Tensioning mechanism of internal expanding type beveling machine

Abstract

The utility model discloses a tensioning mechanism of an internal tensioning type beveling machine, which belongs to the technical field of beveling machine equipment, and comprises a fixed component and a movable component, the movable component comprises a first pull rod, the first pull rod is rotatably connected with a second pull rod, the second pull rod is fixedly connected with a tensioning disc, a wedge block is arranged above the tensioning disc, and the wedge block is fixedly connected with the fixed component. The wedge block is fixedly connected with the fixing assembly. The tensioning mechanism of the internal tensioning type beveling machine is simple in structure and easy to operate, the first pull rod and the second pull rod are arranged, threads are not arranged on the second pull rod, compared with an existing whole pull rod, the tensioning mechanism is higher in strength, the tensioning mechanism is not prone to breakage, the tensioning effect is good, the structure can be subjected to miniaturization treatment, and the service life of the tensioning mechanism is prolonged. The tensioning mechanism is simple in structure and convenient to use, a small-caliber pipeline can be beveled conveniently, the tensioning mechanism is in pure mechanical motion and can normally move without electric power support, and in addition, the wedge block achieves tensioning and loosening through the tensioning disc, so that a worker responds rapidly in the working process, and time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of beveling machine equipment, in particular to a tensioning mechanism of an internal expansion type beveling machine. Background Art

[0002] Internal expansion beveling machines are mainly used for edge processing of pipes or steel plates to form bevels at specific angles for welding. The tensioning mechanism is a key component that can achieve fixed connection between the internal expansion beveling machine and the pipe. The tensioning mechanism of the internal expansion beveling machines on the market is currently complex in structure, and will break when the feed rate is large. The tensioning effect is poor, and the structure cannot be miniaturized. These shortcomings directly affect the normal operation and use range of the beveling machine. Summary of the invention

[0003] The purpose of the utility model is to provide a tensioning mechanism of an internal expansion type beveling machine, which has a simple structure and is easy to operate. By arranging a first pull rod and a second pull rod, and no thread is arranged on the second pull rod, the strength is stronger than the existing whole pull rod, the tensioning mechanism will not break easily, the tensioning effect is good, and the structure can be miniaturized, which is convenient for beveling small-diameter pipes. The tensioning mechanism is a purely mechanical movement and can move normally without power support. In addition, the wedge block is tightened and loosened by a tensioning disk, which enables the staff to react quickly at work and saves time.

[0004] To achieve the above-mentioned purpose, the utility model provides a tensioning mechanism of an internal expansion type beveling machine, including a fixed component and a movable component, the movable component including a first pull rod, the first pull rod is rotatably connected to the second pull rod, the second pull rod is fixedly connected to the tensioning disk, a wedge block is provided above the tensioning disk, and the wedge block is fixedly connected to the fixed component.

[0005] Preferably, the fixing assembly includes a feed screw, the feed screw is fixedly connected to the central shaft via a hexagon socket fastening screw, a screw hole is provided on the central shaft, and the central shaft is fixedly connected to the wedge seat via a screw.

[0006] Preferably, the outer surface of the first pull rod is provided with a thread matching the feed screw.

[0007] Preferably, the wedge block seat is provided with an inclined surface matching with the wedge block, notches are provided on both sides of the inclined surface, and the wedge block is provided with a limiting block corresponding to the notches.

[0008] Preferably, the groove at the tail of the wedge block is fixedly connected to a wedge block fixing plate, and the wedge block fixing plate is fixedly connected to the tensioning disk.

[0009] Preferably, a nut is sleeved on the first pull rod, and one end of the second pull rod away from the first pull rod is fixedly connected to the tensioning disk via a key and a nut.

[0010] Therefore, the utility model adopts the tensioning mechanism of the above-mentioned internal expansion beveling machine, which has a simple structure and is easy to operate. By setting the first pull rod and the second pull rod, and no thread is set on the second pull rod, the strength is stronger than the existing whole pull rod, the tensioning mechanism will not break easily, the tensioning effect is good, and the structure can be miniaturized, which is convenient for beveling small-diameter pipes. The tensioning mechanism is a purely mechanical movement and can move normally without power support. In addition, the wedge block is tightened and loosened through the tensioning plate, which allows the staff to react quickly at work and saves time.

[0011] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional view of an embodiment of a tensioning mechanism of an internal expansion type beveling machine of the utility model.

[0013] Reference numerals

[0014] 1. First tie rod; 2. Feed screw; 3. Center shaft; 4. Second tie rod; 5. Wedge block seat; 6. Wedge; 7. Wedge block fixing block; 8. Tensioning plate. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0016] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0017] Embodiment 1

[0018] like Figure 1As shown, the utility model provides a tensioning mechanism of an internal expansion type beveling machine, including a fixed component and a movable component, wherein the fixed component is used to provide an installation space for the movable component, and the movable component is used to move so that the internal expansion type beveling machine is fixedly connected to the pipeline.

