A cantilever type mobile support device

Abstract

The utility model discloses a cantilever mobile support device, including a rectangular tube, a cantilever mobile platform and a driving structure, the cantilever mobile platform has a U-shaped groove buckled on the rectangular tube, the two groove walls of the U-shaped groove are respectively provided with a first walking wheel and a second walking wheel, the groove bottom of the U-shaped groove is provided with a third walking wheel, the first walking wheel and the second walking wheel slide along the two side walls of the rectangular tube respectively, the third walking wheel slides along the top surface of the rectangular tube, the driving structure includes a driving motor, a driving sprocket, a driven sprocket and an open transmission chain, the driving motor is fixed to the motor seat, the driving sprocket is connected to the driving motor, and the driven sprocket is arranged on the rectangular tube. The utility model abandons the traditional double-beam trolley movement mode, and has a simple and convenient structure, reduces the design cost, reduces the waste of resources, and improves the economy and applicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of material support, and in particular relates to a cantilever type movable support device. Background Art

[0002] During the U-tube bending process of the heat exchanger, the length of one side of the U-tube can reach more than 20 meters. Due to the limitation of the site space and the size of the bending equipment, the U-tube cannot be effectively supported on one side during the bending process, resulting in the free end of the U-tube falling and bending, which increases the difficulty of bending. In the prior art, for workpieces with large structural dimensions and large mass, a crane or a traditional translation rolling platform is generally used for support. The traditional translation rolling platform structure mostly uses a double beam structure to build a fixed platform, and the mobile trolley device is placed on the upper part of the fixed platform for translational movement. The mobile trolley is used to support one side of the U-tube, but the mobile trolley device not only occupies a lot of space in the height direction, but also the double beam crane structure requires the workshop to provide a large space, which has high requirements for resource space and wastes space resources. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a cantilever mobile support device, which abandons the traditional double-beam trolley movement mode, and has a simple and convenient structure, reduces design costs, reduces resource waste, and improves economy and applicability.

[0004] The embodiments of the present invention are implemented by the following technical solutions:

[0005] A cantilever mobile support device comprises a rectangular tube, a cantilever mobile platform and a driving structure, the cantilever mobile platform has a U-shaped groove buckled on the rectangular tube, the two groove walls of the U-shaped groove are respectively provided with a first walking wheel and a second walking wheel, the groove bottom of the U-shaped groove is provided with a third walking wheel, the first walking wheel and the second walking wheel slide along the two side walls of the rectangular tube respectively, and the third walking wheel slides along the top surface of the rectangular tube, the driving structure comprises a driving motor, a driving sprocket, a driven sprocket and an open transmission chain, the driving motor is fixed to a motor seat, and the driving sprocket is connected to the driving motor, the driven sprocket is arranged on the rectangular tube, the open transmission chain bypasses the driving sprocket and the driven sprocket in turn, both ends of the open transmission chain are connected to the cantilever mobile platform, and a tension adjustment mechanism is provided at the connection between the open transmission chain and the cantilever mobile platform.

[0006] In one embodiment of the utility model, the cantilever mobile platform includes a workpiece bracket and an L-shaped member, the workpiece bracket is connected to the L-shaped member and forms the U-shaped groove, the first walking wheel is arranged on the workpiece bracket, the second walking wheel is arranged on the side wall of the L-shaped member, and the third walking wheel is arranged on the top of the L-shaped member.

[0007] In one embodiment of the utility model, the tension adjustment mechanism includes a connecting plate and a connecting sleeve connected to the L-shaped member, the connecting sleeve is fixed to the connecting plate, the end of the open transmission chain is provided with a chain rod passing through the connecting sleeve, and the chain rod is provided with a fastening nut.

[0008] In one embodiment of the utility model, the workpiece bracket includes a support plate, an inclined support frame and a vertical frame, the vertical frame is connected to the L-shaped member, and the first walking wheel is fixed to the vertical frame, one side of the inclined support frame is fixed to the vertical frame, and an inclined brace is provided between the inclined support frame and the vertical frame, the angle between the inclined support frame and the vertical frame is an acute angle, and the inclined support frame is arranged obliquely upward, and the support plate is fixed to the inclined support frame.

