Main girder structure of electric single-beam bridge crane

Abstract

The utility model discloses an electric single-beam bridge crane main beam structure which comprises a main beam body, a horizontal rod is arranged at the bottom of the main beam body, connecting blocks are fixedly installed at the two ends of the main beam body, driving mechanisms are arranged in the connecting blocks, first guide rails are arranged at the bottoms of the two connecting blocks, and a second guide rail is arranged at the bottom of each first guide rail. The two ends of the horizontal rod are slidably connected with the side walls of the two first guide rails, knocking hammers are rotationally arranged on the two sides of the interior of the main beam body, pressure sensors are arranged on the two sides of the two knocking hammers, and a transmission mechanism is arranged between the horizontal rod and the main beam body. The transmission mechanism between the horizontal rod and the main beam body can drive the knocking hammers on the two sides to knock the pressure sensor, the pressure sensor receives pressure data, converts the pressure data into electric signals and transmits the electric signals to the motor, the motor stops running, and the main beam body is prevented from further inclining.

Description

Technical Field

[0001] The utility model relates to the technical field of crane main girders, in particular to a main girder structure of an electric single-girder bridge crane. Background Art

[0002] The main girder of an electric single-girder bridge crane is a key component in its structural design. It not only bears the self-weight of the crane, the lifted weight, and the dynamic load during operation, but also determines the overall stability and working performance of the crane.

[0003] The main girder is the main structure of an electric single-girder bridge crane. It spans above workshops, warehouses and other places, and moves horizontally along the track through the traveling mechanisms (such as wheels) at both ends to achieve the horizontal movement of the crane. Hoisting mechanisms such as electric hoists or trolleys are installed on the main girder for vertical lifting of goods. Therefore, the strength and stiffness of the main girder are directly related to the safety performance, load-bearing capacity, running stability and service life of the crane.

[0004] With the continuous development of modern industrial technology, the design, manufacture and use of the main girder of an electric single-girder bridge crane are also constantly progressing. In the future, the main girder will pay more attention to the development trends of lightweight, high strength and environmental protection and energy conservation. Lightweight design can reduce the self-weight of the crane and improve the lifting capacity; the application of high-strength materials can improve the load-bearing capacity and service life of the main girder; the manufacturing processes and materials for environmental protection and energy conservation meet the requirements of sustainable development.

[0005] For the existing main girder of an electric single-girder bridge crane, during operation, the rollers at both ends of the main girder are driven by motors at both ends. The rotation of the rollers drives the main girder to move on the track. In the actual use process, since the rollers at both ends are controlled by independent motors respectively, when there is a certain deviation in the driving speeds of the two motors for the rollers, it will cause the main girder to tilt on the track. If the motors are not turned off in time, it will cause the main girder to tilt severely and even lead to the detachment of the main girder. Summary of the Utility Model

[0006] The purpose of the present invention is to provide a main girder structure of an electric single-girder bridge crane to solve the above deficiencies in the prior art.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme: A main girder structure of an electric single-girder bridge crane, including a main girder body, a horizontal rod is arranged at the bottom of the main girder body, connecting blocks are fixedly installed at both ends of the main girder body, a driving mechanism is arranged inside the connecting blocks, first guide rails are arranged at the bottoms of both connecting blocks, both ends of the horizontal rod are slidably connected to the side walls of the two first guide rails, knocking hammers are rotatably arranged on both sides inside the main girder body, pressure sensors are arranged on both sides of the two knocking hammers, and a transmission mechanism is arranged between the horizontal rod and the main girder body.

[0008] As a further description of the above technical solution: The transmission mechanism includes a first connecting column, the first connecting column is fixedly installed at the top end of the horizontal rod, the top end of the horizontal rod penetrates through the bottom of the main beam body and is fixedly connected with a first gear, the first connecting column is rotationally matched with the main beam body, both sides inside the main beam body are rotatably installed with second gears, both of the second gears are meshed with the first gear, and one ends of the two knocking hammers are respectively fixedly connected with the two second gears.

