CN110630814A

CN110630814A - Power device for jacking pipe

Info

Publication number: CN110630814A
Application number: CN201810644693.6A
Authority: CN
Inventors: 雷奇灵; 毛家平; 余卫; 雷俊清; 郑蕊
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-06-21
Filing date: 2018-06-21
Publication date: 2019-12-31

Abstract

A power device for pipe jacking comprises a movable trolley, wherein a lifting support is arranged on the movable trolley, a jack is mounted at the top end of the lifting support, and the jack is connected with a pipe jacking mechanism; the lifting support is a fork frame, the fork frame is arranged in front and back, the left and right lower ends of the front fork frame and the back fork frame are connected with a first sliding block, and the first sliding block is arranged on a track of the mobile trolley in a sliding manner and is relatively close to or far from the mobile trolley through a screw rod; a single support rod at the upper ends of the front fork frame and the rear fork frame is arranged on a connecting rod in a sliding mode through a second sliding block, and the connecting rod is fixed with the jack through a hoop; the jacking pipe mechanism comprises a rotary jacking frame and a positioning support frame which are arranged on a telescopic rod at the front end of the jack, wherein the rotary jacking frame pushes the end face of a jacking pipe, and the positioning support frame extends into the jacking pipe to tightly jack and position the inner wall of the jacking pipe. According to the power device for pipe jacking, the positioning pipe jacking mechanism is arranged, so that the working efficiency of pipe jacking construction can be improved.

Description

Power device for jacking pipe

Technical Field

The invention relates to a device for laying pipelines in municipal engineering, in particular to a power device for jacking pipes.

Background

At present, in municipal engineering, the process of laying underground pipelines adopts a pipe jacking process, namely, a pipeline 12 is jacked into a pre-dug hole channel 13, as shown in figure 1. When the pipe is pushed, a jack is adopted for implementation, the rear end of the jack is fixed on the support, the front end, namely the telescopic end, is propped against the end face of the pipeline, and then the jack is started to push the pipeline to move forwards. It has the problems that: the pipeline is easy to deviate, and is propped against the wall of the pore channel in the advancing process, so that the pipeline is blocked and the pipeline laying cannot be completed quickly and smoothly; and the problem of low butt joint quality of the two pipelines can also exist even if the two pipelines are not clamped.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a power device for a jacking pipe, which can prevent the pipes from deviating in the advancing process, thereby preventing the pipes from being blocked, and can also improve the butt joint coaxiality of the two pipes and the butt joint quality.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a power device for pipe jacking comprises a movable trolley, wherein a lifting support is arranged on the movable trolley, a jack is mounted at the top end of the lifting support, and the jack is connected with a pipe jacking mechanism; the lifting support comprises support rods, the two support rods are mutually crossed and hinged to form a fork frame, the fork frame is arranged in front and at back, the left and right lower ends of the front fork frame and the back fork frame are connected with a first sliding block, and the first sliding block is arranged on a track of the mobile trolley in a sliding mode and is relatively close to or far from the track through a screw rod; a single support rod at the upper ends of the front fork frame and the rear fork frame is arranged on a connecting rod in a sliding mode through a second sliding block, and the connecting rod is fixed with the jack through a hoop; the jacking pipe mechanism comprises a rotary jacking frame and a positioning support frame which are arranged on a telescopic rod at the front end of the jack, wherein the rotary jacking frame pushes the end face of a jacking pipe, and the positioning support frame extends into the jacking pipe to tightly jack and position the inner wall of the jacking pipe.

The middle of the lower end of the movable trolley is provided with a rotating shaft, two ends of the rotating shaft are connected with rollers, the front end of the corresponding movable trolley is hinged with a supporting leg, the lower end of the supporting leg is provided with a fixed disc, and a threaded hole is drilled in the fixed disc.

The rotary top frame comprises a rotary table, a connecting rod is circumferentially arranged on the rotary table, the length of the connecting rod is matched with the radius of the jacking pipe, and a top block is vertically arranged at the end of the connecting rod.

The positioning support frame comprises an adjusting frame, a threaded sleeve is arranged on one end face of the adjusting frame and in threaded connection with the jack, a plurality of threaded holes are circumferentially formed in the adjusting frame, and one end of the ejector rod is screwed into the threaded holes while the other end of the ejector rod is connected with the arc-shaped plate.

Two sections of threads with opposite spiral directions are arranged on the screw rod and are respectively in threaded connection with the two first sliding blocks.

The invention relates to a power device for a jacking pipe, which has the following technical effects:

1) through setting up travelling car, can conveniently promote the removal, and the later stage also can fix, makes things convenient for the push pipe.

2) Through setting up lifting support, can conveniently improve application range in some high-order hole way operations, and can cooperate with the location support frame, adjust and cooperate lifting support's altitude mixture control through the location support frame radial positioning to make the telescopic link axis of jack the same with the axis of push pipe, the point of application of force is located the push pipe center like this, avoids the push pipe card that leads to because of the application of force skew to die.

