Rotating wheel position adjusting structure of pipe bending machine

Abstract

The utility model belongs to the technical field of pipe benders, and particularly relates to a rotating wheel position adjusting structure of a pipe bender. In order to overcome the defect that the position of a rotating wheel assembly of an existing pipe bending machine is adjusted in a sliding mode, the technical scheme adopted by the utility model is that the rotating wheel orientation positioning structure of the pipe bending machine comprises a cross beam, a pair of rotating wheel assemblies are provided; the rotating wheel assembly further comprises a movable anti-disengaging piece arranged on the wheel shaft. When the movable anti-disengaging piece is located at the anti-disengaging position, at least part of the movable anti-disengaging piece is located below the cross beam, and at least part of the movable anti-disengaging piece is located outside the mounting hole in the radial direction. And when the movable anti-falling piece is located at the plugging position, the radial surface projection of the movable anti-falling piece is completely in the radial surface projection of the mounting hole. The beneficial effects of the utility model are that the device is different from an existing sliding adjustment mode; different from a conventional movable anti-falling part adopting a threaded part spiral movement mode, the movable anti-falling part does not need to be disassembled, and operation is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe bending machines, and particularly relates to a wheel position adjustment structure of a pipe bending machine. Background Art

[0002] The basic principle of an existing type of pipe bending machine is to set up two horizontally distributed wheel assemblies and a horizontal reciprocating top wheel perpendicular to the plane where the rotation axes of the two wheel assemblies are located. The wheel assembly includes a wheel with a pipe groove. The pipe to be bent (usually a copper pipe) is placed in the pipe groove of the two wheels. The top wheel is driven toward the wheel by manual or electric means, and the top wheel and the wheel squeeze the pipe to be bent back and forth to bend it.

[0003] To reduce the number of beams and runners, runners with a variety of pipe grooves of different diameters and orientations are typically used. By adjusting the left-right position of the two runners on the same beam (usually three positions or spacings are sufficient), pipes of varying diameters can be accommodated. For relevant information, please refer to the applicant's prior applications, such as Grant Publication No. CN217018110U - A Pipe Bender's Rotor Adjustment Structure and Grant Publication No. CN220760756U - A Pipe Bender's Rotor Spacing Adjustment Structure.

[0004] However, the above structures all have the following problems: the wheel assembly slides relative to the crossbeam, the sliding structure is prone to sliding unsmoothly during operation, and it is difficult to determine whether the wheel position has moved to the correct position. Summary of the Invention

[0005] The utility model aims at solving the problem that the wheel assembly of the existing pipe bending machine adjusts the position by sliding, provides a wheel position adjustment structure of the pipe bending machine, adopts a plug-in method different from sliding to adjust the wheel position, and improves the plug-in structure.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a rotating wheel position adjustment structure of a pipe bending machine, the rotating wheel position adjustment structure of the pipe bending machine includes:

[0007] The crossbeam is long and has multiple pairs of mounting holes along its length;

[0008] There is a pair of runner assemblies, each of the pair of runner assemblies includes a wheel axle and a runner rotatably arranged outside the wheel axle, the wheel axle is installed in the installation hole, and the runner is provided with pipe grooves of different diameters;

[0009] Wherein, the rotating wheel assembly further comprises a movable anti-slipping member provided on the wheel shaft, and the movable anti-slipping member switches between an anti-slipping position and an insertion and removal position;

[0010] Wherein, when the movable anti-slipping member is located at the anti-slipping position, the movable anti-slipping member is at least partially located below the crossbeam and the portion is at least partially located radially outside the mounting hole;

[0011] Wherein, when the movable anti-slipping member is located at the plugging and unplugging position, the radial surface projection of the movable anti-slipping member is entirely within the radial surface projection of the mounting hole.

[0012] The present invention provides a pipe bending machine with a wheel position adjustment structure. The crossbeam is provided with multiple pairs of mounting holes and a wheel assembly. The position of the wheel on the crossbeam is adjusted by plugging and unplugging, which is different from the existing sliding adjustment method. The anti-slip structure of the wheel assembly adopts a movable anti-slip part, which switches between an anti-slip position and a plug-in position. The movable anti-slip part changes its projection on the radial surface through movement, which is different from the conventional movable anti-slip part that adopts the spiral movement of a threaded part. There is no need to remove the movable anti-slip part, which is more convenient to operate. A pair of mounting holes has two symmetrical mounting holes. The radial surface projection refers to the projection on the radial surface of the wheel axle.

