A gantry crane with anti-derailment function

Abstract

The present invention belongs to the technical field of cranes, and specifically discloses a gantry crane with an anti-derailment function, comprising a main beam, a lower cross beam being provided at the lower end of the main beam, and a traveling component being provided at the upper end of both the front and rear ends of the lower cross beam, and a rail being provided at the lower end of the traveling component, and a welding plate being provided at the relative outer surface of each traveling component, and a clamp seat being provided at the outer side of the welding plate, and an anti-derailment mechanism being provided inside the clamp seat, and a hydraulic push rod being provided at the relative outer end of the clamp seat. The anti-derailment mechanism is provided with a clamp leg controlled by a hydraulic cylinder, and a release thin rod is provided between the clamp legs, so as to avoid the situation that the release cannot be caused by a mechanical failure, and a brake block with an adjustable distance is provided at the lower end of the clamp leg to adapt to tracks with different rail waists; an oil pressure rail clamping mechanism is provided to provide an additional support bottom area for the equipment, and when the crane fails and loses power, a short distance repeated movement is performed by a hydraulic push rod, so as to facilitate maintenance and overhaul.

Description

Technical Field

[0001] The invention belongs to the field of cranes, and specifically discloses a gantry crane with an anti-derailment function. Background Art

[0002] Gantry crane, also known as gantry crane, is a variation of bridge crane. The metal structure of gantry crane is like a door-shaped frame, with two legs installed under the load-bearing main beam, which can walk directly on the track on the ground. Both ends of the main beam can have outward cantilever beams. It has the characteristics of high site utilization, large operating range, wide adaptability, and strong versatility. It is mainly used for outdoor cargo yards, material yards, and bulk cargo loading and unloading operations. Crane derailment refers to the accident in which the crane gnaws the rails, climbs the rails, and then the wheels completely leave the track during operation, causing the whole machine to fall. Crane derailment may cause the crane to overturn or fall, causing serious injuries or even life-threatening to nearby personnel, and the crane itself may be seriously damaged, including deformation, component rupture, etc., which requires repair or replacement, resulting in production interruption and economic losses.

[0003] In the prior art, the difference in width between the tread of the wheels of some crane trolleys and the top surface of the track is too large, resulting in a large tilt angle of the trolley, which increases the probability of the wheels climbing the track. There is no better way to clean the stones remaining on the track surface. The stones will increase the friction between the track and the crane wheels, causing increased wear of the wheels and tracks. When the crane encounters larger stones during operation, it will cause bumps and shaking, thereby affecting the stability and accuracy of operation. In addition, certain safety devices on the crane wheels, such as track clamps or limit switches, may be stuck or interfered with by stones, thereby affecting normal functions and increasing the risk of accidents. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a gantry crane with anti-derailment function to solve the problem that the width gap between the wheel tread and the top surface of the track in the prior art is large, the probability of the wheel climbing the track is increased, the stones on the track surface cannot be effectively removed, the operation stability is affected, and there are potential safety hazards in the operation of the crane.

[0005] To achieve the above purpose, a gantry crane with an anti-derailment function comprises a main beam, a lower cross beam is provided at the lower end of the main beam, traveling parts are provided at the upper ends of the front and rear ends of the lower cross beam, rails are provided at the lower ends of the traveling parts, welding plates are provided on the relative outer surfaces of each of the traveling parts, clamp seats are provided on the outer sides of the welding plates, an anti-derailment mechanism is provided inside the clamp seat, a hydraulic push rod is provided at the relative outer end of the clamp seat, a car body is provided at one end of the hydraulic push rod, and a hydraulic rail clamping mechanism is provided at the lower end of the car body.

[0006] In the above technical scheme, preferably, the anti-derail mechanism includes limit clamps fixedly installed on both sides of the upper surface of the clamp seat, a fixed plate is fixedly installed on the lower end of the clamp seat, a limit plate is fixedly installed on the upper end of the fixed plate, a slide groove is provided on the upper end of the limit plate, a support arm is fixedly installed on the lower end of the fixed plate, and a guide wheel is rotatably installed on the lower end of the support arm.

[0007] In the above technical solution, preferably, both ends of the fixed plate are rotatably installed with clamp legs, the upper ends of the two clamp legs are provided with rotating rods, a hydraulic cylinder is provided between the two rotating rods, and the two clamp legs are provided with releasing thin rods at the lower ends of the hydraulic cylinders. An inner connecting rod is rotatably installed at the middle position of the left clamp leg, and an outer connecting rod is rotatably installed at the middle position of the right clamp leg. Connecting round rods are installed through the inner and outer connecting rods, and the connecting round rods are located between the inner connecting rods and fixed with fixing parts.

