Roller way conveying device for steel members

Abstract

The utility model discloses a steel member roller way conveying device which comprises a supporting frame, the top of the supporting frame is rotationally connected with two roller way conveying assemblies, one side of the middle of each roller way conveying assembly is provided with a first gear motor, and the lower portion of each first gear motor is in transmission connection with a first transmission assembly. A second transmission assembly is arranged on one side of the first transmission assembly, a coupling mechanism is arranged between the first transmission assembly and the second transmission assembly, a displacement assembly used for moving the second transmission assembly is arranged at the bottom of the second transmission assembly, a lifting assembly is arranged at the top of the displacement assembly, and a second gear motor is arranged at the top of the lifting assembly. The second transmission assembly and the first transmission assembly are in transmission connection between the two roller way conveying assemblies through chain wheel and chain sets respectively, the conveying direction of a single-side roller way is changed, the requirements of different production modes are met, and the use limitation that only two rows of roller ways of an original roller way conveying device can operate in the same direction is broken through.

Description

Technical Field

[0001] The utility model relates to the technical field of material transportation, and particularly relates to a roller conveyor device for steel members. Background Art

[0002] During the production and manufacturing process of steel structure members, processes such as cutting, forming, straightening, and assembling are usually involved. Transmission equipment is indispensable between these process steps. One of the most common transmission equipment in this field is the conveyor roller path, especially in the C-shaped steel production line, where the workpiece transportation is even more inseparable from the conveyor roller path.

[0003] Previously, single-roller conveyor was generally used for roller path transportation, and only one piece could be transported at a time. With the increase in demand, the production volume also increased accordingly. Single-roller conveyor can no longer meet the production requirements. At the same time, the specifications of steel structures have gradually become larger, resulting in heavier workpiece quality. When using longer roller rods, the middle part of the roller rod needs to bear greater pressure, and the wear will be more serious, which may cause the roller rod to deform and affect the service life of the roller path conveyor device. Therefore, a double-roller conveyor device has been developed.

[0004] After a large number of searches, it is found that the Chinese utility model patent with the publication number CN203392317U discloses a double-roller conveyor device, which is composed of two sets of roller conveyor devices and one set of transmission device. The two sets of roller conveyor devices are arranged side by side symmetrically with respect to the center line of the frame, and one set of transmission is arranged in the middle. By using a single reduction motor, the synchronous driving of the two sets of conveyor devices and the synchronous transportation of workpieces are achieved, improving the workpiece transportation efficiency, meeting the requirements of productivity, and also reducing the possibility of the rod deforming.

[0005] However, this device has a mode in which the two rows of roller paths transport workpieces in the same direction, and it cannot change the transportation direction of the unilateral roller path according to actual needs, so it cannot meet the requirements of adapting to different production methods and has certain limitations. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a roller conveyor device for steel members to solve the problems of the single transportation mode and limited use as described above.

[0007] To solve the above technical problems, the present utility model provides the following technical solutions: A roller conveyor device for steel members, comprising a support frame. At the top of the support frame, two groups of roller conveyor components are rotatably connected. On one side of the middle of the two groups of roller conveyor components, a first reduction motor is provided. Below the first reduction motor, a first transmission component is drivingly connected. On one side of the first transmission component, a second transmission component is provided. Between the first transmission component and the second transmission component, a coupling mechanism is provided. At the bottom of the second transmission component, a displacement component for moving the second transmission component is provided. On the top of the displacement component, a lifting component is provided. On the top of the lifting component, a second reduction motor is provided. The second transmission component and the first transmission component are respectively drivingly connected to the two groups of roller conveyor components through a sprocket chain set.

[0008] As a further technical solution of the present utility model, the roller conveyor component includes a plurality of roller shafts. The plurality of roller shafts are sequentially arranged in parallel at equal intervals inside the support frame. The two ends of each roller shaft are respectively rotatably connected to the two side support frames. At one end of each roller shaft close to the middle of the support frame, two groups of driven sprockets are respectively fixedly provided.

