Bracket assembly for mobile stand
For mounting on the beam of a mobile stand to hold a machine, a bracket assembly includes a bracket body supportable on the beam of the mobile stand, a front clamp mounted in the bracket body for clamping on the beam of the stand, a rear clamp pivoted to the bracket body, and a locking control device pivotally mounted in the bracket body for operation by the user to impart a biasing force to the rear clamp for enabling the rear clamp to be firmly clamped on the beam of the stand so as to further hold down the machine on the beam.
1. A bracket assembly for a mobile stand having a long beam and a plurality of legs that support the long beam for supporting a machine, said bracket assembly comprising:
a bracket body mountable on the long beam of the mobile stand;
a front clamp mounted in said bracket body, said front clamp having a front stop face contactable with the long beam of the mobile stand;
a rear clamp pivoted to said bracket body and corresponding to said front clamp, said rear clamp having a rear stop face contactable with the long beam of the mobile stand, and a guide face opposite to said rear stop face; and
a locking control device having an eccentric member and a follower rotatably coupled to said eccentric member, said eccentric member being pivoted to said bracket body and having an operating handle extending out of said bracket body, said follower having a push face kept in contact with said guide face of said rear clamp;
wherein said eccentric member of said locking control device comprises a contacting portion; said operating handle extends outwards from a middle part of said contacting portion; said follower comprises two coupling rings respectively coupled to said contacting portion and set at two sides relative to said operating handle, said coupling rings each having a front side forming together said push face of said follower.
2. The bracket assembly as claimed in claim 1 , wherein said guide face of said rear clamp is an arched face; said push face of said follower is an arched face matching said guide face.
3. A bracket assembly for a mobile stand having a long beam and a plurality of legs that support the long beam for supporting a machine, said bracket assembly comprising:
a bracket body mountable on the long beam of the mobile stand;
a front clamp mounted in said bracket body, said front clamp having a front stop face contactable with the long beam of the mobile stand;
a rear clamp pivoted to said bracket body and corresponding to said front clamp, said rear clamp having a rear stop face contactable with the long beam of the mobile stand, and a guide face opposite to said rear stop face; and
a locking control device having an eccentric member and a follower rotatably coupled to said eccentric member, said eccentric member being pivoted to said bracket body and having an operating handle extending out of said bracket body, said follower having a push face kept in contact with said guide face of said rear clamp;
wherein said bracket body comprises a horizontal top wall and two vertical sidewalls, said vertical sidewalls each having a bottom opening for coupling to the long beam of the stand; said front clamp and said rear clamp are respectively pivotally mounted between said two vertical sidewalls of said bracket body.
4. The bracket assembly as claimed in claim 3 , further comprising an adjustment device mounted in said bracket body, said adjustment device comprising a movable member connected to said front clamp and movable relative to said bracket body to bias said front clamp.
5. The bracket assembly as claimed in claim 4 , wherein said adjustment device further comprises a locating plate fixedly mounted in said bracket body between said two vertical sidewalls, said locating plate having a through hole for receiving said movable member, and a locknut for locking said movable member; said movable member comprising a threaded shank inserted through the through hole of said locating plate, threaded into said locknut and connected to said front clamp.
6. The bracket assembly as claimed in claim 3 , wherein the bottom opening of each of said two vertical sidewalls is deviated from a part of the respective vertical sidewall near said locking control device.
7. The bracket assembly as claimed in claim 6 , wherein the front stop face of said front clamp is an arched stop face matching an arched portion of the long beam of the stand; the rear stop face of said rear clamp is an arched stop face matching an arched portion of said long beam opposite to said front clamp and extending over a bottom side of the long beam of the stand.
8. The bracket assembly as claimed in claim 6 , further comprising a carrying handle affixed to one vertical sidewall of said bracket body remote from the bottom opening of the respective vertical sidewall.
9. The bracket assembly as claimed in claim 3 , wherein said front clamp comprises a protruding spring strip stopped against a bottom surface of the horizontal top wall of said bracket body.
10. The bracket assembly as claimed in claim 3 , wherein said rear clamp comprises a protruding spring strip stopped against a bottom surface of the horizontal top wall of said bracket body.
11. The bracket assembly as claimed in claim 3 , wherein said locking control device further comprises a locating pin transversely inserted through said two vertical sidewalls of said bracket body for stopping said operating handle.