[0008] In the above technical solution, preferably, a spring is provided between the fixing member and the clamp seat, the connecting round rod slides along the slide groove, and a brake block distance adjustment mechanism is provided at the lower end of each clamp leg.

[0009] In the above technical solution, preferably, the brake pad distance adjustment mechanism includes a movable box fixedly installed at the lower end of the caliper leg, two limit slide bars are installed through the movable box, and a bidirectional threaded rod is installed through the movable box between the two limit slide bars.

[0010] In the above technical solution, preferably, the hydraulic rail clamping mechanism includes a rotating seat fixedly installed at the rear end of the vehicle body, a hydraulic push rod is rotatably installed on the rotating seat, an oil tank is fixedly installed on the upper end of the vehicle body, two modulation wheels are rotatably installed on both sides of the lower surface of the rear end of the vehicle body, and one modulation wheel is rotatably installed on both sides of the lower surface of the front end of the vehicle body.

[0011] In the above technical solution, preferably, a fixing block is fixedly installed inside the vehicle body, clamping blocks are respectively provided on both sides of the fixing block, a clamping claw is fixedly installed at the lower end of each clamping block, and a hydraulic push rod is provided between the fixing block and the clamping block.

[0012] In the above technical solution, preferably, a hydraulic oil pipe is provided on the surface of the oil tank, and the hydraulic oil pipe passes through the surface of one side of the vehicle body and is connected to the surface of the fixed block.

[0013] In the above technical solution, preferably, an upper brake block and a lower brake block are slidably mounted on the upper and lower ends of the movable box respectively, and a rotating handle is fixedly mounted on the lower end of the bidirectional threaded rod passing through the movable box.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The anti-derail mechanism is provided with clamp legs controlled by hydraulic cylinders, and a release rod is provided between the clamp legs to avoid the situation where the release cannot be performed due to mechanical failure. An adjustable brake block is provided at the lower end of the clamp leg to adapt to tracks with different rail waists, thereby increasing versatility.

[0016] A hydraulic rail clamping mechanism is installed at the rear end of the equipment to provide additional support bottom area for the equipment. When the crane fails and loses power, it can be moved repeatedly over a short distance through the cooperation of the hydraulic push rod, which is convenient for operators to carry out maintenance and repairs.

[0017] Setting multiple modulation wheels can adjust the distance between the crane wheels and the track, thereby reducing the rail gnawing phenomenon. By changing the position of the modulation wheels, the stability of the crane running on the track can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a gantry crane with an anti-derailment function according to the present invention;

[0019] Figure 2 A schematic diagram of the body structure of a gantry crane with an anti-derailment function according to the present invention;

[0020] Figure 3 It is a structural schematic diagram of another viewing angle of a car body of a gantry crane with an anti-derailment function according to the present invention;

[0021] Figure 4 A schematic diagram of an anti-derailment mechanism and a hydraulic rail clamping mechanism of a gantry crane with an anti-derailment function according to the present invention;

[0022] Figure 5 A schematic structural diagram of an anti-derailment mechanism of a gantry crane with an anti-derailment function according to the present invention;

[0023] Figure 6 A cross-sectional view of an anti-derailment mechanism of a gantry crane with an anti-derailment function according to the present invention;

[0024] Figure 7 It is a schematic structural diagram of a brake pad distance adjustment mechanism of a gantry crane with an anti-derailment function according to the present invention;

[0025] Figure 8 It is a structural schematic diagram of a hydraulic rail clamping mechanism of a gantry crane with an anti-derailment function according to the present invention;

[0026] Fig. 9 A gantry crane with an anti-derailment function according to the present invention Figure 8 Enlarged view of point A in the middle.

[0027] In the figure: 1, main beam; 2, lower cross beam; 3, walking parts; 4, rails; 5, welding plate; 6, hydraulic push rod; 7, oil tank; 8, car body; 9, rotating seat; 101, clamp leg; 102, hydraulic cylinder; 103, rotating rod; 104, releasing thin rod; 105, outer connecting rod; 106, fixing part; 107, inner connecting rod; 108, spring; 109, limit plate; 110, slide groove; 111, clamp seat; 112, Connecting plate; 113, limit clamp; 114, support arm; 115, guide wheel; 116, fixed plate; 117, connecting round rod; 201, movable box; 202, upper brake block; 203, lower brake block; 204, two-way threaded rod; 205, turning handle; 206, limit slide rod; 301, fixed block; 302, clamping block; 303, clamping claw; 304, hydraulic push rod; 305, hydraulic oil pipe; 306, modulation wheel. DETAILED DESCRIPTION