[0009] As a further technical solution of the present utility model, the first transmission component includes a first transmission shaft. At one end of the first transmission shaft away from the second transmission component, a first support is rotatably connected. The first support is fixedly connected to the support frame. Directly below the output end of the first reduction motor on the outer side of the first transmission shaft, a first driving sprocket is fixedly connected. On the side of the first driving sprocket away from the first support, a second driving sprocket is fixedly connected. Between the second driving sprocket and one of the driven sprockets located above on one side, a chain is drivingly connected. Between the output end of the first reduction motor and the first driving sprocket, a chain is drivingly connected.

[0010] As a further technical solution of the present utility model, the second transmission component includes a second transmission shaft. At one end of the second transmission shaft away from the first transmission shaft, a second support is rotatably connected. The second support is fixedly connected to the displacement component. On the outer surface of the second transmission shaft close to the second support, a third driving sprocket is provided. Between the third driving sprocket and one of the driven sprockets located above on the side close to the third driving sprocket, a chain is drivingly connected. Between the third driving sprocket and the coupling mechanism, a fourth driving sprocket is provided. On the outer wall of one side of the fourth driving sprocket, a transmission gear is provided. The transmission gear and the output end of the second reduction motor are in the same vertical plane.

[0011] As a further technical solution of the present utility model, the coupling mechanism includes a plug-in part arranged between a first transmission shaft and a second transmission shaft. A fixing ring is fixedly arranged on the outer surface of one end of the second transmission shaft close to the first transmission shaft. Four transmission rods are equidistantly arranged on one side of the fixing ring. A fixing plate is fixedly arranged on the outer surface of one end of the first transmission shaft close to the second transmission shaft. Four counterbores for the transmission rods to pass through are formed on the fixing plate.

[0012] As a further technical solution of the present utility model, the plug-in part includes a plug and a plug hole respectively arranged at the end parts of the first transmission shaft and the second transmission shaft, and the plug is adapted to the plug hole.

[0013] As a further technical solution of the present utility model, the displacement assembly is arranged on the support frame. The displacement assembly includes a third reduction motor. A gear box is arranged at the output end of the third reduction motor. A screw rod is arranged at the output end of the gear box. One end of the screw rod far from the gear box is rotatably connected to the support frame. A slider is threadedly connected to the outer side of the screw rod. The slider is slidably connected to the support frame. A support plate is arranged at the top of the slider.

[0014] As a further technical solution of the present utility model, the lifting assembly adopts a scissor lift. The bottom plate of the scissor lift is fixedly connected to the support plate, and the top of the scissor lift is fixedly connected to the second reduction motor.

[0015] As a further technical solution of the present utility model, a stop assembly is further arranged on one side of the slider close to the third reduction motor. The stop assembly includes an installation groove arranged at the bottom of the support frame. A stop block is slidably connected inside the installation groove. A spring is arranged between the stop block and the installation groove. A connecting rod is fixedly connected to the bottom of the stop block. The other end of the connecting rod passes through the support frame and is fixedly connected to a traction block. A pushing mechanism is arranged between the traction block and the support frame.

[0016] As a further technical solution of the present utility model, the pushing mechanism includes a clamping jaw cylinder. The top of the clamping jaw cylinder is fixedly connected to the support frame. Driving blocks are respectively arranged at the output end of the clamping jaw cylinder for pushing the traction block to move downward.

[0017] A roller conveyor device for steel members provided by the present utility model has the following advantages:

[0018] 1. By arranging two rows of roller paths, the transportation efficiency is improved, and the possibility of the roller shaft deforming due to the direct use of a long roller shaft is also avoided;

[0019] 2. By setting up a coupling mechanism and a displacement mechanism, the first transmission shaft and the second transmission shaft can achieve synchronous rotation and separate independent rotation or non-rotation. Furthermore, three operating modes can be realized, namely, the two rows of roller tracks rotate synchronously in the same direction, one side of the roller tracks rotates independently, and the two rows of roller tracks rotate in different directions. The two rows of roller tracks rotating in different directions are driven by the second reduction motor to drive the transmission gear to rotate. The transmission gear drives the fourth driving sprocket to rotate. The fourth driving sprocket drives the upper roller shaft to rotate through the chain previously removed from the third driving sprocket, achieving the ability to change the conveying direction of one side of the roller tracks according to actual needs, meeting the requirements of different production methods, and breaking through the usage limitation that the original roller track conveying device can only have the two rows of roller tracks rotating in the same direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a plan view of the present invention;

