CN202894478U - Tensioning apparatus for underwater diamond rope saw - Google Patents

Abstract

A tensioning device for an underwater diamond wire saw machine, comprising a bracket and a tensioning wheel, characterized in that the tensioning mechanism includes a left support and a right support, the left support is fixed on the support, and the right support is arranged on the support and can slide relative to the left base body, a drive disc is provided on the end face of the left support, and a first magnet is provided on the end face of the drive disc; a fixed disc corresponding to the drive disc is provided at one end of the right support, and the fixed disc There is a corresponding second magnet on the end face of the right support, and the other end of the right support is installed with a tensioning wheel shaft and a tensioning wheel. When the driving disc rotates, the first magnet rotates and generates repulsive and attractive forces with the second magnet, so that The fixed disc and the tensioning wheel move back and forth relative to the driving disc, so that the tensioning wheel moves left and right to realize the tension adjustment of the beaded rope. The utility model adopts a magnetic tensioning mechanism. Compared with the traditional mechanical tensioning mechanism, there is no energy loss caused by friction, and the vibration and noise can be greatly reduced. The utility model has the advantages of long service life of parts, saving lubricating oil and quick adjustment.

Description

A tensioning device for an underwater diamond wire saw machine

technical field

The utility model relates to the technical field of underwater diamond wire saw machines, in particular to a tensioning device for diamond wire saw machines.

Background technique

At present, in the field of cutting and processing of stone and submarine oil pipes, wire saw cutting machines have been widely used due to their own advantages. For the commonly used diamond wire saw machine, it usually includes a clamping mechanism and a cutting mechanism, wherein the cutting mechanism includes a cutting frame, a tensioning device, a main moving device, a radial feeding device and a guiding device, etc. The existing tensioning device is mainly composed of a tensioning wheel, a tensioning wheel shaft seat, an adjustment handle, a screw, and a base. The base is slidingly fitted with the tensioning wheel shaft seat. Pass through the tensioning wheel shaft seat to connect the adjustment handle, and the tensioning wheel shaft seat is provided with a tensioning wheel installation hole to install the tensioning wheel. When working, the screw is driven to rotate by rotating the adjustment handle, so that the tension wheel can move left and right to adjust the tension of the beaded rope. This structure that utilizes the rotation of the lead screw to generate the tension force will cause heat generation and energy loss due to friction, and meanwhile the adjustment speed of the tension force is relatively slow.

There is also the Chinese patent "A Wire Saw Machine Saw Rope Tensioning Device" with the patent number of 200820173477.X, which is composed of a motor, a driving wheel, a driven wheel, a saw rope and a support, and the driven wheel in the upper left corner is fixed on the telescopic oil cylinder. At one end, the other end of the telescopic oil cylinder is fixed on the bracket. There is a tensioning wheel in contact with each saw rope. The tensioning wheel is installed at one end of the tensioning telescopic oil cylinder between the two driven wheels on the same side. The other end of the oil cylinder is fixed on the bracket, and the two adjacent tensioning wheels are staggered up and down. This structure adjusts the tension of the saw rope through the expansion and contraction of the tensioning telescopic oil cylinder, so that the stone can be cut evenly. However, this structure requires the motor to rotate. Therefore, there are defects of high use cost and complex structure.

In recent years, due to the performance improvement and cost reduction of the new generation of permanent magnet materials in terms of high remanence, high coercive force, and high magnetic energy product, more and more mechanical parts and products using permanent magnets, magnetic transmission has many advantages , no friction and wear problems, can move at high speed, less vibration and noise, its potential magnetic properties are extremely high, and it can pick up heavy objects equivalent to 640 times its own weight. Therefore, permanent magnets are widely used.

Contents of the invention

The technical problem to be solved by the utility model is to provide a tensioning device for an underwater diamond wire saw machine in view of the above-mentioned technical status. The tension force drives the tension wheel to move left and right, and has the characteristics of novel and unique structure and quick adjustment.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a tensioning device of an underwater diamond wire saw machine, including a bracket, a tensioning wheel and a tensioning mechanism installed on the bracket, and the bracket is installed on the diamond wire On the frame of the saw machine, it is characterized in that the tensioning mechanism includes a left support and a right support, the left support is fixed on the support, the right support is arranged on the support and can slide relative to the left base body, the left support There is a driving disk on the end surface of the driving disk, and the first magnet is arranged on the end surface of the driving disk; For the second magnet, the other end of the right support is equipped with a tensioning wheel shaft, and the tensioning wheel is installed on the tensioning wheel shaft. When the driving disc rotates, the first magnet rotates and generates repulsion or suction force with the second magnet. Make the fixed disk move back and forth relative to the driving disk, thereby driving the right support and the tensioning wheel to move back and forth relative to the left support, so as to realize the tension adjustment of the beaded rope.

