Lifting auxiliary equipment test tooling and test methods

Abstract

The present invention belongs to the technical field of engineering machinery, and discloses a test tool and a test method for lifting auxiliary equipment. The test tool for lifting auxiliary equipment includes a test bench, a lifting mechanism and a connecting mechanism. The lifting mechanism is arranged at the upper end of the test bench. The connecting mechanism includes a lower connecting component and an upper connecting component, the upper connecting component is used to install the lifting auxiliary equipment, the lower connecting component is connected to the lower end of the test bench, the lifting auxiliary equipment is installed on the upper connecting component, and the output end of the lifting mechanism is connected to the lifting auxiliary equipment; the connection position of the upper connecting component relative to the lower connecting component can be adjusted so that the upper connecting component can keep the lifting auxiliary equipment in a vertical posture or an inclined posture, so that the lifting auxiliary equipment can keep a vertical posture for lifting, or keep an inclined posture for lifting. The lower connecting component is connected to the lower end of the test bench, so that the lifting auxiliary equipment can simulate the scene of hooking a heavy object, so as to realize the performance test of the lifting auxiliary equipment in a vertical posture or an inclined posture.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a test fixture and a test method for a lifting auxiliary device. Background Art

[0002] Among construction machinery, telescopic forklifts can perform both lifting and fork loading functions. Compared with other construction machinery, telescopic forklifts are more adaptable to narrow sites.

[0003] When a telescopic forklift is used to perform the lifting function, it is generally necessary to be equipped with lifting equipment, and the lifting equipment must meet performance requirements. In the prior art, the performance test of the lifting equipment is generally performed by directly installing it on the telescopic forklift and using the lifting equipment to actually lift the test object to observe whether the lifting equipment is deformed or even broken. The test method of the lifting equipment does not provide comprehensive test data for the lifting equipment, cannot fully reflect the performance of the lifting equipment, and is inconvenient to operate in practice. Summary of the invention

[0004] The first purpose of the present invention is to provide a lifting aid testing tool, which enables the lifting aid to maintain a tilted posture or a tilted posture for performance testing, simulates the actual state of lifting using the lifting aid, improves the reliability and accuracy of the test, and is easy to operate.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] Lifting auxiliary equipment test tooling, including:

[0007] Test bench;

[0008] A lifting mechanism connected to the upper end of the test bench, wherein the output end of the lifting mechanism is used to be connected to a lifting auxiliary device;

[0009] A connecting mechanism, comprising a lower connecting assembly and an upper connecting assembly, wherein the lower connecting assembly is connected to the lower end of the test bench, the upper connecting assembly is connected to the lower connecting assembly, and the upper connecting assembly is used to install the lifting aid;

[0010] The connection position of the upper connection assembly relative to the lower connection assembly can be adjusted to adjust the lifting posture of the lifting aid, and the lifting posture includes a vertical posture and an inclined posture.

[0011] As an optional solution for the lifting auxiliary tool test fixture, the lower connecting assembly includes two lower connecting bodies spaced apart along the first direction, the lower part of the lower connecting body is connected to the lower end of the test bench, and the upper part of the lower connecting body is provided with a plurality of lower connecting holes;

[0012] The upper connection assembly comprises an upper connection body, and both end surfaces of the upper connection body along the first direction are provided with a plurality of upper connection holes;

[0013] The upper connecting body is arranged between the two lower connecting bodies, and when the lifting aid is in the vertical posture, the axis of a part of the plurality of lower connecting holes can coincide with the axis of a part of the plurality of upper connecting holes, and when the lifting aid is in the inclined posture, the axis of another part of the plurality of lower connecting holes can coincide with the axis of another part of the plurality of upper connecting holes;

[0014] The connection mechanism also includes a fastener, which can be inserted into the upper connection hole and the lower connection hole whose axes coincide with each other.

[0015] As an optional solution for the lifting auxiliary equipment test tooling, the lower connecting body includes a lower connecting horizontal plate and a lower connecting vertical plate connected to each other, the lower connecting horizontal plate is connected to the lower end of the test bench, and the lower connecting vertical plate is provided with a plurality of the lower connecting holes.

[0016] As an optional solution for the lifting auxiliary tool test fixture, the lower connecting assembly also includes a clamping block connected to the lower connecting body;

[0017] The end surface of the lower end of the test bench is provided with a clamping groove, and the clamping block is clamped in the clamping groove.

[0018] As an optional solution for the lifting auxiliary tool test fixture, the clamping grooves are arranged in a plurality of intervals along the first direction and all extend along the second direction, and the clamping block connected to each of the lower connectors can select at least one of the clamping grooves for clamping;

[0019] The first direction and the second direction are perpendicular to each other.