[0022] Figure 2 is Figure 1 a partial enlarged view of part A in

[0023] Figure 3 is Figure 1 a partial enlarged view of part B in

[0024] Figure 4 is Figure 1 a partial enlarged view of part C in

[0025] In the figure: 1, support frame; 2, roller track conveying assembly; 21, roller shaft; 22, driven sprocket; 3, first reduction motor; 4, first transmission assembly; 41, first transmission shaft; 42, first support; 43, first driving sprocket; 44, second driving sprocket; 5, second transmission assembly; 51, second transmission shaft; 52, second support; 53, third driving sprocket; 54, fourth driving sprocket; 55, transmission gear; 6, coupling mechanism; 61, insertion part; 611, insertion head; 612, insertion hole; 62, fixing ring; 63, transmission rod; 64, fixing plate; 65, counterbore; 7, displacement assembly; 71, third reduction motor; 72, gearbox; 73, screw; 74, slider; 75, support plate; 8, lifting assembly; 9, second reduction motor; 10, stop assembly; 101, stop block; 102, spring; 103, connecting rod; 104, traction block; 105, pushing mechanism; 1051, jaw cylinder; 1052, driving block. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Please refer to the attached Figure 1 -Attached Figure 4 The utility model provides an embodiment: a roller conveyor device for steel components, including a support frame 1, the top of the support frame 1 is rotatably connected with two groups of roller conveyor assemblies 2, the second transmission assembly 5 and the first transmission assembly 4 are respectively connected to the two groups of roller conveyor assemblies 2 through a sprocket chain assembly for transmission, the roller conveyor assembly 2 includes a plurality of roller shafts 21, and the plurality of roller shafts 21 are sequentially and equidistantly arranged in parallel inside the support frame 1, and the two ends of the roller shafts 21 are respectively rotatably connected to the support frames 1 on both sides, and each roller shaft 21 is fixedly provided with two groups of driven sprocket wheels 22 at one end close to the middle of the support frame 1, a first reduction motor 3 is arranged on one side in the middle of the two groups of roller conveyor assemblies 2, and the first reduction motor 3 is connected to the first transmission assembly 4 for transmission below, and the first transmission assembly 4 includes a first transmission shaft 41, and the first transmission One end of the driving shaft 41 away from the second transmission assembly 5 is rotatably connected to the first support 42, and the first support 42 is fixedly connected to the support frame 1. A first driving sprocket 43 is fixedly connected to the outer side of the first transmission shaft 41 just below the output end of the first reduction motor 3, and a second driving sprocket 44 is fixedly connected to the side of the first driving sprocket 43 away from the first support 42. The second driving sprocket 44 is connected to the driven sprocket 22 on one side located above via a chain transmission. The output end of the first reduction motor 3 is connected to the first driving sprocket 43 via a chain transmission. The first reduction motor 3 drives the first driving sprocket 43 to rotate via the chain, and then drives the coaxial second driving sprocket 44 to rotate. The second driving sprocket 44 drives the upper driven sprocket 22 to rotate via the chain, thereby realizing the rotation of the roller shaft 21.

[0029] On one side of the first transmission assembly 4, there is a second transmission assembly 5. The second transmission assembly 5 includes a second transmission shaft 51. One end of the second transmission shaft 51 far from the first transmission shaft 41 is rotatably connected to a second support 52. The second support 52 is fixedly connected to the displacement assembly 7. On the outer surface of the second transmission shaft 51, close to one side of the second support 52, there is a third driving sprocket 53. The third driving sprocket 53 is connected to a driven sprocket 22 located above it and close to one side of the third driving sprocket 53 through a chain drive. Between the third driving sprocket 53 and the coupling mechanism 6, there is a fourth driving sprocket 54. On the outer wall of one side of the fourth driving sprocket 54, there is a transmission gear 55. The transmission gear 55 and the output end of the second reduction motor 9 are in the same vertical plane. When the first transmission shaft 41 and the second transmission shaft 51 rotate synchronously, the third driving sprocket 53 rotates to drive the driven sprocket 22 above it to rotate, realizing the rotation of another set of roller shafts 21.

