Electric hoist portal crane

Abstract

The utility model discloses a gantry crane with an electric hoist, which belongs to the technical field of hoisting equipment and comprises a support, a rail frame is mounted on the support in a sliding manner, an electric hoist component is mounted on the rail frame, two groups of first pulleys and two groups of second pulleys are further arranged on the rail frame, the first pulleys are oppositely arranged in parallel, and the second pulleys are oppositely arranged in parallel. The second pulley is arranged perpendicular to the first pulley, a third pulley block is arranged below the rail frame, a lifting hook is mounted on the third pulley block, and the electric hoist assembly, the first pulley, the second pulley and the third pulley block are wound with the rope. By utilizing the gantry crane, the technical problem that an electric hoist gantry crane in the prior art is small in hoisting quantity and cannot meet the hoisting requirement of a construction site can be solved.

Description

Technical Field

[0001] This utility model belongs to the field of lifting equipment technology, specifically relating to an electric hoist gantry crane. Background Technology

[0002] Cranes, also known as overhead cranes, gantry cranes, or hoists, are multi-action lifting machines that vertically lift and horizontally move heavy objects within a certain range.

[0003] Existing electric hoist gantry cranes generally consist of a crossbeam, support rods connected to both ends of the crossbeam, a trolley mounted on the crossbeam, and an electric hoist attached to the trolley. These cranes typically rely solely on the electric hoist to provide a single lifting point, resulting in a small lifting capacity that cannot meet the lifting needs of construction sites. Utility Model Content

[0004] The purpose of this utility model is to provide an electric hoist gantry crane to solve the technical problem that the existing electric hoist gantry cranes have a small lifting capacity and cannot meet the lifting needs of construction sites.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric hoist gantry crane, including a support frame, a rail frame slidably mounted on the support frame, an electric hoist assembly mounted on the rail frame, a first pulley and a second pulley on the rail frame, two sets of the first pulleys arranged parallel to each other, the second pulleys arranged perpendicular to the first pulleys, a third pulley group below the rail frame, a hook mounted on the third pulley group, and the electric hoist gantry crane also includes a rope, the rope being wound around the electric hoist assembly, the first pulley, the second pulley and the third pulley group.

[0006] Furthermore, the rope is wound in the following manner: one end of the rope first passes through the third pulley group, then around the first pulley, and then back to the third pulley group from the first pulley. It then winds from the third pulley group to the second pulley, and then back to the third pulley group from the second pulley. It then winds from the third pulley group to the first pulley, and then back to the third pulley group from the first pulley. Finally, it winds back to the electric hoist assembly through the third pulley group.

[0007] Furthermore, the electric hoist assembly includes a pair of bases spaced apart, a rotating shaft, rollers, and a drive motor. The rotating shaft is rotatably mounted on the base, the rollers are sleeved on the rotating shaft and used for winding ropes, and the drive motor is connected to the rotating shaft via a coupling.

[0008] Furthermore, the roller is provided with a receiving groove for positioning the rope.

[0009] Furthermore, the bracket is provided with a pair of slide rails, and the bottom of the rail frame is provided with pulleys. The slide rails and pulleys cooperate with each other. The rail frame is also provided with a rotary motor, which is used to drive the pulleys to rotate.

[0010] Furthermore, the end of the slide rail is provided with a stop for limiting the sliding stroke of the rail frame.

[0011] Furthermore, the rail frame includes a pair of vertical rails respectively disposed on the slide rail, a first horizontal rail and a second horizontal rail are disposed between the vertical rails, an adjustment component is disposed between the first horizontal rail and the second horizontal rail, a first pulley is disposed on the first horizontal rail, a second pulley is disposed on the second horizontal rail, and the pulley is disposed on the vertical rail.

[0012] Furthermore, the adjustment assembly includes a hydraulic cylinder mounted on the vertical rail, and a telescopic rod connected to the hydraulic cylinder and capable of moving the second horizontal rail.

[0013] Furthermore, the third pulley assembly includes a pair of third pulleys and a connecting shaft for connecting the third pulleys, the connecting shaft being provided with a pair of connecting plates for connecting to the hook.