[0009] As a further description of the above technical solution: The driving mechanism includes two rollers, the two rollers are rotatably installed inside the connecting block, a fourth gear is fixedly installed on one side of each of the two rollers, a motor is fixedly installed on the side wall of the connecting block, the output end of the motor penetrates through the side wall of the connecting block and is fixedly installed with a third gear, the third gear is arranged between the two fourth gears, and the third gear is respectively meshed with the two second gears.

[0010] As a further description of the above technical solution: Connecting rods are fixedly installed on both sides inside the main beam body, the pressure sensors are fixedly installed on the side walls of the connecting rods close to the knocking hammers, and the pressure sensors on the same side are electrically connected to the motor.

[0011] As a further description of the above technical solution: Sliding grooves are opened on both sides of the bottom of the main beam body, sliders are slidably installed inside the two sliding grooves, second connecting columns are fixedly installed at the bottoms of the two sliders, the bottoms of the two second connecting columns are fixedly connected to the top of the horizontal rod, springs are fixedly installed on both sides inside the two sliding grooves, one ends of the two springs are respectively fixedly connected to both sides of the slider, a limiting rod is fixedly installed inside the two sliding grooves, the limiting rod is slidably matched with the slider, and the limiting rod is arranged inside the spring.

[0012] As a further description of the above technical solution: A hollow groove is opened on the top of the main beam body, and a reinforcing rib is fixedly installed inside the hollow groove.

[0013] As a further description of the above technical solution: Second guide rails are fixedly installed on both sides of the bottom of the main beam body.

[0014] The utility model provides a main beam structure of an electric single-girder bridge crane. It has the following beneficial effects: During the operation of the crane, when the performance and effects of the motors in the driving mechanisms at both ends of the main beam body are inconsistent during driving, there will be a certain deviation in the moving distances at both ends of the main beam body. When this deviation reaches a certain degree, it may cause the main beam body to disengage from the first guide rail. When there is a deviation in the driving performance of the motors at both ends, since the horizontal rod at the bottom of the main beam body is slidably connected to the two first guide rails and its position does not deflect, but when the main beam body and the horizontal rod are non-coplanar and cross, the transmission mechanism between the horizontal rod and the main beam body will drive the knocking hammers on both sides to knock on the pressure sensor. After the pressure sensor receives the pressure data, it converts it into an electrical signal and transmits it to the motor, causing the motor to stop running and preventing the main beam body from tilting further.

[0015] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not intended to limit the present disclosure.

[0016] This application document provides an overview of various implementations or examples of the technology described in the present disclosure and is not a full disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a main beam structure of an electric single-girder bridge crane proposed by the utility model;

[0018] Figure 2 It is a three-dimensional structure diagram of another perspective of the utility model;

[0019] Figure 3 It is a three-dimensional sectional structure diagram of the utility model;

[0020] Figure 4 It is a schematic diagram of the internal structure of the utility model;

[0021] Figure 5 It is a three-dimensional structure diagram of the roller of the utility model.

[0022] LEGEND DESCRIPTION:

[0023] 1. Main beam body; 2. Horizontal rod; 3. First connecting column; 4. First gear; 5. Second gear; 6. Knocking hammer; 7. Pressure sensor; 8. Connecting rod; 9. Chute; 10. Second connecting column; 11. Slide block; 12. Spring; 13. Limiting rod; 14. Connecting block; 15. Roller; 16. Motor; 17. Third gear; 18. Fourth gear; 19. First guide rail; 20. Hollow groove; 21. Reinforcing rib; 22. Second guide rail. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0025] Referring to Figures 1-5 , a main beam structure of an electric single-girder bridge crane, comprising a main beam body 1. A horizontal rod 2 is arranged at the bottom of the main beam body 1. Connecting blocks 14 are fixedly installed at both ends of the main beam body 1. A driving mechanism is arranged inside the connecting blocks 14. First guide rails 19 are arranged at the bottoms of the two connecting blocks 14. Both ends of the horizontal rod 2 are slidably connected to the side walls of the two first guide rails 19. Knocking hammers 6 are rotatably arranged on both sides inside the main beam body 1. Pressure sensors 7 are arranged on both sides of the two knocking hammers 6. A transmission mechanism is arranged between the horizontal rod 2 and the main beam body 1; during the working process of the crane, it is necessary to drive the main beam body 1 to move on the first guide rail 19 through a starting mechanism. When the driving mechanism drives the main beam body 1 to move on the first guide rail 19, after long-term use, when the performance and effect of the motors 16 in the driving mechanisms at both ends are inconsistent during driving, a certain deviation will occur in the moving distances at both ends of the main beam body 1. When this deviation reaches a certain degree, it may cause the main beam body 1 to disengage from the first guide rail 19. When the driving performances of the motors 16 at both ends deviate, since the horizontal rod 2 at the bottom of the main beam body 1 is slidably connected to the two first guide rails 19, its position does not deflect. However, when the main beam body 1 and the horizontal rod 2 are non-coplanar and cross, the transmission mechanism between the horizontal rod 2 and the main beam body 1 will drive the knocking hammers 6 on both sides to knock on the pressure sensors 7. After the pressure sensors 7 receive the pressure data, they convert it into an electrical signal and transmit it to the motor 16, so that the motor 16 stops operating, avoiding further skew of the main beam body 1.