[0030] A coupling mechanism 6 is arranged between the first transmission assembly 4 and the second transmission assembly 5. The coupling mechanism 6 includes a plug-in part 61 arranged between the first transmission shaft 41 and the second transmission shaft 51. The plug-in part 61 includes a plug 611 and a plug hole 612 respectively arranged at the end parts of the first transmission shaft 41 and the second transmission shaft 51. The plug 611 is adapted to the plug hole 612. On the outer surface of one end of the second transmission shaft 51 close to the first transmission shaft 41, there is a fixed ring 62 fixedly arranged. On one side of the fixed ring 62, there are four transmission rods 63 arranged at equal intervals. On the outer surface of one end of the first transmission shaft 41 close to the second transmission shaft 51, there is a fixed plate 64 fixedly arranged. On the fixed plate 64, there are four counterbored holes 65 for the transmission rods 63 to pass through. When it is necessary to make the first transmission shaft 41 and the second transmission shaft 51 in the same rotation state, the plug 611 of the first transmission shaft 41 enters the plug hole 612 of the second transmission shaft 51. At the same time, the transmission rods 63 are inserted into the counterbored holes 65. The side of the counterbored hole 65 close to the transmission rod 63 is frustum-shaped, and the transmission rod 63 can be inserted into the counterbored hole more quickly along the frustum slope.

[0031] Further, in order to prevent the coupling mechanism 6 from disengaging during rotation, a stop component 10 is also provided on one side of the slider 74 close to the third reduction motor 71. The stop component 10 includes a mounting groove provided at the bottom of the support frame 1. A stop block 101 is slidably connected inside the mounting groove. A spring 102 is provided between the stop block 101 and the mounting groove. The bottom of the stop block 101 is fixedly connected to a connecting rod 103. The other end of the connecting rod 103 passes through the support frame 1 and is fixedly connected to a traction block 104. A pushing mechanism 105 is provided between the traction block 104 and the support frame 1. The side wall of the stop block 101 contacts the slider 74 to prevent the slider 74 from moving away from the first transmission shaft 41. The elastic force of the spring 102 is used to make the stop block 101 protrude above the bottom wall of the support frame 1. When retraction is required, the pushing mechanism 105 is used to lower the traction block 104. The pushing mechanism 105 includes a jaw cylinder 1051. The top of the jaw cylinder 1051 is fixedly connected to the support frame 1. The output end of the jaw cylinder 1051 is respectively provided with a driving block 1052 for pushing the traction block 104 downward. The side wall of the pushing block 1052 contacts the inner wall of the traction block 104. When the pushing block 1052 expands outward, the traction block 104 is pushed downward, and then the stop block 101 is lowered into the mounting groove at the bottom of the support frame 1, enabling the slider 74 to move freely.

[0032] A displacement component 7 for moving the second transmission component 5 is provided at the bottom of the second transmission component 5. The displacement component 7 is arranged on the support frame 1. The displacement component 7 includes a third reduction motor 71. The output end of the third reduction motor 71 is provided with a gearbox 72. The output end of the gearbox 72 is provided with a screw rod 73. One end of the screw rod 73 away from the gearbox 72 is rotatably connected to the support frame 1. The screw rod 73 is threadedly connected with a slider 74. The slider 74 is slidably connected to the support frame 1. A support plate 75 is provided at the top of the slider 74. The screw rod 73 drives the slider 74 to move, and then drives the support plate 75 to move, finally realizing the separation and combination of the first transmission shaft 41 and the second transmission shaft 51.