[0028] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] like Figure 1-Figure 9 A gantry crane with an anti-derailment function is shown, comprising a main beam 1, a lower cross beam 2 is provided at the lower end of the main beam 1, traveling parts 3 are provided at the upper ends of the front and rear ends of the lower cross beam 2, rails 4 are provided at the lower ends of the traveling parts 3, welding plates 5 are provided on the relative outer surfaces of each traveling part 3, clamp seats 111 are provided on the outer sides of the welding plates 5, an anti-derailment mechanism is provided inside the clamp seats 111, a hydraulic push rod 6 is provided at the relative outer end of the clamp seats 111, a car body 8 is provided at one end of the hydraulic push rod 6, and a hydraulic rail clamping mechanism is provided at the lower end of the car body 8.

[0031] like Figure 5 , Figure 6 As shown, the anti-derail mechanism includes a limit clamp 113 fixedly installed on both sides of the upper surface of the clamp seat 111, a fixed plate 116 is fixedly installed at the lower end of the clamp seat 111, a limit plate 109 is fixedly installed at the upper end of the fixed plate 116, a slide groove 110 is provided at the upper end of the limit plate 109, a support arm 114 is fixedly installed at the lower end of the fixed plate 116, and a guide wheel 115 is rotatably installed at the lower end of the support arm 114.

[0032] Clamp legs 101 are rotatably installed at both ends of the fixed plate 116, and a rotating rod 103 is provided at the upper ends of the two clamp legs 101. A hydraulic cylinder 102 is provided between the two rotating rods 103, and a releasing thin rod 104 is provided at the lower end of the two clamp legs 101 and the hydraulic cylinder 102. An inner connecting rod 107 is rotatably installed at the middle position of the left clamp leg 101, and an outer connecting rod 105 is rotatably installed at the middle position of the right clamp leg 101. A connecting round rod 117 is installed through the inner connecting rod 107 and the outer connecting rod 105. The connecting round rod 117 is located between the inner connecting rod 107 and a fixing part 106 is fixedly installed. When the hydraulic cylinder 102 fails and cannot be released, the staff manually controls the releasing thin rod 104 to release the clamp legs 101 on both sides, thereby clamping and loosening the rail 4.

[0033] A spring 108 is provided between the fixing part 106 and the clamp seat 111, and the connecting round rod 117 slides along the slide groove 110. A brake block distance adjustment mechanism is provided at the lower end of each clamp leg 101. When the gantry crane is in a fixed position, the elastic force of the spring 108 keeps the fixing part 106 upward, and cooperates with the hydraulic cylinder 102 to keep the upper ends of the two clamp legs 101 unfolded. At this time, the lower ends of the two clamp legs 101 remain tightened to clamp the rail 4, thereby fixing the position of the walking part 3.

[0034] like Figure 7 As shown, the brake pad distance adjustment mechanism includes a movable box 201 fixedly installed at the lower end of the caliper leg 101, two limit slide bars 206 are installed through the movable box 201, and a bidirectional threaded rod 204 is installed between the two limit slide bars 206.

[0035] An upper brake block 202 and a lower brake block 203 are slidably installed at the upper and lower ends of the movable box 201 respectively, and a turning handle 205 is fixedly installed at the lower end of the bidirectional threaded rod 204 that passes through the movable box 201. The turning handle 205 controls the rotation of the bidirectional threaded rod 204, thereby controlling the rotation of the upper brake block 202 and the lower brake block 203 installed at the upper and lower ends of the bidirectional threaded rod 204 respectively, thereby providing a better clamping effect by changing the relative distance, thereby avoiding the occurrence of rail gnawing and derailment caused by excessive spacing between the wheels of the gantry crane and the rails 4.

[0036] like Figure 8 , Fig. 9 As shown, the hydraulic rail clamping mechanism includes a rotating seat 9 fixedly installed at the rear end of the car body 8, a hydraulic push rod 6 is rotatably installed on the rotating seat 9, an oil tank 7 is fixedly installed on the upper end of the car body 8, two modulation wheels 306 are rotatably installed on both sides of the lower surface of the rear end of the car body 8, and one modulation wheel 306 is rotatably installed on both sides of the lower surface of the front end of the car body 8. The modulation wheel 306 can improve the running stability of the walking component 3 on the rail 4, reduce shaking and swinging, and improve the safety and accuracy of the lifting operation.

