CN111287226B

CN111287226B - A quick interfacing apparatus that is used for pile foundation quality detection pipe of large-scale bridge engineering

Info

Publication number: CN111287226B
Application number: CN202010112758.XA
Authority: CN
Inventors: 宗仁君
Original assignee: Sichuan Daocheng Construction Engineering Testing Co ltd
Current assignee: Sichuan Daocheng Construction Engineering Testing Co ltd
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2021-09-10
Anticipated expiration: 2040-02-24
Also published as: CN111287226A

Abstract

The invention relates to a quick butt joint device for pile foundation detection pipes of large-scale bridge engineering, which belongs to the technical field of pile foundation quality detection and comprises a sleeve, wherein the bottom of the sleeve is in threaded connection with a screw cap; the side wall of at least one fixed block, which is close to the suspension rod, is provided with a sliding chute, a sliding block is arranged in the sliding chute in a sliding mode, the sliding block is fixedly connected with the suspension rod, and fixing components used for limiting the position of the sliding block are arranged on the fixed block and the sliding block. During the use, install the sleeve pipe earlier in the steel reinforcement cage, the position of slider slides to make second couple just can articulate on the stirrup, then make the slider position inject through fixed subassembly again, guarantee the stability of sleeve pipe position, improve the butt joint quality.

Description

A quick interfacing apparatus that is used for pile foundation quality detection pipe of large-scale bridge engineering

Technical Field

The invention relates to the technical field of pile foundation quality detection, in particular to a quick butt joint device for a pile foundation quality detection pipe of a large-scale bridge engineering.

Background

At present, when a bridge pile foundation is poured, a quality detection pipe needs to be installed in a reinforcement cage of a pile foundation framework. The existing bridge pile foundation framework is formed by welding a plurality of sections of reinforcement cages, each section of reinforcement cage is bound with four quality detection pipes by using iron wires, after butt welding of the upper section of reinforcement cage and the lower section of reinforcement cage is completed, the iron wires used for binding the quality detection pipes by the upper section of reinforcement cage are removed, the upper section of detection pipe moves downwards and is in butt joint with the lower section of detection pipe, then the detection pipes are welded together, and the upper section of detection pipe needs to be bound on the reinforcement cage again.

Chinese patent No. CN204343343U discloses a positioning and quick-connecting device for pile foundation quality detecting pipe, which is composed of a casing pipe and a cock, wherein the casing pipe is made of plastic, one side of the casing pipe is open, at least two hooks are arranged right opposite to the outer side of the open casing pipe, the detecting pipe is arranged in the casing pipe, the lower end of the detecting pipe is supported by the cock, and the hooks are hung on the inner side of a reinforcement cage. When the device is used, the detection pipe is arranged in the sleeve, after the butt welding of the upper and lower sections of reinforcement cages is completed, the cock is opened, the detection pipe falls down along the sleeve, and then the detection pipe is in butt joint; and when the next section of the detection pipe is welded, the device is drawn away.

The prior art scheme among the above-mentioned has following defect, and two couples are directly hung on the stirrup of steel reinforcement cage, and because during actual construction, the interval between two adjacent stirrups is difficult to guarantee the same, leads to when in-service use, and another couple can not hang on the stirrup for the sleeve pipe rocks easily, influences the butt joint quality.

Disclosure of Invention

The invention aims to provide a quick butt joint device for a pile foundation quality detection pipe of a large-scale bridge engineering, which has the advantage of improving the butt joint quality.

The technical purpose of the invention is realized by the following technical scheme:

a quick butt joint device for pile foundation detection pipes of large-scale bridge engineering comprises a sleeve, wherein a screw cap is connected to the bottom of the sleeve in a threaded manner, two suspension rods are arranged on the sleeve, a suspension assembly is fixedly arranged on each suspension rod and comprises a fixed block and a hook, the fixed block is arranged at one end, far away from the sleeve, of each suspension rod, and the hook is fixedly arranged on the fixed block;

the side wall of at least one fixed block, which is close to the suspension rod, is provided with a sliding groove in the vertical direction, a sliding block is arranged in the sliding groove in a sliding mode, the sliding block is fixedly connected with the suspension rod, and fixing assemblies used for limiting the position of the sliding block are arranged on the fixed block and the sliding block.

