Lifting equipment strength test device

Abstract

The utility model belongs to the technical field of strength detection of equipment, and particularly relates to a lifting equipment strength testing device. Comprising a labor-saving assembly, a force application rope and a counterweight rope, and the labor-saving assembly is arranged above tested equipment; one end of the counterweight rope is connected with the counterweight block, and the other end of the counterweight rope provides pulling force for the force application rope through the labor-saving assembly, so that the pulling force of the force application rope on the tested equipment is greater than the gravity of the counterweight block; the tail end of the force application rope is connected with tested equipment; and the counterweight rope and the force application rope are vertically arranged. According to the utility model, the force application direction is changed through the labor-saving assembly, so that the space occupied by the equipment is reduced, and the tension of the force application rope on the equipment to be tested is greater than the gravity of the balancing weight; and therefore, the number and the weight of the used balancing weights can be reduced, the labor intensity of testers is reduced, and the strength test convenience is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of strength detection of equipment, and in particular relates to a lifting equipment strength testing device. Background Art

[0002] Many devices are equipped with handles to facilitate the transfer and use of the device. When the device is carried by the handle, the handle bears the entire weight of the device, which requires the strength of the handle to meet certain requirements. Especially for medical devices that need to be carried at any time, the frequency of use is high and the use environment has high safety requirements. Therefore, the strength of the handle is very important for the device. For such equipment, it is necessary to conduct a handle strength test to detect whether the handle's ability to withstand a fixed load meets the requirements.

[0003] The requirements of the handle strength test are to position the force at the center of the handle, and the force applied is not less than 4 times the weight of the equipment. The force is maintained for a certain period of time and then stopped. The test results are determined based on the deformation or damage of the handle. In the existing handle strength test, a counterweight block equivalent to 3 times the weight of the equipment itself is usually placed inside or on the top of the equipment under test. The tester then holds the handle to lift the equipment and holds it for 1 minute. This test method is relatively laborious and requires a high level of physical strength from the tester. If the equipment is heavy, the test lifting is more difficult, and a fixed counterweight block position needs to be set on the equipment.

[0004] Prior art CN204461723U discloses a handle strength detection device, including a steel wire, a saw blade, a weight, a buckle, a weight and a handle, wherein the frame is fixed on the ground by screws, the fixture is fixed on the frame by screws, an adjusting rod is arranged on one side of the fixture, the oil saw is placed on the frame, a handle and a saw blade are arranged on the oil saw in an integrated manner, the saw blade is fixed by the fixture, the pulley is fixed on the frame by screws, a test clamp is installed on the handle, one end of the steel wire is connected to the test clamp on the handle by a buckle, and the other end of the steel wire is connected to the weight after passing through the pulley, the frame material is stainless steel metal, which is light and durable, the saw blade is fixed by the fixture, and the handle strength can be detected conveniently, the adjusting rod can put the saw blade in or out of the fixture, and the weight is placed on the weight. The device has a simple structure, but because the force is applied in the horizontal direction, more counterweights are used, and the operation is inconvenient. Utility Model Content

[0005] In order to solve the above technical problems existing in the prior art, the utility model provides a lifting equipment strength testing device.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A lifting equipment strength test device comprises a labor-saving component, a force rope and a counterweight rope, wherein the labor-saving component is arranged above the equipment under test; one end of the counterweight rope is connected to a counterweight block, and the other end of the counterweight rope provides tension to the force rope through the labor-saving component, so that the tension of the force rope on the equipment under test is greater than the gravity of the counterweight block; the end of the force rope is connected to the equipment under test.

[0008] Furthermore, the labor-saving component includes a movable pulley and a fixed pulley, the fixed pulley is connected to a fixed plane above, the counterweight rope passes around the fixed pulley and the movable pulley in sequence and is connected to the fixed plane; the force rope is connected to the movable pulley.

[0009] Furthermore, a blocking member is provided on the counterweight rope between the movable pulley and the fixed pulley.

[0010] Furthermore, a locking structure is provided on the blocking member.

[0011] Furthermore, the fixed pulley has a damping function, and / or the movable pulley has a damping function.

[0012] Furthermore, the labor-saving component is a hand chain hoist, which is connected to a fixed plane above. The hand chain hoist has a lower hook and a hoist assembly and a chain wound around the hoist assembly. The lower hook is connected to the counterweight rope, and the chain wound around the hoist assembly is connected to the force rope.

[0013] Furthermore, a tension sensor is arranged on the force application rope.

[0014] Furthermore, the lifting equipment strength test device also includes a strap, which is used to tie up the equipment under test, and both ends of the strap are connected to anchor points set on the ground.

