Static load loading device of crane

Abstract

The utility model belongs to the technical field of load detection, and discloses a static load loading device of a crane, which is characterized in that a through hole is arranged in a load block along the short axis direction, a pin shaft penetrates through the load block and is inserted with the load block, and limiting pieces are arranged at two ends of the pin shaft; the load blocks in the horizontal direction are prevented from displacing due to vibration or unstable factors in the hoisting process of the crane, meanwhile, the limiting grooves with the same width as the load blocks are formed in the front faces of the load blocks in the short axis direction of the load blocks, the load blocks stacked up and down can be effectively limited, and the load blocks are prevented from being damaged. The safety of a working scene and the reliability of lifting operation are improved, in addition, the space of a carrier is fully utilized, and more load blocks can be contained; and the limiting piece is arranged on the lifting rod, so that the movement of the lifting rope can be effectively limited, and the stability in the lifting process is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of load detection, in particular to a static load loading device for a crane. Background Art

[0002] A crane is a multi-action lifting machine that can lift and carry heavy objects vertically and horizontally within a certain range. It is also called an overhead crane, an overhead crane, or a crane. Common cranes include bridge cranes, tower cranes, gantry cranes, tire cranes, and crawler cranes. Among them, bridge cranes are the most widely used and most numerous type of lifting machinery. They are lifting equipment that is horizontally mounted above workshops, warehouses, and material yards to lift materials. Because its two ends are located on tall concrete columns or metal brackets, it is shaped like a bridge. The bridge of a bridge crane runs longitudinally along the tracks laid on the elevated structures on both sides, making full use of the space under the bridge to lift materials without being hindered by ground equipment.

[0003] Crane load test is an important test method used to evaluate the structure and performance of the crane. The load test should be carried out on the basis of the implementation of relevant safety measures, and should be carried out according to the procedures of no-load test, rated load test, static load test, and dynamic load test. During the static load test, the crane is loaded with a static load within its designed working range, and observations and records are made under this load. After the static load test, all parts of the crane must not have cracks, loose connections, and other problems that affect the performance and safety quality. Among them, the static load loading device of the crane is a device used to test the static load of the crane under various working conditions. It can simulate the loads under various actual working conditions to ensure that the crane operates safely and reliably within the designed working range.

[0004] Existing static load loading devices for cranes often have the following problems during use: the shaking of the load block during installation and hoisting leads to inaccurate static load test measurement data, and the load block is even prone to accidental falling, which poses a serious threat to the safety of the working scene and the reliability of crane operation. Utility Model Content

[0005] The purpose of the utility model is to provide a static load loading device for a crane, which can effectively avoid the problem of inaccurate static load test measurement data caused by the shaking of the load block during installation and lifting, thereby improving the safety of the working scene and the reliability of the lifting operation.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The static load loading device of the crane comprises a carrier and a lifting rod, wherein the lifting rod is arranged on the carrier, and the static load loading device of the crane further comprises:

[0008] Load blocks, multiple load blocks are stacked and arranged on the carrier, a through hole is arranged in the load block along its width direction, and a limiting groove is arranged on the upper surface of the load block, and the limiting groove runs through the width direction of the load block;

[0009] A pin shaft, which can be inserted into the through hole of the load block to connect multiple adjacent load blocks, and limit members are provided at both ends of the pin shaft to limit the pin shaft from being separated from the load block;

[0010] The lifting rod is provided with a limiting member, which can limit the movement of the lifting rope connected to the lifting rod.

[0011] Preferably, the limiting member is a limiting rod passed through both ends of the pin shaft or a detachable end cover installed at both ends of the pin shaft.

[0012] Preferably, the pin length is greater than the sum of the widths of at least two load blocks.

[0013] Preferably, a plurality of limit grooves are provided, and the plurality of limit grooves are spaced apart along the length direction of the load block.

[0014] Preferably, the load block is provided with lifting ears, which are arranged at both ends of the load block in the length direction.

[0015] Preferably, the limiting member is a limiting protrusion, a plurality of limiting protrusions are spaced apart along the length direction of the lifting rod, and rope grooves are provided between adjacent limiting protrusions.

[0016] Preferably, a rubber gasket or an anti-slip coating is provided in the rope groove.

