Lifting type roller bracket

Abstract

The utility model discloses a lifting type roller bracket, which relates to the field of roller bracket structures and comprises a base, and a lifting mechanism is arranged at the bottom of the base. A sliding groove is formed in the base, the sliding groove has a sliding stroke in the horizontal direction, two sliding seats are connected into the sliding groove in a sliding mode, the two sliding seats are both connected with a translation driving mechanism, and the translation driving mechanism is installed on the base so that the distance between the two sliding seats can be driven and adjusted through the translation driving mechanism; the sliding seat is connected with a wheel seat with a rolling wheel in a sliding mode, the sliding direction of the wheel seat is in the vertical direction, and an elastic piece is arranged between the wheel seat and the sliding seat. According to the roller bracket, the height of the roller bracket can be adjusted, and a spring is adopted for supporting, so that the roller bracket adapts to barrels with different diameters, meanwhile, the change of supporting force, supported by the roller bracket, of the free end caused by eccentric movement of the barrels can be counteracted, and movement and displacement of the barrels are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of roller bracket structures, in particular to a lifting roller bracket. Background Art

[0002] When performing surface operations on pipes, cylinders, and cylinders with large mass (such as tons), such as welding, non-destructive testing, coating / anti-corrosion treatment of the outer and inner surfaces, cutting, etc., a roller bracket is required. That is, one end of the pipe, cylinder or cylinder (collectively referred to as the cylinder for convenience of description below) is installed as a fixed end on a rotary positioner, and the other end is a free end supported by a roller bracket. The rotary positioner drives the cylinder to rotate around its own axis to achieve the surface operation of the cylinder.

[0003] The height of the existing roller bracket is fixed. When used in conjunction with a rotary positioner, since the height at which the rotary positioner installs the cylinder is determined by the rotary positioner, usually the axis of the cylinder is installed collinear with the axis of the rotating component in the rotary positioner. Therefore, after the cylinder is installed, the axis height remains unchanged. Thus, for the existing roller bracket, it can only adapt to cylinders of one diameter and cannot adapt to cylinders of different diameters. For cylinders of different diameters, the current method is to increase or decrease the pads at the bottom of the roller bracket to adjust the height of the rollers. For large cylinders, the mass of the roller bracket is also relatively large, so adjusting the pads is relatively complicated. In addition, due to reasons such as the cylinder not being straight or the concentricity between the cylinder and the rotating component in the rotary positioner not being high after installation, when the rotary positioner drives the cylinder to rotate, the cylinder is prone to eccentric movement. And because the height of the roller bracket is fixed, there is a moment when the roller bracket does not support the free end of the cylinder, which is likely to cause the free end to move and the cylinder to shift, seriously affecting the surface treatment quality of the cylinder.

[0004] Therefore, it is necessary to develop a new technical solution. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a lifting roller bracket to solve the above problems. The height of the roller bracket can be adjusted, and spring support is adopted, so as to adapt to cylinders of different diameters, and at the same time, it can offset the change in the support force of the free end of the cylinder caused by the eccentric movement of the cylinder, effectively reducing the movement and displacement of the cylinder.

[0006] The technical solution adopted by the present utility model is as follows: A lifting roller bracket, comprising a base, the bottom of the base being provided with a lifting mechanism; a chute is formed on the base, the chute having a sliding stroke in the horizontal direction, and two sliding seats are slidably connected in the chute, both sliding seats being connected to a translation driving mechanism, the translation driving mechanism being installed on the base so as to drive and adjust the distance between the two sliding seats through the translation driving mechanism; a wheel seat with rollers is slidably connected to the sliding seat, the sliding direction of the wheel seat being along the vertical direction, and an elastic member is provided between the wheel seat and the sliding seat.

[0007] Further, the lifting mechanism includes a plurality of vertically arranged sleeves, and a support rod is slidably connected in the vertical direction in each sleeve, the tops of all the support rods being connected to the base; the support rod is connected to a lifting driving mechanism.

[0008] Further, all the support rods are connected to the same lifting driving mechanism.

