Columnar combustion arm guardrail
A guardrail and column type technology, which is applied to drilling equipment, earthwork drilling, support devices, etc., can solve the problems of insecurity, time-consuming and laborious, insertion, etc., and achieve the effect of reducing labor intensity, simple retracting and unloading operations, and protecting the guardrail.
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[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0022] Such as Figure 5 , Figure 6 As shown, the present invention includes a plurality of cross bars 21 arranged on both sides of the combustion arm 20, and a connection block 22 is respectively arranged at both ends of each cross bar 21, and the connection blocks 22 on two adjacent cross bars 21 pass through a pin 23, and then form an integral beam 24;
[0023] A plurality of connecting plates 25 are arranged at intervals at the bottom of the beam 24, each connecting plate 25 is connected to a vertical rod 26 through a pin shaft 23, and the bottom of each vertical rod 26 is connected to a connecting plate provided on the combustion arm 20 through a pin shaft 23 27. An upper through hole 28 and a lower through hole 29 are provided at intervals in the middle of each vertical pole 26;
[0024] A fixed plate 30 is arranged horizontally at the root ...
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