[0017] Preferably, a plurality of limiting plates are arranged on the upper surface of the carrier along the circumference of the edge thereof, and the plurality of limiting plates enclose a limiting space, and the load block is confined within the limiting space.

[0018] Preferably, the carrier includes a supporting beam and a supporting base plate; a plurality of supporting beams are arranged in parallel and spaced apart, a plurality of limit plates are arranged on the upper surface of the supporting beams, a plurality of supporting base plates are arranged on the lower surface of the supporting beams, and the supporting base plate is fixedly connected to the plurality of supporting beams; a lifting rod is passed through the supporting beams.

[0019] Preferably, reinforcing ribs are provided between the supporting beams.

[0020] Beneficial effects of the utility model:

[0021] The static load loading device of the crane is provided with a through hole along the short axis direction of the load block, a pin is passed through the load block and plugged into the load block, and limiters are provided at both ends of the pin, thereby avoiding the displacement of the load block in the horizontal direction due to vibration or unstable factors during the lifting process of the crane. At the same time, a limit groove with the same width as the load block is provided on the front side of the load block along the short axis direction, which can effectively limit the stacked load blocks, improve the safety of the working scene and the reliability of the lifting operation, and fully utilize the carrier space to accommodate more load blocks; by providing a limiter on the lifting rod, the movement of the lifting rope can be effectively limited, further improving the stability of the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the static load loading device of the crane of the utility model;

[0023] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 yes Figure 1 Enlarged view of point B in the middle;

[0025] Figure 4 It is a schematic diagram of the placement of the load blocks in the utility model;

[0026] Figure 5 It is a schematic diagram of assembling the lifting rope and the carrier in the utility model.

[0027] In the figure:

[0028] 1. Load block; 2. Limiting groove; 3. Pin shaft; 4. Limiting piece; 5. Lifting rod; 6. Limiting protrusion; 7. Rope groove; 8. Lifting ear; 9. Baffle; 10. Carrier; 101. Support beam; 102. Support bottom plate; 11. Limiting plate; 12. Reinforcing rib; 13. Lifting rope. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0033] See also Figures 1 to 4As shown, the present application provides a static load loading device for a crane, comprising a carrier 10, a lifting rod 5, a load block 1, a limiting groove 2, a pin 3 and a limiting piece 4; a plurality of load blocks 1 are stacked on the carrier 10, a through hole is provided in the load block 1 along its width direction, the pin 3 can be inserted into the through hole of the load block 1 to connect a plurality of adjacent load blocks 1, limiting pieces 4 are provided at both ends of the pin 3 to limit the pin 3 from being separated from the load block 1, the pin 3 is provided so that relative displacement or looseness in the horizontal direction is not likely to occur between the load blocks 1, and the limiting piece 4 is provided to avoid the risk of the pin 3 being separated from the load block 1 during use; by connecting and limiting each load block 1, the shaking of the load block 1 during the static load test is effectively reduced, the influence of external interference factors on the static load test is reduced, and the static The accuracy of the load test; when encountering external vibration or other emergencies during the test, the load block 1 is not easy to be disconnected, which ensures the safety of the test equipment; a limit groove 2 is provided on the upper surface of the load block 1, and the limit groove 2 runs through the width direction of the load block 1; the limit groove 2 can form a locking mechanism between the stacked load blocks 1, which can ensure that the stacked load blocks 1 maintain a relatively fixed position and are not prone to accidental movement or sliding, effectively preventing the load blocks 1 from falling when stacked, preventing personal injury or equipment damage caused by the falling of the load blocks 1, and improving the stability of the overall structure; the lifting rod 5 is arranged on the carrier 10, and the lifting rod 5 is provided with a limiting member, which can limit the movement of the lifting rope 13 connected to the lifting rod 5, maintain the stability of the lifting rope 13, thereby reducing the risk of accidents. It should be noted that the height of the through hole of the load block 1 from the bottom surface of the load block 1 should be greater than the depth of the limit groove 2 to ensure that after the load blocks 1 are stacked up and down, the pin shaft 3 can be smoothly passed through the upper load block 1, so that the load blocks 1 are not easily displaced relative to each other.

