Explosion-proof pneumatic hoist portal crane

Abstract

This utility model discloses an explosion-proof pneumatic hoist gantry crane, relating to the field of crane technology. It includes two bases, with an anti-sway component movably connected to the middle of the connecting plate. Lubrication and cleaning components are fixedly installed on the front and rear sides of both bases. This explosion-proof pneumatic hoist gantry crane, through its anti-sway component, utilizes a rigid limiting structure of "slide rail + slide rod + roller" to convert the lateral swaying of the hook into the vertical sliding of the slide rod, directly suppressing swaying from a mechanical principle, thus demonstrating strong practicality. The lubrication and cleaning components not only enable the movement of the gantry crane using the moving wheels and guide plate, but also achieve an integrated "lubrication + cleaning" function through the combination of carbon fiber composite sponge and oil box. The detachable base plate and spring positioning structure ensure continuous lubrication supply and facilitate maintenance and replacement, further enhancing its practicality.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to an explosion-proof pneumatic hoist gantry crane. Background Technology

[0002] Currently, with the rapid development of the national economy, pneumatic hoist gantry cranes, as ideal and safe explosion-proof devices, are widely used in fields such as petrochemicals, coal mining, shipbuilding, and offshore oil drilling platforms. In existing technologies, most cranes are electrically driven; both the trolley traveling mechanism and the hoisting mechanism rely on electricity as their power source. Electric hoist gantry cranes not only have large metal structures, but also suffer from electrical sparks and static electricity, easily generating dangerous factors such as static sparks, overheating, and short circuits. Their use in flammable and explosive environments poses significant safety hazards. Therefore, an explosion-proof pneumatic hoist gantry crane is needed.

[0003] Chinese patent document CN220976370U discloses a pneumatic explosion-proof gantry crane, which has a pneumatic hoist trolley mounted on the main beam of the gantry. The pneumatic hoist trolley consists of a trolley frame, a drive shaft, trolley drive wheels, and trolley driven wheels. The trolley frame contains trolley drive wheels and trolley driven wheels that can move along the main beam of the gantry, and the trolley drive wheels and trolley driven wheels are connected by the drive shaft. A large trolley traveling mechanism is installed at the bottom of each of the two legs of the gantry. This crane has low operating costs.

[0004] The existing technology has the following problems:

[0005] I. When lifting objects, existing pneumatic hoist trolleys are prone to hook swaying due to the unstable center of gravity of the object or its irregular shape. If the swaying amplitude is large, it requires a long period of manual control and adjustment, which reduces the efficiency of operation.

[0006] Second, existing cranes are inconvenient to move, cannot adapt to complex working conditions, and have a limited range of applications. Utility Model Content

[0007] This utility model provides an explosion-proof pneumatic hoist gantry crane to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0009] An explosion-proof pneumatic hoist gantry crane includes two bases. Support columns are fixedly installed at the front and rear of the upper ends of both bases. A crossbeam is fixedly installed at the upper end of each support column. A sliding rail is fixedly installed at the lower end of each crossbeam. A pneumatic hoist trolley is slidably connected to the outer side of the sliding rail. A connecting plate is fixedly connected to the output end of the pneumatic hoist trolley. A hook is fixedly installed at the lower end of the connecting plate. An anti-sway component is movably connected to the middle of the connecting plate. Lubrication and cleaning components are fixedly installed on the front and rear sides of both bases.

[0010] The anti-sway assembly includes two slide rails, the upper and lower ends of the two slide rails are fixedly connected to the opposite sides of the crossbeam and the two bases, and slide rods are slidably connected to the inner walls of the two slide rails. A through hole for matching slide rods is provided through the middle left side of the connecting plate.

