Lifting point load test tool

Abstract

The utility model discloses a tool used for a lifting point load test, which comprises a base, supporting leg assemblies used for supporting and a lifting lug used for connection, the lifting lug is arranged on the base, and the supporting leg assemblies are further arranged on the base and distributed around the lifting lug. The beneficial effects of the utility model are that the base, the lifting lug and the supporting leg assembly are arranged right below the lifting lug to be tested, the corresponding supporting leg extension piece is selected for connection, the chain block with the load greater than that of the testing lifting lug is selected and connected to the lug plate of the testing lifting lug, and the lifting hook of the chain block is connected with the electronic scale and is connected with the through hole of the lifting lug below; the lifting point load test tool is lifted through the chain block, the supporting leg extension piece makes contact with the upper test lifting lug installation face, the pulling force is continuously increased till the numerical value displayed by the electronic scale reaches the load needed by the test, the lifting point load test tool replaces a balancing weight, carrying and assembling are convenient, and the safety risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of maintenance technology for mechanical equipment in hydropower stations, and in particular to a fixture for testing loads at lifting points. Background Technology

[0002] Hydropower stations now have various mechanical equipment that needs maintenance. However, this equipment is large and heavy, making it difficult to move by hand during maintenance. There is often no corresponding lifting equipment at the installation location. Therefore, it is necessary to install corresponding maintenance lifting points. After the maintenance lifting points are installed, according to national standards, corresponding load tests must be carried out and the equipment can only be put into use after passing the acceptance test. The existing technology requires the preparation of counterweights of corresponding weight for load testing. The counterweights are numerous, large in size, difficult to move, take a long time to prepare, require a lot of human resources, and are limited by the working environment, resulting in great difficulty, especially for the problem that load tests cannot be carried out on fixed lifting points installed indoors. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is: the inability to conduct load tests on fixed suspension points installed indoors.

[0004] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a fixture for lifting point load testing, which includes a base, a support leg assembly for support and a lifting lug for connection. The lifting lug is disposed on the base, and the support leg assembly is also disposed on the base and distributed around the lifting lug.

[0005] In a preferred embodiment of the fixture for testing load points described in this utility model: the base is composed of a steel plate and reinforcing ribs.

[0006] In a preferred embodiment of the fixture for lifting point load testing described in this utility model: the lifting lug is disposed at the geometric center point of the base, and the support leg assembly is symmetrically distributed with respect to the lifting lug.

[0007] In a preferred embodiment of the fixture for testing load points described in this utility model: the leg assembly includes connecting legs and leg extensions.

[0008] In a preferred embodiment of the fixture for testing load points described in this utility model: the connecting leg includes a leg body and a first connecting block disposed at the top of the leg body;

[0009] The outrigger extension includes an extension body, a second connecting block disposed at the bottom of the outrigger extension, and a third connecting block disposed at the top of the outrigger extension, wherein the first connecting block and the second connecting block cooperate with each other.

[0010] In a preferred embodiment of the fixture for testing load points described in this utility model: the cross-section of the main body of the support leg is smaller than that of the first connecting block, and the first connecting block is symmetrically provided with first connecting holes around its perimeter;

[0011] The main body of the extension component has a smaller cross-section than the second connecting block, and the second connecting block has symmetrically arranged second connecting holes around its perimeter. The first connecting hole and the second connecting hole are threaded together, and the third connecting block has symmetrically arranged third connecting holes around its perimeter.

[0012] In a preferred embodiment of the fixture for testing load points described in this utility model: when the number of the support leg extensions is one or more, the second connecting hole is also threadedly engaged with the third connecting hole.

[0013] In a preferred embodiment of the fixture for testing load points described in this utility model: the lifting lug includes a through hole, which is disposed on the main body of the lifting lug.

[0014] In a preferred embodiment of the fixture for load testing at lifting points described in this utility model: the base is made of Q345 steel plate with a length and width of 600*300mm and a thickness of 30mm.

[0015] In a preferred embodiment of the fixture for testing load points described in this utility model: the main body of the support leg and the main body of the extension are made of square steel with a length and width of 60*60mm and a thickness of 3mm;

[0016] The first connecting block, the second connecting block and the third connecting block are made of steel plates with a length and width of 100*100mm and a thickness of 5mm.

[0017] The beneficial effects of this utility model are as follows: The base, lifting lug, and support leg assembly are placed directly below the lifting lug to be tested. Appropriate support leg extensions are selected for connection. A hand-operated hoist with a load greater than that of the lifting lug is selected and connected to the lug plate of the lifting lug. The lifting hook of the hand-operated hoist is connected to the electronic scale and connected to the through hole of the lower lifting lug. The lifting point load test fixture is lifted by the hand-operated hoist. The support leg extension contacts the mounting surface of the upper lifting lug. The pulling force is continuously increased until the value displayed by the electronic scale reaches the load required for the test. This lifting point load test fixture replaces the counterweight, which is convenient for handling and assembly, and reduces safety risks. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein:

[0019] Figure 1A diagram showing the overall structure of the lifting point load test fixture is provided.

