Lifting appliance positioning device

Abstract

The invention discloses a lifting appliance positioning device, and relates to the field of positioning devices. A piston rod is connected with an air cylinder body and can move in the axis direction of the piston rod; the positioning piece is arranged on the piston rod and used for being in positioning fit with a positioning hole of a lifting appliance; the guide mechanism is arranged on the mounting frame and provided with a guide hole, and the positioning piece penetrates through the guide hole and is in clearance fit with the guide hole. Therefore, the driving air cylinder is adopted as a driving mechanism, the piston rod moves to drive the positioning piece to move so as to achieve positioning, the anti-explosion requirement can be met, other transmission components are not needed, twisting force is avoided, the risk of positioning failure caused by component breakage due to fatigue stress concentration is reduced, and meanwhile the overall structure is simple and convenient to operate. The operation and maintenance difficulty of the lifting appliance positioning device can be reduced, the operation and maintenance efficiency can be improved, in addition, by arranging the guiding mechanism, accurate guiding can be provided for movement of the positioning piece, the positioning accuracy is improved, and the risk that positioning fails due to deviation of the positioning piece or the positioning piece collides with the lifting appliance to be damaged is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of positioning devices, in particular to a lifting device positioning device. BACKGROUND

[0002] In related technologies, the inverted lifting device positioning device of the coating production line mainly adopts motor driving, the core of which is to drive the positioning pin to complete the extension and retraction action through torque transmission by means of the coupling crank connection structure of the motor output shaft to realize the lifting device positioning function. However, this lifting device positioning device has design defects. For some application scenarios that have explosion-proof level requirements, an explosion-proof motor needs to be additionally configured to meet safety specifications. In addition, the connection node of the motor output shaft and the crank mechanism is subjected to periodic torsional torque for a long time, and is prone to fatigue stress concentration under alternating load. With the accumulation of running time, the connection part is prone to fracture failure, which not only leads to the paralysis of the positioning function, but also may cause safety production hazards such as lifting device deviation. In addition, this lifting device positioning device has a complex structure, which seriously increases the operation and maintenance difficulty of the device. Moreover, the positioning precision of this lifting device positioning device is not high, and it is difficult to achieve precise positioning. SUMMARY

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a lifting device positioning device that can meet the application requirements of explosion-proof areas, does not require other transmission components, can reduce the risk of positioning failure, has a simple structure, can improve operation and maintenance efficiency, and can provide precise guidance for the movement of the positioning member to improve positioning precision.

[0004] The lifting device positioning device according to the present application comprises a mounting frame, a drive cylinder, a positioning member, and a guide mechanism. The drive cylinder comprises a cylinder body and a piston rod. The cylinder body is arranged on the mounting frame, and the piston rod is connected with the cylinder body and is movable along the axial direction of the piston rod. The positioning member is arranged on the piston rod and is used for positioning cooperation with the positioning hole of the lifting device. The guide mechanism is arranged on the mounting frame and forms a guide hole. The positioning member is arranged in the guide hole and is in clearance cooperation with the guide hole.

[0005] The lifting device positioning device according to the present application uses a drive cylinder as a driving mechanism, moves the positioning member through the movement of the piston rod to realize positioning, can meet the application requirements of explosion-proof areas, does not require other transmission components, avoids the generation of torsional force, reduces the risk of fatigue stress concentration causing component fracture and then leading to positioning failure, the overall structure is simple, which can reduce the operation and maintenance difficulty of the lifting device positioning device and improve operation and maintenance efficiency. In addition, by arranging the guide mechanism, precise guidance can be provided for the movement of the positioning member to improve positioning precision and reduce the risk of positioning failure or collision damage between the positioning member and the lifting device caused by the deviation of the positioning member.

[0006] In some examples of the present application, the mounting frame comprises: a frame body, a support body, the frame body comprises: a plurality of first beam bodies, a plurality of second beam bodies, the plurality of first beam bodies are sequentially connected to form a frame structure, along the extension direction of the second beam bodies, the plurality of second beam bodies are located at the same end of the frame structure and are connected to the frame structure near one end of the frame structure, and the plurality of second beam bodies are arranged in a ring shape, the support body is arranged on the frame body, and the cylinder body and the guide mechanism are arranged on the support body.

[0007] In some examples of the present application, the support body comprises: a first sub-body, a second sub-body, and a third sub-body, the third sub-body is arranged on the frame body, the second sub-body is connected between the first sub-body and the third sub-body, the cylinder body is arranged on the first sub-body, and the guide mechanism is arranged on the third sub-body.

[0008] In some examples of the present application, along the extension direction of the second beam bodies, the first sub-body and the third sub-body are arranged on the two sides of the frame structure.

[0009] In some examples of the present application, the lifting device positioning device further comprises: a flexible damping member arranged between the cylinder body and the first sub-body.

[0010] In some examples of the present application, the guide mechanism comprises: a guide sleeve and a guide support, the guide support is arranged on the third sub-body, and the guide sleeve is arranged on the guide support and forms the guide hole.

[0011] In some examples of the present application, the guide support is formed with an assembly hole, and the guide sleeve is interference fitted in the assembly hole. And / or, a lubricating groove is formed in the peripheral wall of the guide hole, and the lubricating groove is used for accommodating a lubricating medium.

