Guardrail lifting device

Abstract

The utility model relates to a guardrail lifting device which comprises a machine frame, a power output device, a power steering device, a lifting device and a clamping device, the power output device, the power steering device, the lifting device and the clamping device are arranged on the machine frame, and the machine frame comprises two supports arranged oppositely and a top plate fixedly arranged at the upper ends of the two supports. The power output device is mounted on the top plate and is suitable for outputting power to the power steering device; the two sets of power steering devices are connected and mounted on the two sides of the power output device correspondingly and are suitable for converting transverse power into longitudinal power; the two sets of lifting devices are arranged on the two supports in the longitudinal direction, the upper ends of the lifting devices are connected with the power steering device, and the lifting devices are suitable for driving the clamping devices to move up and down; and the two sets of clamping devices are installed on the lifting device correspondingly and suitable for clamping the guardrails on the two sides. According to the scheme, the height of the guardrail can be automatically adjusted, labor cost is reduced, assembly line production efficiency is improved, and personal safety of staff is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporator processing equipment, in particular to a guardrail lifting device. Background Art

[0002] In the assembly line of the welding team in the two-device workshop of the air-conditioning factory, guardrails (railings) are needed to position the evaporator on the assembly line (the evaporator is leaning against the guardrails) to assist welding workers in welding operations. Since there are many evaporator models and the length and width vary depending on the model, the welding line needs to change models 15 to 25 times a day. Correspondingly, the height of the guardrail needs to be adjusted during the change to prevent the evaporator from tipping over. The existing guardrail is adjusted up and down manually, and the time spent on adjusting the guardrail is nearly 1 hour a day. At the same time, the manual change operation is complicated, and there is a risk of employees accidentally falling when adjusting the higher guardrail. Summary of the Invention

[0003] In order to solve the above problems, the purpose of the present invention is to provide a guardrail lifting device that can automatically complete the lifting and lowering of the guardrail with high adjustment accuracy. Only one person is needed to complete the work of adjusting the guardrail, thereby reducing labor costs and improving assembly line production efficiency.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A guardrail lifting device is characterized by comprising a frame, a power output device, a power steering device, a lifting device and a clamping device arranged on the frame, wherein:

[0006] The frame comprises two pairs of brackets arranged opposite to each other and a top plate fixedly arranged on the upper ends of the two brackets;

[0007] A power output device, mounted on the top plate, adapted to output power to the power steering device;

[0008] The power steering device is provided with two sets and is respectively connected and installed on both sides of the power output device, suitable for converting lateral power into longitudinal power;

[0009] The lifting device is provided with two groups and is respectively arranged on the two brackets along the longitudinal direction. The upper end of the lifting device is connected to the power steering device and is suitable for driving the clamping device to move up and down;

[0010] The clamping device is provided with two sets and is respectively installed on the lifting device, suitable for clamping the guardrails on both sides;

[0011] The power output device can output power to the power steering devices on both sides, and the power steering devices on both sides respectively drive the lifting devices on both sides to operate and drive the clamping devices and guardrails on both sides to move up and down synchronously.

[0012] Preferably, the power output device includes a servo motor and a worm gear reducer, the output shaft of the servo motor is connected to the input shaft of the worm gear reducer, and the worm gear reducer is fixed to the upper end of the top plate through a mounting plate.

[0013] Preferably, the power steering device is a gear steering box, two sets of gear steering boxes are fixed to the upper end of the top plate and distributed on both sides of the worm gear reducer, the two ends of the output shaft of the worm gear reducer are respectively connected to the input shafts of the two sets of gear steering boxes, and the output shaft of the gear steering box extends downward into the bracket and is connected to the lifting device.

[0014] Preferably, the output shaft of the worm gear reducer is connected to the input shaft of the gear steering box via a first coupling.

