CN205618167U - Grooving telescopic machanism and grooving injection apparatus in advance for injection apparatus in advance - Google Patents

Abstract

The utility model provides a telescopic mechanism for a pre-cut groove injection device, which comprises a telescopic oil cylinder and a basic arm, a middle telescopic arm and an inner telescopic arm arranged radially from outside to inside, the cylinder tail end of the telescopic oil cylinder and the tail end of the basic arm body. The front end of the telescopic oil cylinder cylinder rod is connected with the front end of the middle telescopic arm body, and the expansion and contraction of the oil cylinder makes the middle telescopic arm do telescopic movement relative to the basic arm; the axial front end and tail end of the middle telescopic arm body are respectively fixed with the first reversing Wheel and the second reversing wheel, the special connection of two reversing wheels and two chain ropes makes the inner telescopic arm and the middle telescopic arm synchronously expand and contract when expanding and contracting with the oil cylinder. The structure of the guide groove and the slide block in the utility model solves the problem of radial sliding and circular rotation between the arms when the telescopic mechanism moves, and the linear motion can be fully maintained during the telescopic movement of the arms.

Description

Telescoping mechanism for pre-grooving spraying device and pre-grooving spraying device

technical field

The utility model relates to the field of construction machinery, in particular to a telescoping mechanism for a pre-cut groove injection device and a corresponding pre-cut groove injection device.

Background technique

Pre-cut groove technology refers to the use of equipment to cut a continuous narrow groove on the outer edge of the tunnel section before tunnel excavation, and pour concrete into it to form a shell that acts as a pre-support for subsequent tunnel excavation. Technology. For example, patent 201210069001.2 discloses a central shaft type pre-grooving equipment, which includes a traveling mechanism, a central shaft device, a frame support, front and rear columns, a cutting device, a grouting system, an electrical system and a hydraulic system; a central shaft device It includes a sleeve and a rotating shaft arranged in the sleeve, the sleeve is fixed on the walking mechanism, the frame support is arranged at the front and back of the sleeve, and the front and rear columns are respectively arranged at the front and rear ends of the rotating shaft and are hinged with supports; The cutting device includes a chain knife assembly and a knife beam, and a second telescopic mechanism is arranged between the chain knife assembly and the knife beam. A third telescopic mechanism is provided between the support and the support; the frame support includes a column and a bottom plate arranged under the column, and a fourth telescopic mechanism is provided between the column and the bottom plate.

The pre-grooving injection device (grouting system) is a mechanism for concrete pouring. In the pre-grooving equipment, the injection device is in a contracted state when it is not working, and it can be extended to a certain distance when it is working. critical component for successful perfusion. The prior art includes a primary telescopic mechanism for a pre-groove injection device using an oil cylinder, which has a short telescopic distance and limited application. However, long-distance telescopic use of multiple oil cylinders or multi-stage oil cylinders has complex structure, uncompact size, poor stability, and heavy weight.

Therefore, there is a need in the art for a multi-stage telescopic mechanism for a pre-cut groove injection device with simple structure, compact size, good stability and suitable weight.

Utility model content

Therefore, the utility model provides a telescoping mechanism for a pre-cutting injection device, including a telescopic oil cylinder and a basic arm, a middle telescopic arm and an inner telescopic arm arranged radially from the outside to the inside, the cylinder tail end of the telescopic oil cylinder and the basic arm body The front end of the telescopic oil cylinder cylinder rod is connected with the front end of the middle telescopic arm body, and the expansion and contraction of the oil cylinder makes the middle telescopic arm do telescopic movement relative to the basic arm; the axial front end and tail end of the middle telescopic arm body are respectively fixed with first The reversing wheel and the second reversing wheel, one end of the first chain rope reversing through the first reversing wheel is connected with the hinge seat A fixedly connected to the axial tail end of the basic arm body, and the other end is fixedly connected with the shaft of the inner telescopic arm body It is connected to the hinge seat B at the tail end, so that the inner telescopic arm and the middle telescopic arm extend out synchronously when the oil cylinder is extended; one end of the second chain rope reversing through the second reversing wheel is fixedly connected to the hinge at the axial front end of the basic arm body. The seat C is connected, and the other end is connected with the hinge seat D fixedly connected to the axial front end of the inner telescopic arm body, so that the inner telescopic arm and the middle telescopic arm shrink synchronously when the oil cylinder shrinks.

Those skilled in the art can understand that the "inner telescopic arm 3 and the middle telescopic arm 2 are synchronously extended when the oil cylinder is extended" means that when the speed of the middle telescopic arm 2 relative to the basic arm 1 is v, the inner telescopic arm 3 is relatively The speed of the middle telescopic arm 2 is also v, and the speed of the inner telescopic arm 3 relative to the basic arm 1 is 2v.

