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CN102581954B - Underground concrete mixer for coal mine - Google Patents

Underground concrete mixer for coal mine Download PDF

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Publication number
CN102581954B
CN102581954B CN2012100440271A CN201210044027A CN102581954B CN 102581954 B CN102581954 B CN 102581954B CN 2012100440271 A CN2012100440271 A CN 2012100440271A CN 201210044027 A CN201210044027 A CN 201210044027A CN 102581954 B CN102581954 B CN 102581954B
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mixing drum
frame
coal mine
cylinder
concrete mixer
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CN2012100440271A
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CN102581954A (en
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冯开林
高波
程卫民
刘淑梅
郑娟娟
刘彬
李强
王华超
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Shandong University of Science and Technology
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Shandong University of Science and Technology
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Abstract

本发明提供一种结构紧凑的适用于煤矿井下巷道内使用的混凝土搅拌机，其主要包括机架、上料机构及搅拌机构，上料机构位于机架的前端，搅拌机构位于机架上。该搅拌机能够利用定比例的混凝土生料上料斗确定混凝土的配比、利用可调的定量供水部件确定混凝土的水灰比，液压油缸驱动链轮提升上料，液压马达驱动搅拌机搅拌后，由液压油缸推动翻转，将搅拌好的混凝土熟料倒入井下混凝土湿喷机的料斗内，在不减少搅拌能力的前提下，使其运动件所占空间最小，适于巷道作业。

Figure 201210044027

The invention provides a compact concrete mixer suitable for use in coal mine underground tunnels, which mainly includes a frame, a feeding mechanism and a mixing mechanism. The feeding mechanism is located at the front end of the frame, and the mixing mechanism is located on the frame. The mixer can determine the ratio of concrete by using the fixed ratio concrete raw material feeding hopper, and determine the water-cement ratio of the concrete by using the adjustable quantitative water supply parts. The hydraulic cylinder drives the sprocket to lift the material, and the hydraulic motor drives the mixer. The oil cylinder is pushed and turned over, and the mixed concrete clinker is poured into the hopper of the underground concrete wet spraying machine. On the premise of not reducing the mixing capacity, the space occupied by the moving parts is minimized, which is suitable for roadway operation.

Figure 201210044027

Description

Underground concrete mixer for coal mine
Technical field
The present invention relates to construction technical field under coal mine, be specifically related to a kind of concrete mixer of compact conformation.
Background technology
Extensively adopted the concrete spraying supporting in ground, tunnel and coal mining work progress, it not only can play the effect in reinforce stabilization tunnel, and can play good tunnel sealing process, prevents methane gas and water infiltration.Yet, at present in the coal mine roadway concrete spraying, more adopting the dry type concrete mortar gunite method, the subject matter existed with dampen shotcreting method comparison dry sprayig process has: rebound degree is high, seriously polluted, the concrete quality after strengthening is than the shortcoming such as low.National Administration of Work Safety Supervision classifies the dry type spraying pulp grinder as obsolete product for this reason.
At present, in the concrete sprayings such as railway, vcehicular tunnel constructions, for the concrete of whitewashing, be all commerical ready-mixed concrete, be transported to job site by agitator truck and carry out spray operation and get final product.And the whitewashing of the tunnelling under coal mine is on-the-spot, generally apart from ground, there is hundreds of rice even to surpass the degree of depth of km, be not suitable for the Special agitating transport vehicle of all kinds of mines, even this class Transporting equipment is arranged, transport concrete from ground also very uneconomical to down-hole.So comparatively economical and practical method is to carry out the concrete Site, can reversion discharging formula mixer and horizontal axis forced mixer be arranged as the site mixed concrete mixer at present, a total shortcoming of these mixers is all to design by ground construction, bulky, can not adapt to the construction operation of narrow space in coal mine down-hole tunnel at all.
Therefore, the concrete mixer used in coal mine down-hole tunnel that is applicable to that needs a kind of compact conformation of design.