[0020] As an optional solution of the lifting aid test tool, the lifting aid includes a main body and a sleeve arranged on the main body, and a first pin hole is opened on the main body;

[0021] The upper connecting assembly also includes a latch, a second pin hole is provided at the upper portion of the upper connecting body, a hook is provided at the lower portion of the upper connecting body, the latch is inserted into the first pin hole and the second pin hole, and the hook is hung on the sleeve.

[0022] As an optional solution for the lifting auxiliary equipment testing tool, the upper connecting assembly also includes a limiting body fixedly arranged on the two outer end surfaces of the upper connecting body along the first direction, and the main body can abut against the limiting body.

[0023] As an optional solution for the lifting auxiliary tool test tool, the latch is provided with a limit plate, and the limit plate is provided with a third pin hole;

[0024] The upper connecting component also includes a pin shaft and a bayonet pin. The pin shaft is arranged on the limiting body and can be inserted into the third pin hole. The bayonet pin is arranged on the pin shaft to prevent the pin shaft from slipping out of the third pin hole.

[0025] As an optional solution for the lifting aid test tool, the lifting mechanism includes a hand chain hoist and a dynamometer. The hand chain hoist is connected to the upper end of the test bench. The dynamometer is arranged between the lifting aid and the output end of the hand chain hoist. The dynamometer is used to measure the tension of the hand chain hoist.

[0026] The second object of the present invention is to provide a method for testing a lifting aid, so that the lifting aid can be subjected to tensile tests of different loads in different postures, thereby meeting the testing requirements and making the test data more comprehensive.

[0027] To achieve this object, the present invention adopts the following technical solutions:

[0028] The hoisting aid test method is applied to the hoisting aid test tooling described in any of the above schemes, and the hoisting aid test method comprises the following steps:

[0029] S1, controlling the lifting mechanism to lift the lifting aid according to a first preset condition, wherein the first preset condition includes that the lifting pulling force is set to a first set value and the lifting aid is in a vertical posture;

[0030] S2, judging whether the lifting aid meets the preset requirements under the first preset conditions, if yes, the lifting aid is qualified, if no, proceeding to the next step;

[0031] S3, controlling the lifting mechanism to lift the lifting aid according to a second preset condition, wherein the second preset condition includes that the lifting pulling force is set to a second set value and the lifting aid is in an inclined posture;

[0032] S4, judging whether the lifting aid meets the preset requirements under the second preset conditions, if yes, the lifting aid is qualified, if no, the lifting aid is unqualified.

[0033] Beneficial effects of the present invention:

[0034] The present invention provides a lifting aid test tool, which adjusts the connection positions of the upper connecting assembly and the lower connecting assembly so that the lifting aid can maintain a vertical posture or an inclined posture for performance testing, simulates the actual state of lifting using the lifting aid, improves the reliability and accuracy of the test, and is easy to operate.

[0035] The present invention provides a method for testing a lifting aid. First, it is determined whether the lifting aid meets the preset requirements under the first preset condition. If so, the lifting aid is deemed qualified. If not, it is determined whether the lifting aid meets the preset requirements under the second preset condition. If so, the lifting aid is also deemed qualified. If not, the lifting aid is deemed unqualified. The method for testing a lifting aid enables the lifting aid to perform tensile tests with different loads in different postures, meets the test requirements, and makes the test data more comprehensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a lifting aid of a lifting aid test tool provided by an embodiment of the present invention in a vertical posture;

[0037] Figure 2 yes Figure 1 A magnified view of the structure at center A;

[0038] Figure 3 The structure of the lower connector and the clamping block involved in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0039] Figure 4 It is a structural schematic diagram of an upper connector, a latch and a limiter involved in an embodiment of the present invention;

[0040] Figure 5 It is a structural schematic diagram of a lifting aid of a lifting aid test tool provided by an embodiment of the present invention in a forward tilted posture of 6°;

[0041] Figure 6 yes Figure 5 A magnified view of the structure at B in the middle;

[0042] Figure 7 It is a structural schematic diagram of a lifting aid of a lifting aid test tool provided by an embodiment of the present invention in a backward tilted posture of 6°;

[0043] Figure 8 yes Figure 7 A magnified view of the structure at C in the middle;

[0044] Fig. 9 The structure of the lower connector and the clamping block involved in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0045] Fig.10 It is a structural schematic diagram of a lifting auxiliary tool involved in an embodiment of the present invention;

[0046] Fig.11 yes Figure 4 A magnified view of the structure at D in the middle;

[0047] Fig.12It is a flow chart of the lifting auxiliary equipment testing method provided in an embodiment of the present invention.