[0013] As an improvement, the rotating wheel assembly further comprises an elastic member indirectly acting on the movable anti-slip member, the elastic member being located above the crossbeam, and the elastic member generating a force on the movable anti-slip member toward the crossbeam.

[0014] As an improvement, the movable anti-slip part is rotatably provided on the wheel axle, the first direction dimension of the movable anti-slip part is larger than the diameter of the mounting hole, the second direction dimension of the movable anti-slip part perpendicular to the first direction is smaller than the diameter of the mounting hole, and the movable anti-slip part switches between the anti-slip position and the plug-in position by rotation.

[0015] As an improvement, the movable anti-slip part is rotatably connected to the wheel axle via a pin shaft; a receiving groove for the rotation of the movable anti-slip part is provided at the lower end of the wheel axle; the wheel axle is T-shaped as a whole, and the two ends of the elastic part respectively abut the wheel axle and the rotating wheel.

[0016] As an improvement, the wheel assembly also includes a shaft retaining ring provided on the wheel axle and a hole retaining ring provided in the wheel, the shaft retaining ring is located below the hole retaining ring, the wheel has a rotating connection portion located between the shaft retaining ring and the hole retaining ring, and the elastic member is located above the hole retaining ring.

[0017] As an improvement, the movable anti-slip part is a steel ball, and the wheel assembly also includes a sleeve located in the mounting hole. The wheel axle can be raised and lowered in the sleeve, and the wheel is located outside the sleeve. The diameter of the steel ball is greater than the wall thickness of the sleeve. The wheel axle is located in the sleeve, and a plug-in groove is provided on the wheel axle. A penetrating abutment hole is provided on the sleeve. The outer side of the abutment hole forms an anti-falling portion to prevent the steel ball from falling, and the steel ball switches between the anti-slip position and the plug-in position through radial movement.

[0018] As an improvement, the wheel assembly also includes an operating member that is sleeved outside the wheel axle and located above the wheel, and the elastic member is arranged between the operating member and the wheel axle; a stop block is provided at the lower end of the wheel axle, and under the action of the elastic member, the stop block abuts against the shaft sleeve.

[0019] As an improvement, the depth of the insertion groove is smaller than the diameter of the steel ball, and a portion of the steel ball is always located in the abutment hole of the sleeve.

[0020] As an improvement, the operating member is H-shaped, and the wheel assembly further includes a damping member that acts directly or indirectly on the wheel; the wheel axle is T-shaped as a whole.

[0021] As an improvement, the wheel assembly further includes a shaft retaining ring provided on the shaft sleeve, the shaft retaining ring is located above the crossbeam, the wheel is located above the shaft retaining ring, and the shaft sleeve is T-shaped as a whole.

[0022] As an improvement, the wheel position adjustment structure of the pipe bending machine also includes a pair of reinforcement blocks fixed to the crossbeam and arranged below the crossbeam, and reinforcement holes adapted to the mounting holes are provided on the reinforcement blocks, and the wheel axle is installed in the mounting holes.

[0023] The beneficial effects of the wheel position adjustment structure of the pipe bending machine of the present invention are: the position of the wheel on the crossbeam is adjusted by plugging and unplugging, which is different from the existing sliding adjustment method; the anti-slip structure of the wheel assembly adopts a movable anti-slip part, and the movable anti-slip part switches between the anti-slip position and the plug-in position; the movable anti-slip part changes its projection on the radial surface through movement, which is different from the movable anti-slip part adopting the spiral movement of the threaded part, and there is no need to remove the movable anti-slip part, which is more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural diagram of the rotor position adjustment structure of the pipe bending machine in the first embodiment of the present utility model.

[0025] Figure 2 This is a structural exploded view of the rotary wheel position adjustment structure of the pipe bending machine according to the first embodiment of the present invention.

