Corrugated pipe tensioning device capable of adjusting pipe diameter

Abstract

The corrugated pipe tensioning device comprises a tension spring, a handrail frame cross rod, two pull rods and two handrail frames, rack parts are arranged at the rear ends of the pull rods, rod sleeves are connected to the outer sides of the rack parts in a sliding mode, the lower ends of the handrail frames are connected with the rod sleeves in a rotating mode through rotating shafts, gears and positioning arms are installed on the rotating shafts, and the positioning arms are connected with the rack parts in a sliding mode. The gear and the positioning arm are located in the rod sleeve, the upper end of the tension spring is fixedly connected with the upper end of the positioning arm, and the lower end of the tension spring is fixed to the inner side wall of the rod sleeve. Socket pipes are installed at the upper ends of the armrest frames, and the two ends of the armrest frame cross rod are installed in the socket pipes of the two armrest frames respectively. The corrugated pipe fastening device can quickly complete fastening connection of corrugated pipes, is suitable for corrugated pipes with different pipe diameters, and avoids the tedious step of replacing accessories. The construction operation is simple and convenient, the construction efficiency is improved, the engineering quality is ensured, and the construction cost is reduced. Therefore, the cost expenditure and the construction period are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bellows connection, and in particular relates to a bellows tensioning device capable of adjusting the pipe diameter. Background Art

[0002] A bellows is a tubular elastic sensitive element formed by connecting foldable corrugated sheets along the folding and stretching direction. It is widely used in construction and factory production because of its elasticity and the ability to generate displacement under pressure, axial force, lateral force or bending moment. Since the bellows has a thin wall and is soft, it is time-consuming and laborious to connect two bellows by hand, which has a serious impact on work efficiency. On the one hand, the existing tools for auxiliary bellows tensioning are relatively complex in structure, and the maintenance operation is cumbersome after damage, resulting in reduced work efficiency. On the other hand, the existing tools for auxiliary bellows tensioning have a fixed overall structure, and some accessories need to be replaced for adjustment to suit different pipe diameters. It is inconvenient to carry during use and the accessories are easy to lose, so it cannot be suitable for different operators. Utility Model Content

[0003] The utility model aims to provide a bellows tensioning device capable of adjusting the diameter of the pipe, so as to solve the problems of low efficiency in the installation and connection of the bellows and inconvenience in the construction due to the numerous accessories.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is a corrugated pipe tensioning device with adjustable pipe diameter, comprising a tension spring, a handrail cross bar, two pull rods and two handrails, a rack portion is provided at the rear end of the pull rod, a rod sleeve is slidably connected to the outer side of the rack portion, the lower end of the handrail is rotatably connected to the rod sleeve through a rotating shaft, a gear and a positioning arm are installed on the rotating shaft, the gear and the positioning arm are both located inside the rod sleeve, the upper end of the tension spring is fixedly connected to the upper end of the positioning arm, and the lower end of the tension spring is fixed to the inner side wall of the rod sleeve; a socket pipe is installed at the upper end of the handrail, and the two ends of the handrail cross bar are respectively installed in the socket pipes of the two handrails.

[0005] Preferably, fastening bolts are installed on the side walls of the socket pipe to fix the cross bar of the handrail.

[0006] Preferably, the positioning arm can be pressed between two adjacent gear teeth on the rack portion, and the movement of the pull rod in the rod sleeve is restricted by the abutment between the gear teeth and the lower end of the positioning arm.

[0007] Preferably, the gear is meshed with the rack portion.

[0008] Preferably, a wire rope connector is provided on the front end of the pull rod and the rod sleeve, and a through hole is provided on the wire rope connector.

[0009] Preferably, the first steel wire rope passes through the through holes on the wire rope connectors at the front ends of the two pull rods, and the second steel wire rope passes through the through holes on the wire rope connectors of the two rod sleeves, respectively. Both ends of the first steel wire rope are connected with a wire rope self-locking device and a lock buckle, respectively. Both ends of the second steel wire rope are connected with a wire rope self-locking device and a lock buckle, respectively, and the wire rope self-locking device and the lock buckle match each other.

[0010] Preferably, the gear has five teeth.

