On-beam propelling mechanism of portal crane

Abstract

The utility model discloses an on-beam propulsion mechanism of a portal crane, which relates to the technical field of portal cranes and comprises a propulsion mechanism, the propulsion mechanism is arranged on a main beam, support frames are arranged at two ends of the main beam, a hoisting plate is arranged at the lower end of the propulsion mechanism, and an overweight locking component is arranged on the propulsion mechanism. According to the utility model, by arranging the propelling mechanism with the overweight locking assembly, when goods are overloaded, the overweight locking assembly can lock the rollers, so that the propelling mechanism cannot move, the dangerous behaviors of illegal operation of operators and overload hoisting are avoided, and the practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of gantry crane technology, specifically a beam-mounted propulsion mechanism for a gantry crane. Background Technology

[0002] Gantry cranes are a type of bridge crane, also known as portal cranes. They are mainly used for loading and unloading cargo and bulk materials in outdoor freight yards and material yards. Gantry cranes have the characteristics of high site utilization, large operating range, wide adaptability and strong versatility. They are widely used in port freight yards and are often used in the transfer and hoisting of large-scale logistics.

[0003] To improve the flexibility of lifting large items and meet the lifting and transfer needs within limited space, gantry cranes currently used for heavy-duty logistics need to be equipped with a beam-mounted propulsion mechanism. However, existing gantry cranes cannot automatically lock the propulsion mechanism when the cargo is overloaded, relying entirely on the operator's control, which leads to violations and overloading situations.

[0004] Based on this, a beam-mounted propulsion mechanism for a gantry crane is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this utility model is to provide a beam-mounted propulsion mechanism for a gantry crane to solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A beam-mounted propulsion mechanism for a gantry crane includes a propulsion mechanism mounted on a main beam. Support frames are provided at both ends of the main beam. A load-bearing plate is provided at the lower end of the propulsion mechanism. An overload locking assembly is provided on the propulsion mechanism.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0009] In one alternative: the main beam includes a beam body, which is a cuboid structure with a slot in the middle. Two first slide rails are symmetrically provided at the top of the beam body, and limiting plates are provided at both ends of the first slide rails. Two first sliding grooves are symmetrically provided on the inner side wall of the beam body, and two second sliding grooves are symmetrically provided on the outer side wall of the beam body.

[0010] In one alternative: the bottom surface of the first chute is provided with a second slide rail, and the top and bottom surfaces of the second chute are both provided with a third slide rail.

[0011] In one alternative: the propulsion mechanism includes a mounting base, a roller assembly, and a drive assembly. The mounting base is located above the beam, with L-shaped mounting plates on both sides. A connecting seat is located at the lower end of the mounting base, and the connecting seat is located in a slot in the middle of the beam.

[0012] In one alternative embodiment: the roller assembly includes a first roller, a second roller, and a third roller. The first roller is disposed between the L-shaped mounting plate and the mounting base, and the first roller is rotatably connected to both the L-shaped mounting plate and the mounting base. The second roller is rotatably connected to the L-shaped mounting plate, and the third roller is rotatably connected to the connecting base.

[0013] In one alternative: the lower end of the first roller is in frictional contact with the first slide rail, the second roller is disposed in the second slide groove, the upper and lower ends of the second roller are in frictional contact with the third slide rail, the third roller is disposed in the first slide groove, and the lower end of the third roller is in frictional contact with the second slide rail.

[0014] In one alternative: the drive assembly includes a motor, which is fixed to the outside of an L-shaped mounting plate. The output end of the motor is connected to a first roller. The first roller has a first gear on the side near the motor, and a second gear is provided between two adjacent first gears. The second gear meshes with the first gear.

[0015] In one alternative embodiment: the overload locking assembly includes a connecting rod, a movable plate, and a spring connected to the upper end of the lifting plate. The connecting rod passes through the mounting base, the connecting base, and the movable plate. The movable plate is located above the mounting base. Connecting plates are provided on both sides of the movable plate. A friction plate is provided at the bottom end of the connecting plate. The friction plate is located above the first roller. The spring is located between the mounting base and the movable plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model incorporates a propulsion mechanism with an overload locking component. When the cargo is overloaded, the overload locking component locks the rollers, preventing the propulsion mechanism from moving and avoiding dangerous overload lifting operations caused by operator violations. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of one side of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure on the other side of this utility model.

[0020] Figure 3 This is a structural schematic diagram of one side of the main beam in this utility model.

[0021] Figure 4This is a schematic diagram of the structure on the other side of the main beam in this utility model.

[0022] Figure 5 This is a schematic diagram of one side of the propulsion mechanism in this utility model.

[0023] Figure 6 This is a schematic diagram of the other side of the propulsion mechanism in this utility model.