[0026] Figure 3 It is a cross-sectional view of the rotary wheel position adjustment structure of the pipe bending machine according to the first embodiment of the present utility model.

[0027] Figure 4 This is an exploded view of the wheel assembly of the pipe bending machine according to the first embodiment of the present invention.

[0028] Figure 5 It is a three-dimensional structural diagram of the rotary wheel position adjustment structure of the pipe bending machine in the second embodiment of the present utility model.

[0029] Figure 6 This is an exploded view of the rotor position adjustment structure of the pipe bender according to the second embodiment of the present invention.

[0030] Figure 7 It is a cross-sectional view of the rotary wheel position adjustment structure of the pipe bending machine according to the second embodiment of the present utility model.

[0031] Figure 8 This is an exploded view of the wheel assembly of the pipe bending machine according to the second embodiment of the present invention.

[0032] In the figure, 01, beam; 02, runner assembly; 03, reinforcement block;

[0033] 1. Axle; 11. Plug-in slot;

[0034] 2. Rotary wheel;

[0035] 3. Movable anti-slip parts;

[0036] 4. Elastic parts;

[0037] 5. Circlip for shaft;

[0038] 6. Retaining ring for hole;

[0039] 7. Shaft sleeve; 71. Abutment hole; 72. Anti-fall portion;

[0040] 8. Operating parts;

[0041] 9. Stopper;

[0042] 10. Damping components. DETAILED DESCRIPTION

[0043] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0044] See also Figures 1 to 8The rotating wheel position adjustment structure of the pipe bender of the embodiment of the present invention comprises:

[0045] The crossbeam is long and has multiple pairs of mounting holes along its length;

[0046] There is a pair of runner assemblies, each of the pair of runner assemblies includes a wheel axle and a runner rotatably arranged outside the wheel axle, the wheel axle is installed in the installation hole, and the runner is provided with pipe grooves of different diameters;

[0047] Wherein, the rotating wheel assembly further comprises a movable anti-slipping member provided on the wheel shaft, and the movable anti-slipping member switches between an anti-slipping position and an insertion and removal position;

[0048] Wherein, when the movable anti-slipping member is located at the anti-slipping position, the movable anti-slipping member is at least partially located below the crossbeam and the portion is at least partially located radially outside the mounting hole;

[0049] Wherein, when the movable anti-slipping member is located at the plugging and unplugging position, the radial surface projection of the movable anti-slipping member is entirely within the radial surface projection of the mounting hole.

[0050] The pipe bender's wheel position adjustment structure of the present invention has multiple pairs of mounting holes on its crossbeam, and a wheel assembly is provided. The position of the wheel on the crossbeam is adjusted by plugging and unplugging, which is different from the existing sliding adjustment method. The anti-slip structure of the wheel assembly adopts a movable anti-slip part, which switches between an anti-slip position and a plug-in position. The movable anti-slip part changes its projection on the radial surface through movement, which is different from the conventional movable anti-slip part that uses a spiral motion of a threaded part. This makes it easier to operate without removing the movable anti-slip part. A pair of mounting holes has two symmetrical mounting holes.

[0051] Example 1

[0052] See also Figures 1 to 4 The present invention provides a pipe bending machine's wheel 2 position adjustment structure, the pipe bending machine's wheel 2 position adjustment structure comprising:

[0053] Beam 01 is long and has multiple pairs of mounting holes along its length.

[0054] There is a pair of runner assemblies 02, each of which includes a wheel axle 1 and a runner 2 rotatably disposed outside the wheel axle 1, the wheel axle 1 being mounted in the mounting hole, and the runner 2 having pipe grooves of different diameters;

[0055] The rotating wheel assembly 02 further includes a movable anti-slip member 3 provided on the wheel shaft 1, and the movable anti-slip member 3 switches between an anti-slip position and an insertion position;

[0056] When the movable anti-slip member 3 is located at the anti-slip position, at least a portion of the movable anti-slip member 3 is located below the crossbeam 01 and the portion is at least partially located radially outside the mounting hole.

[0057] When the movable anti-slip component 3 is located at the plug-in / pull-out position, the radial surface projection of the movable anti-slip component 3 is entirely within the radial surface projection of the mounting hole.

