A small gantry crane

Abstract

This utility model relates to the field of gantry crane technology and discloses a small gantry crane, including: a crossbeam, a lifting motor installed at the bottom of the crossbeam, a lifting frame installed at the bottom of the lifting motor, and a disassembly assembly between the lifting motor and the lifting frame; a buffer assembly, the buffer assembly being located on both sides of the lifting frame and used to buffer and protect the sides of the lifting frame, the buffer assembly including mounting plates fixedly installed on both sides of the lifting frame and a contact plate fixedly installed on one side of the mounting plates. This utility model, through the setting of the buffer assembly, can absorb the impact energy generated by collision, thereby protecting the structure of the lifting frame and the mounting frame from damage, reducing the transmission of impact loads, reducing wear on the gantry crane, extending the service life of the lifting frame and the mounting frame, and reducing the maintenance cost of the lifting frame. At the same time, the lifting frame can be adjusted to a suitable position for lifting different goods.

Description

Technical Field

[0001] This utility model relates to the field of gantry crane technology, specifically a small gantry crane. Background Technology

[0002] Miniature gantry cranes are lightweight lifting equipment widely used in factories, warehouses, assembly workshops, and other places. Compared with large gantry cranes, they are characterized by their compact structure, light weight, and convenient installation, making them especially suitable for lifting and moving lighter goods.

[0003] However, existing small gantry cranes use a lifting frame to lift and transport goods. During the lifting and installation process, the lifting frame and the mounting frame may collide. The lifting frame and the mounting frame are unable to absorb the impact energy generated by the collision and cannot reduce the impact load. As a result, the lifting frame and the mounting frame are damaged by the collision, causing wear and tear on the gantry crane, reducing the service life of the lifting frame and the mounting frame, and increasing the maintenance cost of the lifting frame. Utility Model Content

[0004] The purpose of this utility model is to provide a small gantry crane that solves the problem in the prior art where, during the lifting and installation process, the lifting frame and the mounting frame collide, and the lifting frame and the mounting frame are unable to absorb the impact energy generated by the collision, thus failing to reduce the impact load and reducing the service life of the lifting frame and the mounting frame.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A small gantry crane includes:

[0007] A crossbeam, a lifting motor is installed at the bottom of the crossbeam, a lifting frame is installed at the bottom of the lifting motor, and a disassembly assembly is provided between the lifting motor and the lifting frame;

[0008] A buffer assembly is located on both sides of the lifting frame and is used to buffer and protect both sides of the lifting frame. The buffer assembly includes a mounting plate fixedly installed on both sides of the lifting frame and a contact plate fixedly installed on one side of the mounting plate. An extension assembly for adjusting the buffer plate is provided between the mounting plate and the buffer plate.

[0009] Preferably, the extension assembly includes a plurality of hinge seats two fixedly installed on one side of the buffer plate and two slide grooves opened on one side of the mounting plate. Two hinge seats one are slidably installed inside each of the two slide grooves. A linkage rod is hinged between the plurality of hinge seats one and the plurality of hinge seats two. A guide assembly for guiding the hinge seats one is provided inside each of the two slide grooves.

[0010] Preferably, the guide assembly includes a guide rod fixedly installed inside the slide groove and two compression springs sleeved on the guide rod. A limiting plate is fixedly installed on the guide rod, and the limiting plate is located between the two compression springs. The hinge seat is slidably installed on the guide rod, and the guide rod is located on one side of the compression springs.

[0011] Preferably, mounting brackets are fixedly installed on both sides of the crossbeam, and a base plate is fixedly installed on the bottom of the two mounting brackets. A drive assembly for driving the base plate to move is provided on the base plate.

[0012] Preferably, the drive assembly includes a dual-axis motor mounted on the top of the base plate and a roller hub mounted on the bottom of the base plate. Synchronous pulleys are mounted on one side of both the roller hub and the main shaft of the dual-axis motor, and a synchronous belt is wound between the two synchronous pulleys.