[0011] The lubrication and cleaning assembly includes a fixing frame, with one side of the fixing frame near the support column fixedly connected to one side of the base. An oil box is fixedly installed on the side of the fixing frame away from the support column. A base plate is detachably connected to the bottom of the oil box. Two discharge slots are opened through the bottom of the inner wall of the oil box and the top of the base plate. A carbon fiber composite sponge is bonded to the lower end of the base plate.

[0012] Preferably, each of the left and right ends of the slide rod is fixedly mounted with a mounting bracket, and the inner walls of the two mounting brackets are rotatably connected with rollers of two matching slide rails.

[0013] Preferably, a guide slide is fixedly installed at the lower center of each of the two bases, and a graphene-coated guide rail is slidably connected to the outer side of each of the two guide slides. The bottom of the carbon fiber composite sponge matches the shape of the guide rail. Moving wheels are rotatably connected to the front and rear positions of the left and right lower parts of the two bases, and the outer walls of the eight moving wheels are movably connected to the left and right lower parts of the two guide rails.

[0014] Preferably, an annular slot is provided at the lower edge of the oil box, located outside the discharge trough, and a positioning sleeve with a matching slot is fixedly installed at the upper edge of the base plate.

[0015] Preferably, the upper end of the oil box is provided with a feed port, and a cover is plugged into the top of the outer wall of the feed port.

[0016] Preferably, sleeves are rotatably connected to the middle of the left and right sides of the oil box, sliders are slidably connected to the inner walls of the two sleeves, pull plates are fixedly installed on the opposite sides of the two sliders, positioning rods are fixedly installed on the bottom of the opposite sides of the two pull plates, fixing holes for matching positioning rods are opened on the left and right sides of the base plate, springs are fixedly installed on the opposite sides of the two sliders, and the opposite ends of the two springs are fixedly connected to the inner walls of the two sleeves.

[0017] Preferably, a reinforcing plate is fixedly installed on the side of each of the four adjacent pillars that is far apart from each other. The lower ends of the four reinforcing plates are fixedly connected to the front and rear parts of the upper ends of the two bases. Mounting seats for fixing rail clamps are fixedly installed in the middle of the left and right sides of the two bases.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This utility model provides an explosion-proof pneumatic hoist gantry crane, which, through the cooperation between the slide rail, slide rod, mounting frame and roller, can use the rigid limiting structure of "slide rail + slide rod + roller" to convert the lateral sway of the hook into the vertical sliding of the slide rod, directly suppressing the sway from a mechanical principle, and is highly practical.

[0020] 2. This utility model provides an explosion-proof pneumatic hoist gantry crane. Through its lubrication and cleaning components, it not only enables the movement of the gantry crane using the moving wheels and guide slide plate, but also achieves an integrated "lubrication + cleaning" function using a combination of carbon fiber composite sponge and oil box. The detachable base plate and spring positioning structure ensure a continuous supply of lubricating oil while facilitating maintenance and replacement, making it highly practical. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the anti-sway component structure of this utility model;

[0024] Figure 4 This is a schematic diagram (I) of the lubrication and cleaning component structure of this utility model;

[0025] Figure 5 This is a partially enlarged schematic diagram of point A in this utility model;

[0026] Figure 6 This is a schematic diagram (II) of the lubrication and cleaning component structure of this utility model.

