CN2307123Y - Chain clasp for concrete pump - Google Patents

Abstract

The utility model relates to a connecting device for a concrete piston and a piston rod of a master cylinder for a concrete pump. The utility model is characterized in that a chain clamp which is in a three-opening form or a multiple-opening form is connected via bolts (1), hinge pins (2) and square nuts (3); the clamp (4) in a three-opening form is tightened towards the center. Conical surfaces on both sides of an inner groove of the clamp are used for clamping and firmly connecting two flanges with conical surfaces at three points or multiple points. During disassembly and assembly, only one of the bolts (1) needs to be unscrewed or screwed. Thus, the utility model has the advantages of time saving, convenience and high speed in disassembly and assembly.

Description

Concrete pump chain type clip

The utility model relates to concrete pump, particularly the connection set of concrete piston and main oil cylinder piston bar.

Existing concrete pump, the Placement of its concrete piston and main oil cylinder piston bar generally has the bolt flange formula and the conical surface to split two kinds of clamp band types.Though the former is connected firmly, its dismounting is loaded down with trivial details, and it is longer to take time; The latter is the (see figure 5) that tightens two conical surface flanges by its inside groove both sides conical surface, though its dismounting is very fast, but the point of its chucking is along on the diameter of bolt axial direction, and have only 2 points, 2 determine a line rather than a face, so its connection is not too firm, moreover utilize the outer card plate resiliently deformable to tighten, its clamping force also is limited, is difficult to satisfy the actual conditions needs.

The purpose of this utility model provides a kind of three-open type (or many open types), the inside groove both sides are the chain type clip of the conical surface, can tighten two conical surface flanges by 3 points (or multiple spot), has replacing time weak point, characteristics easy and simple to handle.

Main points of the present utility model are: two with front band, three-open type clip for example, and with connecting plate, sell, be hinged to one, shape such as chain at chain type opening clip two ends, have square groove and arc groove respectively, setting-in square nut in square groove.When two bolts pass the hole of hinge pin respectively, when screwing in square nut, the periphery of two hinge pins is then pressed to the arc groove on the clip; Bolt is screwed, and then the periphery of hinge pin is close to the arc groove on the clip, the three-open type clip is tightened up to the center, and by the conical surface of clip 3 chuckings of two conical surface flanges with concrete piston and main oil cylinder piston bar, constitute firm connection.Dismounting is during clip, only needs arbitrary bolt unscrewed to the periphery of hinge pin to skid off arc groove on the clip, bolt, hinge pin and the taking-up of square nut one can one can be packed into when installing later on equally.Owing to only need screw or unscrew a bolt, and don't will it all screw out or screw in, therefore can reach and save mounting or dismounting time and purpose easy and simple to handle.

Accompanying drawing 1 is a kind of embodiment schematic representation of the present utility model.

Accompanying drawing 2 is the side view of the utility model that is accompanying drawing 1.

Accompanying drawing 3 is an accompanying drawing 1A-A rotation profile.

Accompanying drawing 4 is an accompanying drawing 1B-B sectional drawing.

Accompanying drawing 5 is a conical surface opposite opened clip connected schematic representation.

Accompanying drawing 6 is the side view of accompanying drawing 5.

Accompanying drawing 7 is the A-A sectional drawing of accompanying drawing 5.

Among the figure: [1] is bolt, and [2] are hinge pin, and [3] are square nut, and [4] are the three-open type clip, and [5] are connecting plate, and [6] are pin, and [7] are outer card plate, and [8] are conical surface opposite opened clip.

Now sketch enforcement of the present utility model and working procedure thereof in conjunction with the accompanying drawings.

The utility model adopts three-open type clip [4].With pin [6] three-open type clip [4] is hinged to one by connecting plate [5], shape such as chain.Square nut [3] is housed in the square groove of opening clip.Bolt [1] passes hole, the screw-in square nut [3] of hinge pin [2], and the periphery of hinge pin [2] is then pressed to the arc groove on the clip.Bolt [1] is screwed, three-open type clip [4] can be tightened up to the center, by its conical surface 3 chuckings of two conical surface flanges with concrete piston and main piston rod, 3 one sides are connected firmly.Dismounting is during clip, only needs arbitrary bolt [1] screwed out to the periphery of hinge pin [2] to skid off arc groove on the clip, bolt [1], hinge pin [2] can be taken out with square nut [3] one, packs into but after this one also is installed.

The utility model compared with the prior art owing to only need screw or unscrew a bolt [1], And do not need again bolt [1] is all screwed out, thereby have the mounting or dismounting time and easy and simple to handle of saving Advantage, chucking is strong in addition, is connected firmly, so suitable the employing.

Claims (1)

1. a concrete pump chain type clip comprises clip, bolt, and feature of the present utility model is:

I. two with front band, three-open type clip [4] for example, and its inside groove both sides are the conical surface, can be hinged to an open kinematic chain by connecting plate [5], pin [6];

II. have square groove and arc groove in open type serobila clip opening both sides;

III. three-open type clip [4] connects with bolt [1], hinge pin [2], square nut [3].

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