A large-tonnage crane lateral loading device

Abstract

This utility model discloses a lateral loading device for a large-tonnage crane, including a ground layer and two mounting covers. The openings of the two mounting covers are arranged close to each other, and both mounting covers are located directly above the ground layer. Two support components are fixedly installed inside the ground layer, and both support components are located outside the mounting covers. A vertically arranged casting groove is opened inside the ground layer. The support components include a base cast inside the casting groove. Several pre-embedded screws are pre-embedded inside the base, and the same base plate is slidably sleeved on the outside of the pre-embedded screws. By setting two support components, this utility model can reinforce both sides of the mounting cover of the loading component in the direction of force. Furthermore, by setting two opposing loading components, the two hydraulic cylinders can cooperate with each other, which can avoid the problem of excessive stress on a single device.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, specifically to a lateral loading device for a large-tonnage crane. Background Technology

[0002] In modern industry, large-tonnage cranes play a crucial role, widely used in ports, shipyards, large construction sites, and other settings for lifting and moving heavy equipment and components. With the continuous expansion of industrial scale and the increasing demands for lifting efficiency and precision, the performance and functionality of large-tonnage cranes face even greater challenges.

[0003] A search revealed a utility model patent with Chinese patent publication number CN117228561B, which discloses a large-tonnage crane with an anti-tipping system, relating to the field of crane technology. The crane includes a main chassis with crawler tracks installed at both ends. A central rotating block is rotatably connected inside the main chassis, and a rotating assembly for driving the central rotating block is provided inside the main chassis. A lower chassis is fixedly connected to the upper end of the central rotating block, and a control room is located on one side of the upper surface of the lower chassis.

[0004] As mentioned above, cranes are often equipped with anti-tipping systems during production. Lateral loading devices can simulate the lateral loads that cranes bear under actual working conditions. They are important equipment for crane performance testing, structural strength verification, and stability assessment. When testing large-tonnage cranes, it is often necessary to apply a sufficiently large thrust. The reaction force inevitably leads to stress concentration on the equipment, affecting its service life and reliability. Utility Model Content

[0005] The purpose of this invention is to provide a lateral loading device for a large-tonnage crane to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lateral loading device for a large-tonnage crane, comprising a ground level and two mounting covers. The openings of the two mounting covers are arranged close to each other, and both mounting covers are located directly above the ground level. Two support components are fixedly installed inside the ground level, and both support components are located outside the mounting covers. A vertically arranged casting groove is opened inside the ground level. The support components include a base cast inside the casting groove. Several pre-embedded screws are pre-embedded at equal intervals inside the base. The same base plate is slidably sleeved on the outside of the several pre-embedded screws, and each of the threaded portions of the several pre-embedded screws is threadedly connected to a nut, and the nuts are all in contact with the upper surface of the base plate. The mounting cover is fixedly connected to the middle position of the top outer wall of the base plate. Two vertically arranged support plates are fixedly connected to one side of the outer wall of the opening of the mounting cover, and several vertically arranged support plates are fixedly connected to the other side of the outer wall of the mounting cover away from the opening.

[0007] The mounting cover of the loading component can be reinforced on both sides in the direction of force. By setting two opposing loading components, the two hydraulic cylinders can cooperate with each other, which can avoid the problem of excessive stress on a single device. During the test, one hydraulic cylinder in the retracted state extends, and the extended hydraulic cylinder retracts. The extended hydraulic cylinder pushes the boom through the push plate at the end, and the retracted hydraulic cylinder pulls the boom through the push plate at the end and the pull rope. The two work together to exert force, which can avoid excessive stress on a single device. In addition, even if the crane is overloaded and accidentally tipped over, the push plate can also bear the impact to avoid damage. The reaction force generated during the test acts on the mounting base through the hydraulic cylinder and then is transmitted to the mounting cover. The support plates one and two in the direction of force of the mounting cover can support both sides, so that the stress distribution is wider and stress concentration is further avoided.

[0008] As a further preferred embodiment of this technical solution, several of the aforementioned support plates are fixedly connected to several vertically arranged auxiliary support plates, and a vertically arranged support plate is also fixedly connected to the outer wall of the two support plates on opposite sides.

[0009] As a further preferred embodiment of this technical solution, a number of connecting bars are pre-embedded inside the ground layer, and all of the connecting bars extend into the ground layer casting trench.

