Transmission shaft straightening machine

Abstract

The utility model provides a transmission shaft straightening machine which comprises a shell, a connecting pipe is arranged on a bottom plate of the shell and used for enabling a transmission shaft to penetrate through the straightening machine in parallel in connecting spaces among parts, and a straightening assembly used for straightening the transmission shaft is arranged in the center of the bottom plate of the shell. The rolling wheels are rotationally connected to the rolling wheel frame, and the rolling wheel frame is fixedly connected to the bottom plate of the shell and used for rolling the transmission shaft during straightening; a plurality of nozzles are arranged in the quenching pipe, and the quenching pipe is used for quenching the transmission shaft before straightening; according to the utility model, a plurality of rows of nozzles are uniformly mounted on the inner wall of the middle upper half part of the quenching pipe, and the rollers are arranged on the two sides of the device to drive the transmission shaft to rotate, so that the transmission shaft in the quenching pipe can be continuously quenched, and the first straightening wheel and the second straightening wheel rotate and extrude in opposite directions to straighten the transmission shaft; and the transmission shaft can move forwards under the action of friction force, so that different parts of the transmission shaft are gradually straightened.

Description

Technical Field

[0001] The utility model relates to the technical field of straightening machines, in particular to a transmission shaft straightening machine. Background Art

[0002] In today's machinery industry, drive shafts are important components that are widely used, especially in the booming industries such as heavy-duty transport vehicles, transport ships, and oil exploration. Drive shafts will bend and deform under natural conditions, external forces, and during production and processing. In particular, when shaft parts are bent and deformed, the power transmission between parts will be affected. Therefore, it is often necessary to use a straightening device to straighten the drive shaft. The drive shaft is easily shaken and offset by force, affecting subsequent processing. In the existing technology, the straightening method is to directly straighten the shaft parts through a straightening machine. After the curved surface of the shaft is straightened, fine cracks will appear on the curved surface, affecting the life of the shaft parts.

[0003] In order to solve the above-mentioned problem of "fine cracks on the curved surface", it was found through search that: the application number is, and a disclosed one is CN202322737898.8, which includes a straightening frame, on which are provided: straightening wheels, a loading frame, a quenching unit, a straightening rolling wheel, a pressure wheel frame, a pressure wheel hydraulic cylinder, a roller motor, and a controller; there are two groups of straightening wheels 2, and the two groups of straightening wheels are parallel to each other; the two groups of straightening wheels are respectively fixed to the straightening frame through the lower wheel frames at both ends; a nozzle is provided in the quenching unit, and the nozzle is provided between the two groups of straightening wheels; the straightening rolling wheel is provided directly above the nozzle; the shafts at both ends of the straightening rolling wheel are connected to the pressure wheel frame; the pressure wheel frame is connected to the upper beam of the straightening frame through the pressure wheel hydraulic cylinder; the roller motor is provided on the pressure wheel frame on one side; the main shaft of the roller motor is connected to the wheel axle of the straightening rolling wheel.

[0004] However, when the above-mentioned utility model is in use, it can only straighten a limited length of the transmission shaft. If the transmission shaft exceeds the length of the pressure wheel frame, it cannot be effectively straightened. At the same time, the roller is used to extrude the entire transmission shaft, the force is dispersed, and the straightening efficiency is low; and the quenching nozzles are arranged in a row, and the heating of the transmission shaft is not concentrated, and the heating rate is slow. Utility Model Content

[0005] The purpose of the present invention is to provide a transmission shaft straightening machine to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A transmission shaft straightening machine, comprising:

[0008] A housing, wherein the inner cavity of the housing has a partition, and the bottom plate of the housing has a connecting pipe, the connecting pipe is fixedly connected to the bottom plate of the housing through a support column, and is used to connect the spaces between the components so that the transmission shaft passes through the straightening machine in parallel, and the center of the bottom plate of the housing has a straightening assembly for straightening the transmission shaft;

[0009] A roller, the roller being rotatably connected to a roller frame, the roller frame being fixedly connected to the bottom plate of the housing, and being used for rolling the transmission shaft during straightening;

[0010] A quenching tube has a base below the quenching tube fixedly connected to the bottom plate of the shell, and a plurality of nozzles are arranged inside the quenching tube for quenching the transmission shaft before straightening.