[0013] Preferably, the disassembly and assembly assembly includes a hook installed at the bottom of the lifting motor and multiple stabilizing plates installed on the outer wall of the lifting frame. Multiple limiting rods are fixed to one side of the lifting frame, and the stabilizing plates are inserted into the limiting rods. Multiple fixing bolts are screwed to one side of the stabilizing plates, and one side of the multiple fixing bolts passes through the stabilizing plates and extends into the interior of the lifting frame. A steel cable is installed on the top of the multiple stabilizing plates, and the steel cable is installed on the hook. An adjustment assembly for driving the lifting motor to move is provided between the crossbeam and the lifting motor.

[0014] Preferably, the adjustment assembly includes a guide groove formed on the top of the crossbeam and an adjustment seat slidably mounted on the crossbeam. The top of the adjustment seat has an opening groove, and a drive roller is rotatably mounted inside the opening groove. A drive motor is mounted on one side of the adjustment seat, and the main shaft of the drive motor passes through the adjustment seat and is connected to the drive roller. The bottom of the drive roller is located inside the guide groove.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0016] This invention, through the inclusion of a buffer component, absorbs the impact energy generated during the lifting and installation process when collisions may occur between the lifting frame and the mounting frame. This reduces the impact load and protects the structure of the lifting frame and mounting frame from damage. It also reduces the transmission of impact loads, decreases wear on the gantry crane, extends the service life of the lifting frame and mounting frame, and lowers the maintenance cost of the lifting frame. Furthermore, the lifting frame can be adjusted in position during the lifting process to accommodate different types of goods. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the disassembly and assembly components of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the drive component of this utility model;

[0020] Figure 4 This is a structural diagram of the buffer component of this utility model when disassembled;

[0021] Figure 5 This is a schematic diagram of the structure of the lifting frame of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the adjustment component of this utility model.

[0023] The components include: 1. Crossbeam; 2. Lifting motor; 3. Buffer assembly; 4. Adjustment assembly; 5. Lifting frame; 6. Mounting frame; 7. Base plate; 8. Synchronous belt; 9. Stabilizing plate; 10. Hook; 11. Limiting rod; 12. Fixing bolt; 13. Dual-shaft motor; 14. Synchronous pulley.

[0024] 31. Mounting plate; 32. Buffer plate; 33. Contact plate; 34. Hinge seat one; 35. Hinge seat two; 36. Linkage rod; 37. Guide rod; 38. Limiting plate; 39. Compression spring; 310. Slide groove;

[0025] 41. Adjusting seat; 42. Drive roller; 43. Drive motor; 44. Guide groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please refer to Figure 1 A small gantry crane includes: a crossbeam 1, a lifting motor 2 installed at the bottom of the crossbeam 1, a lifting frame 5 installed at the bottom of the lifting motor 2, and a disassembly assembly provided between the lifting motor 2 and the lifting frame 5.

[0028] Please refer to Figure 4The buffer assembly 3 is located on both sides of the lifting frame 5 and is used to buffer and protect both sides of the lifting frame 5. The buffer assembly 3 includes a mounting plate 31 fixedly installed on both sides of the lifting frame 5 and a contact plate 33 fixedly installed on one side of the mounting plate 31. An extension assembly for adjusting the buffer plate 32 is provided between the mounting plate 31 and the buffer plate 32. The extension assembly includes multiple hinge seats 35 fixedly installed on one side of the buffer plate 32 and two slide grooves 310 opened on one side of the mounting plate 31. Two hinge seats 34 are slidably installed inside the two slide grooves 310. A linkage rod 36 is hinged between the multiple hinge seats 34 and the multiple hinge seats 35. A guide assembly for guiding the hinge seats 34 is provided inside the two slide grooves 310.

[0029] When the two lifting frames 5 collide with the two mounting frames 6, the contact plate 33 first contacts the inner wall of the two mounting frames 6, and the resulting impact force squeezes the contact plate 33 and the buffer plate 32. Then, the buffer plate 32 squeezes the linkage rod 36 at the same time, so that the linkage rod 36 is adjusted through the second hinge seat 35 and the first hinge seat 34 to complete the movement of the contact plate 33. Moreover, as the second hinge seat 35 is squeezed, the first hinge seat 34 slides on the guide rod 37 and squeezes the compression spring 39. Then, the compression spring 39 releases and buffers the impact force on the contact plate 33, thereby reducing the impact damage to the contact plate 33 and providing buffer protection for the contact plate 33, avoiding damage to the inner wall of the mounting frame 6, and improving the service life of the lifting frame 5. At the same time, it prevents the items on the lifting frame 5 from falling due to collision, so as to improve the stability of the items when lifting.

