CN216559778U - Full-load test equipment for hoisting tool - Google Patents

Abstract

The utility model provides full load test equipment for a hoisting tool, wherein the hoisting tool comprises a first horizontal beam, a second horizontal beam and an upright beam, and the full load test equipment comprises: a main frame configured to position the lifting tool in a test position, a first horizontal beam of the lifting tool being fixed to the main frame such that the lifting tool cannot move in a horizontal direction during a test; the force application device is arranged on the main frame and comprises a force application state and a force removal state, and in the force application state, the force application device applies a test force to the second horizontal beam; a force sensor mounted to the force applying device to detect a value of the test force applied by the force applying device; and a displacement detecting device configured to detect an initial position of the second horizontal beam in the gravity direction before the start of the test, and detect an end position of the second horizontal beam in the force-removed state to determine whether the second horizontal beam is displaced before and after the test. The test result of the test equipment is accurate, and the design allowance of the hoisting tool can be reduced.

Description

Full load test equipment for hoisting tool

Technical Field

The present invention relates to testing equipment, and in particular to full load testing equipment for lifting tools.

Background

Lifting tools are widely used for compressor assemblies. The design and calculation of the lifting tool should follow special device design and evaluation criteria. Once the lifting tool has a strength or quality defect, it may injure people around it. The strength inspection of the lifting tool is generally performed by using Finite Element Analysis (FEA), and the quality inspection of the lifting tool is also performed by using welding non-destructive inspection (NDT). The welding process changes the material properties, which lowers the material yield stress and tensile stress, but it is impossible to examine the influence of the change in the material properties caused by welding using FEA and NDT.

Currently, since the prior art test equipment for a lifting tool cannot check the influence of the change in material characteristics caused by welding, a very large design margin needs to be selected for the lifting tool to ensure safety.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention aims to provide a full load test apparatus for a hoist tool, which is capable of solving a technical problem in that the test apparatus of the related art cannot check the influence of a change in material characteristics caused by welding. Thus, there is a need to provide a full load test apparatus for checking the mass of a lifting tool based on a full load test of the most critical design conditions to reduce the design margin of the lifting tool. The utility model provides a novel full load test device for a hoisting tool, which is used for realizing the full load test of the hoisting tool. Once the lifting tool passes the test, there is no need to worry about strength issues.

According to an aspect of the utility model, there is provided a full load testing device for a lifting tool, the lifting tool to be tested comprising a first horizontal beam, a second horizontal beam and an upright beam connecting the first horizontal beam and the second horizontal beam, an object being suspended from the first horizontal beam when the lifting tool lifts the object, in particular, the full load testing device comprising:

a main frame configured to position the lifting tool in a test position in which the first horizontal beam of the lifting tool is above relative to the second horizontal beam and is fixed to the main frame such that the lifting tool is immovable in a horizontal direction relative to the main frame during testing;

the force application device is installed on the main frame and comprises a force application state and a force removal state, in the force application state, the force application device applies a testing force to the second horizontal beam downwards along the gravity direction until the testing force reaches a full-load testing force corresponding to the force applied when the hoisting tool is fully loaded, and the force removal state is a state that the testing force is removed after the force application device reaches the full-load testing force;

a force sensor mounted to the force applying device to detect a value of a test force applied by the force applying device to determine whether the test force applied by the force applying device reaches the full load test force; and

a displacement detecting device configured to detect an initial position of the second horizontal beam in the gravity direction before the start of the test and detect an end position of the second horizontal beam in the gravity direction when the force applying device is in the force-removed state, for determining whether or not the second horizontal beam is displaced before and after the test in the gravity direction, based on the initial position and the end position.

In this way, the full load test device may enable full load testing for the lifting tool, so that over-design may be avoided. Once the lifting tool passes the test, there is no need to worry about strength issues.

In an exemplary embodiment, the full load testing apparatus further comprises an extension bracket configured to be fixedly connected to and extend from a free end of the second horizontal beam of the lifting tool during testing, and to receive a test force from the force applying device to transfer the test force to the second horizontal beam during testing, wherein in the testing position the lifting tool is positioned such that a maximum moment position of the lifting tool corresponds to a force applying position of the force applying device, the maximum moment position being a position where the lifting tool is subjected to a maximum moment when lifting the object.

In this way, a moderate extension of the second horizontal beam of the lifting tool is achieved with the extension bracket, and the force-receiving part of the extension bracket can be better matched with the force sensor, so that the test force can be measured more accurately.