As an improvement, a drive shaft is provided in the left support, and the drive shaft is supported in the left support through bearings. One end of the drive shaft is equipped with a rotating handle and an end cover, and the other end passes through the center hole of the left support and the drive disc. They are connected by splines, and a left retaining ring is set on the end face of the drive shaft and the outside of the drive disc; a fixed shaft is provided in the right support, and one end of the fixed shaft is interference fit with the right support. The other end is in interference fit with the fixed disk, and a right retaining ring is sheathed on the end face of the fixed shaft and the outer side of the fixed disk.

As an improvement, the end faces of the driving disc and the fixed disc are respectively provided with annular grooves for embedding of the first annular permanent magnet and the second annular permanent magnet, and the first magnet and the second magnet are respectively embedded in the annular recesses. slot and secure with screws.

As an improvement, there are two symmetrical annular grooves, and the first magnet and the second magnet are two-pole permanent magnets, which are respectively composed of two semicircular rings.

As a further improvement, the first magnet and the second magnet are multi-pole permanent magnets, respectively composed of S and N poles intersecting rings.

As a further improvement, an anti-rotation pin is provided on the rotary handle, and a corresponding pin hole is provided on the end cover.

Finally, a dovetail groove is provided on the bracket from left to right, and the bottoms of the left and right supports are provided with guide surfaces that cooperate with the dovetail groove, and the left support is installed in the dovetail groove through locking bolts. Fixed, the right support is installed in the dovetail groove, and can slide left and right in the dovetail groove.

Compared with the prior art, the utility model has the advantages that: the tensioning mechanism adopts a magnetic tensioning mechanism, and through the relative rotation of two pairs of two-stage permanent magnets, an attractive or repulsive force is formed to generate tension and drive the tensioning wheel Move left and right, compared with the traditional mechanical tensioning mechanism, because the tension force is generated in a non-contact state, the permanent magnets do not contact each other, so this mechanism has no parts heating and wear problems, and can greatly reduce vibration and noise. At the same time, because the mechanism has no energy loss caused by friction, there will be no hard impact between the parts, and it has the advantages of long service life of the parts and saving lubricating oil. The utility model has the advantages of novel structure, quick and convenient adjustment, prolonging service life and reducing noise.

Description of drawings

Fig. 1 is the top view of the utility model;

Fig. 2 is the front view of the utility model;

Fig. 3 is a sectional view along line A-A of Fig. 2 .

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1, 2, and 3, a tensioning device for an underwater diamond wire saw machine includes a bracket 1, a tension wheel 8, and a tensioning mechanism installed on the bracket 1, and the bracket 1 is installed on the diamond wire saw machine. On the frame, there is a dovetail groove 1.1 on the bracket 1 from left to right, and the tensioning mechanism includes a left support 2, a right support 3, a driving disc 4, a fixed disc 5 and a rotating handle 9, the left support 2 and the right support The bottom of the seat 3 is respectively provided with a guide surface matching the dovetail groove 1.1, the left support 2 is installed in the dovetail groove 1.1 and fixed by the locking bolt 18, the right support 3 is installed in the dovetail groove 1.1, and can be installed in the dovetail groove 1.1. In 1.1, slide left and right relative to the left support 3 to adjust the tension; the left support 2 is provided with a drive shaft 6, and the drive shaft 6 is supported in the left support 2 through the bearing 13, and the left support 2 is also provided with There is a shaft sleeve 14 for fixing the bearing 13, and one end of the drive shaft 6 is equipped with a rotary handle 9 and an end cover 10, and the other end passes through the left support 2 and is connected by a spline between the center hole of the drive disc 4, so that the drive Disc 4 is just located on the end face of left bearing 2, and can drive disc 4 to rotate by rotating rotary handle 9, and two annular grooves are arranged on the end face of drive disc 4, and two annular grooves are embedded respectively in the annular groove. The bipolar permanent magnet that two semicircular rings are formed---the first magnet 11; The groove is provided with a two-pole permanent magnet corresponding to the first magnet 11-the second magnet 12, and a fixed shaft 7 is arranged in the right support 3, and one end of the fixed shaft 7 is interference fit with the right support 3 , the other end is interference fit with the fixed disc 5, the other end of the right support 3 is equipped with a tensioning wheel shaft 19, the tensioning wheel 8 is installed on the tensioning wheel shaft 19, and is fixed by a lock nut 17, so that when the driving disc 4 When rotating, when the polarity of the first magnet 11 and the second magnet 12 are opposite, an attractive force will be generated; The right support 3 moves on the dovetail groove 1.1 of the bracket 1, so that the tension wheel 8 can move left and right to adjust the tension degree of the beaded rope, and finally realize the tension function of the diamond wire saw machine; the end surface of the drive shaft 6, The outer side of the driving disc 4 is provided with a left retaining ring 15, and the end face of the fixed shaft 7 and the outer side of the fixed disc 5 are provided with a right retaining ring 16, so that the first magnet 11 and the second magnet 12 will not be damaged due to excessive magnetic force. And combined together, the anti-rotation pin 9.1 is provided on the rotary handle 9, and the corresponding pin hole is provided on the end cover 10. After the tension adjustment is completed, the anti-rotation pin 9.1 can be inserted into the pin hole of the end cover 10 In order to prevent the driving disc 4 from rotating and changing the tension.