[0037] A fixing block 301 is fixedly installed inside the vehicle body 8 , and clamping blocks 302 are respectively provided on both sides of the fixing block 301 . A clamping claw 303 is fixedly installed at the lower end of each clamping block 302 , and a hydraulic push rod 304 is provided between the fixing block 301 and the clamping block 302 .

[0038] A hydraulic oil pipe 305 is provided on the surface of the oil tank 7. The hydraulic oil pipe 305 passes through the surface of one side of the car body 8 and is connected to the surface of the fixed block 301. The oil tank 7 is provided to control the hydraulic push rod 304 so that the clamp 303 clamps and releases the rail 4, thereby providing better stability for the lower beam of the crane. By clamping the rail 4, the friction between the walking component 3 and the rail 4 is increased, thereby improving the stability of the crane. In addition, the supporting area can be effectively increased in the docked state to prevent accidents such as derailment and ensure the life safety of the staff.

[0039] Working principle: Before use, the equipment is fixedly installed on the relatively outer side of the traveling part 3 through the welding plate 5, the clamp seat 111 is installed according to the width of the rail 4, and the equipment is set according to the travel and stop of the gantry crane.

[0040] When the gantry crane is traveling, the device is in working state. When the gantry crane is braked and stopped, the default locking state is maintained. The anti-derail mechanism and the hydraulic rail clamping mechanism both clamp the rail 4, so that the traveling part 3 of the gantry crane can travel and stop stably on the rail 4. The guide wheel 115 installed at the lower end of the support arm 114 is rotated to move along the upper end of the rail 4 to provide support for the clamp seat 111. Two clamp legs 101 are installed in the clamp seat 111 as the clamping parts of the anti-derail mechanism. When the gantry crane is not in the traveling state, the guide wheel 115 installed at the lower end of the support arm 114 is rotated to move along the upper end of the rail 4 to provide support for the clamp seat 111. Two clamp legs 101 are installed in the clamp seat 111 as the clamping parts of the anti-derail mechanism. The hydraulic cylinder 102 at the upper end remains in an extended state, and the middle sections of the two clamp legs 101 are respectively rotatably installed with an outer connecting rod 105 and an inner connecting rod 107. A fixing piece 106 is fixedly installed at the middle section of the connecting round rod 117. A spring 108 is provided between the lower end of the fixing piece 106 and the clamp seat 111. The elasticity of the spring 108 keeps the fixing piece 106 upward. The clamp legs 101 on both sides are stressed with the upper end expanding outward and the lower end contracting. A brake block distance adjustment mechanism is provided at the lower end of each clamp leg 101, which is adjusted according to the waist length of the rail 4, thereby increasing the brake contact area and increasing the stability of the equipment. The handle 205 rotatably installed at the lower end of the movable box 201 is adjusted. A bidirectional threaded rod 204 that runs through the movable box 201 is fixedly installed at the upper end of the handle 205. The relative distance between the upper brake block 202 and the lower brake block 203 is controlled by the rotation of the bidirectional threaded rod 204, thereby improving the braking effect and the stability of the crane docking. When the gantry crane starts to move, the hydraulic cylinder 102 is controlled to retract, and the connecting round rod 117 moves up and down along the slide slot 110 to prevent deviation from affecting the rotation of the clamp leg 101. The fixing part 106 is forced to move down and compress the spring 108. At this time, the upper ends of the two clamp legs 101 open close to the lower ends, allowing the equipment to move along the rail 4.