Through adopting above-mentioned technical scheme, during the use, install the sleeve pipe in the steel reinforcement cage earlier, make the couple articulate on the stirrup of steel reinforcement cage, if another couple that hangs correspondence on the pole can not articulate on the stirrup when, remove the injecing of fixed subassembly to the slider this moment, the position of sliding block, so that second couple just can articulate on the stirrup, then make the slider position injecing through fixed subassembly again, guarantee the stability of sleeve pipe position, prevent effectively that the sleeve pipe from rocking, stability when improving the test tube butt joint, improve the butt joint quality.

The present invention in a preferred example may be further configured to: the sliding groove is a dovetail groove, and the sliding block is a dovetail block matched with the dovetail groove.

Through adopting above-mentioned technical scheme, dovetail and forked tail piece cooperation play and prevent that the slider from breaking away from the spout along the direction of perpendicular to spout, guarantee to hang the stability of pole position.

The present invention in a preferred example may be further configured to: the fixed subassembly includes rack and fixed pin, the rack is fixed to be set up on the diapire of spout along the length direction of spout, set up the fixed orifices that runs through to the rack along the direction of perpendicular to spout on the slider, the fixed pin slides and wears to locate in the fixed orifices.

Through adopting above-mentioned technical scheme, treat that the slider position control back is good, insert the fixed pin to in making the fixed pin insert the tooth's socket of rack, and then realize the purpose of injecing the slider position, easy operation is convenient.

The present invention in a preferred example may be further configured to: and the sliding block is provided with an elastic piece for driving the fixing pin to be inserted into the rack.

Through adopting above-mentioned technical scheme, the setting of elastic component orders about the fixed pin and keeps inserting the state of rack, prevents that the fixed pin from breaking away from the rack easily, guarantees the stability of slider position.

The present invention in a preferred example may be further configured to: the sleeve is fixedly arranged on the mounting rod, and four sleeves are uniformly arranged on the mounting rod at intervals in the circumferential direction; the suspension rod comprises a fixed rod and a sliding rod, the fixed rod is fixedly arranged on the sleeve, the sliding rod penetrates through the fixed rod in a sliding mode, and a limiting part used for limiting the position of the sliding rod is arranged on the fixed rod.

By adopting the technical scheme, when in use, the mounting rod and the four sleeves are inserted into the reinforcement cage, and then the sliding rod is stretched to prolong the length of the hanging rod, so that the hook can be hung on the stirrup; after the sleeve is used, the limit of the limiting piece is removed, the length of the hanging rod is shortened, so that the hook moves towards the middle of the steel reinforcement cage, and then the mounting rod is lifted upwards, so that the sleeve can be taken out; four sleeve pipes make four detection pipes can install the butt joint in step, improve butt joint efficiency greatly.

The present invention in a preferred example may be further configured to: the fixing device is characterized in that a sliding groove is formed in the fixing rod along the length direction of the fixing rod, the sliding rod is arranged in the sliding groove in a sliding mode, a mounting hole is formed in the side wall of the fixing rod, the limiting part is a limiting bolt which is arranged in the mounting hole in a penetrating mode in a rotating mode, and a threaded hole used for being in threaded connection with the limiting bolt is formed in the side wall of the sliding rod.

Through adopting above-mentioned technical scheme, wait to detect the pipe butt joint and accomplish the back, need lift the sleeve pipe this moment, rotate earlier spacing bolt to make spacing bolt break away from the screw hole, then promote the slide bar, in order to shorten the length of hanging the pole, avoid couple and stirrup to interfere, be convenient for take out the sleeve from steel reinforcement cage top is whole.

The present invention in a preferred example may be further configured to: the slide bar is provided with in the sliding tray and is used for driving about the extension spring of slide bar to being close to the motion of installation pole direction, the one end of extension spring and the diapire fixed connection in spout groove, the other end and slide bar fixed connection.

Through adopting above-mentioned technical scheme, when rotating spacing bolt to make spacing bolt break away from the screw hole after, the slide bar slides to the dead lever automatically under the effect of extension spring, realizes shortening the purpose of hanging rod length, convenient operation.

The present invention in a preferred example may be further configured to: the fixed mounting panel that is provided with of one end that the couple was kept away from to the fixed block, it perforates to have seted up in the mounting panel, it wears to be equipped with the spacer pin to slide in perforating, the spacer pin is close to the fixed piece that is provided with of one end of couple, be provided with on the spacer pin and be used for ordering about the spacer pin to the driving piece of the direction motion near the couple.