[0058] See also Figure 3 , the movable anti-slip part 3 on the left is in the anti-slip position, and the movable anti-slip part 3 on the right is in the plug-in position.

[0059] In this embodiment, the movable anti-slip member 3 is rotatably arranged on the wheel shaft 1, the first direction dimension of the movable anti-slip member 3 is larger than the diameter of the mounting hole, and the second direction dimension of the movable anti-slip member 3 perpendicular to the first direction is smaller than the diameter of the mounting hole. Figure 3 The middle direction is the width direction of the drawing, that is, the left and right direction, and the second direction dimension is Figure 3 The middle is the length of the drawing, that is, the up and down direction.

[0060] In this embodiment, the movable anti-slip member 3 is rotatably connected to the wheel shaft 1 via a pin.

[0061] In this embodiment, a receiving groove for the movable anti-slip component 3 to rotate is opened at the lower end of the wheel axle 1. The receiving groove is located in the radial middle of the wheel axle 1, and the vertical sides of the movable anti-slip component 3 are both vertical side walls of the receiving groove.

[0062] In this embodiment, the movable anti-slip member 3 is generally rectangular. In other embodiments, the movable anti-slip member 3 may have other shapes. In other embodiments, a torsion spring may be provided on the movable anti-slip member 3 so that when the pressure wheel shaft 1 is lowered, the movable anti-slip member 3 automatically rotates 90° due to the action of the torsion spring, eliminating the need to operate the movable anti-slip member 3 during removal.

[0063] In this embodiment, the rotating wheel assembly 02 further includes an elastic member 4 that indirectly acts on the movable anti-slip member 3 . The elastic member 4 is located above the crossbeam 01 . The elastic member 4 generates a force on the movable anti-slip member 3 toward the crossbeam 01 .

[0064] In this embodiment, the elastic member 4 is a compression spring.

[0065] In this embodiment, the axle 1 is T-shaped as a whole, and the two ends of the elastic member 4 respectively abut the axle 1 and the rotating wheel 2. The outer diameter of the horizontal portion of the upper end of the axle 1 is larger than the hole diameter of the upper end of the rotating wheel 2, thereby preventing the axle 1 from falling.

[0066] In this embodiment, the wheel assembly 02 further includes a shaft retaining ring 5 provided on the wheel axle 1 and a hole retaining ring 6 provided in the wheel 2. The shaft retaining ring 5 is located below the hole retaining ring 6. The wheel 2 has a rotational connection portion located between the shaft retaining ring 5 and the hole retaining ring 6. The elastic member 4 is located above the hole retaining ring 6. The shaft retaining ring 5 and the hole retaining ring 6 prevent the wheel 2 from falling out while ensuring smooth rotation of the wheel 2 relative to the wheel axle 1. The lower end of the elastic member 4 abuts the hole retaining ring 6.

[0067] In this embodiment, the mating portion of the rotating connection portion of the axle 1 and the wheel 2 is in an I-shape. The I-shape reduces the contact area between the axle 1 and the wheel 2, so that the wheel 2 can rotate smoothly relative to the axle 1 while the wheel 2 will not deviate relative to the axle 1 (when bending the pipe, the axle 1 and the wheel 2 will deviate along with the beam 01, but the axle 1 and the wheel 2 are always concentric).

[0068] In this embodiment, the position adjustment structure of the pipe bender's wheel 2 also includes a pair of reinforcement blocks 03 located below the crossbeam 01 and fixedly connected to the crossbeam 01. The reinforcement blocks 03 have reinforcement holes that match the mounting holes, and the axle 1 is installed in the mounting holes. Because the height or thickness of the crossbeam 01 is generally small, due to the principle of leverage, when the force exerted on the axle 1 by the top wheel of the pipe bender is transmitted to the crossbeam 01, the smaller area of ​​the crossbeam 01 is subjected to a greater force, which makes the crossbeam 01 and the axle 1 susceptible to deformation and wear, affecting their service life. By providing the reinforcement blocks 03 below the crossbeam 01, the primary force is borne by the reinforcement blocks 03, thereby extending the service life of the crossbeam 01 and the axle 1.

