KR100325196B1 - Pumping Apparatus for Rock Bolt Reinforcement - Google Patents

Abstract

The present invention is a rock bolt reinforcement pumping device used in civil engineering, a pump 10 which is a filling device for injecting a filling of a predetermined flow state into the hole for civil engineering, and for supplying the filling to the pump 10 It is composed of a mixer barrel 50, a hydraulic power unit 60 which is a driving source for operating the pump 10, and a control panel 70 for controlling the entire apparatus, wherein the pump 10 Inlet 14 formed on one side of the valve block 12 for receiving, check ball 15 provided to be movable in the check ball seat 15a therein, and the check ball 15 when filling the filling A stopper 16 for preventing any detachment, a filling discharge tube 20 disposed between the valve block 12 and the hydraulic power driving tube 30 for discharging the filling to the required portion, and the hydraulic power driving tube ( Hydraulic cylinder assembly 40 directly imparting hydraulic drive force to 30) It is configured.

Existing devices coated with rubber materials that are applied only to non-abrasive liquids or high-abrasive liquids, it is very difficult to discharge the fluid mixed with high abrasive sand and could not be discharged with a large torque, As a piston type, high pressure delivery is possible, and a recessed groove for seal is installed in the piston part, and the elastic rubber packing is used to keep the tube or piston a little worn, so that the mixed fluid can be pushed out. It has the effect of eliminating defects and abrasion factors by using a valve spool to discharge coarse sand particles without trouble, and to eliminate flaws and abrasion factors, and maximize the pumping effect by discharging the filling in both the upper and lower strokes of the piston. In the stirrer, a large rotating shaft rotates and the planetary gear is rotated again within the rotating radius. Rotating stirring blades allow a large amount of cement, sand, and water to be mechanically mixed well to form concrete mortar, which prevents sediment and enables continuous rotation regardless of pumping action. have.

Description

Pumping Apparatus for Rock Bolt Reinforcement

The present invention relates to a pump for the lock bolt reinforcement pump, and more particularly, to solve the problem of expensive equipment in the device to which the various functions in the lock bolt reinforcement pumping device, and to increase the strength of the lock bolt reinforcing filler It relates to a pump for the lock bolt reinforcement.

In general, in civil engineering construction, especially in tunnel construction, holes are formed in the ground including mountain rocks. This hole opens a tunnel explosive, such as dynamite, to explode a large number of explosives, breaking the rock and widening the tunnel foundation hole.

After drilling the foundation tunnel with a certain height and width, in order to prevent the collapse of the foundation tunnel, it is placed inside the foundation tunnel with numerous foundation bolts (lock bolts) and mesh meshes are installed. The reinforcement work will be done.

This reinforcing film construction drills the hole into which a foundation bolt is inserted in a rock bed using a rock drill or a crusher. Cement mortar is poured into the hole and the foundation bolt is inserted.

When the mortar around the foundation bolt is hardened, the foundation bolt is fixed in the rock. By installing a plurality of the foundation bolts at predetermined intervals to sufficiently withstand the concrete load sprayed on the mesh.

At this time, the foundation bolt is installed deep in the rock, so that the reinforcement film is firm, so the improvement of the installation method of the foundation bolt in the reinforcement film construction has a great influence on the construction means shaft, labor cost reduction in tunnel construction and the like.

Conventionally, as the equipment used in the foundation bolt installation work, a well-equipped device, in which a boring device into which a foundation bolt is inserted, a foundation bolt insertion device, and a cement mortar injection device, are well known.

Moreover, the apparatus shown in FIG. 1 is common as a cement mortar injection apparatus among the said apparatuses.

1 is an explanatory view showing a cement injection concept of a rock bolt cement mortar injection device using a conventional monopump. In this figure, reference numeral 300 denotes a stator formed in a twisted shape, and 302 denotes a rotor assembled and rotated in the stator 300. The surface of this rotor 302 is coated with a thin rubber material for hermeticity or compressibility.