[0015] Preferably, assembly grooves are provided on opposite sides of the two brackets, and the lifting device is a screw transmission pair longitudinally installed in the assembly groove, including a ball screw and a screw nut seat sleeved on the ball screw, and screw supports are fixed on the upper and lower sides of the assembly groove, and the upper and lower ends of the ball screw can be rotatably passed through the screw supports, and the output shaft of the gear steering box extends downward into the assembly groove and is connected to the upper end of the ball screw. The output shaft of the gear steering box can drive the ball screw to rotate and drive the screw nut seat to move up and down in the assembly groove.

[0016] Preferably, the output shaft of the gear steering box and the upper end of the ball screw are connected via a second coupling.

[0017] Preferably, the clamping device includes a fixing plate fixed on the side end of the screw nut seat, mounting holes are opened on both sides of the fixing plate, a clamping rod is passed through the mounting hole, and the inner end of the clamping rod is provided with an arc-shaped frame plate adapted to the guardrail between the two brackets, and the guardrail passes through and is fixed on the arc-shaped frame plate.

[0018] Preferably, a fixing tube is fixedly provided on the end of the fixing plate facing away from the arc-shaped frame plate outside the corresponding mounting hole, and the clamping rod is adapted to pass through the fixing tube and then extend out of the mounting hole.

[0019] Preferably, the clamping device also includes an L-shaped plate, which is fixed between the screw nut seat and the fixed plate, a first slide rod is longitudinally fixed in the assembly groove, and a first slider that cooperates with the first slide rod is fixed at the inner end of the L-shaped plate.

[0020] Preferably, a second slide bar is longitudinally fixed on the side wall of the bracket adjacent to the assembly groove, a section of the L-shaped plate is bent on the outside of the side wall, and a second slider that cooperates with the second slide bar is provided at the inner end.

[0021] The utility model adopts the above-mentioned technical solution, and a guardrail lifting device is arranged on the assembly line. The guardrail lifting device includes a power output device, a power steering device, a lifting device and a clamping device, wherein the power output device includes a servo motor and a worm gear reducer; the power steering device is a gear steering box; the lifting device is a ball screw transmission pair; the guardrail is installed on the clamping device; when the guardrail height needs to be adjusted, the servo motor is remotely controlled to output power to the worm gear reducer, and then to the gear steering boxes on both sides to the ball screws on both sides. The rotation of the ball screw drives the screw nut seat to move up and down, and then drives the clamping device and guardrail installed on the screw nut seat to move up and down to adjust the height of the guardrail, ensuring that the guardrails on both sides rise and fall synchronously.

[0022] The above technical solution has the following beneficial effects:

[0023] (1) Reduce labor costs, only one person is needed to complete the guardrail adjustment work;

[0024] (2) Save approximately 637 man-hours per year and improve production line efficiency;

[0025] (3) Multiple guardrail lifting devices can be linked and operated synchronously, and the entire line of guardrails can be put into place with one click, which is very convenient;

[0026] (4) Remote control mode is more flexible;

[0027] (5) Ensure the personal safety of employees. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The figure is a schematic diagram of the three-dimensional structure of a guardrail lifting device.

[0029] Figure 2 This is a schematic diagram of the three-dimensional structure of a guardrail lifting device from another perspective.

[0030] Figure 3 It is a schematic diagram of the assembly between the bracket, lifting device and clamping device.

[0031] Figure 4 It is a schematic diagram of the assembly between the L-shaped plate, the bracket and the lifting device.

[0032] Figure 5 This is a schematic diagram of the three-dimensional structure of the gear steering box.

[0033] Figure 6 This is a schematic diagram of the coordination between multiple guardrail lifting devices and guardrails. DETAILED DESCRIPTION

[0034] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more, unless expressly limited otherwise.

