KR20160150317A - Apparatus and method for safety load testing of lifting equipment - Google Patents

Abstract

The present invention relates to a test apparatus for inspecting the safety of lifting equipment which includes: a base on which at least one or more moving wheels are installed; a frame body which is composed of a vertical frame member whose one end is fixedly combined with the upper side of the base in a vertical direction and a horizontal frame member which is horizontally combined with the other end of the vertical frame member; an upper coupling unit which is formed around the center of the horizontal frame member; the lifting equipment whose one end is connected to the upper coupling unit; a load sensing unit which is installed in a position of the base to face the lifting equipment and is connected to the other end of the lifting equipment; and a display unit which is installed on the upper side of the frame body and outputs a load measured in the load sensing unit. Accordingly, the present invention can previously determine the safety of the lifting equipment by performing an actual load test of the lifting equipment.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a test apparatus for safety inspection of lifting equipment. More particularly, the present invention relates to a test apparatus for safety inspection of lifting equipment that can be tested so that safety of lifting equipment can be checked in advance.

The lifting equipment is used for lifting heavy objects, such as a chain block or a lever block including a hook and a chain. Such lifting equipment treats heavy objects, so when the lifting equipment is broken, the heavy objects fall down, which increases the possibility of an accident. Therefore, there is a need to check such a lifting device before the lifting operation or lifting.

Conventionally, the preliminary inspection is performed on the condition of the lifting equipment by performing non-destructive inspection (MT, VT, PT) on the hook and chain constituting the chain block or lever block.

However, since the actual load test (tensile test) is not performed when the lifting equipment is actually used in the field, there is a problem that the safety when the actual load is applied in the field can not be secured.

Korean Patent Registration No. 10-0745228 (Aug. 1, 2007)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a test apparatus for safety inspection of lifting equipment, which facilitates an actual load test (tensile test) It has its purpose.

To achieve the above object, according to a first aspect of the present invention, there is provided a test apparatus for safety inspection of a lifting equipment, comprising: a base on which at least one mobile wheel is installed; A frame body fixedly coupled to the base; A hook member installed near the center of the frame body; A lifting device coupled to the hook member; A load sensing part installed at a position facing the lifting device of the base; And a display unit installed on the frame body to output a load measured by the load sensing unit.

According to a second aspect of the present invention, there is provided a test method for inspecting a safety of a pull-on equipment, comprising the steps of: mounting a lifting device to be measured on a testing device for safety inspection of a lifting equipment; Selecting a load added to the lifting equipment and applying a selected load to the lifting equipment; And determining at least one component constituting the lifting equipment based on the degree of deformation of the stability.

According to the present invention, an actual load test capable of directly applying an appropriate load to the lifting equipment can be performed, so that the stability of the lifting equipment can be determined in advance.

In addition, according to the present invention, it is possible to test a variety of lifting equipment with one test apparatus by providing a load sensing unit capable of adjusting a desired applied load.

In addition, according to the present invention, the apparatus can be moved to a predetermined position, thereby facilitating testing of the lifting equipment.

1 is a perspective view of a test apparatus for safety inspection of a lifting equipment according to an embodiment of the present invention.
2 is a perspective view illustrating a load sensing unit included in a test apparatus for safety inspection of a lifting equipment according to an embodiment of the present invention.
3 shows a state in which a chain block is mounted on a test apparatus for safety inspection of a lifting equipment according to an embodiment of the present invention.
4 shows a state where a chain is mounted on a test apparatus for safety inspection of a lifting equipment according to an embodiment of the present invention.
FIG. 5 is a flowchart illustrating a test method for safety inspection of a pulling-out apparatus according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

FIG. 1 is a perspective view of a test apparatus for safety inspection of a lifting equipment according to an embodiment of the present invention, and FIG. 2 is a perspective view illustrating a load sensing unit provided in a test apparatus for safety inspection of a lifting equipment according to an embodiment of the present invention . 1 and 2, a base 110 according to an embodiment of the present invention, a frame body 120 coupled to the base 110, And a load sensing unit 130 installed at a position corresponding to the upper coupling unit 121 on the upper side of the base 110.

The base 110 is formed in a rectangular plate shape having a predetermined thickness so as to have a supporting force equal to or higher than a certain level. On the lower side of the base 110, a moving wheel 113 is installed so as to be moved to a desired position.