[0019] The moving assembly includes a first pull rod 1, which is rotatably connected to a second pull rod 4. The first pull rod 1 can drive the second pull rod 4 to move, and when the first pull rod 1 is rotatably moved, the second pull rod 4 only needs to perform axial movement without rotation to achieve tension. The second pull rod 4 is fixedly connected to a tensioning disk 8, and a wedge block 6 is provided above the tensioning disk 8. The wedge block 6 is fixedly connected to the fixed assembly. The tensioning disk 8 is used to push and pull the wedge block 6 so that the wedge block 6 slides on the wedge block seat 5 to achieve the tensioning and loosening of the structure. A nut is sleeved on the first pull rod 1, and the rotation of the first pull rod 1 is achieved by rotating the nut. The end of the second pull rod 4 away from the first pull rod 1 is fixedly connected to the tensioning disk 8 through a key and a nut. The second pull rod 4 is connected to the tensioning disk 8, so that the second pull rod 4 can drive the tensioning disk 8 to perform axial movement.

[0020] The fixing assembly includes a feed screw 2, which is used to place the first tie rod 1 and the second tie rod 4 inside, protect the first tie rod 1 and the second tie rod 4, and control the movement of the first tie rod 1. The outer surface of the first tie rod 1 is provided with a thread that matches the feed screw 2. The feed screw 2 is fixedly connected to the central shaft 3 by a hexagon socket fastening screw. The central shaft 3 is provided with a screw hole. The central shaft 3 is fixedly connected to the wedge seat 5 by screws. When the central shaft 3 cannot rotate, it ensures that the feed screw 2 cannot rotate either, but the first tie rod 1 can rotate inside the feed screw 2.

[0021] The wedge block seat 5 is provided with an inclined surface matched with the wedge block 6, and notches are provided on both sides of the inclined surface. The wedge block 6 is provided with a limit block corresponding to the notch, and the limit block slides in the notch to ensure that the wedge block 6 can slide on the wedge block seat 5 without falling. The groove at the tail of the wedge block 6 is fixedly connected to the wedge block fixing plate 7, and the wedge block fixing plate 7 is fixedly connected to the tensioning plate 8. Under the interaction between the wedge block 6 and the wedge block seat 5, the tensioning plate 8 cannot rotate and can only move up and down.

[0022] When the tensioning mechanism of the internal expansion beveling machine provided by the utility model is used, the tensioning mechanism is first placed in the pipeline, and then the first tie rod 1 is rotated to make the first tie rod 1 rotate on the feed screw 2, and the first tie rod 1 moves axially while rotating. While the first tie rod 1 moves, it drives the second tie rod 4 to move in the direction of the movement of the first tie rod 1, and the second tie rod 4 drives the tensioning plate 8 to move in the direction of the movement of the first tie rod 1. The tensioning plate 8 drives the wedge 6 to slide on the inclined surface of the wedge seat 5, and the wedge 6 gradually extends, thereby tightening the tensioning mechanism in the pipeline and realizing a fixed connection between the tensioning mechanism and the pipeline. When it is necessary to loosen, it is only necessary to rotate the first tie rod 1 in the opposite direction to retract the wedge 6 and detach the tensioning mechanism from the pipeline.

[0023] Therefore, the utility model adopts the tensioning mechanism of the above-mentioned internal expansion beveling machine, which has a simple structure and is easy to operate. By setting the first pull rod and the second pull rod, and no thread is set on the second pull rod, the strength is stronger than the existing whole pull rod, the tensioning mechanism will not break easily, the tensioning effect is good, and the structure can be miniaturized, which is convenient for beveling small-diameter pipes. The tensioning mechanism is a purely mechanical movement and can move normally without power support. In addition, the wedge block is tightened and loosened through the tensioning plate, which allows the staff to react quickly at work and saves time.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A tensioning mechanism of an internal expansion beveling machine, characterized in that: It includes a fixed component and a movable component. The movable component includes a first pull rod, which is rotatably connected to a second pull rod. The second pull rod is fixedly connected to a tensioning disk. A wedge is provided above the tensioning disk, and the wedge is fixedly connected to the fixed component.

2. The tensioning mechanism of the internal expansion type beveling machine according to claim 1, characterized in that: The fixing assembly comprises a feed screw, and the feed screw is fixedly connected to the central shaft via a hexagon socket fastening screw. A screw hole is provided on the central shaft, and the central shaft is fixedly connected to the wedge seat via a screw.

3. The tensioning mechanism of the internal expansion type beveling machine according to claim 2, characterized in that: The outer surface of the first pull rod is provided with a thread matched with the feed screw.

4. The tensioning mechanism of the internal expansion type beveling machine according to claim 2, characterized in that: The wedge block seat is provided with an inclined surface matched with the wedge block, and notches are provided on both sides of the inclined surface. The wedge block is provided with a limiting block corresponding to the notches.

5. The tensioning mechanism of the internal expansion type beveling machine according to claim 1, characterized in that: The groove at the tail of the wedge is fixedly connected to the wedge fixing plate, and the wedge fixing plate is fixedly connected to the tensioning disk.

6. The tensioning mechanism of the internal expansion type beveling machine according to claim 1, characterized in that: A nut is sleeved on the first pull rod, and one end of the second pull rod away from the first pull rod is fixedly connected to the tensioning plate through a key and a nut.

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