[0011] Preferably, a knob is mounted on the outer side wall of the rod sleeve, which allows the positioning arm to rotate within the rod sleeve.

[0012] The beneficial effects of the utility model are as follows: the utility model can be applied to the requirements of tightening corrugated pipes of different diameters, a spigot pipe is installed on the upper end of the handrail, and the two ends of the handrail crossbar are respectively installed in the spigot pipes of the two handrails, and are fastened and connected by fastening bolts. When the diameter of the corrugated pipe is small, the handrails on both sides can be moved closer to the center of the handrail crossbar, and the spigot pipes are passed through the two ends of the handrail crossbar, and the exposed part can be used as a handrail. The device can quickly complete the reinforcement of the corrugated pipe, ensure the stability of the corrugated pipe connection, and achieve the purpose of simple operation and convenient construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the bellows tensioning device with adjustable pipe diameter of the utility model;

[0014] Figure 2 It is a schematic diagram of the connection between the gear, positioning arm and rack. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with specific embodiments, but the protection scope of the present invention is not limited thereto.

[0016] Example 1

[0017] like Figure 1-2 As shown, a bellows tensioning device with adjustable pipe diameter includes a tension spring 15, a handrail cross bar 11, two pull rods 3 and two handrails 10, the rear end of the pull rod 3 is provided with a rack portion 9, the outer side of the rack portion 9 is slidably connected with a rod sleeve 16, the lower end of the handrail 10 is rotatably connected to the rod sleeve 16 through a rotating shaft 13, a gear 18 and a positioning arm 14 are installed on the rotating shaft 13, the gear 18 and the positioning arm 14 are both located inside the rod sleeve 16, the upper end of the tension spring 15 is fixedly connected to the upper end of the positioning arm 14, and the lower end of the tension spring 15 is fixed to the inner wall of the rod sleeve 16; a socket pipe 17 is installed on the upper end of the handrail 10, and the two ends of the handrail cross bar 11 are respectively installed in the socket pipes 17 of the two handrails.

[0018] A fastening bolt 12 is installed on the side wall of the socket pipe 17 for fixing the handrail cross bar 11.

[0019] The positioning arm 14 can be pressed between two adjacent gear teeth on the rack portion 9 , and the gear teeth are abutted against the lower end of the positioning arm 14 to limit the movement of the pull rod rack portion in the rod sleeve 16 .

[0020] The gear 18 is meshed with the rack portion 9 . In this embodiment, the gear 18 has five teeth.

[0021] A knob 8 is installed on the outer wall of the rod sleeve 16 to rotate the positioning arm 14 in the rod sleeve. By turning the knob, the positioning arm is driven to rotate in the rod sleeve. After one end of the positioning arm is rotated, it can extend between the two gear teeth of the rack part, or disengage from between the two gear teeth.

[0022] A wire rope connector 4 is provided on the front end of the pull rod 3 and the rod sleeve 16 , and a through hole 7 is provided on the wire rope connector 4 .

[0023] The first steel wire rope 1 passes through the through holes 7 on the steel wire rope connectors 4 at the front ends of the two pull rods, and the second steel wire rope 2 passes through the through holes 7 on the steel wire rope connectors of the two rod sleeves 16, respectively. The two ends of the first steel wire rope 1 are respectively connected with a steel wire rope self-locking device 6 and a locking buckle 5, and the two ends of the second steel wire rope 2 are respectively connected with a steel wire rope self-locking device 6 and a locking buckle 5, and the steel wire rope self-locking device 6 and the locking buckle 5 match each other.

[0024] When the utility model is used, first determine the diameter of the corrugated pipe that needs to be tightened, adjust the position of the self-locking device on the wire rope (the length is the circumference of the corrugated pipe) and the width of the handrail frame (the diameter of the corrugated pipe). Place the tensioning device at the connection between the two corrugated pipes, and wrap the ends of the corrugated pipes on both sides around to form a closed loop. Connect and fix it with the wire rope self-locking device through the lock buckle, and check whether there are foreign objects blocking the bottom of the pipe and whether the wire rope is in a tightened state. After the inspection is completed, manually pull the handrail frame to push the handrail frame to move forward smoothly along the rack part, tighten the distance between the two wire ropes, so that the two corrugated pipes are slowly tightened until the installation is completed.

