CN218875336U

CN218875336U - Pipeline screwing device

Info

Publication number: CN218875336U
Application number: CN202223548690.3U
Authority: CN
Inventors: 李连森; 李政锴; 刘清平
Original assignee: Henan Yongzhenghe Engineering Technology Co ltd
Current assignee: Henan Yongzhenghe Engineering Technology Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-04-18
Anticipated expiration: 2032-12-28

Abstract

The utility model provides a pipeline device of screwing belongs to fire-fighting pipeline construction technical field. Comprises a main handle and an auxiliary handle which are mutually hinged by a shaft rod; a motor in transmission connection with the shaft lever is fixedly arranged in the main handle; a connecting cylinder fixedly connected with the end part of the main handle is coaxially arranged along the shaft lever direction; the two ends of the connecting cylinder are both fixedly provided with first clamping jaws, and the end part of the auxiliary handle is fixedly provided with second clamping jaws; the first clamping jaw and the second clamping jaw are oppositely arranged, the first clamping jaw is bent from the middle part to one side of the second clamping jaw, and the second clamping jaw is bent from the middle part to one side of the first clamping jaw; the first clamping jaw is internally provided with a first chain in transmission connection with the shaft rod, and the second clamping jaw is internally provided with a second chain in transmission connection with the shaft rod. The utility model discloses can be fit for screwing or unscrewing of the pipeline of multiple pipe diameter, manpower resources consumption that can greatly reduced improves work efficiency.

Description

Pipeline screwing device

Technical Field

The utility model belongs to the technical field of the fire-fighting pipeline construction, concretely relates to pipeline device of screwing.

Background

When the metal pipeline of the fire-fighting spraying system is installed, a pipe wrench is needed to rotate the pipeline or a pipeline joint, so that threaded connection between the pipelines is realized. However, a lot of manpower is consumed in the process, and particularly when the pipeline installed on the suspended ceiling is in butt joint, a worker needs to lift pipe tongs to perform screwing operation, so that the labor intensity is high, and the installation efficiency is low. Therefore, a device capable of automatically rotating the pipeline or the pipeline joint to realize pipeline connection is needed.

Through retrieval, no screwing device for the pipeline is found in the prior art.

In the prior art, there is a tightening device for small-diameter objects such as steel bars, for example, patent document CN114683201a proposes an open wrench for connecting steel bars and a sleeve, the wrench uses a rotor to clamp the steel bars and drive the steel bars to rotate, but the rotor is integrally of a gear structure and is provided with an opening for placing the steel bars along a radius direction; when the rotor is provided with an opening (the gear structure lacks part of continuous gear teeth), two intermediate gears matched with the rotor must be arranged at intervals to drive the rotor to rotate continuously, and the two intermediate gears are also connected with a driving gear together. The structure of the wrench cannot be applied to pipelines with larger diameters, because the rotor of the wrench needs to be amplified to adapt to the size of the pipeline, and each gear in transmission connection with the rotor needs to be amplified, otherwise, the rotation of the rotor is influenced by an opening on the rotor, but the whole weight of the wrench is greatly increased to influence the handholding.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that, to prior art not enough, provide a pipeline device of screwing.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a pipeline screwing device comprises a main handle and an auxiliary handle which are mutually hinged by a shaft lever;

a motor in transmission connection with the shaft lever is fixedly arranged in the main handle;

a connecting cylinder fixedly connected with the end part of the main handle is coaxially arranged along the shaft lever direction;

the two ends of the connecting cylinder are both fixedly provided with first clamping jaws, and the end part of the auxiliary handle is fixedly provided with second clamping jaws;

the first clamping jaw and the second clamping jaw are oppositely arranged, the first clamping jaw is bent from the middle part to one side of the second clamping jaw, and the second clamping jaw is bent from the middle part to one side of the first clamping jaw;

the first clamping jaw is internally provided with a first chain in transmission connection with the shaft rod, and the second clamping jaw is internally provided with a second chain in transmission connection with the shaft rod.

Furthermore, the end part, the middle part and the root part of the first clamping jaw are provided with first chain wheels matched with the first chains, and the first chain wheels positioned at the root part are fixedly connected with the shaft rod; and the end part, the middle part and the root part of the second clamping jaw are respectively provided with a second chain wheel matched with the second chain, and the second chain wheel positioned at the root part is fixedly connected with the shaft rod.

Furthermore, anti-skidding teeth are arranged on the outer side surfaces of the first chain and the second chain.

Furthermore, a ratchet wheel disc is fixedly arranged in the connecting cylinder, and a pawl matched with the ratchet wheel disc is fixedly arranged on the second clamping jaw.

Furthermore, a pull rope is arranged in the auxiliary handle, a toggle switch is arranged at the holding end of the auxiliary handle, one end of the pull rope is fixedly connected with the pawl, and the other end of the pull rope is fixedly connected with the toggle switch.