[0014] Furthermore, it also includes a mounting shaft connected to a pair of connecting plates. The mounting shaft is also provided with a mounting box, which has a through hole for one end of the hook to pass through. A bolt is provided on one side of the mounting box, and one end of the hook has a threaded part that mates with the bolt.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model sets an electric hoist assembly on a rail frame, and provides a first pulley, a second pulley, and a third pulley group below the rail frame. A rope then passes sequentially around the electric hoist assembly, the first pulley, the second pulley, and the third pulley group. The electric hoist assembly forms a fixed point, and the first, second, and third pulley assemblies form multiple movable lifting points. These multiple movable lifting points constitute multiple support points, increasing the lifting capacity of the hoisting device. Furthermore, by maintaining the same rope winding direction for the first and third pulley groups, and the rope winding directions for the first and second pulleys being spatially perpendicular, the tension distribution of the rope is optimized, ensuring stable support for the hoisted object in both the horizontal and vertical directions, further improving the safety and stability of the hoisting process.

[0016] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0018] Figure 1 A structural diagram of an electric hoist gantry crane provided for an embodiment of this utility model;

[0019] Figure 2 A first-view structural diagram of an electric hoist gantry crane after removing the support frame, provided for an embodiment of this utility model;

[0020] Figure 3 A second-view structural diagram of an electric hoist gantry crane after removing the support frame, provided for an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the rail frame and electric hoist assembly in this embodiment;

[0022] Figure 5 for Figure 4 Enlarged view of part A;

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Bracket; 11-Slide rail; 12-Hook;

[0025] 2-Rail frame; 21-Vertical rail; 22-First horizontal rail; 23-Second horizontal rail; 24-Adjusting assembly; 241-Hydraulic cylinder; 242-Telescopic rod;

[0026] 3-First pulley;

[0027] 4-Second pulley;

[0028] 5-Third pulley block; 51-Third pulley; 52-Connecting shaft; 53-Connecting plate; 54-Mounting shaft; 55-Mounting box; 56-Bolt;

[0029] 6-Electric hoist assembly; 61-Base; 62-Shaft; 63-Roller; 64-Drive motor; 65-Coupling; 66-Accommodation slot;

[0030] 7- Rope;

[0031] 8-Pulley;

[0032] 9-Rotating motor. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments, not all embodiments. Based on this embodiment, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] like Figures 1 to 5 As shown, this embodiment provides an electric hoist gantry crane, including a support 1, a rail frame 2 slidably mounted on the support 1, an electric hoist assembly 6 mounted on the rail frame 2, a first pulley 3 and a second pulley 4 on the rail frame 2, two sets of the first pulley 3 arranged in parallel, and the second pulley 4 arranged perpendicular to the first pulley 3. A third pulley group 5 is provided below the rail frame 2, and a hook 12 is mounted on the third pulley group 5. In addition, the electric hoist gantry crane also includes a rope 7, which is wound around the electric hoist assembly 6, the first pulley 3, the second pulley 4 and the third pulley group 5. With this design, the electric hoist assembly 6 can serve as a fixed point, while the first pulley 3, the second pulley 4, and the third pulley group 5 form multiple movable lifting points. These movable lifting points together constitute multiple support points, thereby significantly increasing the lifting capacity of the hoisting device. In addition, the rope winding directions of the first pulley 3 and the third pulley group 5 are in the same direction, while the rope winding directions of the first pulley 3 and the second pulley 4 are spatially perpendicular, which optimizes the tension distribution of the rope. This difference in tension distribution allows the hoisted object to receive stable support in both the horizontal and vertical directions, thereby further improving the safety and stability of the hoisting.

[0035] Specifically, please refer to Figure 2 As shown, the winding method of the rope 7 can be as follows: one end of the rope 7 first passes through the third pulley group 5, then goes around the first pulley 3, and then goes back from the first pulley 3 to the third pulley group 5. Then it goes from the third pulley group 5 to the second pulley 4, and then from the second pulley 4 back to the third pulley group 5. Then it goes from the third pulley group 5 to the first pulley 3, and then from the first pulley 3 back to the third pulley group 5. Finally, it goes back to the electric hoist assembly 6 through the third pulley group 5.