By adopting the technical scheme, the absolute level of the stirrup is difficult to ensure, so that the hook can be shifted due to the fact that the hook is directly hung on the stirrup; and treat that the couple articulates the back on the stirrup, the driving piece orders about the spacer pin to the direction motion of being close to the couple to make butt joint piece and stirrup support tightly, and then play the purpose of injecing the couple position, prevent that the couple from shifting on the stirrup, guarantee the stability of sleeve pipe and test tube position, improve the accuracy nature of test tube butt joint.

The present invention in a preferred example may be further configured to: a pull rod is fixedly arranged at one end, far away from the hook, of the limiting pin along the axial direction of the limiting pin, the diameter of the pull rod is smaller than that of the limiting pin, an installation block is fixedly arranged on the side wall, far away from the hook, of the installation plate, a through hole penetrating through the installation block is formed in the installation block, and the pull rod penetrates through the through hole in a sliding manner; the driving piece is a pressure spring sleeved on the pull rod, one end of the pressure spring is abutted against the mounting block, and the other end of the pressure spring is abutted against the limiting pin.

Through adopting above-mentioned technical scheme, the elasticity of pressure spring orders about the pull rod to the direction motion of being close to the couple, and the pull rod drives spacer pin upward movement for the stirrup that butt piece and couple articulate supports tightly, and then realizes injecing the purpose of couple position.

The present invention in a preferred example may be further configured to: the inner wall of the through hole is provided with a guide groove along the axial direction of the through hole, and the pull rod is fixedly provided with a guide block connected with the guide groove in a sliding manner.

Through adopting above-mentioned technical scheme, when treating that the sleeve pipe needs to be dismantled, outside pulling pull rod to make the guide block break away from the guide way completely, rotate the pull rod this moment, so that guide block and guide way dislocation, loosen the pull rod, guide block and installation piece butt prevent the pull rod upward movement under the effect of pressure spring, make and leave sufficient clearance between butt piece and the stirrup, be convenient for take out the couple smoothly, easy operation is convenient.

In summary, the invention includes at least one of the following beneficial effects:

when the device is used, the sleeve is firstly installed in the steel reinforcement cage, so that the hook is hung on a stirrup of the steel reinforcement cage, if the corresponding hook on the other suspension rod cannot be hung on the stirrup, the limitation of the fixing component on the sliding block is removed, the position of the sliding block is slid, so that the second hook can be just hung on the stirrup, then the position of the sliding block is limited through the fixing component, the stability of the position of the sleeve is ensured, the sleeve is effectively prevented from shaking, the stability of the detection tube during butt joint is improved, and the butt joint quality is improved;

when the hanging hook is used, the mounting rod and the four sleeves are inserted into the reinforcement cage, and then the sliding rod is stretched to prolong the length of the hanging rod so that the hanging hook can be hung on the stirrup; after the sleeve is used, the limit of the limiting piece is removed, the length of the hanging rod is shortened, so that the hook moves towards the middle of the steel reinforcement cage, and then the mounting rod is lifted upwards, so that the sleeve can be taken out; the four sleeves enable four detection tubes to be synchronously installed and butted, so that the butting efficiency is greatly improved;

when the hanger is used, the mounting rod and the four sleeves are inserted into the reinforcement cage, and then the sliding rod is stretched to prolong the length of the hanging rod so that the hook can be hung on the stirrup; after the sleeve is used, the limit of the limiting piece is removed, the length of the hanging rod is shortened, so that the hook moves towards the middle of the steel reinforcement cage, and then the mounting rod is lifted upwards, so that the sleeve can be taken out; four sleeve pipes make four detection pipes can install the butt joint in step, improve butt joint efficiency greatly.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is a schematic diagram of a portion of the structure of the present invention;

fig. 3 is an exploded view of the present invention.

Reference numerals: 1. a sleeve; 11. screwing a cover; 2. a suspension rod; 21. fixing the rod; 211. mounting holes; 2111. a limit bolt; 212. a tension spring; 22. a slide bar; 221. a threaded hole; 3. a suspension assembly; 31. a fixed block; 311. a chute; 312. a slider; 3121. a fixing hole; 32. hooking; 41. a rack; 42. a fixing pin; 421. an elastic member; 422. a boss; 5. mounting a rod; 6. mounting a plate; 61. perforating; 62. mounting blocks; 621. a through hole; 6211. a guide groove; 7. a spacing pin; 71. abutting the sheet; 72. a pull rod; 721. a pressure spring; 722. a guide block; 723. a handheld station.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in figure 1, the quick butt joint device for the pile foundation detection pipe of the large-scale bridge engineering comprises an installation rod 5 and sleeves 1, wherein the sleeves 1 are fixedly arranged on the installation rod 5, and the four sleeves 1 are uniformly arranged at intervals in the circumferential direction of the installation rod 5. The bottom of the sleeve 1 is connected with a screw cap 11 in a threaded manner, and the screw cap 11 is sleeved on the sleeve 1 in a threaded manner. Two suspension rods 2 are arranged on the casing 1, and the two suspension rods 2 are distributed along the axial direction of the casing 1.