Further, the first chain and the second chain are both internally-guided toothed chains, and the first chain wheel and the second chain wheel are both internally-guided chain wheels.

Further, the central axes of the main handle and the auxiliary handle are coplanar.

Furthermore, a control switch for controlling the motor is arranged at the holding end of the main handle.

Furthermore, an output shaft of the motor is connected with a speed reducer, a driving gear is fixedly arranged on the output shaft of the speed reducer, and a driven gear matched with the driving gear is fixedly arranged on the shaft rod.

Further, the driving gear and the driven gear are both conical gears.

Compared with the prior art, the utility model discloses following beneficial effect has:

the main handle of the utility model is matched with the first clamping jaw, the auxiliary handle is matched with the second clamping jaw to form a pincer shape, and the first clamping jaw and the second clamping jaw are jaws; be provided with first chain in the first clamping jaw, be provided with the second chain in the second clamping jaw, when first clamping jaw and second clamping jaw centre gripping pipeline, first chain and second chain will tighten and butt the partial pipe wall of the relative both sides of pipeline, behind the starter motor, one side of first chain and pipeline contact and one side of second chain and pipeline contact will move to opposite direction respectively to drive the pipeline and rotate, accomplish screwing or unscrewing of pipeline. Therefore, the utility model discloses can be fit for screwing or unscrewing of the pipeline of multiple pipe diameter, and only need with the utility model discloses rotate 180, can realize screwing or unscrewing the switching of function.

The utility model discloses be provided with ratchet locking structure between vice handle and the main handle, when gripping main handle and vice handle, utilize first clamping jaw and second clamping jaw to press from both sides tight pipeline after, vice handle will be by ratchet structure automatic locking, can not be because of relaxing the tight state of clamp to the pipeline that can't be maintained gripping of vice handle. When needed, the locking state of the auxiliary handle can be released by using the toggle switch, and the clamping of the pipeline is released.

The utility model discloses an outside of first chain and second chain all is provided with anti-skidding tooth on the surface, sets up the frictional force that anti-skidding tooth can increase between chain and the pipeline, reduces the phenomenon of skidding.

The utility model realizes the control of the starting and stopping states of the motor by using the control switch, and can automatically adjust the rotating speed of the motor according to the pressing force; and control switch can also detect the operating current of motor, can automatic cutout motor's power when operating current is too big, can enough avoid excessively screwing the pipeline, also can avoid the motor to burn out because of the electric current is too big. The utility model discloses be provided with the speed reducer on the output shaft of motor, this speed reducer is planetary reduction mechanism, can reduce the output rotational speed of motor and improve output torque to the tight power of turning round on the pipeline is exerted in the improvement.

The utility model discloses utilize electronic mode to realize the automation of pipeline and screw and loosen soon, can greatly reduced manpower resources consumption, improve work efficiency.

Drawings

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

FIG. 1: the structure of embodiment 1 of the utility model is schematically shown;

FIG. 2 is a schematic diagram: the utility model discloses one of the partial section views of embodiment 1;

FIG. 3: the second partial cross-sectional view of embodiment 1 of the present invention;

FIG. 4: the utility model discloses the partial section view of embodiment 2;

FIG. 5 is a schematic view of: the structure of embodiment 2 of the utility model is schematically shown;

wherein: 1-main handle, 11-connecting cylinder, 12-motor, 13-speed reducer, 14-driving gear, 15-driven gear, 16-shaft rod, 17-first clamping jaw, 171-first chain, 172-first chain wheel, 18-control switch, 19-ratchet disc, 2-auxiliary handle, 21-second clamping jaw, 211-second chain, 212-second chain wheel, 22-pawl, 23-pull rope and 24-toggle switch.

Detailed Description

For a better understanding of the present invention, the following embodiments and the accompanying drawings are used to further clarify the content of the present invention, but the protection of the present invention is not limited to the following embodiments. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details.

Example 1:

referring to fig. 1-3, the present embodiment is directed to a pipe tightening device. The pipeline screwing device comprises a main handle 1 and an auxiliary handle 2 which are hinged with each other, and a hinged shaft between the main handle 1 and the auxiliary handle 2 is a shaft lever 16.

As shown in fig. 1, the main handle 1 has a circular cross section, a connecting cylinder 11 is fixedly arranged at one end close to a shaft 16, the connecting cylinder 11 is a cylindrical hollow cylinder, the central axis of the connecting cylinder is perpendicular to and coplanar with the central axis of the main handle 1, and the shaft 16 is coaxially arranged in the connecting cylinder 11 by a bearing. The secondary handle 2 is circular in cross section and has a central axis coplanar with the central axis of the primary handle 1, which is perpendicular to the central axis of the shaft 16.