Summary of the invention
The object of the present invention is to provide a kind of concrete mixer used in coal mine down-hole tunnel that is applicable to of compact conformation, it has novel structure, advantage easy to use.
To achieve these goals, the technical solution of employing is in the present invention:
Underground concrete mixer for coal mine, comprise frame, feed mechanism and rabbling mechanism, and feed mechanism is positioned at the front end of frame, and rabbling mechanism is positioned on frame;
Described feed mechanism comprises support, elevating hopper, hydraulic cylinder, the first sprocket shaft, the second sprocket shaft, and support consists of bottom girder, the two H shaped steel that is erected at bottom girder top and upper beam;
The front end of the piston rod of hydraulic cylinder is connected with bottom girder, the front end of the cylinder barrel of hydraulic cylinder connects the first sprocket shaft, the rear end of the cylinder barrel of hydraulic cylinder connects the second sprocket shaft, and the two ends of the first sprocket shaft and the second sprocket shaft all are connected with directive wheel, and directive wheel is limited in the inboard of two H shaped steel;
Be provided with sprocket wheel on the first sprocket shaft and the second sprocket shaft, main haulage chain one end is fixed in bottom girder, walks around tractive elevating hopper after the sprocket wheel on the second sprocket shaft, and auxiliary haulage chain one end is fixed in upper beam, walks around after the sprocket wheel on the first sprocket shaft oppositely tractive elevating hopper;
The arranged outside of H shaped steel has slide, slide slides up and down by two moving wheels that are limited in the H shaped steel outside, the left and right sides, upper end of elevating hopper is rotationally connected by hanger and slide, elevating hopper leans against on slide, be rotatably connected to the elevating hopper overturning oil cylinder on slide, the piston rod of elevating hopper overturning oil cylinder is connected with the engaging lug on elevating hopper.
Further, described rabbling mechanism comprises mixing drum, and the mixing drum accumbency, on frame, is horizontally arranged with shaft in mixing drum, on shaft, along the length direction dislocation of axle, erects mixing arm is arranged, and the front end of mixing arm is provided with stirring vane.
Further, described mixing drum consists of main cylinder and cover two parts, and the inwall of main cylinder posts abrasion-proof backing block, and shaft adopts self-aligning bearing to support.
Further, described frame is L-shaped, and mixing drum is connected with the frame upper end by the hanger of mixing drum, is provided with the mixing drum overturning oil cylinder be rotationally connected on frame, and the piston rod of mixing drum overturning oil cylinder is connected with the engaging lug on mixing drum.
Further, the bottom of described frame is the fuel tank that holds hydraulic oil.
Further, described elevating hopper is divided into three batch bins by baffle plate, is respectively cement ingredient storehouse, stone batch bin, sand batch bin, and the batch bin top is discharging opening, and a side of discharging opening is provided with water tank, and water tank is connected with mixing drum by flexible pipe.
Further, in described water tank, be provided with liquid level valve, at first mine water accesses hydraulic oil cooler, accesses afterwards spring automatic homing valve, then accesses liquid level valve, and water tank is connected with the sprinkler pipe in being arranged on mixing drum by flexible pipe.
Further, the below of described frame is provided with road wheel.
Beneficial effect of the present invention:
1, underground concrete mixer for coal mine, adopt Hydraulic Cylinder the second sprocket shaft, by main haulage chain tractive elevating hopper, the elevating hopper overturning oil cylinder promotes the elevating hopper upset, concrete raw material feeding process is decomposed into and promotes and two actions of upset, reduced action height used, made this machine be applicable to construction operation in coal mine down-hole tunnel.
2, the upset of mixing drum is driven by the mixing drum overturning oil cylinder, and the position of mixing drum overturning oil cylinder arranges and increases its magnification, under the prerequisite that does not increase altitude measurement, easily completes and pours the concrete grog be stirred into concrete spraying machine.
3, rabbling mechanism, by fluid motor-driven, had both overcome motor reducer and had directly driven the shortcoming that is difficult for realizing overload protection, was conducive to again the structural configuration of each parts.