[0012] In some examples of the present application, the piston rod is formed with one of a threaded hole and a threaded portion, the positioning member is formed with the other one of the threaded hole and the threaded portion near one end of the piston rod, and the threaded portion is threadedly matched with the threaded hole. And / or, further comprising: a sealing member arranged in the guide hole and located between the inner wall of the guide hole and the positioning member, and two sealing members are arranged at two ends of the guide hole along the extension direction of the guide hole. And / or, the surface of the mounting frame has a corrosion-resistant coating.

[0013] In some examples of the present application, the positioning member is configured as a guide portion at an end thereof away from the piston rod, and a cross-sectional area of the guide portion gradually increases from the end of the positioning member away from the piston rod to a direction close to the piston rod to form a guide surface.

[0014] In some examples of the present application, the guide portion includes a first sub-guide portion and a second sub-guide portion, the second sub-guide portion is closer to the piston rod than the first sub-guide portion, the first sub-guide portion is formed with a first sub-guide surface, the second sub-guide portion is formed with a second sub-guide surface, the first sub-guide surface and the second sub-guide surface jointly form the guide surface, and a taper of the first sub-guide surface is greater than a taper of the second sub-guide surface.

[0015] Additional aspects and advantages of the present application will be made apparent from the following description of embodiments of the present application, which is given only by way of example. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of embodiments of the present application, taken in conjunction with the accompanying drawings in which: Figure 1 is a structural schematic diagram of a sling positioning device according to an embodiment of the present application; Figure 2 is a structural schematic diagram of a mounting rack according to an embodiment of the present application; Figure 3 is a structural schematic diagram of a driving cylinder according to an embodiment of the present application; Figure 4 is a structural schematic diagram of a positioning member according to an embodiment of the present application; Figure 5 is a structural schematic diagram of a guide mechanism according to an embodiment of the present application.

[0017] REFERENCE NUMERALS: sling positioning device 100; mounting rack 1; frame body 11; first beam body 111; second beam body 112; mounting hole 1121; support body 12; first sub-body 121; second sub-body 122; third sub-body 123; driving cylinder 2; cylinder body 21; piston rod 22; positioning member 3; guide portion 31; guide mechanism 4; guide support 41; assembly hole 411. DETAILED DESCRIPTION

[0018] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, for the purpose of explanation, and are not to be understood as limiting the present application.

[0019] Reference is made below to Figures 1-5 A spreader positioning device 100 according to an embodiment of the present application is described below.

[0020] As Figures 1-5 shown, the spreader positioning device 100 according to an embodiment of the present application comprises a mounting bracket 1, a driving cylinder 2, a positioning member 3, and a guide mechanism 4. The driving cylinder 2 comprises a cylinder body 21 and a piston rod 22. The cylinder body 21 is arranged on the mounting bracket 1, and the piston rod 22 is connected with the cylinder body 21 and movable along the axial direction of the piston rod 22. The positioning member 3 is arranged on the piston rod 22 and used for positioning cooperation with a positioning hole of a spreader. The guide mechanism 4 is arranged on the mounting bracket 1 and formed with a guide hole. The positioning member 3 is arranged in the guide hole and in clearance cooperation with the guide hole.

[0021] The cylinder body 21 is arranged on the mounting bracket 1. As some embodiments of the present application, the connection mode of the cylinder body 21 with the mounting bracket 1 can be, but is not limited to, clamping connection, bolt connection, etc.

[0022] The piston rod 22 is connected with the cylinder body 21 and movable along the axial direction of the piston rod 22. As some embodiments of the present application, the piston rod 22 can reciprocate along the axial direction of the piston rod 22.

[0023] As some embodiments of the present application, the driving cylinder 2 of the spreader positioning device 100 of the present application is selected as a standard driving cylinder 2 with a cylinder diameter of 100 mm. The driving cylinder 2 with this specification has the advantages of large output force, fast response speed of action, smooth running, etc., and can meet the requirements of the spreader positioning device 100 on the thrust and action speed of the positioning member 3 in the positioning process.

[0024] As some embodiments of the present application, the material of the cylinder body 21 can be high-strength aluminum alloy. This material not only has excellent strength and rigidity, can withstand impact force and pressure in the positioning process, but also has good corrosion resistance, can effectively resist the corrosion of common corrosive media such as paint and solvent in the coating production line to the cylinder body 21, so as to prolong the service life of the cylinder body 21 and ensure the long-term stable operation of the driving cylinder 2.

[0025] The positioning member 3 is arranged on the piston rod 22. As some embodiments of the present application, the piston rod 22 can drive the positioning member 3 to move along the axial direction of the piston rod 22. Specifically, the positioning member 3 can reciprocate along the axial direction of the piston rod 22.

[0026] As some embodiments of the present application, the connection mode of the positioning member 3 and the piston rod 22 can be, but is not limited to, a clamping connection, a bolt connection, etc.

[0027] The positioning member 3 is used for positioning cooperation with the positioning hole of the lifting appliance. As some embodiments of the present application, one end of the positioning member 3 is connected with the piston rod 22 along the length direction of the positioning member 3, and the other end of the positioning member 3 is positioned and cooperated with the positioning hole of the lifting appliance. The positioning member 3 can be directly inserted into the positioning hole of the lifting appliance for positioning.

[0028] As some embodiments of the present application, the length direction of the positioning member 3 is the same as the axis direction of the piston rod 22, and both are the Z direction shown in the figure. Figure 1

[0029] As some embodiments of the present application, the material of the positioning member 3 can be high-strength alloy structural steel. This material has high strength, hardness and wear resistance, and can withstand the impact force and extrusion force generated when the positioning member 3 is inserted into the positioning hole of the lifting appliance during positioning, reducing the risk of bending, deformation or wear of the positioning member 3, to ensure the long-term stability of the positioning accuracy of the positioning process, and prolong the service life of the lifting appliance positioning device 100.