[0010] As a further preferred embodiment of this technical solution, a loading assembly is installed inside the mounting cover. The loading assembly includes a lead screw rotatably connected inside the mounting cover. Two vertically arranged limiting rods are fixedly connected inside the mounting cover, and both the lead screw and the two limiting rods are vertically arranged. A mounting seat is threaded to the outside of the lead screw. The mounting seat is slidably connected to the outside of the two limiting rods. A T-shaped vertical groove is opened inside the mounting cover, and the mounting seat is slidably connected inside the T-shaped vertical groove. A motor is fixedly installed on the top outer wall of the mounting cover, and the output end of the motor is coaxially fixed with one end of the top of the lead screw.

[0011] Bring the crane boom close to one of the push plates, then activate the hydraulic cylinder on the other side to drive the push plate connected to it closer to the boom. Then, use a pull rope to wrap around the boom and fix it to the connecting ring at the corresponding position. If the crane is small, start the motor on the top of the mounting cover. The motor output drives the lead screw to rotate, and the lead screw drives the mounting seat connected to it to move along the limit rod. The mounting seat drives the hydraulic cylinder to move synchronously, which helps to improve the adaptability of the device.

[0012] As a further preferred embodiment of this technical solution, a horizontally arranged hydraulic cylinder is fixedly installed on the outer wall of the mounting base away from the mounting cover. A vertically arranged push plate is fixedly connected to the output end of the hydraulic cylinder. A connecting ring is fixedly connected to the top and bottom outer walls of the push plate. A ram's horn hook is snapped onto the outside of each of the two connecting rings. The two ram's horn hooks are fixedly connected to the same pull rope.

[0013] As a further preferred embodiment of this technical solution, the base plate, support plate one, support plate two, auxiliary support plate and mounting cover are all made of high-strength low-alloy steel.

[0014] As a further preferred embodiment of this technical solution, the thread helix angle of the lead screw is smaller than the equivalent friction angle.

[0015] This utility model provides a lateral loading device for a large-tonnage crane, which has the following beneficial effects:

[0016] (1) By setting two support components, this utility model can reinforce both sides of the mounting cover of the loading component in the direction of force. By setting two opposing loading components, the two hydraulic cylinders can cooperate with each other, which can avoid the problem of excessive stress on a single device. During the test, one hydraulic cylinder in the retracted state is extended and the extended hydraulic cylinder is retracted. The extended hydraulic cylinder pushes the boom through the push plate at the end, and the retracted hydraulic cylinder pulls the boom through the push plate at the end and the pull rope. The two cooperate to exert force, which can avoid excessive stress on a single device. In addition, even if the crane is overloaded and accidentally tipped over, the push plate can support it to avoid damage. The reaction force generated during the test acts on the mounting base through the hydraulic cylinder and then is transmitted to the mounting cover. The support plate one and support plate two in the direction of force of the mounting cover can support both sides, so that the stress distribution is wider and stress concentration is further avoided.

[0017] (2) By setting up a loading component, the boom of the crane is brought close to one of the push plates. Then, the hydraulic cylinder on the other side is started to drive the push plate connected to it to the boom. Then, the pull rope is used to wrap around the boom and fix it to the connecting ring at the corresponding position. If the crane is small, the motor on the top of the mounting cover is started. The motor output drives the lead screw to rotate. The lead screw can drive the mounting seat connected to it to move along the limit rod. The mounting seat drives the hydraulic cylinder to move synchronously, which helps to improve the adaptability of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0020] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0021] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point B;

[0022] In the diagram: 1. Ground level; 2. Mounting cover; 3. Support assembly; 4. Loading assembly; 301. Base; 302. Embedded screw; 303. Base plate; 304. Support plate one; 305. Support plate two; 306. Auxiliary support plate; 307. Connecting rib; 401. Screw rod; 402. Limiting rod; 403. Mounting seat; 404. Motor; 405. Hydraulic cylinder; 406. Push plate; 407. Connecting ring; 408. Owl hook; 409. Pull rope. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figure 1 and Figure 2 As shown, in this embodiment, a lateral loading device for a large-tonnage crane includes a ground level 1 and two mounting covers 2. The openings of the two mounting covers 2 are arranged close to each other, and both mounting covers 2 are located directly above the ground level 1. Two support components 3 are fixedly installed inside the ground level 1, and both support components 3 are located outside the mounting covers 2. A vertically arranged casting groove is opened inside the ground level 1. The support components 3 include a base 301 cast inside the casting groove. Several equidistant pre-embedded pre-embedded elements are pre-embedded inside the base 301. A series of pre-embedded screws 302 are externally slidably fitted with the same base plate 303, and each of the pre-embedded screws 302 has a nut threadedly connected to its threaded portion. The nuts are all in contact with the upper surface of the base plate 303. The mounting cover 2 is fixedly connected to the middle position of the top outer wall of the base plate 303. Two vertically arranged support plates 305 are fixedly connected to one side of the outer wall of the opening of the mounting cover 2, and several vertically arranged support plates 304 are fixedly connected to the other side of the outer wall of the mounting cover 2 away from the opening.