4, feed mechanism has adopted multiplication principle, unit height of the every rising of hydraulic cylinder, main haulage chain and auxiliary haulage chain drive two unit height of elevating hopper rising jointly, hydraulic cylinder travel is amplified, increased the magnification of oil cylinder, overcome the unsettled shortcoming of employing telescopic cylinder movement velocity, strengthened the reliability of system.
5, the liquid level valve of liquid-level-adjustable is housed in water tank, makes each inflow controlled, in conjunction with spring automatic homing valve, the water yield that can guarantee at every turn to pour into mixing drum is consistent, has guaranteed the ratio of mud of ready-mixed concrete.
6, elevating hopper is divided into three batch bins by baffle plate, is respectively cement ingredient storehouse, stone batch bin, sand batch bin, by the proportioning of each concrete material of volume controlled of each batch bin.
7, take full advantage of airframe structure, using frame lower as fuel tank, make whole machine compacter, saved space, also reduced cost simultaneously.
8, shaft adopts self-aligning bearing to support, and can adapt to resistance larger in whipping process, adopts the combination sealing form that rubber seal is combined with floating seal can protect better bearing, extends service life of a machine.
9, the below of frame is provided with road wheel, and convenient carrying walking in tunnel, strengthened the flexibility of concrete mixer, also reduced workman's labour intensity simultaneously.
The accompanying drawing explanation
Fig. 1 is the structural representation of underground concrete mixer for coal mine.
Fig. 2 is elevating hopper rollover states figure.
Fig. 3 is mixing drum rollover states figure.
Fig. 4 is the feed mechanism structural representation.
Fig. 5 is the cutaway view of feed mechanism.
Fig. 6 is the structural representation of elevating hopper.
Fig. 7 is the cutaway view of mixing drum.
Fig. 8 is the fundamental diagram that mixing drum is quantitatively gone up water.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail:
In conjunction with Fig. 1 to Fig. 8, underground concrete mixer for coal mine, comprise frame 2, feed mechanism 1 and rabbling mechanism 3, and feed mechanism 1 is positioned at the front end of frame 2, and rabbling mechanism 3 is positioned on frame 2.
Described feed mechanism 1 comprises support 11, elevating hopper 12, hydraulic cylinder 13, the first sprocket shaft 14, the second sprocket shaft 15, and support 11 consists of bottom girder 111, the two H shaped steel 112 that is erected at bottom girder 111 tops and upper beam 113.
The front end of the piston rod of hydraulic cylinder 13 is connected with bottom girder 111, the front end of the cylinder barrel of hydraulic cylinder 13 connects the first sprocket shaft 14, the rear end of the cylinder barrel of hydraulic cylinder 13 connects the second sprocket shaft 15, the two ends of the first sprocket shaft 14 and the second sprocket shaft 15 all are connected with directive wheel 16, and directive wheel 16 is limited in the inboard of two H shaped steel 112.
Be provided with sprocket wheel 17 on the first sprocket shaft 14 and the second sprocket shaft 15, main haulage chain 18 1 ends are fixed in bottom girder 111, walk around the rear tractive elevating hopper 12 of sprocket wheel 17 on the second sprocket shaft 15, auxiliary haulage chain 19 1 ends are fixed in upper beam 113, walk around the rear reverse tractive elevating hopper 12 of sprocket wheel 17 on the first sprocket shaft 14.
The arranged outside of H shaped steel 112 has slide 4, slide 4 slides up and down by two moving wheels 41 that are limited in H shaped steel 112 outsides, the left and right sides, upper end of elevating hopper 12 is rotationally connected by hanger 121 and slide 4, elevating hopper 12 leans against on slide 4, be rotatably connected to elevating hopper overturning oil cylinder 42 on slide 4, the piston rod of elevating hopper overturning oil cylinder 42 is connected with the engaging lug 122 on elevating hopper 12.