[0015] Furthermore, the anchoring points are arranged in multiple rows, and each row includes a plurality of anchoring points.

[0016] Furthermore, the lifting equipment strength testing device also includes a metal rod, which is arranged above the device under test and fixes the device under test to the ground.

[0017] Furthermore, the end of the counterweight rope is connected to a counterweight basket, and a counterweight block is placed in the counterweight basket.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The lifting equipment strength testing device provided by the utility model realizes the change of the force direction through the labor-saving component, which not only reduces the space occupied by the equipment, but also makes the pulling force of the force rope on the equipment under test greater than the gravity of the counterweight block; thereby, the number and weight of the counterweight blocks used can be reduced, the labor intensity of the testers is reduced, and the convenience of the strength test is improved.

[0020] The utility model provides a blocking member between the movable pulley and the fixed pulley, or adopts a pulley with a damping function, thereby preventing the counterweight from suddenly falling when the force rope suddenly breaks, thereby avoiding the occurrence of dangerous accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of Example 1 of the utility model.

[0022] Figure 2 This is a schematic diagram of the structure of Example 2 of the utility model.

[0023] Description of reference numerals:

[0024] 1. Equipment under test, 2. Force rope, 3. Counterweight rope, 4. Movable pulley, 5. Fixed pulley, 6. Fixed plane, 7. Blocking piece, 8. Tension sensor, 9. Processor, 10. Indicator light, 11. Binding strap, 12. Anchor point, 13. Counterweight basket, 14. Hand hoist. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be clearly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are not all embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without making creative work are within the protection scope of the utility model.

[0026] It should be noted that, unless otherwise specifically stated, the relative arrangements of components and steps, and numerical expressions set forth in these embodiments should not be construed as limiting the scope of the present invention.

[0027] The following description of the exemplary embodiments is merely illustrative and does not in any sense limit the present invention and its application or use. The techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail here, but in the case of applying these techniques, methods and devices, these techniques, methods and devices should be regarded as part of this specification.

[0028] Example 1

[0029] This embodiment provides a lifting equipment strength test device, such as Figure 1As shown, there is a handle on the top of the device under test 1, and the device under test 1 is placed on the ground. The lifting equipment strength test device includes a labor-saving component, a force rope 2 and a counterweight rope 3; the labor-saving component includes a movable pulley 4 and a fixed pulley 5, and the fixed pulley 5 is connected to a fixed plane 6 above, and the fixed plane 6 can be a roof or other plane. The counterweight rope 3 is connected to the fixed plane 6 after passing through the fixed pulley 5 and the movable pulley 4 in sequence; one end of the counterweight rope 3 is connected to the counterweight basket 13, and a counterweight block is placed in the counterweight basket 13. The other end of the counterweight rope 3 provides tension to the force rope 2 through the labor-saving component, so that the tension of the force rope 2 on the device under test 1 is greater than the gravity of the counterweight block; the force rope 2 is connected to the movable pulley 4, and the end of the force rope 2 is connected to the device under test 1; the counterweight rope 3 and the force rope 2 are both arranged vertically.

[0030] The counterweight rope 3 is wound around the fixed pulley 5 and the movable pulley 4, so that the force applied to the force rope 2 is twice the total amount of the counterweight block. The weight of the counterweight block is reduced by half, reducing the labor intensity of the tester in placing the counterweight block. In addition, the counterweight block is designed to be a plurality of counterweight blocks of different weights, which makes it more convenient to place the counterweight block and is also more conducive to the adjustment of the force.

[0031] In order to improve the safety of the device, a blocking member 7 is provided on the counterweight rope 3 between the movable pulley 4 and the fixed pulley 5. If the handle is damaged or broken or the force rope is broken during the test, the counterweight will fall with the rise of the movable pulley 4. Due to the setting of the blocking member 7, the blocking member 7 can reduce the rise of the movable pulley 4, thereby preventing the counterweight from falling to the ground and causing an accident.

[0032] In addition, a locking structure can be provided on the blocking member 7 to fix the blocking member 7 to the counterweight rope 3. The locking structure can be achieved by opening a radial hole on the blocking member 7, providing an internal thread in the hole, and fixing the blocking member by tightening the counterweight rope 3 with a screw.

[0033] In addition, the fixed pulley 5 has a damping function, and / or the movable pulley 4 has a damping function. The fixed pulley and movable pulley with a damping function can replace the blocking member and slow down the descent of the counterweight.

[0034] In this embodiment, the force rope 2 and the counterweight rope 3 are both made of steel wire ropes, which have a heavy load-bearing capacity and a high structural strength.