[0030] As some embodiments of the present application, when the positioning member 3 is processed, the surface of the positioning member 3 can be precisely ground to ensure that the size accuracy and surface roughness of the positioning member 3 meet the high-precision positioning requirements, reduce the fitting gap between the positioning member 3 and the positioning hole of the lifting appliance, and further improve the positioning accuracy.

[0031] The guide mechanism 4 is provided on the mounting bracket 1 and forms a guide hole. As some embodiments of the present application, the guide mechanism 4 is fixedly connected with the mounting bracket 1, and the guide mechanism 4 forms a guide hole. The guide mechanism 4 can provide accurate guidance for the movement of the positioning member 3, so that the positioning member 3 always moves along the same axis, to ensure the accuracy of the movement direction of the positioning member 3, and reduce the risk of positioning failure or damage to the positioning member 3 and the positioning hole of the lifting appliance caused by the deviation of the positioning member 3.

[0032] As some embodiments of the present application, the connection mode of the guide mechanism 4 and the mounting bracket 1 can be, but is not limited to, welding connection, clamping connection, bolt connection, etc.

[0033] The positioning member 3 is provided in the guide hole and cooperates with the guide hole. As some embodiments of the present application, the inner diameter of the guide hole is greater than the outer diameter of the positioning member 3. The fitting gap between the positioning member 3 and the guide hole can be set to 0.02mm-0.05mm. This setting can ensure smooth sliding of the positioning member 3 in the guide hole, and can effectively limit the radial displacement of the positioning member 3, further improving the positioning accuracy.

[0034] ​The lifting appliance positioning device 100 of the present application can be applied to positioning an inverted lifting appliance, and the positioning of the inverted lifting appliance by the lifting appliance positioning device 100 is described herein as an example.

[0035] It should be noted that, fully considering the operating environment characteristics of the coating production line, especially the application requirements of the explosion-proof area, the lifting appliance positioning device 100 of the present application adopts a driving cylinder 2 as a driving mechanism, and the power source of the driving cylinder 2 is compressed air. During the operation of the driving cylinder 2, no electric spark is generated, which fundamentally eliminates the safety hazards that may be caused by the operation of the motor in the traditional motor-driven positioning mechanism. Therefore, the lifting appliance positioning device 100 of the present application can meet the application requirements of the explosion-proof area without the need for additional explosion-proof motors, which significantly reduces the procurement cost and the difficulty of explosion-proof maintenance. The lifting appliance positioning device 100 of the present application is provided with the cylinder body 21 on the mounting bracket 1, the piston rod 22 is connected with the cylinder body 21 and is movable along the axial direction of the piston rod 22, and the positioning member 3 is arranged on the piston rod 22. The movement of the piston rod 22 can drive the positioning member 3 to move, so that the positioning member 3 is positioned without the need for other transmission components, which avoids the generation of torsional force and reduces the risk of fatigue stress concentration causing component fracture and further leading to positioning failure. In addition, the overall structure is simple, which can reduce the difficulty of early installation and debugging of the lifting appliance positioning device 100, and is conducive to the later point inspection, maintenance and fault diagnosis operation, thereby significantly improving the convenience and efficiency of the operation and maintenance of the lifting appliance positioning device 100. Furthermore, the lifting appliance positioning device 100 of the present application is provided with the guide mechanism 4 arranged on the mounting bracket 1 and forming a guide hole, and the positioning member 3 is arranged in the guide hole and is in clearance fit with the guide hole. The movement of the positioning member 3 can be precisely guided to ensure the accurate movement direction of the positioning member 3, thereby improving the positioning accuracy and reducing the risk of positioning failure caused by the deviation of the positioning member 3 or the collision damage between the positioning member 3 and the positioning hole of the lifting appliance.

[0036] Therefore, the lifting appliance positioning device 100 of the present application adopts the driving cylinder 2 as a driving mechanism, and the movement of the piston rod 22 drives the positioning member 3 to move to achieve positioning. The lifting appliance positioning device 100 can meet the explosion-proof requirements without the need for other transmission components, which avoids the generation of torsional force and reduces the risk of fatigue stress concentration causing component fracture and further leading to positioning failure. In addition, the overall structure is simple, which can reduce the difficulty of operation and maintenance of the lifting appliance positioning device 100 and improve the operation and maintenance efficiency. Furthermore, the guide mechanism 4 is arranged to provide precise guidance for the movement of the positioning member 3, improve the positioning accuracy, and reduce the risk of positioning failure caused by the deviation of the positioning member 3 or the collision damage between the positioning member 3 and the lifting appliance.

[0037] In some embodiments of the present application, as shown in Figure 2 The mounting bracket 1 includes a frame body 11 and a support body. The frame body 11 includes a plurality of first beam bodies 111 and a plurality of second beam bodies 112. The first beam bodies 111 are sequentially connected end to end to form a frame structure. The second beam bodies 112 are arranged in the frame structure and extend along the second beam bodies 112.Figure 1 As shown in the Z direction), the plurality of second beam bodies 112 are connected with the frame structure at the same end of the frame structure and close to one end of the frame structure, and the plurality of second beam bodies 112 are arranged in a surrounding manner. The bracket body is arranged on the frame body 11, and the cylinder body 21 and the guide mechanism 4 are arranged on the bracket body.