[0009] Further, the lifting driving mechanism includes a lifting motor, the output end of the lifting motor being mechanically connected to a worm, both ends of the worm being engaged with a worm gear, a third gear being coaxially arranged on the worm gear, a strip tooth being provided on the support rod, and a notch being formed on the sleeve for the third gear to extend into and engage with the strip tooth.

[0010] Further, the distances from the two positions where the worm engages with the worm gear to the position where the worm is connected to the lifting motor on the worm are equal.

[0011] Further, the translation driving mechanism includes a translation motor and a lead screw mechanically connected to the output end of the translation motor, the lead screw being rotatably connected to the base, and the sliding seat being threadedly connected to the lead screw.

[0012] Further, there are two threads on the lead screw, the two threads being threadedly connected to the two sliding seats respectively, and the helix directions of the two threads being opposite.

[0013] Further, the bottom of the wheel seat has a vertically arranged guiding rod, the guiding rod being slidably connected to the sliding seat, and the elastic member being sleeved on the guiding rod.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:

[0015] 1. By providing a lifting mechanism, the present utility model can be lifted and installed on the base, thereby adjusting the height of the roller in space to adapt to cylinders of different diameters.

[0016] 2. The utility model realizes changing the distance between two rollers by setting a chute and a sliding seat, as well as a translation driving mechanism for driving the sliding seat to slide in the chute, so as to adapt to cylinders with different diameters; and cooperating with a lifting mechanism to adjust the height of the rollers in space can effectively ensure stability.

[0017] 3. By setting an elastic member, when the cylinder generates eccentric motion, the deformation of the elastic member can offset the change in the supporting force of the free end supported by the roller bracket caused by the eccentric motion of the cylinder, ensuring that the rollers always support the free end of the cylinder and effectively reducing the crosstalk and displacement of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model will be described by way of examples with reference to the accompanying drawings, where:

[0019] Figure 1 is a schematic structural diagram of the utility model;

[0020] Reference numerals in the figure: 1 - base; 2 - lead screw; 3 - notch; 4 - sliding seat; 5 - lifting motor; 6 - elastic member; 7 - chute; 8 - first gear; 9 - second gear; 10 - worm; 11 - worm gear; 12 - third gear; 13 - strip teeth; 14 - support rod; 15 - wheel seat; 16 - roller; 17 - translation motor; 18 - sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In the description of this specification, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this specification is usually placed during use. It is only for the convenience of describing this specification and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be understood as a limitation to this specification.

[0022] In addition, terms such as "horizontal" and "vertical" in the description of this specification do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0023] In the description of this specification, it should also be noted that unless otherwise clearly specified and defined, if terms such as "set", "install", "connected", and "connected" appear, they should be understood in a broad sense. For example, the connection 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components.

[0024] Embodiment 1

[0025] As Figure 1 shown, a lifting roller bracket includes a base 1, and a lifting mechanism is provided at the bottom of the base 1; a chute 7 is provided on the base 1, the chute 7 has a sliding stroke in the horizontal direction, and two sliding seats 4 are slidably connected in the chute 7. Both sliding seats 4 are connected with a translation driving mechanism, and the translation driving mechanism is installed on the base 1 so as to drive and adjust the distance between the two sliding seats 4 through the translation driving mechanism; a wheel seat 15 with rollers 16 is slidably connected to the sliding seat 4, the sliding direction of the wheel seat 15 is along the vertical direction, and an elastic member 6 is provided between the wheel seat 15 and the sliding seat 4.

[0026] In this embodiment, when the roller bracket is unloaded, that is, before the roller bracket is used, by setting the lifting mechanism, the base 1 can be lifted and installed, so as to adjust the height of the roller 16 in space to be able to adapt to cylinders with different diameters; by setting the chute 7 and the sliding seat 4, and the translation driving mechanism for driving the sliding seat 4 to slide in the chute 7, by changing the distance between the two sliding seats 4, the distance between the two rollers 16 can be actually changed to be able to adapt to cylinders with different diameters; and in cooperation with the lifting mechanism to adjust the height of the roller 16 in space, the stability can be effectively guaranteed; by setting the elastic member 6, when the cylinder generates an eccentric movement, the deformation of the elastic member 6 can offset the change in the supporting force of the free end supported by the roller bracket caused by the eccentric movement of the cylinder, ensuring that the roller 16 always supports the free end of the cylinder and effectively reducing the crosstalk and displacement of the cylinder.

