Drawing board for engineering cost

Abstract

The utility model discloses a drawing board for engineering cost, which comprises a main body, the main body is provided with a handle, a support plate, a lining plate and a transmission screw, the handle is fixedly arranged in the middle of the right side of the main body through a screw, and the support plate is connected to the top of the main body through a rotating shaft. The lining plates are symmetrically installed and fixed to the two sides of the interior of the body through screws, inclined sliding ways are formed in the lining plates, the transmission screw rod is in interference connection to the middle of the interior of the body through a bearing, and the front end of the transmission screw rod penetrates through and extends to the front end of the body to be fixedly provided with a rotary knob through screws. The angle of the supporting plate can be easily adjusted, and drawing convenience is effectively improved.

Description

Technical Field

[0001] The utility model relates to a drawing board for engineering cost, belonging to the technical field of engineering cost tools. Background Art

[0002] When working on engineering cost estimation, it is necessary to draw graphics on the engineering site, but most of the drawing boards currently used are flat structures, which cannot provide good angle support for the drawings. In order to solve the above problem, a new technical solution is provided. Utility Model Content

[0003] The purpose of the utility model is to provide a drawing board for engineering cost to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a drawing board for engineering cost, including a main body, on which are provided a handle, a support plate, an inner lining plate and a transmission screw, the handle being fixed to the middle of the right side of the main body by screws, the support plate being connected to the top of the main body by a rotating shaft, the inner lining plate being symmetrically fixed to both sides of the inside of the main body by screws, and an inclined slideway being provided on the inner lining plate, the transmission screw being connected to the middle of the inside of the main body by an interference bearing, and the front end of the transmission screw passing through and extending to the front end of the main body where a knob is fixed by screws.

[0005] Preferably, the rear end of the transmission screw is connected to a slider via a thread, and the lower sides of the slider are connected to a swing arm via a rotating shaft, and the swing arm is provided with a shift rod and an L-shaped bracket, the shift rod is fixed to the outer side of the end of the swing arm by screws, and the L-shaped bracket is welded to the middle above the swing arm.

[0006] Preferably, the end of the lever is nested in the inclined slideway.

[0007] Preferably, the outer side of the end of the L-shaped bracket is connected to a pulley via a rotating shaft, and the outer side of the pulley is in contact with the bottom of the support plate.

[0008] Compared with the prior art, the beneficial effects of the utility model are: the front end of the transmission screw of the utility model penetrates and extends to the front end of the main body, and a knob is fixed thereto by means of screws, and the transmission screw can be easily driven to rotate by the knob; the rear end of the transmission screw is connected to a slider by a thread, and the slider can be easily driven to slide back and forth by the transmission screw; the end of the lever is nested in the inclined slide, and the angle of the swing arm on the lever can be easily driven by the inclined slide to adjust the angle; based on the above, the utility model can easily adjust the angle of the support plate, effectively improving the convenience of drawing. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model;

[0010] Figure 2 This is a schematic diagram of the support plate structure of the utility model;

[0011] Figure 3 This is a schematic diagram of the structure of the slider of the utility model;

[0012] In the figure: 1-main body; 2-handle; 3-support plate; 4-lining plate; 5-drive screw; 6-inclined slide; 7-knob; 8-slider; 9-swing arm; 10-lever; 11-L-shaped bracket; 12-pulley. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0014] like Figure 1-3 As shown, a drawing board for engineering cost includes a main body 1, on which a handle 2, a support plate 3, an inner lining plate 4 and a transmission screw 5 are arranged. The handle 2 is fixed to the middle of the right side of the main body 1 by screws, the support plate 3 is connected to the top of the main body 1 by a rotating shaft, the inner lining plate 4 is symmetrically fixed to both sides of the inside of the main body 1 by screws, and an inclined slideway 6 is opened on the inner lining plate 4, the transmission screw 5 is connected to the middle of the inside of the main body 1 by a bearing interference fit, and the front end of the transmission screw 5 passes through and extends to the front end of the main body 1 and is fixed with a knob 7 by screws, the rear end of the transmission screw 5 is connected with a slider 8 by thread, and swing arms 9 are connected to the lower sides of the slider 8 by rotating shafts, a lever 10 and an L-shaped bracket 11 are arranged on the swing arm 9, the lever 10 is fixed to the outer side of the end of the swing arm 9 by screws, the L-shaped bracket 11 is welded to the middle above the swing arm 9, the end of the lever 10 is nested in the inclined slideway 6, the outer side of the end of the L-shaped bracket 11 is connected with a pulley 12 by a rotating shaft, and the outer side of the pulley 12 fits with the bottom of the support plate 3.

[0015] Specific usage: when adjusting the angle of the support plate 3, turning the knob 7 drives the transmission screw 5 to rotate, the rotation of the transmission screw 5 drives the slider 8 to slide forward in a straight line, the sliding of the slider 8 drives the swing arm 9 to slide forward in a straight line, the sliding of the swing arm 9 drives the lever 10 to slide forward along the inclined slide 6, and the sliding of the lever 10 drives the front end of the swing arm 9 to tilt upward, the tilting of the front end of the swing arm 9 drives the L-shaped bracket 11 to tilt upward, and the tilting of the L-shaped bracket 11 drives the support plate 3 to flip up through the pulley 12 to adjust the angle.

[0016] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. A drawing board for engineering cost, comprising a main body (1), characterized in that: The main body (1) is provided with a handle (2), a support plate (3), an inner lining plate (4) and a transmission screw (5); the handle (2) is fixed to the middle of the right side of the main body (1) by means of screws; the support plate (3) is connected to the top of the main body (1) by means of a rotating shaft; the inner lining plate (4) is symmetrically fixed to both sides of the inside of the main body (1) by means of screws; an inclined slideway (6) is provided on the inner lining plate (4); the transmission screw (5) is connected to the middle of the inside of the main body (1) by means of a bearing interference fit; and the front end of the transmission screw (5) penetrates and extends to the front end of the main body (1) and is fixed with a knob (7) by means of screws.

2. The engineering cost drawing board according to claim 1, characterized in that: The rear end of the transmission screw rod (5) is connected to a slider (8) via a threaded connection, and the lower sides of the slider (8) are connected to a swing arm (9) via a rotating shaft, and the swing arm (9) is provided with a shifting rod (10) and an L-shaped bracket (11), the shifting rod (10) is fixed to the outer side of the end of the swing arm (9) via screws, and the L-shaped bracket (11) is welded to the middle of the upper part of the swing arm (9).

3. The engineering cost drawing board according to claim 2, characterized in that: The end of the shifting rod (10) is nested in the inclined slideway (6).

4. The engineering cost drawing board according to claim 2, characterized in that: The outer side of the end of the L-shaped bracket (11) is connected to a pulley (12) via a rotating shaft, and the outer side of the pulley (12) is in contact with the bottom of the support plate (3).

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