The two ends of the connecting cylinder 11 are fixedly provided with first clamping jaws 17 with the same inclination angle; one end of the auxiliary handle 2 close to the shaft lever 16 is fixedly provided with a second clamping jaw 21, and the second clamping jaw 21 penetrates through the middle part of the connecting cylinder 11; and the shaft rod 16 penetrates through the root of the second clamping jaw 21, and a bearing is arranged at the penetrating position. The first jaw 17 and the second jaw 21 are arranged oppositely, the first jaw 17 is bent from the middle part to one side of the second jaw 21, and the second jaw 21 is bent from the middle part to one side of the first jaw 17. The main handle 1, the first clamping jaw 17, the auxiliary handle 2 and the second clamping jaw 21 jointly form a pincer shape, and the first clamping jaw 17 and the second clamping jaw 21 are jaws to clamp a pipeline to be installed.

As shown in fig. 2, which is a partial sectional view of the main handle 1, a motor 12 and a speed reducer 13 are fixedly arranged inside one end of the main handle 1 close to the shaft lever 16, and the speed reducer 13 is directly and fixedly connected with an output shaft of the motor 12; the speed reducer 13 is a planetary speed reduction mechanism for reducing speed and increasing torque. An output shaft of the speed reducer 13 is coaxial with the main handle 1, a driving gear 14 is coaxially and fixedly arranged on the output shaft of the speed reducer 13, and a driven gear 15 matched with the driving gear 14 is coaxially and fixedly arranged on the shaft lever 16; the drive gear 14 and the driven gear 15 are both bevel gears. Therefore, after the motor 12 rotates, the shaft 16 can be driven to rotate by the reduction gear 13, the drive gear 14, and the driven gear 15 in this order.

As shown in fig. 2 and 3, the first jaw 17 and the second jaw 21 are square in cross section, hollow inside and have no side wall facing the opposite direction. Meanwhile, a first chain 171 is arranged in the first clamping jaw 17, a second chain 211 is arranged in the second clamping jaw 21, and the first chain 171 and the second chain 211 are both in transmission connection with the shaft rod 16.

Specifically, three first chain wheels 172 are arranged in the first clamping jaw 17, and the central axes of the first chain wheels 172 are parallel to the central axis of the shaft lever 16; one of the first chain wheels 172 is located at the end of the first clamping jaw 17, the other one of the first chain wheels 172 is located at the bent position of the middle part of the first clamping jaw 17, and the last one of the first chain wheels 172 is coaxially and fixedly arranged on the shaft lever 16. Three second chain wheels 212 are arranged in the second clamping jaw 21, and the central axes of the second chain wheels 212 are all parallel to the central axis of the shaft 16; one of the second sprockets 212 is located at the end of the second jaw 21, the other second sprocket 212 is located at the middle bending position of the second jaw 21, and the last second sprocket 212 is coaxially and fixedly arranged on the shaft 16.

The three first chain wheels 172 are distributed in a triangular shape, and the first chain 171 is arranged outside the three first chain wheels 172 in a matching manner; the three second sprockets 212 are distributed in a triangular shape, and the second chain 211 is arranged outside the three second sprockets 212 in a matching mode. Therefore, when the shaft 16 is driven by the motor 12 to rotate, the first chain 171 is driven by the first chain wheel 172 on the shaft 16, and the second chain 211 is driven by the second chain wheel 212 on the shaft 16. And, naturally, both the first chain 171 and the second chain 211 are in an untensioned state.

In this embodiment, the first chain 171 and the second chain 211 are both internally guided toothed chains, and the first sprocket 172 and the second sprocket 212 are both internally guided sprockets.

This device is at the during operation, handheld main handle 1 and vice handle 2 utilize first clamping jaw 17 and second clamping jaw 21 to press from both sides the pipeline of treating the installation, at this moment under the relative pressure of pipeline, first chain 171 and second chain 211 will tighten and the partial pipe wall of the relative both sides of butt pipeline, starting motor 12 afterwards, one side of first chain 171 and pipeline contact, and one side of second chain 211 and pipeline contact will move to opposite direction respectively, thereby drive the pipeline and rotate, accomplish screwing or unscrewing of pipeline.

In order to increase the friction between first chain 171 and second chain 211 and the pipe and avoid slipping, anti-slip teeth are provided on the outer side surfaces of first chain 171 and second chain 211. As shown in fig. 3, the teeth on both first and

second chains

171, 211 are oriented clockwise, so for the teeth to function, the shaft 16 must rotate in the same direction as the teeth. If the pipe is clamped in the state of fig. 3, the shaft 16 rotates clockwise (the anti-slip teeth are oriented clockwise), which drives the first chain 171 and the second chain 211 to rotate clockwise, and drives the pipe to rotate counterclockwise. Certainly, after the device is rotated by 180 degrees, the anti-skidding teeth face to the anticlockwise direction, and the pipeline can be driven to rotate clockwise by clamping the pipeline.