In an exemplary embodiment, the main frame includes:

a top portion on which a locking member for suspending and locking the lifting tool is provided, wherein the first horizontal beam of the lifting tool is provided with a locking engagement portion, the locking member being adapted to engage with the locking engagement portion to secure the first horizontal beam;

a bottom portion disposed parallel to the top portion, the force applying device being mounted on the bottom portion;

a first side post connecting one side of the top portion and one side of the bottom portion; and

a second side post connecting the other side of the top portion and the other side of the bottom portion.

In this way, the main frame is simple and robust in construction, and is easy to manufacture, reducing costs.

In an exemplary embodiment, the top part of the main frame is further provided with a guide rail, to which the locking member is mounted, by means of which the first horizontal beam of the hoisting tool can be moved in the horizontal direction and locked in a desired position in the horizontal direction before the test is started.

In this way, under the condition that the structures of the hoisting tools are different, the positions of the testing forces are also different, and the position adjustment of the hoisting tools can be realized by utilizing the guide rails so as to ensure that the positions of the testing forces are right below the force sensors, so that the full-load testing equipment can be applied to hoisting tools with various structural types.

In an exemplary embodiment, the locking member comprises a body provided on the guide rail and at least two suspension hooks provided on the body, wherein a plurality of holes are provided on the first horizontal beam of the lifting tool as the locking engagement portion, the suspension hooks being adapted to selectively engage with the plurality of holes to secure the first horizontal beam.

In this way, the locking member is simple in construction and can be fitted directly to the hole in the lifting tool, with simple operation.

In an exemplary embodiment, the top portion of the main frame includes:

a first roof rail and a second roof rail arranged parallel to each other;

a plurality of top cross members connected between the first top rail and the second top rail,

the bottom portion includes:

a first bottom longitudinal beam and a second bottom longitudinal beam arranged parallel to each other, each having a first end and a second end opposite to the first end, the first bottom longitudinal beam and the second bottom longitudinal beam forming a bottom space therebetween, the second horizontal beam extending in the bottom space when the hoist tool is positioned in the test position; and

a bottom cross member connected between a first end of said first bottom rail and a first end of said second bottom rail,

wherein the second end of the first bottom longitudinal beam and the second end of the second bottom longitudinal beam are not connected to each other to form an entrance enabling the second horizontal beam of the lifting tool to enter the bottom space.

In this way, the main frame is more reasonable and more stable in structure, and is convenient to manufacture and low in cost.

In an exemplary embodiment, a bracket device is fixedly provided on the bottom portion, the bracket device includes a first bracket disposed on the first bottom side rail and a second bracket disposed on the second bottom side rail, and the force application device is a pneumatic or hydraulic cylinder and is fixedly disposed in a space between the first bracket and the second bracket.

In this way, the bottom part can be firmly fitted with the force application means by means of the bracket means, ensuring the accuracy of the test results.

In an exemplary embodiment, the first bracket includes a first bracket bottom wall mounted on the first bottom rail, a first bracket support wall extending vertically upward from one edge of the first bracket bottom wall, and two first bracket side walls extending vertically upward from two opposing edges of the first bracket bottom wall, the two first bracket side walls being perpendicular to and connected to the first bracket support wall;

the second bracket includes a second bracket bottom wall mounted on the second bottom rail, a second bracket support wall extending vertically upward from one edge of the second bracket bottom wall, and two second bracket side walls extending vertically upward from two opposing edges of the second bracket bottom wall, the two second bracket side walls being perpendicular to and connected to the second bracket support wall; wherein the force applying device is clamped between the first and second bracket support walls.

In this way, the bottom portion can mount the force application means more firmly by means of the first bracket and the second bracket, ensuring the accuracy of the test results.

In an exemplary embodiment, the first side stud comprises two studs arranged parallel to each other and the second side stud comprises two studs arranged parallel to each other.

In this way, the first and second side uprights are structurally simple and stable.

In an exemplary embodiment, the full load testing device further comprises a display connected with the force sensor to display the value of the test force fed back by the force sensor.

In this way, the pressing force fed back by the force sensor is displayed in real time in the screen, so that the operation of an operator can be facilitated, and the precision of a test result is ensured.

In an exemplary embodiment, the object is a compressor assembly.

In this way, the full load testing device is particularly suitable for testing a lifting tool for lifting a compressor assembly.

Through the full load test equipment for the hoisting tool, at least the following beneficial technical effects can be realized.