[0009] In one embodiment of the utility model, the rectangular tube is further provided with a base, and the base is provided with a chain protection slide plate for supporting the open transmission chain.

[0010] In one embodiment of the utility model, a limit mechanism is further included, which includes a first displacement sensor and a second displacement sensor arranged on the cantilever mobile platform, and the cantilever mobile platform is arranged at a mechanical limit point for triggering the first displacement sensor and the second displacement sensor.

[0011] The technical solution of the utility model has at least the following advantages and beneficial effects:

[0012] The utility model cantilever-mounted mobile platform is cantilevered on a rectangular tube, abandoning the traditional double-beam trolley movement mode, and has a simple and convenient structure. When the tube needs to be supported, the cantilever mobile platform can be moved to a required position. When not in use, the cantilever mobile platform can be moved to the origin. Compared with the double-beam trolley movement structure in the prior art, the utility model reduces design costs, reduces resource waste, and improves economy and applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the cantilever type mobile support device in the utility model;

[0015] Figure 2 It is a front view of the utility model;

[0016] Figure 3 for Figure 2Left view of

[0017] Figure 4 for Figure 1 An enlarged view of a part A;

[0018] Figure 5 It is a schematic diagram of the cantilever type mobile platform in the utility model;

[0019] Figure 6 It is a schematic diagram of the appearance of the cantilever type mobile platform in the utility model.

[0020] Icons: 1-rectangular tube, 11-base, 2-cantilever mobile platform, 21-workpiece bracket, 211-support plate, 212-inclined support frame, 213-vertical frame, 214-inclined brace, 22-L-shaped piece, 23-U-shaped groove, 24-first walking wheel, 25-second walking wheel, 26-third walking wheel, 31-driving motor, 32-driving sprocket, 33-driven sprocket, 34-open transmission chain, 341-chain pull rod, 342-fastening nut, 35-motor seat, 41-connecting plate, 42-connecting pipe sleeve, 5-chain protection slide plate. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present utility model, it should be noted that if the terms "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "configure", and "connect" 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 an indirect connection 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.

[0026] Example

[0027] Please refer to Figure 1-6 The U-shaped tube of the heat exchanger is made by a tube bending equipment. The single side of the U-shaped tube is more than 20 meters long. Due to the limitations of site space and the size of the tube bending equipment, the tube bending equipment cannot effectively support one side of the U-shaped tube during the tube bending process, causing the free end of one side of the U-shaped tube to fall and bend, increasing the difficulty of bending. If the free end of one side of the U-shaped tube falls and bends, it will interfere with other equipment in the factory and affect the normal operation of other equipment.

[0028] In this regard, the present embodiment provides a cantilevered mobile support device for supporting steel pipes during the U-shaped tube bending process of the heat exchanger, which includes a rectangular tube 1, a cantilevered mobile platform 2 and a driving structure. The rectangular tube 1 is fixed to the existing structure of the factory building through a base 11. The existing structure of the factory building refers to the basic structure in the factory building for installing the cantilevered mobile support device, such as a steel structure or a steel-concrete structure. The cantilevered mobile platform 2 is installed on the rectangular tube 1, and the cantilevered mobile platform 2 is driven by the driving structure to slide back and forth along the rectangular tube 1 in a straight line. It should be noted that the driving structure is equipped with a control device, including but not limited to a computer and a PLC. The present embodiment uses a rectangular tube 1 as a fixed platform. Relying on the good torsional section coefficient of the rectangular tube 1, the previous mode of using a box beam to build a double-beam platform trolley is abandoned.