[0027] In the diagram: 1. Base; 2. Anti-sway assembly; 3. Lubrication and cleaning assembly; 4. Support column; 5. Crossbeam; 6. Sliding rail; 7. Pneumatic hoist trolley; 8. Connecting plate; 9. Hook; 10. Reinforcing plate; 11. Mounting seat; 21. Slide rail; 22. Slide rod; 23. Mounting bracket; 24. Roller; 31. Fixing bracket; 32. Oil box; 33. Base plate; 34. Discharge chute; 35. Carbon fiber composite sponge; 36. Guide slide plate; 37. Guide rail; 38. Moving wheel; 39. Positioning sleeve; 310. Cover; 311. Sleeve; 312. Slider; 313. Pull plate; 314. Positioning rod; 315. Fixing hole; 316. Spring. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0029] like Figures 1-6 As shown, an explosion-proof pneumatic hoist gantry crane includes two bases 1. Support columns 4 are fixedly installed at the front and rear of the upper ends of the two bases 1. A crossbeam 5 is fixedly installed at the upper end of the two support columns 4. A sliding rail 6 is fixedly installed at the lower end of the crossbeam 5. A pneumatic hoist trolley 7 is slidably connected to the outer side of the sliding rail 6. A connecting plate 8 is fixedly connected to the output end of the pneumatic hoist trolley 7. A hook 9 is fixedly installed at the lower end of the connecting plate 8. An anti-sway component 2 is movably connected to the middle of the connecting plate 8. Lubrication and cleaning components 3 are fixedly installed on the front and rear sides of the two bases 1.

[0030] The anti-sway assembly 2 includes two slide rails 21. The upper and lower ends of the two slide rails 21 are fixedly connected to the opposite sides of the crossbeam 5 and the two bases 1. The inner walls of the two slide rails 21 are slidably connected with slide rods 22. A through hole for matching slide rods 22 is opened through the middle of the left side of the connecting plate 8.

[0031] The lubrication and cleaning component 3 includes a fixing frame 31. The side of the fixing frame 31 closest to the support column 4 is fixedly connected to one side of the base 1. An oil box 32 is fixedly installed on the side of the fixing frame 31 away from the support column 4. A base plate 33 is detachably connected to the bottom of the oil box 32. Two discharge slots 34 are opened through the bottom of the inner wall of the oil box 32 and the upper end of the base plate 33. A carbon fiber composite sponge 35 is bonded to the lower end of the base plate 33.

[0032] It should be noted that the outer surfaces of the oil box 32, sleeve 311, positioning rod 314, and spring 316 are all coated with ETFE powder. Furthermore, the lubricating oil inside the oil box 32 is calcium-based lubricating oil.

[0033] The anti-sway component 2 utilizes a rigid limiting structure of "slide rail 21 + slide rod 22 + roller 24" to convert the lateral swaying of the hook 9 into the vertical sliding of the slide rod 22, directly suppressing swaying from a mechanical perspective, thus offering strong practicality. The lubrication and cleaning component 3 not only enables the movement of the gantry crane using the moving wheels 38 and guide slide plate 36, but also achieves an integrated "lubrication + cleaning" function through the combination of carbon fiber composite sponge 35 and oil box 32. The detachable base plate 33 and spring 316 positioning structure ensure both continuous lubrication supply and convenient maintenance and replacement, further enhancing its practicality.

[0034] like Figure 3 As shown, mounting brackets 23 are fixedly installed on both the left and right ends of the slide rod 22, and rollers 24 of two matching slide rails 21 are rotatably connected to the inner walls of the two mounting brackets 23.

[0035] Roller 24 converts sliding friction into rolling friction, reducing resistance, making the anti-sway component more responsive, and reducing wear.

[0036] like Figure 4 As shown, guide slides 36 are fixedly installed at the lower center of both bases 1. Graphene-coated guide rails 37 are slidably connected to the outer sides of both guide slides 36. The bottom of the carbon fiber composite sponge 35 matches the shape of the guide rails 37. Moving wheels 38 are rotatably connected to the front and rear positions of the left and right lower parts of both bases 1. The outer walls of the eight moving wheels 38 are movably connected to the left and right lower parts of the two guide rails 37.

[0037] A guide slide plate 36 is provided at the lower end of the base 1, which slides in connection with the graphene-coated guide rail 37, utilizing the low-friction properties of graphene to improve the smoothness of movement. The moving wheels 38 support the base 1 and, together with the guide slide plate 36, achieve stable movement. This allows the entire crane to move on the guide rail 37, making it widely applicable. The bottom of the carbon fiber composite sponge 35 matches the shape of the guide rail 37, simultaneously wiping the surface of the guide rail during movement to remove impurities and apply grease.