First, using this test device, a full load test for the lifting tool can be achieved, so that over-design can be avoided. The test equipment has simple structure, so that the test equipment is easy to manufacture and reduces the cost. And the test equipment is simple to operate and has no special training for operators. The test device can be applied during all processes from design to manufacture of the lifting tool.

Second, the force sensor shows the force loaded on the lifting tool in real time, so that a full load situation can be easily handled. The change in vertical position of the elongate support before and after the test reflects the level of plastic deformation damage to the lifting tool caused by full load and the test results can be easily checked.

Third, the test apparatus can be applied to all similar lifting tools to achieve full load testing.

Drawings

The above and other features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings in which:

FIG. 1 is a schematic front view of a lifting tool to be tested;

figure 2 is a perspective view of a full load testing apparatus for a lifting tool having a lifting tool to be tested installed therein according to an exemplary embodiment of the present invention.

Figure 3 is a schematic perspective view from another angle showing the full load testing apparatus for a lifting tool shown in figure 2.

Figure 4 is a schematic cross-sectional view showing a portion of the full load testing apparatus for a lifting tool shown in figure 2 with some components removed for clarity.

Figure 5 is a schematic cross-sectional view showing a portion of the full load testing apparatus for a lifting tool shown in figure 2 with some components removed for clarity.

Wherein the reference numbers are as follows:

10. hoisting tool

11. First horizontal beam

111. Locking engagement portion

12. Second horizontal beam

121. Free end

13. Upright beam

14. Upper inclined beam

15. Lower oblique beam

20. Main frame

21. Top part

211. Locking member

2111. Body

2112. Suspension hook

212. First roof side rail

213. Second roof side rail

214. Top cross beam

215. Guide rail

22. Bottom part

221. First bottom longitudinal beam

222. Second bottom stringer

223. Bottom cross beam

224. Inlet

225. Supporting leg

23. First side column

24. Second side column

30. Extension support

40. Force application device

50. Force sensor

60. First bracket

601. First bracket bottom wall

602. First bracket supporting wall

603. First bracket side wall

70. Second bracket

701. Second bracket bottom wall

702. Second bracket supporting wall

703. Second bracket side wall

A. B, C, D, four anchor points.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by referring to the following examples. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. The description of the at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise.

Referring initially to FIG. 1, a schematic front view of a lifting tool 10 to be tested is shown. The lifting tool 10 can be used to lift a compressor assembly or other object. As can be seen in fig. 1, the lifting tool 10 comprises a first horizontal beam 11, a second horizontal beam 12 and an upright beam 13 connecting the first horizontal beam 11 and the second horizontal beam 12. Furthermore, the lifting tool 10 may also comprise an upper sloping beam 14 and a lower sloping beam 15.

In fig. 1, four positioning points A, B, C, D are shown, where positioning point a indicates the position of the first horizontal beam 11 on the right side of the figure, positioning point B indicates the position of the first horizontal beam 11 on the left side of the figure, and positioning point D is the center point. The test force will be loaded at the maximum moment position. According to fig. 1, the test force is at the position of the location point C. It is parallel to the leftmost hole at the location of location point B. Thus, in this embodiment, the test force is external to the second horizontal beam 12.

It is obvious that the construction of the lifting tool 10 in fig. 1 is only an example, and in practical applications, the solution of the present invention can be applied to lifting tools of various structures and shapes, due to the different constructions and different test force positions of the lifting tools, which will be described in detail below.

Reference is first made to fig. 2 and 3, which show a full load testing apparatus for a lifting tool according to an exemplary embodiment of the present invention from two different angles, in which a lifting tool 10 to be tested is mounted. Referring to fig. 2, the full load testing apparatus for a lifting tool mainly includes a main frame 20, an extension bracket 30, a force application device 40, a force sensor 50 (shown in fig. 4 and 5), and the like, and may further include a control unit that may establish signal connection with the force application device 40, the force sensor 50, and a displacement detection device to control a testing process, and a display (not shown) that may be connected with the control unit to display a value of a testing force fed back by the force sensor 50.

Referring to fig. 2, the main frame 20 is configured to position the hoist tool 10 in a test position in which the first horizontal beam 11 of the hoist tool 10 is above the second horizontal beam 12 and fixed to the main frame 20 such that the hoist tool 10 cannot move in a horizontal direction during testing.