[0069] In this embodiment, the reinforcement block 03 is fixed to the crossbeam 01 by screws.

[0070] In this embodiment, the crossbeam 01 is one piece. In other embodiments, the crossbeam 01 can also be two pieces, and the two crossbeams 01 are swingably connected to the base of the pipe bending machine to achieve the storage of the crossbeam 01.

[0071] In this embodiment, the assembly process of the wheel assembly 02 is: pre-assemble the wheel axle 1, the movable anti-slip part 3, and the elastic part 4 together, put the hole retaining ring 6 on the wheel 2, and then make the second direction with a smaller size of the movable anti-slip part 3 along the radial direction of the beam 01. At this time, insert the wheel axle 1, the movable anti-slip part 3, and the elastic part 4 into the wheel 2. After being inserted into place, install the shaft retaining ring 5 on the wheel axle 1 to complete the assembly of the wheel assembly 02.

[0072] The working principle of the position adjustment structure of the runner 2 of the pipe bending machine of this embodiment is as follows: Assuming that the two runner assemblies 02 are in the initial state as Figure 3As shown in the middle left half of the figure, at this time, under the action of the elastic member 4, the force generated by the elastic member 4 is transmitted to the movable anti-slip member 3 through the wheel axle 1 and the pin, so that the wheel axle 1 cannot produce an upward displacement, that is, the wheel axle 1 cannot be pulled out. When it is necessary to change the position of the rotating wheel assembly 02 on the beam 01, the wheel axle 1 is pressed down to overcome the action of the elastic member 4, and the movable anti-slip member 3 is released from contact with the beam 01. After the wheel axle 1 is lowered enough, the movable anti-slip member 3 is rotated 90°, so that the state of the movable anti-slip member 3 is changed to Figure 3 As shown in the middle right half of the figure, the movable anti-slip component 3 can enter the mounting hole of the beam 01. At this time, the wheel assembly 02 can be lifted to separate the wheel assembly 02 from the beam 01, and then the wheel assembly 02 can be aligned and inserted into the mounting hole of the beam 01. After being inserted into place, the movable anti-slip component 3 is rotated 90° so that the first direction with the larger size of the movable anti-slip component 3 is along the radial direction of the mounting hole. At this time, the wheel assembly 02 is released, and under the action of the elastic component 4, the wheel axle 1 and the movable anti-slip component 3 move up, and the movable anti-slip component 3 abuts the reinforcement block 03.

[0073] The beneficial effects of the position adjustment structure of the wheel 2 of the pipe bending machine of the first embodiment of the present invention are: the position of the wheel 2 on the beam 01 is adjusted by plugging and unplugging, which is different from the existing sliding adjustment method; the anti-slip structure of the wheel assembly 02 adopts a movable anti-slip part 3, and the movable anti-slip part 3 switches between the anti-slip position and the plug-in position by rotation; the movable anti-slip part 3 changes its projection on the radial plane by rotation, which is different from the movable anti-slip part 3 adopting the spiral motion of the threaded part, and there is no need to remove the movable anti-slip part 3, which is more convenient to operate; the reinforcement block 03 is provided to improve the service life of the beam 01 and the wheel axle 1.

[0074] Example 2

[0075] See also Figures 5 to 8 The present invention provides a second pipe bending machine runner 2 position adjustment structure, the pipe bending machine runner 2 position adjustment structure includes:

[0076] Beam 01 is long and has multiple pairs of mounting holes along its length.

[0077] There is a pair of runner assemblies 02, each of which includes a sleeve 7, an axle 1, and a runner 2. The sleeve 7 is installed in the installation hole, the axle 1 is liftably arranged in the sleeve 7, the runner 2 is located outside the sleeve 7, and the runner 2 is provided with pipe grooves of different diameters;

[0078] The rotating wheel assembly 02 further includes a movable anti-slip member 3 provided on the wheel shaft 1, and the movable anti-slip member 3 switches between an anti-slip position and an insertion position;

[0079] When the movable anti-slip member 3 is in the anti-slip position, at least a portion of the movable anti-slip member 3 is located below the crossbeam 01 and at least a portion of the portion is located radially outside the mounting hole, so that the movable anti-slip member 3 abuts against the crossbeam 01.