In addition, the base 110 is provided with a fixing member 115 so that the base 110 can be fixed after being moved to a specific position. The fixing member 115 may be fixed by rotating the fixing member with a hinge structure or may include various breaking means capable of restraining the moving wheel 113. However, The test apparatus for the safety inspection of the lifting equipment includes a fixing member 115 on which threads are formed so as to be lowered when the base is rotated. Such fixing member 115 is a preferable fixing means because of its simple structure and easy installation.

The frame body 120 is fixed to the upper surface of the base 110. The frame body 120 includes a pair of vertical frame members 120a extending in the vertical direction on the upper side of the base 110 and a pair of vertical frame members 120b extending in the horizontal direction to connect the respective ends of the vertical frame member 120a And a horizontal frame member 120b.

Since the height of the frame body 120 can be used in the primary radiation management area of the nuclear power plant of the present invention, there are restrictions on the movement route, the convenience of carrying and the securing of the designated place It is necessary to design the height of the frame body 120 appropriately in consideration of the chain block and the chain length.

An upper coupling part 121 having a through hole is provided near the center of the horizontal frame member 120b of the frame body 120. [

Here, the upper fastening part 121 may include an upper shackle part 150. 1, the shackle part 150 includes a ring 151 and a fastening bolt 153. The shackle part 150 passes through both ends of the ring 151 and then passes through the upper fastening part 121 through the through-hole 121a of the first through-hole 121.

A lower coupling part 111 having a through hole at a position corresponding to the upper side of the base 110 downward of the upper coupling part 121 is provided.

Here, the lower coupling part 111 is coupled to a load sensing part 130 that senses an applied load.

The load sensing part 130 is coupled to the lower shackle part 140. 2, the lower shackle part 140 includes a ring 141 and a fastening bolt 143. The lower shackle part 140 passes through both ends of the ring 141, (130).

Here, the load sensing unit 130 outputs the measured load information to the display unit 180 provided on the upper side of the frame body 120 through a cable 135.

The display unit 180 includes a load indicator 181 for indicating the magnitude of the applied load, a power indicator 183 for indicating whether the power source is ON or OFF, and a switch unit 185 for turning the power ON / OFF .

In addition, the load sensing unit 130 is configured to be able to control an applied load. This makes it possible to carry out stability tests on various types of lifting equipment.

The lifting equipments include a chain block, a lever block, etc. The common main components are a hook and a chain. In order to measure whether the hook and the chain can withstand the actual load when the hook and the chain are installed in the field, the tensile test is carried out by attaching it to the test apparatus for safety inspection of the lifting equipment of the present invention and applying an appropriate load.

FIG. 3 shows a state where a chain block is mounted on a test apparatus for safety inspection of a lifting equipment according to an embodiment of the present invention. In FIG. 1, the lower shackle part 140 and the upper shackle part 150 And one chain block 160 is installed.

The chain block 160 includes a hook body 161 to be engaged with the upper shackle part 150, a block body 163 having a penetrating part through which the transfer chain 164 is moved to penetrate, And a coupling part 167 connected to a lower end of the vertical chain 165. The coupling part 167 is coupled to the lower shackle part 140. The coupling part 167 is coupled to the lower shackle part 140,

The lower shackle portion 140 is coupled to the load sensing portion 130 to transmit a load applied from the load sensing portion 130 to the chain block 160. As a result, .

4 shows a state where a chain is mounted on a test apparatus for safety inspection of a lifting equipment according to an embodiment of the present invention. This will be described below with reference to FIG. The components having the same reference numerals as those in Fig. 3 are denoted by the same reference numerals and will not be described.

A chain 170 is installed on the lower shackle part 140 and the upper shackle part 150 and a load is applied from the load sensing part 130 connected to the lower shackle part 140, .

FIG. 5 is a flowchart illustrating a test method for inspecting the safety of the lifting equipment according to an embodiment of the present invention, including a step S110 of mounting the lifting equipment, a step of applying a load to the lifting equipment, (S120), and judging whether or not to pass the test according to the degree of deformation.

Whether or not the test is passed depends on the type of lifting equipment mounted on the test equipment for safety inspection of the lifting equipment according to the present invention.

The chain block 160 of FIG. 3 having hook portions is as follows.

The upper hook portion 161 of the chain block 160 requiring tensile testing is coupled to the upper shackle portion 150 and the lower coupling portion 167 is coupled to the lower shackle portion 140. [

Thereafter, the switch unit 185 of the power source is switched from the display unit 180 to "ON ", and the load instruction unit 181 enters the weight setting menu to perform the zero point adjustment.