Referring to fig. 2, the force applying device 40 is installed on the main frame 20 and includes a force applying state in which the force applying device 40 applies a test force to the second horizontal beam 12 via the extension bracket 30 (described in detail below) downward in a gravity direction until the test force reaches a full load test force corresponding to a force received when the hoist tool 10 is fully loaded, and a force removing state in which the test force is removed after the force applying device 40 reaches the full load test force. It should be understood that the full load of the hoist means the maximum load the hoist is allowed to withstand. The force applying means 40 may preferably be a pneumatic or hydraulic cylinder, in this embodiment the force applying means 40 is a hydraulic cylinder.

Referring to fig. 3, the extension bracket 30 is configured to be fixedly (e.g., by means of bolts or the like) connected to and extend from a free end 121 (shown in fig. 1) of the second horizontal beam 12 of the hoist tool 10 during testing, and the extension bracket 30 is configured to receive the testing force from the force application device 40 to transmit the testing force to the second horizontal beam 12 during testing, wherein in the testing position, the hoist tool 10 is positioned such that the maximum moment position of the hoist tool 10 corresponds to the force application position of the force application device 40. It will be appreciated that in some cases it may be possible to omit the extension bracket 30 and apply the test force directly to the lifting tool 10 at the appropriate location, provided that the strength of the lifting tool 10 is tested.

Referring to fig. 4, a force sensor 50 is mounted to the force application device 40 to detect the value of the test force applied by the force application device 40. The displacement detecting means (not shown) is configured to detect an initial position of the second horizontal beam 12 in the gravity direction before the start of the test, and detect an end position of the second horizontal beam 12 in the gravity direction in a state where the test force is removed after the force applying means 40 reaches the full load test force, for determining whether or not the second horizontal beam 12 is displaced before and after the test in the gravity direction, based on the initial position and the end position.

The function and structure of the various main components of the full load testing apparatus for a lifting tool has been generally described above. The specific structure of some of these components will be described in more detail below.

Referring to fig. 2 and 3, the main frame 20 mainly includes a top portion 21, a bottom portion 22, a first side pillar 23, and a second side pillar 24.

Referring to fig. 2, the top portion 21 of the main frame 20 may include: a first roof side rail 212 and a second roof side rail 213 arranged in parallel with each other; and a plurality of roof cross members 214 connected between the first roof side rail 212 and the second roof side rail 213, and further, a locking member 211 for suspending and locking the hoist tool 10 is provided on the roof portion 21. Further, referring to fig. 3, the top portion 21 may be further provided with a guide rail 215, and the guide rail 215 may be mounted using bolts or the like. The locking member 211 is mounted to the rail 215. Before the test starts, the first horizontal beam 11 of the lifting tool 10 can be moved in the horizontal direction by means of the guide rails 215 and can be locked in a desired position in the horizontal direction.

Referring to fig. 3, the locking member 211 includes a body 2111 provided on the rail 215 and two suspension hooks 2112 provided on the body 2111. The first horizontal beam 11 of the lifting tool 10 has a plurality of holes as the locking engagement portions 111, and the suspension hooks 2112 are adapted to selectively engage with the plurality of holes to fix the first horizontal beam 11.

Referring to fig. 2, the bottom portion 22 is disposed parallel to the top portion 21. The bottom section 22 comprises a first bottom longitudinal beam 221 and a second bottom longitudinal beam 222 arranged parallel to each other and comprises a bottom cross beam 223. The first bottom longitudinal beam 221 and the second bottom longitudinal beam 222 each have a first end and a second end opposite the first end, the first bottom longitudinal beam 221 and the second bottom longitudinal beam 222 forming a bottom space therebetween in which the second horizontal beam 12 extends when the hoist tool 10 is positioned in the test position. The bottom cross member 223 is connected between a first end of the first bottom longitudinal beam 221 and a first end of the second bottom longitudinal beam 222. The second end of the first bottom longitudinal beam 221 and the second end of the second bottom longitudinal beam 222 are not connected to each other to form an entrance 224 enabling the second horizontal beam 12 of the lifting tool 10 to enter the bottom space. The bottom portion 22 may be provided with legs 225 under it to support the weight of the entire main frame 20 and form a test space, but the bottom portion 22 may be designed in other forms of stand so long as the corresponding function is satisfied.

Referring to fig. 2, a first side stud 23 connects one side of the top portion 21 to one side of the bottom portion 22, and a second side stud 24 connects the other side of the top portion 21 to the other side of the bottom portion 22. The first side pillar 23 includes two pillars arranged in parallel with each other, and the second side pillar 24 also includes two pillars arranged in parallel with each other.