[0048] In the figure:

[0049] 100, lifting aid; 101, main body; 1011, first pin hole; 102, sleeve; 103, hook;

[0050] 1. test bench; 11. bottom plate; 111. clamping groove; 1111. opening; 12. hanger;

[0051] 2. Lifting mechanism; 21. Hand chain hoist; 22. Tension gauge; 23. U-shaped buckle;

[0052] 3. Lower connecting assembly; 31. Lower connecting body; 311. Lower connecting horizontal plate; 312. Lower connecting vertical plate; 3121. Lower connecting hole; 3121a. First lower connecting hole; 3121b. Second lower connecting hole; 3121c. Third lower connecting hole; 3121d. Fourth lower connecting hole; 3121e. Fifth lower connecting hole; 3121f. Sixth lower connecting hole; 3121g. Seventh lower connecting hole; 313. Strengthening angle plate; 32. Clamping block;

[0053] 4. Upper connection assembly; 41. Upper connection body; 411. Upper connection vertical plate; 4111. Upper connection hole; 4111a. First upper connection hole; 4111b. Second upper connection hole; 4111c. Third upper connection hole; 4111d. Fourth upper connection hole; 4111e. Fifth upper connection hole; 4111f. Sixth upper connection hole; 4111g. Seventh upper connection hole; 4112. Second pin hole; 4113. Hook; 412. Fixed bent plate; 413. Square tube; 414. Square tube connecting plate; 415. Fixed connecting plate; 416. Auxiliary reinforcing plate; 42. Pin; 421. Limiting piece; 43. Limiting body; 431. Limiting main board; 432. Limiting angle plate; 433. Limiting bent plate; 44. Pin shaft; 45. Bayonet;

[0054] 5. Fasteners. DETAILED DESCRIPTION

[0055] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar parts or parts having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0056] 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 or a detachable 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.

[0057] In the description of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being 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 the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0058] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0059] like Figure 1-Figure 11 As shown, an embodiment of the present invention provides a test fixture for a lifting aid, which includes a test bench 1, a lifting mechanism 2 and a connecting mechanism. Among them, the lifting mechanism 2 is arranged at the upper end of the test bench 1. The connecting mechanism includes a lower connecting component 3 and an upper connecting component 4, the upper connecting component 4 is used to install the lifting aid 100, the lower connecting component 3 is connected to the lower end of the test bench 1, the lifting aid 100 is installed on the upper connecting component 4, and the output end of the lifting mechanism 2 is connected to the lifting aid 100, and the lifting mechanism 2 can lift the lifting aid 100; the upper connecting component 4 is connected to the lower connecting component 3, and the connection position of the upper connecting component 4 relative to the lower connecting component 3 can be adjusted to adjust the lifting posture (including vertical posture and inclined posture) of the lifting aid 100, so that the upper connecting component 4 can make the lifting aid 100 maintain a vertical posture or an inclined posture, so that when the lifting mechanism 2 lifts the lifting aid 100, the lifting aid 100 can maintain a vertical posture for lifting, or maintain an inclined posture for lifting. When the lifting mechanism 2 is lifting, the lifting aid 100 is connected to the upper connecting component 4, and the lower connecting component 3 is connected to the lower end of the test bench 1, so that the lifting aid 100 can simulate the scenario of hooking heavy objects to achieve performance testing of the lifting aid 100 in a vertical posture or an inclined posture.

[0060] The lifting aid test tool adjusts the connection position of the upper connecting component 4 and the lower connecting component 3 so that the lifting aid 100 can maintain a vertical posture or an inclined posture for performance testing, simulating the actual state of lifting using the lifting aid 100, improving the reliability and accuracy of the test, and facilitating operation.

[0061] Optionally, the test bench 1 includes a base plate 11 and a hanger 12, the hanger 12 is fixedly arranged on the base plate 11, the lifting mechanism 2 is connected to the upper end of the hanger 12, and the lower connecting component 3 is connected to the lower end of the test bench 1 (i.e., the base plate 11). By dividing the test bench 1 into the base plate 11 and the hanger 12, and connecting the lifting mechanism 2 to the hanger 12, and connecting the lower connecting component 3 to the base plate 11, a lifting test of the lifting aid 100 is achieved.

[0062] In this embodiment, the hanger 12 can be selected as a gantry, but is not limited thereto.

[0063] Specifically, Figure 2-Figure 4 As shown, the lower connecting assembly 3 includes two lower connecting bodies 31 spaced apart along the first direction, the lower part of the lower connecting body 31 is connected to the bottom plate 11, and the upper part of the lower connecting body 31 is provided with a plurality of lower connecting holes 3121; the upper connecting assembly 4 includes an upper connecting body 41, and both end surfaces of the upper connecting body 41 along the first direction are provided with a plurality of upper connecting holes 4111; the upper connecting body 41 is arranged between the two lower connecting bodies 31, and when the lifting auxiliary device 100 is in a vertical position, a part of the plurality of lower connecting holes 3121 can be The upper connecting body 41 and the lower connecting body 31 can coincide with the axis of one part of the multiple upper connecting holes 4111. When the lifting aid 100 is in an inclined posture, another part of the multiple lower connecting holes 3121 can coincide with the axis of another part of the multiple upper connecting holes 4111. The connecting mechanism also includes a fastener 5, which can be passed through the upper connecting holes 4111 and the lower connecting holes 3121 whose axes coincide with each other, so as to fix the upper connecting body 41 and the lower connecting body 31, so that the lifting aid 100 can maintain a vertical posture or an inclined posture to achieve lifting.