[0038] As some embodiments of the present application, the number of the first beam bodies 111 is three, and the three first beam bodies 111 are sequentially connected in a head-to-tail manner to form a “triangular” frame structure. As some embodiments of the present application, the number of the first beam bodies 111 is four, and the four first beam bodies 111 are sequentially connected in a head-to-tail manner to form a “rectangular” frame structure.

[0039] In the extension direction of the second beam body 112 (i.e. Figure 1 As shown in the Z direction), the plurality of second beam bodies 112 are connected with the frame structure at the same end of the frame structure and close to one end of the frame structure, and the plurality of second beam bodies 112 are arranged in a surrounding manner. The bracket body is arranged on the frame body 11, and the cylinder body 21 and the guide mechanism 4 are arranged on the bracket body.

[0040] As some embodiments of the present application, the extension direction of the second beam body 112 is the same as the axis direction of the piston rod 22 and the length direction of the positioning member 3, and is the Z direction as shown. Figure 1

[0041] As some embodiments of the present application, the number of the second beam bodies 112 is three, four, five, etc.

[0042] As some embodiments of the present application, the plurality of second beam bodies 112 are arranged in a surrounding manner along the circumferential direction of the frame structure.

[0043] As some embodiments of the present application, the number of the first beam bodies 111 and the number of the second beam bodies 112 are both three, the three first beam bodies 111 are sequentially connected in a head-to-tail manner to form a “triangular” frame structure, and in the extension direction of the second beam body 112 (i.e. Figure 1 ​As shown in the Z direction), three second beam bodies 112 are connected with the frame structure at the same end of the frame structure and close to one end of the frame structure, and the three second beam bodies 112 are arranged in a ring shape, at this time, the frame body 11 is a tripod structure. Figure 1 As shown in the Z direction), four second beam bodies 112 are connected with the frame structure at the same end of the frame structure and close to one end of the frame structure, and the four second beam bodies 112 are arranged in a ring shape, at this time, the frame body 11 is a quadruped structure.

[0044] As some embodiments of the present application, the material of the frame body 11 can be high-quality carbon structural steel, which is processed by welding process, and then surface corrosion prevention treatment (such as galvanizing or spraying anticorrosive paint) is performed to improve the corrosion resistance and oxidation resistance of the frame body 11 to adapt to the harsh working environment of the painting production line.

[0045] The support body is provided with the frame body 11, and the cylinder body 21 and the guide mechanism 4 are provided with the support body. As some embodiments of the present application, the connection mode of the support body and the frame body 11 can be but not limited to welding connection, clamping connection, bolt connection, etc., and the connection mode of the cylinder body 21 and the guide mechanism 4 and the support body can be but not limited to clamping connection, bolt connection, etc.

[0046] As some embodiments of the present application, along the extension direction of the second beam body 112 (i.e. Figure 1 As shown in the Z direction), the end of the plurality of second beam bodies 112 away from the frame structure is formed with a mounting hole 1121 and cooperates with a bolt to enable the frame body 11 to be arranged on the fixed base of the production line. Specifically, the fixed base (such as an equipment rack, a ground embedded part, etc.) of the production line is formed with a matching hole corresponding to the mounting hole 1121, and along the extension direction of the second beam body 112 (i.e. Figure 1 As shown in the Z direction), the bolt is sequentially arranged in the corresponding mounting hole 1121 and the matching hole and cooperates with a nut to enable the frame body 11 to be arranged on the fixed base of the production line. This mounting mode is flexible and reliable, and is convenient to disassemble. The installation position and height of the frame body 11 can be adjusted according to the layout requirements of the actual production line, and then the installation position and height of the spreader positioning device 100 can be adjusted. The space requirement of the spreader positioning device 100 during installation can be effectively reduced, and the space adaptability of the spreader positioning device 100 is improved.

[0047] As some embodiments of the present application, the mounting hole 1121 can be configured as a waist-shaped hole with a diameter of 18 mm and a length-diameter ratio of 30 mm, so that the mounting position of the lifting tool positioning device 100 can be adjusted within a range of ±10 mm to adapt to the hole position deviation of the original rack in the workshop.

[0048] Such arrangement can stabilize the structure of the mounting rack 1 and uniformly distribute the force, and can provide reliable fixed support for the lifting tool positioning device 100 to ensure that the driving cylinder 2 does not displace or shake during the positioning process, thereby ensuring the positioning accuracy, and can significantly reduce the occupied installation space, facilitate the disassembly and assembly of the lifting tool positioning device 100, and at the same time, the frame body 11 has sufficient clearance inside, the overall structure is simple, and the key parts (such as the inlet and outlet of the driving cylinder 2, the piston rod 22 connection part, etc.) of the lifting tool positioning device 100 are all in an open and easily observable position, which provides sufficient space for daily inspection and maintenance operation of the staff, and improves the operation convenience.

[0049] In some embodiments of the present application, as shown in Figure 2 the bracket body includes a first sub-body 121, a second sub-body 122, and a third sub-body 123, the third sub-body 123 is arranged on the frame body 11, the second sub-body 122 is connected between the first sub-body 121 and the third sub-body 123, the cylinder body 21 is arranged on the first sub-body 121, and the guide mechanism 4 is arranged on the third sub-body 123.

