2022 Inner Mongolia latest construction tower crane (construction special operation) simulation examination question bank and answers

The 100% question bank provides Special workers （ Tower crane ） Examination questions 、 Special workers （ Tower crane ） Test prediction questions 、 Special workers （ Tower crane ） The real exam question 、 Special workers （ Tower crane ） Certificate examination question bank, etc , Provide online questions and brush questions , Online mock exam , Help you pass the exam easily .

 

123 The lifting height limiter of tower crane with luffing boom , It should also be able to cut off the power supply of the outward luffing control circuit at the same time , But there should be downward and inward luffing movement .

answer ： correct

124 The two-way luffing of the tower crane with trolley luffing shall be equipped with rope breaking protection device and shaft breaking protection device , And the action should be sensitive 、 It works .

answer ： correct

125 The tower crane does not have a collector ring for the rotating part , Rotation limiter should be set , The left and right rotation should be controlled at 1.5 circle .

answer ： error

126 Amplitude refers to the horizontal distance from the slewing center line of the tower crane to the vertical line of the hook Center , It is usually called turning radius or working radius .

answer ： correct

127 Tower cranes can only be used as vertical transportation equipment .

answer ： correct

128 Terminal to prevent the tower crane from running out of the track , Amplitude limiter is often used to limit .

answer ： error

129 The size of the fixed foundation shall meet the stability requirements of the tower crane in working and non working states and the requirements of the foundation bearing capacity .

answer ： correct

130 The foundation of tower crane shall be designed and constructed according to the requirements specified in the current national standards and operation instructions .

answer ： correct

131 During the jacking process of tower crane , Ensure that the jib of the tower crane is in a balanced state .

answer ： correct

132 When adding section to tower crane , The attachment device should be installed after 、 Start by jacking up and adding sections .

answer ： error

133 When disassembling the jack up tower crane, the attachment device should be removed first 、 Fall back .

answer ： correct

134 The installation and disassembly of tower crane reach a height 1m And more than , Personnel working at heights shall wear safety helmets correctly according to regulations 、 Safety belts and other labor protection articles .

answer ： error

135 During tower crane operation , Bolts and shaft pins can be loosened by rotating the boom .

answer ： error

136 The influence of surrounding obstacles on the operation of the tower crane and the operation of the tower crane on the surrounding shall be fully considered in the installation and site selection of the tower crane .

answer ： correct

137 Tower crane installation and disassembly , The command signal must be sent by the commander , Other personnel shall not command .

answer ： correct

138 The installation sequence from tower crane underframe to slewing mechanism is generally ： chassis → Basic section → Standard section → Set the frame → Upper support of slewing mechanism 、 walking board 、 cab 、 Slewing ring and lower support → Slewing tower

answer ： correct

139 The installation sequence from the top of the tower crane to the counterweight is generally ： top of a tower → Balance arm and balance arm pull rod → Partial counterweight （ Usually one or two pieces ）→ Wire connection → Boom and boom tie rod → Other counterweights

answer ： correct

140 The installation sequence of tower crane threading and winding steel wire rope to complete machine test is generally ： Threading and winding steel wire rope → Safety device adjustment → Jacking and jointing → Diagonal bracing → Jacking and jointing → Attach frame → Performance test and acceptance of the whole machine

answer ： correct

141 The lifting process of tower crane is not complicated , But we must be serious 、 careful , Everyone should have a clear division of labor , Attend to each one's own duties .

answer ： correct

142 The clearance between the guide wheel of the climbing roller carrier and the main chord of the tower body shall be adjusted to 2～3mm, Loosen the cable length , Make it slightly larger than the total climb height .

answer ： correct

143 During the test of trolley luffing tower crane, it is between the maximum amplitude and the minimum amplitude , The trolley changes amplitude in two directions at the rated speed .

answer ： correct

144 The installation unit of tower crane shall conduct self inspection on the installation quality , And entrust a qualified inspection and testing institution to carry out the inspection .

answer ： correct

145 The self inspection report and inspection report of the installation quality of the building tower crane shall be stored in the equipment archives .

answer ： correct

146 During the installation of tower crane , The installation unit shall conduct self inspection and acceptance in stages .

answer ： correct

147 Construction tower crane installation and disassembly workers refer to those engaged in fixed construction at the construction site of construction projects 、 Installation of rail and internal climbing tower cranes 、 Attachment 、 Jacking and dismantling operations .

answer ： correct

 

148 The safety rope for hoisting installation and disassembly refers to the steel wire rope used to ensure the stability of the installed components or equipment during operation , The upper end is tied with the installation object , The lower end is fixed with the ground anchor .

answer ： error

149 Lifting appliances refer to the machines, tools and accessories that fasten and fix the lifting ropes , Like a sling 、 A hook 、 Lifting beam and snap ring, etc .

answer ： correct

150 Slip rope refers to the general term of ropes used to prevent falling accidents of lifting personnel when working at heights .

answer ： correct

151 The wind rope of lifting cable refers to the rope tied to the lifted structure , Held by the person below , Prevent the structure from swinging arbitrarily during lifting .

answer ： error

152 Under special circumstances, the tower crane can carry people .

answer ： error

153 The lifting operation of tower crane should be carried out at night .

answer ： error

154 When commanding the boom and hook at the same time , The commander must command the boom with his left hand , The right hand commands the hook .

answer ： correct

155 Tower crane installers should be able to safely handle heavy objects , It does not include the physical strength of installing the tower crane .

answer ： error

156 Non operators can climb on the operation platform of the tower crane lifting jacket to watch .

answer ： error

157 Billboards or other placards can be attached to the tower of the tower crane .

answer ： error

158 General gesture signal refers to the command gesture generally applicable to various types of cranes in hoisting .

answer ： correct

159 Special hand signal refers to the special lifting 、 Luffing 、 The command gesture used separately by the crane of the slewing mechanism .

answer ： correct

160 The hoisting sound signal is the auxiliary signal of gesture signal or semaphore , The user can determine whether to adopt .、 answer ： correct

161 The color of the hoisting command flag is red 、 green . It should be non fading 、 Materials that are not prone to wrinkles .

answer ： correct

162 The lifting commander should hold a red flag in his right hand , Hold a green flag in your left hand .

answer ： error

163 When the lifting commander cannot see the driver and load at the same time , It is not allowed to add intermediate commanders to transmit signals step by step .

answer ： error

164 The front of the lifting commander 、 after 、 Left 、 Right in command language , All are based on the position of the driver .

answer ： correct

165 The hand signals used in lifting command are divided into , General gesture signal and special gesture signal .

answer ： correct

166 The hoisting command signal is divided into , Hand signals 、 Semaphore signal 、 Sound signal 、 There are four kinds of language signals .

answer ： correct

167 The lifting commander issued “ get set ” Signal time , Look at the object .

answer ： error

168 When the lifting commander requires the lifting machinery to move slightly , Available on demand , Repeat the signal .

answer ： correct

169 Used by the hoisting commander “ Hoisting command language ” Command time , Speak local languages .

answer ： error

170 When multiple people are tied to the same object , Before lifting , You should make a call response first , After confirming that the binding is correct , Can be commanded by more than one person .

answer ： error

171 The arms of the lifting commander are straight , Put it over your head , Five fingers stretch out naturally , Keep your palms forward , Refer to “ get set ” Pay attention to the lifting signal

answer ： correct