As shown in fig. 1 and 2, the suspension rod 2 is fixedly provided with a suspension assembly 3, the suspension assembly 3 includes a fixing block 31 and a hook 32, the fixing block 31 is disposed at one end of the suspension rod 2 far away from the casing 1, and the hook 32 is fixedly disposed on the fixing block 31.

As shown in fig. 2, a sliding groove 311 is formed in the side wall of the at least one fixing block 31 close to the suspension rod 2 along the vertical direction, a sliding block 312 is slidably disposed in the sliding groove 311, the sliding groove 311 is a dovetail groove, the sliding block 312 is a dovetail block matched with the dovetail groove, and the sliding block 312 is fixedly connected with the suspension rod 2.

As shown in fig. 2, a fixing assembly for defining the position of the slider 312 is provided on the fixing block 31 and the slider 312, and the fixing assembly includes a rack 41 and a fixing pin 42. The rack 41 is fixedly disposed on the bottom wall of the sliding slot 311 along the length direction of the sliding slot 311, a fixing hole 3121 penetrating through the rack 41 is disposed on the slider 312 along a direction perpendicular to the sliding slot 311, and the fixing pin 42 is slidably disposed in the fixing hole 3121.

As shown in fig. 2, the sliding block 312 is provided with an elastic member 421 for driving the fixing pin 42 to be inserted into the rack 41, the elastic member 421 is a spring, and one end of the fixing pin 42 away from the sliding block 312 is fixedly provided with a boss 422; the spring is sleeved on the fixing pin 42, one end of the spring is fixedly connected with the boss 422, and the other end of the spring is fixedly connected with the side wall of the sliding block 312. The elastic member 421 is configured to drive the fixing pin 42 to keep the state of being inserted into the rack 41, so as to prevent the fixing pin 42 from easily separating from the rack 41, and ensure the stability of the position of the slider 312.

As shown in fig. 1 and 2, the suspension rod 2 includes a fixing rod 21 and a sliding rod 22, the fixing rod 21 is fixedly disposed on the casing 1, the fixing rod 21 is perpendicular to the casing 1, and the sliding rod 22 is slidably disposed in the fixing rod 21. A sliding groove is formed in the fixing rod 21 along the length direction of the fixing rod 21, the sliding rod 22 is slidably disposed in the sliding groove, and a mounting hole 211 is formed in the side wall of the fixing rod 21. The fixing rod 21 is provided with a limiting member for limiting the position of the sliding rod 22, the limiting member is a limiting bolt 2111 rotatably inserted into the mounting hole 211, and a threaded hole 221 for connecting the limiting bolt 2111 with a thread is formed in the side wall of the sliding rod 22.

When in use, the mounting rod 5 and the four sleeves 1 are inserted into the reinforcement cage, and then the sliding rod 22 is stretched to prolong the length of the suspension rod 2, so that the hook 32 can be hung on a stirrup; after the use is finished, the limitation of the threads of the limiting bolt 2111 is removed, the length of the suspension rod 2 is shortened, so that the hook 32 moves towards the middle part of the reinforcement cage, and then the mounting rod 5 is lifted upwards, so that the sleeve 1 can be taken out; four sleeve pipes 1 make four detection pipes can install the butt joint in step, improve butt joint efficiency greatly. After the pipe to be detected is butted, the sleeve 1 needs to be dismounted, the limiting bolt 2111 is rotated firstly, so that the limiting bolt 2111 is separated from the threaded hole 221, and then the sliding rod 22 is pushed, so that the length of the suspension rod 2 is shortened, the interference between the hook 32 and the stirrup is avoided, and the sleeve can be conveniently and integrally taken out from the upper part of the steel reinforcement cage.

As shown in fig. 2, a tension spring 212 for driving the sliding rod 22 to move toward the direction close to the mounting rod 5 is disposed in the sliding groove, one end of the tension spring 212 is fixedly connected to the bottom wall of the sliding groove 311, and the other end is fixedly connected to the sliding rod 22. When the limiting bolt 2111 is rotated to separate the limiting bolt 2111 from the threaded hole 221, the sliding rod 22 automatically slides towards the fixing rod 21 under the action of the tension spring 212, so that the purpose of shortening the length of the suspension rod 2 is achieved, and the operation is convenient.