[0026] As a preferred technical solution of this embodiment, the transmission mechanism includes a first connecting column 3. The first connecting column 3 is fixedly installed at the top end of the horizontal rod 2. The top end of the horizontal rod 2 penetrates through the bottom of the main beam body 1 and is fixedly connected to a first gear 4. The first connecting column 3 is rotatably matched with the main beam body 1. Second gears 5 are rotatably installed on both sides inside the main beam body 1. Both of the second gears 5 are meshed with the first gear 4. One ends of the two knocking hammers 6 are respectively fixedly connected to the two second gears 5; during the movement of the device, when the main beam body 1 and the horizontal rod 2 are non-coplanar and cross, the main beam body 1 rotates relative to the horizontal rod 2. Since the first gear 4 is fixedly connected to the horizontal rod 2 through the first connecting column 3, when the main beam body 1 rotates, the two second gears 5 rotate under the action of the first gear 4, driving the knocking hammers 6 to rotate and knock on the pressure sensors 7.

[0027] As a preferred technical solution of this embodiment, the driving mechanism includes two rollers 15, the two rollers 15 are rotatably installed inside the connecting block 14, a fourth gear 18 is fixedly installed on one side of each of the two rollers 15, a motor 16 is fixedly installed on the side wall of the connecting block 14, and the output end of the motor 16 penetrates through the side wall of the connecting block 14 and is fixedly installed with a third gear 17. The third gear 17 is arranged between the two fourth gears 18, and the third gear 17 meshes with the two second gears 5 respectively; when driving the main beam body 1 to move, the motor 16 is turned on, and the output end of the motor 16 drives the third gear 17 to rotate, driving the two fourth gears 18 to drive the rollers 15 to rotate.

[0028] As a preferred technical solution of this embodiment, connecting rods 8 are fixedly installed on both sides inside the main beam body 1, the pressure sensor 7 is fixedly installed on the side wall of one end of the connecting rod 8 close to the knocking hammer 6, and the pressure sensor 7 on the same side is electrically connected to the motor 16; when the main beam body 1 deflects and drives the knocking hammer 6 to knock the pressure sensor 7 through the transmission mechanism, the pressure sensor 7 converts the received pressure signal into an electrical signal and transmits it to the motor 16, causing the motor 16 to stop running.

[0029] As a preferred technical solution of this embodiment, sliding grooves 9 are opened on both sides of the bottom of the main beam body 1, sliders 11 are slidably installed inside the two sliding grooves 9, a second connecting column 10 is fixedly installed at the bottom of each of the two sliders 11, and the bottom ends of the two second connecting columns 10 are fixedly connected to the top of the horizontal rod 2. Springs 12 are fixedly installed on both sides inside the two sliding grooves 9, one ends of the two springs 12 are respectively fixedly connected to both sides of the slider 11, a limiting rod 13 is fixedly installed inside the two sliding grooves 9, the limiting rod 13 is slidably matched with the slider 11, and the limiting rod 13 is arranged inside the spring 12; when the main beam body 1 deflects, the springs 12 on both sides inside the sliding groove 9 are respectively pulled and compressed, and after the motor 16 stops running, the elastic force of the spring 12 drives the main beam body 1 to restore balance, improving the safety performance of the device.