[0029] In this embodiment, the cantilever type mobile platform 2 includes a workpiece bracket 21 and a plurality of L-shaped members 22 , and the L-shaped members 22 are connected to the workpiece bracket 21 by bolts. Each L-shaped member 22 and the workpiece bracket 21 form a U-shaped groove 23 that is buckled to the rectangular tube 1. In the U-shaped groove 23, the workpiece bracket 21 is equipped with a first walking wheel 24, the side wall of the L-shaped member 22 is equipped with a second walking wheel 25, and the third walking wheel 26 is installed on the top of the L-shaped member 22. The first walking wheel 24 and the second walking wheel 25 slide along the two side walls of the rectangular tube 1 respectively, and the third walking wheel 26 slides along the top surface of the rectangular tube 1. The cantilever mobile platform 2 is buckled on the rectangular tube 1 through the U-shaped groove 23. The workpiece bracket 21 of the cantilever mobile platform 2 is a cantilever structure. In this embodiment, the movement freedom of the cantilever mobile platform 2 is limited in the horizontal and vertical directions by three groups of walking wheels, so as to achieve the purpose of stable movement and reasonable force. In addition, the cantilever beam structure is improved to improve the situation where the moment vector caused by the long force arm is large, and it is also ensured that the cantilever mobile platform 2 can only move in a straight line along the rectangular tube 1. This embodiment adopts the method of rolling the running wheel along the surface of the rectangular tube 1, which can effectively reduce the problem of increased force and severe wear of contact parts, thereby damaging the structural equipment when the running wheel is slightly offset during the linear motion.

[0030] Specifically, the workpiece bracket 21 includes a support plate 211, an inclined support frame 212 and a vertical frame 213. The inclined support frame 212 and the vertical frame 213 are both made of channel steel and / or rectangular tube 1 welded together. The vertical frame 213 is connected to the L-shaped member 22, and the first walking wheel 24 is fixed on the vertical frame 213. One side of the inclined support frame 212 is fixed on the vertical frame 213. The angle between the inclined support frame 212 and the vertical frame 213 is an acute angle, and the inclined support frame 212 is arranged obliquely upward. The support plate 211 is fixed on the inclined support frame 212. A diagonal brace 214 is also provided between the inclined support frame 212 and the vertical frame 213. The diagonal brace 214 also adopts channel steel. The diagonal brace 214 supports the inclined support frame 212 to enhance the strength and stability of the workpiece bracket 21. Before the U-shaped tube is bent, the cantilever mobile platform 2 is moved to a predetermined position. During the U-shaped tube bending process, the steel tube gradually contacts the support plate 211. It should be noted that the steel tube is not entirely placed on the support plate 211. A portion of the free end of the steel tube is also suspended in the air and may fall. However, the present application utilizes an upwardly inclined support plate 211 to support the steel tube. Even if the free end of the steel tube falls, it will not affect the operation of the equipment below the support plate 211.

[0031] In this embodiment, the driving structure includes a driving motor 31, a driving sprocket 32, a driven sprocket 33 and an open transmission chain 34. The driving motor 31 adopts a reduction motor and is fixed on a motor base 35. The motor base 35 is fixed to the existing fixed structure of the factory workshop by bolts, and the driving sprocket 32 ​​is connected to the driving motor 31. The driven sprocket 33 is installed on the rectangular tube 1. The open transmission chain 34 is a linear transmission chain rather than a closed-loop transmission chain. A commercially available finished product is adopted. The open transmission chain 34 bypasses the driving sprocket 32 ​​and the driven sprocket 33 in turn. Both ends of the open transmission chain 34 are connected to the cantilever mobile platform 2, and a tension adjustment mechanism for adjusting the tightness of the open transmission chain 34 is provided at the connection between the open transmission chain 34 and the cantilever mobile platform 2. Specifically, the tension adjustment mechanism includes a connecting plate 41 and a connecting sleeve 42 connected to the L-shaped member 22, the connecting sleeve 42 is fixed to the connecting plate 41, and at the same time, both ends of the open transmission chain 34 are provided with chain rods 341 with external threads, the chain rods 341 pass through the connecting sleeve 42 and are connected, and the chain rods 341 are provided with fastening nuts 342. During installation, two L-shaped members 22 are selected and the connecting plates 41 are installed respectively, and then the open transmission chain 34 is passed around the driving sprocket 32 ​​and the driven sprocket 33, and then the chain rods 341 are respectively passed through the corresponding connecting sleeves 42, and finally the fastening nuts 342 on the chain rods 341 are tightened to fix the chain rods 341. This embodiment adopts an open transmission chain 34 and a connecting rod structure, which reduces the tensioner structure required for the closed-loop transmission chain, reduces the size of the fixed platform rectangular tube 1, saves workshop and factory space, saves resources, and can change the connection position of the connecting rod to change the movement range of the cantilever mobile platform 2.