[0025] One end of the pull rod moves in the rod sleeve along the axial direction of the corrugated tube, driving the second steel wire rope structure to approach the first steel wire rope structure, thereby tightening the two connected corrugated tubes, and after tightening, the moved pull rod is positioned by the positioning arm to limit the movement of the pull rod, thereby maintaining the tightened state, providing favorable protection for the tightening and docking of the corrugated tubes.

[0026] The end of the positioning arm is pressed down between two adjacent gear teeth on the rack part, and the contact between the gear teeth and the end of the positioning arm limits the movement of the pull rod in the rod sleeve, so that the spacing between the first steel wire rope and the second steel wire rope remains unchanged, and a good tensioning effect is maintained. By adopting the above technical solution, the staff turns the knob, and the knob drives the positioning arm to rotate in the rod sleeve. After the rotation, one end of the positioning arm can be extended between the two gear teeth of the rack part, or disengaged from the two gear teeth, which provides convenience for the staff to operate to maintain the tensioning effect.

[0027] The utility model adopts a self-locking device to quickly adjust its position on the wire rope, and after the adjustment is completed, it is connected with the lock buckle to form a circular ring structure, and the two can be detachably connected to each other, so as to achieve the effects of convenient use, quick installation and quick adjustment.

[0028] The unexplained parts involved in the present invention, such as the wire rope self-locking device, the lock buckle, etc., are all conventional technical means in the field and will not be described in detail here.

[0029] The device of this embodiment can quickly complete the fastening connection of the bellows, and is suitable for different bellows diameters, avoiding the tedious steps of replacing accessories. The construction operation is simple and convenient, which improves the construction efficiency, ensures the project quality, and reduces the construction cost. Therefore, it has a great improvement on the cost expenditure and construction period.

Claims

1. A bellows tensioning device with adjustable diameter, characterized in that: It includes a tension spring, a handrail cross bar, two pull rods and two handrails. A rack portion is provided at the rear end of the pull rod. A rod sleeve is slidably connected to the outer side of the rack portion. The lower end of the handrail is rotatably connected to the rod sleeve through a rotating shaft. A gear and a positioning arm are installed on the rotating shaft. The gear and the positioning arm are both located inside the rod sleeve. The upper end of the tension spring is fixedly connected to the upper end of the positioning arm, and the lower end of the tension spring is fixed to the inner wall of the rod sleeve. A socket pipe is installed at the upper end of the handrail, and both ends of the handrail cross bar are respectively installed in the socket pipes of the two handrails.

2. The bellows tensioning device with adjustable diameter as claimed in claim 1, characterized in that: Fastening bolts are installed on the side walls of the socket pipe to fix the crossbar of the handrail.

3. The bellows tensioning device with adjustable diameter as claimed in claim 1, characterized in that: The positioning arm can be pressed between two adjacent gear teeth on the rack portion, and the movement of the pull rod in the rod sleeve is restricted by the abutment between the gear teeth and the lower end of the positioning arm.

4. The bellows tensioning device with adjustable diameter as claimed in claim 1, characterized in that: The gear is meshed with the rack portion.

5. The bellows tensioning device with adjustable diameter as claimed in claim 1, characterized in that: The front end of the pull rod and the rod sleeve are both provided with a wire rope connector, and a through hole is opened on the wire rope connector.

6. The bellows tensioning device with adjustable diameter as claimed in claim 5, characterized in that: The first steel wire rope passes through the through holes on the steel wire rope connectors at the front ends of the two pull rods, and the second steel wire rope passes through the through holes on the steel wire rope connectors of the two rod sleeves. Both ends of the first steel wire rope are connected with a steel wire rope self-locking device and a lock buckle, and both ends of the second steel wire rope are connected with a steel wire rope self-locking device and a lock buckle, and the steel wire rope self-locking device and the lock buckle match each other.

7. The bellows tensioning device with adjustable diameter as claimed in claim 1, characterized in that: The number of teeth of the gear is 5.

8. The bellows tensioning device with adjustable diameter as claimed in claim 1, characterized in that: A knob is installed on the outer side wall of the rod sleeve, which enables the positioning arm to rotate in the rod sleeve.

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