Frame structure for double-frame brick press

Abstract

The invention discloses a frame structure for a double-frame brick pressing machine. It includes: a front frame and a rear frame, the front frame and the rear frame are arranged parallel to the front and back; a connecting component is used to connect the front frame and the rear frame into a whole; the inner side of the front frame is provided with at least two lordosis platform, the inner side of the rear frame is provided with the same number of rear bosses as the front bosses and correspondingly fitted with the rear bosses, and a positioning components. Preferably, the positioning assembly includes a positioning key hole and a positioning key provided in the positioning key hole respectively provided on the fitting surfaces of the front boss and the rear boss. The invention can effectively solve the problem of weak stiffness in the front and rear directions of the double-frame frame, further improve the anti-eccentric load capacity of the frame, and ensure the forming dimensional accuracy and quality of the adobe during pressing.

Description

technical field [0001] The invention relates to a frame structure of a hydraulic brick press, in particular to a frame structure for a double-frame brick press. Background technique [0002] Such as figure 1 with figure 2 As shown, the main stress-bearing frame structure of the existing double-frame brick press mainly consists of a front frame 11 and a rear frame 12 arranged in parallel and connected as a whole through connecting components. The front frame 11 and the rear frame 12 in the figure both adopt an integral frame structure, that is, a closed inner frame 13 is cut out of a whole thick steel plate, and the main oil cylinder assembly 21 and workbench necessary for the brick press are arranged in the closed inner frame 13 22, etc.; and the connecting components between the two frames are mainly sleeves 31 and long screw-nut combinations 32 arranged at the four corners of the inner sides of the two frames: the sleeve 31 is arranged between the two frames, and the tw...

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Problems solved by technology

[0003] However, the brick press frame structure adopting the above-mentioned connection structure will have the following disadvantages after long-term use: 1. The rigidity of the frame structure has obvious differences in the left-right direction and the front-rear direction: because the frame is cut by a whole steel plate Therefore, the stiffness in the left and right directions is sufficient, while the stiffness in the front and rear directions is relatively weak due to the four sets of tie rod sleeves connecting the two frames, so the stiffness in the front and rear directions of the frame is poor. When the powder in the mold cavity is uneven, the frame will be displaced relatively due to the uneven force on the front and rear frames after loading, resulting in the front and rear shaking of the frame when the brick press is working; The "nodding" phenomenon is more obvious when the load is severe; in addition, because the powder fed into the cavity by the feeding system of the brick press machine cannot be idealized, there will be more or less uneven phenomena, so this After long-term unbalanced loading of the frame, stress concentration will occur in the positioning hole of the sleeve and the threaded part of the tie rod, resulting in fatigue damage; The connecting bolts of the oil cylinder and the workbench are easy to break, which greatly reduces the reliability of the main engine structure

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