In a specific implementation manner, the hinge seat A12, the second reversing wheel 22 and the hinge seat B32 are arranged in sequence from the rear end to the front end in the axial direction. Specifically, the hinge seat B32 , the hinge seat C11 , the first reversing wheel 21 and the hinge seat D31 are arranged in sequence from the rear end to the front end in the axial direction.

In a specific embodiment, the inner telescopic arm 3 is arranged radially outside the material conveying pipe for conveying and spraying concrete.

In a specific embodiment, the basic arm body 10 has a first guide groove 13 on the radially inner side, and a first slider 23 is arranged on the radially outer side of the middle telescopic arm body 20, so that when the middle telescopic arm moves relative to the basic arm, the first sliding block 23 A slider slides axially forward and backward in the first guide groove.

In a specific embodiment, the middle telescopic arm body 20 has a second guide groove 24 on the radially inner side, and the inner telescopic arm body 30 has a second slider 33 on the radially outer side, so that when the inner telescopic arm moves relative to the middle telescopic arm, the first The two sliders slide axially forward and backward in the second guide groove.

In a specific embodiment, a partition 25 is provided inside the middle telescopic arm body 20 to separate the inner cavity thereof.

In a specific embodiment, the reversing wheel is a pulley, and correspondingly the chain rope is a steel wire rope. Or the reversing wheel is a sprocket, and the corresponding chain rope is a chain.

The utility model also provides a pre-groove spraying device, which includes the above telescopic mechanism, a material conveying pipe arranged radially inside the inner telescopic arm body 30 and a coiling device connected to one end of the length of the material conveying pipe.

The utility model first solves the problem of synchronous expansion and contraction of the middle telescopic arm 2 and the inner telescopic arm 3 through the combination of the pulley, the oil cylinder and the chain rope. Secondly, the utility model solves the problem of accurate guiding of the telescopic arm body containing the "spraying pipe for concrete delivery" through reasonable setting of the guiding device. The utility model also separates each active part by setting a partition, so that the devices are not disturbed, and the reliability of the device is higher.

Description of drawings

Fig. 1 is the axial structural representation of telescopic mechanism shown in the utility model,

Fig. 2 is the radial structure diagram of telescoping mechanism shown in the utility model;

Among them, the basic arm 1, the middle telescopic arm 2, the inner telescopic arm 3, the first chain rope 4, the second chain rope 5, the telescopic oil cylinder 6, the basic arm body 10, the hinge seat C11, the hinge seat A12, the first guide groove 13 , Middle telescopic arm body 20, first reversing wheel 21, second reversing wheel 22, first slider 23, second guide groove 24, inner telescopic arm body 30, hinge seat D31, hinge seat B32, second slide Block 33.

detailed description

The utility model provides a telescopic mechanism for a pre-cut groove injection device, which includes a telescopic oil cylinder 6 and a basic arm 1, a middle telescopic arm 2 and an inner telescopic arm 3 arranged radially from outside to inside, and the tail end of the telescopic oil cylinder 6 is connected to the The tail end of the basic arm body 10 is connected, and the front end of the telescopic oil cylinder 6 cylinder rod is connected with the front end of the middle telescopic arm body 20. The expansion and contraction of the oil cylinder makes the middle telescopic arm 2 perform telescopic movement relative to the basic arm 1; and the tail end are respectively fixedly provided with a first reversing wheel 21 and a second reversing wheel 22, and one end of the first chain rope 4 that is reversing through the first reversing wheel 21 is fixedly connected to the hinge at the axial tail end of the basic arm body 10. The seat A12 is connected, and the other end is connected with the hinge seat B32 fixedly connected to the axial tail end of the inner telescopic arm body 30, so that the inner telescopic arm 3 and the middle telescopic arm 2 are synchronously extended when the oil cylinder is stretched out; One end of the reversing second chain rope 5 is connected to the hinge seat C11 fixedly connected to the axial front end of the basic arm body 10, and the other end is connected to the hinge seat D31 fixedly connected to the axial front end of the inner telescopic arm body 30, so that it shrinks with the oil cylinder. The inner telescopic arm 3 and the middle telescopic arm 2 shrink synchronously.

In the utility model, because flexible parts such as steel wire ropes only have the effect of pulling but not pushing, therefore, when the telescopic arm stretches out, the first reversing wheel 21 and the first chain rope 4 always work, and when the telescopic arm retracts Always the second reversing wheel 22 and the second chain rope 5 are playing a pulling effect.

In the utility model, the first reversing wheel 21 and the second reversing wheel 22 are fixed on the front and rear ends of the telescopic arm body 20 in the axial direction, and in the radial direction, the first reversing wheel 21 and the second reversing wheel The position of 22 can be set arbitrarily, and it can be positioned at above or below the dividing plate, as long as there is no mutual interference between the running parts.