[0080] When the movable anti-slip part 3 is located at the plug-in / pull-out position, the radial surface projection of the movable anti-slip part 3 is entirely within the radial surface projection of the mounting hole, so that the movable anti-slip part 3 can completely enter the mounting hole.

[0081] In this embodiment, the movable anti-drop member 3 is a steel ball, the diameter of which is greater than the wall thickness of the sleeve 7. The wheel axle 1 defines an insertion slot 11, and the sleeve 7 defines an abutment hole 71. The outer side of the abutment hole 71 forms an anti-drop portion 72 to prevent the steel ball from falling. The anti-drop portion 72 does not protrude from the outer wall of the sleeve 7.

[0082] In this embodiment, the steel ball switches between the anti-slip position and the insertion / extraction position through radial movement. When the steel ball receives the force from the reinforcement block 03 and moves radially into the insertion / extraction slot 11, the steel ball is in the insertion / extraction position. When the steel ball is completely removed from the insertion / extraction slot 11, the steel ball is in the anti-slip position (at this time, because the diameter of the steel ball is greater than the wall thickness of the sleeve 7, a portion of the steel ball protrudes from the sleeve 7). Under the action of the axle 1, the steel ball moves out of the insertion / extraction slot 11 of the axle 1 and partially moves to the anti-fall portion 72 outside the abutment hole 71 of the sleeve 7, at which point it is in the anti-slip position; under the action of the force from the reinforcement block 03, the steel ball partially enters the insertion / extraction slot 11 of the axle 1. There are two steel balls. The depth of the insertion / extraction slot 11 is less than the diameter of the steel ball, and a portion of the steel ball is always located in the abutment hole 71 of the sleeve 7.

[0083] In other embodiments, the steel ball may also have other structures such as a spherical portion and a cylindrical portion.

[0084] In this embodiment, the insertion groove 11 is chamfered to facilitate the movement of the steel ball from the insertion groove 11 to the abutment hole 71. In other embodiments, the insertion groove 11 can also be a tapered groove as a whole.

[0085] In this embodiment, the wheel assembly 02 further includes an operating member 8 that is sleeved outside the wheel axle 1 and located above the wheel 2 , and the elastic member 4 is disposed between the operating member 8 and the wheel axle 1 .

[0086] In this embodiment, a stopper 9 is provided at the lower end of the axle 1. Under the action of the elastic member 4, the stopper 9 abuts against the shaft sleeve 7. The stopper 9 is threadedly connected to the axle 1. The outer diameter of the stopper 9 is larger than the aperture of the shaft sleeve 7 and smaller than the aperture of the mounting hole of the crossbeam 01.

[0087] In this embodiment, the operating member 8 is H-shaped. A damping element 10 is disposed between the sleeve 7 and the operating member 8. This damping element 10 abuts against the rotating wheel 2 and generates damping, preventing the rotating wheel 2 from rotating too easily. The axle 1 is generally T-shaped. The damping element 10 is located below the elastic member 4. The rotating wheel 2 and the sleeve 7 have a clearance fit, and the damping element 10 directly acts on the rotating wheel 2, thereby ensuring moderate rotational damping of the rotating wheel 2.

[0088] In this embodiment, the wheel assembly 02 further includes a shaft retaining ring 5 provided on the shaft sleeve 7. The shaft retaining ring 5 is located above the crossbeam 01. The wheel 2 is located above the shaft retaining ring 5. The shaft sleeve 7 is T-shaped as a whole.

[0089] In this embodiment, the position adjustment structure of the wheel 2 of the pipe bending machine also includes a pair of reinforcement blocks 03 arranged below the crossbeam 01 and fixed to the crossbeam 01. The reinforcement blocks 03 are provided with reinforcement holes adapted to the mounting holes, and the wheel axle 1 and the bushing 7 are installed in the reinforcement holes.