[0020] Figure 2 A side view of the fixture for the lifting point load test is shown;

[0021] Figure 3 A front view of the lifting point load test fixture is shown;

[0022] Figure 4 A top view showing the second distribution of the lifting point load test fixture is shown;

[0023] Figure 5 A diagram showing the base and connecting legs of the suspension point load test fixture is provided.

[0024] Figure 6 A partially enlarged view of the suspension outriggers is shown;

[0025] Figure 7 The diagram shows the structure of the outrigger extension.

[0026] Figure 8 A partially enlarged view of the outrigger extension is shown. Detailed Implementation

[0027] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0028] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0029] Reference Figure 1 This embodiment provides a fixture for lifting point load testing, including a base 101, a support leg assembly 102 for support, and a lifting lug 103 for connection. The lifting lug 103 is disposed on the base 101, and the support leg assembly 102 is also disposed on the base 101 and distributed around the lifting lug 103. In this embodiment, the support leg assembly 102 is welded to the base 101. The support leg assembly 102 is used to support the lifting lug mounting surface for testing after the fixture is lifted by a hand-operated hoist. Here, the lifting lug for testing is located indoors, where it is inconvenient for lifting equipment to enter. During maintenance, it is necessary to install the corresponding maintenance lifting point test lifting lug.

[0030] In use, the base 101, lifting lug 103, and outrigger assembly 102 are placed directly below the lifting lug to be tested. A hand chain hoist with a load capacity greater than that of the lifting lug is selected and connected to the lug plate. The lifting hook of the hand chain hoist is connected to the electronic scale and then to the lifting lug 103. The load test fixture is lifted by the hand chain hoist. The outrigger assembly 102 contacts the mounting surface of the upper lifting lug. The pulling force is continuously increased until the value displayed on the electronic scale reaches the load required for the test. The hand chain hoist and electronic scale are existing technologies and are not described in detail in this embodiment.

[0031] Reference Figure 1 As an optional embodiment, the base 101 is composed of a steel plate and reinforcing ribs, which are used to enhance the supporting strength of the base 101.

[0032] In use, the hand-operated hoist lifts the load test fixture at the lifting point, so that the outrigger assembly 102 contacts the upper test lifting lug mounting surface, and the pulling force is continuously increased until the value displayed on the electronic scale reaches the load required for the test. The outrigger assembly 102 is welded to the base 101, at which point the base 101 bears the pressure, and the reinforcing ribs strengthen the support strength of the base 101.

[0033] Reference Figure 1 and Figure 4 As an optional embodiment, the lug 103 is disposed at the geometric center point of the base 101, and the support leg assembly 102 is symmetrically distributed with the lug 103 as the center. This embodiment provides two distribution methods for the support leg assembly 102, one of which is distributed around the base 101, and the other of which is symmetrically arranged with the lug 103 as the center.

[0034] In use, the lifting lug 103 is set at the geometric center point of the base 101, and the support leg assembly 102 is symmetrically distributed with the lifting lug 103 as the center. Both distribution methods of the support leg assembly 102 can ensure that the hand chain hoist can lift the load test fixture and keep the support leg assembly 102 against the upper test lug mounting surface to maintain stability.

[0035] Reference Figure 2 , Figure 3 , Figures 5-8 As an optional embodiment, the support leg assembly 102 includes a connecting support leg 102a and a support leg extension 102b. The connecting support leg 102a and the support leg extension 102b are movably connected. The connecting support leg 102a is fixedly mounted on the base 101. The connecting support leg 102a and the support leg extension 102b are detachable, which facilitates transportation to a narrow indoor space for assembly.

[0036] Furthermore, the connecting leg 102a includes a leg body 102a-1 and a first connecting block 102a-2 disposed at the top of the leg body 102a-1; the leg extension 102b includes an extension body 102b-1, a second connecting block 102b-2 disposed at the bottom of the leg extension 102b and a third connecting block 102b-3 disposed at the top of the leg extension 102b. The first connecting block 102a-2 and the second connecting block 102b-2 cooperate with each other, and the connecting leg 102a and the leg extension 102b are movably connected through the cooperation of the first connecting block 102a-2 and the second connecting block 102b-2.

[0037] Furthermore, the cross-section of the outrigger body 102a-1 is smaller than that of the first connecting block 102a-2, and the first connecting block 102a-2 is symmetrically provided with first connecting holes 102a-21 around its perimeter; the cross-section of the extension body 102b-1 is smaller than that of the second connecting block 102b-2, and the second connecting block 102b-2 is symmetrically provided with second connecting holes 102b-21 around its perimeter, the first connecting hole 102a-21 and the second connecting hole 102b-21 are threaded together, and the third connecting block 102b-3 is symmetrically provided with third connecting holes 102b-31 around its perimeter.

[0038] Furthermore, when there is one or more outrigger extensions 102b, the second connecting hole 102b-21 is also threaded into the third connecting hole 102b-31.

[0039] Preferably, the lifting lug 103 includes a through hole 103a, which is disposed on the main body of the lifting lug 103.