[0033] A lifting component 8 is provided at the top of the displacement component 7. The lifting component 8 adopts a scissor lift. The bottom plate of the scissor lift is fixedly connected to the support plate 75. The top of the scissor lift is fixedly connected to the second reduction motor 9. A second reduction motor 9 is provided at the top of the lifting component 8. After the first transmission shaft 41 and the second transmission shaft 51 are separated, the second reduction motor 9 is lowered by the lifting component 8, so that the gear at the output end of the second reduction motor 9 meshes with the transmission gear 55. The second reduction motor 9 drives the second transmission shaft 51 to rotate, and then one set of roller conveyor components 2 is operated in a transportation direction opposite to that of the other set of roller conveyor components 2.

[0034] Specifically, when two groups of roller conveyor assemblies 2 are used to run in the same direction at the same time, the first reduction motor 3 drives the first active sprocket 43 through the chain, the first active sprocket 43 drives the second active sprocket 44 to rotate through the first transmission shaft 41, and the second active sprocket 44 drives the roller shaft 21 of the roller conveyor assembly 2 located above it to rotate through the chain. At the same time, the internal structures of the coupling mechanism 6 are plugged into each other, the first transmission shaft 41 drives the second transmission shaft 51 to rotate, the second transmission shaft 51 drives the third active sprocket 53 to rotate, and the third active sprocket 53 drives the roller shaft 21 in the roller conveyor assembly 2 located above it to rotate through the chain, so that the two groups of roller conveyor assemblies 2 can simultaneously transport workpieces in the same direction, thereby improving the conveying efficiency;

[0035] When one set of roller conveyor assemblies 2 is in operation and the other set is not in operation, the chain on the third active sprocket 53 is removed, and the second transmission shaft 51 is moved away from the first transmission shaft 41 by the displacement assembly 7, so that the plug connector 611 and the plug hole 612 of the coupling mechanism 6, as well as the transmission rod 63 and the countersunk hole 65 are separated, thereby realizing a mode in which one side of the roller conveyor assembly 2 rotates and the other side does not move;

[0036] When a mode is selected in which one group of roller conveyor assemblies 2 is operated while another group of roller conveyor assemblies 2 is operated in the opposite direction, the chain on the third driving sprocket 53 is removed, and the second transmission shaft 51 is moved a certain distance by using the displacement assembly 7, so that the fourth driving sprocket 54 is moved to the position of the original third driving sprocket 53, and the removed chain is meshed and connected with the fourth driving sprocket 54, and the second reduction motor 9 is moved downward by using the lifting assembly 8, and the gear fixedly connected to the output end of the second reduction motor 9 is meshed with the transmission gear 55, driving the transmission gear 55 to rotate, and the fourth driving sprocket 54 is driven to rotate through the transmission gear 55, thereby driving the roller conveyor 2 located above the fourth driving sprocket 54 to rotate, and the mode in which the two groups of roller conveyor assemblies 2 operate in different directions can be realized.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or equivalently replace some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A roller conveyor device for steel components, comprising a support frame (1), two groups of roller conveyor components (2) are rotatably connected to the top of the support frame (1), a first reduction motor (3) is arranged on one side of the middle of the two groups of roller conveyor components (2), and a first transmission component (4) is drivingly connected below the first reduction motor (3), and it is characterized in that: A second transmission assembly (5) is arranged on one side of the first transmission assembly (4); a coupling mechanism (6) is arranged between the first transmission assembly (4) and the second transmission assembly (5); a displacement assembly (7) for moving the second transmission assembly (5) is arranged at the bottom of the second transmission assembly (5); a lifting assembly (8) is arranged at the top of the displacement assembly (7); a second reduction motor (9) is arranged at the top of the lifting assembly (8); and the second transmission assembly (5) and the first transmission assembly (4) are respectively connected to the two groups of roller conveyor assemblies (2) through a sprocket chain group.

2. A roller conveyor device for steel members according to claim 1, characterized in that: The roller conveyor assembly (2) comprises a plurality of roller shafts (21), the plurality of roller shafts (21) being arranged in parallel and at equal intervals inside the support frame (1), the two ends of the roller shafts (21) being rotatably connected to the support frames (1) on both sides respectively, and two sets of driven sprocket wheels (22) being fixedly arranged at one end of each roller shaft (21) close to the middle of the support frame (1).