[0064] For example, the tilting posture includes two postures: a forward tilt of 6° and a backward tilt of 6°.

[0065] Specifically, the plurality of lower connection holes 3121 include a first lower connection hole 3121a, a second lower connection hole 3121b, a third lower connection hole 3121c, a fourth lower connection hole 3121d, a fifth lower connection hole 3121e, a sixth lower connection hole 3121f and a seventh lower connection hole 3121g, and the plurality of upper connection holes 4111 include a first upper connection hole 4111a, a second upper connection hole 4111b, a third upper connection hole 4111c, a fourth upper connection hole 4111d, a fifth upper connection hole 4111e, a sixth upper connection hole 4111f and a seventh upper connection hole 4111g.

[0066] Refer to Figure 2 When the lifting aid 100 is in a vertical posture, the axes of the first lower connecting hole 3121a and the first upper connecting hole 4111a, the second lower connecting hole 3121b and the second upper connecting hole 4111b, the fourth lower connecting hole 3121d and the fourth upper connecting hole 4111d, the sixth lower connecting hole 3121f and the sixth upper connecting hole 4111f, and the seventh lower connecting hole 3121g and the seventh upper connecting hole 4111g all coincide and are connected by fasteners 5. When the lifting aid 100 is in a vertical posture for lifting test, the lifting tension is 3 times the maximum load that the lifting aid 100 can withstand, that is, if the maximum load designed for the lifting aid 100 is 5 tons, a load of 15 tons is required for lifting the test.

[0067] Reference Figure 5-Figure 6 When the lifting aid 100 is in a forward tilt of 6°, the axes of the first lower connecting hole 3121a and the first upper connecting hole 4111a, the third lower connecting hole 3121c and the third upper connecting hole 4111c, and the seventh lower connecting hole 3121g and the seventh upper connecting hole 4111g are coincident and connected by fasteners 5. When the lifting aid 100 is in a forward tilt of 6° for a lifting test, the lifting tension is twice the maximum load that the lifting aid 100 can withstand.

[0068] Reference Figure 7-Figure 8 When the lifting aid 100 is in a backward tilted posture of 6°, the axes of the second lower connecting hole 3121b and the second upper connecting hole 4111b, the fifth lower connecting hole 3121e and the fifth upper connecting hole 4111e, and the sixth lower connecting hole 3121f and the sixth upper connecting hole 4111f all coincide and are connected by fasteners 5. When the lifting aid 100 is in a backward tilted posture of 6° for a lifting test, the lifting tension is twice the maximum load that the lifting aid 100 can withstand.

[0069] During the above lifting test, since the lifting tension to be borne by the lifting aid 100 in a vertical posture is relatively large, in order to ensure the firmness of the connection between the lower connector 31 and the upper connector 41, the lower connector 31 and the upper connector 41 are connected by 5 sets of fasteners 5; when the lifting aid 100 is in an inclined posture, the lifting tension to be borne is relatively small, and the lower connector 31 and the upper connector 41 are connected by 3 sets of fasteners 5 to meet the test requirements. In addition, the inclined posture can also be other angles, which can be set according to actual conditions.

[0070] Optionally, the lower connection hole 3121 and the upper connection hole 4111 are both configured as through holes, and the fastener 5 is a bolt, which passes through the lower connection hole 3121 and the upper connection hole 4111 to achieve connection.

[0071] Specifically, refer to Figure 3As shown, the lower connecting body 31 includes a lower connecting transverse plate 311 and a lower connecting vertical plate 312 which are connected to each other. The lower connecting transverse plate 311 and the lower connecting vertical plate 312 can be selectively connected by welding, and the lower connecting transverse plate 311 is connected to the bottom plate 11. The lower connecting vertical plate 312 is provided with a plurality of lower connecting holes 3121. The upper connecting body 41 is provided between the two lower connecting vertical plates 312 so that the upper connecting body 41 and the two lower connecting vertical plates 312 are connected, and the structural design is more reasonable.

[0072] In order to improve the connection firmness between the lower connecting horizontal plate 311 and the lower connecting vertical plate 312, the lower connecting body 31 also includes at least two reinforcing angle plates 313. The two reinforcing angle plates 313 are spaced apart along the second direction and welded to the lower connecting horizontal plate 311 and the lower connecting vertical plate 312. This structure can ensure that the lower connecting body 31 does not deform.