[0040] In use, the connecting leg 102a is fixedly mounted on the base 101. The connecting leg 102a and the leg extension 102b are movably connected. The first connecting block 102a-2 and the second connecting block 102b-2 are connected by a screw and nut between the first connecting hole 102a-21 and the second connecting hole 102b-21 to achieve a threaded engagement. Especially when there is more than one leg extension 102b, the second connecting block 102b-2 and the third connecting block 102b-3 are also connected by a screw and nut between the second connecting hole 102b-21 and the third connecting hole 102b-31 to achieve a threaded engagement, thereby increasing the height of the leg assembly 102, which makes it easier to set up the hand chain hoist and electronic scale.

[0041] Reference Figures 1 to 8 As an optional embodiment, the base 101 is made of Q345 steel plate with a length and width of 600*300mm and a thickness of 30mm.

[0042] Furthermore, the main body of the outrigger 102a-1 and the main body of the extension 102b-1 are made of square steel with a length and width of 60*60mm and a thickness of 3mm; the first connecting block 102a-2, the second connecting block 102b-2 and the third connecting block 102b-3 are made of steel plate with a length and width of 100*100mm and a thickness of 5mm.

[0043] When using this system, especially to address the issue of load testing being impossible for fixed indoor lifting points, the maximum load capacity of indoor lifting points is generally within 10T. In this embodiment, the hand chain hoist used is the Feibiao brand, with a load capacity of 10t and a maximum tensile height of 12m. The electronic crane scale used has a maximum weighing capacity of 50t. The base 101 is made of Q345 steel plate with dimensions of 600*300mm and a thickness of 30mm. The main body of the support leg 102a-1 and the main body of the extension 102b-1 are made of square steel with dimensions of 60*60mm and a thickness of 3mm. The first connecting block 102a-2, the second connecting block 102b-2, and the third connecting block 102b-3 are made of steel plate with dimensions of 100*100mm and a thickness of 5mm. Typically, a 5t lifting point load test requires 150 50kg lock-shaped cast iron weights. The standard dimensions of a 50kg lock-shaped cast iron weight are typically 280mm x 180mm x The 200mm counterweight is heavy and numerous, while this device is small, easy to assemble, and especially suitable for use in indoor spaces.

[0044] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A fixture for testing load at lifting points, characterized in that: include, The base (101), the support leg assembly (102) for support, and the lugs (103) for connection, the lugs (103) being disposed on the base (101), and the support leg assembly (102) being disposed on the base (101) and distributed around the lugs (103).

2. The fixture for testing lifting point loads according to claim 1, characterized in that: The base (101) is made of steel plate and reinforcing ribs.

3. The fixture for testing lifting point loads according to claim 1, characterized in that: The lug (103) is located at the geometric center of the base (101), and the leg assembly (102) is symmetrically distributed with respect to the lug (103).

4. The fixture for testing lifting point loads according to claim 3, characterized in that: The outrigger assembly (102) includes a connecting outrigger (102a) and an outrigger extension (102b).

5. The fixture for testing lifting point loads according to claim 4, characterized in that: The connecting leg (102a) includes a leg body (102a-1) and a first connecting block (102a-2) disposed at the top of the leg body (102a-1); The outrigger extension (102b) includes an extension body (102b-1), a second connecting block (102b-2) disposed at the bottom of the outrigger extension (102b), and a third connecting block (102b-3) disposed at the top of the outrigger extension (102b). The first connecting block (102a-2) and the second connecting block (102b-2) cooperate with each other.

6. The fixture for testing lifting point loads according to claim 5, characterized in that: The cross-section of the main body of the support leg (102a-1) is smaller than that of the first connecting block (102a-2), and the first connecting block (102a-2) is symmetrically provided with first connecting holes (102a-21) around its perimeter; The cross-section of the extension body (102b-1) is smaller than that of the second connecting block (102b-2), and the second connecting block (102b-2) is symmetrically provided with second connecting holes (102b-21) around its perimeter. The first connecting hole (102a-21) is threaded into the second connecting hole (102b-21), and the third connecting block (102b-3) is symmetrically provided with third connecting holes (102b-31) around its perimeter.

7. The fixture for testing lifting point loads according to claim 6, characterized in that: When there is one or more outrigger extensions (102b), the second connecting hole (102b-21) is also threaded into the third connecting hole (102b-31).

8. The fixture for testing lifting point loads according to claim 3, characterized in that: The lifting lug (103) includes a through hole (103a), which is disposed on the main body of the lifting lug (103).

9. The fixture for testing lifting point loads according to claim 6, characterized in that: The base (101) is made of Q345 steel plate with a length and width of 600*300mm and a thickness of 30mm.

10. The fixture for testing lifting point loads according to claim 9, characterized in that: The main body of the support leg (102a-1) and the main body of the extension (102b-1) are made of square steel with a length and width of 60*60mm and a thickness of 3mm; The first connecting block (102a-2), the second connecting block (102b-2), and the third connecting block (102b-3) are made of steel plates with a length and width of 100*100mm and a thickness of 5mm.

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