A bellows tensioner

Abstract

This utility model relates to the field of pipeline construction technology, and in particular to a corrugated pipe tensioner. Each rack is connected to a gear transmission mechanism. Two gear transmission mechanisms are fixedly connected to opposite sides with a first hinge seat. A first clamping plate is hinged between the two first hinge seats. Two racks are fixedly connected to opposite sides with a second hinge seat. A second clamping plate is hinged between the two second hinge seats. Each gear transmission mechanism is connected to an operating lever. This utility model uses a first clamping plate hinged to the gear transmission mechanism and a second clamping plate hinged to the rack. Moving the rack causes the first and second clamping plates to be tilted. The tilted first and second clamping plates are respectively fitted onto the spiral winding ribs of different wound pipes. Because the first and second clamping plates are tilted, they better fit the spiral winding ribs of the wound pipe, thereby improving the tensioning effect on the wound pipe.

Description

Technical Field

[0001] This utility model relates to the field of pipeline construction technology, and in particular to a corrugated pipe tensioner. Background Technology

[0002] A corrugated pipe is a tubular elastic sensitive element made of foldable corrugated sheets connected along the folding and stretching direction. Due to its elasticity and the ability to generate displacement under pressure, axial force, lateral force or bending moment, it is widely used in building construction and factory production.

[0003] When installing two corrugated pipes together, a tensioner is used to tighten and connect them. The corrugated pipes have circular ribs on the outside, and the tensioner is also used to tighten and connect the spiral pipes. The spiral pipes have spiral ribs on the outside. When using the corrugated pipe tensioner to tighten and connect the spiral pipes, the clamps of the tensioner cannot fully fit the outside because the cross-section of the outer ribs of the spiral pipes is oblique and curved, thus reducing the tightening effect on the spiral pipes. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the outer rib cross-section of the spiral tube is oblique and curved in the existing technology, which causes the clamp of the tensioner to not be able to fully fit the outer side, thereby reducing the tensioning effect on the spiral tube. Therefore, a corrugated tube tensioner is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bellows tensioner is designed, comprising two parallel racks, each rack being connected to a gear transmission mechanism, and a first hinge seat being fixedly connected to one side of each of the two gear transmission mechanisms. A first clamping plate is hinged between the two first hinge seats, and a second hinge seat is fixedly connected to one side of each of the two racks. A second clamping plate is hinged between the two second hinge seats. An operating lever is connected to each of the gear transmission mechanisms.

[0007] Preferably, one end of each of the operating levers is fitted with an anti-slip sleeve.

[0008] Preferably, the upper surfaces of both the first clamping plate and the second clamping plate are connected with reinforcing ribs.

[0009] Preferably, the lower surfaces of the first clamping plate and the second clamping plate are provided with a plurality of mounting grooves at equal intervals along the axial direction, and each mounting groove is provided with a roller.

[0010] Preferably, each of the gear transmission mechanisms is connected to a cleaning mechanism at both ends. The cleaning mechanism includes a fixed frame, which is fixedly connected to the gear transmission mechanism. The rack passes through the fixed frame, and a cleaning pad is connected to the inner wall of the fixed frame. The cleaning pad is in contact with the rack.

[0011] Preferably, the cleaning pad is a polyurethane cleaning pad.

[0012] Preferably, a limiting mechanism is hinged between the two operating rods. The limiting mechanism includes a connecting rod, one end of which is hinged to one operating rod, and a grooved post is hinged to the other operating rod. One end of the connecting rod is slidably inserted into the grooved post. The connecting rod has several slots evenly spaced along its length. The grooved post has a through hole. A rotating plate is rotatably connected to the upper end of the grooved post. A locking block is fixedly connected to the lower surface of the rotating plate. The locking block passes through the through hole and engages with the slot.

[0013] Preferably, the radius of the through hole is larger than the radius of the card block.