[0037] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature. Example 1:

[0039] like Figures 1 to 5 The guardrail lifting device shown includes a frame, a power output device, a power steering device, a lifting device and a clamping device arranged on the frame, wherein:

[0040] The frame comprises two pairs of brackets 1 arranged opposite to each other and a top plate 2 fixedly arranged on the upper ends of the two brackets 1;

[0041] A power output device, mounted on the top plate 2, adapted to output power to the power steering device;

[0042] The power steering device is provided with two sets and is respectively connected and installed on both sides of the power output device, suitable for converting lateral power into longitudinal power;

[0043] The lifting device is provided with two groups and is respectively arranged on the two brackets 1 along the longitudinal direction. The upper end of the lifting device is connected to the power steering device and is suitable for driving the clamping device to move up and down;

[0044] The clamping device is provided with two sets and is respectively installed on the lifting device, suitable for clamping the guardrails on both sides;

[0045] The power output device can output power to the power steering devices on both sides, and the power steering devices on both sides respectively drive the lifting devices on both sides to operate and drive the clamping devices and guardrails on both sides to move up and down synchronously.

[0046] In the above technical solution, the guardrail lifting device includes a power output device, a power steering device, a lifting device and a clamping device, wherein the power output device outputs power for the entire device, and the power steering device is used to convert lateral power into longitudinal power and output it to the lifting device, and the power steering devices on both sides receive the same power source and have high synchronization, and can drive the lifting devices to operate at the same time. After the lifting devices are started synchronously, they drive the clamping devices on both sides to move up and down, and then drive the guardrails on both sides to move up and down, thereby achieving the purpose of automatically adjusting the guardrail height, reducing labor costs, improving assembly line production efficiency, and ensuring the personal safety of employees.

[0047] Furthermore, the power output device includes a servo motor 3 and a worm gear reducer 4. The output shaft of the servo motor 3 is connected to the input shaft of the worm gear reducer 4, and the worm gear reducer 4 is fixed to the upper end of the top plate 2 via a mounting plate 5. In this technical solution, the coordination between the servo motor and the worm gear reducer makes the raising and lowering speed of the guardrail adjustable and the movement precision high, ensuring that the change speed requirements under different on-site conditions are met.

[0048] Furthermore, the power steering device comprises a gearbox 6. Two sets of gearboxes 6 are fixed to the upper end of the top plate 2 and are located on either side of the worm gear reducer 4. The output shafts of the worm gear reducer 4 are connected at both ends to the input shafts of the two sets of gearboxes 6. The output shafts of the gearboxes 6 extend downward into the bracket 1 and connect to the lifting mechanism. This technical solution ensures smooth operation of the gearboxes, capable of reliably converting the lateral power output of the power output device into longitudinal power applied to the lifting mechanism, ensuring the synchronous and efficient operation of the lifting mechanisms on both sides.

[0049] Furthermore, the output shaft of the worm gear reducer 4 is connected to the input shaft of the gear steering box 6 via a first coupling 7. In this technical solution, the first coupling effectively connects the output shaft of the worm gear reducer 4 to the input shaft of the gear steering box 6, preventing shaft deviation, mitigating impact, and absorbing vibration.

[0050] Furthermore, assembly grooves 8 are provided on opposite sides of the two brackets 1. The lifting device is a screw transmission pair longitudinally installed in the assembly groove 8, including a ball screw 9 and a screw nut seat 10 sleeved on the ball screw 9. Screw supports 11 are fixedly provided on the upper and lower sides of the assembly groove 8. The upper and lower ends of the ball screw 9 can be rotatably passed through the screw supports 11. The output shaft of the gear steering box 6 extends downward into the assembly groove 8 and is connected to the upper end of the ball screw 9. The output shaft of the gear steering box 6 can drive the ball screw 9 to rotate and drive the screw nut seat 10 to move up and down in the assembly groove 8. In this technical solution, the ball screw pair is used as the lifting device in this case, which has high transmission efficiency and high precision, and can ensure the accuracy of the up and down adjustment of the guardrail.