In general, a mono pump refers to a fixed quantity pump consisting of a rotating rotor and a fixed stator. The rotor 302 is twisted at a complex pitch and the stator 300 is twice the rotor pitch to receive the rotor 302. Therefore, by forming a sealed line that continuously flows between the discharge and the low pressure portion and the high pressure portion generated while the rotor 302 rotates, it generates both suction and compression functions simultaneously.

At all stages, when such a sealing operation continues, a sealed space is formed constantly. This space is created by the cross section of the rotor 302 on one rotor like axes arranged at regular intervals. In addition, when the discharge pressure is newly started, the suction pressure is generated at the same time. In FIG. 1, reference numeral 304 is a shaft connected to a drive shaft for operating the rotor 302.

The cement mortar pumping apparatus using such a mono pump receives cement mortar from a separately configured cement supply hopper and fills the hole of the rock rock into which the rock bolt is inserted.

However, the conventional rock bolt reinforcement pumping device is a very expensive because it is a function of the hole punching device and the lock bolt lock device, the cement mortar injection device using the mono pump is capable of injecting only cement mortar to fix the lock bolt The intensity was very weak. In other words, cement mortar has the advantage of fast curing speed, but because it is weak to external impact and easily broken, it is necessary to fill the rock bolt hole with concrete mortar mixed with sand to improve strength.

As a result, the cement mortar injection device using the monopump coated with the rubber material is required to have a separate device for a single purpose, and when the sand mixed concrete mortar is used as a filler, sand is swept over the rubber coating material. There is a problem that damages. This can cause failures during operation, which is a critical obstacle during the process.

The present invention has been invented to solve this problem in view of the above-mentioned conventional problem, and solves the problem of equipment cost in the device which gives various functions in the lock bolt reinforcement pumping apparatus and can increase the strength of the lock bolt reinforcement filler. It is an object of the present invention to provide a pumping device for reinforcing lock bolts having a single purpose.

1 is an explanatory view showing the cement injection concept of the cement mortar injection device for rock bolt using a conventional monopump

Figure 2 is a perspective view showing the overall configuration of the pump for the lock bolt reinforcement of the present invention

Figure 3 is a front view showing the configuration of the lock bolt reinforcement pumping device of the present invention

Figure 4 is a rear view showing the configuration of the rock bolt reinforcement pumping device of the present invention

Figure 5 is a cross-sectional view showing the configuration of the mixer barrel and the pump of the lock bolt reinforcement pumping device of the present invention

Figure 6 is an exploded perspective view showing a pump configuration of the pump for the lock bolt reinforcement of the present invention

7 and 8 is a cross-sectional view showing a pump operating state of the lock bolt reinforcement pumping device of the present invention,

7 shows the operating state of the piston raising stage of the pumping system

Figure 8 shows the piston lowering step of the pumping system, respectively.

<Explanation of symbols for main parts of the drawings>

10 pump 12 valve block

14 inlet 15: check ball

15a: check ball seat 16: stopper

20: filling discharge pipe 22: piston shaft

22a: step 22b: shaft through hole

22c: piston operating groove 24: piston

25,33 packing 26 lower chamber

27: upper chamber 30: hydraulic power drive tube

32: drive shaft 34: airtight jaw

35: joint 36: fixed pin

37: discharge hole 40: hydraulic cylinder assembly

42: cylinder rod 44: cylinder packing

45: piston 46: connection hole

47: hydraulic hose 50: mixer

51 shaft 52 screw drive body

52a: drive motor 52b: first drive gear

52c: 1st chain 52d: 1st driven gear

53: rotating plate 53a: inclined plate

54: stirring unit 54a: stirring blade

54b: axis of rotation 54c: top plate

54d: bottom plate 54e: second drive gear

54f: second driven gear 54g: second chain

55a, 55b: fixed plate 56: discharge passage

56a: discharge hole 56b: stopper

60: hydraulic power unit 62: base

64: scaffold 66: frame

70 control panel A: filling material (concrete mortar)