[0073] In this embodiment, the first direction and the second direction are perpendicular to each other.

[0074] In order to facilitate the connection between the lower connector 31 and the bottom plate 11, as shown in FIG. Fig. 9 Combined with Figure 2 As shown, the lower connecting component 3 also includes a clamping block 32 connected to the lower connecting cross plate 311, and a clamping groove 111 is provided on the end surface of the bottom plate 11. By clamping the clamping block 32 into the clamping groove 111, the lower connecting body 31 can be connected to the bottom plate 11. By setting the clamping structure, the operation is convenient.

[0075] Optionally, the snap-in groove 111 extends along the second direction, and a plurality of snap-in grooves 111 are arranged at intervals along the first direction. The snap-in block 32 connected to each lower connecting body 31 can select at least one snap-in groove 111. This structural design can realize the position adjustment of the lower connecting body 31 along the first direction so that the lifting aid 100 can be aligned with the output end of the lifting mechanism 2.

[0076] Furthermore, two groups of snap-in blocks 32 are provided on the lower end surface of the lower connecting cross plate 311 of each lower connecting body 31, and the two groups of snap-in blocks 32 are arranged at intervals along the first direction, and each group of snap-in blocks 32 includes at least three snap-in blocks 32 arranged at intervals along the second direction, and the spacing between the two groups of snap-in blocks 32 is equal to the spacing between any two adjacent snap-in grooves 111. When the snap-in blocks 32 are snapped into the snap-in grooves 111, the two groups of snap-in blocks 32 can be snapped into two adjacent snap-in grooves 111 to make the connection more secure.

[0077] In order to facilitate the clamping block 32 to be clamped into the clamping slot 111 , the clamping slot 111 is provided with an opening 1111 , and the clamping block 32 can be clamped into the clamping slot 111 through the opening 1111 , which makes the operation more convenient.

[0078] Optionally, the snap-in block 32 is connected to the lower connecting cross plate 311 by screws. When the snap-in block 32 is snapped into the snap-in groove 111, the screws can be loosened first to facilitate the snap-in of the snap-in block 32. After the snap-in block 32 is snapped into the snap-in groove 111 and the position is adjusted, the screws can be tightened to achieve the connection.

[0079] In this embodiment, if Fig.10 As shown, the lifting aid 100 includes a main body 101, a sleeve 102 arranged on the main body 101, and a hook 103 arranged on the main body 101. The hook 103 is used to connect with the output end of the lifting mechanism 2 to achieve lifting. In addition, a first pin hole 1011 is also arranged on the main body 101; Figure 4 As shown, the upper connecting assembly 4 also includes a latch 42, a second pin hole 4112 is provided at the upper portion of the upper connecting body 41, and a hook 4113 is provided at the lower portion of the upper connecting body 41. By hooking the hook 4113 with the sleeve 102, the latch 42 is passed through the first pin hole 1011 and the second pin hole 4112, so as to realize the connection between the lifting aid 100 and the upper connecting assembly 4. When the lifting aid 100 is lifted, the hook 4113 is used to bear the main load, and the latch 42 can play the role of truly simulating the lifting condition and limiting the rotational displacement of the lifting aid 100, so as to prevent the upper connecting assembly 4 from being broken or damaged as a whole, and play the role of secondary protection to prevent safety accidents.

[0080] In order to further improve the stability of the lifting aid 100 during lifting, the upper connecting component 4 also includes a limiting body 43 fixedly arranged on the two outer end surfaces of the upper connecting body 41 along the first direction. The main body 101 of the lifting aid 100 can abut against the limiting body 43 to further limit the rotational displacement of the lifting aid 100.

[0081] Specifically, the upper connecting body 41 includes two upper connecting vertical plates 411 spaced apart along the first direction, an upper connecting hole 4111 is provided at the lower portion of the upper connecting vertical plates 411, a second pin hole 4112 is provided at the upper portion of the upper connecting vertical plates 411, and a hook 4113 is provided at the middle portion of the upper connecting vertical plates 411. Further, the upper connecting body 41 also includes a reinforcing member, which is welded and connected between the two upper connecting vertical plates 411 to make the structure of the upper connecting body 41 more stable.

[0082] Furthermore, the reinforcement includes a fixed bent plate 412, a square tube 413, a square tube connecting plate 414 and a fixed connecting plate 415, the two ends of the fixed bent plate 412 are respectively welded to the end faces facing the two upper connecting vertical plates 411 and are located on the rear side of the hook 4113, the two ends of the fixed connecting plate 415 are respectively welded to the end faces facing the two upper connecting vertical plates 411 and are located on the front side of the hook 4113, the two ends of the square tube 413 are respectively welded to the end faces facing the two upper connecting vertical plates 411 and are located on the upper side of the hook 4113, and two square tubes 413 are provided, and the two square tubes 413 are connected by a square tube connecting plate 414.