[0014] The bellows tensioner proposed in this utility model has the following advantages:

[0015] The first clamping plate is hinged to the gear transmission mechanism, and the second clamping plate is hinged to the rack. After moving the rack, the first clamping plate and the second clamping plate are tilted. The tilted first clamping plate and the second clamping plate are respectively sleeved on the spiral winding ribs of different winding tubes. Since the first clamping plate and the second clamping plate are in an inclined state, they fit better with the spiral winding ribs of the winding tube, thereby improving the tensioning effect on the winding tube. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a bellows tensioner proposed in this utility model. Figure 1 ;

[0017] Figure 2 A schematic diagram of the structure of a bellows tensioner proposed in this utility model. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the connection structure between the central rack and the second clamping plate of a bellows tensioner proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the connection between the gear transmission mechanism and the cleaning mechanism in a bellows tensioner proposed in this utility model;

[0020] Figure 5 This is a schematic diagram of the connection between the operating rod and the limiting mechanism in a bellows tensioner proposed in this utility model.

[0021] In the diagram: 1. Rack; 2. Gear transmission mechanism; 3. First hinge seat; 4. First clamping plate; 5. Second hinge seat; 6. Second clamping plate; 7. Operating lever; 8. Anti-slip sleeve; 9. Reinforcing rib; 10. Mounting groove; 11. Roller; 12. Cleaning mechanism; 13. Limiting mechanism; 121. Fixing frame; 122. Cleaning pad; 131. Connecting rod; 132. Groove column; 133. Slot; 134. Through hole; 135. Rotating plate; 136. Locking block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1: Refer to Figure 1-3 A bellows tensioner includes two parallel racks 1, each rack 1 is connected to a gear transmission mechanism 2, and a first hinge seat 3 is fixedly connected to one side of each gear transmission mechanism 2. A first clamping plate 4 is hinged between the two first hinge seats 3. A second hinge seat 5 is fixedly connected to one side of each rack 1. A second clamping plate 6 is hinged between the two second hinge seats 5. An operating lever 7 is connected to each gear transmission mechanism 2, and an anti-slip sleeve 8 is sleeved on one end of each operating lever 7.

[0024] Work process:

[0025] When installing the spiral tube, hold the two operating levers 7 with your hand. The anti-slip sleeve 8 increases the friction between your hand and the operating levers 7. Move one of the operating levers 7. The operating lever 7 drives the first hinge seat 3 to move through the gear transmission mechanism 2. The first hinge seat 3 drives the first clamping plate 4 to move. The other end of the first clamping plate 4 does not move, so that the first clamping plate 4 between the two first hinge seats 3 is tilted.

[0026] At the same time, the gear transmission mechanism 2 also drives a rack 1 to move. The rack 1 drives one end of the second clamp plate 6 to move through the second hinge seat 5, so that the second clamp plate 6 between the two second hinge seats 5 is set at an angle. The first clamp plate 4 and the second clamp plate 6, which are set at an angle, are respectively sleeved on the spiral winding ribs of different winding tubes. Since the first clamp plate 4 and the second clamp plate 6 are in an angled state, they fit better with the spiral winding ribs of the winding tube, thereby improving the tensioning effect on the winding tube.

[0027] Example 2: When the winding tube is clamped and fixed by the first clamping plate 4 and the second clamping plate 6, excessive clamping force causes the winding tube to crush. (Refer to...) Figure 3As another preferred embodiment of this utility model, the difference from embodiment 1 is that the upper surfaces of the first clamping plate 4 and the second clamping plate 6 are both connected with reinforcing ribs 9, which enhance the strength of the first clamping plate 4 and the second clamping plate 6. The lower surfaces of the first clamping plate 4 and the second clamping plate 6 are provided with a plurality of mounting grooves 10 at equal intervals along the axial direction. Each mounting groove 10 is provided with a roller 11. The first clamping plate 4 and the second clamping plate 6 are in contact with the winding tube through a plurality of rollers 11, so as to avoid local stress concentration and prevent the winding tube from being crushed.

[0028] Example 3: Since rack 1 is located in the air, dust in the air easily adheres to the sidewalls of rack 1, increasing friction between rack 1 and gear transmission mechanism 2. (Refer to...) Figure 4 As another preferred embodiment of this utility model, the difference from embodiment 1 is that each gear transmission mechanism 2 is connected to a cleaning mechanism 12 at both ends. The cleaning mechanism 12 includes a fixed frame 121, which is fixedly connected to the gear transmission mechanism 2. The rack 1 passes through the fixed frame 121, and a cleaning pad 122 is connected to the inner wall of the fixed frame 121. The cleaning pad 122 is a polyurethane cleaning pad, and the cleaning pad 122 is in contact with the rack 1.