Rabbling mechanism 3 comprises mixing drum 31, and mixing drum 31 accumbency, on frame 2, are horizontally arranged with shaft 32 in mixing drum 31, on shaft 32, along the length direction dislocation of axle, erects mixing arm 33 is arranged, and the front end of mixing arm 33 is provided with stirring vane 34.Described mixing drum 31 consists of main cylinder 311 and cover 312 two parts, and the inwall of main cylinder 311 posts abrasion-proof backing block 313, and shaft 32 adopts self-aligning bearing to support.Described frame 2 is L-shaped, and mixing drum 31 is connected with frame 2 upper ends by the hanger 314 of mixing drum, is provided with the mixing drum overturning oil cylinder 35 be rotationally connected on frame 2, and the piston rod of mixing drum overturning oil cylinder 35 is connected with the engaging lug 315 on mixing drum 31.The bottom of described frame 2 is the fuel tanks that hold hydraulic oil, and the below of frame 2 is provided with road wheel 21.
Elevating hopper 12 is divided into three batch bins by baffle plate, is respectively cement ingredient storehouse, stone batch bin, sand batch bin, and the batch bin top is discharging opening, and a side of discharging opening is provided with water tank 5, and water tank 5 is connected with mixing drum 31 by flexible pipe.Be provided with liquid level valve 51 in described water tank 5, at first mine water accesses hydraulic oil cooler 52, linking springs automatic homing valve 53 afterwards, then connect liquid level valve 51, water tank 5 is connected with the sprinkler pipe 54 in being arranged on mixing drum 31 by flexible pipe.
As shown in Figure 1, Figure 2, shown in Fig. 4, Fig. 5, hydraulic cylinder 13 promotes the first sprocket shaft 14, the second sprocket shaft 15 is risen by main haulage chain 18 and the common elevating hopper 12 that drives of auxiliary haulage chain 19, and concrete raw material feeding process is decomposed into and promotes and two actions of upset, can effectively reduce so the shared height of action.Feed mechanism has adopted multiplication principle, unit height of the every rising of hydraulic cylinder 13, common two unit height of elevating hopper 12 risings that drive of main haulage chain 18 and auxiliary haulage chain 19, hydraulic cylinder 13 strokes are amplified, increased the magnification of oil cylinder, overcome the unsettled shortcoming of employing telescopic cylinder movement velocity, strengthened the reliability of system.
Main haulage chain 18 1 ends are fixed on bottom girder 111 walks around tractive elevating hopper 12 after sprocket wheel, the front end of hydraulic cylinder 13 cylinder barrels connects the first sprocket shaft 14, auxiliary haulage chain 19 1 ends are fixed in upper beam 113, walk around the rear reverse tractive elevating hopper 12 of sprocket wheel 17 on the first sprocket shaft 14, realize the synchronous tractive of both direction to elevating hopper 12, and to make the velocity of displacement of elevating hopper 12 are 2 times of hydraulic cylinder 13 hoisting velocities.
Elevating hopper 12, around the hopper road wheel spinning movement of turning cylinder, completes to the feeding process of mixing drum 31, just because of this structure, the radius of gyration of elevating hopper 12 can be accomplished smaller, the space hold while also just having reduced material loading.Be quantitative water tank above elevating hopper, namely, completing to the quantitative water supply that has completed mixer in siccative on mixing drum, complete stirring.After material loading, the piston rod of upset elevating hopper overturning oil cylinder 42 is regained, and then state when elevating hopper is got back to as Fig. 1 utilizes operating valve to control the rising of elevating hopper and the withdrawal of elevating hopper overturning oil cylinder 42, elevating hopper 12 ground that falls back.
Elevating hopper 12 as shown in Figure 6 is the sheet metal weldment, inside is divided into three volume spaces by baffle plate, be used for respectively splendid attire cement, stone and sand, owing in advance through calculating in volume, having determined concrete raw material amount that mixing drum is required and the ratio between the three, as long as just can determine concrete volume proportion so fill these three volume spaces, its Position Design is lower, can easily realize artificial loading like this.
