Cable seat capable of adjusting bolt connection position

Abstract

The utility model discloses a cable seat capable of adjusting a bolt connection position. The cable seat comprises a fixed base, a compression bolt, an adjustable screw sleeve and a pressing sheet, a bolt connecting screw hole and a screw sleeve positioning blind hole are formed in the fixed base; connecting threads are machined on the inner wall of the adjustable threaded sleeve, and the outer wall of the adjustable threaded sleeve is of a cylinder structure with the diameter of the upper section being small and the diameter of the lower section being large. A bolt through hole and a threaded sleeve through hole are formed in the pressing sheet; the fixed base is welded and fixed on the combustion chamber shell; the lower section of the adjustable screw sleeve is inserted into the screw sleeve positioning blind hole of the fixed base; the pressing sheet is mounted above the fixed base; the pressing bolt penetrates through the bolt passing hole of the pressing piece to be connected into the bolt connecting screw hole of the fixed base in a threaded mode, and therefore the adjustable threaded sleeve is axially limited. The cable seat provided by the utility model effectively solves the problem of hole position alignment when the cable cover and the cable seat structure are assembled during installation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rocket engine assembly technical field, concretely relates to a cable seat of adjustable bolt connection position. BACKGROUND

[0002] The aircraft control system equipment is installed in different cabin sections according to functions. The control system cable network is a combination of multiple cable bundles that are physically connected in advance. As part of the control system cable network, the engine through-cabin cable serves to connect the engine front-end cabin cable bundle and the rear-end cabin cable bundle. Generally, the engine outer installation cable bundle and the cable cover are used to solve the cable bundle installation problem in the solid engine section. The installation method is generally to weld and fix the cable seat in pairs on the combustion chamber shell along the combustion chamber axis direction, and to fix the cable on the rocket engine by bolt connection between the cable cover and the cable seat.

[0003] During engine assembly, the connection between the cable cover and the cable seat may not be aligned due to cable seat welding errors, cable cover deformation, hole position errors, etc., resulting in assembly difficulties. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problem of non-alignment of threaded holes during assembly of the cable cover and the cable seat in the traditional process, and provides a cable seat with adjustable bolt connection position.

[0005] The utility model aims to achieve the following technical solutions:

[0006] The utility model relates to a cable seat with adjustable bolt connection position, which comprises a fixed base, a compression bolt, an adjustable screw sleeve and a pressing sheet.

[0007] Screw connection screw holes and screw sleeve positioning blind holes are formed in the fixed base;

[0008] The distribution position of the screw sleeve connection blind hole on the fixed base matches the distribution position of the bolt through hole on the cable cover;

[0009] A connecting thread is formed on the inner wall of the adjustable screw sleeve, and the outer wall of the adjustable screw sleeve is a cylindrical structure with a small upper diameter and a large lower diameter;

[0010] Screw through holes and screw sleeve through holes corresponding to the distribution positions of the screw connection screw holes and the screw sleeve positioning blind holes on the fixed base are formed in the pressing sheet, the diameter of the screw sleeve through hole is larger than the diameter of the upper segment of the outer wall of the adjustable screw sleeve and smaller than the diameter of the lower segment of the outer wall of the adjustable screw sleeve;

[0011] The fixed base is welded on the combustion chamber shell; the lower section of the adjustable screw sleeve is inserted into the screw sleeve positioning blind hole of the fixed base; the pressing plate is installed above the fixed base, so that the upper section of the adjustable screw sleeve passes through the screw sleeve passing hole of the pressing plate; the pressing bolt is screwed into the bolt connecting screw hole of the fixed base through the bolt passing hole of the pressing plate, so that the pressing plate is fixed with the fixed base, and the adjustable screw sleeve is axially limited.

[0012] The fixed bases are arranged in pairs on both sides of the cable along the engine combustion chamber axis direction.

[0013] The elastic pad and the adjusting pad are installed between the head of the pressing bolt and the pressing plate.

[0014] The bolt connecting screw holes and the screw sleeve positioning blind holes on the fixed base are arranged at intervals.

[0015] Working principle

[0016] When the cable seat and the cable cover are assembled, since the outer wall of the adjustable screw sleeve and the screw sleeve passing hole of the pressing plate and the screw sleeve positioning blind hole of the fixed base all have radial gaps, the position of the adjustable screw sleeve in the horizontal direction is adjustable. The screw passing through the screw passing hole of the cable cover can be aligned with the inner hole of the adjustable screw sleeve and be screwed tightly, so that the cable seat and the cable cover are reliably fixed, and the problem that the screw cannot be smoothly assembled due to machining errors is avoided.