[0083] It can be understood that the position where the hook 4113 is provided on the upper connecting vertical plate 411 is a weak point. In order to strengthen the strength of the hook 4113, the upper connecting body 41 also includes an auxiliary reinforcement plate 416. The auxiliary reinforcement plate 416 is provided on the inner end surface of the upper connecting vertical plate 411, and the structure is the same as the structure at the weak position of the upper connecting vertical plate 411.

[0084] Specifically, the main body 101 includes two bending plates arranged at intervals along the first direction, the sleeve 102 is passed through the lower part of the two bending plates, and the upper part of the two bending plates is provided with a first pin hole 1011. When the lifting aid 100 is connected to the upper connecting component 4, the two upper connecting vertical plates 411 are located between the two bending plates, the pin 42 is passed through the first pin hole 1011 and the second pin hole 4112, and the two bending plates are respectively abutted against the two limiting bodies 43.

[0085] Furthermore, if Fig.11 As shown, the limiting body 43 includes a limiting main board 431 and a limiting angle plate 432. The limiting main board 431 is welded to the outer end surface of the upper connecting vertical plate 411. The two bending plates can respectively abut the two limiting main boards 431. The limiting angle plate 432 is arranged on the side of the limiting main board 431 away from the bending plate and is welded to the upper connecting vertical plate 411 and the limiting main board 431 to support the limiting main board 431 and improve the supporting stability of the limiting main board 431.

[0086] Furthermore, the limiting body 43 further includes a limiting bent plate 433, one plate of the limiting bent plate 433 is welded to the upper connecting vertical plate 411, and the other plate is welded to the limiting main plate 431, and the latch 42 sequentially passes through a limiting bent plate 433, a bent plate, an upper connecting vertical plate 411, another upper connecting vertical plate 411, another bent plate, and another limiting bent plate 433. The setting of the limiting bent plate 433 can further improve the support stability of the limiting main plate 431.

[0087] In order to prevent the latch 42 from moving, the latch 42 is provided with a limiting plate 421, and the limiting plate 421 is provided with a third pin hole; the upper connecting component 4 also includes a pin shaft 44 and a bayonet 45, the pin shaft 44 is provided on a limiting bent plate 433 and can be passed through the third pin hole, and the bayonet 45 is provided on the pin shaft 44 to prevent the pin shaft 44 from slipping out of the third pin hole, thereby preventing the latch 42 from moving.

[0088] Optionally, the side of the upper connecting vertical plate 411 facing away from the lifting auxiliary device 100 is set to be arc-shaped. By setting the upper connecting vertical plate 411 to have an arc-shaped structure, the deformation resistance of the upper connecting vertical plate 411 can be improved, and the occurrence of stress concentration points on the upper connecting vertical plate 411 can be prevented.

[0089] Optionally, both ends of the lower connecting vertical plate 312 along the second direction are configured to be arc-shaped, and the overall structure is a trapezoidal structure, which can better transmit tensile stress and avoid stress concentration.

[0090] Optionally, refer to Figure 1-Figure 2 The lifting mechanism 2 includes a hand chain hoist 21, a dynamometer 22 and a U-shaped buckle 23. The hand chain hoist 21 is connected to the hanger 12, the dynamometer 22 is connected to the output end of the hand chain hoist 21, the upper end of the U-shaped buckle 23 is connected to the dynamometer 22, and the lower end is connected to the hook 103 of the lifting auxiliary device 100. The lifting operation is performed by the hand chain hoist 21, and the dynamometer 22 can display the lifting tension in real time. When the dynamometer 22 reaches the required load tension, the lifting is stopped and the lifting auxiliary device 100 is observed to see if it is deformed. The structure can observe the stress condition of the lifting auxiliary device 100 in real time by setting the dynamometer 22, and the test is more accurate.

[0091] It should be explained that the vertical posture means that the hook 103 of the lifting aid 100 is perpendicular to the end surface of the main body 101 on which the hook 103 is installed, and the inclined state means that the hook 103 of the lifting aid 100 and the end surface of the main body 101 on which the hook 103 is installed form an angle other than 90°.

[0092] like Fig.12 As shown, this embodiment also provides a lifting aid testing method, which is applied to a lifting aid testing tool. The lifting aid testing method includes:

[0093] S1, controlling the lifting mechanism 2 to lift the lifting device 100 according to a first preset condition, wherein the first preset condition includes that the lifting pulling force is set to a first set value (ie, 3 times of the maximum load of the lifting device 100) and the lifting device 100 is in a vertical posture.