As shown in fig. 3, a mounting plate 6 is fixedly disposed at one end of the fixing block 31, which is far away from the hook 32, the fixing block 31 is located right below the hook 32, a through hole 61 is formed in the mounting plate 6, and a limit pin 7 is slidably disposed in the through hole 61 in a penetrating manner. One end of the limit pin 7 close to the hook 32 is fixedly provided with a butting piece 71, and the butting piece 71 can be made of iron, rubber or wood.

As shown in fig. 3, a pull rod 72 is fixedly arranged at one end of the limit pin 7 far away from the hook 32 along the axial direction of the limit pin 7, and the diameter of the pull rod 72 is smaller than that of the limit pin 7; the side wall of the mounting plate 6 far away from the hook 32 is fixedly provided with a mounting block 62, a through hole 621 penetrating through the through hole 61 is formed in the mounting block 62, and the pull rod 72 penetrates through the through hole 621 in a sliding manner. The limiting pin 7 is provided with a driving element for driving the limiting pin 7 to move towards the direction close to the hook 32, the driving element is a pressure spring 721 sleeved on the pull rod 72, one end of the pressure spring 721 is abutted with the mounting block 62, and the other end of the pressure spring is abutted with the limiting pin 7.

Since the stirrups on the reinforcement cage are difficult to ensure absolute level, the hooks 32 may be shifted due to the hooks 32 being directly hung on the stirrups. And treat that couple 32 articulates on the stirrup after, the elasticity of pressure spring 721 orders about the spacer pin 7 to the direction motion that is close to couple 32 to make butt piece 71 support tightly with the stirrup, and then play the purpose of injecing couple 32 position, prevent that couple 32 from shifting on the stirrup, guarantee the stability of sleeve pipe 1 and test tube position, improve the accuracy nature that the test tube docked.

In addition, as shown in fig. 3, a guide groove 6211 is formed in the inner wall of the through hole 621 along the axial direction of the through hole 621, a guide block 722 slidably connected with the guide groove 6211 is fixedly disposed on the pull rod 72, and a handheld platform 723 is fixedly disposed at one end of the pull rod 72 extending out of the through hole 621.

When the sleeve 1 needs to be disassembled, the pull rod 72 is pulled outwards to enable the guide block 722 to be completely separated from the guide groove 6211, the pull rod 72 is rotated to enable the guide block 722 to be dislocated with the guide groove 6211, the pull rod 72 is loosened, the guide block 722 is abutted with the mounting block 62 under the action of the pressure spring 721, the pull rod 72 is prevented from moving upwards, a sufficient gap is reserved between the abutting piece 71 and the stirrup, the hook 32 is convenient to take out smoothly, and the operation is simple and convenient.

The implementation principle is as follows: when the hanger is used, the sleeve 1 is firstly installed in the reinforcement cage, the hook 32 is hung on a stirrup of the reinforcement cage, and if the corresponding hook 32 on the other suspension rod 2 cannot be hung on the stirrup, the fixing pin 42 is pulled out outwards at the moment so that the fixing pin 42 is separated from the rack 41, and the limitation on the sliding block 312 is removed. The position of sliding block 312 to make second couple 32 just can articulate on the stirrup, then insert fixed pin 42 again, so that fixed pin 42 inserts in the tooth's socket of rack 41, guarantee the stability of sleeve pipe 1 position, prevent effectively that sleeve pipe 1 from rocking, stability when improving the test tube butt joint improves the butt joint quality.

After the sleeve pipe 1 is installed, the detection pipe is inserted into the sleeve pipe 1, the screw cap 11 is unscrewed, the detection pipe moves downwards along the sleeve pipe 1 until the detection pipe is abutted to the detection pipe on the lower layer, the butt joint of the detection pipe is completed, the butt joint quality is improved, and the operation is convenient.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a quick interfacing apparatus for large bridge engineering's pile foundation quality detection pipe, includes sleeve pipe (1), the bottom threaded connection of sleeve pipe (1) has spiral cover (11), its characterized in that: the hanging sleeve is characterized in that two hanging rods (2) are arranged on the sleeve (1), a hanging assembly (3) is fixedly arranged on each hanging rod (2), each hanging assembly (3) comprises a fixing block (31) and a hook (32), the fixing block (31) is arranged at one end, far away from the sleeve (1), of each hanging rod (2), and the hook (32) is fixedly arranged on the fixing block (31);