[0051] Furthermore, the output shaft of the gear steering box 6 is connected to the upper end of the ball screw 9 via a second coupling 12. In this technical solution, the first coupling effectively connects the output shaft of the gear steering box 6 to the upper end of the ball screw 9, preventing shaft deviation, mitigating impact, and absorbing vibration.

[0052] Furthermore, the clamping device includes a fixing plate 13 fixed to the side end of the screw nut seat 10. Mounting holes are formed on both sides of the fixing plate 13, through which a clamping rod 14 is inserted. The inner end of the clamping rod 14 is provided between the two brackets 1 and is provided with a curved frame plate 15 adapted to the guardrail. The guardrail passes through and is fixed to the curved frame plate 15. In this technical solution, the clamping device is provided with two curved clamping plates that are assembled with the guardrail, which can improve the stability of the guardrail assembly. To effectively position the guardrail, the guardrail and the curved frame plate can be fixed or clamped together, or other effective positioning methods can be used.

[0053] Furthermore, a fixing tube 16 is fixed to the end of the fixing plate 13 facing away from the curved frame plate 15, corresponding to the mounting hole. The clamping rod 14 fits through the fixing tube 16 and then extends out of the mounting hole. In this technical solution, the provision of the fixing tube can effectively prevent the clamping rod from shaking, thereby improving the movement stability of the guardrail.

[0054] Furthermore, the clamping device further includes an L-shaped plate 17, which is fixed between the screw nut seat 10 and the fixed plate 13. A first slide bar 18 is longitudinally fixedly disposed in the assembly groove 8, and a first slider 19 is fixedly disposed at the inner end of the L-shaped plate 17 to cooperate with the first slide bar 18. In this technical solution, the provision of the L-shaped plate and the provision of the first slider thereon, through the cooperation between the first slider and the first slide bar, makes the up and down movement of the clamping device more stable.

[0055] Furthermore, a second slide bar 20 is longitudinally fixed to the side wall of the bracket 1 adjacent to the assembly slot 8. A bent section of the L-shaped plate 17 is located outside the side wall, and a second slider 21 is provided at the inner end thereof to cooperate with the second slide bar 20. In this technical solution, the cooperation between the second slider and the second slide bar further improves the stability of the vertical movement of the clamping device. Example 2:

[0056] like Figure 6 As shown, a plurality of guardrail lifting devices are regularly arranged, the guardrails on both sides are mounted on the clamping devices of the plurality of guardrail lifting devices, and the evaporator is leaning against the interval 200 between the guardrails.

[0057] In this specific embodiment, in order to solve the problem that manual adjustment of guardrails welded by auxiliary staff in existing workshops is time-consuming, labor-intensive and poses a safety hazard, the above-mentioned solution is to set a guardrail lifting device on the assembly line, which includes a power output device, a power steering device, a lifting device and a clamping device, wherein the power output device includes a servo motor and a worm gear reducer; the power steering device is a gear steering box; the lifting device is a ball screw transmission pair; the guardrail is installed on the clamping device; when the guardrail height needs to be adjusted, the servo motor is remotely controlled to output power to the worm gear reducer, and then to the gear steering boxes on both sides to the ball screws on both sides. The rotation of the ball screw drives the screw nut seat to move up and down, and then drives the clamping device and guardrail installed on the screw nut seat to move up and down to adjust the height of the guardrail, ensuring that the guardrails on both sides rise and fall synchronously, greatly improving the guardrail adjustment efficiency during evaporator model change, and converting the wasted time into production time, improving production efficiency, reducing labor costs and ensuring employee safety.