3) Through setting up rotatable rotatory roof-rack, can be rotatory at the in-process that promotes the push pipe pore entering, adjust the application of force point, realize jack center application of force + rotatory roof-rack circumference change application of force for the push pipe gets into the pore fast, improves municipal construction efficiency.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left side view of the present invention.

Fig. 3 is a schematic structural view of the rotating top frame of the present invention.

Fig. 4 is a schematic structural view of an adjusting bracket of the present invention.

Fig. 5 is a schematic structural view of the positioning support frame of the present invention.

Fig. 6 is a schematic structural view of the connecting rod of the present invention.

Fig. 7 is a schematic diagram of the operation of a conventional ejector pin tip-to-hole channel.

In the figure: the device comprises a movable trolley 1, a lifting support 2, a jack 3, a pipe jacking mechanism 4, a support rod 5, a first sliding block 6, a screw rod 7, a connecting rod 8, a hoop 9, a rotary top frame 10, a rotary table 10-1, a connecting rod 10-2, a top block 10-3, a positioning support frame 11, an adjusting frame 11-1, a threaded sleeve 11-2, a threaded hole 11-3, a top rod 11-4, an arc-shaped plate 11-5, a top pipe 12, a hole channel 13, a roller 14, a support leg 15, a fixed disc 16, a threaded hole 17 and a second sliding block 18.

Detailed Description

As shown in fig. 1-6, a power device for pipe jacking comprises a movable trolley 1, wherein a lifting support 2 is arranged on the movable trolley 1, a jack 3 is arranged at the top end of the lifting support 2, and the jack 3 is connected with a pipe jacking mechanism 4.

The movable trolley 1 comprises a supporting plate at the bottom, a pushing frame is arranged on one side of the supporting plate, a mounting seat is arranged on the lower portion of the middle of the bottom end face of the supporting plate, a bearing is arranged in the mounting seat, and a rotating shaft is mounted on the supporting plate through the bearing. The left and right sides of the rotating shaft are connected with rollers 14, so that the whole device is conveniently pushed to move. And the front end of the supporting plate is provided with a supporting leg 15 through a hinge or a pin shaft (in order to improve the stability, a pair of supporting legs can be arranged at the rear end), and when the supporting leg is vertical to the supporting plate, the lower bottom surface and the lowest point of the roller 14 are on the same horizontal plane. Therefore, the supporting legs 15 can be rotated, and are folded when the trolley moves, and the trolley is screwed out after being stopped and falls to the ground for fixed positioning. In addition, a fixed plate 16 is installed at the lower end of the supporting leg 15, a threaded hole 17 is drilled in the fixed plate 16, and when the supporting leg is required to be completely fixed, an expansion bolt can penetrate through the threaded hole 17 to be fixed on the ground, so that subsequent operation is facilitated.

The lifting support 2 comprises support rods 5, the two support rods 5 are mutually crossed and hinged to form a fork frame, and the fork frame is divided into a front group and a rear group. The supporting rods 5 at the left and right sides of the lower ends of the two groups of fork frames are respectively connected with a first sliding block 6, the first sliding blocks 6 of the first sliding blocks 6 are arranged on the supporting plate of the movable trolley 1 in a sliding mode, and the two first sliding blocks 6 are in threaded fit connection with a screw 7. Because the screw rod 7 is provided with two sections of threads with opposite turning directions, when the handles at the two ends of the screw rod 7 are rotated, the first sliding block 6 can be relatively close to or far away from each other. And a second slide block 18 is correspondingly arranged on the support rod 5 at the upper end of each group of fork frames, and the second slide block 18 consists of a ball part and a column part. The lower end surface of the corresponding connecting rod 8 is provided with a groove which is matched with the shape of the second sliding block 18, and the two ends are sealed and limited to prevent slipping. The upper end of the connecting rod 8 is provided with an anchor ear 9, and the connecting rod 8 is fixed with the jack 3 through the anchor ear 9. By rotating the screw 7, the fork is raised or lowered, thereby adjusting the lifting of the jack 3 at the upper end. The jack 3 can be a common electric jack.

The pipe jacking mechanism 4 comprises a rotary top frame 10 and a positioning support frame 11 which are arranged on an expansion rod at the front end of the jack 3. The rotary top frame 10 comprises a rotary table 10-1, and the rotary table 10-1 is connected with the telescopic rod of the jack 3 through a bearing, so that the rotary top frame can rotate circumferentially relative to the jack 3. Three connecting rods 10-2 are arranged in the circumferential direction of the rotary table 10-1, the length of the three connecting rods 10-2 is matched with the radius of the top pipe 12, and a top block 10-3 is vertically arranged at the end of each connecting rod 10-2. Thus, when the telescopic rod of the jack 3 extends out, the jacking block 10-3 can be jacked on the end surface of the top pipe 12, and the top pipe 12 is pushed forwards.