[0038] like Figure 5 As shown, an annular slot is provided at the lower edge of the oil box 32, located outside the discharge trough 34, and a positioning sleeve 39 with a matching slot is fixedly installed at the upper edge of the base plate 33.

[0039] The positioning sleeve 39 on the top of the base plate 33 is aligned with the slot at the bottom of the oil box 32, which enables the base plate 33 and the carbon fiber composite sponge 35 to be quickly positioned, facilitating subsequent disassembly and assembly.

[0040] like Figure 5 As shown, the upper end of the oil box 32 is provided with a feed port, and a cover 310 is plugged into the top of the outer wall of the feed port.

[0041] The removable cover 310 supports regular oil replenishment, ensuring the continuous operation of the lubrication system.

[0042] like Figure 5 and Figure 6 As shown, sleeves 311 are rotatably connected to the middle of the left and right sides of the oil box 32. Slider 312 are slidably connected to the inner walls of the two sleeves 311. Pull plates 313 are fixedly installed on the opposite sides of the two sliders 312. Positioning rods 314 are fixedly installed on the bottom of the opposite sides of the two pull plates 313. Fixing holes 315 for matching positioning rods 314 are opened on the left and right sides of the base plate 33. Springs 316 are fixedly installed on the opposite sides of the two sliders 312. The opposite ends of the two springs 316 are fixedly connected to the inner walls of the two sleeves 311.

[0043] Pulling the pull plate 313 compresses the spring 316, disengaging the positioning rod 314 from the fixing hole 315, allowing the base plate 33 to be removed. Releasing the pull plate 313 resets the spring 316, and the positioning rod 314 automatically inserts into the hole and locks in place.

[0044] like Figure 1 As shown, a reinforcing plate 10 is fixedly installed on the side of each of the four adjacent pillars 4 that is far apart from each other. The lower ends of the four reinforcing plates 10 are fixedly connected to the front and rear parts of the upper ends of the two bases 1. Mounting seats 11 for fixing rail clamps are fixedly installed in the middle of the left and right sides of the two bases 1.

[0045] The reinforcement plate 10 enhances structural strength, and the rail clamps meet the anti-slip requirements of industrial sites and comply with safety regulations.

[0046] The working principle of this utility model is as follows: During use, the pneumatic hoist 7 moves along the sliding track 6 to the target position, and the hook 9 descends to grab the heavy object. During the lifting process, the connecting plate 8 rises and falls with the hook 9, and the sliding rod 22 slides synchronously along the sliding rail 21, limiting the lateral sway of the connecting plate 8 and ensuring stable lifting of the heavy object. When the heavy object swings due to inertia or external force, the sliding rod 22 slides within the sliding rail 21, converting the lateral force into vertical displacement. The rolling friction of the roller 24 consumes the swaying energy and suppresses the sway amplitude. When the crane moves, the lubricating oil in the oil box 32 permeates to the carbon fiber composite sponge 35 through the discharge trough 34. The sponge contacts the guide rail 37 and applies lubricating oil before the moving wheel 38 rolls, while simultaneously absorbing dust and impurities on the surface of the guide rail 37, achieving simultaneous lubrication and cleaning. Among these measures, pneumatic drive avoids electric sparks, the conductive coating of the guide rail 37 eliminates static electricity, and the rail clamp (installed on the mounting base 11) fixes the crane. Multiple measures ensure safe operation in flammable and explosive environments.