[0029] When relative sliding occurs between the rack 1 and the gear transmission mechanism 2, the fixing frame 121 fixes the cleaning pad 122, and relative sliding occurs between the rack 1 and the cleaning pad 122. The cleaning pad 122 cleans the rack 1, thereby reducing the friction between the rack 1 and the gear transmission mechanism 2.

[0030] Example 4: After moving one operating lever 7 to tilt the first clamping plate 4 and the second clamping plate 6, it is inconvenient to push the two operating levers 7 simultaneously. (Refer to...) Figure 5 As another preferred embodiment of this utility model, the difference from embodiment 1 is that a limiting mechanism 13 is hinged between the two operating rods 7. The limiting mechanism 13 includes a connecting rod 131. One end of the connecting rod 131 is hinged to one operating rod 7, and a grooved post 132 is hinged to the other operating rod 7. One end of the connecting rod 131 is slidably inserted into the grooved post 132. Several slots 133 are evenly spaced along the length direction on the connecting rod 131. A through hole 134 is opened on the grooved post 132. A rotating plate 135 is rotatably connected to the upper end of the grooved post 132. A locking block 136 is fixedly connected to the lower surface of the rotating plate 135. The radius of the through hole 134 is larger than the radius of the locking block 136. The locking block 136 passes through the through hole 134 and engages with the slot 133.

[0031] When the operating lever 7 is moved, the rotating plate 135 is pushed upward. The rotating plate 135 drives the locking block 136 to move, so that the locking block 136 separates from the slot 133. After the operating lever 7 moves, it drives the connecting rod 131 to move. The connecting rod 131 slides on the groove post 132. After the inclination angle between the first clamping plate 4 and the second clamping plate 6 is determined, the rotating plate 135 drives the locking block 136 to engage with the slot 133, which facilitates the synchronous movement of the two operating levers 7.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bellows tensioner, comprising two parallel racks (1), each rack (1) being connected to a gear transmission mechanism (2), characterized in that, in: Each of the two gear transmission mechanisms (2) is fixedly connected to a first hinge seat (3) on one side of the opposite side, and a first clamping plate (4) is hinged between the two first hinge seats (3). Each of the two racks (1) is fixedly connected to a second hinge seat (5) on one side of the opposite side, and a second clamping plate (6) is hinged between the two second hinge seats (5). Each of the gear transmission mechanisms (2) is connected to an operating lever (7).

2. The bellows tensioner of claim 1, wherein Each of the operating levers (7) has an anti-slip sleeve (8) fitted onto one end.

3. The bellows tensioner of claim 1, wherein The upper surfaces of the first clamp plate (4) and the second clamp plate (6) are both connected with reinforcing ribs (9).

4. The bellows tensioner of claim 3, wherein The lower surfaces of the first clamp plate (4) and the second clamp plate (6) are provided with a plurality of mounting grooves (10) at equal intervals along the axis, and each mounting groove (10) is provided with a roller (11).

5. The bellows tensioner of claim 1, wherein Each gear transmission mechanism (2) is connected to a cleaning mechanism (12) at both ends. The cleaning mechanism (12) includes a fixed frame (121) which is fixedly connected to the gear transmission mechanism (2). The rack (1) passes through the fixed frame (121). A cleaning pad (122) is connected to the inner wall of the fixed frame (121). The cleaning pad (122) is in contact with the rack (1).

6. The bellows tensioner of claim 5, wherein, The cleaning pad (122) is a polyurethane cleaning pad.

7. The bellows tensioner of claim 1, wherein A limiting mechanism (13) is hinged between the two operating rods (7). The limiting mechanism (13) includes a connecting rod (131). One end of the connecting rod (131) is hinged to one operating rod (7), and a grooved post (132) is hinged to the other operating rod (7). One end of the connecting rod (131) is slidably inserted into the grooved post (132). Several slots (133) are evenly spaced along the length direction on the connecting rod (131). A through hole (134) is opened on the grooved post (132). A rotating plate (135) is rotatably connected to the upper end of the grooved post (132). A locking block (136) is fixedly connected to the lower surface of the rotating plate (135). The locking block (136) passes through the through hole (134) and engages with the slot (133).

8. The bellows tensioner of claim 7, wherein, The radius of the through hole (134) is greater than the radius of the card block (136).

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