In the utility model, the cross-sectional shapes of the basic arm body and the telescopic arm body are not limited to square tubes, but can also be oval tubes or round tubes, which are not limited in the utility model.

The telescopic mechanism used for the pre-cut groove injection device in the utility model is different from the telescopic mechanism of the concrete spraying vehicle. The material conveying pipe (conveying concrete) in the concrete spraying vehicle is arranged on the radially outer side of the telescopic arm and the basic wall, and the material conveying pipe is in a drooping or straightening state. And the material conveying pipe (concrete conveying) of pre-cut groove injection device in the utility model is arranged on the radial inner side of telescopic arm, and one end of material conveying pipe can be provided with coiling pipe device to make telescopic arm shrink when material conveying pipe is coiled.

In the present utility model, the "front end" and "tail end" are not limited to the end positions of the axial length, and they refer to the front 1/3 part and the tail 1/3 part of the axial length of the corresponding component respectively.

In a specific embodiment, the basic arm body 10 has a first guide groove 13 on the radially inner side, and a first slider 23 is arranged on the radially outer side of the middle telescopic arm body 20, so that when the middle telescopic arm moves relative to the basic arm, the first sliding block 23 A slider slides axially forward and backward in the first guide groove. And the middle telescopic arm body 20 has a second guide groove 24 radially inside, and the inner telescopic arm body 30 has a second slider 33 radially outside, so that the second slider is in the second guide groove when the inner telescopic arm moves relative to the middle telescopic arm. Slide back and forth along the axis. Those skilled in the art know that slide blocks can also be arranged on the radially inner side of the basic arm body 10 and the middle telescopic arm body 20, and guide grooves can be respectively set on the radially outer side of the middle telescopic arm body 20 and the inner telescopic arm body 30. The effect of stabilizing the guiding of the sliding of the telescopic arm can be realized.

It can be seen from the accompanying drawings that the purpose of this utility model is to provide a two-stage synchronous expansion and contraction mechanism for the pre-grooving injection device using one oil cylinder. The specific scheme is as follows:

As shown in Figure 1, part 1 is a basic arm, the head of the basic arm body 10 is fixedly provided with hinge seat C11, and the tail is fixedly provided with hinge seat A12; part 2 is a middle telescopic arm, and the head of middle telescopic arm body 20 is fixedly provided with The pulley 21 is fixedly provided with a pulley 22 at the tail; the part 3 is an inner telescopic arm, and the head of the inner telescopic arm body 30 is fixedly provided with a hinge seat 31, and the tail is fixedly provided with a hinge seat 32; the two ends of the first wire rope 4 are respectively connected to the hinge seat A12 , hinge seat B32, and walk around pulley 21; the second wire rope 5 two ends connect hinge seat C11, hinge seat D31 respectively, and walk around pulley 22; The front end of the 6 cylinder rods of the oil cylinder links to each other with the front end of the middle telescopic arm body 20 .

When the telescopic oil cylinder 6 is extended, the basic arm 1 does not move, and the middle telescopic arm 2 stretches out with double the cylinder elongation speed (v) relative to the basic arm 1. Under the action of the steel wire rope 4, the inner telescopic arm 3 is relatively 1 extends at twice the speed of the oil cylinder (2v); that is, the speed of the inner telescopic arm 3 relative to the middle telescopic arm 2 is twice the speed of the oil cylinder extension (v), that is, the inner telescopic arm 3 and the middle telescopic arm 2 extend synchronously . When the telescopic oil cylinder is retracted, the basic arm 1 does not move, and the middle telescopic arm retracts at twice the cylinder retraction speed relative to the basic arm. Retract, at this moment, the speed of the inner telescopic arm is double the oil cylinder retraction speed relative to the speed of the middle telescopic arm, that is, the inner telescopic arm 3 and the middle telescopic arm 2 are retracted synchronously.

As shown in Figure 2, the basic arm body 10 has a first guide groove 13 on the radially inner side, and a first slider 23 is arranged on the radially outer side of the middle telescopic arm body 20. When the middle telescopic arm moves relative to the basic arm, the first slider 23 The first guide groove 13 slides inside, and the first guide groove 13 restricts the first slider 23 in other directions except the axial direction. The middle telescopic arm body 20 has a second guide groove 24 on the radially inner side, and the inner telescopic arm body 30 has a second slider 33 on the radially outer side. When the inner telescopic arm moves relative to the middle telescopic arm, the second slider 33 is in the second guide groove 24, the second guide groove 24 limits the second sliding block 33 in other directions except the axial direction.