[0025] Several support plates 304 are fixedly connected to several vertically arranged auxiliary support plates 306, and two support plates 305 are also fixedly connected to a vertically arranged support plate 305 on the outer wall of the side away from each other, which can further increase the connection area and tensile capacity of the two, and further improve the support effect of the support component 3.

[0026] Several connecting bars 307 are pre-embedded inside the ground layer 1, and all the connecting bars 307 extend into the pouring trench of the ground layer 1. After the base 301 is poured, the ground layer can be supported by the connecting bars 307.

[0027] During testing, one hydraulic cylinder 405 in the retracted state is extended, and the extended hydraulic cylinder 405 retracts. The extended hydraulic cylinder 405 pushes the boom through the push plate 406 at its end, while the retracted hydraulic cylinder 405 pulls the boom through the push plate 406 at its end and the pull rope 409. The two work together to exert force, which can prevent excessive stress on a single piece of equipment. Furthermore, even if the crane is overloaded and accidentally tipped over, the push plate 406 can bear the impact, preventing damage. The reaction force generated during the test acts on the mounting base 403 through the hydraulic cylinder 405, and then is transmitted to the mounting cover 2. The support plate 304 and support plate 305 in the direction of force on the mounting cover 2 can support both sides, making the stress distribution wider and further preventing stress concentration.

[0028] like Figure 3 and Figure 4 As shown, a loading assembly 4 is installed inside the mounting cover 2. The loading assembly 4 includes a lead screw 401 rotatably connected inside the mounting cover 2. Two vertically arranged limiting rods 402 are fixedly connected inside the mounting cover 2, and the lead screw 401 and the two limiting rods 402 are both vertically arranged. A mounting seat 403 is threadedly connected to the outside of the lead screw 401. The mounting seat 403 is slidably connected to the outside of the two limiting rods 402. A T-shaped vertical groove is opened inside the mounting cover 2, and the mounting seat 403 is slidably connected inside the T-shaped vertical groove. A motor 404 is fixedly installed on the top outer wall of the mounting cover 2. The output end of the motor 404 is coaxially fixed with one end of the top of the lead screw 401.

[0029] A horizontally arranged hydraulic cylinder 405 (a long-stroke hydraulic cylinder, which is a conventional device, is fixedly installed on the outer wall of the mounting base 403 away from the mounting cover 2; details such as the drive structure, oil supply structure, and interface are not described in detail here) is fixedly connected to the output end of the hydraulic cylinder 405. A vertically arranged push plate 406 is fixedly connected to the top and bottom outer walls of the push plate 406. A connecting ring 407 is fixedly connected to the outside of each of the two connecting rings 407. A ram's horn hook 408 is snapped onto the outside of each of the two ram's horn hooks 408. The same pull rope 409 is fixedly connected to the two ram's horn hooks 408.

[0030] Bring the crane boom close to one of the push plates 406, then activate the hydraulic cylinder 405 on the other side to drive the push plate 406 connected to it closer to the boom. Then, use the pull rope 409 to wrap around the boom and fix it to the connecting ring 407 at the corresponding position. If the crane is small, start the motor 404 on the top of the mounting cover 2. The output end of the motor 404 drives the lead screw 401 to rotate. The lead screw 401 can then drive the mounting base 403 connected to it to move along the limit rod 402. The mounting base 403 drives the hydraulic cylinder 405 to move synchronously, which helps to improve the adaptability of the device.

[0031] like Figure 1 and Figure 2 As shown, the base plate 303, support plate one 304, support plate two 305, auxiliary support plate 306 and mounting cover 2 are all made of high-strength low-alloy steel. This type of steel has high yield strength and tensile strength, while maintaining good weldability and formability.

[0032] like Figure 3 As shown, the thread helix angle of the lead screw 401 is less than the equivalent friction angle, giving it a self-locking property.

[0033] This utility model provides a lateral loading device for a large-tonnage crane, the specific working principle of which is as follows:

[0034] When using the device, move the crane to the middle position between the two loading components 4 and bring the crane boom close to one of the push plates 406. Then, start the hydraulic cylinder 405 on the other side to drive the push plate 406 connected to it to move closer to the boom. Then, use the pull rope 409 to wrap around the boom and fix it to the connecting ring 407 at the corresponding position. If the crane is small, start the motor 404 on the top of the mounting cover 2. The output end of the motor 404 drives the lead screw 401 to rotate. The lead screw 401 can then drive the mounting seat 403 connected to it to move along the limit rod 402. The mounting seat 403 drives the hydraulic cylinder 405 to move synchronously, which helps to improve the adaptability of the device.