[0017] Beneficial effects

[0018] The cable seat of the utility model, through the adjustable screw sleeve with adjustable horizontal position, is used for adapting the assembly screw hole on the cable cover, avoids the problem that the screw cannot be smoothly assembled due to machining errors, effectively solves the hole alignment problem when the cable cover and the cable seat structure are assembled, improves the engine assembly efficiency, and greatly saves the time cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the cable seat of the utility model;

[0020] Figure 2 It is an assembly schematic view of the cable seat of the utility model;

[0021] In the figure, 1 is a cable seat, 11 is a fixed base, 12 is a pressing plate, 13 is an adjusting pad, 14 is an elastic pad, 15 is an adjustable screw sleeve, 16 is a pressing bolt, 2 is a combustion chamber shell, 3 is a cable, and 4 is a cable cover. DETAILED DESCRIPTION

[0022] The content of the utility model will be further described below in combination with the drawings and examples:

[0023] Embodiment

[0024] The utility model discloses a cable seat 1 of adjustable bolt connection position, including fixed base 11, compression bolt 16, adjustable screw bush 15 and pressing piece 12.

[0025] The fixed base 11 is opened with bolt connection screw hole and screw bush positioning blind hole of interval arrangement on it;

[0026] The distribution position of screw bush connection blind hole on the fixed base 11 is matched with the distribution position of bolt through hole on the cable cover 4;

[0027] The inner wall of adjustable screw bush 15 is processed with connecting thread, and the outer wall of adjustable screw bush 15 is the cylindrical structure of small upper section diameter and large lower section diameter;

[0028] The pressing piece 12 is opened with bolt through hole and screw bush through hole corresponding with the distribution position of bolt connection screw hole and screw bush positioning blind hole on the fixed base 11 respectively, the diameter of screw bush through hole is greater than the diameter of the outer wall upper section of adjustable screw bush 15 and less than the diameter of the outer wall lower section of adjustable screw bush 15;

[0029] The fixed base 11 is welded and fixed on the combustion chamber shell 2, the lower section of adjustable screw bush 15 is inserted in the screw bush positioning blind hole of fixed base 11, the pressing piece 12 is installed above the fixed base 11, so that the upper section of adjustable screw bush 15 passes through the screw bush through hole of pressing piece 12, the compression bolt 16 is screwed in the bolt connection screw hole of fixed base 11 through the bolt through hole of pressing piece 12, so that the pressing piece 12 is fixed with the fixed base 11, and the adjustable screw bush 15 is axially limited.

[0030] The fixed base 11 is arranged on both sides of cable 3 along the engine combustion chamber axis direction in pairs.

[0031] The head of compression bolt 16 and the pressing piece 12 are installed with elastic pad 14 and adjusting pad 13.

[0032] When the cable seat 1 is assembled with the cable cover 4, the outer wall of adjustable screw bush 15 and the screw bush through hole of pressing piece 12 and the screw bush positioning blind hole of fixed base 11 all leave radial clearance, so that the position of adjustable screw bush 15 is adjustable in horizontal direction. The screw passing through the screw through hole of cable cover 4 can be aligned with the inner hole of adjustable screw bush 15 and be screwed tightly, so that the cable seat 1 and the cable cover 4 can be reliably fixed, and the screw cannot be assembled smoothly due to processing error.

Claims

1. A cable holder with adjustable bolt connection position, characterized by: It includes a fixed base, a tightening bolt, an adjustable screw sleeve and a pressing piece; The fixed base is provided with bolt connection screw holes and screw sleeve positioning blind holes; The distribution positions of the threaded sleeve connection blind holes on the fixed base match the distribution positions of the bolt through holes on the cable cover; The inner wall of the adjustable screw sleeve is processed with a connecting thread, and the outer wall of the adjustable screw sleeve is a cylindrical structure with a small diameter at the upper section and a large diameter at the lower section; The pressing plate is provided with a bolt through hole and a screw sleeve through hole corresponding to the distribution positions of the bolt connection screw hole and the screw sleeve positioning blind hole on the fixed base, respectively. The diameter of the screw sleeve through hole is larger than the diameter of the upper section of the outer wall of the adjustable screw sleeve and smaller than the diameter of the lower section of the outer wall of the adjustable screw sleeve; The fixed base is welded and fixed to the combustion chamber casing; the lower section of the adjustable screw sleeve is inserted into the screw sleeve positioning blind hole of the fixed base; the pressing plate is installed above the fixed base, so that the upper section of the adjustable screw sleeve passes through the screw sleeve through hole of the pressing plate; the tightening bolt passes through the bolt through hole of the pressing plate and is threadedly connected to the bolt connection screw hole of the fixed base, so that the pressing plate is fixed to the fixed base and the adjustable screw sleeve is axially limited.

2. A cable holder with adjustable bolt connection position according to claim 1, characterized in that: The fixed bases are arranged in pairs on both sides of the cable along the axis of the engine combustion chamber.

3. The cable holder with adjustable bolt connection position according to claim 1, characterized in that: An elastic pad and an adjustment pad are installed between the head of the clamping bolt and the pressing piece.

4. The cable holder with adjustable bolt connection position according to claim 1, wherein: The bolt connection screw holes and the screw sleeve positioning blind holes on the fixed base are arranged at intervals.

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