CN203374598U

CN203374598U - Detachable expansion bolt

Info

Publication number: CN203374598U
Application number: CN201320410419.5U
Authority: CN
Inventors: 张卫
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-11
Filing date: 2013-07-11
Publication date: 2014-01-01
Anticipated expiration: 2023-07-11

Abstract

The utility model discloses a detachable expansion bolt. A bolt head of the detachable expansion bolt can be arranged to be of a detachable nut type structure and therefore the detachable expansion bolt is convenient to detach. The detachable expansion bolt comprises a nut, an expansion pipe, the bolt head and a screw rod. The front end and the rear end of the screw rod are arranged to be of threaded head structures. The bolt head arranged to be of the cone-shaped nut type structure is connected with the lower end of the screw rod through a screw hole in a threaded mode. The expansion pipe is arranged on the screw rod in a sleeved mode and located above the bolt head. The nut is connected with the upper end of the screw rod through the screw hole in a threaded mode. When the expansion bolt is installed, the expansion bolt can be inserted into an installation hole of a supporting object, the expansion pipe is pushed to move downwards along the screw rod by rotating the nut, when the bolt head is extruded into the expansion pipe and promotes the expansion pipe to expand, the expansion bolt can be fixedly connected to the supporting object. When the expansion bolt is detached, the screw rod is rotated reversely, the screw rod is detached from the bolt head, the bolt head retreats out of the expansion pipe reversely, and finally the expansion pipe and the bolt head can be taken out from the installation hole of the supporting object.

Description

Dismountable upset bolt

Technical field

The utility model relates to a kind of EXPANSION ANCHOR BOLTS, especially can be arranged to dismountable screw cap type structure by the bolt head by bolt, thereby is convenient to the dismountable upset bolt of removing.

Background technique

At present, its bolt head of known EXPANSION ANCHOR BOLTS is stationary structure, and therefore discarded EXPANSION ANCHOR BOLTS is inconvenient to remove.

Summary of the invention

Be inconvenient to the deficiency of removing in order to overcome existing EXPANSION ANCHOR BOLTS when passing into disuse, the utility model provides a kind of dismountable upset bolt, this dismountable upset bolt can be arranged to dismountable screw cap type structure by the bolt head by bolt, thereby is convenient to remove discarded EXPANSION ANCHOR BOLTS.

The utility model solves the technological scheme that its technical problem adopts: the utility model comprises nut, expansion tube, bolt head and screw rod.The thread head structure all is arranged in the rear and front end of screw rod, the bolt head is arranged to conical screw cap type structure, and the bolt head is threaded with the lower end of screw rod by screw, and expansion tube is sleeved on screw rod, and being positioned at the top of bolt head, nut is threaded with the upper tip of screw rod by screw.When EXPANSION ANCHOR BOLTS is installed, EXPANSION ANCHOR BOLTS is inserted in the mounting hole of bearing object, then is promoted expansion tube by rotating nut and move down along screw rod, when the bolt head, clamp-on in expansion tube and impel expansion tube to expand change when large, EXPANSION ANCHOR BOLTS can be fixedly connected on bearing object.While removing EXPANSION ANCHOR BOLTS, contra rotating screw, lay down screw rod from the bolt head, then the bolt head is oppositely exited from expansion tube, finally expansion tube and bolt head can be taken out from the mounting hole of bearing object.

The beneficial effects of the utility model are to be arranged to dismountable screw cap type structure by the bolt head by bolt, thereby to be convenient to remove discarded EXPANSION ANCHOR BOLTS.

The accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is plan view of the present utility model.

Fig. 2 is the partial sectional view of Fig. 1.

Fig. 3 is the A-A sectional drawing of Fig. 1.

Fig. 4 is the enforcement illustration of Fig. 3.

In figure: 1. nut.2. expansion tube.3. bolt head.4. screw rod.

Embodiment

In Fig. 1, Fig. 2, Fig. 3, Fig. 4, the thread head structure all is arranged in the rear and front end of screw rod 4, bolt head 3 is arranged to conical screw cap type structure, bolt head 3 is threaded with the lower end of screw rod 4 by screw, expansion tube 2 is sleeved on screw rod 4, and being positioned at the top of bolt head 3, nut 1 is threaded with the upper tip of screw rod 4 by screw.When EXPANSION ANCHOR BOLTS is installed, EXPANSION ANCHOR BOLTS is inserted in the mounting hole of bearing object, promote expansion tube 2 by rotating nut 1 again and move down along screw rod 4, when bolt head 3 is clamp-oned in expansion tube 2 and impel expansion tube 2 expansions to become large, EXPANSION ANCHOR BOLTS can be fixedly connected on bearing object.While removing EXPANSION ANCHOR BOLTS, contra rotating screw 4, lay down screw rod 4 from bolt head 3, then bolt head 3 is oppositely exited from expansion tube 2, finally expansion tube 2 and bolt head 3 can be taken out from the mounting hole of bearing object.

Claims

1. a dismountable upset bolt, it comprises nut, expansion tube, bolt head and screw rod, it is characterized in that: the thread head structure all is arranged in the rear and front end of screw rod, the bolt head is arranged to conical screw cap type structure, the bolt head is threaded with the lower end of screw rod by screw, expansion tube is sleeved on screw rod, and is positioned at the top of bolt head, and nut is threaded with the upper tip of screw rod by screw.