As Fig. 3 is that mixing drum 31 is poured the concrete be stirred into the working state figure of wet-spraying machine hopper, the joystick of operation banked direction control valves stretches out the piston rod of mixing drum overturning oil cylinder 35, mixing drum 31 just overturns around rotating shaft, the concrete be stirred is poured in wet-spraying machine, control mixing drum overturning oil cylinder 35 by joystick again after being finished down, mixing drum is regained to original position.
As shown in Figure 8, at first mine water accesses hydraulic oil cooler 52, accesses afterwards spring automatic homing valve 53, then accesses liquid level valve 51, and water tank 5 is connected with the sprinkler pipe 54 in being arranged on mixing drum 31 by flexible pipe.The operation principle of spring automatic homing valve 53 is under normality, ball valve by under the effect of spring force in closed condition, when External Force Acting, during at ball valve handle, ball valve is opened, pipeline is connected.The operation principle of liquid level valve is that water level descends in the water tank, and valve opens water supply, and when water level rises to while requiring water level, ball-cock assembly is closed, and valve stops supplying water.
During in original position, act on spring automatic homing valve when elevating hopper, spring automatic homing valve is opened, and mine water by liquid level valve, enters water tank by spring automatic homing valve.Water level in water tank arrives while requiring water level, and liquid level valve is closed automatically, stops to cistern water supply, and when elevating hopper starts material loading, spring automatic homing valve automatically cuts out under the effect of spring force.Along with rising and the upset of elevating hopper, the mine water in water tank, under the effect of gravity, enters the mixing drum sprinkler pipe by pipeline, starts watering.Complete material on elevating hopper, while getting back to original position, open spring automatic homing valve, starts to cistern water supply.A cycle period completes.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention also is not limited in above-mentioned giving an example, and the variation that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement, also should belong to protection scope of the present invention.

Claims (8)

1.煤矿井下混凝土搅拌机，其特征在于：包括机架、上料机构及搅拌机构，上料机构位于机架的前端，搅拌机构位于机架上；1. The coal mine underground concrete mixer is characterized in that it includes a frame, a feeding mechanism and a mixing mechanism, the feeding mechanism is located at the front end of the frame, and the mixing mechanism is located on the frame; 所述上料机构包括支架、上料斗、液压缸、第一链轮轴、第二链轮轴，支架由底梁、竖立在底梁上方的两根H型钢以及上梁构成；The feeding mechanism includes a support, a hopper, a hydraulic cylinder, a first sprocket shaft, and a second sprocket shaft. The support is composed of a bottom beam, two H-shaped steels erected above the bottom beam, and an upper beam; 液压缸的活塞杆的前端与底梁连接，液压缸的缸筒的前端连接第一链轮轴，液压缸的缸筒的后端连接第二链轮轴，第一链轮轴和第二链轮轴的两端均连接有导向轮，导向轮限位于两根H型钢的内侧；The front end of the piston rod of the hydraulic cylinder is connected to the bottom beam, the front end of the cylinder barrel of the hydraulic cylinder is connected to the first sprocket shaft, the rear end of the cylinder barrel of the hydraulic cylinder is connected to the second sprocket shaft, and the two Both ends are connected with guide wheels, and the guide wheels are limited to the inner sides of the two H-shaped steels; 第一链轮轴和第二链轮轴上均设置有链轮，主牵引链一端固定于底梁，绕过第二链轮轴上的链轮后牵拉上料斗，辅牵引链一端固定于上梁，绕过第一链轮轴上的链轮后反向牵拉上料斗；Both the first sprocket shaft and the second sprocket shaft are equipped with sprockets, one end of the main traction chain is fixed on the bottom beam, and after bypassing the sprocket on the second sprocket shaft, it pulls the upper hopper, and one end of the auxiliary traction chain is fixed on the upper beam. Pull the upper hopper in reverse after bypassing the sprocket on the first sprocket shaft; H型钢的外侧设置有滑座，滑座通过两个限位于H型钢外侧的运动轮上下滑动，上料斗的上端左右两侧通过吊耳与滑座转动连接，上料斗靠在滑座上，滑座上转动连接有上料斗翻转油缸，上料斗翻转油缸的活塞杆与上料斗上的连接耳连接。