[0041] The hydraulic push rod 6 is rotatably mounted through the connecting plate 112, and the other end of the hydraulic push rod 6 is rotatably mounted on the rotating seat 9. The lower surface of the front and rear ends of the car body 8 are symmetrically rotatably mounted with adjustment wheels 306. The modulation wheel 306 can improve the distance between the crane wheel and the rail 4, thereby reducing or eliminating the rail gnawing phenomenon, and the modulation wheel 306 can share part of the load of the crane, reducing the burden on the wheel and the rail 4. The hydraulic rail clamping mechanism can provide better stability for the gantry crane, and when the crane fails and loses power and cannot move, the hydraulic rail clamping mechanism can move the gantry crane along the rail 4 for a short distance, which is convenient for inspection and maintenance. A fixed block 301 is fixedly installed inside the car body 8, and the fixed block 301 is connected to the oil tank 7 through a hydraulic oil pipe 305. Clamping blocks 302 are installed on both sides of the fixed block 301 inside the car body 8, and each clamping block 302 is provided with a clamping claw 303 at the lower end. The clamping block 302 is pushed and retracted by the oil pressure push rods 304 installed on both sides of the fixed block 301, thereby driving the clamping claw 303 at the lower end to clamp the rail 4. When a short-distance movement is required, the clamping claw 303 is controlled to retract and clamp the rail 4, and the hydraulic push rod 6 pushes the walking part 3 to move along the rail 4. After the clamping claw 303 is controlled to be expanded, the hydraulic push rod 6 is retracted to move the car body 8 along the rail 4. Repeating the steps allows the gantry crane to move in the event of power loss, or cooperates with the anti-derailment mechanism to provide better stability for the lower beam 2, thereby reducing the possibility of derailment of the gantry crane.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A gantry crane with an anti-derailment function, comprising a main beam (1), characterized in that: A lower crossbeam (2) is provided at the lower end of the main beam (1), and a traveling component (3) is provided at the front and rear ends and the upper end of the lower crossbeam (2), and a steel rail (4) is provided at the lower end of the traveling component (3); a welding plate (5) is provided on the relative outer surface of each traveling component (3), and a clamp seat (111) is provided on the outer side surface of each welding plate (5); an anti-derailment mechanism is provided inside the clamp seat (111), and a hydraulic push rod (6) is provided at the relative outer end of the clamp seat (111), and a car body (8) is provided at one end of the hydraulic push rod (6), and a hydraulic rail clamping mechanism is provided at the lower end of the car body (8); A fixing plate (116) is fixedly mounted at the lower end of the clamp seat (111), and clamp legs (101) are rotatably mounted at both ends of the fixing plate (116). A brake pad distance adjustment mechanism is provided at the lower end of each clamp leg (101), and the brake pad distance adjustment mechanism comprises a movable box (201) fixedly mounted at the lower end of the clamp leg (101), and two limit slide bars (206) are installed through the movable box (201), and a bidirectional threaded rod (204) is installed through the movable box (201) between the two limit slide bars (206); The hydraulic rail clamping mechanism comprises a rotating seat (9) fixedly mounted on the rear end of the vehicle body (8), a hydraulic push rod (6) being rotatably mounted on the rotating seat (9), an oil tank (7) being fixedly mounted on the upper end of the vehicle body (8), two modulation wheels (306) being rotatably mounted on both sides of the lower surface of the rear end of the vehicle body (8), and one modulation wheel (306) being rotatably mounted on both sides of the lower surface of the front end of the vehicle body (8); A fixing block (301) is fixedly installed inside the vehicle body (8), clamping blocks (302) are respectively provided on both sides of the fixing block (301), a clamping claw (303) is fixedly installed at the lower end of each clamping block (302), and a hydraulic push rod (304) is provided between the fixing block (301) and the clamping block (302); A hydraulic oil pipe (305) is provided on the surface of the oil tank (7), and the hydraulic oil pipe (305) passes through the surface of one side of the vehicle body (8) and is connected to the surface of the fixing block (301); An upper brake block (202) and a lower brake block (203) are slidably mounted on the upper and lower ends of the movable box (201), respectively. The bidirectional threaded rod (204) passes through the lower end of the movable box (201) and is fixedly mounted with a rotating handle (205).

2. A gantry crane with an anti-derailment function according to claim 1, characterized in that: The anti-derailment mechanism comprises limit clamps (113) fixedly mounted on both sides of the upper surface of the clamp seat (111); a limit plate (109) is fixedly mounted on the upper end of the fixed plate (116); a slide groove (110) is provided on the upper end of the limit plate (109); a support arm (114) is fixedly mounted on the lower end of the fixed plate (116); and a guide wheel (115) is rotatably mounted on the lower end of the support arm (114).

3. A gantry crane with an anti-derailment function according to claim 2, characterized in that: A rotating rod (103) is provided at the upper end of each of the two pliers legs (101), a hydraulic cylinder (102) is provided between the two rotating rods (103), a releasing thin rod (104) is provided at the lower end of the hydraulic cylinder (102) of the two pliers legs (101), an inner connecting rod (107) is rotatably installed at the middle section of the left pliers leg (101), an outer connecting rod (105) is rotatably installed at the middle section of the right pliers leg (101), a connecting round rod (117) is installed through the inner connecting rod (107) and the outer connecting rod (105), and a fixing piece (106) is fixedly installed on the connecting round rod (117) between the inner connecting rods (107).

4. A gantry crane with an anti-derailment function according to claim 3, characterized in that: A spring (108) is provided between the fixing member (106) and the clamp seat (111), and the connecting round rod (117) slides along the sliding groove (110).

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