[0024] Figure reference numerals: 100, main beam; 101, beam body; 102, first slide rail; 103, limiting plate; 104, first slide groove; 105, second slide rail; 106, second slide groove; 107, third slide rail; 200, propulsion mechanism; 201, mounting base; 202, L-shaped mounting plate; 203, connecting base; 204, first roller; 205, second roller; 206, third roller; 207, motor; 208, first gear; 209, second gear; 210, connecting rod; 211, movable plate; 212, connecting plate; 213, friction plate; 214, spring; 300, support frame; 400, lifting plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] In one embodiment, such as Figure 1 and Figure 2 As shown, a beam-mounted propulsion mechanism for a gantry crane includes a main beam 100 and a propulsion mechanism 200. The propulsion mechanism 200 is mounted on the main beam 100, and support frames 300 are provided at both ends of the main beam 100. A lifting plate 400 is provided at the lower end of the propulsion mechanism 200, and an overload locking assembly is provided on the propulsion mechanism 200. In use, goods are lifted by the lifting plate 400, and then the propulsion mechanism 200 drives the lifting plate 400 and the goods to move laterally along the main beam 100 to a designated position. When the goods are overloaded, the overload locking assembly will lock the propulsion mechanism 200, preventing the propulsion mechanism 200 from moving.

[0027] In one embodiment, such as Figure 3 and Figure 4 As shown, the main beam 100 includes a beam body 101, which is a cuboid structure with a slot in the middle. Two first slide rails 102 are symmetrically arranged at the top of the beam body 101. Limiting plates 103 are provided at both ends of the first slide rails 102. Two first sliding grooves 104 are symmetrically arranged on the inner side wall of the beam body 101, and two second sliding grooves 106 are symmetrically arranged on the outer side wall of the beam body 101. In use, the lifting plate 400 and the goods are driven to move laterally along the first slide rails 102 on the beam body 101 by the propulsion mechanism 200.

[0028] In one embodiment, such as Figure 3 and Figure 4 As shown, the bottom surface of the first slide groove 104 is provided with a second slide rail 105, the top and bottom surfaces of the second slide groove 106 are both provided with a third slide rail 107, the first slide groove 104 is provided with a third roller 206, and the second slide groove 106 is provided with a second roller 205.

[0029] In one embodiment, such as Figure 5 and Figure 6 As shown, the propulsion mechanism 200 includes a mounting base 201, a roller assembly, and a drive assembly. The mounting base 201 is located above the beam 101. L-shaped mounting plates 202 are provided on both sides of the mounting base 201. A connecting seat 203 is provided at the lower end of the mounting base 201. The connecting seat 203 is located in the slot in the middle of the beam 101. In use, the roller assembly is driven to rotate by the drive assembly, thereby moving the entire propulsion mechanism 200 along the beam 101.

[0030] In one embodiment, such as Figure 5 As shown, the roller assembly includes a first roller 204, a second roller 205, and a third roller 206. The first roller 204 is located between the L-shaped mounting plate 202 and the mounting base 201. The first roller 204 is rotatably connected to both the L-shaped mounting plate 202 and the mounting base 201. The second roller 205 is rotatably connected to the L-shaped mounting plate 202. The third roller 206 is rotatably connected to the connecting base 203. In use, the first roller 204, the second roller 205, and the third roller 206 roll along the beam 101, thereby driving the entire propulsion mechanism 200 to move laterally along the beam 101.

[0031] In one embodiment, such as Figure 1 and Figure 2 As shown, the lower end of the first roller 204 is in frictional contact with the first slide rail 102. The second roller 205 is disposed in the second slide groove 106, and both the upper and lower ends of the second roller 205 are in frictional contact with the third slide rail 107. The third roller 206 is disposed in the first slide groove 104, and the lower end of the third roller 206 is in frictional contact with the second slide rail 105. In use, the first roller 204 is made to roll along the first slide rail 102, the second roller 205 is made to roll along the third slide rail 107, and the third roller 206 is made to roll along the second slide rail 105 by the drive assembly.

[0032] In one embodiment, such as Figure 6As shown, the drive assembly includes a motor 207, which is fixed to the outside of the L-shaped mounting plate 202. The output end of the motor 207 is connected to the first roller 204. The first roller 204 is provided with a first gear 208 on the side near the motor 207. A second gear 209 is provided between two adjacent first gears 208. The second gear 209 meshes with the first gear 208. In use, the motor 207 drives one of the first rollers 204 and the first gear 208 to rotate. Then, the second gear 209 drives the adjacent first rollers 204 to rotate simultaneously, thereby driving the entire propulsion mechanism 200 to move along the beam 101.