[0050] The third sub-body 123 is arranged on the frame body 11, as some embodiments of the present application, as shown in Figure 2 the third sub-body 123 is arranged on the frame structure, specifically, along the extension direction of the second beam body 112 (i.e. the Z direction shown in Figure 1 the third sub-body 123 is arranged on the frame structure close to one side of the second beam body 112, and the connection mode of the third sub-body 123 and the frame structure can be but is not limited to welding connection, clamping connection, bolt connection, etc.

[0051] The second sub-body 122 is connected between the first sub-body 121 and the third sub-body 123, as some embodiments of the present application, as shown in Figure 2 the second beam body 112 (i.e. the Z direction shown in Figure 1As shown in the Z direction along the extension direction of the second beam body 112), the first sub-body 121 is located on the side of the frame structure away from the second beam body 112, and the third sub-body 123 is located on the side of the frame structure close to the second beam body 112. The first sub-body 121 and the third sub-body 123 are connected through the second sub-body 122. As some embodiments of the present application, the connection mode of the second sub-body 122 with the first sub-body 121 and the third sub-body 123 can be, but is not limited to, welding connection, clamping connection, bolt connection, etc., or the first sub-body 121, the second sub-body 122 and the third sub-body 123 can be integrally formed.

[0052] The cylinder body 21 is arranged on the first sub-body 121, and the guide mechanism 4 is arranged on the third sub-body 123. As some embodiments of the present application, the cylinder body 21 can be arranged on the first sub-body 121 through clamping, screwing or the like, and the guide mechanism 4 can be arranged on the third sub-body 123 through clamping, screwing or the like.

[0053] Such arrangement makes the support body structure reasonable, can provide sufficient installation space for the cylinder body 21 and the guide mechanism 4, and facilitates the installation of the cylinder body 21 and the guide mechanism 4.

[0054] In some embodiments of the present application, as shown in the Z direction along the extension direction of the second beam body 112), the first sub-body 121 and the third sub-body 123 are arranged on the two sides of the frame structure. Figure 2 Figure 1 As some embodiments of the present application, along the extension direction of the second beam body 112 (i.e. the Z direction shown), the first sub-body 121 is located on the side of the frame structure away from the second beam body 112, and the third sub-body 123 is located on the side of the frame structure close to the second beam body 112.

[0055] As some embodiments of the present application, along the extension direction of the second beam body 112 (i.e. the Z direction shown), the first sub-body 121 and the third sub-body 123 are arranged on the two sides of the frame structure. Figure 1 As some embodiments of the present application, along the extension direction of the second beam body 112 (i.e. the Z direction shown), the first sub-body 121 and the third sub-body 123 are arranged on the two sides of the frame structure.

[0056] Figure 1 Such arrangement can reasonably utilize the space of the hoist positioning device 100 along the extension direction of the second beam body 112 (i.e. the Z direction shown), facilitate the installation of the cylinder body 21 and the guide mechanism 4, and facilitate the correspondence between the movement track of the piston rod 22 and the defined track of the guide mechanism 4, so as to improve the positioning accuracy.

[0057] Such arrangement can reasonably utilize the space of the hoist positioning device 100 along the extension direction of the second beam body 112 (i.e. the Z direction shown), facilitate the installation of the cylinder body 21 and the guide mechanism 4, and facilitate the correspondence between the movement track of the piston rod 22 and the defined track of the guide mechanism 4, so as to improve the positioning accuracy. Figure 1 In some embodiments of the present application, the hoist positioning device 100 further comprises a flexible damping member arranged between the cylinder body 21 and the first sub-body 121.

[0058]

[0059] ​​​As some embodiments of the present application, the flexible damping member can be configured as an oil-resistant rubber pad, and the present application selects an oil-resistant rubber pad with a thickness of 3 mm, In this way, vibration transmission when the driving cylinder 2 is actuated can be reduced, the driving cylinder 2 can be kept stable, and positioning accuracy can be ensured.

[0060] In some embodiments of the present application, the guide mechanism 4 comprises a guide sleeve and a guide bracket 41, the guide bracket 41 is arranged on the third sub-body 123, and the guide sleeve is arranged on the guide bracket 41 and forms a guide hole.

[0061] The guide bracket 41 is arranged on the third sub-body 123, and as some embodiments of the present application, the guide bracket 41 can be arranged on the third sub-body 123 by clamping, screwing or the like.

[0062] The guide sleeve is arranged in the guide bracket 41 and forms a guide hole, and as some embodiments of the present application, the guide sleeve is arranged in the guide bracket 41, and the positioning member 3 is assembled in cooperation with the guide hole.

[0063] As some embodiments of the present application, the guide sleeve can be made of wear-resistant cast iron.

[0064] As some embodiments of the present application, the length of the guide bracket 41 can be reasonably designed according to the maximum extension length of the positioning member 3, so as to ensure that the positioning member 3 can be effectively guided in the entire movement stroke.

[0065] In this way, accurate guidance can be provided for the movement of the positioning member 3, so as to ensure the accurate movement direction of the positioning member 3 and improve positioning accuracy.

[0066] In some embodiments of the present application, as shown in Figure 5 The guide bracket 41 forms an assembly hole 411, and the guide sleeve is interference-fitted in the assembly hole 411; And / or, the peripheral wall of the guide hole forms a lubricating groove for accommodating lubricating medium.

[0067] The guide bracket 41 forms an assembly hole 411, and the guide sleeve is interference-fitted in the assembly hole 411, or the peripheral wall of the guide hole forms a lubricating groove for accommodating lubricating medium, or the guide bracket 41 forms an assembly hole 411, and the guide sleeve is interference-fitted in the assembly hole 411, and the peripheral wall of the guide hole forms a lubricating groove for accommodating lubricating medium.