[0036] Specifically, please refer to Figure 2 and Figure 3As shown, the electric hoist assembly 6 includes a pair of spaced-apart bases 61, a rotating shaft 62, rollers 63, and a drive motor 64. The rotating shaft 62 is rotatably mounted on the base 61, and the rollers 63 are sleeved on the rotating shaft 62 and can be used to wind the rope 7. The drive motor 64 is connected to the rotating shaft 62 via a coupling 65. Thus, the drive motor 64 drives the rotating shaft 62 to rotate, which in turn drives the rollers 63 to rotate, thereby enabling the rope 7 to be wound and unwound. In this embodiment, the winding and unwinding of the rope 7 can be achieved by controlling the forward and reverse rotation of the drive motor.

[0037] Specifically, please refer to Figure 2 As shown, the roller 63 is provided with a receiving groove 66. By setting the receiving groove 66, the rope 7 can be accurately positioned to prevent it from shifting during the winding process, thus ensuring the accuracy and safety of the lifting operation.

[0038] Specifically, please refer to Figure 1 and Figure 2 As shown, the support 1 is equipped with a pair of slide rails 11, and the bottom of the rail frame 2 is equipped with pulleys 8. The slide rails 11 cooperate with the pulleys 8. The rail frame 2 is also equipped with a rotary motor 9, which can be used to drive the pulleys 8 to rotate. In this way, by driving the pulleys 8 to slide on the slide rails 11 through the rotary motor 9, the rail frame 2, as well as the electric hoist assembly 6, the first pulley 3, the second pulley 4, the third pulley group 5, and the hook 12 installed on the rail frame 2, can be moved along the direction of the slide rails 11, realizing the flexible movement of the hoisted object in the horizontal direction, and further improving the flexibility and applicability of the crane.

[0039] Specifically, in order to limit the sliding stroke of the rail frame 2, the end of the slide rail 11 is also provided with a stop to ensure that the rail frame 2 does not exceed the predetermined range during the sliding process.

[0040] Specifically, please refer to Figure 2 and Figure 4 As shown, the rail frame 2 includes a pair of vertical rails 21 respectively mounted on slide rails 11. A first horizontal rail 22 and a second horizontal rail 23 are provided between the vertical rails 21. An adjusting component 24 is provided between the first horizontal rail 22 and the second horizontal rail 23. A first pulley 3 is mounted on the first horizontal rail 22, a second pulley 4 is mounted on the second horizontal rail 23, and a pulley 8 is mounted on the vertical rail 21. Thus, the pulley 8 mounted on the vertical rail 21 allows the crane to move along the slide rails 11 on the support 1. The first horizontal rail 22 and the second horizontal rail 23 between the vertical rails 21 form a stable frame structure, effectively ensuring the structural strength and stability of the crane. Furthermore, the adjusting component 24 allows for flexible adjustment of the distance between the first horizontal rail 22 and the second horizontal rail 23 to adapt to different lifting requirements, improving the versatility and practicality of the crane.

[0041] Specifically, please refer to Figure 5 As shown, the adjustment assembly 24 includes a hydraulic cylinder 241 mounted on the vertical rail 21, and a telescopic rod 242 connected to the hydraulic cylinder 241 and capable of moving the second horizontal rail 23. By controlling the extension and retraction of the hydraulic cylinder 241, the telescopic rod 242 can be driven to move the second horizontal rail 23, thereby adjusting the distance between the first horizontal rail 22 and the second horizontal rail 23. This adjustment method is simple and quick, and has high adjustment accuracy, ensuring the stability and safety of the crane under different working conditions.

[0042] Specifically, the design of the third pulley block 5 is also flexible to accommodate different hoisting heights and angles. For details, please refer to... Figure 1 As shown, the third pulley block 5 includes a pair of third pulleys 51 and a connecting shaft 52 for connecting the third pulleys 51. The connecting shaft 52 is provided with a pair of connecting plates 53 connected to the hook 12. The hook 12 can be connected to the connecting shaft 52 through the connecting plates 53.

[0043] Specifically, please refer to Figure 2 As shown, the crane also includes a mounting shaft 54, which is connected to a pair of connecting plates 53. Furthermore, the mounting shaft 54 ​​is equipped with a mounting box 55, which has a through hole for one end of the hook 12 to pass through. A bolt 56 is provided on one side of the mounting box 55, and one end of the hook 12 has a threaded portion that mates with the bolt 56. The connection between the bolt 56 and the threaded portion ensures a secure connection between the hook 12 and the connecting plates 53, guaranteeing safe lifting operations even under extreme conditions.