Locking bolt reinforcing pumping device of the present invention for achieving the above object,

It is a pumping device for reinforcing lock bolts used in civil works,

A pump, which is a filling device for injecting a filling in a predetermined flow state into a civil engineering hole,

A mixer barrel for supplying a filling material to the pump,

A hydraulic power unit which is a driving source for operating the pump,

It consists of a control panel to control the whole device,

The pump,

An inlet formed on one side of the valve block to receive the filling, a check ball fluidly installed in the check ball seat therein, a stopper for preventing any deviation of the check ball when the filling is inhaled,

A charge discharge pipe disposed between the valve block and the hydraulic power drive pipe for discharging the charge to the required portion;

It consists of a hydraulic cylinder assembly which gives a hydraulic driving force directly to this hydraulic power drive tube.

In this configuration, the inside of the filling discharge pipe, the hydraulic power drive tube and the hydraulic cylinder assembly, the piston shaft and the cylinder rod is installed over the whole and one side of the piston shaft to receive the reciprocating driving force of the cylinder rod It is better to be a drive shaft,

At one end (valve block side) of the piston shaft, a stepped head plate is formed and spaced rearwards therefrom, and a plate headed shaft through hole is also formed. Between the holes is preferably formed by a piston operating groove for receiving the piston,

In the filling discharge pipe, it is preferable that the piston is located in the piston operating groove and is installed close to the inner diameter of the filling discharge pipe, and a packing for preventing leakage of air is installed in the piston.

The filling discharge pipe is composed of a lower chamber having a larger inner diameter and an upper chamber having a smaller inner diameter, and an outer side of the driving tube may have a discharge hole for discharging the filling from the filling discharge pipe to the outside.

Existing devices coated with rubber material that are applied only to non-abrasive liquids or high-abrasive liquids are difficult to discharge fluids with abrasive sand. It is possible to pressurize sand mixed fluid because high pressure delivery is possible and seal groove is installed in piston part and elastic rubber packing is used to keep airtight even if tube or piston is worn down to some degree. In order to discharge coarse sand particles without trouble, it is effective to remove flaws and abrasion factors by using a valve spool to prevent the fluid from being caught.It maximizes the pumping effect by discharging the filling in both the upper and lower strokes of the piston. In this case, the large axis of rotation rotates and the planetary gear The electric charge is mechanically mixed with a large amount of cement, sand, and water by stirring blades so that it becomes concrete mortar, so that no sediment is formed and continuous rotation is possible regardless of the pumping operation. .

Hereinafter, with reference to the accompanying drawings will be described in more detail with respect to the pump for the lock bolt reinforcement of the present invention.

Figure 2 is a perspective view showing the overall configuration of the lock bolt reinforcement pumping device of the present invention, Figure 3 is a front view showing the configuration of the lock bolt reinforcement pumping device of the present invention, Figure 4 is a lock bolt reinforcement pumping device of the present invention 5 is a cross-sectional view showing the configuration of the mixer barrel and the pump of the lock bolt reinforcement pumping device of the present invention, Figure 6 is an exploded perspective view showing the pump configuration of the pump for lock bolt reinforcement of the present invention. 7 and 8 are cross-sectional views showing the operating state of the pump of the lock bolt reinforcement pumping device of the present invention, Figure 7 is an operating state of the piston rising step of the pumping system, Figure 8 shows the piston lowering step of the pumping system, respectively.

First, the overall configuration of the present invention will be described with reference to FIGS. 2 to 5. The pump for locking bolt reinforcement of the present invention is largely composed of four parts. A pump 10, which is a filling device for injecting a filling in a predetermined flow state into the lock bolt reinforcing hole, and a mixer barrel 50 for supplying a filling, which is a raw material mixed with cement + water + sand, to the pump 10. And a hydraulic power unit 60 as a driving source, and a control panel 70 for controlling the apparatus. In FIG. 5, reference numeral 52 denotes a screw drive body for mixing the filling material in the mixer barrel 50, the reference numeral 52 is a base for supporting and installing the components, 64 is a footrest, 66 is the It is a frame installed at the bottom or corner of the base 62 to maintain its shape.