[0090] In this embodiment, the assembly process of the wheel assembly 02 is: pre-assemble the sleeve 7, the shaft retaining ring 5 and the wheel 2 together, assemble the axle 1, the elastic member 4, the operating member 8 and the damping generating member 10 together, insert the axle 1 into the sleeve 7, and then install the steel ball into the abutment hole 711 of the sleeve 7 and the plug-in groove 11 of the axle 1, and process the anti-fall part 72 on the sleeve 7, and finally install the stop block 9 on the axle 1 to complete the assembly of the wheel assembly 02.

[0091] The working principle of the position adjustment structure of the runner 2 of the pipe bending machine of this embodiment is as follows: Assuming that the two runner assemblies 02 are in the initial state as Figure 7 As shown in the middle left half of the figure, at this time, under the action of the elastic member 4, the position of the wheel axle 1 is maintained. Since the wheel axle 1 presses against the movable anti-slip member 3, the position of the movable anti-slip member 3 is also maintained in the abutment hole 71 of the shaft sleeve 7, so that the wheel axle 1 cannot produce an upward displacement, that is, the wheel axle 1 cannot be pulled out; when it is necessary to change the position of the rotating wheel assembly 02 on the crossbeam 01, the wheel axle 1 is pressed down by overcoming the action of the elastic member 4. After the wheel axle 1 drops enough, the state of the movable anti-slip member 3 is changed to Figure 7As shown in the middle right half of the figure, at this time, the relative position between the wheel axle 1 and the sleeve 7 is maintained, and the entire wheel assembly 02 is lifted. During the lifting of the sleeve 7, the steel ball is subjected to the force from the reinforcing block 03, and the steel ball moves from the abutment hole 71 of the sleeve 7 to the insertion and extraction groove 11 of the wheel axle 1. At this time, the steel ball no longer plays a restrictive role, and the entire wheel assembly 02 can be separated from the crossbeam 01; then the wheel assembly 02 is realigned and inserted into the corresponding mounting hole of the crossbeam 01. When the sleeve 7 is inserted into place, the wheel axle 1 is pressed down to remove the steel ball from the insertion and extraction groove 11 in the wheel axle 1. At this time, the wheel axle 1 is released. Under the action of the elastic member 4, the wheel axle 1 rises, and the insertion and extraction groove 11 of the wheel axle 1 rises above the steel ball. During the rising process of the wheel axle 1, the outer wall of the wheel axle 1 can abut against the steel ball to ensure that the steel ball is in an anti-slip position.

[0092] The beneficial effects of the position adjustment structure of the wheel 2 of the pipe bending machine of the second embodiment of the present invention are: the position of the wheel 2 on the beam 01 is adjusted by plugging and unplugging, which is different from the existing sliding adjustment method; the movable anti-slip component 3 of the anti-slip structure of the wheel assembly 02 adopts a steel ball, and the steel ball switches between the anti-slip position and the plug-in position through axial and radial movement; the position switching of the steel ball is achieved by the plug-in groove 11 opened on the wheel axle 1, the abutment hole 71 opened on the shaft sleeve 7 and the elastic member 4; and the reinforcement block 03 is provided to improve the service life of the beam 01 and the wheel axle 1.

[0093] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. The wheel position adjustment structure of the pipe bender is characterized by: The runner position adjustment structure of the pipe bender includes: The crossbeam (01) is in the shape of an elongated strip and has a plurality of pairs of mounting holes along its length direction; There is a pair of runner assemblies (02), each of the pair of runner assemblies (02) comprising a wheel axle (1) and a runner (2) rotatably arranged outside the wheel axle (1), the wheel axle (1) being installed in the installation hole, and the runner (2) being provided with pipe grooves of different pipe diameters; The rotating wheel assembly (02) further comprises a movable anti-slipping member (3) provided on the wheel shaft (1), wherein the movable anti-slipping member (3) switches between an anti-slipping position and an insertion / extraction position; Wherein, when the movable anti-slipping member (3) is located at the anti-slipping position, the movable anti-slipping member (3) is at least partially located below the crossbeam (01), and the portion is at least partially located radially outside the mounting hole; When the movable anti-slip component (3) is located at the plug-in / pull-out position, the radial surface projection of the movable anti-slip component (3) is entirely within the radial surface projection of the mounting hole.