[0068] The guide bracket 41 forms an assembly hole 411, and the guide sleeve is interference-fitted in the assembly hole 411, and as some embodiments of the present application, the assembly hole 411 is matched with the guide sleeve, the axis of the assembly hole 411 coincides with the axis of the guide hole, and the guide sleeve is fixed in the assembly hole 411 by interference fitting.

[0069] This arrangement can reduce the risk of the guide sleeve deviating during positioning, thereby reducing the risk of the positioning member 3 deviating and causing positioning failure or collision damage between the positioning member 3 and the lifting tool, and further improving positioning accuracy.

[0070] The circumferential wall of the guide hole is formed with a lubricating groove, and the lubricating medium can be configured as lubricating oil, lubricating grease, solid lubricant (such as graphite, molybdenum disulfide), etc. as some embodiments of the present application.

[0071] By periodically filling the lubricating groove with lubricating medium to form a stable lubricating film, the friction coefficient between the positioning member 3 and the guide sleeve can be reduced, thereby reducing the friction and wear between the positioning member 3 and the guide sleeve, and prolonging the service life of the positioning member 3 and the guide sleeve.

[0072] In some embodiments of the present application, as shown in Figure 3 and Figure 4 , the piston rod 22 is formed with one of a threaded hole and a threaded portion, and the positioning member 3 is formed with the other of a threaded hole and a threaded portion at one end close to the piston rod 22, and the threaded portion and the threaded hole are threadedly engaged.

[0073] As some embodiments of the present application, the piston rod 22 is formed with a threaded hole, and the positioning member 3 is formed with a threaded portion at one end close to the piston rod 22, or the piston rod 22 is formed with a threaded portion, and the positioning member 3 is formed with a threaded hole at one end close to the piston rod 22, and the threaded portion and the threaded hole are threadedly engaged.

[0074] As some embodiments of the present application, the connection between the piston rod 22 and the positioning member 3 is further fixed by a lock nut to firmly connect the piston rod 22 and the positioning member 3, improve the connection reliability of the piston rod 22 and the positioning member 3, reduce the risk of the piston rod 22 and the positioning member 3 loosening during the operation of the driving cylinder 2, and improve the synchronization and stability of the operation of the positioning member 3.

[0075] This arrangement facilitates reliable connection of the piston rod 22 and the positioning member 3 to drive the positioning member 3 to move along the axial direction of the piston rod 22 (i.e. the Z direction as shown in Figure 1 ) by the piston rod 22 for positioning.

[0076] In some embodiments of the present application, further comprising: a sealing member arranged in the guide hole and located between the inner wall of the guide hole and the positioning member 3, and the two sealing members are arranged at both ends of the guide hole in the extension direction of the guide hole.

[0077] In some embodiments of the present application, the extension direction of the guide hole is the same as the axial direction of the piston rod 22, the length direction of the positioning member 3, and the extension direction of the second beam body 112, and all are the Z direction as shown in Figure 1 .

[0078] In this way, the impurities such as dust and paint particles in the coating production line can be effectively prevented from entering the guide sleeve, the influence of the impurities on the cooperation precision of the positioning member 3 and the guide sleeve is reduced, and the guide mechanism 4 can be stably operated for a long time.

[0079] In some embodiments of the present application, the surface of the mounting frame 1 has a corrosion-resistant coating.

[0080] As some embodiments of the present application, the surface of the mounting frame 1 can be subjected to corrosion-resistant treatment by galvanizing (zinc layer thickness not less than 85 μm) or spraying a corrosion-resistant coating, and further, an epoxy zinc-rich primer (dry film thickness 60 μm) and a polyurethane topcoat (dry film thickness 40 μm) can be sprayed to form a double corrosion-resistant protective layer.

[0081] In this way, the mounting frame 1 can be kept stable in a humid and corrosive medium environment in the coating workshop, and the service life of the mounting frame 1 is prolonged.

[0082] In some embodiments of the present application, as shown in Figure 4 As shown in FIG. 1, the end of the positioning member 3 away from the piston rod 22 is configured as a guide portion 31, and the cross-sectional area of the guide portion 31 gradually increases from the direction of the end of the positioning member 3 away from the piston rod 22 to the direction close to the piston rod 22 to form a guide surface.

[0083] As some embodiments of the present application, the guide portion 31 can be configured as a conical guide structure.

[0084] In this way, the guide portion 31 can play a guiding role in the process of inserting the positioning member 3 into the positioning hole of the lifting tool, and even if there is a slight positional deviation between the positioning hole of the lifting tool and the positioning member 3, the positioning member 3 can be guided by the guide portion 31 to achieve precise butt joint, and the fault tolerance and reliability of the positioning process are improved.

[0085] In some embodiments of the present application, the guide portion 31 includes a first sub-guide portion and a second sub-guide portion, the second sub-guide portion is closer to the piston rod 22 than the first sub-guide portion, the first sub-guide portion forms a first sub-guide surface, the second sub-guide portion forms a second sub-guide surface, the first sub-guide surface and the second sub-guide surface jointly constitute the guide surface, and the taper of the first sub-guide surface is greater than the taper of the second sub-guide surface.

[0086] As some embodiments of the present application, the guide portion 31 can be configured as a double-conical guide structure.

[0087] As some embodiments of the present application, the taper of the first sub-guide portion can be 1:12, and the length can be 30 mm, and the taper of the second sub-guide portion can be 1:8, and the length can be 40 mm.