[0058] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0059] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A guardrail lifting device, characterized in that: It includes a frame, and a power output device, a power steering device, a lifting device and a clamping device arranged on the frame, wherein: The frame comprises two pairs of brackets (1) arranged opposite to each other and a top plate (2) fixedly arranged on the upper ends of the two brackets (1); A power output device, mounted on the top plate (2), suitable for outputting power to the power steering device; The power steering device is provided with two sets and is respectively connected and installed on both sides of the power output device, suitable for converting the lateral power into the longitudinal power; The lifting device is provided in two groups and is respectively arranged on the two brackets (1) along the longitudinal direction, and the upper end of the lifting device is connected to the power steering device and is suitable for driving the clamping device to move up and down; The clamping device is provided with two sets and is respectively installed on the lifting device, suitable for clamping the guardrails on both sides; The power output device can output power to the power steering devices on both sides, and the power steering devices on both sides respectively drive the lifting devices on both sides to operate and drive the clamping devices and guardrails on both sides to move up and down synchronously.

2. A guardrail lifting device according to claim 1, characterized in that: The power output device comprises a servo motor (3) and a worm gear reducer (4); the output shaft of the servo motor (3) is connected to the input shaft of the worm gear reducer (4); and the worm gear reducer (4) is fixed to the upper end of the top plate (2) via a mounting plate (5).

3. A guardrail lifting device according to claim 2, characterized in that: The power steering device is a gear steering box (6), two sets of gear steering boxes (6) are fixed to the upper end of the top plate (2) and distributed on both sides of the worm gear reducer (4), the two ends of the output shaft of the worm gear reducer (4) are respectively connected to the input shafts of the two sets of gear steering boxes (6), and the output shaft of the gear steering box (6) extends downward into the bracket (1) and is connected to the lifting device.

4. A guardrail lifting device according to claim 3, characterized in that: The output shaft of the worm gear reducer (4) and the input shaft of the gear steering box (6) are connected via a first coupling (7).

5. A guardrail lifting device according to claim 3, characterized in that: The two brackets (1) are provided with assembly grooves (8) on opposite sides. The lifting device is a screw transmission pair longitudinally installed in the assembly groove (8), including a ball screw (9) and a screw nut seat (10) sleeved on the ball screw (9). Screw supports (11) are fixedly provided on the upper and lower sides of the assembly groove (8). The upper and lower ends of the ball screw (9) are rotatably inserted into the screw supports (11). The output shaft of the gear steering box (6) extends downward into the assembly groove (8) and is connected to the upper end of the ball screw (9). The output shaft of the gear steering box (6) can drive the ball screw (9) to rotate and drive the screw nut seat (10) to move up and down in the assembly groove (8).

6. A guardrail lifting device according to claim 5, characterized in that: The output shaft of the gear steering box (6) and the upper end of the ball screw (9) are connected via a second coupling (12).

7. A guardrail lifting device according to claim 5, characterized in that: The clamping device comprises a fixing plate (13) fixed to the side end of the screw nut seat (10), the fixing plate (13) having mounting holes on both sides, the mounting holes being penetrated by a clamping rod (14), the inner end of the clamping rod (14) being provided with an arc-shaped frame plate (15) adapted to the guardrail between the two brackets (1), the guardrail passing through and being fixed on the arc-shaped frame plate (15).

8. A guardrail lifting device according to claim 7, characterized in that: A fixing tube (16) is fixedly provided on one end of the fixing plate (13) facing away from the arc-shaped frame plate (15) outside a corresponding mounting hole, and the clamping rod (14) is adapted to pass through the fixing tube (16) and then extend out of the mounting hole.

9. A guardrail lifting device according to claim 7, characterized in that: The clamping device further comprises an L-shaped plate (17), wherein the L-shaped plate (17) is fixed between the screw nut seat (10) and the fixing plate (13), a first sliding rod (18) is longitudinally fixedly arranged in the assembly groove (8), and a first sliding block (19) cooperating with the first sliding rod (18) is fixedly arranged at the inner end of the L-shaped plate (17).

10. A guardrail lifting device according to claim 9, characterized in that: A second slide bar (20) is longitudinally fixedly provided on the side wall of the bracket (1) adjacent to the assembly groove (8); a section of the L-shaped plate (17) is bent and located outside the side wall, and a second slide block (21) cooperating with the second slide bar (20) is provided at the inner end.

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