2. The wheel position adjustment structure of the pipe bender according to claim 1, characterized in that: The rotating wheel assembly (02) further comprises an elastic member (4) indirectly acting on the movable anti-slip member (3), wherein the elastic member (4) is located above the crossbeam (01), and the elastic member (4) generates a force on the movable anti-slip member (3) toward the crossbeam (01).

3. The wheel position adjustment structure of the pipe bender according to claim 2, characterized in that: The movable anti-slip component (3) is rotatably arranged on the wheel shaft (1); a first direction dimension of the movable anti-slip component (3) is larger than the diameter of the mounting hole; and a second direction dimension of the movable anti-slip component (3) perpendicular to the first direction is smaller than the diameter of the mounting hole.

4. The wheel position adjustment structure of the pipe bender according to claim 3, characterized in that: The movable anti-slip member (3) is rotatably connected to the wheel shaft (1) via a pin; and / or, The lower end of the wheel shaft (1) is provided with a receiving groove for the movable anti-slip member (3) to rotate; and / or, The wheel axle (1) is in a T-shape as a whole, and the two ends of the elastic member (4) respectively abut against the wheel axle (1) and the rotating wheel (2).

5. The wheel position adjustment structure of the pipe bender according to claim 3, characterized in that: The rotating wheel assembly (02) further comprises a shaft retaining ring (5) provided on the wheel axle (1) and a hole retaining ring (6) provided in the rotating wheel (2), wherein the shaft retaining ring (5) is located below the hole retaining ring (6), and the rotating wheel (2) has a rotating connection portion located between the shaft retaining ring (5) and the hole retaining ring (6), and the elastic member (4) is located above the hole retaining ring (6).

6. The wheel position adjustment structure of the pipe bender according to claim 2, characterized in that: The movable anti-slip component (3) is a steel ball. The rotating wheel assembly (02) further includes a shaft sleeve (7) located in the mounting hole. The wheel axle (1) is arranged in the shaft sleeve (7) in a liftable manner. The rotating wheel (2) is located outside the shaft sleeve (7). The diameter of the steel ball is greater than the wall thickness of the shaft sleeve (7). The wheel axle (1) is located in the shaft sleeve (7). A plug-in slot (11) is provided on the wheel axle (1). An abutment hole (71) is provided on the shaft sleeve (7). An anti-falling portion (72) for preventing the steel ball from falling is formed on the outer side of the abutment hole (71). The steel ball switches between the anti-slip position and the plug-in position through radial movement. When the steel ball protrudes from the shaft sleeve (7), it is located in the anti-slip position.

7. The rotating wheel position adjustment structure of the pipe bender according to claim 6, characterized in that: The rotating wheel assembly (02) further comprises an operating member (8) which is sleeved outside the wheel axle (1) and is located above the rotating wheel (2), and the elastic member (4) is arranged between the operating member (8) and the wheel axle (1); and / or, A stopper (9) is provided at the lower end of the wheel axle (1), and under the action of the elastic member (4), the stopper (9) abuts against the shaft sleeve (7); and / or, The depth of the insertion groove (11) is smaller than the diameter of the steel ball, and a portion of the steel ball is always located in the abutment hole (71) of the shaft sleeve (7).

8. The wheel position adjustment structure of the pipe bender according to claim 7, characterized in that: The operating member (8) is H-shaped, and the rotating wheel assembly (02) further includes a damping generating member (10) acting directly or indirectly on the rotating wheel (2); and / or, The wheel axle (1) is T-shaped as a whole.

9. The rotating wheel position adjustment structure of the pipe bender according to claim 6, characterized in that: The wheel assembly (02) further comprises a shaft retaining ring (5) provided on the shaft sleeve (7); the shaft retaining ring (5) is located above the crossbeam (01); the wheel (2) is located above the shaft retaining ring (5); and the shaft sleeve (7) is T-shaped as a whole.

10. The rotating wheel position adjustment structure of the pipe bender according to claim 1, characterized in that: The wheel position adjustment structure of the pipe bending machine further comprises a pair of reinforcement blocks (03) arranged below the crossbeam (01) and fixedly connected to the crossbeam (01); the reinforcement blocks (03) are provided with reinforcement holes adapted to the mounting holes, and the wheel axle (1) is mounted in the mounting holes.

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