In order to control the motor 12, a control switch 18 is arranged at the holding end of the main handle 1, the control switch 18 is electrically connected with the motor 12 and an external power line, and the external power line extends out of the end part of the holding end of the main handle 1. The control switch 18 is a speed control switch and can control the start, stop, and rotational speed of the motor 12. And the control switch 18 can detect the working current of the motor 12, and can automatically cut off the power supply of the motor 12 when the working current is too large, so that the excessive screwing of a pipeline can be avoided, and the motor 12 can be prevented from being burnt due to too large current.

Example 2:

referring to fig. 4 to 5, the pipe tightening device provided in this embodiment is mainly modified as follows compared to embodiment 1: a ratchet wheel locking structure is adopted between the auxiliary handle 2 and the main handle 1.

Specifically, as shown in fig. 4, a ratchet plate 19 is coaxially and fixedly disposed in the connecting cylinder 11, and the ratchet plate 19 and the driven gear 15 are respectively disposed on both sides of the second jaw 21. Ratchets are uniformly arranged on one side, facing the second clamping jaw 21, of the ratchet wheel disc 19 along the circumferential direction, meanwhile, a pawl 22 is fixedly arranged at the root of the second clamping jaw 21, and the pawl 22 is an elastic metal sheet and can be clamped into the ratchets to prevent the auxiliary handle 2 from swinging in the opposite direction. Namely: the secondary handle 2 can only swing in a direction approaching the primary handle 1 by the ratchet plate 19 and the pawls 22.

Meanwhile, a toggle switch 24 (fig. 5) is arranged at the holding end of the auxiliary handle 2, a pull rope 23 is further arranged in the auxiliary handle 2, one end of the pull rope 23 is fixedly connected with the toggle switch 24, and the other end of the pull rope 23 is fixedly connected with the end portion of the pawl 22 after penetrating through the side wall of the auxiliary handle 2 and the side wall of the second clamping jaw 21. When the toggle switch 24 is turned, the pull cord 23 is pulled to pull the pawl 22 away from the ratchet plate 19, thereby allowing the sub-handle 2 to swing away from the main handle 1.

Therefore, compared to embodiment 1, when the apparatus is operated, the auxiliary handle 2 is automatically locked by the ratchet mechanism after the main handle 1 and the auxiliary handle 2 are gripped and the pipe is clamped by the first jaw 17 and the second jaw 21, and the grip of the auxiliary handle 2 is released, so that the clamped state of the pipe cannot be maintained. When needed, the toggle switch 24 can be used for releasing the locking state of the auxiliary handle 2 and releasing the clamping of the pipeline.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. A pipeline screwing device is characterized in that: comprises a main handle and an auxiliary handle which are hinged with each other by a shaft rod;

2. The pipe tightening device according to claim 1, wherein: the end part, the middle part and the root part of the first clamping jaw are provided with first chain wheels matched with the first chain, and the first chain wheels at the root part are fixedly connected with the shaft rod; and the end part, the middle part and the root part of the second clamping jaw are respectively provided with a second chain wheel matched with the second chain, and the second chain wheel positioned at the root part is fixedly connected with the shaft rod.

3. The pipe tightening device according to claim 1, wherein: and anti-skidding teeth are arranged on the outer side surfaces of the first chain and the second chain.

4. The pipe tightening device according to claim 1, wherein: a ratchet wheel disc is fixedly arranged in the connecting cylinder, and a pawl matched with the ratchet wheel disc is fixedly arranged on the second clamping jaw.

5. The pipe tightening device according to claim 4, wherein: a pull rope is arranged in the auxiliary handle, a toggle switch is arranged at the holding end of the auxiliary handle, one end of the pull rope is fixedly connected with the pawl, and the other end of the pull rope is fixedly connected with the toggle switch.

6. The pipe tightening device according to claim 2, wherein: the first chain and the second chain are both inner guide type tooth-shaped chains, and the first chain wheel and the second chain wheel are both inner guide type chain wheels.

7. The pipe tightening device according to claim 1, wherein: the central axes of the main handle and the auxiliary handle are coplanar.

8. The pipe tightening device according to claim 1, wherein: and a control switch for controlling the motor is arranged at the holding end of the main handle.

9. The pipe tightening device according to claim 1, wherein: the output shaft of the motor is connected with a speed reducer, a driving gear is fixedly arranged on the output shaft of the speed reducer, and a driven gear matched with the driving gear is fixedly arranged on the shaft lever.

10. The pipe tightening device according to claim 9, wherein: the driving gear and the driven gear are both conical gears.