[0034] like Figure 2 As shown, in some embodiments, the limiter 4 is a limiter rod provided at both ends of the pin 3. The limiter rod has a simple and stable structure, can effectively limit the movement range of the pin 3, prevent the pin 3 from being separated from the load block 1, and improve the safety and stability of the equipment. In other embodiments, the limiter rod can also be a detachable end cap installed at both ends of the pin 3. Preferably, the limiter rod and the end cap can be made of, but not limited to, a solid material such as metal or hard plastic, which can effectively extend the service life of the limiter 4.

[0035] In some embodiments, the length of the pin 3 is greater than the sum of the widths of at least two load blocks 1 , and the specific length of the pin 3 can be determined according to the number of load blocks 1 .

[0036] like Figure 4As shown, in some embodiments, a plurality of limit grooves 2 are provided, and the plurality of limit grooves 2 are spaced apart along the length direction of the load block 1, so that a plurality of load blocks 1 can be stacked on the same horizontal plane, maximizing the use of the space of the carrier 10, reducing space waste, and improving space utilization. Preferably, the plurality of limit grooves 2 are placed at the same distance along the length direction of the load block 1. Due to the same spacing distance, the load of the load block 1 is evenly distributed on the carrier 10, reducing the risk of local stress concentration, improving the accuracy of the static load test, and the stability of the static load loading device of the crane.

[0037] In some embodiments, the load block 1 is provided with lifting ears 8, which provide a point for the load block 1 to facilitate lifting, so that the load block 1 is easier to lift and move, which can improve the lifting efficiency and reduce the time and labor costs during the lifting process; the lifting ears 8 are arranged at both ends of the load block 1 in the length direction, which can effectively avoid position conflicts with the pins 3 inserted in the through holes along the width direction of the load block 1. At the same time, the lifting ears 8 are located at both ends of the load block 1, making the lifting operation more convenient, fast, stable and safe. Preferably, the connection method between the lifting ears 8 and the load block 1 can be but is not limited to welding or bolting.

[0038] like Figure 3 As shown, in some embodiments, the limiting member is a limiting protrusion 6, and a plurality of limiting protrusions 6 are arranged at intervals along the length direction of the lifting rod 5, and the lifting rope 13 is located between the limiting protrusions 6. The limiting protrusions 6 can effectively prevent the lifting rope 13 from moving on the lifting rod 5. In order to ensure the further stability of the lifting rope 13, a rope groove 7 is arranged between adjacent limiting protrusions 6. The limiting protrusions 6 cooperate with the rope groove 7 to further ensure that the lifting rope 13 will not slide on the lifting rod 5, which can effectively ensure the stability of the carrier 10 during the lifting process. Baffles 9 are also arranged at both ends of the lifting rod 5 to prevent the lifting rope 13 from being displaced or falling off due to accidental movement during the lifting process, thereby reducing the risk of accidents or incidents. Preferably, a rubber gasket or an anti-slip coating can be arranged in the rope groove 7, but is not limited to, to further increase the friction between the lifting rope 13 and the lifting rod 5, prevent the lifting rope 13 from sliding on the lifting rod 5, and better improve the stability between the lifting rope 13 and the lifting rod 5.

[0039] like Figure 1As shown, in some embodiments, a plurality of limit plates 11 are provided on the upper surface of the carrier 10 along its edge circumference, and the plurality of limit plates 11 enclose a limit space, and the load block 1 is confined in the limit space, and the limit plates 11 can effectively prevent the load block 1 from being displaced or falling off during the lifting process, thereby ensuring that the load block 1 remains stable after loading, reducing the risk of accidents, and improving the safety of lifting; wherein, no specific limitation is made to the shapes of the carrier 10, the limit space, and the load block 1; preferably, the carrier 10, the limit space, and the load block 1 are all set to a rectangular shape, based on which, the plurality of limit plates 11 include a plurality of right-angle limit plates and a plurality of plane limit plates, wherein the plurality of right-angle limit plates are set at the four corner points of the upper surface of the carrier 10, and the plurality of plane limit plates are set between two adjacent right-angle limit plates, and are arranged along the edge of the upper surface of the carrier 10, which can provide the load block 1 with the largest assembly range and make full use of the space of the carrier 10.