With reference to FIG. 5, the structure of the said mixer container 50 and the assembly structure of the mixer container 50 and the pump 10 are demonstrated in more detail.

The mixer barrel 50 has a cylindrical shape as a whole, and a shaft 51 for rotation of stirring purpose is constructed in the center of the mixer barrel 50, and a rotating plate 53 for stirring is installed on the shaft 51. The rotating plate 53 is equipped with a stirring unit 54 that rotates separately.

The lower part of the rotating plate 53 is an inclined plate 53a which is inclined downward toward the shaft 51, and the stirring unit 54 is close to the height of the rotating shaft 54b and the rotating plate 53 installed at the center. Between the upper plate 54c and the lower plate 54d having a height having a length, and the upper plate 54c and the lower plate 54d, the upper and lower ends are alternately disposed 180 degrees with each other in order to increase the stirring efficiency. Consists of.

Moreover, in order to transmit rotational force to the rotating shaft 54b of the said shaft 51 and the stirring unit 54, it is provided in the drive motor 52a arrange | positioned outside the mixer cylinder 50, and the output shaft of this drive motor 52a. It consists of a first drive gear 52b, a first chain 52c serving as a power transmission means, and a first driven gear 52d provided at an upper end of the shaft 51, and stirring the lower portion of the first driven gear 52d. Separate second drive gear 54e, second driven gear 54f for unit 54, and second chain 54g spanned between these second drive gear 54e and second driven gear 54f. Consists of.

In FIG. 5, reference numeral 55a denotes a fixed plate for supporting the drive motor 52a and the shaft 51, and 55b denotes a fixed plate for supporting the rotary shaft 54b of the stirring unit 54. As shown in FIG.

An inclined discharge passage 56 and a discharge hole 56a for discharging the mixed material (filled material) to the outside are installed at one lower portion of the mixer barrel 50, and a stopper 56b is provided at the discharge hole 56a. Is fitted to be used for various types of maintenance or cleaning.

One side of the mixer barrel 50 is provided with a pump 10 which is the main component of the present invention.

The lower end of the pump 10 is disposed to be connected to the discharge passage 56 and the discharge hole 56a so as to introduce the raw material discharged into the pump 10.

Next, the structure of the reciprocating pump 10 will be described in detail with reference to FIGS. 6 to 8.

In these figures, reference numeral 12 denotes a valve block, 20 denotes a filling discharge tube disposed between the valve block 12 and the hydraulic power driving tube 30 for discharging the filling to a required portion, and 40 denotes the hydraulic power driving tube 30. It is a hydraulic cylinder assembly that directly applies hydraulic driving force to the.

One side of the valve block 12 is formed with an inlet port 14 for receiving a charge transported through the discharge passage 56 and the discharge hole 56a, and the check ball 15 is located therein. A seat 15a is formed and a stopper 16 is provided to prevent the check ball 15 from being randomly separated inward by the suction force when the filler is sucked.

And inside these filling discharge pipe 20, the hydraulic power drive tube 30 (hereinafter referred to as 'drive tube') and the hydraulic cylinder assembly 40 (hereinafter referred to as 'cylinder') approximately throughout A piston shaft 22 and a cylinder rod 42 are installed and one side of the piston shaft 22 is a drive shaft 32 to receive the reciprocating driving force of the cylinder rod 42.

In more detail, the piston shaft 22 is disposed over the filling discharge pipe 20 and the driving pipe 30 and the cylinder rod 42 is arranged over the driving pipe 30 and the cylinder 40. have.