Still referring to fig. 2, a bracket device is fixedly provided on the bottom portion 22, the bracket device including a first bracket 60 and a second bracket 70, the first bracket 60 being disposed on the first bottom side member 221, the second bracket 70 being disposed on the second bottom side member 222, the force applying device 40 being fixedly disposed in a space between the first bracket 60 and the second bracket 70.

Referring to fig. 5, the first bracket 60 includes a first bracket bottom wall 601 mounted on the first bottom side member 221 (not shown in fig. 5, refer to fig. 2), a first bracket support wall 602 vertically extending upward from one side of the first bracket bottom wall 601, and two first bracket side walls 603 vertically extending upward from two opposite sides of the first bracket bottom wall 601, the two first bracket side walls 603 being perpendicular to and connected to the first bracket support wall 602. The second bracket 70 includes a second bracket bottom wall 701 mounted on the second bottom side member 222 (not shown in fig. 5, refer to fig. 2), a second bracket support wall 702 vertically extending upward from one edge of the second bracket bottom wall 701, and two second bracket side walls 703 vertically extending upward from two opposite edges of the second bracket bottom wall 701, the two second bracket side walls 703 being perpendicular to and connected to the second bracket support wall 702. The force applying device 40 (not shown in fig. 5, but see fig. 3 and 4) is sandwiched between the first and second bracket support walls 602 and 702.

The operation of the full load test apparatus for a hoist according to the present invention will be described.

As described above, the test force will be loaded at the maximum moment position. According to fig. 1, the test force is loaded at the location point C. Prior to testing, the lifting tool 10 is suspended in the interior space of the main frame 20 using the suspension hooks 2112, and then the locking member 211 is locked in place on the rail 215. Then, the hoist tool 10 cannot move in the X direction (see fig. 4). Marking the vertical position of the extension bracket 30. When testing, the hydraulic cylinder carrying the force sensor 50 is moved downwards. The pressing force fed back by the force sensor 50 is displayed in the screen. Once the force reaches the test force, the cylinder is stopped and moved back. The vertical position of the extension bracket 30 is checked. If the extension bracket 30 does not undergo a positional change, this means that the lifting tool 10 is not damaged by plastic deformation and therefore the strength of the lifting tool 10 is within a safe range.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (11)

1. Full load testing device for a lifting tool, the lifting tool (10) to be tested comprising a first horizontal beam (11), a second horizontal beam (12) and an upright beam (13) connecting the first horizontal beam (11) and the second horizontal beam (12), when the lifting tool lifts an object, which object is suspended from the first horizontal beam (11),

characterized in that the full load test equipment comprises:

a main frame (20) configured to position the lifting tool (10) in a test position in which the first horizontal beam (11) of the lifting tool (10) is above with respect to the second horizontal beam (12) and fixed to the main frame (20) such that the lifting tool (10) is immovable in a horizontal direction with respect to the main frame (20) during testing;

a force application device (40) mounted on the main frame (20) and including a force application state in which the force application device (40) applies a test force downward in a gravity direction to the second horizontal beam (12) until the test force reaches a full load test force corresponding to a force received when the hoist tool (10) is fully loaded, and a force removal state in which the test force is removed after the force application device (40) reaches the full load test force;

a force sensor (50), said force sensor (50) being mounted to said force applying means (40) to detect a value of a test force applied by said force applying means (40) to determine whether said test force applied by said force applying means (40) reaches said full load test force; and

a displacement detection device configured to detect an initial position of the second horizontal beam (12) in the direction of gravity before the start of the test, and detect an end position of the second horizontal beam (12) in the direction of gravity when the force application device (40) is in the force removal state, for determining whether the second horizontal beam (12) is displaced before and after the test in the direction of gravity, based on the initial position and the end position.

2. Full load testing device for a hoisting tool according to claim 1,

the full load testing device further comprising an extension bracket (30), the extension bracket (30) being configured to be fixedly connected to a free end (121) of the second horizontal beam (12) of the lifting tool (10) and to extend from the free end (121) during testing, and the extension bracket (30) being configured to receive a testing force from the force application arrangement (40) during testing for transferring the testing force to the second horizontal beam (12),

wherein in the test position the hoisting tool (10) is positioned such that a maximum moment position of the hoisting tool (10) corresponds to a force application position of the force application device (40), the maximum moment position being a position where the hoisting tool (10) is subjected to a maximum moment when hoisting the object.