[0027] Embodiment 2

[0028] On the basis of Embodiment 1, a further feasible specific implementation manner is proposed.

[0029] A feasible implementation manner is that the lifting mechanism includes a plurality of vertically arranged sleeves 18, and a support rod 14 is slidably connected in the vertical direction in each sleeve 18. The tops of all support rods 14 are connected to the base 1; the support rod 14 is connected with a lifting driving mechanism, and by driving the support rod 14 to slide in the sleeve 18 through the lifting driving mechanism, the height of the base 1 in space is changed, and further the purpose of adjusting the height of the roller 16 is achieved.

[0030] It should be noted that, after measuring commonly used cylinders, the height adjustment range is within 200mm, which can adapt to most cylinders of different specifications.

[0031] In a feasible implementation mode, all the support rods 14 are connected to the same lifting drive mechanism, so that the movement power of all the support rods 14 comes from the same lifting drive mechanism, thereby improving the synchronization of the lifting movement of all the support rods 14 and avoiding the occurrence of tilting.

[0032] A feasible implementation manner, the lifting drive mechanism includes a lifting motor 5, the output end of the lifting motor 5 is mechanically connected to a worm 10, both ends of the worm 10 are meshed with a worm wheel 11, a third gear 12 is coaxially arranged on the worm wheel 11, the support rod 14 is provided with a bar tooth 13, and a sleeve 18 is provided with a notch 3 for the third gear 12 to extend into and mesh with the bar tooth 13; wherein, the output end of the lifting motor 5 can be coaxially arranged with a first gear 8, and the position on the worm 10 that receives the power from the lifting motor 5 can be coaxially arranged with a second gear 9, and the first gear 8 and the second gear 9 can be meshed to Realize the mechanical transmission connection between the lifting motor 5 and the worm 10; similarly, a reducer can be added to realize the lifting motor 5 to output a large torque to the worm 10, that is, the first gear 8 is meshed with the input end of the reducer, and the output end of the reducer is meshed with the second gear 9; after obtaining power, the worm 10 rotates around its own axis, and the rotation of the worm 10 drives the worm wheel 11 to rotate, and the rotation of the worm wheel 11 synchronously drives the third gear 12 to rotate, and the third gear 12 is meshed with the rack to realize the movement of the support rod 14; further, by controlling the lifting motor 5 to rotate forward or reverse, it is possible to control the support rod 14 to make an upward or downward movement.

[0033] It should be noted that the existence of the notch 3 provides an environment for the third gear 12 to mesh with the bar teeth 13 .

[0034] It should be noted that the worm wheel 11-worm 10 structure is adopted in this embodiment. Its purpose is to utilize the self-locking property of the structure itself, that is, the worm wheel 11 can only be driven by the worm 10, but the worm 10 cannot be driven by the worm wheel 11, thereby effectively ensuring the stability of the spatial position of the support rod 14.

[0035] A feasible implementation method, for this embodiment, there are four support rods 14, which respectively support the four angular positions of the base 1; there are two worms 10, and each worm 10 has a worm wheel 11 at both ends, and one worm wheel 11 matches one support rod 14; the distances between the two positions on the worm 10 that are meshed with the worm wheel 11 and the position on the worm 10 that is connected to the lifting motor 5 are equal. When the lifting motor 5 drives the worm 10 to rotate, the distances between the force acting on the worm 10 and the load position are equal, ensuring that the length of the force arm is equal, further improving the uniformity of the force on the worm 10 during rotation.