At one end (valve block 12 side) of the piston shaft 22 is formed a stepped portion 22a having a dish head or inverted triangular cross section and spaced rearwards therefrom, and is also a dish head or inverted triangular cross section. A shaft through hole 22b having a recess is formed. As shown in Figs. 6 to 8, the shaft through hole 22b serves as a stopper for restricting the piston shaft 22 to move only a certain width in the reciprocating motion from side to side, while the hole passes through the filling from side to side. Is formed. Between the step 22a of the said piston shaft 22 and the shaft through-hole 22b, the piston actuating groove 22c is made to receive the piston 24 mentioned later.

In the filling discharge pipe 20, a piston 24 is installed in close contact with the inner diameter of the filling discharge pipe 20 and in the piston operating groove 22c, and a packing for preventing leakage of air in the piston 24 ( 25) is installed.

The filling discharge pipe 20 is composed of a lower chamber 26 having a larger inner diameter and an upper chamber 27 having a smaller inner diameter, and discharges the filling from the filling discharge pipe 20 to the outside on the outer side of the driving tube 30. A discharge hole 37 for forming is formed. In FIG. 7 and FIG. 8, reference numeral 34 denotes an airtight holding jaw including a packing 33 formed at one end of the driving shaft 32 mounted in the driving pipe 30, and the filling material is formed from the filling discharge pipe 20 side. Leakage to the drive tube 30 side is prevented positively. Reference numeral 35 is a joint connecting the drive shaft 32 and the cylinder rod 42, 36 is a fixing pin used for the joint 35, 44 is a cylinder packing for airtightness, 45 is the hydraulic cylinder assembly 40 The pistons 46 and 47 assembled in the cavities, connection holes for supplying or discharging the hydraulic oil to hydraulically drive the pistons 44 and 45, and the hydraulic hoses, A denote the filling.

Next, the operation of the lock bolt reinforcement pumping apparatus of the present invention configured as described above will be described. First, referring to FIG. 5, when the first driving gear 52b is rotated by the driving force of the motor 52a, the driving force is transmitted to the first driven gear 52d by the first chain 52c, and the shaft 51. Rotate).

As the shaft 51 rotates, the second driving gear 54e, the second chain 54g, and the second driven gear 54f, which are components of the stirring unit 54, rotate while the rotating plate 53 rotates. In order to increase the stirring efficiency, the stirring blades 54a having the upper and lower ends staggered 180 degrees are rotated while revolving about the shaft 51 to sufficiently stir the raw material as the filler in the mixer barrel 40.

The stirred filling material flows into the inclined discharge passage 56 and the discharge hole 56a for discharging the mixed material (filling material) to the outside under one side of the mixer barrel 40 and flows through the inlet 12a to the pump. (10) flows into.

Fillings introduced into the inlet 14 are introduced into the valve spool 28 side sequence controlled by a control device of a separate configuration (not shown) and flows into the lower passage 24 side through the inlet groove 28a.

Now, it is assumed that the innumerable points in Figs. 7 and 8 are the filling A made of cement mixed with sand, and this filling A is filled in the chamber at a predetermined pressure. First, with reference to FIG. 7, an operation in which the filling A is introduced into the pump 10 and discharged to the outside through the outlet passage 25 will be described.

When the drive shaft 32 is moved upward by the hydraulic cylinder assembly 40, the step between the inner diameter of the piston 24 and the outer diameter of the piston actuating groove 22c is caused by the step at the lowest level of the drive shaft 32. Since the space is blocked, the lower chamber 26 is closed so that the concrete mortar of the mixer container 50 is introduced into the lower chamber 26 through the inlet 14. At this time, the shank ball 15 is lifted up so that the concrete mortar flows into the space between the valve block 12 inner diameter and the shank ball 15 to fill the filling A, and the concrete mortar filled in the upper chamber 27. Some of the upper chamber 27 is filled up and the other part is forcibly discharged to the discharge hole (37) side.