After the zero point is adjusted, a load to be applied to the load sensing unit 130 is adjusted and a predetermined load is applied to perform the tensile test of the chain block 160.

For example, a value from "0 value to 1250 kg value" is displayed on the load instruction section 181 so that the chain block 160 is subjected to a load of 1.25 times the permissible load of 1000 kg of the one-tone chain block 160 Increases the load when indicated.

The opening amount of the hook portion 161 of the chain block 160 is measured in a state in which the load is applied at a desired load as described above.

If the dimension of the opening portion is more than 15% wider than the initial state, it is judged that the test is failed and discarded, and the new chain block 160 is replaced.

Further, even if the hook portion 161 is twisted by 10 degrees or more from the initial state, it is judged that the test has failed and the waste is discarded and replaced with a new one.

On the other hand, when the lifting device is the chain 170 shown in FIG. 4, it is judged that the tensile test is failed when the lifting device is increased beyond the maximum allowable value and must be replaced.

For example, if the chain of the chain 170 measures the length of 11 links and exceeds the maximum allowable value of the original dimension, the chain 170 is discarded.

An example of the maximum permissible value is shown in Table 1 below.

Capacity Chain Wire
Diameter (inch) Maximum allowable value
(Maximum Allowable Gauge Length) 1/2
0.25
11 links = 9.01 inches
One
0.25
11 links = 9.01 inches
2
0.31
11 links = 10.88 inches
3
0.28
11 links = 9.92 inches
5
0.35
11 links = 12.75 inches
10
0.35
11 links = 12.75 inches

It is also necessary to check that the chain 170 is correctly seated and actuated on a load sheave and further check the wear of the chain 170 connection.

In step S140, the lifting equipment is used in operation (S140) through a step S130 for determining the stability based on the degree of deformation by applying an appropriate load to various lifting devices (chain block, lever block, , The lifting equipment is discarded (S150), so that the safety of the lifting equipment can be secured by checking beforehand the opening or twisting of the hook, which is a component of the lifting equipment, and the breakage of the chain.

By using the test equipment for the safety inspection of the lifting equipment according to the embodiment of the present invention, it is possible to check the elements (hook opening or torsion, breakage of the chain, etc.) It can be discarded. This makes it possible to remove safety hazards that may occur during lifting of heavy objects in the field, and to protect workers and facilities through securing of lifting equipment.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

110: base 120: frame body
130: Load sensing unit 135: Cable
140: lower shackle part 150: upper shackle part
160: chain block 170: chain
180: display unit 181: load indicator
183: Power supply display part 185: Switch part

Claims (8)

A base on which at least one mobile wheel is installed;
A vertical frame member having one end vertically fixed to the upper side of the base, and a horizontal frame member horizontally coupled to the other end of the vertical frame member;
An upper fastening portion formed near the center of the horizontal frame member;
A lifting device having one end connected to the upper fastening part;
A load sensing unit installed at a position facing the lifting equipment of the base and connected to the other end of the lifting equipment; And
And a display unit installed on the frame body for outputting a load measured by the load sensing unit. The method according to claim 1,
Wherein the load sensing unit is configured to adjust a load applied to the lifting equipment. The method according to claim 1,
The test apparatus for safety inspection of the lifting equipment includes a fixing member formed so as to be threaded down when rotated so as to be fixed at a predetermined position and installed so as to penetrate through the base. The method according to claim 1,
Wherein the load sensing part is connected to the lifting device by a shackle part composed of a hook part and a fastening bolt,
Wherein the shackle portion is configured such that the fastening bolt is coupled to both ends of the ring portion and one side of the load sensing portion. Mounting a lifting device to be measured on a testing device for safety inspection of a lifting equipment according to any one of claims 1 to 4;
Selecting a load added to the lifting equipment and applying a selected load to the lifting equipment; And
And determining at least one component constituting the lifting equipment based on the degree of deformation of the stability of the lifting equipment. The method of claim 5,
Wherein said part is a hook and is discarded in the event of a twist of at least 10 degrees from its initial condition. The method of claim 5,
Wherein the component is a hook and discarded when the opening of the hook is more than 15% wider than the initial condition. The method of claim 5,
The test method for the safety inspection of the lifting equipment, wherein the part is a chain and is discarded when it exceeds the maximum allowable value and is increased.

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