[0036] A feasible implementation manner is that the translation driving mechanism includes a translation motor 17 and a lead screw 2 mechanically connected to the output end of the translation motor 17. The lead screw 2 is rotatably connected to the base 1. The slide seat 4 is threadedly connected to the lead screw 2. The mechanical connection between the translation motor 17 and the lead screw 2 is the same as the mechanical connection between the lifting motor 5 and the worm 10, and will not be described in detail hereinafter. When the translation motor 17 drives the lead screw 2 to rotate, the lead screw 2 and the slide seat 4 form a ball screw pair, that is, when the lead screw 2 rotates, it drives the slide seat 4 to slide along the chute 7, thereby changing the distance between the two slide seats 4.

[0037] It should be noted that for the rotating components mentioned in this specification, such as the rotating shafts of the lead screw 2, the worm 10, and the worm gear 11, there are bearings and bearing seats for support to ensure reliable rotation and the stable position of the rotating components. The specific connection method is well known to those skilled in the art and will not be described in detail in this specification.

[0038] A feasible implementation manner is that there are two threads on the lead screw 2, and the two threads are respectively threadedly connected to the two slide seats 4, and the helix directions of the two threads are opposite to each other to realize the mutual approach or separation of the two slide seats 4.

[0039] A feasible implementation manner is that the bottom of the wheel seat 15 has a vertically arranged guide rod, and the guide rod is slidably connected to the slide seat 4. The elastic member 6 is sleeved on the guide rod. The movement direction of the wheel seat 15 is restricted by the guide rod, and at the same time, the elastic member 6 is shown to prevent the elastic member 6 from bending and deforming.

[0040] The present utility model is not limited to the foregoing specific implementation manners. The present utility model extends to any new feature or any new combination disclosed in this specification, as well as any new method or process step or any new combination disclosed.

Claims

1. A lifting roller bracket, characterized in that: The invention comprises a base (1), wherein the bottom of the base (1) is provided with a lifting mechanism; a slide groove (7) is provided on the base (1), the slide groove (7) has a sliding stroke in the horizontal direction, two slide seats (4) are slidably connected in the slide groove (7), the two slide seats (4) are both connected with a translation driving mechanism, and the translation driving mechanism is installed on the base (1) so that the spacing between the two slide seats (4) can be adjusted by driving the translation driving mechanism; a wheel seat (15) having a roller (16) is slidably connected to the slide seat (4), the sliding direction of the wheel seat (15) is along the vertical direction, and an elastic member (6) is provided between the wheel seat (15) and the slide seat (4).

2. The lift roller bracket according to claim 1, characterized in that: The lifting mechanism comprises a plurality of vertically arranged sleeves (18), each sleeve (18) having a support rod (14) slidably connected in a vertical direction, and the tops of all the support rods (14) are connected to the base (1); the support rods (14) are connected to a lifting drive mechanism.

3. The lifting roller bracket according to claim 2, characterized in that: All support rods (14) are connected to the same lifting drive mechanism.

4. The lifting roller bracket according to claim 3, characterized in that: The lifting drive mechanism comprises a lifting motor (5), the output end of the lifting motor (5) is mechanically connected to a worm (10), both ends of the worm (10) are meshed with a worm wheel (11), a third gear (12) is coaxially arranged on the worm wheel (11), the support rod (14) is provided with a bar tooth (13), and the sleeve (18) is provided with a notch (3) for the third gear (12) to extend into and mesh with the bar tooth (13).

5. The lifting roller bracket according to claim 4, wherein: The distances between the two positions on the worm (10) that mesh with the worm wheel (11) and the position on the worm (10) that is connected to the lifting motor (5) are equal.

6. The lifting roller bracket according to claim 1, wherein: The translation drive mechanism comprises a translation motor (17) and a screw rod (2) mechanically connected to an output end of the translation motor (17); the screw rod (2) is rotationally connected to the base (1); and the slide seat (4) is threadedly connected to the screw rod (2).

7. The lifting roller bracket according to claim 6, wherein: The screw rod (2) has two sections of threads, the two sections of threads are respectively threadedly connected to the two slide seats (4), and the rotation directions of the two sections of threads are opposite.

8. The lifting roller bracket according to claim 1, wherein: The bottom of the wheel seat (15) has a vertically arranged guide rod, the guide rod is slidably connected to the slide seat (4), and the elastic member (6) is sleeved on the guide rod.

Images