceleration guide inclined surface is L, the inner diameter of the feed pipe is D, and L≥2D.
[0057] The height difference L is the net height of the deceleration area of the feed pipe. The value of the height difference L can ensure that the deceleration pier 504 effectively decelerates the concrete, and with the structure of the deceleration guide slope, the concrete can flow smoothly along the deceleration guide slope, reducing the amount of rebound after the concrete collides with the deceleration guide slope.
[0058] Specifically, the height difference between the top surface of the discharge pipe and the deceleration guide inclined surface is L, which refers to: the difference between the height of the top surface of the discharge pipe and the height at which the deceleration guide inclined surface coincides with the axis of the feed pipe.
[0059] On the basis of any of the above solutions, the upper end of the feed pipe is welded with a quick connector 507 to be connected to the upper ash sluice pipe, and the lower end of the discharge pipe is welded with a discharge pipe flange 506 to be connected to the lower rubber hose.
[0060] In one specific example, both the feed pipe and the discharge pipe are made of wear-resistant steel pipes with an outer diameter of 180 mm and a thickness of 10 mm. The quick connector 507 welded on the upper end of the feed pipe is connected to the upper ash pipe with an outer diameter of 159 mm and a thickness of 10 mm. The outer diameter of the feed pipe is slightly larger than the upper ash pipe. The deceleration pier 504 is made of a solid steel column with a diameter of 150 mm, and the upper end of the steel column is cut into a 40° bevel. The lifting lugs 511 are made of 10 mm thick steel plates and welded on both sides of the deceleration chamber 503, which is convenient for fixing the device to the anchor rod of the well wall using wire ropes to ensure construction safety.
[0061] This embodiment also provides a pouring system, including a deceleration device for conveying concrete.
[0062] Specifically, the pouring system further includes a ash sluice pipe, and a feed port 501 of the feed pipe is connected to the lower end of the ash sluice pipe.
[0063] In the description of the present invention, it should be noted that the terms "upper" and "lower" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0064] In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.
[0066] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A deceleration device for conveying concrete, characterized in that: The deceleration device (500) comprises a feed pipe, a discharge pipe and a deceleration pier (504); the upper portion of one side of the discharge pipe is fixedly connected to the lower portion of one side of the feed pipe and are internally connected to form a deceleration chamber (503); the upper end of the feed pipe has a feed port (501), the lower end of the discharge pipe has a discharge port (502), the deceleration pier (504) is installed at the lower portion of the feed pipe, and the upper end of the deceleration pier (504) has a deceleration guide slope inclined toward the discharge pipe.
2. A speed reducer for conveying concrete according to claim 1, characterized in that: The deceleration device (500) further comprises a buffer spring (505), wherein the buffer spring (505) is fixedly connected to the bottom surface of the deceleration pier (504).
3. A speed reducer for conveying concrete according to claim 2, characterized in that: The buffer spring (505) is a butterfly spring.
4. A speed reducer for conveying concrete according to claim 1, characterized in that: The included angle a between the deceleration guide inclined surface and the vertical direction is 35°-45°.
5. A speed reducer for conveying concrete according to claim 1, characterized in that: The top of the discharge pipe is provided with an inspection window (509).
6. A speed reducer for conveying concrete according to claim 5, characterized in that: One end of the inspection window (509) is hinged to the discharge pipe, and the other end is detachably connected to the discharge pipe.
7. A speed reducer for conveying concrete according to claim 1, characterized in that: The deceleration device (500) further comprises a reinforcing steel plate (512), wherein the reinforcing steel plate (512) is fixedly connected to the outer walls of the feed pipe and the discharge pipe.
8. A speed reducing device for conveying concrete according to claim 7, characterized in that: The deceleration device (500) further comprises a lifting lug (511), wherein the lifting lug (511) is fixedly connected to the reinforcing steel plate (512).
9. A speed reducing device for conveying concrete according to any one of claims 1 to 8, characterized in that: The height difference between the top surface of the discharge pipe and the deceleration guide inclined surface is L, the inner diameter of the feed pipe is D, and L≥2D.
10. A casting system, characterized in that: It comprises a speed reducing device for conveying concrete as claimed in any one of claims 1 to 9.