[0088] In this way, the two-step guiding of "rough positioning-precise positioning" can be realized, and even if there is a large position deviation (for example, deviation ±2mm) of the lifting appliance, precise docking can be realized through the joint guiding of the first and second sub-guiding surfaces.

[0089] The working process of the lifting appliance positioning device 100 of the present application is realized based on compressed air driving and mechanical structure cooperation, and the specific working process is as follows: When the coating production line needs to position the inverted lifting appliance, the control system introduces compressed air into the gas inlet of the driving cylinder 2, the compressed air pushes the piston rod 22 to extend, and since the positioning piece 3 is connected with the piston rod 22, the piston rod 22 extends at the same time to drive the positioning piece 3 to move synchronously. During the movement of the positioning piece 3, the guide sleeve in the guide mechanism 4 precisely guides the positioning piece 3, ensuring that the positioning piece 3 moves in a straight line, and finally accurately inserts into the positioning hole of the inverted lifting appliance, realizing the positioning and fixing of the lifting appliance.

[0090] When the lifting appliance positioning is needed to be released, the control system controls the exhaust of the exhaust port of the driving cylinder 2, and at the same time introduces compressed air into the other gas inlet of the driving cylinder 2 to push the piston rod 22 to retract, and the piston rod 22 drives the positioning piece 3 to retract synchronously, and the positioning piece 3 withdraws from the lifting appliance positioning hole, and the lifting appliance can be moved or transported.

[0091] As a specific embodiment of the present application, according to the actual working condition and positioning requirement of the inverted lifting appliance in a certain coating workshop, a standard double-acting driving cylinder 2 (model: SC100x150-S) with a cylinder diameter of 100mm and a stroke of 150mm is selected. The rated working pressure of the driving cylinder 2 is 0.4MPa-0.8MPa, and when the working pressure is 0.6MPa, the output force can reach 3770N, which is far more than the required insertion force requirement, ensuring that the positioning piece 3 can be stably inserted into the lifting appliance positioning hole; the action speed of the driving cylinder 2 can be adjusted in the range of 50mm / s-500mm / s, and by adding a flow control valve in the gas circuit, the action response time can be controlled in the range of 0.25s-0.35s, which fully matches the production line beat requirement.

[0092] Considering that there are paint mist and solvent vapor inside the explosion-proof chamber of the coating workshop, the cylinder body of the driving cylinder 2 is made of high-strength 6061 aluminum alloy material, and the surface is treated by hard anodic oxidation (oxidation film thickness ≥15μm), which not only has excellent impact resistance (can withstand the instantaneous impact force when the lifting appliance is positioned), but also can effectively resist the corrosion of paint solvent; the sealing element is made of oil-resistant and solvent-resistant polyurethane material (model: PU85A), and fluororubber auxiliary sealing is added in the sealing groove, which ensures that the driving cylinder 2 has no air leakage phenomenon in the environment of long-term contact with paint mist, and the service life can reach more than 80000 times.

[0093] The mounting frame 1 is made of Q235B carbon structural steel as raw material, and is processed by numerical control laser cutting (cutting accuracy ±0.1 mm), robot welding (welding height ≥8 mm, no false welding, porosity), shot blasting (rust removal grade Sa2.5 level) and other processes. The first beam body 111 and the second beam body 112 are both square steel with a cross-sectional size of 60mm x 60mm x 6mm, which is 20% larger than the cross-sectional size of the traditional support, so as to improve the support strength and meet the load requirement when the 1200kg lifting appliance is positioned. The length of the second beam body 112 is determined as 400mm according to the equipment layout height in the explosion-proof chamber of a coating workshop (the distance from the ground to the bottom of the lifting appliance track is 2.8m), and a waist-shaped hole (length 30mm) with a diameter of 18mm is arranged at the bottom of the second beam body 112, which can adjust the installation position within ±10mm and adapt to the hole deviation of the original rack in the workshop.

[0094] After the mounting frame 1 is welded, it is subjected to overall hot galvanizing treatment (zinc layer thickness not less than 85μm), and is sprayed with epoxy zinc-rich primer (dry film thickness 60μm) and polyurethane topcoat (dry film thickness 40μm) on the surface to form a double corrosion protection layer, so as to ensure that the service life of the support can reach more than 10 years in the humid and corrosive environment of the coating workshop.

[0095] The positioning member 3 is made of 40CrNiMoA alloy structural steel as raw material (compared with ordinary 40Cr steel, the yield strength is improved by 30%, and the impact toughness is improved by 25%), and is processed by forging (normalizing treatment after forging, hardness HB180-220), rough machining (2mm allowance), quenching and tempering treatment (quenching temperature 850℃, tempering temperature 580℃, hardness HRC28-32), finishing (numerical control lathe processing, size tolerance IT6 level), surface chromium plating (chromium plating layer thickness 0.05-0.08mm, surface roughness Ra≤0.4μm) and other processes.