[0047] When the carbon fiber composite sponge 35 needs to be replaced or cleaned, pull the pull plate 313 to compress the spring 316, and the positioning rod 314 will disengage from the fixing hole 315 to remove the base plate 33 and the carbon fiber composite sponge 35.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof pneumatic hoist gantry crane, comprising two bases (1), with support columns (4) fixedly installed at the front and rear of the upper ends of the two bases (1), and crossbeams (5) fixedly installed at the upper ends of the two support columns (4), with sliding rails (6) fixedly installed at the lower ends of the crossbeams (5), and a pneumatic hoist trolley (7) slidably connected to the outer side of the sliding rails (6), characterized in that: The output end of the pneumatic hoist (7) is fixedly connected to a connecting plate (8), the lower end of the connecting plate (8) is fixedly installed with a hook (9), the middle part of the connecting plate (8) is movably connected with an anti-sway component (2), and the front and rear sides of the two bases (1) are fixedly installed with lubrication and cleaning components (3). The anti-sway assembly (2) includes two slide rails (21). The upper and lower ends of the two slide rails (21) are fixedly connected to the opposite sides of the crossbeam (5) and the two bases (1). The inner walls of the two slide rails (21) are slidably connected with slide rods (22). The middle left side of the connecting plate (8) is provided with a through hole for matching slide rods (22). The lubrication and cleaning component (3) includes a fixing frame (31), the side of the fixing frame (31) near the support column (4) is fixedly connected to one side of the base (1), and an oil box (32) is fixedly installed on the side of the fixing frame (31) away from the support column (4). A base plate (33) is detachably connected to the bottom of the oil box (32). Two discharge slots (34) are opened through the bottom of the inner wall of the oil box (32) and the upper end of the base plate (33). A carbon fiber composite sponge (35) is bonded to the lower end of the base plate (33).

2. The explosion-proof pneumatic hoist gantry crane according to claim 1, characterized in that: The left and right ends of the slide rod (22) are fixedly installed with mounting brackets (23), and the inner walls of the two mounting brackets (23) are rotatably connected with rollers (24) of two matching slide rails (21).

3. The explosion-proof pneumatic hoist gantry crane according to claim 1, characterized in that: Guide slides (36) are fixedly installed at the lower middle of the two bases (1). Graphene-coated guide rails (37) are slidably connected to the outer sides of the two guide slides (36). The bottom of the carbon fiber composite sponge (35) matches the shape of the guide rails (37). Moving wheels (38) are rotatably connected to the front and rear positions of the left and right lower parts of the two bases (1). The outer walls of the eight moving wheels (38) are movably connected to the left and right lower parts of the two guide rails (37).

4. The explosion-proof pneumatic hoist gantry crane according to claim 1, characterized in that: An annular slot is provided at the lower edge of the oil box (32) outside the discharge trough (34), and a positioning sleeve (39) with a matching slot is fixedly installed at the upper edge of the base plate (33).

5. The explosion-proof pneumatic hoist gantry crane according to claim 1, characterized in that: The oil box (32) is provided with a feed inlet at the upper end, and a cover (310) is plugged into the top of the outer wall of the feed inlet.

6. The explosion-proof pneumatic hoist gantry crane according to claim 1, characterized in that: The oil box (32) is rotatably connected to the middle of the left and right sides of the oil box (32). The inner walls of the two sleeves (311) are slidably connected to sliders (312). The sides of the two sliders (312) that are far apart from each other are fixedly installed with pull plates (313). The bottom of the opposite sides of the two pull plates (313) are fixedly installed with positioning rods (314). The left and right sides of the base plate (33) are provided with fixing holes (315) for matching positioning rods (314). The opposite sides of the two sliders (312) are fixedly installed with springs (316). The opposite ends of the two springs (316) are fixedly connected to the inner walls of the two sleeves (311).

7. The explosion-proof pneumatic hoist gantry crane according to claim 1, characterized in that: Each of the four adjacent support columns (4) is fixedly installed with a reinforcing plate (10) on the side away from each other. The lower ends of the four reinforcing plates (10) are fixedly connected to the front and rear ends of the upper ends of the two bases (1). Mounting seats (11) for fixing rail clamps are fixedly installed in the middle of the left and right sides of the two bases (1).

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