The positioning support frame 11 comprises an adjusting frame 11-1, a threaded sleeve 11-2 is arranged on one end face of the adjusting frame 11-1, the adjusting frame 11-1 is installed at the end of a telescopic rod of the jack 3 through the threaded sleeve 11-2, a plurality of threaded holes 11-3 are circumferentially formed in the adjusting frame 11-1, one end of a push rod 11-4 is screwed into the threaded hole 11-3, the other end of the push rod is connected with an arc-shaped plate 11-5, each push rod 11-4 consists of a threaded section and a smooth section, and length scales are marked on the smooth section along the length direction.

Before working, the ejector rod 11-4 of the positioning support frame 11 is screwed into the threaded hole 11-3 for a certain length in advance, and a gap is formed between the ejector rod 11-4 and the inner wall of the top pipe 12 after the ejector rod 11-4 extends into the top pipe 12; the leg 15 is rotated to rest on the screw 7 and the dolly 1 is pushed to move the device into position. The legs 15 are then lowered and the legs 15 may be secured by expansion bolts or other fasteners, thus securing the cart. The screw 7 is then rotated so that the first slide 6 is relatively close, thereby adjusting the lifting bracket 2 to the appropriate height. The jack 3 is operated to make the positioning support frame 11 extend into the top pipe 12. Then the ejector rods 11-4 are screwed out, so that the lengths of the threaded holes 11-3 extending out of each ejector rod 11-4 are the same, and in the process, the lifting support 2 is matched for lifting adjustment, and finally each arc-shaped plate 11-5 is abutted against the inner wall of the top pipe 12. Because the push rods 11-4 extend to the same length, the telescopic rods of the jack 3 and the push rods 12 are positioned on the same straight line. When the jack 3 extends out for operation, the jacking block 10-3 is jacked on the end face of the jacking pipe 12, the jacking pipe 12 is pushed into the duct 13, and due to the positioning of the positioning support frame 11, the force of the jack 3 acting on the jacking pipe 12 is the same, so that the jacking pipe can be effectively prevented from being clamped in an inclined mode, in addition, the jacking frame 10 can be rotated in the pushing process, the acting point of the thrust is changed, and the inclination can be reduced.

Claims

1. The utility model provides a power device for push pipe which characterized in that: the pipe jacking device comprises a movable trolley (1), wherein a lifting support (2) is arranged on the movable trolley (1), a jack (3) is installed at the top end of the lifting support (2), and the jack (3) is connected with a pipe jacking mechanism (4); the lifting support (2) comprises support rods (5), the two support rods (5) are mutually crossed and hinged to form a fork frame, the fork frame is arranged front and back, the left and right ends of the lower end of the front fork frame and the lower end of the rear fork frame are connected with a first sliding block (6), the first sliding block (6) is arranged on a track of the movable trolley (1) in a sliding mode and is relatively close to or far from the movable trolley through a screw (7) for adjustment; the single supporting rod (5) at the upper ends of the front fork frame and the rear fork frame are arranged on the connecting rod (8) in a sliding mode through the second sliding block (18), and the connecting rod (8) is fixed with the jack (3) through the hoop (9); the pipe jacking mechanism (4) comprises a rotary jacking frame (10) and a positioning support frame (11) which are arranged on a telescopic rod at the front end of the jack (3), wherein the rotary jacking frame (10) pushes the end face of the jacking pipe (12), and the positioning support frame (11) stretches into the jacking pipe (12) to jack the inner wall of the jacking pipe (12) tightly.

2. The power device for jacking pipes as claimed in claim 1, wherein: the middle of the lower end of the movable trolley (1) is provided with a rotating shaft, the two ends of the rotating shaft are connected with rollers (14), the front end of the corresponding movable trolley (1) is hinged with supporting legs (15), the lower ends of the supporting legs (15) are provided with fixed discs (16), and threaded holes (17) are drilled in the fixed discs (16).

3. The power device for jacking pipes as claimed in claim 1, wherein: the rotary top frame (10) comprises a rotary table (10-1), a connecting rod (10-2) is arranged on the periphery of the rotary table (10-1), the length of the connecting rod (10-2) is matched with the radius of the top pipe (12), and a top block (10-3) is vertically arranged at the end of the connecting rod (10-2).

4. The power device for jacking pipes as claimed in claim 1, wherein: the positioning support frame (11) comprises an adjusting frame (11-1), a threaded sleeve (11-2) is arranged on one end face of the adjusting frame (11-1), the threaded sleeve (11-2) is in threaded connection with the jack (3), a plurality of threaded holes (11-3) are formed in the adjusting frame (11-1) in the circumferential direction, one end of a push rod (11-4) is screwed into the threaded holes (11-3), and the other end of the push rod is connected with the arc-shaped plate (11-5).

5. The power device for jacking pipes as claimed in claim 1, wherein: two sections of threads with opposite spiral directions are arranged on the screw rod (7), and the two sections of threads are respectively in threaded connection with the two first sliding blocks (6).