[0011] Preferably, the straightening assembly includes straightening wheels, which are divided into a first straightening wheel and a second straightening wheel. The first straightening wheel is rotatably connected to the third drive device via a rotating shaft, and the second straightening wheel is rotatably connected to the second drive device via a rotating shaft.

[0012] Preferably, the second driving device is fixedly connected to the bottom plate of the housing, the third driving device is fixedly connected to the lower end surface of the connecting plate, and the upper end surface of the connecting plate has a spring rod that plays a shock-absorbing and rebounding role.

[0013] Preferably, the upper end surface of the spring rod is connected to the cylinder, and the upper end surface of the cylinder is fixedly connected to the lower end surface of the top plate of the shell, which is used to control the straightening component to rise or fall to straighten the drive shaft.

[0014] Preferably, a fuel chamber is provided inside the base below the quenching tube, a combustible gas inlet and a combustion-supporting gas inlet are provided on the inner wall of the fuel chamber, and a vacuum pump is connected to a pipe on the other inner wall of the fuel chamber.

[0015] Preferably, the top pipe of the air extractor is connected to the air supply pipe on the inner wall of the quenching tube, the air supply pipe extends into the nozzle, and the front end of the nozzle is provided with an ignition coil.

[0016] Preferably, one side of the roller frame is provided with a first driving device, and the first driving device penetrates the roller frame through a roller shaft and is rotatably connected to the roller.

[0017] Preferably, the roller frame has two rollers therein, and the two rollers rotate in the same direction under the drive of the first driving device to drive the transmission shaft to continuously rotate in opposite directions.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] In the utility model, the spring rod between the cylinder and the connecting plate will apply a pre-straightening force to the transmission shaft in advance, so that the force output by the cylinder is directly transmitted to the first straightening wheel through the spring rod, so that the first straightening wheel straightens the transmission shaft. At the same time, due to the roller, the transmission shaft is also slowly rotating, so that the straightening component can straighten the transmission shaft more comprehensively. At the same time, the transmission shaft is clamped between the first straightening wheel and the second straightening wheel. The first straightening wheel rotates in a clockwise direction, and the second straightening wheel rotates in the opposite direction. The transmission shaft will move forward due to the friction force, and different parts of the transmission shaft are straightened. At the same time, a section of the transmission shaft is straightened in a concentrated manner, and the force concentration efficiency is high.

[0020] The utility model has multiple rows of nozzles evenly installed on the inner wall of the upper half of the quenching tube, which can continuously quench the transmission shaft in the quenching tube. At the same time, there are rollers on both sides of the device. The two rollers are installed in the roller frame and rotate in the same direction under the drive of the first driving device. The transmission shaft is clamped between the two rollers due to the friction force of the roller rotation, and the transmission shaft will continue to rotate in the opposite direction, thereby realizing rapid and uniform quenching of the transmission shaft by the nozzle, and avoiding cracks on the shaft surface during the subsequent cold processing straightening process, which affects the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a front view of the overall structure of the utility model;

[0023] Figure 3 This is a cross-sectional view of the quenching tube of the utility model;

[0024] Figure 4 This is a front view of the straightening assembly of the utility model;

[0025] Figure 5 This is a side view of the straightening assembly of the utility model;

[0026] Figure 6 This is a schematic diagram of the rotation of the roller and the transmission shaft of the utility model;

[0027] In the figure: 1-housing, 101-partition, 2-straightening assembly, 201-cylinder, 202-spring rod, 203-connecting plate, 204-first straightening wheel, 205-second straightening wheel, 3-connecting pipe, 301-support column, 302-drive shaft inlet, 303-drive shaft outlet, 4-roller frame, 401-roller, 402-roller shaft, 5-first drive device, 6-quenching tube, 601-fuel chamber, 602-combustible gas inlet, 603-combustion-supporting gas inlet, 604-vacuum pump, 605-gas pipe, 606-nozzle, 607-ignition coil, 7-second drive device, 8-third drive device, 9-drive shaft. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example:

[0030] See also Figures 1 to 6 , the utility model provides a technical solution:

[0031] A transmission shaft straightening machine, comprising:

[0032] A housing 1 having an inner cavity with a partition 101 and a bottom plate of the housing 1 having a connecting pipe 3 fixedly connected to the bottom plate of the housing 1 via a support column 301, for connecting spaces between the various components so that the drive shaft 9 passes parallel to the straightening machine. A straightening assembly 2 for straightening the drive shaft 9 is provided at the center of the bottom plate of the housing 1;

[0033] Roller 401, the roller 401 is rotatably connected to the roller frame 4, the roller frame 4 is fixedly connected to the bottom plate of the housing 1, and is used to roll the transmission shaft 9 during straightening;

[0034] The quenching tube 6 has a base fixedly connected to the bottom plate of the shell 1. The quenching tube 6 has multiple nozzles 606 inside, which are used to quench the drive shaft 9 before straightening.

[0035] In this embodiment, the drive shaft 9 to be straightened is sent into the device through the drive shaft inlet 302. Since the quenching tube 6 is located in front of the straightening component 2, it contacts the drive shaft 9 before the straightening component 2. Multiple rows of nozzles 606 are evenly installed on the inner wall of the upper half of the quenching tube 6. The nozzles 606 can continuously quench the drive shaft 9 in the quenching tube 6.

[0036] At the same time, there are rollers 401 on both sides of the device. Two rollers 401 are installed in the roller frame 4. Under the drive of the first driving device 5, the rollers 401 rotate in the same direction. The transmission shaft 9 is clamped between the two rollers 401 due to the friction between them. Under the influence of the friction force of the rollers 401, the transmission shaft 9 will continue to rotate in the opposite direction, thereby achieving uniform quenching of the transmission shaft 9 by the nozzle 606, avoiding cracks on the shaft surface during subsequent cold processing straightening, which affects the service life.

[0037] Specifically, such as Figure 3 As shown, there is a fuel chamber 601 inside the base below the quenching tube 6, and a combustible gas inlet 602 and a combustion-supporting gas inlet 603 are provided on the inner wall of the fuel chamber 601. The combustible gas and the combustion-supporting gas are first mixed in the fuel chamber 601, and then drawn into the gas pipe 605 through a vacuum pump 604 connected to a pipe on the other inner wall of the fuel chamber 601.

[0038] Specifically, the top pipe of the air extractor 604 is connected to the air delivery pipe 605 on the inner wall of the quenching tube 6 , and the air delivery pipe 605 extends into the nozzle 606 . The front end of the nozzle 606 has an ignition coil 607 .

[0039] Specifically, one side of the roller frame 4 has a first driving device 5, which penetrates the roller frame 4 through the roller shaft 402 and is rotatably connected to the roller 401. The rotation speed of the roller 401 is slow, so that the rotation speed of the driving shaft 9 is also slow, preventing the transmission shaft from being subjected to excessive force at the same time and jumping off the straightening machine.

[0040] Specifically, the roller frame 4 has two rollers 401 therein. The two rollers 401 rotate in the same direction under the drive of the first driving device 5 to drive the transmission shaft 9 to continuously rotate in opposite directions.

[0041] In this embodiment, the second drive device 7 and the third drive device 8 respectively drive the second straightening wheel 205 and the first straightening wheel 204 to rotate, and the cylinder 201 slowly pushes the first straightening wheel 204 downward; the spring rod 202 between the cylinder 201 and the connecting plate 203 will pre-apply a pre-straightening force to the drive shaft 9, and the cylinder 201 then slowly continues to move downward, so that the force output by the cylinder 7 is directly transmitted to the first straightening wheel 204 through the spring rod 202, so that the first straightening wheel 204 straightens the drive shaft 9. At the same time, due to the roller 402, the drive shaft 9 is also rotating slowly, so that the straightening component 2 can more comprehensively straighten the drive shaft 9.

[0042] The transmission shaft 9 is clamped between the first straightening wheel 204 and the second straightening wheel 205. The first straightening wheel 204 rotates in the clockwise direction, and the second straightening wheel 205 rotates in the opposite direction. Due to the friction force, the transmission shaft 9 will move toward the transmission shaft outlet 303 to straighten different parts of the transmission shaft 9. Then the transmission shaft 9 passes through the left roller 401 and the left connecting pipe 3 and is sent out of the straightening machine from the transmission shaft outlet 303.