The working principle is as follows: When coarsely adjusting the tension force of the beaded rope, it can be realized by moving the position of the right support 3 and adjusting the distance between the left support 2 and the right support 3; When the force is fine-tuned, it can be carried out by rotating the handle 9. When the driving disc 4 rotates, when the polarities of the first magnet 11 and the second magnet 12 are completely opposite, an attractive force will be generated. At this moment, the tension force reaches a minimum. When the polarities of the magnet 11 and the second magnet 12 are completely the same, a repulsive force will be generated, and the tension force is the largest at this moment.

Claims (7)

1. A tensioning device of an underwater diamond wire saw machine, comprising a support, a tension wheel and a tension mechanism installed on the support, the support is installed on the frame of the diamond wire saw machine, the tension wheel and the beaded rope Contact, characterized in that the tensioning mechanism includes a left support and a right support, the left support is fixed on the support, the right support is located on the support and can slide relative to the left seat body, the end surface of the left support There is a drive plate, the end surface of the drive plate is provided with a first magnet; the end surface of the right support is provided with a fixed plate corresponding to the drive plate, and the end surface of the fixed plate is provided with a second magnet corresponding to the first magnet , the other end of the right support is installed with a tensioning wheel shaft, and the tensioning wheel is installed on the tensioning wheel shaft. When the driving disc rotates, the first magnet rotates and generates repulsion or suction force with the second magnet, thereby driving the right The support and the tensioning wheel move back and forth relative to the left support to realize the tension adjustment of the beaded rope. 2. The tensioning device according to claim 1, characterized in that a drive shaft is arranged in the left support, the drive shaft is supported in the left support through a bearing, and a rotary handle and an end cover are installed on one end of the drive shaft. The other end passes through the left support and is connected with the central hole of the drive disc through a spline, and a left retaining ring is set on the end face of the drive shaft and the outer side of the drive disc; a fixed shaft is arranged in the right support , one end of the fixed shaft has an interference fit with the right support, and the other end has an interference fit with the fixed disc, and a right retaining ring is set on the end face of the fixed shaft and the outer side of the fixed disc. 3. The tensioning device according to claim 1, characterized in that the end faces of the driving disc and the fixed disc are respectively provided with annular grooves for embedding the first magnet and the second magnet, the first magnet and the second magnet The second magnets are respectively embedded in the annular grooves and fixed with screws. 4. The tensioning device according to claim 3, characterized in that there are two symmetrical annular grooves, and the first magnet and the second magnet are two-pole permanent magnets, which are respectively composed of two semicircular rings. 5. The tensioning device according to claim 4, characterized in that the first magnet and the second magnet are multi-pole permanent magnets, respectively composed of S and N poles intersecting in a ring. 6. The tensioning device according to claim 2, wherein an anti-rotation pin is provided on the rotating handle, and a corresponding pin hole is provided on the end cover. 7. The tensioning device according to any one of claims 1 to 6, characterized in that a dovetail groove is provided on the bracket from left to right, and the bottoms of the left support and the right support are provided with dovetail grooves. The guide surface matched with the groove, the left support is installed in the dovetail groove and fixed by locking bolts, and the right support is installed in the dovetail groove and can slide left and right in the dovetail groove.

Images