[0030] Furthermore, such as Figure 4 As shown, the guide assembly includes a guide rod 37 fixedly installed inside the slide groove 310 and two compression springs 39 sleeved on the guide rod 37. A limiting plate 38 is fixedly installed on the guide rod 37, and the limiting plate 38 is located between the two compression springs 39. A hinge seat 34 is slidably installed on the guide rod 37, and the guide rod 37 is located on one side of the compression springs 39. Based on this, when the two hinge seats 34 slide on the guide rod 37, they can compress the two compression springs 39, thereby buffering and releasing the collision damage caused by the contact plate 33 and the mounting bracket 6, thus reducing the collision damage to the contact plate 33. At the same time, the limiting plate 38 can limit the two hinge seats 34, preventing the two compression springs 39 from being damaged due to excessive movement distance of the two hinge seats 34, thereby improving the service life of the two compression springs 39.

[0031] Furthermore, such as Figure 1 and Figure 3As shown, mounting brackets 6 are fixedly installed on both sides of the crossbeam 1, and base plates 7 are fixedly installed on the bottom of the two mounting brackets 6. A drive assembly for moving the base plate 7 is provided on the base plate 7. The drive assembly includes a dual-axis motor 13 installed on the top of the base plate 7 and a roller hub installed on the bottom of the base plate 7. Synchronous pulleys 14 are installed on one side of the roller hub and the main shaft of the dual-axis motor 13, and a synchronous belt 8 is wound between the two synchronous pulleys 14. Based on this, when it is necessary to move the base plate 7 as a whole, the dual-axis motor 13 drives the two synchronous pulleys 14 to rotate, so that the two synchronous pulleys 14 mesh with the synchronous belt 8 while rotating, thereby realizing the rotation of the roller hub. This allows the base plate 7 to move with the rotation of the roller hub, so that the gantry crane can lift items in different positions and improve the flexibility of the gantry crane during use.

[0032] Furthermore, such as Figure 1 , Figure 2 and Figure 5 As shown, the disassembly and assembly components include a hook 10 installed at the bottom of the lifting motor 2 and multiple stabilizing plates 9 installed on the outer wall of the lifting frame 5. Multiple limiting rods 11 are fixed to one side of the lifting frame 5, and the stabilizing plates 9 are inserted into the limiting rods 11. Multiple fixing bolts 12 are screwed onto one side of the stabilizing plates 9, and one side of each fixing bolt 12 penetrates the stabilizing plate 9 and extends into the interior of the lifting frame 5. A steel cable is installed on the top of the multiple stabilizing plates 9, and the steel cable is installed on the hook 10. An adjustment assembly 4 for driving the lifting motor 2 to move is provided between the crossbeam 1 and the lifting motor 2. Therefore, when it is necessary to remove the lifting frame 5 from the bottom of the hook 10, the operator first removes the two limiting rods 10. 1. Insert the cable into the interior of the stabilizing plate 9 to create a limiting position between the stabilizing plate 9 and the lifting frame 5. Then, the operator continues to rotate the fixing bolt 12 so that the fixing bolt 12 is screwed into the interior of the stabilizing plate 9. One end of the fixing bolt 12 passes through the stabilizing plate 9 and is screwed into the interior of the lifting frame 5, thus achieving the installation limiting position between the stabilizing plate 9 and the lifting frame 5. Then, the operator installs the steel cable onto the hook 10, which enables quick assembly and disassembly between the hook 10 and the lifting frame 5. This allows the operator to quickly maintain the lifting frame 5, improve its service life, and replace the lifting frame 5 according to actual usage needs, so that the lifting frame 5 can bear different items.