[0035] During testing, one hydraulic cylinder 405 in the retracted state is extended, and the extended hydraulic cylinder 405 retracts. The extended hydraulic cylinder 405 pushes the boom through the push plate 406 at its end, while the retracted hydraulic cylinder 405 pulls the boom through the push plate 406 at its end and the pull rope 409. The two work together to exert force, which can prevent excessive stress on a single piece of equipment. Furthermore, even if the crane is overloaded and accidentally tipped over, the push plate 406 can bear the impact, preventing damage. The reaction force generated during the test acts on the mounting base 403 through the hydraulic cylinder 405, and then is transmitted to the mounting cover 2. The support plates 304 and 305 in the direction of force on the mounting cover 2 can support both sides, making the stress distribution wider and further preventing stress concentration. The auxiliary support plates 306 on the sides of the support plates 304 and 305 can further increase the connection area and tensile capacity, which can further improve the support effect of the support assembly 3.

[0036] 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 of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large-tonnage crane side loading device comprising a ground level (1) and two mounting housings (2), characterized in that: The openings of the two mounting covers (2) are positioned close to each other, and both mounting covers (2) are located directly above the ground level (1). Two support components (3) are fixedly installed inside the ground level (1), and both support components (3) are located outside the mounting covers (2). A vertically arranged casting groove is provided inside the ground level (1). The support component (3) includes a base (301) cast inside the casting groove. Several pre-embedded screws (302) are pre-embedded inside the base (301) at equal intervals. (302) The outer sliding sleeve is fitted with the same base plate (303), and the threaded parts of several pre-embedded screws (302) are all threadedly connected to a nut, and the nuts are all in contact with the upper surface of the base plate (303). The mounting cover (2) is fixedly connected to the middle position of the top outer wall of the base plate (303). Two vertically arranged support plates (305) are fixedly connected to one side of the outer wall of the opening of the mounting cover (2), and several vertically arranged support plates (304) are fixedly connected to the other side of the outer wall away from the opening of the mounting cover (2).

2. The lateral loading device for a large-tonnage crane according to claim 1, characterized in that: Several support plates (304) are fixedly connected to several vertically arranged auxiliary support plates (306), and two support plates (305) are also fixedly connected to a vertically arranged support plate (305) on the outer wall of the side away from each other.

3. The lateral loading device for a large-tonnage crane according to claim 1, characterized in that: The ground layer (1) has several connecting bars (307) pre-embedded inside, and the connecting bars (307) all extend into the pouring groove of the ground layer (1).

4. The lateral loading device for a large-tonnage crane according to claim 1, characterized in that: The mounting cover (2) is equipped with a loading component (4). The loading component (4) includes a lead screw (401) rotatably connected inside the mounting cover (2). The mounting cover (2) is fixedly connected with two vertically arranged limiting rods (402), and the lead screw (401) and the two limiting rods (402) are both vertically arranged. The lead screw (401) is externally threaded with a mounting seat (403), and the mounting seat (403) is slidably connected to the outside of the two limiting rods (402). The mounting cover (2) is provided with a T-shaped vertical groove, and the mounting seat (403) is slidably connected inside the T-shaped vertical groove. The top outer wall of the mounting cover (2) is fixedly installed with a motor (404), and the output end of the motor (404) is coaxially fixed with one end of the top of the lead screw (401).

5. A lateral loading device for a large-tonnage crane according to claim 4, characterized in that: A horizontally arranged hydraulic cylinder (405) is fixedly installed on the outer wall of the mounting base (403) away from the mounting cover (2). A vertically arranged push plate (406) is fixedly connected to the output end of the hydraulic cylinder (405). A connecting ring (407) is fixedly connected to the top and bottom outer walls of the push plate (406). A ram's horn hook (408) is snapped onto the outside of each of the two connecting rings (407). The two ram's horn hooks (408) are fixedly connected to the same pull rope (409).

6. The lateral loading device for a large-tonnage crane according to claim 1, characterized in that: The base plate (303), support plate one (304), support plate two (305), auxiliary support plate (306) and mounting cover (2) are all made of high-strength low-alloy steel.

7. A lateral loading device for a large-tonnage crane according to claim 4, characterized in that: The thread helix angle of the lead screw (401) is less than the equivalent friction angle.

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