the side wall, close to the suspension rod (2), of at least one fixed block (31) is provided with a sliding groove (311) in the vertical direction, a sliding block (312) is arranged in the sliding groove (311) in a sliding mode, the sliding block (312) is fixedly connected with the suspension rod (2), and fixing assemblies used for limiting the position of the sliding block (312) are arranged on the fixed block (31) and the sliding block (312); a mounting plate (6) is fixedly arranged at one end, far away from the hook (32), of the fixing block (31), a through hole (61) is formed in the mounting plate (6), a limiting pin (7) penetrates through the through hole (61) in a sliding manner, a butting piece (71) is fixedly arranged at one end, close to the hook (32), of the limiting pin (7), and a driving piece used for driving the limiting pin (7) to move towards the direction close to the hook (32) is arranged on the limiting pin (7); a pull rod (72) is fixedly arranged at one end, far away from the hook (32), of the limiting pin (7) along the axial direction of the limiting pin (7), the diameter of the pull rod (72) is smaller than that of the limiting pin (7), an installation block (62) is fixedly arranged on the side wall, far away from the hook (32), of the installation plate (6), a through hole (621) penetrating through the through hole (61) is formed in the installation block (62), and the pull rod (72) penetrates through the through hole (621) in a sliding mode; the driving piece is a pressure spring (721) sleeved on the pull rod (72), one end of the pressure spring (721) is abutted against the mounting block (62), and the other end of the pressure spring is abutted against the limiting pin (7).

2. The fast butt joint device for the pile foundation quality detection pipe of the large bridge engineering according to claim 1, wherein: the sliding groove (311) is arranged to be a dovetail groove, and the sliding block (312) is arranged to be a dovetail block matched with the dovetail groove.

3. The fast butt joint device for the pile foundation quality detection pipe of the large bridge engineering according to claim 2, wherein: the fixed subassembly includes rack (41) and fixed pin (42), rack (41) are fixed to be set up on the diapire of spout (311) along the length direction of spout (311), fixed orifices (3121) that run through to rack (41) are seted up along the direction of perpendicular to spout (311) on slider (312), fixed pin (42) slide and wear to locate in fixed orifices (3121).

4. The fast butt joint device for the pile foundation quality detection pipe of the large bridge engineering according to claim 3, wherein: the sliding block (312) is provided with an elastic piece (421) used for driving the fixing pin (42) to be inserted into the rack (41).

5. The fast butt joint device for the pile foundation quality detection pipe of the large-scale bridge engineering according to claim 1 or 4, wherein: the device is characterized by also comprising an installation rod (5), wherein the sleeves (1) are fixedly arranged on the installation rod (5), and four sleeves (1) are uniformly arranged at intervals in the circumferential direction of the installation rod (5); the hanging rod (2) comprises a fixing rod (21) and a sliding rod (22), the fixing rod (21) is fixedly arranged on the sleeve (1), the sliding rod (22) penetrates through the fixing rod (21) in a sliding mode, and a limiting part used for limiting the position of the sliding rod (22) is arranged on the fixing rod (21).

6. The fast butt joint device for the pile foundation quality detection pipe of the large bridge engineering according to claim 5, wherein: the utility model discloses a fixing device for fixing a car seat, including dead lever (21), dead lever (21) is interior to have seted up the sliding tray along the length direction of dead lever (21), slide bar (22) slide and set up in the sliding tray, mounting hole (211) have been seted up to the lateral wall of dead lever (21), spacing bolt (2111) in locating part for rotating to wear to locate mounting hole (211), screw hole (221) that are used for with spacing bolt (2111) threaded connection are seted up to the lateral wall of slide bar (22).

7. The fast butt joint device for the pile foundation quality detection pipe of the large-scale bridge engineering according to claim 6, wherein: the slide groove is internally provided with a tension spring (212) which is used for driving the slide rod (22) to move towards the direction close to the installation rod (5), one end of the tension spring (212) is fixedly connected with the bottom wall of the groove of the slide groove (311), and the other end of the tension spring is fixedly connected with the slide rod (22).

8. The fast butt joint device for the pile foundation quality detection pipe of the large bridge engineering according to claim 1, wherein: a guide groove (6211) is formed in the inner wall of the through hole (621) along the axial direction of the through hole (621), and a guide block (722) connected with the guide groove (6211) in a sliding mode is fixedly arranged on the pull rod (72).