[0094] S2, judging whether the lifting aid 100 meets the preset requirement under the first preset condition (the preset requirement is that the lifting aid 100 has no obvious deformation or damage), if so, the lifting aid 100 is deemed qualified, if not, proceeding to the next step.

[0095] S3, controlling the lifting mechanism 2 to lift the lifting aid 100 according to a second preset condition, wherein the second preset condition includes that the lifting pulling force is set to a second set value (i.e., twice the maximum load of the lifting aid 100) and the lifting aid 100 is in an inclined posture;

[0096] S4, judging whether the lifting aid 100 meets the preset requirement under the second preset condition, if so, the lifting aid 100 is qualified, if not, the lifting aid 100 is unqualified.

[0097] It should be noted that the lifting aid 100 lifted according to the second preset condition in step S3 and the lifting aid 100 in step S1 are all brand new lifting aids 100 from the same batch.

[0098] The lifting aid 100 in step S3 is in an inclined posture including a forward tilt of 6° and a backward tilt of 6°. Therefore, step S4 is specifically as follows: first lift the lifting aid 100 in a forward tilt of 6°, and determine whether it meets the preset requirements. If so, it is determined that the lifting aid 100 has passed the forward tilt of 6° test, and then perform a test of lifting the lifting aid 100 in a backward tilt of 6°, and then determine whether it meets the preset requirements again. If not, it is determined that the lifting aid 100 is unqualified. If so, it is determined that the lifting aid 100 is qualified. The above tests of the forward tilt of 6° and the backward tilt of 6° are not in order, and the backward tilt of 6° test can also be performed first. Only when both the forward tilt of 6° and the backward tilt of 6° tests are met can the lifting aid 100 be determined to be qualified.

[0099] The hoisting aid testing method first determines whether the hoisting aid 100 meets the preset requirements under the first preset condition. If so, the hoisting aid 100 is deemed qualified. If not, it is determined whether the hoisting aid 100 meets the preset requirements under the second preset condition. If so, the hoisting aid 100 is also deemed qualified. If not, the hoisting aid 100 is deemed unqualified. The hoisting aid testing method enables the hoisting aid 100 to perform tensile tests with different loads in different postures, meets the test requirements, and makes the test data more comprehensive.

[0100] The test process is as follows: first, keep the lifting aid 100 in a vertical position, and the staff operates the hand chain hoist 21 to lift the hook 103 upwards. When the tension displayed by the tension meter 22 is 3 times the maximum load of the lifting aid 100, stop operating the hand chain hoist 21, and observe whether the lifting aid 100 is deformed or damaged. If not, the lifting aid 100 is qualified. If deformed or damaged, the lifting aid 100 is unqualified.

[0101] Then, another brand new lifting aid 100 is kept in a forward tilted posture of 6°, and the staff operates the hand chain hoist 21 to lift the hook 103 upwards. When the tension displayed by the tension meter 22 is twice the load of the maximum load of the lifting aid 100, the staff stops operating the hand chain hoist 21 and observes whether the lifting aid 100 is deformed or damaged. If not, the lifting aid 100 is qualified in the forward tilted posture test of 6°. If deformed or damaged, the lifting aid 100 is unqualified.

[0102] Finally, the lifting aid 100 that has been tested with a forward tilt of 6° is tested with a backward tilt of 6°. The staff operates the hand chain hoist 21 to lift the hook 103 upwards. When the tension displayed by the dynamometer 22 is twice the maximum load of the lifting aid 100, the staff stops operating the hand chain hoist 21 and observes whether the lifting aid 100 is deformed or damaged. If not, the lifting aid 100 is qualified. If deformed or damaged, the lifting aid 100 is unqualified.

[0103] In the above test process, as long as the lifting aid 100 can meet one of the above vertical posture test or tilted posture test (both the forward 6° posture test and the backward 6° posture test are qualified), the lifting aid 100 can be considered qualified. If the lifting aid 100 can meet the vertical posture test, the lifting aid 100 can be identified as a superior product; if the lifting aid 100 does not meet the vertical posture test, but can meet the tilted posture test, the lifting aid 100 can be identified as a qualified product that is inferior to the superior product.