[0035] A tension sensor 8 is provided on the force rope 2, and the tension sensor 8 is used to collect the tension on the force rope 2, and then collect the tension applied to the handle of the device under test. The tension sensor 8 is electrically connected to the processor 9, and the processor 9 can be suspended on the force rope 2, or placed on the ground or other places. The processor 9 can set the required test force value inside it through the computer serial port. The processor 9 can compare and judge the force value collected by the tension sensor 8 and the required test force value, and use the indicator light 10 to display different colors according to the judgment result. For example, when the collected force value does not reach the required test force value, the indicator light 10 displays yellow, and when the collected force value reaches or exceeds the required test force value, the indicator light 10 displays green; and when the collected force value reaches or exceeds the required test force value, the timing function inside the processor starts timing, and after the set time is reached, the indicator light 10 flashes or changes to other colors to remind the end of the test.

[0036] During the test, the device under test 1 needs to be fixed. In this embodiment, a strap 11 is used to fix the device under test 1, and both ends of the strap 11 are connected to anchor points 12 set on the ground. The strap 11 fixes the device under test 1 to the ground. The anchor points 12 are arranged in multiple rows, and each row includes a plurality of anchor points 12 to accommodate the fixation of devices under test of different volumes and sizes. The anchor points 12 can be arranged in the form of expansion bolts on the ground, or in the form of fixing plates installed on the ground.

[0037] In addition, a metal rod may be used to fix the device under test 1. The metal rod may be a bent C-shaped, U-shaped, arc-shaped or other shape. The lower part of the metal rod is an open structure. The metal rod is arranged above the device under test 1 and the device under test 1 is clamped between the ground and the metal rod. Both ends of the metal rod are fixed to the ground. Specifically, a fixing plate may be installed on the ground, and the fixing plate is connected to the metal rod.

[0038] Example 2

[0039] The difference between this embodiment and embodiment 1 is that the labor-saving components are different, such as Figure 2 As shown, the labor-saving component in this embodiment is a hand chain hoist 14, and the upper part of the hand chain hoist 14 is connected to a fixed plane. Specifically, the hand chain hoist 14 has an upper hook, a lower hook and a hoist assembly, the upper hook is hung on the upper fixed plane, the lower hook is connected to the force rope 2, a chain is wound between the upper hook, the lower hook and the hoist assembly, and the chain on the hoist assembly is connected to the counterweight rope 3. In this way, the force on the force rope 2 is greater than the weight of the counterweight block, achieving the purpose of labor saving. The hand chain hoist used in this embodiment is a prior art, and its specific structure is not described here.

[0040] The above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A lifting equipment strength test device, comprising a labor-saving component, a force rope and a counterweight rope, characterized in that: The labor-saving component is arranged above the device under test; one end of the counterweight rope is connected to the counterweight block, and the other end of the counterweight rope provides tension to the force rope through the labor-saving component, so that the tension of the force rope on the device under test is greater than the gravity of the counterweight block; the end of the force rope is connected to the device under test.

2. The lifting equipment strength testing device according to claim 1, characterized in that: The labor-saving component includes a movable pulley and a fixed pulley. The fixed pulley is connected to a fixed plane above. The counterweight rope passes around the fixed pulley and the movable pulley in sequence and is connected to the fixed plane. The force rope is connected to the movable pulley.

3. The lifting equipment strength testing device according to claim 2, characterized in that: A blocking member is arranged on the counterweight rope between the movable pulley and the fixed pulley.

4. The lifting equipment strength testing device according to claim 3, characterized in that: A locking structure is arranged on the blocking member.

5. The lifting equipment strength testing device according to claim 2, characterized in that: The fixed pulley has a damping function, and / or the movable pulley has a damping function.

6. The lifting equipment strength testing device according to claim 1, characterized in that: The labor-saving component is a hand chain hoist, which is connected to a fixed plane above. The hand chain hoist has a lower hook, a hoist component and a chain wound around the hoist component. The lower hook is connected to the counterweight rope, and the chain wound around the hoist component is connected to the force rope.

7. The lifting equipment strength test device according to claim 2 or 6, characterized in that: A tension sensor is arranged on the force application rope.

8. The lifting equipment strength testing device according to claim 1, characterized in that: The lifting equipment strength test device also includes a strap, which is used to bind the tested equipment, and both ends of the strap are connected to anchor points arranged on the ground.

9. The lifting equipment strength testing device according to claim 1, characterized in that: The lifting equipment strength test device also includes a metal rod, which is arranged above the device under test and fixes the device under test to the ground.

10. The lifting equipment strength testing device according to claim 1, characterized in that: The end of the counterweight rope is connected to the counterweight basket, and the counterweight block is placed in the counterweight basket.

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