[0040] like Figure 1 As shown, in some embodiments, the carrier 10 includes a supporting beam 101 and a supporting base plate 102; a plurality of supporting beams 101 are arranged in parallel and spaced apart, a plurality of limit plates are provided on the upper surface of the supporting beam 101, and a plurality of supporting base plates 102 are provided on the lower surface of the supporting beam 101, so as to fix the plurality of supporting beams 101 through the supporting base plate 102; a lifting rod 5 is passed through the supporting beam 101; the fixed connection of the supporting beams 101 and the supporting base plate 102 arranged in parallel and spaced apart can increase the overall stability and bearing capacity of the carrier 10, and can also more evenly distribute the weight on the carrier 10, reduce local stress concentration, and improve the service life of the carrier 10; it should be noted here that the limiting protrusion 6 and the rope groove 7 are located at the part of the lifting rod 5 protruding from the outermost supporting beam 101, so as to facilitate hoisting and avoid interference between the hoisting rope 13 and the load block 1 during hoisting; preferably, the supporting beam 101 adopts an I-beam.

[0041] In some embodiments, reinforcing ribs 12 are provided between the support beams 101, which can add additional support between the support beams 101, improve the strength of the support beams 101, reduce the deflection and deformation of the support beams 101 when bearing loads, improve the strength and stability of the carrier 10, and reduce the risk of structural deformation or damage.

[0042] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A static load loading device for a crane, comprising a carrier (10) and a lifting rod (5), wherein the lifting rod (5) is arranged on the carrier (10), characterized in that: The crane static load loading device also includes: A load block (1), wherein a plurality of the load blocks (1) are stacked and arranged on the carrier (10), wherein a through hole is arranged inside the load block (1) along its width direction, and a limiting groove (2) is arranged on the upper surface of the load block (1), and the limiting groove (2) passes through the width direction of the load block (1); A pin shaft (3), the pin shaft (3) being insertable into the through hole of the load block (1) so as to connect a plurality of adjacent load blocks (1), and limit members (4) being arranged at both ends of the pin shaft (3) so as to limit the pin shaft (3) from being separated from the load block (1); The lifting rod (5) is provided with a limiting member, and the limiting member can limit the movement of a lifting rope (13) connected to the lifting rod (5).

2. The static load loading device of a crane according to claim 1, characterized in that: The limiting member (4) is a limiting rod passed through the two ends of the pin shaft (3) or a detachable end cover installed at the two ends of the pin shaft (3).

3. The static load loading device of a crane according to claim 1, characterized in that: The length of the pin shaft (3) is at least greater than the sum of the widths of the two load blocks (1).

4. The static load loading device for a crane according to claim 1, characterized in that: A plurality of the limiting grooves (2) are provided, and the plurality of limiting grooves (2) are arranged at intervals along the length direction of the load block (1).

5. The static load loading device for a crane according to claim 1, characterized in that: The load block (1) is provided with lifting ears (8), and the lifting ears (8) are arranged at both ends of the load block (1) in the length direction.

6. The static load loading device for a crane according to claim 1, characterized in that: The limiting member is a limiting protrusion (6), a plurality of the limiting protrusions (6) are spaced apart along the length direction of the lifting rod (5), and rope grooves (7) are provided between adjacent limiting protrusions (6).

7. The static load loading device for a crane according to claim 6, characterized in that: A rubber gasket or an anti-slip coating is arranged in the rope groove (7).

8. The static load loading device for a crane according to any one of claims 1 to 7, characterized in that: The upper surface of the carrier (10) is provided with a plurality of limiting plates (11) along the circumference of its edge, and the plurality of limiting plates (11) enclose a limiting space, and the load block (1) is confined within the limiting space.

9. The static load loading device for a crane according to claim 8, characterized in that: The carrier (10) comprises a supporting beam (101) and a supporting base plate (102); a plurality of the supporting beams (101) are arranged in parallel and spaced apart, a plurality of the limiting plates (11) are arranged on the upper surface of the supporting beam (101), a plurality of the supporting base plates (102) are arranged on the lower surface of the supporting beam (101), and the supporting base plate (102) is fixedly connected to the plurality of the supporting beams (101); the lifting rod (5) is passed through the supporting beam (101).

10. The static load loading device for a crane according to claim 9, characterized in that: Reinforcement ribs (12) are arranged between the supporting cross beams (101).

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