[0030] As a preferred technical solution of this embodiment, a hollow groove 20 is opened at the top of the main beam body 1, and a reinforcing rib 21 is fixedly installed inside the hollow groove 20; through the arrangement of the hollow groove 20 and the reinforcing rib 21, the weight of the main beam body 1 is reduced, and the support strength of the main beam body 1 can be ensured.

[0031] As a preferred technical solution of this embodiment, second guide rails 22 are fixedly installed on both sides of the bottom of the main beam body 1; by installing the lifting mechanism on the main beam body 1 through the second guide rails 22, the lifting mechanism can move along the main beam body 1.

[0032] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0033] As mentioned above, the above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A main beam structure of an electric single-beam bridge crane, comprising a main beam body (1), characterized in that: A horizontal rod (2) is arranged at the bottom of the main beam body (1), connecting blocks (14) are fixedly installed at both ends of the main beam body (1), a driving mechanism is arranged inside the connecting block (14), a first guide rail (19) is arranged at the bottom of the two connecting blocks (14), the two ends of the horizontal rod (2) are slidably connected to the side walls of the two first guide rails (19), knocking hammers (6) are rotatably arranged on both sides of the main beam body (1), pressure sensors (7) are arranged on both sides of the two knocking hammers (6), and a transmission mechanism is arranged between the horizontal rod (2) and the main beam body (1).

2. The main beam structure of an electric single-beam bridge crane according to claim 1, characterized in that: The transmission mechanism comprises a first connecting column (3), the first connecting column (3) is fixedly mounted on the top end of the horizontal rod (2), the top end of the horizontal rod (2) passes through the bottom of the main beam body (1) and is fixedly connected to a first gear (4), the first connecting column (3) is rotatably matched with the main beam body (1), second gears (5) are rotatably mounted on both sides of the main beam body (1), the two second gears (5) are meshed with the first gear (4), and one end of the two knocking hammers (6) is fixedly connected to the two second gears (5) respectively.

3. The main beam structure of an electric single-beam bridge crane according to claim 2, characterized in that: The driving mechanism comprises two rollers (15), the two rollers (15) are rotatably mounted inside the connecting block (14), a fourth gear (18) is fixedly mounted on one side of the two rollers (15), a motor (16) is fixedly mounted on the side wall of the connecting block (14), an output end of the motor (16) passes through the side wall of the connecting block (14) and a third gear (17) is fixedly mounted thereon, the third gear (17) is arranged between the two fourth gears (18), and the third gear (17) is respectively meshed with the two second gears (5).

4. The main beam structure of an electric single-beam bridge crane according to claim 3, characterized in that: Connecting rods (8) are fixedly installed on both sides of the main beam body (1), and the pressure sensor (7) is fixedly installed on the side wall of one end of the connecting rod (8) close to the striking hammer (6), and the pressure sensor (7) and the motor (16) on the same side are electrically connected.

5. The main beam structure of an electric single-beam bridge crane according to claim 4, characterized in that: Both sides of the bottom of the main beam body (1) are provided with sliding grooves (9), and sliders (11) are slidably installed inside the two sliding grooves (9), and second connecting columns (10) are fixedly installed at the bottom of the two sliders (11), and the bottom ends of the two second connecting columns (10) are fixedly connected to the top of the horizontal rod (2), and springs (12) are fixedly installed on both sides of the two sliding grooves (9), and one end of the two springs (12) is fixedly connected to the two sides of the slider (11), respectively, and limiting rods (13) are fixedly installed inside the two sliding grooves (9), and the limiting rods (13) are slidably matched with the sliders (11), and the limiting rods (13) are arranged inside the springs (12).

6. The main beam structure of an electric single-beam bridge crane according to claim 4, characterized in that: A hollow groove (20) is provided on the top of the main beam body (1), and a reinforcing rib (21) is fixedly installed inside the hollow groove (20).

7. The main beam structure of an electric single-beam bridge crane according to claim 4, characterized in that: Second guide rails (22) are fixedly mounted on both sides of the bottom of the main beam body (1).

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