3. The roller conveyor device for steel members according to claim 2, wherein: The first transmission assembly (4) comprises a first transmission shaft (41), one end of the first transmission shaft (41) away from the second transmission assembly (5) is rotatably connected to a first support (42), the first support (42) is fixedly connected to the support frame (1), a first driving sprocket (43) is fixedly connected to the outside of the first transmission shaft (41) just below the output end of the first reduction motor (3), a side of the first driving sprocket (43) away from the first support (42) is fixedly connected to a second driving sprocket (44), the second driving sprocket (44) is connected to a driven sprocket (22) on one side located above via a chain transmission, and the output end of the first reduction motor (3) is connected to the first driving sprocket (43) via a chain transmission.

4. The roller conveyor device for steel members according to claim 3, characterized in that: The second transmission assembly (5) comprises a second transmission shaft (51), one end of the second transmission shaft (51) away from the first transmission shaft (41) is rotatably connected to a second support (52), the second support (52) is fixedly connected to the displacement assembly (7), a third driving sprocket (53) is provided on the outer surface of the second transmission shaft (51) on a side close to the second support (52), the third driving sprocket (53) and a driven sprocket (22) located above the third driving sprocket and close to the side of the third driving sprocket (53) are connected via a chain transmission, a fourth driving sprocket (54) is provided between the third driving sprocket (53) and the coupling mechanism (6), a transmission gear (55) is provided on an outer wall of one side of the fourth driving sprocket (54), and the transmission gear (55) and an output end of the second reduction motor (9) are located in the same vertical plane.

5. A roller conveyor device for steel members according to claim 4, characterized in that: The coupling mechanism (6) includes a plug-in part (61) arranged between a first transmission shaft (41) and a second transmission shaft (51). A fixing ring (62) is fixedly arranged on the outer surface of one end of the second transmission shaft (51) close to the first transmission shaft (41). Four transmission rods (63) are equidistantly arranged on one side of the fixing ring (62). A fixing plate (64) is fixedly arranged on the outer surface of one end of the first transmission shaft (41) close to the second transmission shaft (51). Four counterbores (65) for the transmission rods (63) to pass through are formed in the fixing plate (64).

6. The roller conveyor device for steel members according to claim 5, characterized in that: The plug-in part (61) includes a plug (611) and a plug hole (612) respectively arranged at the end parts of the first transmission shaft (41) and the second transmission shaft (51), and the plug (611) is adapted to the plug hole (612).

7. A roller conveyor device for steel members according to claim 5, characterized in that: The displacement assembly (7) is arranged on the support frame (1). The displacement assembly (7) includes a third reduction motor (71). A gearbox (72) is arranged at the output end of the third reduction motor (71). A screw rod (73) is arranged at the output end of the gearbox (72). One end of the screw rod (73) far from the gearbox (72) is rotationally connected to the support frame (1). A slider (74) is threadedly connected to the outer side of the screw rod (73). The slider (74) is slidably connected to the support frame (1). A support plate (75) is arranged at the top of the slider (74).

8. A roller conveyor device for steel members according to claim 7, characterized in that: The lifting assembly (8) adopts a scissor lift. The bottom plate of the scissor lift is fixedly connected to the support plate (75), and the top of the scissor lift is fixedly connected to the second reduction motor (9).

9. A roller conveyor device for steel members according to claim 7, characterized in that: A stop assembly (10) is further arranged on one side of the slider (74) close to the third reduction motor (71). The stop assembly (10) includes an installation groove arranged at the bottom of the support frame (1). A stop block (101) is slidably connected inside the installation groove. A spring (102) is arranged between the stop block (101) and the installation groove. A connecting rod (103) is fixedly connected to the bottom of the stop block (101). The other end of the connecting rod (103) passes through the support frame (1) and is fixedly connected to a traction block (104). A pushing mechanism (105) is arranged between the traction block (104) and the support frame (1).

10. A roller conveyor device for steel members according to claim 9, characterized in that: The pushing mechanism (105) includes a jaw cylinder (1051). The top of the jaw cylinder (1051) is fixedly connected to the support frame (1). Driving blocks (1052) are respectively arranged at the output end of the jaw cylinder (1051) for pushing the traction block (104) to move downward.

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