There is a sliding seat on the outside of the H-shaped steel, and the sliding seat slides up and down through two moving wheels limited to the outer side of the H-shaped steel. The seat is rotatably connected with an upper hopper overturning oil cylinder, and the piston rod of the upper hopper overturning oil cylinder is connected with the connecting ear on the upper hopper. 2.根据权利要求1所述的煤矿井下混凝土搅拌机，其特征在于：所述搅拌机构包括搅拌筒，搅拌筒横卧在机架上，搅拌筒内横向设置有搅拌轴，搅拌轴上沿轴的长度方向错位竖立有搅拌臂，搅拌臂的前端设有搅拌叶片。2. The coal mine underground concrete mixer according to claim 1, characterized in that: the mixing mechanism includes a mixing drum, the mixing drum is lying on the frame, and the mixing drum is horizontally provided with a stirring shaft, and the stirring shaft is arranged along the shaft. Stirring arms are erected in dislocation in the length direction, and stirring blades are arranged at the front ends of the stirring arms. 3.根据权利要求2所述的煤矿井下混凝土搅拌机，其特征在于：所述搅拌筒由主筒体和筒盖两部分构成，主筒体的内壁贴有耐磨衬板，搅拌轴采用调心轴承支撑。3. The coal mine underground concrete mixer according to claim 2, characterized in that: the mixing drum is composed of a main cylinder and a cylinder cover, the inner wall of the main cylinder is affixed with a wear-resistant liner, and the stirring shaft adopts self-aligning Bearing support. 4.根据权利要求2所述的煤矿井下混凝土搅拌机，其特征在于：所述机架呈L形，搅拌筒通过搅拌筒的吊耳与机架上端连接，机架上设置有转动连接的搅拌筒翻转油缸，搅拌筒翻转油缸的活塞杆与搅拌筒上的连接耳连接。4. The coal mine underground concrete mixer according to claim 2, characterized in that: the frame is L-shaped, the mixing drum is connected to the upper end of the frame through the lifting lug of the mixing drum, and the frame is provided with a rotating and connected mixing drum Turn over the oil cylinder, the piston rod of the mixing drum turning oil cylinder is connected with the connecting ear on the mixing drum. 5.根据权利要求4所述的煤矿井下混凝土搅拌机，其特征在于：所述机架的下部是盛放液压油的油箱。5. The coal mine underground concrete mixer according to claim 4, characterized in that: the lower part of the frame is an oil tank containing hydraulic oil. 6.根据权利要求2所述的煤矿井下混凝土搅拌机，其特征在于：所述上料斗被挡板分为三个配料仓，分别是水泥配料仓、石子配料仓、沙子配料仓，配料仓上方为出料口，出料口的一侧设置有水箱，水箱通过软管与搅拌筒连接。6. The coal mine underground concrete mixer according to claim 2, characterized in that: the upper hopper is divided into three batching bins by a baffle plate, which are respectively a cement batching bin, a stone batching bin, and a sand batching bin, and above the batching bin is The discharge port is provided with a water tank on one side of the discharge port, and the water tank is connected with the mixing drum through a hose. 7.根据权利要求6所述的煤矿井下混凝土搅拌机，其特征在于：所述水箱内设置有液位阀，矿井水首先接入液压油冷却器，之后接入弹簧自动归位阀，再接入液位阀，水箱通过软管与设置在搅拌筒内的洒水管连接。7. The coal mine underground concrete mixer according to claim 6, characterized in that: the water tank is provided with a liquid level valve, the mine water is first connected to the hydraulic oil cooler, then connected to the spring automatic return valve, and then connected to the The liquid level valve and the water tank are connected with the sprinkling pipe arranged in the mixing drum through a hose. 8.根据权利要求1所述的煤矿井下混凝土搅拌机，其特征在于：所述机架的下方设置有行走轮。8. The coal mine underground concrete mixer according to claim 1, characterized in that: the bottom of the frame is provided with traveling wheels.
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