[0044] In summary, the electric hoist assembly 6 can slide on the slide rail 11 via the rail frame 2, thereby adjusting the position of the lifting point according to actual needs and increasing the flexibility of use. The arrangement of the first pulley 3 and the second pulley 4, and the different rope winding directions between them and the third pulley group 5, not only achieve multi-point lifting but also optimize the rope tension distribution, ensuring a smooth lifting process. Simultaneously, by adjusting the spacing between the first horizontal rail 22 and the second horizontal rail 23 using the adjusting assembly 24, it can accommodate objects of different sizes, further improving the applicability and practicality of this application. In conclusion, the electric hoist gantry crane of this application, through its ingenious structural design, effectively solves the problem of small lifting capacity in the prior art, improving lifting efficiency and safety.

[0045] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. An electric hoist gantry crane, comprising a support frame, characterized in that: A rail frame is slidably mounted on the support frame, and an electric hoist assembly is mounted on the rail frame. The rail frame is also provided with a first pulley and a second pulley. There are two sets of the first pulleys, which are arranged in parallel relative to each other. The second pulley is arranged perpendicular to the first pulley. A third pulley group is provided below the rail frame, and a hook is mounted on the third pulley group. The electric hoist gantry crane also includes a rope, which is wound around the electric hoist assembly, the first pulley, the second pulley, and the third pulley group.

2. The electric hoist gantry crane according to claim 1, characterized in that: The rope is wound as follows: one end of the rope first passes through the third pulley group, then around the first pulley, and then back to the third pulley group from the first pulley. It then goes from the third pulley group to the second pulley, and then back to the third pulley group from the second pulley. It then goes from the third pulley group to the first pulley, and then back to the third pulley group from the first pulley. Finally, it goes back to the electric hoist assembly through the third pulley group.

3. An electric hoist gantry crane according to claim 1 or 2, characterized in that: The electric hoist assembly includes a pair of bases spaced apart, a rotating shaft, rollers, and a drive motor. The rotating shaft is rotatably mounted on the base, the rollers are sleeved on the rotating shaft and used for winding ropes, and the drive motor is connected to the rotating shaft via a coupling.

4. The electric hoist gantry crane according to claim 3, characterized in that: The roller is provided with a accommodating groove for positioning the rope.

5. An electric hoist gantry crane according to claim 1 or 2, characterized in that: The bracket is equipped with a pair of slide rails, and the bottom of the rail frame is equipped with pulleys. The slide rails and pulleys cooperate with each other. The rail frame is also equipped with a rotary motor, which is used to drive the pulleys to rotate.

6. The electric hoist gantry crane according to claim 5, characterized in that: The end of the slide rail is provided with a stop to limit the sliding stroke of the rail frame.

7. The electric hoist gantry crane according to claim 5, characterized in that: The rail frame includes a pair of vertical rails respectively disposed on the slide rail, a first horizontal rail and a second horizontal rail are disposed between the vertical rails, an adjustment component is disposed between the first horizontal rail and the second horizontal rail, a first pulley is disposed on the first horizontal rail, a second pulley is disposed on the second horizontal rail, and the pulley is disposed on the vertical rail.

8. An electric hoist gantry crane according to claim 7, characterized in that: The adjustment assembly includes a hydraulic cylinder mounted on a vertical rail and a telescopic rod connected to the hydraulic cylinder and capable of moving a second horizontal rail.

9. An electric hoist gantry crane according to claim 1 or 2, characterized in that: The third pulley assembly includes a pair of third pulleys and a connecting shaft for connecting the third pulleys, the connecting shaft being provided with a pair of connecting plates for connecting to the hook.

10. An electric hoist gantry crane according to claim 9, characterized in that: It also includes a mounting shaft, which is connected to a pair of connecting plates. The mounting shaft is also provided with a mounting box, which has a through hole for one end of the hook to pass through. A bolt is provided on one side of the mounting box, and one end of the hook has a threaded part that mates with the bolt.

Images