[0033] In one embodiment, such as Figure 5 and Figure 6 As shown, the overload locking assembly includes a connecting rod 210, a movable plate 211, and a spring 214 connected to the upper end of the lifting plate 400. The connecting rod 210 passes through the mounting base 201, the connecting base 203, and the movable plate 211. The movable plate 211 is located above the mounting base 201. Connecting plates 212 are provided on both sides of the movable plate 211. A friction plate 213 is provided at the bottom of the connecting plate 212. The friction plate 213 is located above the first roller 204. The spring 214 is located between the mounting base 201 and the movable plate 211. When the load on the lifting plate 400 is overloaded, the movable plate 211 moves downward under the action of gravity, causing the friction plate 213 to squeeze the first roller 204, thereby achieving the effect of locking the propulsion mechanism 200.

[0034] The above embodiment discloses a beam-mounted propulsion mechanism for a gantry crane. In use, goods are hoisted by the lifting plate 400, and then the roller group is driven by the motor 207 to rotate and move the propulsion mechanism, thereby moving the lifting plate 400 and the goods laterally along the main beam 100 to a designated position. When the goods are overweight, the movable plate 211 moves downward under the action of gravity, causing the friction plate 213 to squeeze the first roller 204, thereby achieving the effect of locking the propulsion mechanism 200.

[0035] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A beam-mounted propulsion mechanism for a gantry crane, characterized in that, It includes a propulsion mechanism (200), which is mounted on the main beam (100). The main beam (100) has support frames (300) at both ends. The lower end of the propulsion mechanism (200) is provided with a lifting plate (400). The propulsion mechanism (200) is provided with an overload locking assembly.

2. The beam-mounted propulsion mechanism of a gantry crane according to claim 1, characterized in that, The main beam (100) includes a beam body (101), which is a cuboid structure with a slot in the middle. Two first slide rails (102) are symmetrically provided at the top of the beam body (101), and limiting plates (103) are provided at both ends of the first slide rails (102). Two first sliding grooves (104) are symmetrically provided on the inner side wall of the beam body (101), and two second sliding grooves (106) are symmetrically provided on the outer side wall of the beam body (101).

3. The beam-mounted propulsion mechanism of a gantry crane according to claim 2, characterized in that, The bottom surface of the first slide groove (104) is provided with a second slide rail (105), and the top and bottom surfaces of the second slide groove (106) are both provided with a third slide rail (107).

4. The beam-mounted propulsion mechanism of a gantry crane according to claim 1, characterized in that, The propulsion mechanism (200) includes a mounting base (201), a roller assembly and a drive assembly. The mounting base (201) is located above the beam (101). L-shaped mounting plates (202) are provided on both sides of the mounting base (201). A connecting seat (203) is provided at the lower end of the mounting base (201). The connecting seat (203) is located in the slot in the middle of the beam (101).

5. The beam-mounted propulsion mechanism of a gantry crane according to claim 4, characterized in that, The roller assembly includes a first roller (204), a second roller (205), and a third roller (206). The first roller (204) is located between the L-shaped mounting plate (202) and the mounting base (201). The first roller (204) is rotatably connected to both the L-shaped mounting plate (202) and the mounting base (201). The second roller (205) is rotatably connected to the L-shaped mounting plate (202). The third roller (206) is rotatably connected to the connecting base (203).

6. The beam-mounted propulsion mechanism of a gantry crane according to claim 5, characterized in that, The lower end of the first roller (204) is in frictional contact with the first slide rail (102), the second roller (205) is located in the second slide groove (106), the upper and lower ends of the second roller (205) are in frictional contact with the third slide rail (107), the third roller (206) is located in the first slide groove (104), and the lower end of the third roller (206) is in frictional contact with the second slide rail (105).

7. The beam-mounted propulsion mechanism of a gantry crane according to claim 4, characterized in that, The drive assembly includes a motor (207), which is fixed on the outside of an L-shaped mounting plate (202). The output end of the motor (207) is connected to a first roller (204). The first roller (204) has a first gear (208) on the side of the motor (207). A second gear (209) is provided between two adjacent first gears (208), and the second gear (209) meshes with the first gear (208).

8. The beam-mounted propulsion mechanism of a gantry crane according to claim 1, characterized in that, The overload locking assembly includes a connecting rod (210), a movable plate (211), and a spring (214) connected to the upper end of the lifting plate (400). The connecting rod (210) passes through the mounting base (201), the connecting base (203), and the movable plate (211). The movable plate (211) is located above the mounting base (201). Connecting plates (212) are provided on both sides of the movable plate (211). A friction plate (213) is provided at the bottom of the connecting plate (212). The friction plate (213) is located above the first roller (204). The spring (214) is located between the mounting base (201) and the movable plate (211).

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