[0032] It should be noted that two pairs of fastening nuts 342 are installed on the chain pull rod 341, and the two pairs of fastening nuts 342 are distributed on both sides of the connecting pipe sleeve 42. When fixing the chain pull rod 341, the two pairs of fastening nuts 342 are used to clamp the top. Each pair of fastening nuts 342 is 2, and double nuts are used to prevent loosening.

[0033] In this embodiment, the base 11 is provided with a chain protection slide plate 5 for supporting the open transmission chain 34 to prevent the transmission chain from rubbing against the base 11 .

[0034] In the present embodiment, the cantilever mobile support device of the present embodiment is also provided with a limiting mechanism, which includes a first displacement sensor and a second displacement sensor (not shown in the figure). The cantilever mobile platform 2 is driven by the driving structure to move precisely. When the first displacement sensor detects the cantilever mobile platform 2, the control device controls the reduction motor to make the mobile platform move slowly until the second displacement sensor detects the mechanical limit point of the cantilever mobile platform 2, and the control device controls the reduction motor to stop precisely.

[0035] The utility model cantilever-mounted mobile platform 2 is cantileveredly mounted on the rectangular tube 1, abandoning the traditional double-beam trolley movement mode, and has a simple and convenient structure. When the pipe needs to be supported, the cantilever mobile platform 2 can be moved to the required position. When not in use, the cantilever mobile platform 2 can be moved to the origin. Compared with the double-beam trolley movement structure in the prior art, the utility model reduces design costs, reduces resource waste, and improves economy and applicability.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cantilever type mobile support device, characterized in that: The invention comprises a rectangular tube, a cantilever mobile platform and a driving structure. The cantilever mobile platform has a U-shaped groove buckled on the rectangular tube. The two groove walls of the U-shaped groove are respectively provided with a first running wheel and a second running wheel. The groove bottom of the U-shaped groove is provided with a third running wheel. The first running wheel and the second running wheel slide along the two side walls of the rectangular tube respectively. The third running wheel slides along the top surface of the rectangular tube. The driving structure includes a driving motor, a driving sprocket, a driven sprocket and an open transmission chain. The driving motor is fixed to a motor seat, and the driving sprocket is connected to the driving motor. The driven sprocket is arranged on the rectangular tube. The open transmission chain passes around the driving sprocket and the driven sprocket in sequence. Both ends of the open transmission chain are connected to the cantilever mobile platform, and a tension adjustment mechanism is provided at the connection between the open transmission chain and the cantilever mobile platform.

2. The cantilever type movable support device according to claim 1, characterized in that: The cantilever mobile platform includes a workpiece bracket and an L-shaped member, the workpiece bracket is connected to the L-shaped member and forms the U-shaped groove, the first walking wheel is arranged on the workpiece bracket, the second walking wheel is arranged on the side wall of the L-shaped member, and the third walking wheel is arranged on the top of the L-shaped member.

3. The cantilever type movable support device according to claim 2, characterized in that: The tension adjustment mechanism includes a connecting plate and a connecting sleeve connected to the L-shaped member, the connecting sleeve is fixed to the connecting plate, the end of the open transmission chain is provided with a chain pull rod passing through the connecting sleeve, and the chain pull rod is provided with a fastening nut.

4. The cantilever type movable support device according to claim 2, characterized in that: The workpiece bracket includes a support plate, an inclined support frame and a vertical frame, the vertical frame is connected to the L-shaped member, and the first walking wheel is fixed to the vertical frame. One side of the oblique support frame is fixed to the vertical frame, and an oblique brace is provided between the oblique support frame and the vertical frame. The angle between the oblique support frame and the vertical frame is an acute angle, and the oblique support frame is arranged obliquely upward, and the support plate is fixed to the oblique support frame.

5. The cantilever type movable support device according to claim 1, characterized in that: The rectangular tube is also provided with a base, and the base is provided with a chain protection slide plate for supporting the open transmission chain.

6. The cantilever type movable support device according to claim 1, characterized in that: It also includes a limiting mechanism, which includes a first displacement sensor and a second displacement sensor arranged on the cantilevered mobile platform, and the cantilevered mobile platform is arranged at a mechanical limiting point for triggering the first displacement sensor and the second displacement sensor.

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