[0104] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The lifting aid test tool is characterized by: include: Test bench (1); A lifting mechanism (2) connected to the upper end of the test bench (1), wherein an output end of the lifting mechanism (2) is used to be connected to a lifting auxiliary tool (100); A connecting mechanism, comprising a lower connecting assembly (3) and an upper connecting assembly (4), wherein the lower connecting assembly (3) is connected to the lower end of the test bench (1), the upper connecting assembly (4) is connected to the lower connecting assembly (3), and the upper connecting assembly (4) is used to install the lifting auxiliary tool (100); The connection position of the upper connection component (4) relative to the lower connection component (3) can be adjusted to adjust the lifting posture of the lifting auxiliary device (100), and the lifting posture includes a vertical posture and an inclined posture; The lower connection assembly (3) comprises two lower connection bodies (31) spaced apart along a first direction, the lower part of the lower connection body (31) being connected to the lower end of the test bench (1), and the upper part of the lower connection body (31) being provided with a plurality of lower connection holes (3121); The upper connection assembly (4) comprises an upper connection body (41), and both end surfaces of the upper connection body (41) along the first direction are provided with a plurality of upper connection holes (4111); The upper connecting body (41) is arranged between the two lower connecting bodies (31); when the lifting aid (100) is in the vertical posture, a part of the plurality of lower connecting holes (3121) can coincide with a part of the axis of the plurality of upper connecting holes (4111); when the lifting aid (100) is in the inclined posture, another part of the plurality of lower connecting holes (3121) can coincide with a part of the axis of the plurality of upper connecting holes (4111); The connection mechanism further comprises a fastener (5), and the fastener (5) can be inserted into the upper connection hole (4111) and the lower connection hole (3121) whose axes coincide with each other.

2. The lifting aid test tool according to claim 1, characterized in that: The lower connecting body (31) comprises a lower connecting transverse plate (311) and a lower connecting vertical plate (312) which are connected to each other, the lower connecting transverse plate (311) is connected to the lower end of the test bench (1), and the lower connecting vertical plate (312) is provided with a plurality of lower connecting holes (3121).

3. The lifting aid test tool according to claim 1, characterized in that: The lower connecting assembly (3) further comprises a clamping block (32) connected to the lower connecting body (31); The end surface of the lower end of the test bench (1) is provided with a clamping groove (111), and the clamping block (32) is clamped in the clamping groove (111).

4. The lifting aid test tool according to claim 3, characterized in that: A plurality of the clamping grooves (111) are arranged at intervals along the first direction and all extend along the second direction, and the clamping block (32) connected to each of the lower connecting bodies (31) can select at least one of the clamping grooves (111) for clamping; The first direction and the second direction are perpendicular to each other.

5. The lifting aid test tool according to claim 1, characterized in that: The lifting auxiliary tool (100) comprises a main body (101) and a sleeve (102) arranged on the main body (101), and a first pin hole (1011) is opened on the main body (101); The upper connecting component (4) also includes a latch (42), a second pin hole (4112) is provided at the upper portion of the upper connecting body (41), a hook (4113) is provided at the lower portion of the upper connecting body (41), the latch (42) is inserted into the first pin hole (1011) and the second pin hole (4112), and the hook (4113) is hung on the sleeve (102).

6. The lifting aid testing tool according to claim 5, characterized in that: The upper connection assembly (4) further comprises a limiting body (43) fixedly arranged on two outer end surfaces of the upper connection body (41) along the first direction, and the main body (101) can abut against the limiting body (43).

7. The lifting aid testing tool according to claim 6, characterized in that: The latch pin (42) is provided with a limiting piece (421), and the limiting piece (421) is provided with a third pin hole; The upper connecting component (4) further comprises a pin shaft (44) and a bayonet pin (45); the pin shaft (44) is arranged on the limiting body (43) and can be inserted into the third pin hole; the bayonet pin (45) is arranged on the pin shaft (44) to prevent the pin shaft (44) from slipping out of the third pin hole.

8. The lifting aid testing tool according to claim 1, characterized in that: The lifting mechanism (2) comprises a hand chain hoist (21) and a dynamometer (22); the hand chain hoist (21) is connected to the upper end of the test bench (1); the dynamometer (22) is arranged between the lifting auxiliary device (100) and the output end of the hand chain hoist (21); the dynamometer (22) is used to measure the tension of the hand chain hoist (21).

9. The test method of lifting auxiliary equipment is characterized in that: Applied to the hoisting aid testing tool as described in any one of claims 1 to 8 above, the hoisting aid testing method comprises the following steps: S1, controlling the lifting mechanism (2) to lift the lifting aid (100) according to a first preset condition, wherein the first preset condition includes that the lifting pulling force is set to a first set value and the lifting aid (100) is in a vertical posture; S2, judging whether the lifting aid (100) meets the preset requirements under the first preset conditions; if so, the lifting aid (100) is qualified; if not, proceeding to the next step; S3, controlling the lifting mechanism (2) to lift the lifting aid (100) according to a second preset condition, wherein the second preset condition includes that the lifting pulling force is set to a second set value and the lifting aid (100) is in an inclined posture; S4, judging whether the lifting aid (100) meets the preset requirement under the second preset condition, wherein the preset requirement is that the lifting aid (100) is not deformed or damaged; if so, the lifting aid (100) is qualified; if not, the lifting aid (100) is unqualified.

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