[0096] The total length of the positioning member 3 is 320 mm, wherein the length of the threaded section connected with the piston rod 22 is 40 mm, the threaded specification is M24x2 (matching accuracy 5g), and the load bearing capacity of the positioning member 3 connected with the piston rod 22 is ensured; the guide part 31 adopts a double-tapered structure (the taper of the second sub-guide part is 1:8, and the length is 30 mm; the taper of the first sub-guide part is 1:12, and the length is 40 mm), and the double-tapered structure can realize two-step guiding of “rough positioning-precise positioning”, that is, even if the position deviation of the lifting appliance is ±2 mm, the precise docking can also be realized through the guiding of the second sub-guide surface; the nominal diameter of the positioning member 3 is 35 mm, and the matching gap of the positioning member 3 with the positioning hole of the lifting appliance is controlled within 0.05-0.08 mm, so that the positioning accuracy is ensured, and the jamming caused by too tight matching is avoided. At the connecting position of the positioning member 3 and the piston rod 22, a high-strength lock nut (model: M24, material: 35CrMoA) and a disc spring (specification: Φ24xΦ12x2 mm) are arranged, and the disc spring can provide a continuous pre-tightening force to prevent the nut from loosening due to vibration during frequent operation.

[0097] The guide sleeve is made of HT350 wear-resistant cast iron material (compared with HT300 cast iron, the tensile strength is increased by 17%, and the wear resistance is increased by 20%), and is made through sand casting (casting size tolerance CT9 level), rough machining, aging treatment (to eliminate casting stress), and finishing (the inner hole is honed, and the size tolerance is IT5 level). The inner diameter of the guide sleeve is 35 mm, and the matching gap of the guide sleeve with the positioning member 3 is controlled within 0.03-0.04 mm, the length of the guide sleeve is 150 mm, and the positioning member 3 can be effectively guided in the whole movement stroke (150 mm); the inner wall is provided with a spiral lubricating groove with a width of 3 mm and a depth of 1.5 mm, the volume of the lubricating groove can reach 1.2 cm³, more lubricating medium can be stored, and the lubrication period can be prolonged (from the traditional 1 week / time to 1 month / time) The guide bracket 41 is made of the same Q235B carbon structural steel as the mounting bracket 1, and is fixedly connected with the cross bar of the mounting bracket 1 by welding (welding length≥80 mm, welding leg height 6 mm). The guide bracket 41 is provided with an assembly hole 411 (tolerance H7) with a diameter of 35 mm, the guide sleeve is press-fitted in the assembly hole 411 by interference fit (interference amount 0.01-0.02 mm), and is fixed in the circumferential direction by an M8x16 internal hexagonal screw to prevent the guide sleeve from rotating during the movement of the positioning member 3. The two ends of the guide sleeve are respectively provided with a polyurethane dustproof ring (model: 35x52x8 mm, material: PU90A) and a dust lip (material: fluorine rubber), and the double dustproof structure can effectively block the paint mist, dust and other impurities in the painting workshop from entering the inside of the guide sleeve, so as to avoid the impurities from causing the wear of the positioning member 3 and the guide sleeve.

[0098] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0099] In the description of the application, "first feature" and "second feature" can include one or more of the features.

[0100] In the description of the application, "a plurality of" means two or more.

[0101] In the description of the application, "above" or "below" the first feature of the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them.

[0102] In the description of the application, "above", "over" and "on" the first feature of the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in height.

[0103] In the description of the application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description of the application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0104] Although embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the application, and the scope of the application is defined by the claims and their equivalents.

Claims

1. A spreader positioning device, characterized in that, The mounting frame comprises a frame body and a support body, the frame body comprises a plurality of first beam bodies and a plurality of second beam bodies, the plurality of first beam bodies are sequentially connected to form a frame structure, and the plurality of second beam bodies are arranged around the frame structure and connected to the frame structure at the same end of the frame structure. The support body comprises a first sub-body, a second sub-body and a third sub-body, the third sub-body is arranged on the frame body, the second sub-body is connected between the first sub-body and the third sub-body, the cylinder body is arranged on the first sub-body, and the guide mechanism is arranged on the third sub-body. The first sub-body and the third sub-body are arranged on both sides of the frame structure in the extension direction of the second beam body. The mounting frame further comprises a flexible damping member arranged between the cylinder body and the first sub-body.

2. The spreader positioning device of claim 1, wherein, The guide mechanism comprises a guide sleeve and a guide support, the guide support is arranged on the third sub-body, and the guide sleeve is arranged on the guide support and forms the guide hole.

3. The spreader positioning device of claim 2, wherein, The guide support is provided with an assembly hole, and the guide sleeve is interference-fitted in the assembly hole.

4. The spreader positioning device of claim 3, wherein, The guide hole is provided with a lubricating groove for accommodating a lubricating medium.

5. The spreader positioning device of claim 3, wherein, The piston rod is provided with one of a threaded hole and a threaded portion, the other of the threaded hole and the threaded portion is formed on one end of the positioning member close to the piston rod, and the threaded portion is threadedly connected with the threaded hole. The mounting frame is provided with a corrosion-resistant coating on the surface.

6. The spreader positioning device of claim 3, wherein, The positioning member is provided with a guide portion at the end away from the piston rod, and the cross-sectional area of the guide portion gradually increases from the end away from the piston rod to the end close to the piston rod to form a guide surface.

7. The spreader positioning device of claim 6, wherein, The guide portion comprises a first sub-guide portion and a second sub-guide portion, the second sub-guide portion is closer to the piston rod than the first sub-guide portion, the first sub-guide portion is provided with a first sub-guide surface, the second sub-guide portion is provided with a second sub-guide surface, the first sub-guide surface and the second sub-guide surface jointly form the guide surface, and the taper of the first sub-guide surface is greater than the taper of the second sub-guide surface. ​ 8. The spreader positioning device of claim 1, wherein, ​ ​ ​ 9. The spreader positioning device of claim 1, wherein, ​ 10. The spreader positioning device of claim 9, wherein, ​

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