In addition, the interior of the middle telescopic arm body 20 is provided with a partition 25 that separates the inner cavity, and the partition 25 divides the inner space of the middle telescopic arm into two spaces, one space is used for installing the telescopic oil cylinder 6, and the other space is used for installing other structures. The two spaces are independent of each other and do not affect each other.

In the utility model, the steel wire rope used is not limited to a single wire rope, but can be a steel wire rope group.

In addition, not only can a partition be provided in the middle telescopic arm to divide it into two independent spaces, but also a partition can be used to divide the inner cavity of the basic arm body and the inner telescopic arm body into two or more independent spaces.

The utility model uses the oil cylinder, the pulley and the wire rope structure to realize the synchronous expansion and contraction of the middle telescopic arm and the inner telescopic arm of the three-section arm structure. Compared with the structure using two telescopic oil cylinders in the prior art, one telescopic oil cylinder is reduced, and the telescopic time is reduced. Improve telescopic efficiency, increase the load capacity of the telescopic arm, reduce costs, simplify the layout of material delivery pipes, and reduce weight. That is to say, compared with the use of multi-stage oil cylinders, the utility model has compact structure size, high expansion and contraction efficiency, less instability during expansion and contraction, and lower cost. The structure of the guide groove and the slider solves the problem of radial sliding and circular rotation between the arms during movement, and the arm can completely maintain a straight line during telescopic movement. The middle telescopic arm is separated into two independent spaces by a partition, so that the hydraulic cylinder and other structures do not affect each other during installation, and the hidden danger of interference is eliminated.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. A telescoping mechanism for a pre-cut groove injection device, comprising a telescopic oil cylinder (6) and a basic arm (1) arranged radially from outside to inside, a middle telescopic arm (2) and an inner telescopic arm (3), the telescopic oil cylinder The cylinder tail end of (6) links to each other with the tail end of basic arm body (10), and telescopic oil cylinder (6) cylinder rod front end links to each other with the front end of middle telescopic arm body (20), and the telescoping of oil cylinder makes middle telescopic arm (2) relative to The basic arm (1) performs telescopic movement; The axial front end and the tail end of the middle telescopic arm body (20) are respectively fixedly provided with a first reversing wheel (21) and a second reversing wheel (22). One end of the chain rope (4) is connected with the hinge seat A (12) fixedly connected to the axial tail end of the basic arm body (10), and the other end is fixedly connected with the hinge seat B (32) at the axial tail end of the inner telescopic arm body (30). ) connection, so that when the oil cylinder stretches out, the inner telescopic arm (3) and the middle telescopic arm (2) are synchronously stretched out; The basic arm body (10) is connected to the hinge seat C (11) at the axial front end, and the other end is connected to the hinge seat D (31) fixedly connected to the axial front end of the inner telescopic arm body (30), so that the inner telescopic Arm (3) shrinks synchronously with middle telescopic arm (2). 2. The telescoping mechanism according to claim 1, characterized in that, the hinge seat A (12), the second reversing wheel (22) and the hinge seat B (32) are in sequence from the rear end to the front end in the axial direction set up. 3. The telescopic mechanism according to claim 2, characterized in that, the hinge seat B (32), hinge seat C (11), first reversing wheel (21) and hinge seat D (31) are axially Set in order from the tail end to the front end. 4. The telescopic mechanism according to claim 1, characterized in that, the inner telescopic arm (3) is arranged radially outside the material conveying pipe for conveying and spraying concrete. 5. The telescopic mechanism according to any one of claims 1 to 4, characterized in that the basic arm body (10) has a first guide groove (13) radially inside, and the middle telescopic arm body (20) diameter There is a first slide block (23) outward, so that when the middle telescopic arm moves relative to the basic arm, the first slide block slides axially forward and backward in the first guide groove. 6. The telescopic mechanism according to claim 5, characterized in that the middle telescopic arm body (20) has a second guide groove (24) radially inside, and the inner telescopic arm body (30) has a second slider radially outside (33), so that when the inner telescopic arm moves relative to the middle telescopic arm, the second sliding block slides axially forward and backward in the second guide groove. 7. The telescopic mechanism according to any one of claims 1-4, characterized in that, a partition (25) is provided inside the middle telescopic arm body (20) to separate the inner cavity thereof. 8. The telescoping mechanism according to any one of claims 1-4, wherein the reversing wheel is a pulley, and the chain rope is a steel wire rope. 9. The telescopic mechanism according to any one of claims 1-4, wherein the reversing wheel is a sprocket, and the chain rope is a chain. 10. A pre-cut groove injection device, comprising a telescopic mechanism as described in any one of claims 1 to 9, a material delivery pipe arranged on the radially inner side of the inner telescopic arm body (30) and a material delivery pipe connected to one end of the length of the material delivery pipe. reel device.