3. The full load test apparatus for lifting tools according to claim 2, wherein the main frame (20) comprises:

a top part (21) on which top part (21) a locking member (211) for suspending and locking the lifting tool (10) is arranged, wherein a locking engagement portion (111) is arranged on the first horizontal beam (11) of the lifting tool (10), the locking member (211) being adapted to cooperate with the locking engagement portion (111) for fixing the first horizontal beam (11);

a bottom part (22) arranged parallel to the top part (21), the force applying means (40) being mounted on the bottom part (22);

a first side post (23), the first side post (23) connecting one side of the top portion (21) and one side of the bottom portion (22); and

a second side stud (24), the second side stud (24) connecting the other side of the top portion (21) and the other side of the bottom portion (22).

4. Full load test device for a hoisting tool according to claim 3, characterized in that the top part (21) of the main frame (20) is further provided with a guide rail (215) to which the locking member (211) is mounted, by means of which guide rail (215) the first horizontal beam (11) of the hoisting tool (10) can be moved in the horizontal direction and locked in a desired position in the horizontal direction before the test starts.

5. Full load testing device for a hoisting tool according to claim 4,

the locking member (211) comprises a body (2111) arranged on the rail (215) and at least two suspension hooks (2112) arranged on the body (2111),

wherein the first horizontal beam (11) of the lifting tool (10) is provided with a plurality of holes as the locking engagement portions (111), the suspension hooks (2112) being adapted to selectively engage with the plurality of holes to secure the first horizontal beam (11).

6. Full load testing device for lifting tools according to claim 3,

the top portion (21) of the main frame (20) comprises:

a first roof rail (212) and a second roof rail (213) arranged parallel to each other;

a plurality of roof rails (214) connected between the first roof rail (212) and the second roof rail (213),

the bottom portion (22) comprises:

-a first bottom longitudinal beam (221) and a second bottom longitudinal beam (222) arranged parallel to each other, the first bottom longitudinal beam (221) and the second bottom longitudinal beam (222) each having a first end and a second end opposite to the first end, the first bottom longitudinal beam (221) and the second bottom longitudinal beam (222) forming a bottom space therebetween in which the second horizontal beam (12) extends when the hoisting tool (10) is positioned in the test position; and

a bottom cross member (223), the bottom cross member (223) being connected between a first end of the first bottom longitudinal beam (221) and a first end of the second bottom longitudinal beam (222),

wherein the second end of the first bottom longitudinal beam (221) and the second end of the second bottom longitudinal beam (222) are not connected to each other to form an entrance (224) enabling the second horizontal beam (12) of the lifting tool (10) to enter the bottom space.

7. Full load testing device for lifting tools according to claim 6,

a bracket arrangement is fixedly provided on the bottom part (22), said bracket arrangement comprising a first bracket (60) and a second bracket (70), said first bracket (60) being arranged on said first bottom side rail (221), said second bracket (70) being arranged on said second bottom side rail (222), and said force application means (40) being a pneumatic or hydraulic cylinder and being fixedly arranged in the space between said first bracket (60) and said second bracket (70).

8. Full load testing device for a lifting tool according to claim 7,

the first bracket (60) comprises a first bracket bottom wall (601) mounted on the first bottom longitudinal beam (221), a first bracket supporting wall (602) vertically extending upward from one edge of the first bracket bottom wall (601), and two first bracket side walls (603) vertically extending upward from two opposite edges of the first bracket bottom wall (601), the two first bracket side walls (603) being perpendicular to and connected to the first bracket supporting wall (602);

the second bracket (70) comprises a second bracket bottom wall (701) mounted on the second bottom longitudinal beam (222), a second bracket support wall (702) vertically extending upward from one edge of the second bracket bottom wall (701), and two second bracket side walls (703) vertically extending upward from two opposite edges of the second bracket bottom wall (701), the two second bracket side walls (703) being perpendicular to and connected to the second bracket support wall (702);

wherein the force application device (40) is clamped between the first bracket support wall (602) and the second bracket support wall (702).

9. The full load test apparatus for a hoisting tool according to claim 3, characterized in that the first side upright (23) comprises two uprights arranged parallel to each other and the second side upright (24) comprises two uprights arranged parallel to each other.

10. The full load test device for a lifting tool according to any one of claims 1 to 9, further comprising a display connected to the force sensor (50) to display the value of the test force fed back by the force sensor (50).

11. The full load testing apparatus for a lifting tool according to any one of claims 1 to 9, wherein the object is a compressor assembly.

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