[0033] Please also refer to... Figure 6The adjustment assembly 4 includes a guide groove 44 formed on the top of the crossbeam 1 and an adjustment seat 41 slidably mounted on the crossbeam 1. The top of the adjustment seat 41 has an opening groove, and a drive roller 42 is rotatably mounted inside the opening groove. A drive motor 43 is mounted on one side of the adjustment seat 41. The main shaft of the drive motor 43 passes through the adjustment seat 41 and is connected to the drive roller 42. The bottom of the drive roller 42 is inside the guide groove 44. Based on this, when it is necessary to adjust the position of the lifting motor 2 and the hook 10, the drive motor 43 drives the drive roller 42 to rotate, so that the drive roller 42 rotates inside the guide groove 44 and contacts the surface of the crossbeam 1. This allows the adjustment seat 41 and the lifting motor 2 to move on the crossbeam 1 as the drive roller 42 rotates, so that the lifting motor 2 and the hook 10 can be used to lift items at different positions.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A small-sized portal crane, characterized in that, include: A crossbeam (1) is provided with a lifting motor (2) installed at the bottom of the crossbeam (1), and a lifting frame (5) is installed at the bottom of the lifting motor (2). A disassembly assembly is provided between the lifting motor (2) and the lifting frame (5). The buffer assembly (3) is located on both sides of the lifting frame (5) and is used to buffer and protect both sides of the lifting frame (5). The buffer assembly (3) includes a mounting plate (31) fixedly installed on both sides of the lifting frame (5) and a contact plate (33) fixedly installed on one side of the mounting plate (31). An extension assembly for adjusting the buffer plate (32) is provided between the mounting plate (31) and the buffer plate (32).

2. A small-sized portal crane according to claim 1, characterized in that: The extension assembly includes multiple hinge seats two (35) fixedly installed on one side of the buffer plate (32) and two slides (310) opened on one side of the mounting plate (31). Two hinge seats one (34) are slidably installed inside each of the two slides (310). A linkage rod (36) is hinged between the multiple hinge seats one (34) and the multiple hinge seats two (35). A guide component for guiding the hinge seats one (34) is provided inside each of the two slides (310).

3. A small-sized portal crane according to claim 2, characterized in that: The guide assembly includes a guide rod (37) fixedly installed inside the slide groove (310) and two compression springs (39) sleeved on the guide rod (37). A limiting plate (38) is fixedly installed on the guide rod (37) and the limiting plate (38) is located between the two compression springs (39). The hinge seat (34) is slidably installed on the guide rod (37) and the guide rod (37) is located on one side of the compression springs (39).

4. A small-sized portal crane according to claim 3, characterized in that: Mounting brackets (6) are fixedly installed on both sides of the crossbeam (1), and base plates (7) are fixedly installed on the bottom of the two mounting brackets (6). A driving component for driving the base plate (7) to move is provided on the base plate (7).

5. A small-sized portal crane according to claim 4, characterized in that: The drive assembly includes a dual-axis motor (13) mounted on the top of the base plate (7) and a roller hub mounted on the bottom of the base plate (7). Both the roller hub and one side of the main shaft of the dual-axis motor (13) are equipped with synchronous pulleys (14), and a synchronous belt (8) is wound between the two synchronous pulleys (14).

6. A small-sized portal crane according to claim 1, characterized in that: The assembly and disassembly assembly includes a hook (10) installed at the bottom of the lifting motor (2) and multiple stabilizing plates (9) installed on the outer wall of the lifting frame (5). Multiple limiting rods (11) are fixed on one side of the lifting frame (5). The stabilizing plates (9) are inserted into the limiting rods (11). Multiple fixing bolts (12) are screwed onto one side of the stabilizing plates (9). One side of the multiple fixing bolts (12) passes through the stabilizing plates (9) and extends into the interior of the lifting frame (5). A steel cable is installed on the top of the multiple stabilizing plates (9). The steel cable is installed on the hook (10). An adjustment assembly (4) for driving the lifting motor (2) to move is provided between the crossbeam (1) and the lifting motor (2).

7. A small-sized portal crane according to claim 6, characterized in that: The adjustment assembly (4) includes a guide groove (44) opened on the top of the crossbeam (1) and an adjustment seat (41) slidably installed on the crossbeam (1). The top of the adjustment seat (41) is provided with an opening groove, and a drive roller (42) is rotatably installed inside the opening groove. A drive motor (43) is installed on one side of the adjustment seat (41). The main shaft of the drive motor (43) passes through the adjustment seat (41) and is connected to the drive roller (42). The bottom of the drive roller (42) is inside the guide groove (44).

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