[0043] Specifically, the straightening assembly 2 includes straightening wheels, which are divided into a first straightening wheel 204 and a second straightening wheel 205. The first straightening wheel 204 is rotatably connected to the third drive device 8 via a rotating shaft, and the second straightening wheel 205 is rotatably connected to the second drive device 7 via a rotating shaft.

[0044] Specifically, the second driving device 7 is fixedly connected to the bottom plate of the housing 1, and the third driving device 8 is fixedly connected to the lower end surface of the connecting plate 203. The upper end surface of the connecting plate 203 has a spring rod 202 that plays a shock-absorbing and rebounding role.

[0045] Specifically, the upper end surface of the spring rod 202 is connected to the cylinder 201 , and the upper end surface of the cylinder 201 is fixedly connected to the lower end surface of the top plate of the housing 1 , and is used to control the straightening component 2 to rise or fall to straighten the drive shaft 9 .

[0046] The remaining undescribed parts of the present invention are the same as the prior art, or are well-known technologies or can be implemented by using the prior art, and will not be described in detail here.

[0047] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transmission shaft straightening machine, characterized in that: include: A housing (1), wherein the inner cavity of the housing has a partition (101), and a connecting pipe (3) is provided on the bottom plate of the housing (1), wherein the connecting pipe (3) is fixedly connected to the bottom plate of the housing (1) via a support column (301) and is used to connect spaces between the components so that the transmission shaft (9) passes through the straightening machine in parallel, and a straightening assembly (2) for straightening the transmission shaft (9) is provided at the center of the bottom plate of the housing (1); A roller (401), the roller (401) being rotatably connected to a roller frame (4), the roller frame (4) being fixedly connected to the bottom plate of the housing (1), and being used for rolling the transmission shaft (9) during straightening; A quenching tube (6) has a base below the quenching tube (6) fixedly connected to the bottom plate of the shell (1), and a plurality of nozzles (606) are provided inside the quenching tube (6) for quenching the transmission shaft (9) before straightening.

2. A transmission shaft straightening machine according to claim 1, characterized in that: The straightening assembly (2) comprises straightening wheels, which are divided into a first straightening wheel (204) and a second straightening wheel (205). The first straightening wheel (204) is rotatably connected to a third driving device (8) via a rotating shaft, and the second straightening wheel (205) is rotatably connected to a second driving device (7) via a rotating shaft.

3. The transmission shaft straightening machine according to claim 2, characterized in that: The second drive device (7) is fixedly connected to the bottom plate of the housing (1), and the third drive device (8) is fixedly connected to the lower end surface of the connecting plate (203). The upper end surface of the connecting plate (203) has a spring rod (202) that plays a role in shock absorption and rebound.

4. A transmission shaft straightening machine according to claim 3, characterized in that: The upper end surface of the spring rod (202) is connected to the cylinder (201), and the upper end surface of the cylinder (201) is fixedly connected to the lower end surface of the top plate of the housing (1) for controlling the straightening assembly (2) to rise or fall to straighten the transmission shaft (9).

5. The transmission shaft straightening machine according to claim 1, characterized in that: A fuel chamber (601) is provided inside the base below the quenching tube (6). A combustible gas inlet (602) and a combustion-supporting gas inlet (603) are provided on the inner wall of the fuel chamber (601). A vacuum pump (604) is connected to a pipe on the other inner wall of the fuel chamber (601).

6. The transmission shaft straightening machine according to claim 5, characterized in that: The top pipe of the air extractor (604) is connected to the air delivery pipe (605) on the inner wall of the quenching tube (6), and the air delivery pipe (605) extends into the nozzle (606). The front end of the nozzle (606) is provided with an ignition coil (607).

7. The transmission shaft straightening machine according to claim 1, characterized in that: One side of the roller frame (4) is provided with a first driving device (5), and the first driving device (5) penetrates the roller frame (4) through a roller shaft (402) and is rotationally connected to the roller (401).

8. The transmission shaft straightening machine according to claim 7, characterized in that: The roller frame (4) has two rollers (401) therein. The two rollers (401) rotate in the same direction under the drive of the first driving device (5) to drive the transmission shaft (9) to continuously rotate in opposite directions.

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