When the drive shaft 32 reaches the top dead center, the flow of hydraulic oil is switched by the hydraulic power unit 60, and the lower stroke starts as shown in FIG. When the drive shaft 32 is lowered, the shank ball 15 closes the inlet port 14 and the piston 24 moves to the side of the lower shaft through hole 22b of the drive shaft 32, so that the blocked piston 24 The space between the inner diameter and the outer diameter of the piston actuating groove 22c is opened, and the concrete mortar inside the lower chamber 26 passes through the space shaft through hole 22b and flows into the upper chamber 27 side. And the concrete mortar filled in the upper chamber 27 is forcibly discharged to the discharge hole 37.

Subsequently, referring to FIG. 8, when the drive shaft 32 reaches the bottom dead center, the flow of the hydraulic oil is switched by the hydraulic power unit 60 to switch as shown in FIG. 7, and the above process is continuously repeated. Both the up and down strokes of the drive shaft 32 forcibly discharge the concrete mortar.

As such, the present invention provides a simple structure in the pump while discharging the filling (A) in both the up and down strokes of the piston 26, so that the pumping effect can be twice as effective as the conventional pump. It is integrated, high pressure discharge is possible, and it is possible to discharge cement each time when the pump is operated up and down, that is, continuous discharge, cement discharge is irrespective of the size of sand particle, and it is easy to maintain and maintain, and also easy to manufacture and always cement , Mix water and sand.

As described above, according to the rock bolt reinforcement pumping apparatus of the present invention, a conventional apparatus coated with a rubber material that is applied only to a liquid having no abrasion, a liquid having a high viscosity, or the like, can be used for It was very difficult to discharge and could not be discharged with a large torque.However, it is possible to send high pressure as a piston type. As it can maintain airtightness even though it is worn out, it can push out sand mixed fluid and eliminates defects and abrasion factors by preventing the fluid flow by using valve spool to discharge coarse sand particles without trouble. The pump discharges the filling in both the up and down strokes of the piston, maximizing the pumping effect. The shaft rotates and the stirring blade rotates by planetary gears within the rotation radius again so that a large amount of cement, sand, and water can be mechanically mixed well to form concrete mortar. Irrespective of the continuous rotation, it is possible to forward and reverse rotation.

Claims (4)

It is a pumping device for reinforcing lock bolts used in civil works, A pump 10 which is a filling device for injecting a filling in a predetermined flow state into a hole for civil engineering; Mixer barrel 50 for supplying a filling to the pump 10, Hydraulic power unit 60 which is a drive source for operating the pump 10, and a control panel 70 for controlling the whole device, The pump 10, An inlet 14 formed at one side of the valve block 12 to receive the filling, a check ball 15 provided to be movable in the check ball seat 15a inside thereof, and a check ball 15 when filling the filling. Stopper 16 for preventing any deviation of A charge discharge pipe 20 disposed between the valve block 12 and the hydraulic power drive pipe 30 to discharge the charge to the required portion; Locking bolt reinforcement pumping device, characterized in that composed of a hydraulic cylinder assembly (40) for directly applying a hydraulic driving force to the hydraulic power drive tube (30). A piston shaft (22) and a cylinder rod (42) are installed throughout the filling discharge pipe (20), the hydraulic power drive pipe (30), and the hydraulic cylinder assembly (40). One side of the piston shaft (22) is a lock bolt reinforcement pumping device, characterized in that the drive shaft (32) for receiving the reciprocating driving force of the cylinder rod (42). 3. A dish head type stepped jaw 22a is formed at one side end (valve block 12 side) of the piston shaft 22, and is also a dish head type shaft with a predetermined interval behind it. A through hole 22b is formed, and between the step 22a of the piston shaft 22 and the shaft through hole 22b is formed as a piston operating groove 22c for receiving the piston 24. Pumping device for reinforcing lock bolts. The filler discharge pipe (20) according to claim 2, wherein the filler discharge pipe (20) includes a lower chamber (26) having a larger internal diameter and an upper chamber (27) having a smaller internal diameter. Pumping device for reinforcing lock bolts, characterized in that the discharge hole (37) for discharging the filling to the outside from.