CN2235436Y

CN2235436Y - Multi-function hydraulic jack for pushing or drawing

Info

Publication number: CN2235436Y
Application number: CN 95228742
Authority: CN
Inventors: 吕文炎
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-12-18
Filing date: 1995-12-18
Publication date: 1996-09-18
Anticipated expiration: 2005-12-18

Abstract

The utility model relates to a tensioning hydraulic jack which is mainly used for tensioning and cutting prestressing ribs, pretightening anchor devices and other manufacturing procedures in building construction. The utility model mainly adopts a middle ring body arranged at the front end of a cylinder body, the middle ring body can be detached and connected, an end ring element which can be detached and connected is arranged at the front end of the middle ring, and the end ring element is positioned in the front of a middle ring element. Besides, the front end of an inner cylinder is provided with a detachable joint section. Thus, various manufacturing procedures can be accomplished, and the utility model has the advantages of convenient use and reduced cost.

Description

Multi-functional stretch-draw hydraulic jack

The utility model relates to a kind of stretch-draw hydraulic jack, is mainly used in architectural give stress rib stretch-draw, cut-out and the ground tackle that gives in the stress engineering construction and gives manufacturing procedures such as tight.

At present, common stretch-draw hydraulic jack just is used for workpiece and gives stress tension, and field of application is narrow, and the construction trade for the multiplex (MUX) plants uses inconvenience, and cost is higher.

In view of this, the purpose of this utility model is the multi-functional stretch-draw hydraulic jack that detachable connector connects cylinder body and middle ring, middle cylinder and end ring spare, inner casing and instrument.

The purpose of this utility model is achieved in that a kind of multi-functional stretch-draw hydraulic jack, comprise cylinder body, middle cylinder, inner casing, it is characterized in that: the front end at cylinder body is provided with the middle ring body that removably connects, be provided with the end ring spare of separable joint at the front end of middle cylinder, and this end ring spare is in middle ring front, in addition, the inner casing front end has detachable connecting section.

Above-mentioned end ring spare be top pressing device, above-mentioned in ring be helmet, and between this top pressing device and inner casing, be provided with and the detachable section of the connection bonded assembly instrument grip of above-mentioned inner casing front end.Above-mentioned end ring spare is to be connected to form by cutting knife and jam nut, and above-mentioned again middle ring is a tool fixing frame.Above-mentioned end ring spare is the roof pressure head, and above-mentioned again middle ring is a tool fixing frame.

Owing to adopt such scheme: can not only give stress tension to workpiece (as: reinforcing bar), can also give the multiple functions such as tight of giving of stress rib cut-out and ground tackle, thereby easy to use, cost reduces.

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

Fig. 1 the utility model first example structure scheme drawing.

Fig. 2 the utility model second example structure scheme drawing.

Fig. 3 the utility model the 3rd example structure scheme drawing.

Among the figure: cylinder, 6 inner casings, 7 right oil pockets, 8 left oil pockets, 9 workpiece, A oil inlet, B oil export, 91 anchor rings, 92 anchor sheets in ring, 21 tool fixing frame, 3 instrument grips, 4 cylinder bodies, 5 in 1 end ring spare, 11 cutting knifes, 12 jam nuts, the 13 roof pressure heads, 2.

First embodiment mainly is made up of end ring body 1, middle ring 2, instrument grip 3, cylinder body 4, middle cylinder 5 and inner casing 6, as shown in Figure 1, and wherein:

End ring spare 1 is a top pressing device, and this top pressing device is that the external conical sleeve, the sky that have liner are enclosed within workpiece 9 (as: two ends are fixed on the reinforcing bar on the permanent seat) outer rim, the front end outside thread of cylinder 5 in connecting with its rear end negative thread.

In ring 2 are helmets, this helmet is a ring set in the middle of, be between end ring spare 1 (depressor) and the cylinder body 4 and with the front end that is threaded in cylinder body 4, as the mobile left-hand of end ring spare 1 (top pressing device) spacing and support in the effect of cylinder 5.

Instrument grip 3 is a kind of three-jaw chucks, and this three-jaw chuck is with spring the instrument anchor chock to be advanced in the anchor cup, locking workpiece (as reinforcing bar), and between these instrument grip 3 external end ring spares 1 (top pressing device) and the inner casing 5, and with the front end that is threaded in inner casing 6.

The principle of work of present embodiment:

Cylinder 5 is moved to the left right oil pocket 7 promotions when pressure oil enters from oil inlet A, this moment, the unloaded oil of left oil pocket 8 was discharged from oil export B, because middle cylinder 5 coupling end rings 1 (top pressing device), the liner of this top pressing device leaves instrument grip 3, one end of these instrument grip 3 locking workpiece 9 (as reinforcing bar) (by termination or stage casing), above-mentioned top pressing device is moved to the left until the stress tension that gives of promptly finishing one or one section reinforcing bar against the other end permanent seat (end illustrates among the figure) that fixes to clamp workpiece 9.

Second embodiment, as shown in Figure 2, its end ring spare 1 is by cutting knife 11 and jam nut 12 bonded assembly assembly sets (also can be whole), with the front end outside thread of cylinder 5 in the negative thread connection of jam nut 12, cutting knife 11 front ends have blade; In ring 2 are tool fixing frame 21, pass workpiece 9 (as: reinforcing bar) in its perpendicular endoporus, cutting knife 11 matches with locating surfaces in the tool fixing frame 21 with the blade of cutting knife 11 and to finish the section of cut-out workpiece 9 under the promotion of middle cylinder 5; Present embodiment does not need instrument grip 3, and all the other structures are identical with first embodiment.

The 3rd embodiment, as shown in Figure 3, its end ring spare 1 is a roof pressure head 13, front end outside thread with cylinder 25 in the connection of its rear end negative thread after workpiece 9 (as reinforcing bar) puts annex anchor ring 91 and anchor sheet 92, is seated on the tool fixing frame 21 of giving roof pressure head 13 front ends, central cylinder 5 promotes the roof pressure head left, push away annex anchor sheet 92, wedging anchor ring 91, with anchor ring 91 left sides against tool fixing frame 21, reach even workpiece 9 (as reinforcing bar) is squeezed give tight.All the other structures are identical with second embodiment.

Claims

1, a kind of multi-functional stretch-draw hydraulic jack, comprise cylinder body, middle cylinder, inner casing, it is characterized in that: the front end at cylinder body is provided with the middle ring body that removably connects, be provided with the end ring spare of separable joint at the front end of middle cylinder, and this end ring spare is in middle ring front, in addition, the inner casing front end has detachable connecting section.

2,, it is characterized in that by the described multi-functional stretch-draw hydraulic jack of claim 1: above-mentioned end ring spare be top pressing device, above-mentioned in ring be helmet, and between this top pressing device and inner casing, be provided with and the detachable section of the connection bonded assembly instrument grip of above-mentioned inner casing front end.

3, by the described multi-functional stretch-draw hydraulic jack of claim 1, it is characterized in that: above-mentioned end ring spare is to be connected to form by cutting knife and jam nut, and above-mentioned again middle ring is a tool fixing frame.

4, by the described multi-functional stretch-draw hydraulic jack of claim 1, it is characterized in that: above-mentioned end ring spare is the roof pressure head, and above-mentioned again middle ring is a tool fixing frame.